Objective: In the new social welfare, issues of social capital have been important and are very necessary because today not only social welfare can not simply available and can not be guaranteed by direct economic and material components, but in addition the resources of social society including social capital of different groups of people must be mobilized. Several experimental findings are emphasized on the importance of social capital at promoting level of development and welfare of communities. Studies show that the areas or countries with the relatively high storage of social capital (according to generalized trust and civil commitment) obtain higher levels of growth compared with the societies with lower trust and low civil commitment. In this study , the collective social capital approach in which social capital is defined as collective assets that leads to the effects and the consequences through orientation to collective (Putnam theory) due to it’s authenticity to the subject of research, approved as the theoretical framework in relation of explanation and analysis of social welfare situation. In this research social capital , as Putnam defined , is studied as a collective asset. Therefore, conceptual elements of social capital considered as a set of cognitive and subjective dimensions which formed social trust and social norms in the behavior in social network which totally formed the social capital components. The average scores of these three components has been considered as social capital scores. Also in relation of social welfare, the combination of individual’s social welfare (Bentham theory) that their indicators proposed by social statistics center of Euroup, approved for measurement in this research. The general hypothesis is that: social capital has a positive impact on social welfare any higher amount of social capital leads to higher amount of social welfare. In addition to the general hypothesis , some other hypothesis as especial forms of relationships between variables such as individual trust, generalized trust, institutionalized trust, social solidarity, cooperation, social support, formal participation, informal participation, amount and variety of relationships are measured. Method: The methodology of this research is survey and questionnaire is used for data gathering . Statistical community of research are all households residing in Tehran and statistical unit of the research is the head of family. Sample size are 299 cases that selected by cluster sampling. Findings & Results: The results of research as generally indicate the approval of hypothesis and research expectations about the role of social capital in increasing of social welfare. As results of the statistical analysis show the social capital has positive impact on social welfare that is , any higher amount which social capital may be, the rate of social welfare will be higher. Also all the indices considered for social capital(such as trust, social norms, and social networks) have a positive impact on social welfare these results are consistent with Putnam theories. The research shows that some indicators of social capital which have better situation in research community have a more relationship with traditional aspects of society such as religious informal participation and charity affairs and some indicators that are consistent with modern life such as modern social capital (institutional trust, generalized trust, solidarity and formal participation) are not in a desirable situation.

Introduction: This study tries to find the association between “trust, social networks and Knowledge (as indicators of social capital)” and “Social Welfare” in Tehran. The questions of this study include: “What are the main Factors of social capital and social welfare in Tehran? Which of the eighteen indicators of social capital are effective on social welfare?

Method: Statistical population of this study includes people over 16 years in Tehran. 783 people from this city were selected randomly and data was collected by using questionnaire.

Findings: Among the 18 indicators of social capital in factor analysis, six factors “Social Communication, Solidarity and Social Integration, Informal charity, Religious and Reciprocal Participation, Attention to public affairs, Formal participation, Network of Friends, Colleagues and Kinships, Public, Individual and Institutional Trust, looking to the future and Security are effective in determine of social capital.

Discussion: The results show a significant relationship between social capital indicators and social welfare in Tehran. The major factors of social capital that increases social welfare (both Subjective and Objective) are: Security, Formal participation, Individual and Institutional Trust, Attention to public affairs, Network Kinships.

  Introduction: Nowadays in order to achieve sustainable development, social capital is essential as well as human capital. Because social capital can cause maximum use of different resources. This paper aimed at studying social capital in Zanjan province.

  Method: Based on exploratory, analytic-descriptive method. In order to studying social capital in this area some affiliate indexes have been applied through quantitative and qualitative methods. The population of interest in this research is the people of Zanjan province. The stratified random sampling has been used to ensure that estimates had been made with equal accuracy in different counties of the province and at least 1250 samples had been selected based on population of each county. Essential data and information has been collected through documentary and survey methods including questionnaire and interview.

  Findings: findings have shown the membership analysis in social networks emphasize on the noticeable role of informal relationship networks in social capital forming in this province. It indicates that only half of population of interest in this study, both in urban and rural settlements, has experienced group work. Accomplishing required tasks, making religious ceremonies and charities have developed the social relations of people more than other factors in this region.

  Discussion : According to the findings of this study major supporters of people in this community were first family members and then friends which indicate that there is no great expectation between individuals that others will in-turn support them. People of this area could achieve a balanced compound of moral and material social norms. Trust in others which affects people's willingness to participate in social and economic activities is limited in this area which informs that social capital in this community had less opportunity to develop.