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Cloud computing as a widely used computing platform can provide a number of services for customers in a pay-as-you-go fashion. Enabling further growing and complex needs of users, service of different independent cloud provider should be composed to deliver uniform Quality of Service (QoS) as a single request. An open and valid question is how to select services as a partner chain and optimize the...
As a tool to serve the elderly and disabled people, intelligent wheelchair may work in spacious and dynamic environments, such as parking lot. One difficulty of working in such scenarios is spaciousness and large scale which increases the difficulty of mapping. And the other is that there are various dynamic obstacles with different mobile frequency in the environment, which poses a new challenge...
In this paper, a High Precise Optimization Algorithm for manipulating multi-layered feed-forward neural network is studied. Its basic principle is: defining neural network average error as objective function, weights and thresholds as design variables, through design variables rationally sorted, objective function is dynamically formed. Compared the new method with BP, the optimum step-length can...
The structure of traditional distribution network is changed from a single supply radial network to a more power ring network when grid is connected with distributed generations (DG), and island phenomenon occurs higher in the process of reconstruction, which becomes uncontrolled and high risk operation and increased the difficulty of distribution network reconstruction. The improved immune genetic...
Multiple heterogeneous processor systems on chip are more and more widely used in order to provide a higher system performance. Run-time mapping for heterogeneous Network on Chip (NoC) is challenging since the sequence of the incoming applications is unknown in advance. This paper presents Heterogeneous Near Convex Region Algorithm (HNCR), an incremental run-time mapping algorithm for heterogeneous...
Self-healing is the most important characteristic of smart grid, and its content including two parts: self-adjustment at normal state and self-restoration at breakdown state. In distribution network, the objective of self-healing control is supply users ceaseless electric power. The paper proposes a rapid heuristic restoration algorithm to achieve the process from breakdown state to normal state....
Due to the information on the Web being tremendous, dynamic and irregular, it is difficult to search and integrate information from the Web. This paper proposes a Web information extraction algorithm based on Ontology and DOM tree. The areas are accurately found out and the interested information is extracted exactly by information extraction rules generated by ontology. Furthermore this algorithm...
In this paper, a low-cost attitude estimation system is introduced. The system is developed with MEMS sensors including rate gyros and accelerometers. Composition and principle of the system are described. The rigid body kinematics is modeled with quaternion, such that eliminates attitude estimation singularities. The real-time Kalman filter is designed. Experiments were conducted in both static and...
Personal Credit Scoring is of great significance for commercial banks to circumvent credit consumption, the original BP algorithm's convergence rate is slow, learning precision is low, the training process is easy to fall into local minimum, this paper presents an improved algorithm with variable learning rate based on BP algorithm, and applied to simulate personal credit scoring. After comparing...
One of the most important constraints on wireless sensor network is the low power consumption. Therefore, topology of wireless sensor network must focus on power conservation. It is possible to extend the lifetime of a network by controlling its topology through clustering. Topology control target tracking-oriented based on overlapping clustering in wireless sensor network is proposed in this paper...
P2P storage systems have a lot of attractive advantages, such as self-organizing, scalability, robust and fault-tolerant. Unfortunately, there are some problems in real network conditions, especially, when considering asynchronous wide-area networks, where messages may be delayed indefinitely and nodes may fail. So, failure detector is one of basic components to build a reliable P2P storage systems...
Collaborative signal processing cluster-based for target tracking in wireless sensor network is proposed in this paper. Node clustering is a useful approach to reduce the communication overhead and develop data fuse in wireless sensor networks. Each sensor node, which has incomplete information about its dynamic and uncertain world, must respond to sensed events within time constraints. The aim of...
The grid technology enables large-scale sharing and collaboration use of networked resource. Using P2P technology, grid system can have better scalability and dynamic. OGSA provides a framework for integrating P2P technology into grid system. However, grid resource discovery is a key issue for P2P grid. In this paper, a novel model based on P2P technology, is proposed to discovery grid resource efficiently...
Artificial immune network has been receiving particular attention over the last few years. Recent researches have revealed that, without stimulation and cooperation of network cells, lots of redundant explorations waste ldquoresourcesrdquo, which affects searching ability and searching speed. In this paper, a cooperative artificial immune network denoted CoAIN is devised for multimodal function optimization...
Power system defensive islanding is an efficient way to avoid catastrophic wide area blackouts, such as the 2003 North American blackout. Finding defensive islands of large scale power systems is a combinatorial explosion problem. Thus, it is very difficult to find an optimal solution, if it exists, within reasonable time using analytical methods. This paper proposes utilizing the computational efficiency...
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