Saving in fossil energy use is one of important issues in the world. Buildings are one of the most important energy consumers and can reduce their energy use. Today, utilizing photovoltaic (PV) technology that converts solar power into electricity is one of the most useful methods of GHG reduction. PV can also be utilized in buildings and plays an important role to reduce the fossil energy use. PV utilization in architecture deals with many parameters and one of the most important of them is integrating PV with building envelope. The importance of this integration is in consistency between output of PV system, PV feature, and whole the building and the aspect of PV. PV integration on buildings will lead to a sustainable architecture if the design method is sustainable too. Otherwise, the building may have many conflicts in function and aesthetics. This paper will evaluate the situation of BiPVs in Iran and the world to analyze a design method based on sustainable design. The method will have six parts include design team, energy strategy, holistic design, building economics, building feature and multi functional PV system.

The present paper will investigate the future sustainable structure of rural areas, by having special consideration for ecology and energy problem, and by vernacular urban design methods. This research will assess the essence of experimental elements by the inhabitant, and recent scientific findings. The main concentration will be on the physical design of rural area in hot arid and sunny regions, in order to have active and healthy environment, and to concentrate on the sustainability of future rural generations.

The fast growth of urbanization in Iran has led to the emergence of new values in rural areas of the country; which subsequently has resulted in formation of new demands in these rural societies.The post war and post natural disaster reconstructions of the rural areas in the country have revealed that in most of the cases the academic knowledge is incongruent with the social, economical and cultural rural context. But unfortunately, these precocious experiences has never concluded in a framework that could make our design and planning more effective.On the other hand, the successful experiences of rehabilitation and renovation in the rural areas have proved that the effective rural design and planning can be reached only through interaction with inhabitants.In other words, the active presence of the rural inhabitants in the process of decision making, planning, designing and implementing is imperative. It is vital to consider that participation is the most crucial factor in rehabilitation and renovation of rural areas. The other key factors are utilization of vernacular knowledge and materials. In addition, training the rural inhabitants how to use their vernacular knowledge in a scientific way is our most important task as professionals.

Desert - fringe cities constitute a considerable number of the Iranian Settlements. These same cities have been facing drastic physical alterations, cavsed by the practice of the Modern Architecture and Urban Design teachings over the last three decades. The modern interventions, such as the implementation of «the Street - Widening Projects» and «City Master Plans», have led into several unwanted consequences at both architectural and urban design scales. Some of the consequences include: the predominance of construction of buildings with little respect for the climatic condition of desert areas, and damaging natural resources, such as conversion of quality agricultural lands into urban built-up area to meet the requirements of the low-density-urban-sprawl paradigm currently prevailing in these cities.This article aims to review the theoretical underpinnings of the concept of «Sustainable Urban Design» and subsequently, to critically examine the practice of Modern Urban Design with in desert communities from an environmentally sustainable point of view. The paper suggests that through application of the principles of Sustainable Urban Design, and through learning lessons from the traditional architectural heritage of the communities involved, one can guide the physical environments of the cities towards a more harmonious relationship with their natural settings. In so doing, application of the principles ruling the «Iranian compact city» model is advised, and the adaptation of urban regeneration policies are underlined.

Environmental education and evaluation is one of the most important tools to preserve the human built and natural environment. This article presents an ecological pattern in sustainable settlement education with emphasis on the university campus landscape and architecture design. As the main assumption, the university architecture and campus landscape can influence the students' perception and behavior in relation to sustainable development. The educational built environment of the university campus-as a behavior setting- has an affordance to convey the sustainability concepts to the students. The paper reviews some case studies in Europe and attempts to introduce sustainable development education with university architecture and campus design in Iran. The article has resulted a conceptual pattern with some environmental design strategies in both architecture and landscape design disciplines. Green buildings design, campus landscape design with bioclimatic approach, design for public transport, cycling and walking and creating green and quality public open spaces with community buildings are of the main strategies in university campus design.

A B S T R A C T Sustainability in horticulture products depends on economic, social and environmental factors. Knowing these factors' sustainability levels can be effective in formulating sustainable horticulture development strategies and their effect on the sustainable livelihood of the user family. Therefore, this research aims to analyze the sustainability of horticulture products and their role in the livelihood of the beneficiary households in the villages of the central part of Bandar Gaz city. The required information was collected through a researcher-made questionnaire, the validity of which was obtained based on the opinion of relevant experts and the reliability of which was obtained by calculating Cronbach's alpha coefficient of 0.89. The statistical population of this research includes garden operators in three villages of Eastern Gaz, Western Gaz and Val Afra, which was calculated using Cochran's formula as a sample size of 250. A random sampling method was used to select research samples. To measure the sustainability of garden products, 45 indicators were used, separated by economic, social, and environmental dimensions, and 53 indicators were used, separated by economic, social, human, and environmental dimensions, to measure the sustainable livelihood of the beneficiary household. According to the Spearman test, horticulture products' economic, social and environmental sustainability is effective in the sustainable livelihood of the user family. The Kruskal-Wallis test results indicate that the beneficiaries' sustainable livelihoods in the three studied villages have a significant difference up to the 99% confidence level. The results of the one-way independent variance analysis test on the cultivated area of three villages and horticulture income in three villages also stated a significant difference in these three factors up to the 99% level. Extended Abstract Introduction The most critical challenge in the world today is food security and providing essential human needs. The lack of balance between population growth and agricultural production has made developing countries face a serious challenge. Sustainable agriculture is an approach that meets human needs without harming the environment and uses natural resources better. Sustainable horticulture is a type of agriculture that is in the direction of human benefits, is more efficient in the use of resources, and is in balance with the environment. Horticulture activity in the category of sustainable agricultural development, considering its nature and the positive aspects that govern this activity, in case of proper management, is superior in terms of not disrupting the ecological balance or at least due to little damage compared to agriculture. In fact, the benefits that can be listed for horticultural activities in order to achieve sustainable agricultural development compared to agriculture are food supply and welfare facilities, storage and meeting the needs of other plants, growing crops under the shelter of trees, soil protection and green cover, air conditioning and increase of atmospheric precipitation, less consumption of chemical fertilizers and preservation of plant genetic resources. A sustainable livelihood strategy is one of the new strategies that can help the villagers' problems. The sustainable livelihood approach was proposed in the 1980s as a new approach to rural development to reduce and eradicate rural poverty. Livelihood is sustainable when it can withstand unexpected pressures and damages and restore itself and improve its capabilities and capital in the future without harming natural resources. The main problem of the research is, what is the state of sustainability of the garden products system in the central villages of Bandar Gaz city? We are also trying to find out what effect the sustainability of garden products can have on the sustainable livelihood of rural households. Bandar Gaz is one of the Golestan province's cities, located in the southeastern part of Gorgan. In terms of longitude and latitude, it is located between 53 degrees and 51 minutes to 54 degrees and 3 minutes of east longitude and 36 degrees and 39 minutes to 36 degrees and 49 minutes of north latitude. Bandar Gaz has a population of 20,742 people in 6,715 households, according to 2016.   Methodology This research is of applied type and descriptive-analytical and survey method, carried out in the 2018-2019 crop year. The main tools for data collection were questionnaires, observations and interviews. The statistical population of the research consists of 715 users of horticultural products. A random sampling method was exerted to select the samples, and 250 samples were selected based on Cochran's formula.   Results and discussion The Kruskal-Wallis test was exerted to investigate and compare the household's sustainable livelihood level using gardens in the studied villages so that the results show a significant difference of 99%, 95% and 90% in the variables. The results show that the level of sustainable livelihood is different in the three villages, so based on the results, the level of sustainability of horticultural products is also different in these three villages.   Conclusion The efficiency of horticultural work for support and investment in the village of East Gaz is more than the other two villages. The ability to buy housing, the amount of meeting health needs, the amount of willingness to migrate, and the amount of unemployed and employed people are more in West Gaz village. However, regarding the village's up-to-date architecture and the village houses' strength, there is a more favorable situation in the village of Eastern Gaz. The results of one-way analysis of variance ANOVA indicate a significant difference between the garden income of three villages among the examined components up to the 99% level.   Funding There is no funding support.   Authors’ Contribution The authors contributed equally to the conceptualization and writing of the article. All of the authors approthe contenttent of the manuscript and agreed on all aspects of the work declaration of competing interest none.   Conflict of Interest The authors declared no conflict of interest.   Acknowledgments  We are grateful to all the scientific consultants of this paper.

A B S T R A C TToday, all officials involved with the challenges of city sustainability have accepted the idea of a smarter city, using more technologies, creating better living conditions and protecting the environment for a better quality of life. The central part of the metropolis of Tabriz is based on Region 8 and part of Region 10, a historical-cultural area with an area of 286 hectares and a population of about 40 thousand people in 8 neighbourhoods. This research was compiled to evaluate and explain the regeneration of the central part of Tabriz city with the approach of smart growth and in line with the sustainable development of problematic neighbourhoods in the 8th district of Tabriz metropolis. The present review is methodologically practical, to describe and analyze the goals of regeneration based on library studies. The statistical population of the research includes experts and people living in the central context. In the first part, the Delphi method was used by asking experts. In the second part, the structural equation method of SPSS and AMOS software is used. According to the results of using the scales of design, pedestrian-oriented, intergenerational justice in the actual situation and 3 indicators of management and productivity, stable and value-creating jobs are in the potential situation. Also, two environmental indicators with the most direct and indirect effects and a cultural index have been decisive in the regeneration with the smart growth approach in the central part of Tabriz city. Therefore, in the regeneration of the central part, the studied indicators should be used simultaneously and integrated into the reconstruction projects of the central fabric of the city to lead to smart sustainabilityExtended AbstractIntroductionSmart growth is considered a lever for revitalizing neighborhoods and urban centers. In a general scenario of smart growth, knowing the time and resources of investment provides a new and sustainable life in the city center and worn-out and old textures. Moreover, finally, it will improve the quality of urban neighborhoods, especially worn-out ones, and revive them. Tabriz metropolis, one of the most important and largest cities in the country, with a long history of settlement, especially the central and old texture, due to developments in information and communication technology, extensive environmental, social, and economic changes in terms of time requirements, the traditional texture of roads, Deterioration of residential units, lack of equipment, infrastructure and urban services and environmental problems have caused the failure and physically turned into inefficient and problematic textures. Urban planning and development science must adopt a new decision and approach to face the existing and complex issues of worn-out texture. The main problem of the research is to evaluate and explain the regeneration of the central texture and strengthen them in line with the sustainable development of the problematic neighborhoods of Tabriz metropolis according to the solutions and principles of smart urban growth. Therefore, the main goal of this research is to answer the following question:- What are the effective indicators and components in the regeneration of the central texture of Tabriz metropolis with a smart growth approach? MethodologyThis research is applied and fundamental in terms of purpose and descriptive-analytical. The collection methods are based on documentary and library studies, surveys, and interviews. In the first part, qualitative data was prepared with an open questionnaire and through interviews, as well as the review of documents and quantitative data used in this research numerically and through the weighting of Delphi questionnaires based on the consensus index model to determine importance, certainty, and priority. The panel members were 19 people (including 5 university faculty members, 7 field research experts, 4 executive experts, and 3 graduate students) selected based on the non-probability (targeted) method. In the second part, Cronbach's alpha method was exerted to measure the reliability of the questions, which was obtained as 0.89. In order to evaluate the validity of the questionnaire, the Lawshe method was exploited. The statistical population of the second part includes District 8 of Tabriz, which is the central texture of the city and is equal to 34,231 people. According to Cochran's formula, the sample size was equal to 379 people. Results and discussionIn the next step, path analysis was performed using AMOS 23 software to compare the integrated model with the hypotheses. The results of the path analysis, while verifying the structures, show that the value of the index of the critical ratio to the degree of freedom (CMIN/DF) is equal to 4.01, which is an optimal value for the model fit. Also, the goodness of fit index (GFI) is 0.952, which indicates the acceptability of this amount for the optimal fit of the model. The value of the root means the square error of estimation (RMSEA) is 0.065, which is acceptable because it is smaller than 0.08 and indicates the confirmation of the research model. Also, the Tucker-Lewis index (TLI) is 0.917, the comparative fit index (CFI) is 0.92, and the normalized parsimonious fit index (PNFI) is 0.882, which all indicate that the fit and verification of the research model are desirable.Therefore, none of the objects are removed and remain in the model. Therefore, it is confirmed that the factor structure of regeneration indicators with the smart growth approach has reliability and construct validity. Also, the second-order factor analysis shows that the factor loadings of all regeneration indicators with the smart growth approach are greater than 0.4 and are significant at the 95% probability level. According to the results, the environmental dimension with a factor loading of 0.94 has the most significant effect on urban regeneration with the smart growth approach in the central texture of Tabriz city. After that, quality of life with a factor loading of 0.92, social dimension with a factor loading of 0.88, economic dimension with a factor loading of 0.83, physical dimension with a factor loading of 0.81, transportation dimension with a factor loading of 0.74 and cultural dimension in order with a factor loading of 0.72, are in the following ranks.According to the final structural model results, the environmental index has the highest value, with a direct effect of 0.594 and an indirect effect of 0.275. Moreover, after that, respectively, the quality of life index with a direct effect of 0.513 and an indirect effect of 0.236, a social index with a direct effect of 0.476 and an indirect effect of 0.217, an economic index with a direct effect of 0.451 and an indirect effect of 0.222, Physical with the direct effect of 0.435 and indirect effect of 0.205, mobility index with the direct effect of 0.373 and indirect effect of 0.182 and cultural index with the effect of direct values of 0.295 and indirect effect of 0.153 are influential in regeneration with smart growth approach in the central part of Tabriz city. ConclusionIn this research, seven main indicators related to the subject were investigated. The results showed that the environmental index with the most significant direct and indirect effect is the focus of the evaluation. After that, dimensions and indicators of quality of life, social index, economic index, physical index, mobility index, and cultural index have been influential. According to the results, the urban environment index was analyzed as the most important factor at a high level, and this means that for urban regeneration with a smart growth approach, improving the environmental and physical conditions in the worn-out and central texture of Tabriz city in the current situation is a priority. It is first. This is the most well-known part of regeneration with a smart growth approach. The analysis results show that this is not the case only in the case of transportation infrastructure. However, more comprehensive urban infrastructure such as the urban landscape, open spaces, green and parks, etc. are also crucial in improving the physical conditions of the infrastructure. Also, this study's results show that the economic sector's importance is as important as improving the physical conditions of the infrastructure. In addition, in the worn-out texture of District 8 of Tabriz city, the sociocultural sector is essential, and the revival of historical and cultural resources is considered one of the urban regeneration options. Funding There is no funding support. Authors’ Contribution All of the authors approved the content of the manuscript and agreed on all aspects of the work.  Conflict of Interest Authors declared no conflict of interest. AcknowledgmentsWe are grateful to all the scientific.