Abstract
Qal’eh Dokhtar, as one of the important historical sites on the eastern outskirts of Kerman, has been described in historical texts with different names such as Qal’eh Kooh and Qal’eh Kohan, as a place of political and social events. One of the important features of this castle is its special location in Kerman plain, as well as the extent of its architectural structures and type of materials. The purpose of this study is to analyze the nature, function, and chronology of Qal’eh Dokhtar. This study was done based on the results of an archaeological survey, sounding, and archaeological excavation in 2019 in this site. This study can explain the role and position of Qal’eh Dokhtar in the social and political developments of Kerman during the Islamic era. Data collection was done by documentary and field methods and the research method is descriptive-analytical. The questions are: When were the foundations and renovations of Qal’eh Dokhtar made and what were the functions of this complex? For this purpose, the data of previous archaeological research and recent field activities of the authors were studied and reviewed, and while studying the historical geography of the region, a correct idea of the nature, formation, and function of this building in relation to cultural developments, Political and social of this area in the different period were presented. The study of cultural materials along with the study of historical sources shows that this site is probably almost continuously inhabited from the pre-Islamic period and certainly from the first centuries of Islam to the tenth century AH. The results show that this structure has played a decisive role in the political and social developments in the region. It seems that Qal’eh Dokhtar was probably constructed and reconstructed from the pre-Islamic period and certainly from the first centuries of Islam to the Safavid era for establishing a military and defense base, as a place to hold political prisoners, a treasury, a safe haven for sit-ins and the rulers and their families.
Keywords: Qal’eh Dokhtar in Kerman, Qal’eh Kooh, Qal’eh Kohan, Historical Castles, Islamic Architecture.

Introduction
Based on historical evidence, Kerman city was founded due to an economic-military necessity. The necessity that required the important branch of the Khorasan arterial road, that is, the spice route of India and the coasts of the Oman Sea, passes through the deserts of Kerman and Baluchistan and connects to the Khorasan arterial road. The Kerman region was located in the center of the intersection of the mentioned roads (Zarei and Heydari, 2013: 202). Because of this special situation, Kerman was also subject to internal and external attacks since historical times (Bastani Parizi, 2016: 40). Therefore, large castles were built for military and defensive purposes to prevent damage and protect lives and property from enemy attacks. Qal’eh Dokhtar is one of the important castles that was founded in response to such needs. In its ups and downs history, this castle has been one of the most famous and eventful castles, especially during the Islamic era, compared to other historical castles in the southeast. Based on the historical sources, political events in the history of Kerman in different periods are connected with this castle (see: Afzal al-Din Kermani, 2016: 124; Vaziri, 2016: 102; Monshi Kermani, 2018: 62; Sykes, 2016: 80).
Despite this, none of the above studies gives a detailed understanding of the nature, function, and chronology of this monument in connection with the social and political developments of Kerman. Historical sources also show a number of contradictions about the date of construction and function of Qal’eh Dokhtar. Most of these contradictions have been caused by the lack of detailed and comprehensive investigation or the ignorance of historians. Considering that the previous researches related to Qal’eh Dokhtar were only descriptive, the importance of the research is that it studied the nature and use of this castle with an analytical approach.
Materials and Method: In this research, by studying historical texts and architectural structures and cultural data (including the remains of pottery from the archaeological excavation and survey in Qal’eh Dokhtar), an attempt was made to create a clear understanding of the history of construction, the process, and stages of renovations, its functions based on the developments. Data collection in this research has been done by field and documentary methods. Based on this, the study and analysis of the findings of the authors’ excavation and survey in Qal’eh Dokhtar has been done to explain the construction chronology, the process and stages of renovations, and the functions of the castle. Also, the historical texts related to this work have been analyzed in the “content analysis” method, and by matching the data from these documents with the archaeological findings, new analyzes have been tried to be presented about this work.

Data
Qal’eh Dokhtar is built on a high rock overlooking the landscape of Kerman plain. This high rock is stretched lengthwise from east to west and its length is more than 720 meters. The architecture of Qal’eh Dokhtar follows the topography of this rock. Some of the architectural spaces of Qal’eh Dokhtar were formed on large stone slabs, and in some others, space was provided for construction by carving the mountain rocks, and buildings were formed with mud-brick, crushed stone, Sarooj, plaster, and lime. In the eastern part of the complex, architectural evidence of two and three stories has been left. In the northernmost part of the middle section, the architectural structures of this section were probably the ruling buildings. In the northwest of the middle part of Qal’eh Dokhtar, there is a wide and half-ruined gate, a small pedestrian gate, and a high and solid tower. In the south of the middle part of Qal’eh Dokhtar, there are remains of a brick water basin.

Discussion
Analyzing the content of historical sources provides information about the functions of Qal’eh Dokhtar during the Islamic era. For example, the first function of Qal’eh Dokhtar as a “place for opponents of the government” can be mentioned (Monshi Kermani, 1328: 23; Hafez Abro, 1375: 53-52). The second function of Qal’eh Dokhtar was based on the analysis of the content of historical texts, “a place to store government treasures” (Katabi, 1985: 100; Hafez Abro, 1996: 157). The third function of Qal’eh Dokhtar can also be considered as “the residence of rulers and their families” in some periods (Afzal al-Din Kermani, 1977: 124). The last function of Qal’eh Dokhtar can be seen as a shelter for besiegers (Khabisi, 1994: 187). In addition to these, we can also mention the role of Qal’eh Dokhtar in keeping political prisoners, which is hidden in historical sources (Monshi Kermani, 1949: 15; Hafez Abro, 1996: 20). Based on this, Qal’eh Dokhtar has had different functions in different eras and as a part of the spatial organization of Kerman city, it has played a special role in the political and social developments of this city in the Islamic era.

Conclusion
Qal’eh Dokhtar in the east of Kerman city was one of the important castles that was founded in the pre-Islamic and early Islamic period due to the need to deal with the threat of invading tribes on the south and southeast highway of the country, and it became the throne of the rulers of Kerman in different periods. For two reasons, Qal’eh Dokhtar played a role as a military and defense structure along with other castles in Kerman in providing security to the east of Kerman and the highways of the region. The First reason is “its location on top of the natural elevation and dominates the Kerman plain”, and the Second is “the important position of the city of Kerman from a military point of view during the Sassanid era”. However, the analysis of the content of Islamic written sources and the study of archaeological evidence, including pottery and architectural structures, show a basic reconstruction phase in the 4th century AH, a deliberate destruction phase in the late 6th century AH, two phases of reconstruction in the early and at the end of the 7th century A.H. and a stage of reconstruction took place in the second half of the 8th century A.H. in Qal’eh Dokhtar. Along with these developments and renovations, other functions were added to the security and defense functions of Qal’eh Dokhtar. As it has functioned as a place to keep political prisoners, in other times as a place to keep government treasures, sometimes as a safe haven for the opposition and in other periods as a residence of rulers and their families.

Acknowledgments
The authors are grateful to Dr. Asadullah Jodaki Azizi for his advice.

Abstract
Inscriptions in the decorations of building of the Islamic period have been noticed by artists since the early Islamic centuries. Overtime, inscriptions are damaged by various factors and need to be restored. Considering that every year in the country, a large amount of restoration operations are carried out on damaged historical monuments, including inscriptions. It was seen through the investigation that in most cases the restorations are tasteful and sometimes incorrect. In order to find the most important causes of incorrect restoration in written inscriptions, the qualitative method was used, and the grounded theory method was used to analyze the data. This research is practical in terms of purpose. The data was collected through field observations and interviews with 12 people related to the restoration of inscriptions and by purposeful sampling, and the data continued until theoretical saturation was reached. The results of the research showed that in addition to the lack of criteria that agree with the theoretical foundations of restorations, due to the prominence of the calligraphy and category, factors such as self-centered empiricism, the variety of viewpoints, knowledge and awareness of the traditional master craftsman and the rules of restoration and the lack of the artistic perspective of the traditional master craftsman. For various reasons, inscriptions have led to incorrect restorations, and of course, the lack of training courses by the institutions in charge of restoration has also been involved. Also, the variety of approaches in the restoration of inscriptions and lack of attention to the rules governing the art of inscriptions are considered as the most important consequences of the restoration of inscriptions. 
Keywords: Written Inscription, Incorrect Restoration, Foundation Data Theory, Architecture of The Islamic Period of Iran.

Introduction
With the beginning of the Islamic era and the restoration of human and animal depictions, the use of inscriptions with religious, literary and historical themes reached its peak with various calligraphy methods and styles. This enduring art that is inscription is still performed by artists to this day. Inscription like other historical works, suffer from various physical, chemical, biological and human damages, and from various perspectives of value, aesthetics, originality, legibility, unity and integrity they suffer serious damage. Therefore, despite the important characteristics mentioned about this category of written works, the need to pay attention to this category of work is revealed in restoration operations. The importance of paying attention to the issue among other valuable historical and cultural work is important in the sense that there is a lake of criteria in accordance with the theoretical foundations of restoration, for the restoration of areas lacking in this category of valuable written works. Although in most cases, the restoration of this category of works is often done under the supervision of restoration experts, the approach and methods of doing the work in different examples are not subject to scientific principles and are mostly tasteful and sometimes incorrect and without regard to the ruling principles, they are restored on the art of calligraphy and inscriptions and it has caused distortion and sometimes loss of the of the inscription, its values and message.
According to examples of the restoration of written inscriptions ,when the restoration of a written inscription is done incorrectly , in fact, readability , integrity and beauty ( Beauty is in  harmony , balance, proportion , even beauty in observing the rules and recognizing the values and materials have been used (Qutbi, 1352, 31) the inscription is distorted and the audience , when viewing an inscription that has been incorrectly restored , gets the visual pleasure of seeing the harmony and connection between the words in an inscription will bs deprived. In fact, carrying out the restoration operation should reduce the inconsistency caused by the lack of space and help to read the work better.

Method Research
The upcoming research is applied research in terms of its purpose, because the researcher seek to obtain information that can be used in practical situations or solve a problems by means of them and obtain a solution to a problem. This research is a qualitative research in terms of method and in terms of data collection, it is based on field studies, interviews, observation and collection of documents and texts within the framework of the grounded theory method. The interview was conducted with the purposeful sampling method and until the theoretical saturation was reached 12 people were interviewed among the restoration experts, inscription artists and master traditional craftsmen. Grounded theory and systematic coding were used to analyze the interviews.

Research Background
Although restoration of inscriptions has always been one of the concerns of restorers, it seems that a comprehensive, coherent and effective study has not been done in this field. For example, the following can be mentioned: the Scientifics specialized and professional restoration community has not restoration of inscriptions of mosaic tiles in Iran (Soleimani et al., 2014), researchers have criticized the methods of restoration of mosaic tiles but there is no mention of the causes of its correct restoration. Also, sources such as Quchani (1365: 51), Bler (1394: 30) and Qader (1391: 86 &103) mention the non-original restorations of the reason for that has not been discussed. By checking the databases related to non-Persian theses, unfortunately, no example similar to the subject of this research was found. In line with above investigations, Persian sources were also carefully checked. 

Conclusion
Inscriptions are one of the most important and valuable works of the Islamic period and they are a living document from different perspectives such as historical, artistic etc. Restoration of inscription has always been one of the concerns of restorers. But the results of the interview and data showed that the main factor in the variety of approaches in the restoration of inscriptions and the lack of attention to the rules and regulations of inscriptions in the process of restoration operations is self-centered empiricism. Among the traditional craftsmen and even the scribes who are somehow related to the restoration process of the inscriptions, ignorance of the restoration rules or even ignorance of the different aspects of the inscriptions can be seen. Also, looking at the conducted interviews, it can be pointed out that the role of the custodian institutions in relation to the restoration of inscription is weak, unfortunately, in this field , training courses are not held for the inscription writers and traditional masters, and it seems that by holding training courses and obliging inscription writers and traditional masters to participate in these classes, recognizing the values of the works and observing various aspects in the matter of restoration are institutionalized. Even though in most cases, restoration operations are carried out under the supervision of restoration experts unfortunately, due to the lake of standards in the restoration of inscriptions shortage areas, diversity of approaches in the restoration of inscriptions and even incorrect restorations can be seen, also, it seems that one of the challenges in the field of protection and restoration of written inscriptions is the theoretical issues related.
To the restoration of this category of valuable written works: because the theoretical reliance of the theoretical discussions of conservation and restoration is often focused on Western theorists and their studies and theories, which have been explained from the viewpoint of a group of researchers and following the statements of summits, charters and such. Especially, when these theoretical rules are put forward in a general way and without considering the spatial, temporal and cultural background, they usually face constructions. In order to correct and solve these problems, attention should be paid to the local knowledge, which can be a way forward in view of the existing knowledge in the field of Iranian architecture and the rules governing the art of inscriptions, and in order to add new concepts and foundations to the field of conservation knowledge and restoration can be considered. 

Abstract
The troglodytic architecture complex in Arzanfoud (Arzanpoul) is located 30 km southeast of Hamadan, 2 km south of Arzanfoud village. The complex accidentally recovered following mining activities at 2010. There have been four seasons of archaeological activities including excavations, documentation, earthworks, and identifications. According archaeological activities, more than 70 troglodytic spaces revealed that dated to historic and Islamic periods relying on pottery findings. There are questions on variations, forms, techniques, and decorations including 1) what dates are pottery types of troglodytic spaces? 2) What are common techniques and decorations of potteries? Considering descriptive-analytic method, findings, collected of fieldworks and bibliographic studies, qualitatively analyzed. Conclusions indicate that pottery findings date to historic period, Parthian and Sassanid, and middle and late Islamic periods (Seljuq, Ilkhanid, Timurid, and Safavid). Among the most important historic potteries are Clinky wares, grooved rims, and hump-like rims; while the most significant Islamic potteries are stamped wares, painting underglaze, lusterwares, Sgraphiato, enamled wares, and blue and white. Regional soils studies, and nearby Mica and Quartz mines indicate that potteries with Mica and Quartz in temper are, probably, local productions, while the others are probably exotic.
Keywords: Hamadan, Arzanfoud (Arzanpoul), Handmade Troglodytic Architecture, pottery, Historical, Islamic.

Introduction
One of the goals of archaeological research is the study of cultural changes, and in this regard, examining and analyzing the material culture of the past is of particular importance. In the term of archaeologists, these remains are called data. In order to achieve the general goal of archeology - the reconstruction of the past life of mankind, these data must be examined in a specific and logical framework and turned into evidence. In general, pottery is one of the most abundant archaeological data, which is of particular importance in any archaeological analysis. Due to its abundant and continuous production, pottery has always adopted various transformations and innovations in its shape and role, some of which have arisen due to the development and internal growth of cultures over time. Another part of these changes emerges due to cultural and economic links with far and near societies. In fact, pottery is considered the best cultural indicator in order to know societies and it is very important for communication between different units of a regional culture on the one hand and trans-regional cultures on the other hand. Now, according to the above-mentioned materials and referring to the importance of pottery in the process of examining and studying the pottery of different periods in various areas, it is necessary to carefully analyze the typology of pottery and the decorations used in the pottery according to the methods of pottery making and analysis to provide a logical answer to the following questions: 1) what dates are pottery types of troglodytic spaces? 2) What are common techniques and decorations of potteries? Considering descriptive-analytic method, findings, collected of fieldworks and bibliographic studies, qualitatively analyzed.

Discussion
The unique types of this architecture can be set handmade troglodytic underground architectural complex at Arzanfoud in Hamadan noted that was discovered by accident in 2010 as a result of mineral exploration activity. This area is located 30 km South East of Hamadan city (provincial capital) and is situated 2 kilometers south of a village with the same name. The area of the Alvand Mountains, located in the heart of pristine nature and intact. As you explore the collection of handmade troglodytic of Iran was faced with numerous questions, The most important questions were raised about whether this complex of Arzanfoud when created, What time period was used in this series as well as a vast range of different spaces for what purpose and the user was created. According to the first season of archaeological research questions in this category sponsored Ali Khaksar was started in 2010 and the second and third chapters of this research will follow in subsequent years 2011 and 2015. This research programs (identification, documentation, clearing and archeological excavations) in this area were conducted. These results identify more than 70 hand-made underground spaces including rooms and halls with variable depth from 3 to 7 meters. Several hypotheses have been raised in line with spaces this set of user talk ritual, habitat, refuge and exile has been the case so far as the draw of any archaeological activity has been approved. Also according to studies cannot accurately determine the time to create this collection, but this complex be used to set time periods during the middle and late Parthian and Islamic centuries been used on. The underground spaces are connected to the surface via stairs-like entries in the schistose bedrock. This set covers all the spaces are arched, it works well in most areas, this collection strikes a sharp object (possibly pick) clearly observed. It also sets the foundation lamp oil lighting spaces that were in the wall spaces. In some places the walls of adjacent platforms (made from stone-ground or wall stile), water channels and sources are visible. It should be noted that the surface area of architecture can be seen as evidence that more archaeological research is needed to provide comments.
The pottery found in the Arzanfoud area can be divided into two groups of historical periods, including the Parthian and Sasanian periods, as well as the Islamic period. Parthian period pottery includes types: Clinky, Pottery jar with one vertical handle and jar with two vertical handle; Sassanid period pottery includes types; the plate with a simple flat edge turned outwards, the bowl with a Pigeon head rim, Bowls with convex and prominent edges and Pottery with grooved edges (three edges). 
potteries of the Islamic period can be divided into two main types, including unglazed (Decorations removed and added on pottery, bottom image, silver colored mica particles on pottery, Pottery with carvings, . potteries with a pattern of birds in a circle, Stamped pottery from Arzanfoud and comparable samples and Pottery with inlaid decoration) and glazed (Pottery with single-color of lapis lazuli glaze, Potteries with a prominent pattern under monocolor glaze, Sgraffiato pottery, Zarinfam pottery, Pottery with animal motifs, underglaze painting type, Pottery with underglaze painting (Ghalam Meshki), Pottery with underglaze painting and Pottery with blue and white glaze).

Conclusion
The pottery found in the Arzanfoud area can be divided into two groups of historical periods, including the Parthian and Sasanian periods, as well as the Islamic period. Parthian period pottery includes types: Clinky, Pottery jar with one vertical handle and jar with two vertical handle; Sassanid period pottery includes types; the plate with a simple flat edge turned outwards, the bowl with a Pigeon head rim, Bowls with convex and prominent edges and Pottery with grooved edges (three edges). 
The pottery of the Islamic period of this site belongs to the middle and late Islamic centuries (Seljuq, Ilkhanid, Timurid and Safavid), among which the pottery of the Ilkhanid period in Arzanfoud is of considerable importance. According to the archaeological research conducted in Arzanfoud, no evidence of a pottery kiln has been found so far, but surface evidence and findings related to pottery production have been observed in the area. On the other hand, silver and gold mica and quartz particles can be seen in much earthenware, which, due to the location of mica and quartz mines in the area and the vicinity of the area, can probably be the production of some earthenware in the area. One of the interesting points of interest in the historical and Islamic pottery of Arzanfod is the great similarity with the pottery types of other historical and Islamic sites of Hamadan province, including: Hegmataneh Tape, Zainoabad Tape of Bahar, Laodiceh of Nahavand and especially the architecture of the Samen underground handmade troglodytic in Malayer, which has the most similarity with Arzanfod’s pottery findings, which shows extensive cultural connections.

Abstract
Since during this era, Yazd involve less social vicissitudes and because of the training performance in the middle ages of Islam, the tradition of school building that started from the Seljuk dynasty in a quiet environment. Being away from security concerns and creating relative peace during the middle ages and the high acceptability of building a school has provided the emergence of its construction in the city of Yazd. Therefore, considering the numerous references to the schools of this era in Yazd historical texts and the absence of research on the architecture of the historical schools of this city, the article describes the building features of these ones. Answering this question is the purpose of this article: what are the features of school mentioned in the historical texts and what were components of spatialization and arrays of these schools? The research method of this article is based on historical documents and library studies. This is a historical-analytical research and its main reference is historical sources such as books of Ta’rikh-e Yazd (History of Yazd), Ta’rihk-e Jadid Yazd (New History of Yazd) and Ja’me’ Mofidi. Historical schools are explored in this article from the aspects of architecture, decoration, function and constructers. The results of this research show that schools in Yazd have local and indigenous features that were prevalent in this area, before Ilkhanate dynasty, and the influence of local architectural and decoration methods on the school building is undeniable according to historical sources. Schools have a lot in common with the architecture of mosques, houses and Khaneqahs (monasteries) considering that schools are usually used as a graveyard, these buildings can be classified as burial schools, and finally, various classes of people have played a major role in building these historical schools as founders.
Keywords: School Architecture, Muzaffarids, Timurid Era, Yazd.

Introduction
In the 77-year rule of Muzaffarids dynasty (718-785 A.H.), in addition to the proceedings taken in the field of city development and increasing the area of battlement, basic measures were done in the field of the construction of religious schools and Khaneqahs (monasteries), so that it can be said that this region reached the glory of cultural prosperity within itself (Shamseh, 2006, P.31). Muzaffarids rule, whose beginning coincided with the end of the Ilkhanate era, should be considered one of the most powerful, best and most prosperous governments in the middle history of Iran, because at that time nowhere in Iran had cultural, social and economic development as much as their territory, and the importance of cultural affairs and attention to science and schools was so much that most possession of the desert region, means water aqueducts and gardens were dedicated to school, and this was apart from the devoted Bazaars and Caravanserais. (Mohammadzadeh & Razavi, 2011, P.21). It has been mentioned in various sources that nearly one hundred schools, two hundred Gonbadkhaneh (domes) and Khaneqahs (monasteries) as well as twelve mosques were built in the 8th century A.H. in Yazd city (Masahebi Naini, 1997, P.302), from the abundance of schools that were built in Yazd, Kerman, Shiraz and other cities during this period, it is possible to understand the level of people’s attention and dedication to the study of religious sciences. (Setoodeh, 1967,P.274). Muzaffarids kings, as well as the great personalities of this era, paid special attention to religious buildings such as mosques, schools and Dar-al Siadeh {a porch that is a gathering place for Seyeds and followers of Imam Ali (peace be upon him)}. In fact, the movement that started during the era of Khajeh Rashid- al Din with the construction of building such as “Gonbad Soltaniyeh” and “Rabَ –e Rashidi” ,other schools and religious places and the tradition of endowment became common in them; then in this era, it grew and expanded significantly, so that whenever there is talk of building a mosque, an order was given to build a school next to it, and endowments were also awarded to (Rais- al Sadat, et al., 2011,P.96). The cultural and artistic actions of Muzaffarids rulers caused the growth and development of Islamic culture and civilization, which provided the basis for its connection with later periods, so that the Timurid and Safavid eras, which are considered the glory the growth and development of Islam can be attributed to Muzaffarids proceedings. (Sarabadani, 2010,P.102). 
Questions of Research: 1- What architecture and arrays do the Yazd schools have, referring to historical texts? 2- What developments and functions do schools have?
Method of Research: The current research has explained the architecture of the historical schools of Yazd from the Ilkhanid to the Timiurid era with an analytical historical approach. In this research, the necessary historical information has been collected, especially from local historical texts such as Ta’rikh-e Yazd (History of Yazd), Ta’rikh Jadid Yazd (New History of Yazd) and Ja’me’ Mofidi, because these texts refer to different schools that were used in that era, but today there are no traces of some of those schools. Discussions such as examining architectural spaces, decorations, performance, development and school constructer are the subjects of this research.

Conclusion
Construction of Muzaffarids and Timurid Schools in Yazd continues the school-building tradition that began in the Kakuyids dynasty. The speed of school-building in Yazd during the Muzaffarid era is very intense, but it moderates during the Timurid dynasty. The concern of school-building in this era includes different strata of society from the aristocratic and royal class to religious scholars and all of them involved in this noble tradition. These schools were mostly built for the burial place of their founder after their death, and in order to legitimize it, the tomb was dome-shaped. For this reason, the Gonbadkhaneh (dome) is an integral part of Yazd schools, and in some ones, they are satisfied with the construction of this morsel. Parts such as elongated Soffeh (terrace), the pair of minarets on the façade, Tanabi (a large room in the middle of the building, without a window or door, surrounded by other spaces), and dome usually with an array, the central courtyard, the Baghtche-e Moshajar (a garden planted with different trees) at the end of the building are considered parts of the school spaces of this era. Utilizing the native structure and decoration methods in “Gonbadkhaneh and Tanabi”, and local architectural mechanisms all give these schools a regional display. The schools of this era with local and indigenous basis have adopted some of their architectural and array features from the era of “Kakuyids and Atabakan”. According to the remaining schools and with the help of historical texts, a general model for schools can be presented (Scheme 1). Schools like mosques and houses of this era, have a similar pattern, although there are common spaces between these functions. The existence of the elongated and lofty porch, which is usually located on the south facade, a small and compact yard,”Gonbadkhaneh or Tanabi” next to or behind the south porch, three-part divisions similar to mosques in the view facing the yard, the presence of a rear garden behind the porch or Gonbadkhaneh like the houses or Khaneqahs, creating a linear structure in spatial organization and many other cases, all confirm this paradigmatic similarity. The tradition and pattern of building these schools were forgotten after the abundance of school building in the Timurid era. The studies and researches of this article can be extended to the Safavid to Qajar era as well, so that a detailed understanding of the architecture and school building method in Yazd throughout history can be obtained through it.

Abstract
Providing water for the inhabitants of the plateau of Iran, which is located in the arid and semi-arid region of the earth, has always been one of the most important challenges for the its people since the beginning of the formation of the first dynasties and establishing the first irrigation systems. Low rainfall climate has caused the Iranian people to innovate different techniques to provide water for agriculture activities permanently.  Iranians are considered as the main creators of Kariz (subground aqueduct) as one of the most practical methods of exploiting underground water resources. Exploitation of running water resources by construction of dams on rivers and springs and the creation of canals is another method rooted in the history of the civilizations of the west Asia for supplying more sustainable water for the agricultural and industrial functions. In the specific and under investigation area of the Pulvar River, where the Achaemenid capital of Pasargadae is located, there are some of the ancient water structures including dams, artificial waterways, canals, extensive water reservoirs and springs. Of theses the dams are mostly built on the tributaries of the Pulvar River, and the water supplying canals are located below them.  Such complex structures have been built in the plains and districts surrounding Pasargadae such as Didegan, Murghab, Sarpiran, Kamin and Arsanjan. The present investigation briefly introduces these water structures and the techniques they were made in the Achaemenid period in the cultural landscape of Pasargadae. The results of this research are based on the studying historical documents and field studies of the past decades by historians and archaeologists, as well as field surveys by the author during the recent years in an area of nearly 16,000 square kilometers. The results of this research are amazing and very impressive. These extensive water systems, with the tact and intelligence of Achaemenid managers and engineers, have supplied water to all the plains and mountain valleys of the Pasargadae region. Villages and public settlements, gardens, agricultural lands, government buildings and centers, and finally the Royal Paradise of Cyrus the Great used of the benefits of water supply structures. In the construction of the dams, clay materials and ashlar or carved stone masonries have been applied, and some of them also have architectural structures with cut stone blocks. Waterways are also created in several ways on the slopes of hills and rocks.  Studies and researches show that the construction of water structures in the study area began during the reign of Cyrus the Great and expanded during the reign of Darius the Great and continued to develop until the end of the Achaemenid period. This method of exploiting surface of sub ground water resources continues to post-Achaemenid periods, especially in the Sassanid era and continues till modern times.
Keywords: Historical Dams, Achaemenid Architecture, Ancient Irrigation, Pasargadae, Achaemenid Empire.

Introduction
It is for the first time that in this era, a tremendous transformation in Iranian architecture occurred by mixing the traditions of architecture and art with the traditions of other nations that came under the umbrella of the Achaemenid government. The builders of Pasargad, in order to establish a new capital that can have a correct concept of a powerful and magnificent government center and also bring the comfort of its residents, beyond the plain of Pasargad, investigated and assessed the feasibility of all the surrounding plains , and after That Pasargad was designed and built What can be concluded from these structures is that Pasargad was not limited to the complex of royal buildings whose remains remain in the center of the Pasargad plain, and it correctly had the concept of an official and advanced capital. A wide range of infrastructures that a government center like Pasargad needs has been identified in a wide area of Pasargad plain and the surrounding plains, which is a proof of how Pasargad was built and founded. An important part of the aforementioned infrastructures is the vast collection of water structures that were designed and built in the ancient territory of Pasargad. One of the most important plans of the Achaemenid government was to deal with the water issue, which the Shah and the administrative organization had taken over the management of (Brian, 1985: 1985). In the upcoming research, an attempt has been made to introduce the Achaemenid water structures of Pasargad region and its impact on the construction and development of Pasargad. In the 1980s and 1990s, the Pasargad World Heritage Site also conducted a field survey in the Pasargad Plain and the surrounding plains (Karami and Zarei 2015), and in this research, several dams and extensive water supply networks were identified (Map 1). In the fall of 2019, from the first season of the exploration of Didegan Dam (Bostan Khani) was done and parts of the architectural structure of the dam and its wall and foundation were explored and researched, which resulted in valuable results (Karami, 2019, unpublished).

Introduction of Water Structures and Their Function
The extent and variety of Achaemenid works and sites in the territory of the Achaemenid Empire shows the intelligence and management ability of the Achaemenid government in the administration of the country in all fields, looking at the capabilities of the territory and the environment and paying attention to the culture and social capital of the various regions of the empire, which can be seen in He searched for historical documents and remains of Achaemenid works and sites.

The Effort to Manage the Country is More Visible in the Important Achaemenid Centers
In Pasargad, which is our focus in this research, various aspects of art and culture, architecture, government infrastructure, engineering and public settlements have been revealed and can clarify some of the unknowns. Whenever the name of Pasargad is mentioned, the collection of royal buildings and especially the tomb of Cyrus, the founder of the Achaemenid Empire, is remembered in our thoughts. But the Achaemenid capital of Pasargad is much wider and beyond the current area What we see today is the result of the knowledge and efforts that the engineers and builders of Pasargad have applied in a wide area of this area and have created a set of structures and infrastructures that meet the needs of the ruling center of Pasargad. One of the most important remaining infrastructures is the set of water structures that were created in the ancient landscape of Pasargad in several plains centered on Pasargad. However, metal and building stone quarries, metal smelting workshops, road networks, bridges, security checkpoints and support centers are other parts of the infrastructure works in Pasargad (Karami & Zarei, 2015). The concept of the ancient landscape of Pasargad can be considered for all the hills and heights around Pasargad, where the Achaemenid works and sites are directly related to the government site of Pasargad. The extent of this ancient area can be considered to be nearly 16,000 square kilometers based on archaeological surveys and researches, which according to country divisions includes the cities of Euclid, Khorrambid, Bowanat, Sarchehan, Pasargad, Arsanjan and Maroodasht from north to south.Pelvar River is the only permanent river in this area, the formation of settlement patterns of the first settlements from the Middle Paleolithic period until now is dependent on this river (Map 2).

Conclusion
The historical water structures of Pasargad and Persepolis are among the most prominent and valuable works left over from the Achaemenid era, which are located in the Bakhtegan and Tashk watersheds. The two main catchment rivers, Pelvar and Kor, form one of the basins in which the water from the rains in the highlands and plains flows into them in the form of flowing water and under the surface.  Due to the presence of two important Achaemenid centers of Pasargad and Persepolis in this basin and the need to provide water for them in the headwaters of these rivers, especially the Pelvar River, several reservoirs and diversion dams have been built with the aim of exploiting surface water resources And extensive waterways and water supply networks have also been established These structures include dams, waterways and water distribution networks, springs and reservoirs, and stone architectural structures for water distribution. The embankments are made of earth in the form of a hard clay core and a shell of stone debris and are mostly built on the heads of the branches, and the water roads are also on the slopes of Mahori hills and rocks and in the middle of the plains with two methods of accumulating soil and stone debris and excavating And the cutting of rocks has been created It seems that the Achaemenid engineers have selected the best and most efficient places for the construction of dams after investigating and studying the field of this basin. The mouth of mountain gorges through which seasonal rivers pass is the best place to build a dam Because the stone body of the valleys makes the dams stable and durable, and it has been easier and more reliable to contain and store the floods in the sub-branches. Due to the extent and shape of the catchment of this basin, the Pelvar river floods during rains and a large amount of water enters it, and it was not possible to control it for the Achaemenid engineers considering the facilities and technology of that era. Therefore, the best option for flood control is the construction of dams at the head of the branches and tributaries of Pelvar Also, it is easier to transfer the dams built at the head of the branches, which are located at a higher place than the plains and flat lands, and most of the downstream parts have benefited from the stored water. Apart from curbing seasonal floods, supplying water to settlements and residential areas, agricultural lands and gardens, providing water to Pasargad government grounds and especially Shahi Campus, as well as industrial uses and mills, are among the goals of building this vast complex of There have been water structures in this area The history of the construction of this set of water structures is related to the Achaemenid period, which, based on researches and archaeological documents, started from the beginning of the Achaemenid period and with the reign of Cyrus and expanded during the reign of Darius and was developed, maintained and exploited until the end of the Achaemenid period.

Abstract
Due to the climatic conditions and cutable stones, the cultural landscape of Sablan Mountain is one of the main foci of the formation of Troglodytic Architecture spaces in the northwest region of Iran. In this region, various Troglodytic Architecture spaces have been carved in different cultural periods, one of the most well-known of which is the Troglodytic Architecture collection of Abazar Nair. This collection, in the previous studies of some researchers, generally belongs to the Parthian era with the use of “mehrabah”; or the Islamic era with the use of “Buddhist temples-tombs”. However, the cultural data in this collection rejects the Mehri and Buddhist monastery hypothesis with sufficient and archaeological evidence. This research is fundamental in terms of qualitative objective and it was conducted with descriptive-analytical method, comparative studies and data collection with the help of field studies and documents-library resources and seeks to answer the following two basic questions: 1- Based on the remaining surface data. Mande, the chronology of Troglodytic Architecture Abazar space belongs to which cultural period(s)? 2- What were the functions of Troglodytic Architecture spaces (number 7) of Abazar Nair collection? The results show that the Troglodytic Architecture space in question, like other spaces in this area, had a livelihood function in the Islamic era. Other results of the research determined that the set of enclosed spaces of Abazar is generally influenced by the climatic conditions of the region and is comparable to other cut rock villages in the Sablan and Sahand mountains. The recent archaeological activity of this collection can be useful and open the way in understanding the functional nature and chronology of other cut rock spaces on the slopes of Sablan Mountain.
Keywords: Sablan Mountain, Troglodytic Architecture, Abazar Nir, chronology, Function.

Introduction
Abazar area of Nair city is the first Troglodytic Architecture area in Ardabil province that has been noticed by researchers. However, the remaining cultural materials in this area have received less attention from researchers and the most focus has been on the rocky texture of the spaces (Mohammadi-Far and Hemti-Azandariani, 2015; Azad, 2015 and 2016). This factor has caused the chronology and function of this area not to be determined precisely, and one of the empty spaces of this complex (space no. 7), regardless of the architectural elements and cultural materials left in it, is known as Mehri temple belonging to the Parthian era (Shekari). niri, 2019) and Mughal-Temple (Moradi & Omrani, 2020) of the Islamic era. This is while the main differences between the usage and chronology presented for this collection in general and the space of Troglodytic Architecture No. 7 in particular are seen, on the basis of the need to review the chronology and usage presented for this Troglodytic Architecture collection. There is especially space number 7). By examining the surface of the site and studying its cultural findings, while reviewing its chronology and function, referring to the data of the site, the authors are looking for answers to the following questions: 1- Based on the remaining surface findings, what cultural period(s) does the chronology of Troglodytic Architecture Abazar spaces belong to? 2- Handy spaces (number 7). What functions did the Abazar collection have? Carrying out this research will be an important step in the architectural studies of Troglodytic Architecture in the Sablan Mountain range, so that in future studies, along with the careful examination of the sites and the study of the remaining cultural materials, the chronology and explanation of the function of the Troglodytic Architecture spaces of this area can be achieved.

Discussion
Based on the study of the authors, it was found that the Abazar area consisted of several subsurface manmade spaces (10 units) and surface manmade spaces. These spaces were closely related to each other and all of them formed the fabric of Abazar village. Over time, the man-made spaces on the surface were completely destroyed, and today the remains of the foundations and debris of these structures remain on the surface of the area. The texture of the villages in the mountainous areas of North-West Iran has a similar architectural structure. So that in the analysis of this area, what was obtained is that Abazar area in terms of location pattern (access to water sources, location on the mountainside, proximity to pastures), structure and architectural elements and plan of spaces are similar to many others. It is one of the villages on the slopes of Sablan and Sahand mountains.  These villages were formed in a hand-made way near the water sources and the slopes of the hills. Due to the cold seasons of the year, one of the common patterns in the villages of the Sardsir districts of Azerbaijan region is to have small underground spaces where the families lived next to their cattle during certain days of the year. Such a pattern of settlement has been in place until recent years in the village of Kandavan (Razani et al., 2015), Khatb Maragheh (Starnjad et al., 2016), Ganzeq Sarein (Khanali, 2017), Yai Shahri of Maragheh, Sur Bonab. In these villages, the living spaces are located under the surface man-made spaces. Due to their living use, the subsurface spaces generally lacked complex and special architectural and artistic elements common in ritual-memorial spaces (elements such as inscriptions, altars, artistic motifs). And it only has a long manger, niche and spaces for providing light. Such elements can also be seen in the spaces of Troglodytic Architecture Abazar, therefore Troglodytic Architecture No. 7 cannot be considered separate from other spaces from the point of view of architecture and even the nature of the function. The generality of this space is exactly the same as the other spaces of this collection.

Conclusion
What was discussed in the text of the article, the environment of Abazar, like the fabric of the villages in the mountainous regions of Azerbaijan, Iran, consists of hand-made spaces. Handicapped spaces are carved under the man-made spaces, and in terms of architectural structure, plan and practical elements, many similarities between these villages can be observed. The accuracy of the cultural materials and architectural elements remaining in the hand-built spaces of this collection showed that the spaces have many relative similarities to each other and have followed a single pattern. Based on this, a touch space (space number 7) cannot be considered as a space that is excluded from other spaces. All the architectural elements such as the manger, niche, skylight, porch and the way to access the spaces show that these spaces in general and the architectural space number 7 in particular are designed and carved according to human living, based on that. Due to the lack of decorative and practical elements specific to ritual-memorial spaces (such as inscriptions, artistic motifs, columns, luxurious carving style of spaces, etc.), this complex (space number 7) cannot be considered as a space related to He considered the shrine (mehrabah). On the other hand, the nature of the prayer spaces and Buddhist tombs was also very different from this complex, therefore this complex does not have the characteristics of Mehri and Buddhist temples. The chronology of the site was based on the cultural findings left on the surface of the site. Based on these data, evidences from the historical period (especially Parthian) were not identified. These data show the most important settlement period of the site, which coincides with the Middle Ages of Islam. During this period, a cemetery with prominent tombstones was formed in the vicinity of the village. In general, the comparative study of the texture of this complex with the similar areas of Sablan and Sahand mountain slopes shows many similarities between them. Due to the cold climate of the region and to protect their lives and property, the villages of these areas used to create residential spaces in two ways: hand-made - hand-made. 

Acknowlegment
All authors reviewed the results and approved the final version of the manuscript.
 

Abstract
Bulbous domes are among discontinuous double-shell domes and were built in Iran in the early nineth century A.H. Previous domes were shaped pointed and there was no bulge coming out beyond their base diameters. But in the Timurid period, dome profile was changed so that it began a return below the base of the arch, producing thereby a slight bulge. The main question is that what are the reasons for the changes in the appearance and structural elements between two shells after the initial formation of these domes in Central Asia and then their evolution in Iran. This research is written with the aim of finding the hidden aspects in the development of bulbous domes based on both historical documents, and architectural remains, and also examines the reasons of the changes created in these kinds of domes during four centuries in the context of cultural Iran. This study has a descriptive-analytical approach for exploring case studies, which are selected based on primary and secondary sources and also field research. The appearance changes of bulbous domes include removing flutes from the outer shell, adjusting the height of the drum and creating more bulge at the place where the outer shell joins the drum. In this article, the structural changes to improve the strength of the domes, the change in the number and proportions of the stiffeners to prevent the damage of the dome, as well as the shape and arrangement of the wooden struts to increase domes flexibility against seismic shocks, have been examined.
Keywords: Bulbous dome, narrow ribs, stiffeners, wooden struts, Timurid-Safavid architecture.

Introduction
Since the most obvious feature of Timurid architecture is its splendor, the architects of this period paid special attention to the dome than other architectural elements. In this era, domes were raised on high drums, and in order to achieve desired height on the exterior, architects usually built another shell on the top of the internal one. In such a way the dome profile is changed, so that it began a return below the base of the arch, producing thereby a slight bulge. Therefore, the bulbous dome is one of the innovations of the Central Asian architects during the Timurid period. The first cases of the bulbous domes in Central Asia have flutes on the outer shell; in addition, they have an oval-shaped structure. Construction of this domes continued with a few changes during the reign of Timur’s successors in Great Khorasan and within the current borders of Iran. To put it more clearly, after the Timurid period and during the rule of Safavids in Iran, construction of these domes continued with few changes. This study is dedicated to the analysis of the process of changes and also reasons for these changes in the appearance and structural elements of the bulbous domes according to the case studied in Central Asia and Iran during the Timurid and Safavid eras. The main question is, what changes have occurred in the appearance as well as structural elements, and as a result, the stability of these domes in the Timurid and Safavid periods in Central Asia and Iran, and what were the reasons for them.
Theoretical method of this research is based on the cultural history approach. Therefore, each case is viewed as a culture. Concerning this, three domes were selected from different regions of Central Asia (Turkestan, Samarkand, and Herat) and seven cases from Iran (Khorasan and Isfahan). Three main criteria for selecting the case studies can be listed: 1. Geographical and historical context; 2. Similarities of the cases during the Timurid period in Central Asia and the Safavid period in Iran, and; 3. Authenticity of the domes.  

Discussion
All the studied domes in Central Asia have a lofty cylindrical drum. The height of the drums was adjusted in Iran during the Timurid era, in Khorasan and also in the central regions of Iran. It is worth to mention that, construction of high drums in Central Asia, during the reign of Timur, and in Iran, during the reign of Shah Abbas I, can be seen as an expression of the visual effects of architecture as a manifestation of the power and reflection of the perfectionist personality of those Kings. 
The most important exterior characteristic of the studied domes is in the external shell (Avgon), where the drum and the external shell connected to each other. Therefore, in the bulbous domes, part of the weight load of the outer shell at the junction of the dome and drum is directed inward and less pressure is applied to the base of the monument.
Flutes move from their common place at the top of the external shell to the bottom, and transfer forces and lateral loads to the inside, and enhance the resistance of the dome against the thrust forces.
In Central Asia’s domes, we couldn’t find narrow ribs on the surface of internal shell. This is despite the fact that in most of the studied cases from the Safavid period, narrow ribs were used to transfer the weight of the stiffeners to the lower parts and base of the monument. It seems that, utilize of the narrow ribs in the Safavid domes was the invention of the Iranian elite architects to give cohesion to the double-shell domes, especially bulbous ones.
From the earliest bulbous domes, we can see stiffeners between two shells. These elements have different shapes. Establishing stiffeners, especially in the Avgon part, greatly reduce the destruction of the dome during earthquakes and shows the architects’ awareness of stiffener’s structural role and function.
The wooden struts are arranged somewhat circularly to help connect the stiffeners to increase flexibility against earthquake shocks.

Conclusion 
Changing process of bulbous domes in Iran includes removing the flutes from the external shell, adjusting the height of the drum and creating an avgon with more bulge at the junction of the external shell and drum. Domes with flutes in the Central Asia were a main characteristic of monuments. It seems that use of flutes, in addition to structural reasons, also had an aesthetic aspect; because, vertical and parallel concave and convex lines on the external shell make the domes look higher and add to the glory of the whole monument. Moreover, flutes help in transferring the thrust forces entered into the building and have a function like an avgon at the place of joining the dome’s drum. It seems that removing the flutes from domes in Iranian architecture of Timurid period should be considered as a result of the lack of a single political power in different regions of the country. Among other fundamental changes, we can notice domes with more bulge. During the Safavid period, architects learned and experienced the basic stages of bulbous domes and gained sufficient skill with regard to the morphological elements of dome and its strength. In this way, for aesthetic purposes, structural solutions such as creating narrow ribs on the internal shell of the dome and deepening the stiffeners in the avgon part have been used to maintain the integrity of the external shell. One of the reasons for the construction of narrow ribs is to transfer the compressive force of the stiffeners to the lower parts and bases of the dome and to strengthen their stability. In some cases, ribs were not used to connect stiffeners to the internal shell due to small diameter of the dome span. The changes made in the stiffeners from the Timurid period to the end of the Safavid period should be considered more related to their number, shape and proportions, which can be attributed not only to the creativity of local architects, but also to the architects’ complete awareness of the role and function of the stiffeners. These structural elements prevent the destruction of domes due to thrust forces (wind and earthquake). Wooden struts also make it possible to create a better connection between the stiffeners and external shell, as well as the connection between the components of the dome.

Abstract
Tomb buildings are one of the most important types of Islamic architecture. Studying such a building in a geographical context gives us a meaningful understanding of these works. The vast region of Tabas, despite having a rich capacity of magnificent historical and cultural monuments, has been neglected by officials and archaeologists due to its desolation and difficult geographical conditions. In the archaeological study of the Jokhah section of Tabas, which was carried out in 2015, several buildings were identified, including a single tomb. So far, this building has not been the subject of detailed and methodical research on how the structure of architecture and dating is based on comparison with other mausoleum buildings, so the need for this research was provided. In this research, the construction method of the building has been considered according to the dome, the execution of the dome and the type of materials and the type of decorations used. The present research is based on a descriptive-analytical purpose and its nature is based on historical approaches. The methodology of accumulations is based on field studies and citation of library resources. This article tries to analyze the identity and date of construction of the tomb of Jokhah Tabas, based on archaeological findings, comparative studies and also citing written sources of the Islamic period. The results of studies show that the construction pattern of this tomb is derived from the square design of tomb buildings in Greater Khorasan in the early centuries of the Islamic period. However, by comparing material culture data and building elements with other similar works, the date of its construction can be attributed to the late sixth-early seventh century AH.
Keywords: Tomb, Architecture, Historical Identity, Middle Islamic Period, Jokhah Tabas.

Introduction
The tomb as a type of ritual-cultural architecture is the result of two-way interaction between man and nature throughout history. Hence, the study of these religious buildings in the geographical context, provides us with a meaningful understanding and recognition of them. In Islamic period of Iran, tomb buildings are considered one of the most important and numerous types of architecture after mosques. »The scope of construction of tombs with the emergence of different local governments in the early centuries of Hijri, simultaneously with the weakening of the Abbasid caliphate, became popular in the east and north of Iran« and it developed with a significant speed in all of Iran and found an important role in the social atmosphere of cities and villages. In such a way that it was considered the most important pillar of every city and village after the comprehensive mosques. Therefore, “cemeteries and their construction methods are very important from the point of view of architecture and the use of arched structures” and they require careful investigation and research in various fields. There are several individual tombs in Tabas, which according to historical sources belong to chieftains or clerics, after the domination of the eastern regions of Iran in the early centuries AH. As; Mohammad Jafar Tayar’s tomb in Azmighan, Tabas, Mir Omar’s tomb in Korit Tabas. One of these tombs, which is known in Islamic sources as the tomb of one of the Arab generals, is a tomb located in the historical site of Jokhah village. So far, this building has not been the subject of a detailed and methodical research regarding the architectural structure and dating based on comparison with other tomb buildings, hence the necessity of conducting this research. The brief research activities that have been carried out have mostly described the architecture of this tomb. In this research, the architectural style, decorations and functional materials of this building have been compared with the tombs of the middle Islamic period in the geographical area of Khorasan, which is more related in terms of time and place. Since the building does not have a building inscription, the name of the founder or the owner of the tomb, it is not possible to propose its date with certainty. Therefore, one of the goals of this research is the proposed dating of Jokhah tomb using comparative studies of other tomb buildings and referring to Islamic sources and texts.

Discussion
Jokhah village is located 24 km from Tabas city. A tomb building is located 500 meters southwest of Jokhah village, between the agricultural land and the village cemetery. The name of Jokhah was applied to this village in the contemporary period, and before that it was known as Chardeh. The name of this building goes back to the name of Jokhah village and before that it was known as the Tomb of Sephesalar or two commanders.
Jokhah Tomb is a type of domed square buildings. According to the remains of the building, the outer space consists of three parts, the body platform and the dome. The geometry of the plan and the form of Jokhah tomb reflects the design of Sassanid fire temples. The geometry of the building is square. The current height is about 23 feet and its foundation has been done on a platform. The materials used in the foundations of Jokhah tomb are made of clay, mud and plaster. Bricks are used only for cornering and doming of the building. The three doors of this building are in the front porch and have the same dimensions. This repetition on three fronts has given the building a special rhythm. There are three holes on the three sides of the building above each door. Due to the distinct shape of the entrance space, this building consists of four parts: the platform, the body, the entrance porch and the domed room.
The cover of the brick dome of Jokhah tomb has collapsed. This is comparable to the domes of the Twelve Imams of Yazd (5th century AH) and the tomb of Khosroabad Tabas (5th century AH). Based on the available visual sources, there are evidences of plastering in the throat of the dome and the formalization of the arches, which are considered as design ornaments in the Jokhah building. Two fine strips under the throat of the dome in the shape of the letter (kک/) are painted continuously and chainwise in black on a white chalk background. Another decoration includes a plaster strip in the shape of a seven-eighth or a congress in relief, and these two are among the most important arrays of this building. From around the building, unglazed pottery pieces with a simple linear and comb pattern, pottery types with turquoise and gilt underglaze were obtained (12-6 AH/12-18 M).

Conclusion 
The tomb is located as a single building outside the old rural context of Jokhah. The architectural features of this tomb, in terms of design and plan form, are in the group of tombs without towers, quadrangle with domes, and functionally, it is included in the category of non-religious tombs. The architectural structure of this building is very similar to the tombs of Amir Arslan Jazeb and Chalaqd in the 5th and 6th century AH. On the other hand, it has some features, especially the doming style, with the 7th AH buildings such as the Haruniyeh building and some 8th century AH buildings such as the Jame Mosque in Varamin and Jabaliyeh in Kerman. Through field investigations and analysis of the building map, it is possible to understand that the main design of the building is taken from the map of the domed square tombs of the Seljuk period, and the additional space outside the main door of the building belongs to later periods. The design of the Jokhah tomb built by Chalaqd was more impressive than the buildings of the Seljuk period in Khorasan. Also, the common features of the building such as functional elements and its materials with the Seljuk period and plaster painting decorations have shown more compatibility with the Ilkhanid period. Referring to Islamic sources and texts also does not provide accurate information about the construction time of this building. As mentioned earlier, 5th century AH, Tabas and its surrounding areas were the refuge of Ismaili claimants, and relative peace reigned in this region. In the middle of the 6th century Hijri, most of the buildings in this area and around it were destroyed by the attack of the Seljuks. Therefore, it seems that the tomb of Jokhah was formed after the aforementioned attacks. On the other hand, due to the absence of an inscription in the Jokhah building, the identity of the owner of the tomb, based on the generalization of reliable written sources of the Islamic period, goes back to a person named Malik, one of the Arab generals in the first century of Hijri. Since this building has not been scientifically explored and excavated so far, the dating of the building has been done by studying the organs, elements and comparing other tomb buildings. Therefore, the chronology of the Jokhah tomb is suggested to the end of the 6th century to the beginning of the 7th century AH.

Acknowledgment
Mr. Dr. Bahram Anani is grateful for providing information on the area of Montaziereh, Tabas.

Observation Contribution
In this article, the first author contributed 100% and the second and third authors contributed 90% and 80%.

Conflict of Interest
In writing this article, the authors are committed to scientific and research ethics and there is no conflict of interest between them.

Abstract
Residential architecture as a living space for family members has been influenced by climatic and geographical conditions. Accordingly, some methods for designing climate-responsive architecture can be seen in historic houses of Iran, such as Ashtian. Therefore, this research aims to identify the influence of climate and geography on Qajarid residential architecture in Ashtian and to elucidate the strategies and measures employed by architects to mitigate negative effects and increase beneficial climatic and geographical influences. Questions are: What is the effect of climate and geographical features on the location and spatial distribution of Qajarid houses in the Ashtian? How did climatic and geographical factors affect the plan, form, and architectural features of Qajarid houses in Ashtian? Two hypotheses are: the topography of Ashtian, watercourses, and soil type have played a role in locating houses. Furthermore, the plan, form, and architectural features of the houses were influenced by climatic factors such as wind, angle and amount of sunlight, and temperature. ArcGIS, Google Earth, WRPLOT design software, AutoCAD, and SPSS software were used for data analysis. Based on the results, the architects were started the construction of the building by considering climatic factors such as sunlight angle, prevailing wind, temperature, and humidity. They have paid attention to the type and color of materials, size of windows and doors and courtyards, and size and location of rooms. Also, based on the models obtained from WRPLOT software, the dominant wind of the region in two directions east-west and west-east was identified and its effect on architecture was explained. The results of the analysis in SPSS also show the correlation between “type of land and social class of people”, “type of land and soil with reservoirs”, and “maximum wind speed and the number of floors”.
Keywords: Qajar Monuments, Climate-Responsive Architecture, Residential Architecture, Ashtian.

Introduction
Considering the geographical divisions of Iran, different architectural features have been formed in each geographical region (Memarian, 2012: 5). Although Qajarid architecture was influenced by modernism and non-Iranian patterns, climatic and environmental features have been among the most influential factors in Iranian architecture. It seems that architecture in Ashtian also has such characteristics. The development of the city of Ashtian during the Islamic era was due to its location in Iraq-e Ajam and the route of the pilgrimage to holy shrines of Iraq (Omidbeyki, 2015: 1). In the Qajar period, Ashtian was a place of residence for virtuous and pious people, writers, scholars, and politicians (Shirvani, 1897: 42), and various types of urban and suburban residential structures were built. 
This research aims to identify the influence of climate and geography on Qajarid residential architecture in Ashtian and to elucidate the strategies and measures employed by architects to mitigate undesirable effects and increase beneficial climatic and geographical influences. The study of these residential structures, with a focus on analyzing the role of geographical factors, provides insights into the interaction between the Qajar society and the specific climatic and environmental conditions of the region.
There are two main questions in this research: What is the effect of climate and geographical features on the location and spatial distribution of Qajarid houses in the Ashtian? How did climatic and geographical factors affect the plan, body, and architectural features of Qajarid houses in Ashtian? Based on these questions, the following hypotheses have been proposed: the topography of Ashtian, watercourses, and soil type have played a role in locating houses. Furthermore, the plan, form, and architectural features of the houses were influenced by climatic factors such as wind, angle and amount of sunlight, and temperature.

Discussion
In this study, eight Qajarid residential buildings in Ashtian County – as a cold and dry region in the Markazi Province - were studied, which are: the houses of Mirza Hedayatullah, Mirza Hasan, Nuraee and Mo’tamed al-Ayalah, as well as Mustofi Al-Mamalek (Agha) castle in Ashtian city, Abdulazim Gharib house in Garekan village and two feudal castles in Ja’farabad village (Figs 2-9). 
Based on the Google Earth photos, the Qajarid houses in Ashtian have been located in the middle of the southern slope of the mountain. Because the northern slopes of the mountains are in shadow and colder (Ghobadian, 2018, 101-102), While the southern slope is sunny and has better conditions for residence and other activities. Watercourses are usually threatened during floods and pose a threat to settlements (Negarsh, 2003: 137). The topographic analysis of the watercourses and hazardous slopes around the studied buildings indicates that less attention has been paid to the issue of watercourses in Ja’farabad, Garekan, and Ashtian. Furthermore, the city of Ashtian is located on QT2 soils, Ja’farabad on QT1 soils, and Garekan on MS and MQ soils (Figure 10). Based on this, the lands of Ashtian and Ja’farabad are relatively homogeneous in terms of resistance and provide relatively favorable conditions for construction. However, Garekan lands are weaker for building construction. In Addition, a very strong fault called “Talkhab” extends northwest to southeast, passes 12 kilometers southwest of Ashtian and 4 kilometers northeast of Ja’farabad (Fig 11). Historical reports also indicate destructive earthquakes in the years 855 AD, 958 AD, 1177 AD, 1316 AD, 1495 AD, and 1962 AD in this area (Ghodrati et al., 2010: 184). Therefore, the location selection of houses in the cities of Ashtian, Ja’farabad, and Garekan has been carried out without considering the earthquake hazard. 
The most prominent architectural features of cold and mountainous regions include small and confined urban and rural spaces, compact structures with interconnected buildings, narrow streets with limited width. Furthermore, Attention is given to solar orientation (Ghobadian, 2018: 99). The urban spaces in Ashtian are also small and confined, with a compact urban fabric (Figure 12), as well as Garekan and Ja’farabad. The main streets and thoroughfares are also narrow and have limited width. 
The study of the influence of the angle of solar radiation on the monuments of Ashtian for 11 AM at the beginning of each season showed that the difference in the angle of solar radiation between summer and winter in these regions is more than 35 degrees (Table 1). For this reason, a porch has been built in the north face of some houses, including Mo’tamed al-Ayalah, Nuraee, and Ja’farabad castles. The roof of these porches was like a canopy, and it protected the openings from the hot summer sun. But in winter, the slanting sunlight penetrated the into the interior spaces. Also, the orientation of the axis of the house plans in the east-west axis made the sunlight to be received more in the cold winter mornings in the southern facades.
In these buildings, the percentage of open space or courtyard area compared to the total building area is less than 35 percent. This is because in areas where the temperature is cold or very cold for most days of the year, most daily activities take place indoors. In the buildings of Ashtian, small openings were used to prevent heat exchange between the interior and exterior of the building. In the design of these openings, in addition to light, ventilation and the utilization of pleasant winds or prevention of unpleasant winds have also been taken into consideration. The output of modeling in WRPLOT software indicated that the prevailing wind in this city is predominantly east-west and west-east (Figure 13).

The outputs of the SPSS also showed the following
- A relationship between the type of land and the social class of the people living in the house: political people and officials have chosen areas with more suitable soil.
- A relationship between the type of land and soil with the presence of a water reservoir in the building: all Qajarid buildings in Ashtian city had water reservoirs. However the residents of Ja’farabad did not need a water reservoir. Because the underground water and the aqueducts were rich.

Conclusion
The study of Qajarid houses in the city of Ashtian has shown that some geographical and climatic factors have influenced the location, plan, structure, and architectural elements of these houses. However, architects have also overlooked some climatic and geographical variables in the location, design, and construction of these houses. In response to the first question, it should be noted that although these houses have been strategically and intelligently located in the southern foothills to easily capture sunlight and solar energy, they are all exposed to the risk of floods from the north and northeast along the watercourse. Nevertheless, the principles of urban space design and construction in mountainous and cold regions have been maximally observed in the city of Ashtian, and the analysis of the urban fabric and space in Ashtian indicates narrow streets and the integration of architectural units for better adaptation to the climate. Regarding the second question, this study has shown that the principles of design and construction of residential spaces, including plan, structure, architectural elements, and materials, have largely obeyed climatic and geographical factors such as the direction and intensity of sunlight, the prevailing wind direction, and the temperature in summer and winter. For example, the roofs of the buildings are flat, and the windows are small and proportionate to the direction of the sun and the prevailing winds of the region. The positioning of the windows facilitated the absorption of solar heat in winter and ventilation in summer. Small central courtyards and open spaces have been built in accordance with the climate of Ashtian. The number of floors in these houses corresponds to the intensity and speed of the wind, and the presence of architectural spaces with specific functions, such as water reservoirs, depends on the type of soil and the geographical characteristics of the region.

Abstract
Excavations at Gird-iAshoan, An Archaeological mound in Piranshahr County in the Lower Zab Basin, provided remarkable insights into cultural traditions characterizing the region in the Late Chalcolithic. Whilst reflecting some indigenous peculiarities, its material culture exhibits broad affinities with Northwest Iran, Caucasia, and Anatolia. This evinces the spread of the Late Chalcolithic (LC) cultures, especially LC2‒3, over vast territories, which could imply either population movements or spread of a certain pastoralist subsistence system. of the total of four architectural phases presently known from the Chalcolithic deposits of Gird-i Ashoan, the two upper phases were recorded in the first season. Phase 1 consisted of dry-laid stone walls in the northern quadrant of the trench,while Phase 2 was represented by perpendicular mudbrick walls beginning from -3.43m and ending at -3.62m. The recovered mudbricks measured 40 × 60 cm. In this paper, an attempt is made to explain the cultural relations of the Zab basin with other regions by presenting a detailed stratigraphy, and an analysis of the recovered architectural remains. To conclude, observations made at Gird-i Ashoan suggest that in the fourth millennium, the Early Chalcolithic III‒II culture reached the Zab region, where it would eventually be replaced by the subsequent Hasanlu VII culture. In this article, we will introduce the Architecture remains and the methods. With its thick deposit of 8.65 m, Gird-i Ashoan in the Zab basin represents a key point in northwestern Iran.
Keywords: North-West Iran, Pisdeli, Late Chalcolithic Period, Mud-brick Architecture, Chaff-Tempered (CFW).

Introduction
The opening of the 5th millennium BC coincided with the arrival of the Dalma cultural tradition, which extended over vast territories (Hamlin 1975; Henrickson 1983; Henrickson and Vitali 1987). It was to be superseded in the mid-5th millennium or somehow later by the Pisdeli tradition (Dyson 1968; Dyson and Young, 1960: 20). The Pisdeli horizon, designated as Hasanlu Period VIII, was dated between 4300‒ 4500 BC (Voigt and Dyson 1992), which is also corroborated by radiocarbon dates (Danti et al., 2004). It was eventually replaced by the cultural tradition of the Late Chalcolithic in the region. An outstanding question about the period in northwest Iran concerns the little-known phases of Late Chalcolithic III‒II. The time-span is of particular import for the regional archaeology as it has a bearing on the phenomenon of social complexity and the beginning of the urbanization. Unfortunately, ambiguities remain about the chronology of the period due to the lack of regular excavations. Although recent discoveries have provided new information in this regard, the absence of serious excavations of the Chalcolithic deposits deprives us of the attributes of the coeval culture. Mellaart regards the Ubaid as a Late Chalcolithic culture (1966). Helwing splits it into three sub-periods, with the earliest being the Pisdeli (LCh I) (Helwing, 2012: 204) and the Chaff-Faced Ware (CFW) typifying the subsequent LCh III ‒II (Helwing, 2005). In Iran, related material is currently known from Gird-i Ashoan and Kul Tepe, while beyond the Iranian borders they occur at several sites, among them being Çadır Höyük, Kenan Tepe, Arslantepe, Barcın Höyük and Höyük in Anatolia and Leyla Tepe, Beyuk Kesik, Mentesh Tepe, and Alchan tepe in Caucasia (Baxşeliyev, 2010).
Following preliminary inspections, Gird-i Ashoan was selected for excavation in 2019 as the key Late Chalcolithic site. Among the main objectives of the present study were gaining an insight into the settlement sequence, examining the Hasanlu VIII cultural tradition of the Zab basin in light of recent archaeological finds, and investigating the cultural interactions of the local populations with the neighboring regions. Attempts were made to obtain a better understanding of the Late Chalcolithic cultural horizon. The excavation at Gird-i Ashoan yielded a assemblage of Pisdeli painted ware (LCh I), while the LCh III ‒II ceramics, the so-called Chaff-Face Ware native to northern Mesopotamia, were attested in abundance. In the period that immediately followed the Ubaid, North and South Mesopotamia each began to proceed along different directions culturally. Hence, the southern sphere witnessed the spread of the Uruk tradition, while the northern one would be overwhelmed by the Chaff-Faced Ware culture (Kepinski, 2011:65). This ware type occurs over vast territories, which also includes northwest Iran, where the related material culture and chronology share wide affinities with the sites of North Mesopotamia, Syria and East Anatolia, in particular by the latter half of the 4th millennium (Helwing, 2004:16). The location of Gird-i Ashoan close to northern Mesopotamia and eastern Anatolia significantly contributed to the materialization of the shared traditions. 
  East Anatolia, South Caucasia and Northwest Iran served as the milieus for the genesis and further development of the Chaff-Faced Ware tradition and later the Kura-Araxes culture. The regions have always been the crossroads of various peoples with diverse ethnic and cultural affiliations, and most of the migrant or invading groups would cross them in their east-west movements over the centuries. 
Geographic Location of Gird-i Ashoan 
The mound lies at UTM X.520062 Y.4057880 at an altitude of 1415 m, at the eastern fringes of the Piranshahr plain, on the east bank of the Lavin River. The northern and western flanks of the mound are about 330m and 450m off the riverbed, respectively. The site is within the boundaries of the modern village, flanked by its buildings. It is a mound with a circular base of about 55 m in diameter. Measuring about 55m north-south and 50m east-west, it occupies a total area of ca. 2750 sq. m. The east and south slopes gently descend against the walls of the villagers’ houses. 

Pottery
Pottery represents the most abundant category in the artefactual assemblage. The pieces are plain, with a profusion of chaff and fine grit added as temper to their fabric, leaving them with a pockmarked appearance, thus the designation “chaff-faced pottery.
The sherds from Gird-i Ashoan have brown, orange, and grey surfaces, are poorly fired, and bear a thick slip, though rare examples of thin slip are also attested. The applied ornamental elements include carved motifs and incised grooves. The ceramics of the Late Chalcolithic III and II are invariably chaff-tempered and handmade.
The pottery falls into three categories: plain, incised and painted. The last is represented by three sherds of Pisdeli type bearing black motifs on a buff ground. As regards morphology, the excavated pieces can be divided into several groups: 1. Open pithoi with everted rim, which are the most common form at Gird-I Ashoan and exhibit the closest ties with different regions of Anatolia, the Caucasus and Mesopotamia. 2. Open bowls. 3. Shallow trays, albeit in extremely limited numbers. 4. Closed jars. 

Architectural Remains
Mudbrick wall: Part of a brick wall (F.1017) was exposed along the southern section of the trench. It began from -2.35 m and continued to the depth of 3.19m. The individual grit and sand tempered mudbricks variously measured 60×40× 9cm, 56×39× 9 cm and 56×32× 9 cm, and ranged from brown-buff to red-brown in color. Both the bricks and the wall oriented north-south. The surfaces of the wall was lined with a clay coating that contained the same grit and sand particles. The small segment uncovered at the center of the trench near the southern section represented the corner of two perpendicular walls: the north-south wall of F. 1017a and the east-west wall of F. 1017b . The associated floor surface was recorded at -3.19m. It consisted of a compacted silt-clay deposit mixed with sand, charcoal particles and ash. In is notable that the floor surface sealed a layer of debris that was accumulated over time. 
At a depth of 3.62 m near the western section, a pottery vessel was found to be intentionally included into a 55×55 cm mudbrick. This poorly fired vessel was made of a chaff-tempered fabric with a black core. Quite interestingly, the embedded vessel was meant to serve as reinforcement.
Mudbrick floor: Near the western section, the mudbrick floor (F. 1021) was encountered at -3.5m. The structure was formed by laying down brown mudbricks of varying dimensions. Recorded were square (55×55cm) and rectangular examples as well as fragmentary bricks set, rather irregularly, into a red -brown clay mortar. In two cases, the mudbricks were reinforced by embedding insufficiently fired pottery vessels of a paste with black core. The exposed part of this flooring extended 0.7m north-south and about 0.4m east-west. A very small part of a second flooring (F.1022) was cleared in the southeast quadrant of the operation at the depth of 3.95m.
With its thick deposit of 8.65m, Gird-i Ashoan sited in the Zab basin represents a key point in northwestern Iran. 

Conclusion 
Excavations of Gird-i Ashoan revealed an LCA deposit, which extended from the depth of 1.00 m down to a depth of -9.65 m. Results from the excavations of the site are indicative of the interactions and cultural similitudes of the occupants of Gird-i Ashoan with northwest Iran, north Mesopotamia, Anatolia and Caucasia. The period is marked by the spread of the technological horizon of Chaff-Faced ware, a widespread cultural phenomenon covering vast territories, (Palumbi, 2011: 211; Helwing , 2012:  204) which displays fairly consistent cultural attributes (Helwing 2012:  207).
The material culture from the site exhibits close relationships with those of the coetaneous centers of the Lake Urmia region, on the one hand, and Anatolia, Caucasia and Mesopotamia, on the other. In effect, given the geographic location of the Zab basin as a cross-regional crossing, we may conjecture that Gird-i Ashoan might have served a transitional role in this communication network. The hypothesis seems to be confirmed by the discovery of the obsidian pieces. To conclude with, observations made at Gird-i Ashoan suggest that in the 4th millennium the Early Chalcolithic III‒II culture reached the Zab region, where it would be eventually replaced by the subsequent Hasanlu VII culture. 

Abstract
Architectural remains are as the “foundation” of archaeological research, these evidence can be described with words, numbers and precise and clear drawings. But the interpretation of architectural remains and worldview contexts related to human social behavior are still problematic. Architecture is related to material remains, but we must remember that ultimately these remains reflect the customs and worldview of the respective societies. There is no doubt that the individual household unit changes successively over time to accommodate nuclear and extended families, groups, tribe, etc. Cheshme Rajab site is located in Lorestan province, Kohdasht County - Konani district, 500 meters north of the Symareh River, 6.5 km from the top of the Symareh dam, and in the cultural domain of central Zagros. It is considered one of the key sites for the study and cultural developments of the rural settlement period of the region and Zagros.  In April 2019, the second season of extensive (vertical-horizontal) archaeological excavations was carried out by creating three trench in the center, west and south of the site in order to know and be aware of the cultural developments in the region in the said Tepe. The current research is based on the presentation of the exploration results, the discussion of its architectural data analysis. This research  is done with a fundamental purpose and its data collection method is based on the field and library method, and in it, while introducing and describing the architecture of this site, we seek to answer the questions regarding the architectural condition of this site, such as whether it is right-angled and... Which period does the site belong to? Also, based on the results of the archaeological excavation, it can be said that in terms of the obtained works, it belongs to the late Neolithic and Chalcolithic Period.
Keywords: Symareh, Cheshme Rajab, architecture, Neolithic Period, Chalcolithic Period.

Introduction
The water catchment basin of the Symareh dam is located at the intersection of the common border of Lorestan and Ilam provinces. Symareh, having a different environment (mountainous, plain and hilly), located in the central Zagros basin and adjacent to the lowlands of Khuzestan and Mesopotamia, has always been the focus of different cultures. In general, due to the special biome and diverse geographical texture of central Zagros, this site has long played a key role between Mesopotamia and Khuzestan and the highlands of central Zagros. The changes of intra-regional (environmental) factors cause the abandonment or burial of villages and hamlets that were formed on the side terraces of the Symareh River, and these developments are important for archaeological research. The presence of small and large terraces of sedimentary deposits, fresh water springs, the use of pasture land, rock shelters, etc., are important factors for the emergence of settlements in this region in the prehistoric period (Introduction). et al., 2017: 3). In the meantime, the excavations of the Symareh dam basin have provided valuable information about Neolithic and Chalcolithic Period cultures. In the investigation and identification of the cultures of the Symareh dam basin, Cheshme Rajab site in 2007, by Abbas Moghadam and colleagues; the first season was explored by stratification but did not reach the virgin soil, the second season of archaeological exploration was carried out in 2010 by Abdul Reza Mohajeri Nezhad. According to archaeological research and excavations, most of the settlements during human settlements since prehistoric times have been located in line with water resources that have suitable environmental conditions. Therefore, the catchment site of  Symareh River is not exempt from this case. In 2007, the investigation and rescue excavations of the Symareh dam were able to investigate many ancient sites and clarify the time period of ancient times. Also, the Cheshme Rajab site is one of the important and key sites of the Symareh basin for investigating the process of cultural developments during the realization period of the Zagros region. One of the goals and necessity of the research in the Cheshme Rajab site is to investigate and analyze the architectural findings obtained from the Chalcolithic Period of this site. The main question of this research is trying to determine which cultural period the architecture obtained from Cheshme Rajab’s surroundings by examining the settlement style belongs to. Based on the results of archaeological excavations, it can be said that in terms of the obtained works, it belongs to the late Neolithic and Chalcolithic Period.

Research method
The current research has a qualitative and strategic system and is based on fundamental goals and is historical in terms of method. The method of data collection has been carried out in two ways: field and library. In the field method, the desired samples have been examined and studied. The basis of analysis relies more on internal information and findings, and the second method is a library that draws conclusions by matching and comparing data at the same time and by matching and analyzing them.

Discussion
The people living in Cheshme Rajab lived in rectangular houses. The main materials used in the construction of houses are materials such as crushed stone (river), mud mortar and plaster, which are taken from the natural bed of the region and due to the easy access and experience of the residents of the region, in angular and almost rectangular spaces, as a unit. They have used a building in rammed floor or rubble and almost regular clays and a mold that was a combination of straw, sand and river mud. According to the time frame of Cheshme Rajab, from the beginning of the Neolithic period, it seems that since this time, due to the easy access to stone, they have started to build buildings with stone carcasses, which have taken a step towards monotony (old village settlement). The obtained architectural remains indicate the construction of angular chambers made of crushed stone with a floor of rammed earth and sometimes cobblestones were used. The coherent architecture that was obtained from Pit 1 has not been observed in any of the contemporaneous sites in central Zagros, also in Pit 2, evidence of an industrial trench was found, which is unique in its time period and can be a sign of a specialized society. In this trench, several clay sherds were found, which were probably a sign of a spinning trench. Such Spindle Whorl in the Symareh basin were previously also reported from Chararo, but there was no discussion about the existence and acquisition of the trench (Hessari et al., 2012: 94), the emergence of these evidences either from the Rajab Spring or from Chararo itself. It shows the emergence of an advanced society that they created a spinning trench, although Henrikson, by studying the architectural structure of Tepe Segabi A in the Godin VII period, believes that this structure was a mass production trench and a skilled and expert group was engaged in it (Henrickson, 1988: 10) And later Badler and Rothman were also of the opinion that at the end of the Middle Chalcolithic Period and the beginning of the late Chalcolithic Period in the Godin VII period, Zagros-centric societies are passing from simple and equal societies to rank societies (Rothman & Badler, 2011: 80).Despite the fact that in the west of Iran, simple village-dwelling and herding communities live and we do not see evidence of social complexity and inequality in them (Mohammadi-Qasarian, 2021: 19), at the same time, in the northern and southern Mesopotamia, we see large site that reach up to 15 hectares in size. (Trentin, 2010). The round temples in Erpachie and the big temples in Eridu indicate the formation of societies with social complexity (Stein, 2012: 130). This issue is also true in the southwest of Iran (Holl, 2002: 178), while no signs of social complexity and progress can be observed in central Zagros (except Cheshme Rajab & appeh Chār Ārou) at this time, even the spread of Dalma pottery and the similarity Together, they raise the hypothesis for some researchers that maybe this pottery was produced in a certain center and was distributed throughout Zagros (Henrickson & Vitali, 1987: 40), but so far there is no work that confirms this hypothesis. Among the materials found in Cheshme Rajab, it can be a proof of an advanced society.

Conclusion
The Symareh River is a river that drains the entire region and the change in its behavior has had a tremendous impact on the geology of the region and the way humans have settled. Due to the strategic location of the Symareh Valley in the west and southwest of the Iranian plateau, it has been considered as an intercultural communication route since ancient times. The location and geographical conditions (Symareh alluvial valley, great heights of Kabirkoh and its pastures, Symareh river, alluvial and rich lands of the region) have provided ideal conditions for agricultural life and animal husbandry in the region. According to the obtained architecture, the residents of Cheshme Rajab have settled in right-angled houses with a rectangular layout and the use of natural materials of the site. The main materials used in the construction of houses are irregular rubble and molded clay with mud mortar. Inside the architectural spaces, there are traces of ovens, food storage pots, the existence of their large objects and counting objects, which are direct evidences regarding the storage system of the residents of the site during the Chalcolithic Period.An architectural space for industrial activities with clay flooring, clay Spindle whorl, works of pottery kilns, welding kilns and pottery that fell due to high heat, which shows that architectural spaces were used for industrial activities in addition to residence. During the Chalcolithic Period, like in other sites, especially central Zagros, the inhabitants of the site gathered bodies under the floor of residential spaces and buried small decorative objects and children inside burial vats. Other findings obtained in the site, such as obsidian blades, show the connection of the residents of this site with other places (Northwest and Anatolia) and the presence of clay Spindle whorl are direct evidence of the advanced spinning activities among the residents. Also, according to geographical conditions and environmental factors, the existence of extensive pastures in the site and spinning spindles are indirect evidences related to animal husbandry activities among the residents of the site.

Abstract
In the traditional architecture of Shushtar, as one of the architectural types of Iran, there are examples of architectural regionalism approach. Houses decorated with motifs, designs and decorations, which have given a special glory to the architecture of this city with a combination of three materials, stone, plaster and brick. A small part of the patterns and decorations of these houses is in the entrance area of the main door, but most of the decorations and arrays are in the interior of the houses of this city. Most of these houses are known by the name of the owner or owner. One of these houses is “GhasabNejad” house. This house is a dominant example of Shushtar decorated houses. This research is done with the aim of getting to know better about the decorative elements and motifs of Shushtar city as an example of warm and dry regional architecture and at the end of the article, the question of what and why are the three decorative motifs and elements of Shushtar Butcher House, based on the critical regionalism approach The answer is given. The information of this article was collected in the field using visual and library evidence and presented in a descriptive and analytical way.
Keywords: Shushtar Traditional Architecture, Ghasabnejad House, Critical Regionalism, Anthology Networks, Brick and Stone Decorations.

Introduction
Shushtar is one of the old cities of Iran, where there are monuments from different historical periods. This city was prominent as the center of Khuzestan during the Qajar period and most of the existing works of residential architecture with decorative elements are attributed to this period. Among the important buildings of this city, we can mention the “Afzal” complex, the houses of “Marashi”, “Mustafi”, “Bakal-Sadat”, “Gazer”, “Qasabnejad” and the like. In addition to the specific and functional architecture, the mentioned buildings are decorated with arrays that stand out like a beautiful painting on the walls. Harmonious proportions, various visual elements including line, surface, volume and texture in combination with light and shadow, appropriate combination of components such as lungs, frames and borders, headers and the quiet whisper of change from pattern to frame and from frame to surface of some of these buildings. The city built something that the concept of well-formed calligraphy tradition can be applied to parts of these buildings. In the area surrounded by the two branches of the Karun River in Shushtar, the building studied in this research is GhasabNejad’s house. This building located in “Dol Dol (Moghi)” neighborhood is located in the vicinity of Gazer’s house and belongs to the Qajar period, which was renovated in 2016 under national registration number 29157 and at the end of 2016. This house consists of four floors, ground floor, first floor, Shabestan, and Shawadan. Due to its area, this house is one of the historical, large and highly decorated houses of Shushtar and has triple motifs of stone, plaster and brick. According to what has been said, the purpose of the current research is to study the types of motifs used in GhasabNejad’s house in order to better identify the historical houses of Iran, and finally to the question of what and why are the motifs and three decorative elements of Shushtar’s Butcher’s house, based on the approach of critical regionalism The answer is given. The discussion about the architectural and structural elements of this house, such as arches, columns and the like, is out of the scope of this research.

Theoretical foundations
Since this research focuses on architectural decorations, the three decorative elements of butcher houses are analyzed as an example of Shushtar houses, based on the approach of regional architects. Critical regionalism is a middle ground between the two, with regional preferences that are not identical to native architecture. From Frampton’s point of view, local cultures should be viewed in a way that is modern and has the ability to become modern. Achieving critical regionalism is the exploitation of local characteristics inside and outside the modern building form and does not mean returning to traditional building. Frampton calls this type of architecture, which resists the trend of homogenization of world architecture, as critical regionalism (Tadjdee and Islami 2018: 22, quoted by Frampton). In Table 1, the features of regionalist architecture are stated in terms of Islamic and modernism.

GhasabNejad’s house 
GhasabNejad’s house is one of the historical houses of Shushtar city, which is located in “Doldol (Moghi)” neighborhood, adjacent to “Gazer” house. This house, like most of the remaining traditional houses in this city, belongs to the Qajar period, which, in addition to the traditional architecture, has different decorative arrays. About the history of ownership of this house (Fig.  1) (Fig.  2) shows the plan of these two complexes. Currently, both parts of this historical house have been registered in the national register. The architect of this house is “Mohammed Taghi Mimarbashi Shushtri” according to the inscription that is located near the porch of its outer part (Gazar House) and the date of completion of the building is 1277 AH (photos 3).

Decorations of GhasabNejad house
GhasabNejad house has triple decorations of stone, plaster and brick. Brick patterns are like (Fig. 4). Another part of the decorations of the old houses of Shushtar is the butcher house of Setonah, which is built with materials such as stone and brick, and their decorations include the motifs of “Kartele”, “Baik” and “Congress” (Fig. 5). Plaster grids are among other motifs used in Shushtar houses, which are placed on the facade of the building and usually between the arches and above the windows. In addition to decorative use, these elements were used to ventilate the air and let light in. (Fig.  6). Fig. 7, shows the three decorations of GhasabNejad’s house. The stone decorations include animal and plant motifs, each of which has different meanings. (10) The location of the plaster grids is also shown. Also, pictures (11 and 12) show other brick motifs in the butcher’s house building.

Conclusion
Three elements, brick, stone and plaster, are the main materials of Shushtar architecture and its decorative arrays, which were used in GhasabNejad’s house with refinement and merit in the structure and decorations of the building. The materials, motifs, form and decorations are common in most Shushtar houses, with the difference that each architect has made changes in them according to the personal taste and interest or the opinion of the owner of that building. The stone carvings of the butcher’s house include animal motifs such as peacocks, parrots and plant motifs such as lotus flowers. The roles of these animals and plants are sometimes mythical and probably liked by the architect or owner of the building and according to the cultural conditions of that time and the owner’s financial ability. The motifs of Golchin Gachi networks are a combination of Islamic geometric Chinese knot motifs and its famous shamsehs, and one case is a combination of Chinese knot and cedar tree. The decorative brick motifs of this house are arranged on the top of the porch and the edges around it. There are three motifs, Serzi Sarbala (in the local language), on the top of the porches, and complex key armband motifs, and one, two, and three plains, are engraved on their margins. The technique of performing brick patterns above the porch is flat and their edges are highlighted. The pattern of the columns was from the Moqrans design shared by the houses of Shushtar, such as the pattern of Kartele, Congress and Beyk. Some roles have been named according to their resemblance to something else. Like the pattern of the head below the head, which is similar to the pattern of the mat.
The reason for the use of these decorations is to align with Shushtar’s traditional architecture and this feature is consistent with the regional preferences side of the critical regionalists’ approach in architecture. Following this tradition, there are brick patterns on the front of the porches and on the outside of the houses, stone patterns are on some of the gates, considering the structural function of the stone, and plaster grids are also implemented in the upper part of the building. Among the three elements used in GhasabNejad’s house, the patterns of the front bricks of the porches were functional, mostly decorative, and the stone carvings and plastered grids had both decorative and practical functions. In this building, in addition to the decorative function, these three elements have been used to express the spiritual, material or traditional interests of the owner of the property. Among the three mentioned elements, according to the long-standing media tradition, stones have always been the representation of the personal feelings of the architect or the owner of the building.
Relying on the approach of critical regionalism, it can be said that the stone element is a special functional and decorative element in the architectural structure of Shushtar city as well as GhasabNejad’s house, which makes the architecture of this city different even compared to its neighbor, Dezful. It originates from the stone bed of the city and the presence of stone mines near the city of Shushtar. It seems that the architects of Shushtar have taken advantage of their unique native and regional element in building in the right place. Also, perhaps the use of stone for personal expression reminds us that the oldest means of expressing human emotions in a space other than its original place, i.e. mountains and deserts in the man-made environment, is still capable of expressing human emotions. The tradition that started from the heart of the mountains, rocks and caves continued in the cemeteries and the like, and in public and private places, it has a dual function of structure and media.
  The adaptation of architectural elements, especially the triple arrays of GhasabNejad house as a relatively complete example of Shushtar’s traditional houses, showed that the architecture of this house is compatible with most of the features of the critical regionalism approach, despite the time difference and the youth of the critical regionalist architecture discussion with ups and downs. The use of stone in the building as a special local element and the presence of a parrot in the stone bearer inscriptions as a non-regional bird in this building are two important features of the critical regionalism approach that has been digested in Shushtar’s architecture.

Abstract
The concept of “manifestation” (Tajalli) is one of the fundamental concepts of Islamic wisdom and mysticism, which has its roots in the Holy Qur’an and the traditions of the innocents (peace be upon them), and from this passage, it enters the tasteful language of Muslim mystics, especially Ibn Arabi, pay special attention to it. they do. With this description, since the issue of manifestation in art finds a special place in mystical discussions and since one of the basic principles of the art of calligraphy is indeed “refinement” (Sh’an) and until the rust is not removed from the heart and refinement is not achieved, an image in it will not be manifested; Therefore, it seems that through the expression of this concept of manifestation, a close bond is established between mysticism and calligraphy. Based on this, the current research has tried to answer these two questions: 1. What is manifestation and what is its place in our sacred and mystical texts? 2. What is the relationship between manifestation and the theoretical foundations of Islamic calligraphy, especially “refinement” and “dignity” (Safā)? In order to reach a clear answer to these two questions and to establish a bridge between mysticism and Islamic calligraphy and to find the mystical dignity of “manifestation” in it, therefore, first the meaning of manifestation in religious sources such as verses and narrations was discussed and then in mystical texts (according to Ibn Arabi and mystics before him) has understood its meaning. In the following, the category of sanctity in calligraphy is discussed and based on the twelve principles governing it (according to the text of Babashah Isfahani’s Adab al-Mashq), the connection of “manifestation” with “refinement” and “dignity” in Islamic calligraphy and its relationship with its beauty (Hosn) is examined.
Keywords: Manifestation; Principles of Refinement and Dignity, Islamic Calligraphy.

Introduction
The fact is that there are not many sources about the wisdom of the origin of calligraphy and the investigation of its intellectual foundations among different Islamic nations. Therefore, there is no escaping the issue of having an opinion on the intellectual foundations of some Islamic sages and thinkers, although of course they have not directly addressed this specific issue and their talk has always been art in general. But what stands out more than anything else in the study of the wisdom of Islamic art is its wealth of terms such as intuition, presence, manifestation, imagination, discovery, dignity, love, etc. These terms find a special place among great people such as Suhrawardi, Ibn Arabi, Mulla Sadra and others. Meanwhile, the issue of “manifestation” in art has a special place in his mystical discussions. Therefore, it seems that since one of the very important principles of calligraphy (among its twelve principles) is indeed “dignity” - and a special meaning is meant by it and it is the foundation of the next stage, namely “dignity” - there is an inseparable relationship between mysticism and Calligraphy is in place. Therefore, the main preoccupation of this article is to find convincing documents and proofs related to the keyword “manifestation”, both in sacred and mystical texts and in texts related to calligraphy, to prove the mentioned claim. Based on this, the present research pursues two specific questions: 1. What is manifestation and what is its place in our sacred and mystical texts? 2. What is the relationship between manifestation and the theoretical foundations of Islamic calligraphy, especially refinement and dignity?

Discussion
Holiness has a long history in Islamic calligraphy. Undoubtedly, calligraphy has taken its sanctity from the Qur’an, which, as the first and most glorious Islamic art, has actually been the closest companion to the Word of Revelation. References in the Holy Qur’an such as “Nun. By the Pen and the [Record] which [men] write” (Qalam, 1) and the use of words such as tablet, pen, chair, line, cut letters, etc. also confirm this sanctity. Calligraphers in this position, knowing this sanctity, pay attention to the beauty of their handwriting so that the truth hidden in words is not hidden in the image form of calligraphy and is revealed in the best way. Calligraphic writing is not the same as calligraphy, but it implies a meaning, and the external role is to express a hidden role. Rumi has mentioned this in this regard: “No calligrapher writes line by technic/ The same line is not readable” (Rumi, 2013: Book 4). On the other hand, the wisdom of Islamic art, with its mystical base, is full of terms such as intuition, presence, manifestation, imagination, discovery, dignity, love, etc., which cannot be expressed and interpreted except with the language of judgment, and the audience as well. If he is not familiar with this language, he will not be able to understand it. With this description and according to the opinions of Islamic mystics - the most important of which was given in the first part of this research - the manifestations of holiness in the lives of Muslims are revealed. By generalizing his opinions to the field of religious art, Islamic art and sacred art, we can find the mysteries in Islamic calligraphy. The juxtaposition of the old popular myths with the opinions of Islamic thinkers, symbols, codes and its influence on Sufi intellectuals and popular culture, all lead to the discovery of relationships that show the sanctity in this art more than ever before.

Conclusion
The current research has clearly sought answers to two questions: 1. What is manifestation and what is its place in our sacred and mystical texts? 2. What is the relationship between manifestation and the theoretical foundations of Islamic calligraphy, especially dignity and dignity? In order to reach a clear answer to these two questions and establish a bridge between mysticism and Islamic calligraphy and find the mystical dignity of “manifestation” in it, the meaning of manifestation in religious sources such as verses and hadiths was first discussed. We saw that in this regard, this concept occurs in the most obvious way possible in the noble verse 143 of A’rāf, which is known as “the manifestation verse”. With this meaning, it is from manifestation that the divine names and attributes appear in the world and explain the nature of God’s relationship with his creatures. In addition to the Qur’anic verses, in many Islamic traditions, relying on those verses, especially “the manifestation verse,” God’s relationship with creation is mentioned, especially in sermons 108 and 147 of Nahj al-Balagha, where God manifests himself to his creatures, without them seeing him. And this is where the difference between manifestation and incarnation in Christianity is established. In addition to verses and traditions, this concept finds a special place in mystical texts, especially Ibn Arabi, which is one of the pillars of answering the above questions. Of course, with the mystics before Ibn Arabi (such as Hasan Basri, Rozbahan Baqli, Bayazid Bastami and others), manifestation has an intuitive meaning, meaning that the seeker goes through the states and mystical Authorities one by one with the intuition of the actions, attributes and nature of the Supreme Being. According to Ibn Arabi, a metaphysical (existential) meaning is also meant by it, which explains the system of existence and the way of connecting truth and creation and the connection of the world of multitudes with the absolute unity of truth. While discussing this concept, Ibn Arabi discusses the heart, which is the bearer of divine manifestations, and maintaining its dignity is the duty of the seeker, so that the heart does not have dignity, and the names and attributes of the Most High do not manifest on it. The existential meaning of manifestation according to Ibn Arabi is that for the appearance of different levels of beings, the existence of the absolute one must be determined through manifestation. In the manifestation of absolute existence, the general image of single existences emerges, which he interprets as “Khams”. These gentlemen are the bearers of God’s manifestation, and according to that, the world of the kingdom is the manifestation of the world of the kingdom; The world of the kingdom is the manifestation of the world of strength; The world of strength is the embodiment of the world of nobles; The world of nobles is the manifestation of the divine names (Vāhediat) and the unity is the manifestation of unity. Thus, man has the ability to be the embodiment and full-view mirror of the existence of truth and manifest his truth in the mirror of the human heart. It is from here that we can enter into the discussion of Islamic calligraphy and its connection with manifestation. Apart from the issue of sanctity of calligraphy in Islamic culture, which on the one hand is based on its connection with the writing of the Qur’an and on the other hand, from some Qur’anic verses, referring to texts such as Adab al-Mashq by Babashah Esfahani, in which he enumerates twelve principles for good calligraphy, the eleventh principle It, i.e. “refinement” clearly has a mystical element and is derived from the eternal quality of the human heart according to the likes of Ibn Arabi, to the extent that it manifests itself in the rusted mirror of the human heart. Therefore, “dignity” with all its mystical meanings in the basic form of the principles of calligraphy and is described as a stage that polishes and refines the heart to manifest or reflect the goodness of God, and the sincerity of the word is to say Sultan Ali Mashhadi: “The dignity of the line is the result of the dignity of the heart”.

 Abstract
During the Safavid period, innovations were created in Stucco decorations. the Koshtehbori Stucco decoration is one of the most attractive and unique architectural decorations of the Safavid period, which was implemented with various motifs in some of the buildings of that period and has a special creativity and innovation that is different from the implementation of other types of Stucco decorations. Knowing the methods and implementation steps of Stucco decorations in restoration projects and studying them is considered as one of the essential elements and an inseparable part of the protection of historical Stucco decorations. The purpose of this research is to identify the similarities and differences, the variety of methods and the stages of implementation of Koshtehbori Stucco decoration with other Stucco decorations in the architecture of the Safavid period. The questions of this research are: What are the similarities and differences of Koshtehbori Stucco decoration with other Stucco decorations in Safavid period architecture in terms of the method and stages of construction and execution? What is the appropriate classification for technical types of Stucco decorations in Safavid architecture? The research method is descriptive-analytical and comparative, and the collection of findings is in the form of library studies and field observations. The results of the studies showed that, unlike other Stucco decorations of the Safavid period, in the execution of the Koshtehbori Stucco decoration, Finishing, polishing, Convex or concavity was not done on the surface of the motifs, and only the background of the design or some carving motifs. In terms of the method, stages and sequence of execution, the Koshtehbori Stucco decoration, is the most similar to the Stucco decoration with carved colored layers. These similarities are in terms of the thickness of each layer of one millimeter and the method of cutting at an angle of 90 degrees to the surface of the motifs and polishing and smoothing the carved parts. Is. Also, in terms of the method, steps and sequence of execution, the Koshtehbori Stucco decoration, is the most different from the carved decoration filled with colored gypsum.
Keywords: Koshtehbori, The Technique of Implementing Stucco Decorations, Classification of Stucco Decorations, Safavid Period Architecture.

Introduction
Stucco decorations in Iran’s architecture have been implemented with different techniques and methods, one of which is the Koshtehbori Stucco decoration. The method and technique of execution of the Koshtehbori Stucco decoration in the Safavid period architecture is different from the Stucco decorations before it and required less time and economic cost per unit area than the relief Stucco decorations of the previous periods. This ornament has a special beauty, it has a variety of colors or different motifs. Previous research by experts in Iranian architecture and art history has focused mostly on Stucco decoration motifs and less on stucco types, comparative analysis of construction methods and techniques. A special classification and understanding of the execution method of Safavid period Stucco decorations can draw more attention to documentation and practical aspects in their basic maintenance and restoration. This research aims to identify the similarities and differences, variety of methods and stages, and execution order of the Koshtehbori Stucco decoration in comparison with other Stucco decorations of the Safavid period, as well as classify the Stucco decorations of this period.
The research questions are: What is the appropriate classification for technical implementation types of Stucco decorations of Safavid period architecture? What are the similarities and differences between the Koshtehbori Stucco decoration and other Stucco decorations of the Safavid period in terms of construction methods and stages? Research method: This research used a descriptive-analytical method to investigate some architectural Stucco decorations in Iran through library studies and field observations. The statistical population of this research includes 6 types of common Stucco decorations in Safavid architecture. The common features and differences between the Koshtehbori decoration and other Stucco decorations of the Safavid period were presented in a descriptive-analytical and adaptive-comparative method in terms of execution methods and stages. For this purpose, common Stucco decorations were examined in terms of the order of executive layers, such as support, scratch coat(arriccio) and fine coat (intonaco) layers, type of background, design drawing and stabilization, plastered layer, and finishing steps. The findings of this research were collected through written and documented sources, as well as field investigations by the authors, including pictures of examples of common Stucco decorations of the Safavid period architecture. In addition to proposing a new classification and naming of some decorations, the research analyzed different types of Stucco decorations by comparing samples to identify similarities and differences between Safavid period Stucco decorations.
 
Discussion
- Presenting a suitable classification of Stucco decoration of Safavid period architecture
This research proposes a new classification system for Stucco decorations in Safavid period architecture based on seven specific criteria. These criteria include the method of shaping, the kind of materials used in the background, the appearance of the surfaces on the motifs, the size and amount of relief, finishing works, in terms of the background and shape of the motifs. Each criterion has a different category, which allows for a more precise identification and recognition of different Stucco decorations. This classification system is crucial for the conservation and restoration of these decorations, as it helps to avoid unprincipled interferences in restoration interventions.
 
- A comparative study of the Stucco decoration of Koshtehbori with other Stucco decorations in Safavid period architecture
In this regard, six different Stucco decorations that were commonly used and innovative during the Safavid period were selected and compared with the Stucco decoration of Koshtehbori in terms of execution method and order. These are:
A: Stucco decoration of Koshtehbori: This decoration, with different techniques and motifs, has been implemented in some buildings of the Safavid period. These decoration are often prepared, designed and implemented with various geometrical, Khataei and Slimy motifs on a background of plaster mortar, which is different from other plaster ornament methods.
B: Stucco decoration with carved colored layers: Among other Stucco decorations in the architecture of the Safavid period, this decoration is the most similar to the Stucco decoration of Koshtehbori.
C: Stucco decoration on Simgel: This decoration is different from the Stucco decoration of Koshtehbori in terms of grouting with mud in the background (empty space between the motifs), the curvature around the motifs, the relief of the motifs, and the shape of the motifs.
D: Stucco decoration on a flat mirror: In this Stucco decoration, flat mirrors are used as a Stucco substrate. In terms of the mirror background between the patterns, the curvature around the patterns, the relief of the patterns, and the shape of the patterns, this Stucco is different from the Stucco decoration of Koshtehbori.
E: Stucco decoration on the Koj mirror (Kopbori): This Stucco decoration is made using the combination of Koj mirror and Stucco parts. This decoration, in an additional stage of initial drawing and transfer of the design, adhesive plaster mortar behind the mirror, in terms of the mirror background of Koj between the motifs, the curvature around the motifs, the relief of the motifs and in the shape of the motifs with the Stucco decoration of Koshtehbori is different.
F: The Naghri Stucco decoration filled with colored gypsum mortar: the Koshtehbori Stucco decoration is the most different from the carved Stucco decoration filled with colored gypsum mortar compared to other Stucco decorations in Safavid period architecture
In the end, the six Stucco decorations of the Safavid period are compared with their sub-groups in the seven classifications in the architecture of the Safavid period. Based on this comparison, we can observe their similarities and differences in the subgroups. For example, the shaping technique of the six types is done in situ, and the type of material used in the background of the Koshtehbori Stucco decoration, the Stucco decoration with carved colored layers, and the Naghri decoration filled with colored plaster is gypsum. However, in the other three decorations with different materials, it is Simgel, flat mirror, and koj mirror.

Conclusion
Through the study and research conducted, a more comprehensive classification and suitable division for Stucco decorations in Iranian architecture has been presented. In this research, Safavid period gypsum decorations are classified based on a specific seven criterion, which includes shaping technique, material used in the background, surface appearance of patterns, size and amount of relief, and complementary works, in terms of both background and pattern shape. Each of these criteria has its own subgroups. 
Stucco decorations in Safavid architecture have similarities and differences in terms of their technical aspects and design. In the execution of the Koshtehbori Stucco decoration, unlike other Safavid Stucco decorations, carving, polishing, convex or concaving on the surface of patterns was not performed, and only the background or some parts of the pattern were carved and polished. In terms of the method, stages and sequence of execution, the Koshtehbori Stucco decoration, is the most similar to the Stucco decoration with carved colored layers. These similarities are in terms of the thickness of each layer of one millimeter and the method of cutting at an angle of 90 degrees to the surface of the motifs and polishing and smoothing the carved parts. Is. Also, in terms of the method, steps and sequence of execution, the Koshtehbori Stucco decoration, is the most different from the carved decoration filled with colored gypsum. Stucco decorations on Simgel, on flat mirrors, on Koj mirrors, in terms of the surface of the motifs, which may be Koj or a combination of Koj and Kav, and also, the type and appearance of the motifs, are different from the Koshtehbori Stucco decoration.

Abstract
Iranian architects often designed structures to serve multiple functions beyond their primary purpose, a practice heavily influenced by Iran’s hot, arid climate and long summers. This multi-functionality is most evident in water-associated architecture, particularly in Isfahan’s historical bridges. Despite extensive research on Isfahan’s architecture, this specific aspect of its bridges has been understudied. This research aims to re-examine the non-transportation functions of four Isfahan bridges: Pol-e Shahrestan/Ji, Pol-e Allah-Verdi Khan/Si-o-se-pol, Pol-e Khaju/Shahi, and Pol-e Jubi/Sa’adat-Abad, highlighting their role in ceremonial and environmental landscape architecture. Main Research Question and Hypothesis: The study investigates how and why ceremonial functions were integrated into these bridges. It hypothesizes that this practice was inspired by Indian Jal Mahals (water palaces), introduced to Iran via extensive political and cultural exchanges during the Safavid era. Research Method: This study employs a historical-descriptive approach, with data gathered through documentary research and analysis of historical sources and travelogues. The findings indicate that while the concept of ceremonial water pavilions (Cheshmeh Emarat in Iran, Jal Mahal in India) pre-existed, its application on bridges was an innovation in Safavid Iran. The bridges served as ceremonial platforms for royal events like the Abrizan (Water Sprinkling Festival), receptions for ambassadors, and public spectacles. Furthermore, they played a crucial role in microclimate moderation by creating reservoirs that increased humidity and helped recharge underground aquifers, addressing critical environmental needs of the capital city.
Keywords: Historical Bridges, Cheshmeh Emarat, Safavid Isfahan, Jal Mahal, Ceremonial Architecture, Landscape Architecture.

Introduction 
This paper explores the multi-functional design of Safavid-era bridges in Isfahan, which extended beyond mere river crossings to incorporate significant ceremonial and environmental roles. This architectural ingenuity was a direct response to Iran’s challenging arid climate and the socio-political ambitions of the Safavid court. The study focuses on how the bridges Pol-e Shahrestan, Allah-Verdi Khan, Khaju, and Jubi were integrated into the urban and royal landscape. While the paradigm of the water pavilion (Cheshmeh Emarat) was known in Persian and Indian (Jal Mahal) architecture, its adaptation onto bridge structures represents a unique Safavid development. This research addresses a gap in the existing literature by systematically analyzing these bridges not just as feats of engineering, but as central elements of ceremonial life and environmental engineering in the capital.

Materials and Methods 
This research is based on a historical-interpretive methodology. Data was collected through meticulous documentary research, including analysis of primary sources like European travelogues (e.g., by Chardin, Tavernier) and Safavid chronicles. Secondary sources encompass modern scholarly works on Safavid architecture and urbanism. Architectural analysis was conducted by examining historical plans, photographs, and existing structures to understand the form and function of the pavilions. The comparative method is used to draw parallels between the Iranian Cheshmeh Emarat and the Indian Jal Mahal tradition, tracing potential routes of cultural and architectural influence during the 17th century.

Data and Findings 
The investigation reveals distinct evolutionary stages:
• Pol-e Shahrestan: An older bridge onto which an octagonal pavilion (Hasht Behesht plan) was added during the Safavid period, representing an architectural annexation rather than an original design.
• Pol-e Allah-Verdi Khan (Si-o-se-pol): Built by Shah Abbas I, its primary function was connectivity. Ceremonial activities were initially held in the vaulted spaces beneath the bridge deck due to structural constraints, serving as a royal loge for the Abrizan festival and receiving dignitaries.
• Pol-e Khaju: Constructed by Shah Abbas II, it represents the pinnacle of this integration. Two central pavilions (Beyglarbeygi), adapting the Hasht Behesht plan to the bridge’s axis, were purpose-built as ceremonial platforms. The bridge could be dammed to create a vast lake for boating, fireworks, and reflections of upstream palaces like Ayeneh-Khaneh.
• Pol-e Jubi: This bridge provided private access to royal gardens. It featured a central pavilion (now destroyed, but documented in European engravings) similar to the one on Pol-e Shahrestan, offering the royal family a secluded vantage point.

Discussion 
The findings confirm the hypothesis that the sophisticated development of bridge-pavilions in Safavid Isfahan was influenced by cultural and political exchanges with the Indian subcontinent, where the Jal Mahal tradition was well-established. The Safavids adeptly synthesized this influence with pre-existing Iranian concepts like the Cheshmeh Emarat and the ancient Abrizan festival. This discussion argues that these structures were not merely aesthetic additions but vital components of urban infrastructure. They served as instruments of royal propaganda, stages for displaying sovereign power to both the public and foreign emissaries. Furthermore, the creation of artificial lakes through damming was a brilliant hydrological strategy. It addressed Isfahan’s environmental needs by significantly moderating the microclimate through evaporative cooling and critically recharging the subterranean aquifers that supplied the city’s water via qanats.

Conclusion
In conclusion, the historical bridges of Safavid Isfahan exemplify a profound integration of multifunctional design. Iranian architects, responding to climatic necessities and royal ambition, masterfully extended the function of these structures from mere utilities to complex ceremonial platforms and environmental regulators. The practice of adding pavilions to older bridges or incorporating them into new designs was a strategic innovation in the landscape architecture of the era. While inspired by the Indian Jal Mahal, the Safavid implementation on bridges was an original contribution. These structures became iconic urban elements, central to the city’s public ceremonies and essential to its ecological balance. They stand as testament to a holistic architectural vision where utility, ceremony, and environmental technology were seamlessly woven together, defining the grandeur of Isfahan as a Safavid capital.

Abstract
It is possible to study the climate adaptability of past and present architecture by benefiting from the sciences of archeology, architecture, geography, applied climatology and paleoclimatology. Conducting such studies in connection with the complex of Persepolis in Marvdasht plain belonging to the Achaemenid period adds new information to the scope of our knowledge of the architecture of the mentioned period. The current research seeks to evaluate three main questions: 1) What were the physical components of the architecture of Persepolis complex in order to adapt it to climatic conditions? 2) How effective were these components in line with the mentioned issue? And 3) What were the non-physical heating or cooling arrangements of the complex? The necessary information has been collected by library and field methods and analyzes of four software, AutoCAD, Climate Consultant, Ecotect, and DesignBuilder in the field of energy and architecture and processed in a descriptive-analytical way. The physical components of the architecture of the complex include its orientation towards the south with a northwest-southeast stretch, high density and height of buildings and the creation of passages with a small width, the use of mud-brick in the construction of walls and the creation of a flat covering of wooden beams, the installation of side doors and windows in the walls. South in most of the buildings are the construction of the pillared porch at the entrance of most of the buildings. These components are effective in using the radiant heat of the sun to heat the residents in some hours in the time range from October to April. However, the application of these solutions from November to March (1632 hours in total) is not enough, and heat production was needed. Probably, in order to achieve thermal comfort, the residents had time management in holding gatherings and used non-physical heating arrangements similar to portable open fire-place from the palaces of the Assyrian Empire. Finally, the climatic adaptability of the complex to the Marvdasht plain and the adoption of suitable heating and cooling measures in it have ensured the thermal comfort of the residents.
Keywords: Environmental Archeology, Persepolis Complex, Thermal Comfort in Achaemenid Architecture, Climatic Adaptability.

Introduction
Creating ecological stability between man-made and nature is necessary for the continuation of life. Architecture is one of the aspects of human life that has a direct relationship with climatic conditions. The formation of native architectural styles throughout history shows the extent of knowledge of the ethnic groups from the climatic conditions of the surrounding environment, which is based on the reading of the geographical, historical and social background of the region (Moazzen & Sad berenji, 1400: 168). When the climatic conditions in a region are favorable, human life is formed and continues there. These conditions are different in different parts of the world and it is necessary to use elements in the architectural body of the building with the aim of complying with the mentioned conditions. Archaeological evidence shows that humans have been aware of this issue since prehistoric times and have taken steps towards the optimal use of natural factors and reducing their negative consequences. The architecture of the residential and religious buildings discovered in Tepe Zagheh (Malek Shahmirzadi, 2011: 326-327) and the architectural works obtained from the V cultural period of the Tepe Sagzabad (Talaei, 2015: 145-145) are proof of such knowledge. By adopting suitable cooling and heating measures in the architectural body of the building, a mental condition is created in the residents that express their satisfaction with the thermal conditions of the environment, and it is called the thermal comfort range (Hejazizadeh & Karbalai Darei, 2014: 22).
Historical documents and archaeological data related to the Achaemenid Empire have been discovered from different parts of their territory, and architectural remains are among these discoveries. The architectural complex uncovered in the vicinity of Persepolis in Marvdasht plain is one of the architectural remains left over from the Achaemenid period. The architecture of this complex is in a way that has certain proportions and the Peymoon system (Javnmardi & et al., 2018: 123). The architectural body of each building must match the climatic conditions of the surrounding environment as much as possible in order to ensure the thermal comfort of its inhabitants. If the physical adaptability of the architecture is not enough, cooling and heating measures are taken to produce cold or heat in the building. The problem of the current research is to know the physical components of the architecture and the heating and cooling solutions thought in the architecture of the Persepolis complex in accordance with the climatic conditions of the Marvdasht plain, which can bring information about the adaptation of the architecture to the climatic conditions in the Achaemenid period.

Identified Traces
The physical components of the Achaemenid architecture of Persepolis, in order to implement these arrangements, include the orientation of the complex in relation to the azimuth of sunlight towards the south with a northwest-southeast extension, which is exposed to an average of the maximum amount of solar radiation energy and its optimal value. Due to the gradual construction of the complex, the high density and height of the buildings has caused the creation of passages and two courtyards with a small width, which has reduced the area of the movement field of unfavorable winds, shading the openings on hot days and causing a lot of failure in the passages. The use of mud-brick in the construction of walls and the creation of a flat covering of wooden beams with a large thickness, which has a high capacity and thermal delay, prevents the loss of heat on cold days and reduces the entry of heat from the outside into the interior of buildings on hot days. Installing openings in the northwest-southeast azimuth is an average of the maximum radiant heat (east) and optimal (east-west with south view) azimuths, and the amount of heat received from sunlight is suitable for hot and cold days of the year. Most likely, the doors and windows are closed on cold days. The construction of pillared porches in most buildings also played a role in adjusting the air inside. Applying these solutions in most of the hours from November to March, which is calculated as a total of 1632 hours, is not enough to ensure the thermal comfort of the residents of the complex, and heat production is needed.

Conclusion
Considering the great and well-studied achievements of the architects and master craftsmen of Persepolis in various architectural, technical and artistic fields, it is expected that they will have significant achievements in the field of adaptation of architecture to the environment and heating and cooling arrangements. Based on the analysis of the climatic conditions of Marvdasht Plain and the thermal comfort of its residents, it is more necessary to comply with the heating measures compared to the cooling measures in the architecture of a building in the mentioned area for climate adaptation and providing the thermal comfort of the residents. Natural heating measures include the use of heat from sunlight, which relieves the cold stress of the residents in some hours in the time range of October to April. The cooling arrangements also include shading on the openings and natural air ventilation, which provides thermal comfort to the residents from April to May and from September to October in some hours and in the middle days of the two mentioned periods at all hours of the day and night. There was no need for cooling during the year. In this collection, wall-mounted heaters similar to the examples of the third floor of Babajan Tepe Lorestan have not been identified. For this reason, it is likely that the inhabitants used portable metal fire-place similar to the Assyrian types and provided the necessary heat. Finally, the present research shows that the architects of Persepolis complex, as well as having mastered various architectural techniques, also had sufficient knowledge in relation to various aspects of climate adaptability and the adoption of heating and cooling measures in order to ensure the thermal comfort of the residents in different months of the year.

Abstract
The Upper Gotvand Dam, with a 90-kilometer-long lake, is one of the largest dams in the country, and its impoundment caused the flooding of a large number of ancient sites, ancient and modern migration routes, villages, and nomadic settlements in the northeastern region of Khuzestan. Before the dam was completed, a team of archaeologists surveyed its basin in 2007. After that, in 2008, a team of archaeologists from ICHTO of Khuzestan Province excavated the Kalantar site and the Kalantar cemetery, and then in April and May 2010, salvage excavations were carried out at Kalantar 4 & 5 sites to obtain as much information as possible, which yielded significant results. Following the excavation of the Kalantar 5 site, traces of residential stone architecture, plain buff and red pottery, and turquoise blue and green glazed pottery, as well as some ground stones such as grinding stones, mortars, and pounding stones, were found. According to typological comparisons on the potteries, it was determined that they belonged to the Middle Islamic period (fifth and sixth centuries AH), and the site was inhabited during the Seljuk period. In addition, it was determined that there is a great similarity between the stone architecture of the Kalantar 4 (a Neo-Elamite site), and the Kalantar 5, and with the local architecture of the region in the present time, both in villages and in nomadic settlements. In other words, the continuity of cultural traditions over several millennia is observed in this area.
Keywords: Kalantar 5, Gotvand Dam Basin, Middle Islamic Period, Stone Architecture, Islamic Glazed Pottery.

Introduction
The Upper Gotvand Dam was built on the Karun River near the small town of Gotvand to generate electricity and irrigate downstream agricultural lands, and a wide range of intermountain valleys, numerous ancient sites, ancient and modern migration routes, villages, and nomadic settlements were submerged in the 90-kilometer-long lake behind the dam. Before the dam was impounded, two teams led by Shahram Zare and Hossein Azizi Kharanghi, respectively, surveyed the area (Azizi Kharanghi et al., 2007). Salvage excavations were conducted by Hamidreza Valipour on two sites, Kalantar 4 and 5, which were found during the surveys in the spring of 2010 (Valipour, 2010a & b). The preliminary results of the excavation of Kalantar 5 will be presented here.
The first goal of the excavation, like all salvage excavations, was to access as much information as possible. Due to the proximity of Kalantar 5 to Kalantar 4 and the similarity of its surface architectural structure with the architecture of Kalantar 4, the excavation team was faced with some questions, the most important of which were: 1- Is Kalantar 5 an extension of the Kalantar 4 settlement and can we consider them as one site? 2- Was the settlement in Kalantar 5 established after the abandonment of Kalantar 4 and as a result of the displacement of its residents? 3- Does Kalantar 5 belong to a different time than Kalantar 4? Of course, given the presence of Islamic pottery on the surface of Kalantar 5, it was assumed that this area, in addition to the Elamite period, would also contain evidence of settlement from this period. 4- Function and type of settlement in Kalantar5.

Kalantar 5
Kalantar 5 is located on a natural hill south of Kalantar village (Ab Zālu Arab) in Lali County, at N: 32˚ 13΄ 42/6˝ latitude and E: 049˚ 04΄ 55/4˝ longitude, 160 meters north of Kalantar 4 and 13 kilometers east of the Gotvand Dam. The highest point of the site is 278 meters above sea level. The Karun River, the closest major water source to the site, flows 4.5 kilometers northeast of the site; a water stream also passes through the valley to the northwest.
During the excavation, one trench was opened at the highest part of the site, measuring 10×10 meters, where the regular stone pieces and traces of walls indicated the existence of architectural spaces in this part of the site. Given the depth of the natural bedrock, it was clear before the excavation began that not much height of the walls remained.

Architecture
A total of six architectural spaces were revealed during the excavation in Trench I. Stone and mud mortar were used in all the architectural structures. The stones used in the construction of the different parts of the complex are soft limestone in small to large sizes. All the stones lack cutting polish but have an almost regular shape. Many of the stones used in the architectural structures are cubed. The walls are rectangular. The walls lack any covering, and even during the excavation in the rubble layers, no samples of mud, plaster, or lime were found. The six aforementioned spaces seem to belong to the same building because they all share walls. It is possible that the natural bedrock of the hill was used as a floor for the spaces. Stone supports were used in addition to all the main and internal load-bearing walls. The entrances were mainly created by not connecting two walls or by cutting off part of the length of a wall. Next to some walls, there are smaller annexed spaces as storage places, which were probably used to store daily necessities or food or fuel, and they lacked any entrance and were accessed from above. A pyrotechnical structure was found inside one of the spaces, about one-fifth of which remains. Since a very small part of it remains, it is difficult to distinguish its function as an oven or else. No evidence of a roof or debris was found during the excavation. Given the relatively small width of the spaces and the absence of columns, the roofs of the spaces were most likely created using parallel wooden poles and covered with mats or tree branches and mud. This reconstruction was carried out in comparison with the current situation in the village adjacent to the site. The reason for this comparison is the great similarity of the architecture obtained from the settlement spaces of the site with the architecture of the adjacent village.

Pottery
The 319 potsherds recovered from the excavation are divided into two major groups: plain and glazed. 265 sherds (83%) of the total are unglazed. Unglazed pottery can be divided into two groups: buff and red. The technology of pottery production is completely similar in terms of form, manufacturing technique, inclusion, firing, and decoration. Most of the sherds are wheel-made (96%). The inner and outer surfaces of the pottery are unpolished, and both sides of the vessels are smoothed by the wet hand method. Rarely, red wash was used to cover a handful of buff wares. The texture of buff ware is much more cohesive than that of red ware. Mineral materials such as fine to coarse sand were used as an inclusion in unglazed pottery; in one of the red potteries, the inclusion is a combination of organic and mineral materials. In general, the quality of buff-colored pottery is better than that of reds, and the number of buff sherds is much greater than that of reds. 236 sherds (74% of all pottery and 89% of unglazed pottery) are buff, and 29 sherds (9% of all pottery and 11% of unglazed pottery) are red. There are 10 sherds of pottery with incised decoration in the unglazed buff group.
54 pieces (17%) of the pottery are glazed. Except for two pieces with green glaze, the rest are turquoise blue. The pottery of this group is in the category of pottery with monochromatic glaze. Five pieces are also of the sgraffiato type with turquoise blue glaze. In terms of form, manufacturing technique, inclusion, firing, and color, these sherds are completely similar to the unglazed buff wares. The inclusion of all samples is mineral.
The reconstructed forms are the jar (44.5%), bowl (37%), and bowl (18.5%), respectively. The sherds date back to the 5th and 6th centuries AH and are dated to the Seljuk period (Karimi & Kiani, 1985; Towhidi, 2000; Kambakhshfard, 2001; Grube, 1994; Treptow, 2007).

Other Cultural Materials
In addition to pottery, other cultural materials recovered included animal remains, pounding stones, stone mortars, pivots, iron nails, iron knife, the bottom, rim, and body of transparent or opaque glass vessels in blue, yellow, and milky colors, as well as a few broken shells.

Conclusion
Kalantar 5 is a rural settlement site from the Middle Islamic period because considering the landscape of the region, the location of the site, the extent of the architectural remains, and the dispersion of cultural materials, it is unlikely that the settlement was urban. There is no connection between the sites of Kalantar 4 and 5 from a cultural and temporal perspective. An interesting point to note is the similarity of the architectural structures of this site with the architecture of Kalantar 4 and the modern village of Ab Zālū Arab and other nomadic villages and settlements in the region. With an ethnoarchaeological approach, this similarity can be considered a kind of cultural continuity in architecture. Perhaps the same environmental and subsistence conditions can be considered the reason for the construction of similar architecture over a long period.
The buildings were constructed using completely local materials, such as stone and mud. All the stones are limestone, ranging in size from small to large, and are uncut and unpolished but have a fairly regular shape, and many of the stones have been broken using chisels and hammers. It seems that the six identified spaces had both roofed and open sections. The three spaces 1, 3, and 4 were associated with activities that required separation from the residential areas; the three spaces 2, 5, and 6, which are part of the main residential complex, were probably places for resting and performing other daily activities. These three spaces are connected by some entrances.
All finds, from functional examples such as pottery, glass vessels, pounding stones, and mortars to decorative shells, indicate a normal settlement, and all of them are related to daily life activities.
The pottery of the Kalantar 5 bears no resemblance to the Kalantar 4 site. Many of them are Islamic glazed pottery, including monochrome green and turquoise blue glazes and some with incised patterns under the turquoise blue glaze. The pottery is not very diverse in terms of color, glaze, type, and theme of the patterns. These potteries date back to the fifth and sixth centuries AH and are dated to the Seljuk period. During this period, the glass industry in Iran was very prosperous (Shishehgar, 2003: 24), and glass fragments recovered from a rural settlement site confirm this.

Abstract
India, with its very cultural and religious diversity, underwent changes and transformations with the domination of the Mamluk government. The minaret as one of the elements of Islamic architecture, apart from playing the role of the minaret, was a symbol of Islamic rule. The minaret is a lasting symbol of the rich history of India, architectural skills and cultural exchange. The purpose of this research is the analysis of decorative elements and re-reading the inscriptions of “Minaret Qutub”, by answering these questions, what effect did the decorative elements of Islamic architecture have on this building? And what are the themes of the inscriptions? The research method of this research is based on library studies, study of first-hand sources, field studies and objective observations of the author and has been done by describing, analyzing and using historical sources. The results of this study show that the minaret is decorated under the influence of aesthetics and elements of Islamic architecture, and the decorative elements of the Qutub minaret are a combination of Islamic and Indian elements. Although the minaret follows the general form of Islamic minarets, it contains elements of Indian architecture such as precise and complex carvings, the use of sand, red stone and marble, the use of lotus flowers and bell-shaped decorations, various inscriptions, geometric and plant motifs that It reflects the combined nature of Indian and Islamic architecture, and the title “Indo-Islamic” architecture can be used for the art of the Mamluk period.
Keywords: Decorative Elements, Inscriptions, Islamic Architecture, Indian Architecture, Mamluk, Qutub Minaret.

Introduction
The Qutub in Delhi is a notable example of Islamic architecture, but it also incorporates elements of Indian design. The use of intricate stone carving techniques, geometric patterns, and calligraphic inscriptions is prominent in this period. This assimilation of diverse influences and the development of a unique artistic style continued to flourish in the following centuries.
In 588 AH, Mu’izzuddin Muhammad Ghori succeeded in capturing the city of Delhi and, while there was no heir to Muhammad Ghori, appointed Qutbuddin Aybak as the successor to the Ghorid government there. He established the Mamluk rule in Delhi and established the first Islamic state called the “Delhi Sultanate”. The Mamluk sultans, who were originally from Central Asia and Iran, brought with them a rich architectural tradition that combined elements of Iranian, Islamic and Indian styles. This fusion led to the development of unique architectural features such as the use of arches, domes, minarets and intricate decorative motifs.
The Qutub Minaret in Delhi is a notable example of Islamic architecture but also incorporates elements of Indian design. The use of intricate stone carving techniques, geometric patterns and calligraphic inscriptions were prominent during this period.
The purpose of this research is to analyze the decorative elements and reinterpret the inscriptions of the “Minaret of Qutub”, in order to answer the questions, what effects did the decorative elements of Islamic architectural art have on this building? And what topics do the themes of the inscriptions express? 
This research seeks to understand the themes of the inscriptions by rereading the inscriptions, the inscriptions of this building have been objectively observed and rewritten, while explaining the concepts of symbols and decorative elements, it aims to clarify the effects of Islamic art on the aforementioned building.
 
Discussion
The Qutub Minar is the tallest brick building in the world with a height of 72.5 meters and a diameter of about 14 at the base and about 3 meters at the highest balcony. The Qutub Minar has five floors and a spiral staircase with 379 steps. The entrance to the minaret is through a door facing north. Between each floor, a circular porch surrounds the building. This porch plays an effective role in maintaining and supporting the weight of the upper floors. Materials such as red and light brown sandstone and gray quartzite were used in the construction of this building, and its two rows are made of white marble.. Indo-Islamic structures often incorporate elements inspired by Hindu and Jain temple architecture. This approach results in a unique combination of forms, motifs and techniques.
Geometric shapes in Islamic architecture often represent the concept of unity, harmony, and precise mathematical proportions and symmetrical arrangements of patterns, the idea of balance and order in the universe, and reflect the belief in the harmonious interaction of various elements in creation.The repetition of geometric shapes with no discernible beginning or end was seen as indicative of the infinite and eternal nature of God.
The Qutub Minaret features intricate carvings, geometric patterns, and ornamental designs that are indicative of the art of its time. Its five floors are separated by carved balconies and fluted columns with Muqarnas decorations. The decorative elements used in Mamluk architecture reflect the sophisticated artistry, aesthetic appeal, and symbolic meanings associated with Islamic art and architecture. They represent a combination of mathematical precision, decorative beauty, and spiritual symbolism. The repetition of geometric shapes without a discernible beginning or end indicated the boundless and eternal nature of God.
Geometric shapes in Islamic architecture often represent the concept of unity, harmony, and precise mathematical proportions and symmetrical arrangements of patterns, the idea of balance and order in the universe, and reflect the belief in the harmonious interaction of various elements in creation.
The inscriptions on the minaret provide valuable historical information about its construction. On each floor, there are two relief inscriptions containing the names of rulers and sultans. The inscriptions on the Qutub Minaret include verses from the Holy Quran, the names and titles of rulers associated with the building, and historical information about its construction.
These inscriptions are skillfully and beautifully executed in calligraphy.
Various styles of Arabic calligraphy such as Kufic, Naskh and Thuluth can be seen on the minaret. 

Conclusion 
The influence of Islamic culture and civilization in the 6th century AH with the establishment of the Delhi Sultanate had a profound impact on the Indian subcontinent. This state, which was the beginning of Muslim rule in India, served as a political and cultural center for the spread of Islamic civilization. The influence of Islamic culture and civilization in India can be seen in various fields, and Islamic architecture in India in particular flourished from the period of the Delhi Sultanates.The architectural elements, decorations, symbols and signs common to Islamic architecture were incorporated into almost all the buildings of the Delhi Sultanate period and later became a common practice in Indian architecture. Several architectural innovations were introduced during the Delhi Sultanate period. These innovations included the construction of minarets, the use of complex stone carving techniques, geometric designs and calligraphic inscriptions, which were prominent during this period.The inscriptions on the building, which are mainly in Arabic, contain verses from the Holy Quran as well as information about the construction of the building. The oldest inscription at the base of the Qutub Minar is attributed to Qutubuddin Aibak, the founder of the Delhi Sultanate. As you ascend the minaret, the text of the inscriptions reflects later additions and renovations made by the rulers of subsequent periods.The inscriptions also display linguistic diversity, with the diversity of Arabic, Persian, Turkish and Hindi languages reflecting the multicultural nature of the Delhi Sultanate. This building is also noteworthy in terms of calligraphy styles and technical techniques of carving and decorative elements and layout, while the symbols and motifs of each one convey a specific meaning to the viewer.Another prominent feature of Indian and Islamic architecture is the use of red sandstone and marble. The use of red sandstone along with decorative elements made of marble creates a significant contrast and adds to the attractiveness of the structures.
The creation and attractiveness of the structures has added to the charm.Indian decorative motifs are often inspired by nature and the local environment. By incorporating these motifs, Indo-Islamic architecture was able to adapt itself to the local context. During the period of the Delhi Sultans, the fusion of Islamic and Indian culture led to Indo-Islamic art, which was characterized by the fusion of Persian, Turkish and Arabic elements with indigenous Indian traditions, resulting in a unique architectural style. The intricate carvings on the minaret, including lotus flower motifs and bell-shaped motifs, indicate a cultural fusion that occurred during the Delhi Sultans and highlighted the inclusive nature of Islamic art.

Abstract
Khuzestan, a primary center of mudbrick and fired-brick architecture in ancient Iran, witnessed the evolution of vaulted construction from the Elamite to the Late Sasanian periods. Among these, arched vaults served not only as structural elements but also as a demonstration of systematic engineering practices tailored to the region’s warm and semi-humid climate. Despite the abundance of surviving monuments, no comprehensive study has analyzed their technical and structural features to uncover the underlying stability principles. This study aims to examine the structural performance and recurring patterns of stability in arched vaults of Khuzestan. Field surveys, documentation of accessible structures, analysis of 111 identified vaulted buildings, and detailed examination of 21 selected representative examples were conducted. The study focused on the interaction of materials, geometric proportions, construction technology, and human craftsmanship in achieving long-term stability. Results indicate that vault stability depended on: 1) the type and geometry of bricks, consistent mortar thickness, and interlocking strategies; 2) diverse construction techniques, including corbeling, radial arrangements, and combination methods; 3) geometric proportions such as span, rise, and vault thickness; 4) adaptation to climatic conditions; and 5) the skill and experience of the builders. This research highlights the presence of a systematic engineering logic in pre-Islamic vault construction and provides a framework for restoration, conservation, and potential adaptation in contemporary architectural practice. The findings demonstrate that these vaults were not merely empirical or accidental in design but reflect deliberate, replicable, and coherent structural strategies.
Keywords: Structural Stability, Vaulted Architecture, Arched Vaults, Pre-Islamic Iran, Khuzestan.

Introduction
Khuzestan has historically played a pivotal role in the development of vaulted architecture within ancient Iranian civilizations. Vaults represent one of the most sophisticated elements of traditional construction, combining technical mastery, material understanding, and adaptation to environmental conditions. From the Elamite through Late Sasanian periods, vaulted buildings in Khuzestan reveal an evolution in construction techniques, reflecting the accumulation of knowledge and local innovation. Arched vaults, in particular, served as primary structural and functional components in ritual, funerary, administrative, and sometimes military architecture.
The study of these vaults provides insight into the strategies employed by ancient builders to achieve stability over centuries. Stability in traditional architecture encompasses not only physical durability but also cultural, climatic, and technical resilience. Builders utilized local materials, precise geometric proportions, and structured load distribution to respond to environmental and functional challenges. Despite extensive archaeological documentation, there has been limited focus on the technical principles underpinning vault stability, particularly in arched vaults.
This research addresses this gap by systematically analyzing recurring structural features, material properties, construction technology, and geometric patterns that contributed to vault durability. The study examines both historical continuity and the adaptation of techniques over time, demonstrating that pre-Islamic vaulting practices in Khuzestan were informed by deliberate engineering logic rather than trial-and-error. Understanding these principles is critical for bridging knowledge gaps in architectural conservation, informing restoration efforts, and inspiring contemporary applications of traditional construction methods.

Discussion 
Analysis of arched vaults in Khuzestan indicates that their long-term stability resulted from a combination of material selection, construction technology, geometric design, and human skill. Key aspects include:
Materials and Mortar: Builders employed trapezoidal, square, and rectangular bricks, wider and thicker at structural bases to distribute loads effectively. Mortars, including clay, gypsum, and bitumen, were chosen according to moisture conditions, ensuring cohesion and stability.
Construction Techniques: Techniques included inclined corbeling, radial arrangements, and hybrid approaches. Temporary wooden or reed supports facilitated precise execution, while multi-layer vaults with controlled thickness enhanced overall strength. Adjacent vaults were often coordinated to reduce lateral stresses.
Geometric Proportions: Ratios between span, rise, and thickness were carefully maintained across periods. Numerical proportional systems guided vault dimensions, while precise interlocking of bricks ensured efficient load transfer.
Human Skill: Mastery in aligning bricks, controlling mortar thickness, integrating vaults with walls, and designing stress-relief features such as recesses and buttresses reflected high craftsmanship.
The historical evolution from Elamite to Sasanian periods shows gradual refinement. Early Elamite vaults utilized simple rectangular cross-sections and limited brick types, while Late Sasanian vaults displayed sophisticated high-rise arches, modular brick use, and multi-layer arrangements. These developments indicate a cumulative knowledge system that informed construction practices and responded to functional and climatic challenges.
The study highlights that stability was never accidental; rather, it emerged from repeated, rationalized engineering practices. Such findings provide an empirical basis for restoration and reconstruction, enabling the preservation of architectural integrity and informing contemporary design strategies that draw upon historical methods.

Conclusion 
This research demonstrates that arched vaults in Khuzestan were underpinned by systematic engineering principles rather than empirical trial-and-error. Stability resulted from the integrated interaction of materials, construction technology, geometric design, environmental adaptation, and craftsmanship. The study identifies: 
- Strategic use of brick types and mortar selection to optimize structural cohesion.
- Refined construction techniques, including corbeling, radial arrangements, multi-layer vaulting, and controlled thickness.
- Geometric proportionality ensuring balanced distribution of forces.
- Adaptation to climate and environmental constraints.
- High-level craftsmanship in aligning elements and controlling structural behavior.
Historical analysis reveals a continuous technological development, culminating in Late Sasanian vaults that exemplify peak structural refinement. Documenting these features provides a foundation for preservation, restoration, and potential adaptation in modern architectural practice. Future studies may compare these vaults with contemporary structures in neighboring regions or explore the influence on early Islamic architecture in southwestern Iran.
The study confirms that pre-Islamic vault construction in Khuzestan represents a coherent, replicable, and sophisticated engineering tradition, offering valuable lessons for both conservation and contemporary design.