Hesham A. Ali

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Data mining techniques are important to sift through the huge amount of gene expression values in microarrays resulting in valuable biological knowledge. An important example is classifying cancer samples, which is crucial to biologists for cancer diagnosis and treatment. In this paper we propose the DMCA technique in which the main objective is reducing(More)
Semantic Web Services (SWSs) represent the most recent and revolutionary technology developed for machine-to-machine interaction on the web 3.0. As for the conventional web services, the problem of discovering and selecting the most suitable web service represents a challenge for SWSs to be widely used. In this paper, we propose a mapping algorithm that(More)
Iris recognition has very high recognition accuracy in comparison with many other biometric features. Many algorithms have been proposed to improve the performance of iris recognition. This paper proposes an iris recognition algorithm in which a set of iris images of a given eye are fused to generate a final template using the most consistent feature data.(More)
A database intrusion detection system (DIDS) is used to detect potential violations in database security. DIDS follows other traditional database security mechanisms and network security mechanisms such as firewall and network intrusion detection. Therefore, it faces the intrusion from internal users or the intrusion that can be passed through other(More)
Recently, there have been considerable efforts towards the convergence between P2P and Grid computing in order to reach a solution that takes the best of both worlds by exploiting the advantages that each offers. Augmenting the peer-to-peer model to the services of the Grid promises to eliminate bottlenecks and ensure greater scalability, availability, and(More)
The Grid Workflow scheduling is one of the most important issues in Workflow management because of its impact on the performance. Due to its importance, many scheduling approaches are proposed including static, dynamic and adaptive ones. Static approaches performance in Grid environment is questioned due to the continuous environment changes. The main(More)
AbstRAct Due to the rapidly increasing of the mobile devices connected to the internet, a lot of researches are being conducted to maximize the benefit of such integration. The main objective of this paper is to enhance the performance of the scheduling mechanism of the mobile computing environment by distributing some of the responsibilities of the access(More)
The main objective of PCS networks is to provide “anytime-anywhere” cellular services. Accordingly, lost calls as well as the network slow response have become the major problems that hardly degrade the network reliability. Those problems can be overcome by perfectly managing the Mobile Terminals (MTs) locations. In the existing location management (LM)(More)