Peer-to-peer systems have largely replaced the client-server architecture. There are different solutions for the arising problems of efficient object location, scalability, and robustness, resulting in different approaches. We give a short overview of the concepts of structured and unstructured peer-to-peer networks and discuss the handling of those problems in each case. In particular, the Bit...

in the area of youth health, peers education is an approach to health promotion. assess the training needs of peers educators clarifies the components, values, and quality of training protocols. aim to that we conducted a participatory educational needs assessment of youth peer educators.involving youth and key informants in direct collaboration with research team, a qualitative approach was pl...

A central problem for structured peer-to-peer networks is topology maintenance, that is, how to properly update neighbor variables when nodes join and leave the network, possibly concurrently. In this paper, we first present a protocol that maintains a ring, the basis of several structured peer-to-peer networks. We then present a protocol that maintains Ranch, a topology consisting of multiple ...

The utility of Peer-to-Peer (P2P) systems extends far beyond traditional file sharing. This paper provides an overview of how P2P systems are capable of providing robust command and control for Distributed Multi-Agent Systems (DMASs). Specifically, this article presents the evolution of P2P architectures to date by discussing supporting technologies and applicability of each generation of P2P s...

Structured overlays provide a basic substrate for many peer-to-peer systems. Existing structured overlays can be classified into two categories, O(logN)-hop ones and O(1)-hop ones. The former are suitable for large and dynamic systems, while the latter are suitable for small or stable ones. However, for the lack of adaptivity, it is difficult for a peer-to-peer system designer to choose from th...

Structured peer-to-peer (p2p) overlay networks like CAN, Chord, Pastry and Tapestry [3, 6, 5, 9] provide a self-organizing substrate for large-scale peer-to-peer applications. These systems provide efficient, fault-tolerant routing, object location and load balancing within a selforganization overlay network. In this paper, we show how redundant information that is collected as part of the norm...

Topology maintenance, or how to handle the possibly concurrent joining and leaving of nodes, is acentral problem for structured peer-to-peer networks. A good topology maintenance protocol should runefficiently, fully maintain the topology, and should not unduly restrict concurrency. In this paper, wepresent such a protocol for a multi-ring topology called Ranch. The protocol is effi...

In this paper, the action research driven design of a context relevant, developmental peer review of teaching model, its implementation strategy and its impact at an Australian university is presented. PRO-Teaching realizes an innovative process that triangulates contemporaneous teaching quality data from a range of stakeholders including students, discipline academics, learning and teaching ex...

Title of dissertation: SYSTEM SUPPORT FOR KEYWORD-BASED SEARCH IN STRUCTURED PEER-TO-PEER SYSTEMS Vijay Gopalakrishnan, Doctor of Philosophy, 2006 Dissertation directed by: Dr. Bobby Bhattacharjee and Dr. Pete Keleher Department of Computer Science In this dissertation, we present protocols for building a distributed search infrastructure over structured Peer-to-Peer systems. Unlike existing se...

INTRODUCTION Across the globe, peer support groups have emerged as a community-led approach to accessing support and connecting with others with cancer experiences. Little is known about qualities required to lead a peer support group or how to determine suitability for the role. Organisations providing assistance to cancer support groups and their leaders are currently operating independently,...