In recent years, there has been an explosion in the number of Social Web sites which allow the creation of knowledge through simplified user contributions via blogs, wikis, and the deployment of online social networks. As more Social Web CES IN COMPUTERS, VOL. 76 121 Copyright © 2009 Elsevier Inc. 65-2458/DOI: 10.1016/S0065-2458(09)01004-3 All rights reserved. 122 S. KINSELLA ET AL. sites form ...

In this paper we define a family of centrality measures for directed social networks from a game theoret71 eywords: ocial networks ame theory ical point of view. We follow the line started in our previous paper (Gómez et al., 2003) and, besides the definition, we obtain a characterization of the measures and an additive decomposition in three summands that can be interpreted in terms of emissio...

Achieving social acceptance and avoiding rejection by eers are strong motivational goals during development, articularly during the period of adolescence (Sebastian t al., 2010). Autism spectrum disorder (ASD) is a develpmental disorder characterised in part by problems with ocial interaction. Individuals with high-functioning ASD eport a desire for friendship (Frith, 2004); however, they lso e...

Trains are running through a rail network trying to meet a predened schedule, the Ocial Timetable, which species when each train enters and exists the stations on its route. When one or more trains deviate from the ocial timetable, new schedules and possibly new routes must be identied and implemented very quickly. Also, the new plan should minimize some measure of the delays. In a rst and very...

This study investigates whether age and gender moderate the effects of social network and neighborgocentric social network ocial disorganization ontextual effects eighborhood effects ctivity space oderation hood contexts on adolescent substance use using a spatially embedded, egocentric social network data set comprised of 254 urban adolescents. Results indicate that substance use is enhanced b...

S ocial inequalities in health are to be found in all European countries (Mackenbach et al., 2008; van Dooslaer et al., 2004). Following a report from the World Health Organisation Commission on Social Determinants of Health (WHO, 2008), health inequalities were recognised as a major public health issue. Reducing these inequalities has thus become a stated political objective in numerous Europe...

ocial networks ersonal networks ndividual difference onstraints motional closeness Studies of active personal networks have primarily focused on providing reliable estimates of the size of the network. In this study, we examine how compositional properties of the network and ego characteristics are related to variation in network size. There was a negative relationship between mean emotional cl...