PURPOSE To investigate the effectiveness of a peer-mentored exercise program, this study compared the program perception, retention and participation rates, and physical improvements of older adults trained by peer mentors (PMs) with those of a group trained by student mentors (SMs). METHODS After a 30-week peer-mentor preparation, 60 older adults (M +/- SD age: 68.7 +/- 6.1 yr) were recruite...

Data from the United Nations and the International Civil Aviation Organization Information Systems were used as a base for characterizing, classifying and comparing air transport demand and supply features of 156 countries. Relevant data from 1980 were chosen to reflect five sets of characteristics namely, air transport, 50cm-economic status, population demography, geographical and environmenta...

Wikis are major applications of the Web 2.0; they are used for a large number of purposes, such as project documentation, and coordination, in open communities and in enterprises. At the application level, users are targeted as both consumers and producers of dynamic content. Yet today, this kind of peer-to-peer principle is not used: at the technical level, wikis are built using traditional cl...

1 University of Eastern Finland (FINLAND)2 Middle East Technical (TURKEY)3 Oulu (FINLAND)

Peer-oriented computing is a natural way for meeting the data sharing requirements of decentralized, highly dynamic, scalable applications. In this paper we present a framework for data sharing in a peer-to-peer database network. We first introduce a publish/subscribe model where peer groups are formed by matching peer interests (subscriptions) against publications published by relevant peers i...

In a peer to peer streaming system, the server usually provides multiple channels. Peers may form multiple groups, each corresponding to a channel for content distribution. A peer can freely switch from one channel to another. We propose a shared or distributed overlay framework (called SMesh or subset mesh) for dynamic groups where users may frequently hop between different groups. SMesh first...