INTRODUCTION Smokers' social networks vary in size, composition, and amount of exposure to smoking. The extent to which smokers' social networks change after a quit attempt is unknown, as is the relation between quitting success and later network changes. METHODS Unique types of social networks for 691 smokers enrolled in a smoking-cessation trial were identified based on network size, new ne...

network scale-up is an indirect method for estimating the size of hidden, hard-to-count or high risk populations. social network size estimation is the first step in this method. the present study was conducted with the purpose of estimating the social network size of the tehran province residents and its determinants.maximum likelihood estimation was applied to estimate people's network sizes ...

Social network technology has been established as a prominent way of communication between members of an organization or enterprise. This paper presents an approach extending the typical social network interaction model to promote participant collaboration through service provision within an organization, towards the Enterprise 2.0 vision. The proposed interaction model between enterprise netwo...

forest management as one of the important source of production is crucial and critical. in taking over the forest resources as one of the most important of natural resources in the world, it is essential to consider local stakeholders to implement forest action plan for forest co-management. therefore, this study aims at achieving to proper management of forests based on evaluating the stakehol...

traumatic brain injury (tbi) is a common injury leading to child disability and is associated with a variety of long-term cognitive, social, and behavioral dysfunctions. emotion perception (ep) starts up an integral part of social communication is critical to achieve developmentally appropriate goals. this skill, which emerges relatively early in development, is driven by increasing connectivit...

How are people linked in a highly connected society? Since in many networks a power-law (scale-free) node-degree distribution can be observed, power-law might be seen as a universal characteristics of networks. But this study of communication in the Flickr social online network reveals that powerlaw node-degree distributions are restricted to only sparsely connected networks. More densely conne...

Eighty-four students distributed between two different courses at a major research university (one a communication course, the other a computer science course) were given laptop computers with wireless network access during the course of a semester. Awide variety of data (from questionnaires, e-mail logs, proxy server logs, and diaries) regarding students’ use of the laptops for electronic comm...

Collaborative filtering based recommendation methods focus on user-item information for modeling the user interest. However, in social networks the user interest is influenced by other user interests in the local social circle of the active user. In this paper, considering the homophily of relation to similar interests and similar friends, we propose a social item recommendation framework (SocI...

Social network has several downstream pathways including social support, social influence, and social engagement, and its relation with a wide range of aspects of cardiovascular diseases such as onset, survival of patients, and mortality has been examined. Studies using network analysis has been also conducted, and Christakis and Fowler have demonstrated a spread of obesity through social ties ...