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Viability is one of the approaches that seeks to create a safe and healthy environment for human societies. Today, cities face many challenges in the economic, social and environmental fields. At the same time, population growth, along with the growing proportion of urbanization, has had detrimental consequences for cities. Continuation of such urban growth with social, economic, and environmental problems is critical and warns of urban instability. Meanwhile, other problems drastically reduce the quality of life and, consequently, livability in cities. Therefore, the necessity and importance of the discussion of viability and sustainable development in cities today is quite obvious. The purpose of this study is to evaluate the viability of neighborhoods in Yasuj with emphasis on sustainable development. The research method is descriptive-analytical with an applied purpose. The data required for analysis were collected through a questionnaire and then analyzed using SPSS, ArcMap, Excel software and Shannon entropy model and TOPSIS. The results of calculations and evaluation show that not all neighborhoods of Yasuj have the same viability. The neighborhoods under Juma Bazaar have the highest level of viability and Eram neighborhood has the lowest level of viability.

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Considering the importance of humans and their interactions with urban spaces, today, there is a human-oriented approach to urban management and the same has led to the creation of many urban spaces. Sidewalks, as one of the most active and youthful aspects of the urban space, are a suitable platform for the presence of pedestrians. As such, this research aims to analyze and classify the existing sidewalks of the sixth and eighth districts of the city of Shiraz based on their physical components (natural and man-made elements), activities and events (recreational, social, religious, everyday activities, etc.) and semantic components (identity and sense of belonging, association).
After completing the questionnaires by the sample population, the Kolmograph Smirnov (K_S) statistical technique was used to extract inferential statistics, , and then the acquired data were analyzed in the SPSS software, due to the parametric nature of the data from the One Sample T-Test and the average comparison. The research findings showed that the sidewalks of District 6 (Ostad Shajarian, Kesai, Behesht) have permanent use in terms of spending leisure time and are main space in terms of social interactions, entertainment and sports whereas; the sidewalks of District 8 (Ahmadi, Zandiyeh, around the Karimkhani Citadel) are permanent in terms of economic-social and cultural-religious activities, and in terms of their main function, they include the dominant economic and social elements. With this description, it is necessary to organize and develop these sidewalks according to the users’ motives and relative advantages that would subsequently uplift the satisfaction with respect to this type of urban spaces.