---

This research suggests a methodological improvement to study social capital in online social networks. We have designed a measurement tool based on Lin's theory of social resources. It is named Social Village and can be accessed in (http://socialvillage.me). By this tool, we are getting access to profile and friendship data of users of online social networks (Facebook and Google Plus). To access this data, we ask for users’ permission by social login and we have designed a gamified and interesting social survey that helps users get an in-depth knowledge of their online life. This tool combines three structural generators for social capital data (name, position and resource generators) and it has been developed in three languages (English, French and Persian) enabling us to conduct comparative studies. Based on our results presented in this report, 412 users in sample of our study know who they are connected with in online social networks, they know their friends’ socio-economic positions and they are providing or receiving various resources through their online friendships and their level of social capital is signifacntly correlated with their activities in online social networks and some other variables that are discussed in the report.

---

With the development of human societies and the promotion of human social needs for a better life and also restriction of residential space for doing some of them, necessity to participate in  Communal spaces For doing some human activities is utmost important. Cultural centers provide fertile ground for developing social sustainability, because of having informal spaces and programs along with other functions. The aim of this paper is Understanding social sustainability indicators in contemporary cultural centers and presenting analysis Models of this indicators. The studied population in this study is Cultural centers of Tehran that 5 of them were selected in targeted sampling form. The Research Methodology that used in this study is based on practical purpose and have Descriptive - Analysis nature. Information collected in the two documents as well as library studies and field observations have been made.and also for evaluating and prioritizing presented indicators in analytical model, Network analysis (ANP) was used. Results revealed that among the main criteria obtained from investigation, “The mental environmental component” And "objective environmental components" have most importance in achieving social sustainability in cultural centers.

---

Core discussion network (CDN) is one of the most important elements of any society which has experienced important developments and changes. This study aimed to describe and analysis younger adult and older adult’s CDN, and investigating changes in their CDN. This study was conducted by survey method and the study sample was 600 young people aged 15-29 and adults aged 40-65 in Shiraz who were selected using multi-stage random sampling method. Core discussion network was completed using a social network assessment questionnaire between two generations, younger adults and older adults. The important descriptive results of this study show that the size of CDN, network density, frequency of interactions and closeness of the older adult’s network are greater than younger adults. In contrast, ethnic heterogeneity and social support received from network are also greater for young people. The inferential results show that although the test of the difference between structural, interactive and functional dimensions of the younger adults and older adult’s CDN is not significant, but the differences of some of the indexes of each of them are significant. In general, it seems that the CDN of people in Shiraz is changing towards network individualism.