the data for this study has been collected from a questionnaire examining the relationship between birth weight of the new born and some physical and socio-economic characteristics of the mother. between dec.1975 to jan.1976, 1553 women who had referred to two hospitals in tehran for labor: 981 to farah maternity and 572 to firoozgar hospital have been interviewed. the results of the study have...

Background: Using assisted reproductive donation procedures increase hope in infertile couples. However large part of the world population do not recognize these procedures. One of the important steps in recognition of infertile couples’ problem, whose only therapeutic option is using assisted reproductive donation procedures, is investigating their Socio-cultural Beliefs about these procedures...

socio-political metatheories based on ontological and epistemological foundations, could be devided to different objectivist and subjectivist fronts. according to such a devide, different interpretation of individual-society and agent-structure could be renderd. in contrast,critical metatheories that seek to transcend the contradiction between objectivity-subjectivity in the individual-society ...

Undoubtly, land degradation causes apparent decrease of natural resources potential which are highly linked to desertification. Different countries and also international organization have realized a great number of projects to combat desertification. Unfortunately these projects have not reach to their goals. The experiences shows that the reason of these unsuccessful works is lack of consider...

the Epidemiology of normal pregnancies with unknown last menstrual period (LMP) was studied in 1192 singleton  pregnancies.the LMP was unknown in 240(20.3%) pregnancies.unknown LMP is associated with high rates of low birth weight and all low socio-economic and socio-demographic status.such characteristics are also associated with a high rate of preterm deliveries.any possible bias introduced i...

In this paper we seek to empirically study the use of location-awareness of others in the context of mobile collaboration. We report on a field experiment carried out using a pervasive game we developed called CatchBob!. Using both quantitative and qualitative data, we show the underwhelming effects of automating location-awareness. Our results indeed shows that automating this process does not...

The aim of this paper is to provide a theory of the role trust plays in knowledge sharing processes, by exploiting a cognitive model of the goals and beliefs of an agent involved in the decision of passing and/or accepting knowledge, and a related model of the symmetrical or asymmetrical trust relationships within a group (Trust-Nets). This theory is based on the claim that trust is a fundament...