Research ArticleOpen accessIn the abstractCooperative Sensing in Cognitive Radio Networks-Avoid Non-Perfect Reporting ChannelRania A. Mokhtar, Sabira Khatun, B. M. Ali, A. RamliProblem statement: Cognitive radio is a candidate technology for more efficient spectrum utilization systems based on opportunistic spectrum sharing. However, a common assumption regarding cognitive radios is that they are unlicensed spectrum users that should defer to (avoid interfering with) existing primary sources. Therefore effective sensing of primary users was a major focus of current research. Cooperative spectrum sensing had … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 2 · 30 Jun 2009 · 7,742 accessesView PDFCite
Research ArticleOpen accessIn the abstractEnhancing Wireless Medium Access Control Layer Misbehavior Detection System in IEEE 802.11 NetworkA. M. Alsahag, M. OthmanWireless Medium Access Control (MAC) protocols such as IEEE 802.11 use distributed contention resolution mechanisms for sharing the wireless channel. In this environment, selfish hosts that fail to adhere to the MAC protocol may obtain an unfair throughput share. For example, IEEE 802.11 requires hosts competing for access to the channel to wait for a "back-off" interval, randomly selected from … …Journal of Computer Science, Vol. 4, Issue 11 · 30 Nov 2008 · 6,967 accessesView PDFCite
Research ArticleOpen accessIn the abstractImplementation of Computational Grid Services in Enterprise Grid EnvironmentsR.J.A. Richard, Ajay Anant Joshi, C. EswaranGrid Computing refers to the development of high performance computing environment or virtual super computing environment by utilizing available computing resources in a LAN, WAN and Internet. This new emerging research field offers enormous opportunities for e-Science applications such as astrophysics, bioinformatics, aerospace modeling, cancer research etc. Grid involves coordinating and sharing of computing power, application, data storage, network resources … …American Journal of Applied Sciences, Vol. 5, Issue 11 · 30 Nov 2008 · 7,373 accessesView PDFCite
Research ArticleOpen accessIn the abstractConstructing a Grid Simulation for E-Governance Applications Using GridSimMrs. P. Sumathi, M. PunithavalliThis study provides a design framework for the adoption of grid computing for e-governance applications. Problem statement: E-Governance is the application of information and communication technology to achieve efficiency, effectiveness, transparency and accountability in Government to Government (G2G), Government to Employee (G2E), Government to Citizen (G2C) and Government to Business (G2B). It enables citizens to make best use of automated … …Journal of Computer Science, Vol. 4, Issue 8 · 31 Aug 2008 · 6,770 accessesView PDFCite
Research ArticleOpen accessIn the abstractFeature Analysis of Ontology Mediation ToolsRavi Lourdusamy, Gopinath GanapathyOntology mediation is enabled through interoperability of semantic data sources. It helps data sharing between heterogeneous knowledgebase and reuse by semantic applications. Ontology mediation includes operations such as, mapping, alignment, matching, merging and integration. After briefly describing these operations, this study selectively discusses set of methods, tools and data integration systems. It provides the researchers a comprehensive understanding of methods … …Journal of Computer Science, Vol. 4, Issue 6 · 30 Jun 2008 · 6,657 accessesView PDFCite
Research ArticleOpen accessIn the abstractArithmetic Encoding Based Dynamic Source Routing for Ad-Hoc NetworksAjay Koul, R. B. Patel, V. K. BhatAn ad hoc network is a collection of mobile stations forming a temporary network without the aid of any centralized coordinator. Routing messages are an essential component of Mobile Adhoc Networks, as each packet needs to be passed quickly through intermediate nodes from source to destination. Internal threats due to changes in the node behaviour that target the routing discovery … …Journal of Computer Science, Vol. 4, Issue 5 · 31 May 2008 · 6,609 accessesView PDFCite
Research ArticleOpen accessIn the abstractAn Effective Data Transformation Approach for Privacy Preserving ClusteringR. R. Rajalaxmi, A. M. NatarajanA new stream of research privacy preserving data mining emerged due to the recent advances in data mining, Internet and security technologies. Data sharing among organizations considered to be useful which offer mutual benefit for business growth. Preserving the privacy of shared data for clustering was considered as the most challenging problem. To overcome the problem, the data owner published … …Journal of Computer Science, Vol. 4, Issue 4 · 30 Apr 2008 · 7,117 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Multi-Agent Architecture for QoS Support in Grid EnvironmentAli Rezaee, Amir M. Rahmani, Saeed Parsa, Sahar AdabiGrid computing is emerged as a new distributed computing technology that implements flexible and coordinated resource sharing among dynamic, heterogeneous, unpredictable and geographically distributed collections of resources owned by different individuals and organizations. Due to heterogeneous and dynamic nature of the grid, resource management and application scheduling is a complex undertaking. This paper proposed a multi-agent architecture that addressed resource … …Journal of Computer Science, Vol. 4, Issue 3 · 31 Mar 2008 · 7,082 accessesView PDFCite
Research ArticleOpen accessIn the abstractNimble Protein Sequence Alignment in Grid (NPSAG)K. Somasundaram, S. RadhakrishnanIn Bio-Informatics application, the analysis of protein sequence is a kind of computation driven science which has rapidly and quickly growing biological data. Also databases used in these applications are heterogeneous in nature and alignment of protein sequence using physical techniques is expensive, slow and results are not always guaranteed/accurate. So this application requires cross-platform, cost-effective and more computing power … …Journal of Computer Science, Vol. 4, Issue 1 · 31 Jan 2008 · 6,924 accessesView PDFCite
Research ArticleOpen accessIn the abstractFeature Selection in Data-Mining for Genetics Using Genetic AlgorithmV. N. Rajavarman, S. P. RajagopalanWe discovered genetic features and environmental factors which were involved in multifactorial diseases. To exploit the massive data obtained from the experiments conducted at the General Hospital, Chennai, data mining tools were required and we proposed a 2-Phase approach using a specific genetic algorithm. This heuristic approach had been chosen as the number of features to consider was large (upto … …Journal of Computer Science, Vol. 3, Issue 9 · 30 Sep 2007 · 6,630 accessesView PDFCite