Social trust is the basic capital of each media and every messenger. In its absence, every thing goes waste and they can not have real presence. The efficiency rate of each media is evaluated by the difference between nominal and real audiences and the increase of this difference means a defect in one of the pillars messaging, such as message producers, inner essence of the message, message grab (expressive style), situation analysis, mind analysis, transferor analysis, technical and cultural effectiveness of media and etc. . However the most important item is the media trust level. Nowadays, rather than just the quantity, the quality of media is in the spotlight and among the quality elements, the social trust is the most important.Soft war is a kind of war among media trust. Those who have this basic capital, are more successful across the world.The research method is documentary. According to research data, media trust consists of several main characteristics:* sensitiveness: means the subjectivity and vulnerability of this elegant phenomenon. So it can be quickly eliminated.* irreversibility: if, for any reason, such as stigma or labeling, the media lost its initial trust, it would be, though not impossible, but so difficult to modify. Some emphasis on partial or even conditional reversibility.* Competitiveness: In the situation of information overload (both in producing and transmitting), trust absorption has become a sensitive issue. So the social trust is not mentioned as an abstract theme, but is definable in competitive environment.

This is a study on the concept of social trust, a concept that has recently been enjoying an increasing vogue, yet it is not explored enough as far as women’s issues are concerned. Most sociological theorists attribute importance to the role of interactions and relations in establishing trust, and believe that alongside these factors trust finds its true meaning, and can be developed and reinforced.  Discussing women’s social trust, limitations on their social relations cannot be ignored. The Iranian patriarchal culture intertwined with prejudiced values, views women as representing dignity and honor of the family and men’s reputation. Therefore, through imposing several restrictions, men try to control women’s behavior as being in line with men’s mindset. Thus, such a system restricts women’s social relationships and prevents their presence in different social circles.In this research we study the role and impact of various factors, such as level and types of women's relations, fundamental trust and powerlessness feeling in respect to the social trust. We have conducted a survey with a statistical sample of 290 married women who lived in districts 3 and 16 of Tehran.  Results indicate a significant correlation between level and types of women's relations, fundamental trust, and powerlessness feeling with women’s social trust.

Participation, membership and co-operation in the NGO's and in collective activities is influenced by several factors. This research is about the impact of social trust on the organized participation of people. For this purpose, different theories in the field of social participation and social trust were studied, and theoretical problem of the research hypothesis, extracted from the theoretical view points of social trust and social participation were tested by the data gathered through survey method. Geographical area of the research is metropolis of Tehran and statistical research population are inhabitants of Tehran municipality regions: one (up), seven (middle), and seventeen (low) regarding to SES. Sample size is about 300, which are selected randomly by cluster sampling method. The required information gathered by questionnaire, tool. The results indicates that there are significant relationship between the three different forms of social trust (including individual, generalized and institutional trust) and organized social participation; although the coefficient of multi variables regression indicates that generalized social trust and social-economic status, among all of the studied variables, are the best predicators for social participation.

Introduction Relevant programs of leisure time and tourism are considered as important economical, social and cultural phenomena. Nowadays tourism has been recognized as a cultural and economical activity in various communities. Some theorists believe that tourism is as a motive force for countries economic development. Regarding the importance of tourism, the major purpose of this research is to determine trust's position of foreign tourists to Iranians in development of tourism. In this research, the willingness of foreigner tourists to travell to Iran again? Is the objective index for measurement of tourism' s development.In order to achieve research's purposes, documentary methods including studying of background and theoretical principles of research and survey methods were used. Total population of the research subject, consist of foreigner tourists from five world's continents that have traveled to Iran with economic, social, political, scientific cultural, and recreational goals, 384 tourists were selected as sample size on the basis of choc ran formula...