In SIP-based networks, there is a need to provide basic network media services. Such services include network announcements, user interaction, and conferencing services. These services are basic building blocks, from which one can construct interesting applications. In order to have interoperability between servers offering these building blocks (also known as Media Servers) and application dev...

Zhongqiang Zhang 1, Xiu Yang 2 and Guang Lin 3,* 1 Department of Mathematical Sciences, Worcester Polytechnic Institute, Worcester, MA 01609, USA; [email protected] 2 Advanced Computing, Mathematics and Data Division, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99352, USA; [email protected] 3 Department of Mathematics & School of Mechanical...

Background: Despite the implementation of harm reduction program, some injecting drug users (IDU) continue to engage in high-risk behaviors. It seems that there are some social factors that contribute to risk of human immunodeficiency virus (HIV) transmission in IDUs. The aim of this study was to analysis the social network of IDUs and examines the effect of network location on HIV transmission...

introduction: hospital has a complex and special structure and the important question that hospital management facing with is how technology can change structure. in the near future, no factor like it is able to change the structure of organization. this research is a way to know the effect of it on triple dimensions of organization structure includes complexity, formalization, and centralizati...

the contemporary globalization which is based on post-fordist economy, was formed on the basis of informational capitalism, and has been differentiated from other concepts due to some characteristics like information economy, global economy, and network economic activities.     the characteristics of post-fordist economy create a situation where capitals and productions are changed from place-...

This study explored how consumer interactions evolve within an emerging brand community. Since newly formed brand communities are marked by the presence of scalefree networks, an ethnographic study among individuals in their second year of tailgating at American football games was conducted to examine whether group leaders were able to empower their followers and alleviate the Achilles’ Heel of...

The Popularity-Similarity (PS) model sustains that clustering and hierarchy, properties common to most networks representing complex systems, are the result of an optimisation process in which nodes seek to form ties, not only with the most connected (popular) system components, but also with those that are similar to them. This model has a geometric interpretation in hyperbolic space, where di...