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Teaching and learning more abstract subjects, such as computer networks, where higher level of student's imagination is necessary to understand advanced topics can be positively supported trough a technique called visual learning. Students can more easily understand and adapt the information from the subject, when they can visually see how it really works. Teachers can present the subject using animations...
Recent years have witnessed the explosions of severe virus attacks to the computer networks for E-commerce. In light of this, researches on modeling virus propagation have drawn an increasing amount of interests in the literature. However, the group based infection mechanism of computer viruses remains unknown. To meet this challenge, in this paper, we propose a Point-to-Group (P2G) infection mode...
This paper presents a distributed fermat-point range estimation strategy, which is important in the moving sensor localization applications. The fermat-point is defined as a point which minimizes the sum of distances from three sensors inside a triangle. This point is indeed at the trianglepsilas center of gravity. We solve the problems of large errors and poor performance in the bounding box algorithm...
In this paper, we propose an adaptive pacing scheme at the link layer for IEEE 802.11 based multihop wireless networks. Our objective is to improve the performance of higher layer protocols without any modifications to them. Our adaptive pacing scheme estimates the four-hop transmission delay in the network path without incurring any additional overheads, and accordingly paces the packets to reduce...
Through analyzing the changes of key services' performance index value before and after evaluation, this paper proposed a novel quantitative analysis method for network survivability based on grey relational analysis. Starting with the normalization of decision matrix with interval number, the proposed method firstly applied grey relational analysis to assess the best affiliate degree and survival...
Multidestination message passing is attractive in multicast communication because it reduces software overheads at processor nodes effectively. Combining the best features of two existing approaches (tree-based multicasting and multidestination message passing), we propose a novel tree-based multidestination (TBM) multicast scheme, which employs a new efficient multidestination message format. The...
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