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Cognitive radio is a promising solution for spectrum scarcities in the future. Secondary users (SUs) adopt cooperative sensing to learn the primary user's (PU's) occupancy activity. This paper develops a trust-based data aggregation scheme to cope with malicious SU attack in cooperative spectrum sensing in cognitive radio networks. The proposed scheme combines the first-hand and second-hand sensing...
Cloud computing is the buzz word where the likes of servers, storage, applications etc., are provided as service to organizations and individual users. The on-demand delivery of service, on a pay-as-you-go model, showcases the flexibility of this service benefiting users to cut down on the capital expenditure. Resource management, governed by optimal resource allocation, becomes an essential ingredient...
Cloud Computing is an emerging computing paradigm. It shares massively scalable, elastic resources (e.g., data, calculations, and services) transparently among the users over a massive network. The Cloud market is growing rapidly and bringing up numerous research challenges. This paper provides a landscape of Cloud Computing and its research challenges, especially considering the areas of service...
Trust and reputation for web services emerges as an important research issue in web service selection. Current web service trust models either do not integrate different important sources of trust (subjective and objective for example), or do not focus on satisfying different user's requirements about different quality of service (QoS) attributes such as performance, availability etc. In this paper,...
Trust is required in a file sharing peer-to-peer system to achieve better cooperation among peers. In reputation-based peer-to-peer systems, reputation is used to build trust among peers. In these systems, highly reputable peers will usually be selected to upload requested files, decreasing significantly malicious uploads in the system. However, these peers need to be motivated by increasing the benefits...
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