Fault detection and isolation is a challenging task in the control of large scale complex systems. In this work we proceed to the fault diagnosis of an electric power transmission system based on a fault diagnosis of ...
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ISBN:
(纸本)0780386825
Fault detection and isolation is a challenging task in the control of large scale complex systems. In this work we proceed to the fault diagnosis of an electric power transmission system based on a fault diagnosis of hybrid systems method presented in our previous work. Power systems often exhibit complex behavior in response to large disturbances. Such behavior is characterized by interactions between continuous dynamics and discrete events. Components such as loads drive the continuous dynamics, while other components such as protection devices exhibit event-driven discrete dynamics. Therefore, power systems constitute an important case of hybrid systems for fault detection.
One of well-known routing protocol for ad hoc networks is zone routing protocol (ZRP). The performance of ZRP is better than other protocols. However, many useless control packets are used resulting in the increase of...
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One of well-known routing protocol for ad hoc networks is zone routing protocol (ZRP). The performance of ZRP is better than other protocols. However, many useless control packets are used resulting in the increase of network load and decrease of network performance. In this paper, we propose a selective border-casting zone routing protocol (SBZRP) to reduce the network load by limiting the number of control packets when the protocol searches for a new route. The performance evaluation via simulations shows that the SBZRP has better performance than ZRP.
An improved genetic algorithm based on information entropy is presented in this paper. As a new iteration scheme in conjunction with multi-population genetic strategy, entropy-based searching technique with narrowing ...
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ISBN:
(纸本)0780384032
An improved genetic algorithm based on information entropy is presented in this paper. As a new iteration scheme in conjunction with multi-population genetic strategy, entropy-based searching technique with narrowing down space and the quasi-exact penalty function is developed to solve nonlinear programming (NLP) problems with equality and inequality constraints. A specific strategy of reserving the fittest member with evolutionary historic information is effectively used to approximate the solution of the nonlinear programming problems to the global optimization. Numerical examples show that the proposed method has good accuracy and efficiency.
The routing algorithms for multimedia communication should use for routing more than one QoS parameter. This is because new services such as video on demand and remote meeting systems require better QoS. However, the ...
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The routing algorithms for multimedia communication should use for routing more than one QoS parameter. This is because new services such as video on demand and remote meeting systems require better QoS. However, the problem of QoS routing is difficult and to find a feasible route with two independent path constraints is NP-complete. Also, QoS routing algorithms for broadband networks must be adaptive, flexible, and intelligent for efficient network management. In this paper, we propose a multipurpose optimization method for QoS routing based on genetic algorithm (GA). The simulation results show that proposed method has a good performance and is a promising method for QoS routing.
In this paper we consider two random graph models and their relationship. More specifically, we consider the random graph model Gn,m, where a random graph is constructed by drawing uniformly and independently m edges ...
This paper studies a simple nonlinear feedback system that consists of a relay-hysteresis in feedback with a linear continuous-time unstable second-order system. With suitable parameters and initial conditions, the sy...
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ISBN:
(纸本)0780382730
This paper studies a simple nonlinear feedback system that consists of a relay-hysteresis in feedback with a linear continuous-time unstable second-order system. With suitable parameters and initial conditions, the system can create chaos. The analytic solutions on occurrence chaos and the criterion for maximum stability margin of chaos are presented.
GridSpeed is a grid portal hosting server that automatically generates and publishes a customized Web interface to the grid for applications, with minimal effort required from the user. Users need only to specify info...
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GridSpeed is a grid portal hosting server that automatically generates and publishes a customized Web interface to the grid for applications, with minimal effort required from the user. Users need only to specify information regarding their application using simple GridSpeed Web forms. With GridSpeed, users need not make any modifications to their applications nor write any glue code to publish the application on the Web, not requiring any knowledge of Perl, JSP (Java server pages) or Java servlets. Moreover, the portal generated by GridSpeed provides an application frontend as well as a set of fundamental portal services such as an information service, monitoring service, data management, single sign-on, and so forth. GridSpeed publishes a set of portals as grid services themselves generated by the system that is shamble, searchable, and accessible from others interested in using the application. This feature facilitates the reuse of application portals for specific application domains, as well as increases the number of available grid applications accessible on the Web. This work describes an overview and architecture of the GridSpeed system, and evaluates the system for two real-world scientific applications: BLAST and MCell.
The routing algorithms for multimedia communication should use for routing more than one QoS parameter. This is because new services such as video on demand and remote meeting systems require better QoS. However, the ...
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ISBN:
(纸本)0769520510
The routing algorithms for multimedia communication should use for routing more than one QoS parameter. This is because new services such as video on demand and remote meeting systems require better QoS. However, the problem of QoS routing is difficult and to find a feasible route with two independent path constraints is NP-complete. Also, QoS routing algorithms for broadband networks must be adaptive, flexible, and intelligent for efficient network management. In this paper, we propose a multipurpose optimization method for QoS routing based on Genetic Algorithm (GA). The simulation results show that proposed method has a good performance and is a promising method for QoS routing.
The SCHEMA Network of Excellence aims to bring together a critical mass of universities, research centers, industrial partners and end users, in order to design a reference system for content-based semantic scene anal...
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The SCHEMA Network of Excellence aims to bring together a critical mass of universities, research centers, industrial partners and end users, in order to design a reference system for content-based semantic scene analysis, interpretation and understanding. In this paper, advances in the development of the SCHEMA reference system are reported, focusing on the application of region-based image retrieval using automatic segmentation. More specifically, the integration of four segmentation algorithms and the MPEG-7 eXperimentation Model with the reference system are discussed, along with the motivation behind these and various other choices that were made during the development of the reference system. Experimental results for this system, as well as results for an earlier version of it employing proprietary descriptors, are shown using a common collection of images. Comparative evaluation of these versions, both in terms of retrieval accuracy and in terms of time-efficiency, allows the evaluation of the reference system as a whole as well as the evaluation of the usability of different components integrated with it, such as the MPEG-7 eXperimentation Model. These results illustrate the efficiency of the proposed system, as well as its suitability in serving as a test-bed for evaluating and comparing different algorithms and approaches pertaining to the content-based and semantic manipulation of visual information.
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