health systems research aims to understand the governance of health systems (i.e. how health systems function and perform and how their actors interact with each other). this can be achieved by applying innovative methodologies and concepts that are going to capture the complexity and dynamics of health systems when they are affected by shocks. the capacity of health systems to adapt to shocks ...

Given increases in childlessness, we ask if and how the permanently childless substitute for adult children in their later-life support networks. Previous research finds that they are disadvantaged on several network and support indicators. Yet, the role of different substitution mechanisms remains unclear. We examine two substitution mechanisms: substitution through adjustments of network size...

We explore what benefits network position in online business social networks like LinkedIn might confer to an aspiring entrepreneur. We compare two network attributes, size and embeddedness, and two actor attributes, location and diversity, between virtual and real-world networks. The promise of social networks like LinkedIn is that network friends enable easier access to critical resources suc...

This case-control study evaluated the factors influencing volunteering in the Islamic Republic of Iran's Women's Health Volunteer (WHV) programme, which is implemented in 150 centres in Khorasan-e-Razavi Province. We recruited 145 cases (volunteers) and 146 controls (non-volunteers) from the centres. Data were collected by questionnaire. Sociodemographic variables included were: length of resid...

Social network analysis has been used in many research areas to discover the intrinsic mechanisms of social communities by examining the topological properties of the social network formed by relationships between the actors and the groups in those communities. In this chapter, we construct four social networks for the Open Source Software (OSS) development community at SourceForge (Sourceforge...

In this study, a method based on using image processing and artificial neural network is introduced to determine pelt color and curl size of newborn lambs in Zandi sheep. The data was collected from 300 newborn lambs reared in the Zandi sheep breeding centre of Khojir, Tehran. Primarily, curl size and pelt color of new born lambs was recorded by experienced appraisers, and at the same time, sev...

This paper wants to study the measurement of social capital of the Payam Noor University in southern Khorasan. It also tries to increase the role of social capital through participation and membership in different groups. Thus, Two types of hypotheses were in micro and macro levels analyzed. More than 329 students were randomly selected and ( F and T) coeficeints show that variables like gender...