Problem statement: Trust management in a distributed dynamic environment like grid has been very vital since the allocation of appropriate resources to meet user request influences the success of the system. While considering a set of resources which are loaded invariably, balancing the load also contributes for the efficient resource utilization. Approach: This study proposes a trust calculati...

In a pervasive computing environment, the need to establish trust amongst distributed services has attracted increasing attentions from both the industry and academia. As a widely adopted solution to carry a principal’s identity and attributes of different organizations, the credential-based trust establishment has become popular over Internet. In this paper, we propose a hybrid negotiation tre...

Agent interaction in a community, such as the online buyer-seller scenario, is often uncertain, as when an agent comes in contact with other agents they initially know nothing about each other. Currently, many reputation models are developed that help service consumers select better service providers. Reputation models also help agents to make a decision on who they should trust and transact wi...

Trust models provide a framework to create and manage trust relationships among the different entities of a Public Key Infrastructure (PKI). These trust relationships are verified through the certification path validation process, which involves: path discovery, signature verification and revocation status checking. When trust relationships are bidirectional, multiple paths can exist between tw...

Collaborative filtering (CF) recommender systems are typically unable to generate adequate recommendations in sparse datasets. Empirical evidence suggests that incorporation of a trust network among the users of a recommender system can significantly help to alleviate this problem. For this reason, some studies have been done on combining CF with trust-enhanced recommender system. In this study...

conclusions islam has a unique perspective on spiritual health as it encompasses all aspects of human beings. thus, it is necessary to carefully study the difference between the islamic concept of spiritual health and that of other religions and ideologies to design suitable and useful nursing care for iranian patients that satisfy their spiritual needs. results the relevant literature in the t...

0140-3664/$ see front matter 2008 Elsevier B.V. A doi:10.1016/j.comcom.2008.07.014 * Corresponding author. Tel.: +4142885222. E-mail address: [email protected] (S.I. Aham To cope with the challenges posed by device capacity and capability, and also the nature of ad hoc networks, a Service discovery model is needed that can resolve security and privacy issues with simple solutions. The use of...