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Although the Z-domain precoding method for blind separation of spatially correlated sources is proved reliable in theory, it has disadvantages in its implementation since it requires knowledge of precoder zeros at the receiver beforehand. A new method is proposed in this article to find these precoder zeros and estimate the separation vectors of the coded signals at the same time by exploiting the...
An improved Rapidly-exploring Random Tree∗ (RRT∗) algorithm was given, which focused on the problem of UAV path planning in 3-D dynamic environment. By considering the constraint of the UAV, the frequency of collision checking in the searching stage was reduced. And this could save searching time. D∗ Lite algorithm was introduced to RRT∗ to solve the dynamic path planning problem. The information...
In this paper, an electronic components inventory model with fuzzy multi-parameters is considered. Economic order quantity (EOQ) is developed for optimal order quantity with all parameters assumed to be exact or crisp. Actually these parameters are not precise while varying over a range. In such case fuzzy set theory is applied to electronic components inventory planning and control problems. With...
In recent years, botnets have become a significant threat, drawing the attention of computer security practitioners and researchers. As the extensive use of peer-to-peer (P2P) technology, P2P structured botnets have gradually emerged as a new advanced form of botnets. In this paper, we analyze the features of this new type botnet and evaluate effectiveness of various botnets defense strategies. However,...
The existing expert information systems supply services for searching information of experts and help the users to select suitable experts to evaluate all types of projects in different fields, however, almost all of these search services use keyword match, and it is hard to gain high search efficiency. Ontology has been proved to be very useful in sharing concepts across applications in an unambiguous...
In grid environments, advance reservation mechanism is to provide reliable resource co-allocation and scheduling for applications. However, excessive advance reservation will bring about many negative effects for system's performance, such as lower resource utilization and higher rejection rate. To mitigate these negative effects of advance reservation, a relaxed reservation strategy is proposed,...
The plateau environmental quality while vehicle engine using was generalized. The influence of plateau environmental condition on vehicle engine characteristics was analyzed. The proving test program of vehicle enginepsilas plateau compatibility was given based on the analysis of the influence of plateau environmental condition on vehicle enginepsilas performance and compatibility. By using the improved...
With the rapid development of the network technology and the advent of various multimedia applications, multicasting technology is widely applied. The paper mainly focuses on the algorithm to construct multicast routing tree with QoS requirements. An improved genetic algorithm is presented, in which the GA structure is modified in order not to trap in local optimization, the tree structure coding...
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