Interval data envelopment analysis (interval DEA) deals with the problem of efficiency assessment when inputs and/or outputs decision making units (DMUs) are given as interval data. This paper focuses on ranking DMUs First, we define extreme efficient units, super score, best and worst (inefficiency) frontiers in DEA context. Then, propose a novel method based lower upper scores unit under eval...

This research is on social –capital and the sense of social security among the women in northern and southern Tehran. It tries to explain the social capital and the sense of social security in the given society. This research is done on a survey method with interview and questionnaire. The reliability and the validity of the research method was applied through Alpha Coronbach coefficient.  Th...

security has two dimensions of subjective (security feeling) and objective. there are preconditions for security feeling in society that one of the preconditions, the existence of security in the society. these levels are linked together and the interaction between these two levels of objective and subjective that security in the society is achieved.therefore, in this article we have tried to e...

Background: Homelessness, as a common phenomenon in all human societies, has many social, psychological, and physical consequences for the homeless and society as a whole. This study aimed to determine the role of psychological and social security in predicting depression among women living in homeless shelters of Tehran. Methods: It was a descriptive correlational study. The research populati...

This paper tries to analyze the relationship between social capital(separating this capital to there areas, within group, out group and communicational) to the feeling of security. Through mixed cluster and classified sampling 22 restricts of Tehran and more than 2000 people were chosen totally. The results show that there is a significant relationship between the place of living, marriage, occ...

BACKGROUND The consumption of low quality foods is common in low socioeconomic areas; and according to epidemiological studies, the density of nutrients often proves the quality of diet. This study aimed to compare the density of macronutrients and micronutrients in various parts of Tehran. METHODS This was a cross-sectional study performed from September to December 2007 in all the 22 distri...

. Perceived organizational support has been raised as work backbone of employee in the organization and the psychological contracts are also a set of promises that top managers give to support their employees. Therefore, violation of this contract not only involves depriving organizational support, but also reduces the employee's belongings. The main purpose of this paper was to examine the imp...