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Modern Fast Frequency Hopping (FFH) systems generally use the sliding correlation scheme and the matched filter scheme which both have the best anti-jamming performance. However, the sliding correlation scheme converges too slowly and the matched filter scheme occupies too much hardware resource. An improved acquisition method was developed. Compared with the former two methods, the new method which...
An interval reliability analysis based on combination of the minimal path method for load point reliability evaluation is presented, aiming at figuring out the uncertainty and ambiguity of reliability parameters and load changing. According to the complexity of distribution network, this new algorithm sort the elements, as the result, which can rapidly obtain the reliability indices of individual...
An improved genetic algorithm on the basis of Gray encoding is presented, which is improved based on optimum maintenance of simple genetic algorithm and performs selected operator combination with fitness proportional model. The algorithm ensures the convergence property of genetic algorithm, and prevents premature phenomenon in some extent. In this paper, it is an example of the rolling shear mechanism...
Free Space Optical Sensor Network (FSOSN) has attracted increasing attention for wireless multimedia applications due to the advantages of lower energy consumption, lower cost, and larger capacity. As the performance of FSOSN is restricted by its unidirectional link among nodes, the FSOSN needs efficient routing protocols and optimal virtual topology configuration. The scanning angle of transmitter...
Following the tendency of economy globalization and the internationalization of market, bidding and bid is becoming the major transaction method in e-procurement market. In the multi-item procurement, the single attribute of price was the only considered evaluation standard in winner determination model of combinatorial auctions in most literatures, but it could not solve the problem of multi-attribute...
Monitoring data streams in a distributed system is the focus of much research in recent years. This paper addresses the generic and efficient processing of distributed top-k monitoring, which is continuously reporting the k largest values according to a user-specified aggregation function over distributed data streams. In practice, the user-specified aggregation function would be arbitrary function...
The aim of this paper is to solve the portfolio problem when security returns are bifuzzy variables. Two types of portfolio selections based on chance measure are provided according to bifuzzy theory. Since the proposed optimization problems are difficult to solve by traditional methods, A hybrid intelligent algorithm by integrating bifuzzy simulation and genetic algorithm is designed. Finally, one...
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