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IET 3rd International conference on Wireless, Mobile and Multimedia networks

作者： Xu, Xiaofeng Tan, Chong Chen, Jian Shanghai Univ Sch Commun & Informat Engn Shanghai Peoples R China

ISBN: (纸本)9781849192408

Wireless video sensor networks (WVSNs) feature the characteristics of easy deployment and low maintenance cost and therefore are suitable for a wide range of important applications, including remote surveillance, health care delivers and traffic control systems Compared to traditional communication systems, Sensor nodes in WVSN operate under resource constrains such as power supply and transmission bandwidth The main object of this paper as to studs the resource allocation of a wireless sensor node and improve the system performance, especial the video distortion lore specifically, by taking into account the relations between separated modules on a sensor node, we build a comprehensive power-rate-distortion (Prd) framework for WVSN optimization Based on this framework, we address the problem of power allocation between video encoder module and wireless transmission module on the node to achieve the optimal reconstructed video quality under power and rate constraints

关键词： Power consumption resource allocation wireless sensor networks rate-distortion

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Leveraging trusted network connect for secure connection of mobile devices to corporate networks 3rd

Leveraging trusted network connect for secure connection of ...

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3rd IFIP TC6 International conference on Wireless Communications and Information Technology for Developing Countries, WCITD 2010 and IFIP TC 6 International network of the Future conference, nf 2010 Held as Part of 21st IFIP World Computer Congress, WCC 2010

作者： Detken, Kai-Oliver Simo Fhom, Hervais Sethmann, Richard Diederich, Günther DECOIT GmbH Fahrenheitstraße 9 Bremen28359 Germany Fraunhofer Institute for Secure Information Technology Rheinstrasse 75 Darmstadt64295 Germany University of Applied Science of Bremen Flughafenallee 10 Bremen28199 Germany

ISBN: (纸本)9783642154751

The approach described in this paper is part of the German national research project VOGUE. VOGUE leverages trusted network connect concepts as a key to implement/design a holistic and vendor neutral network access system while addressing shortcomings of traditional network access control mechanisms. The rest of the paper is organized as follows: Section 2 provides the motivation that outlines the importance of validating mobile devices state of health before allowing access to the enterprise network and gives a brief overview of the background on Trusted network Connect (TNC). Furthermore, the section describes the security risks, challenges and requirements that are relevant to interoperable network access control and authorization. Next, we discuss in section 4 existing solutions and other industry standards and specifications that have had an influence on our work. The paper concludes with section 5. © IFIP International Federation for Information Processing 2010.

关键词： Authorization

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Predicting remaining useful life of rotating machinery based artificial neural network

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COMPUTERS & MATHEMATICS WITH APPLICATIONS 2010年第4期60卷 1078-1087页

作者： Mahamad, Abd Kadir Saon, Sharifah Hiyama, Takashi Kumamoto Univ Dept Comp Sci & Elect Engn Kumamoto 8608555 Japan Univ Tun Hussein Onn Malaysia Fac Elect & Elect Engn Parit Raja 86400 Johor Malaysia

Accurate remaining useful life (RUL) prediction of machines is important for condition based maintenance (CBM) to improve the reliability and cost of maintenance. This paper proposes artificial neural network (ANN) as a method to improve accurate RUL prediction of bearing failure. For this purpose, ANN model uses time and fitted measurements Weibull hazard rates of root mean square (RMS) and kurtosis from its present and previous points as input. Meanwhile, the normalized life percentage is selected as output. By doing that, the noise of a degradation signal from a target bearing can be minimized and the accuracy of prognosis system can be improved. The ANN RUL prediction uses FeedForward Neural network (FFNN) with Levenberg Marquardt of training algorithm. The results from the proposed method shows that better performance is achieved in order to predict bearing failure. (C) 2010 Elsevier Ltd. All rights reserved.

关键词： RUL ANN Bearing Prediction FFNN

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Computing a fuzzy shortest path in a network with mixed fuzzy arc lengths using α-cuts

Computing a fuzzy shortest path in a network with mixed fuzz...

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3rd Global conference on Power control optimization

作者： Tajdin, Ali Mahdavi, Iraj Mahdavi-Amiri, Nezam Sadeghpour-Gildeh, Bahram Mazandaran Univ Sci & Technol Dept Ind Engn Babol Sar Iran Sharif Univ Technol Fac Math Sci Tehran Iran Mazandaran Univ Dept Math & Stat Babol Sar Iran

We are concerned with the design of a model and an algorithm for computing a shortest path in a network having various types of fuzzy arc lengths. First, we develop a new technique for the addition of various fuzzy numbers in a path using alpha-cuts by proposing a linear least squares model to obtain membership functions for the considered additions. Then, using a recently proposed distance function for comparison of fuzzy numbers, we present a dynamic programming method for finding a shortest path in the network. Examples are worked out to illustrate the applicability of the proposed model. (C) 2010 Elsevier Ltd. All rights reserved.

关键词： Fuzzy numbers alpha-cut Distance function Shortest path Linear least squares Regression Dynamic programming

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Pattern recall analysis of the Hopfield neural network with a genetic algorithm

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COMPUTERS & MATHEMATICS WITH APPLICATIONS 2010年第4期60卷 1049-1057页

作者： Kumar, Somesh Singh, Manu Pratap Apeejay Inst Technol Sch Comp Sci Greater Noida Uttar Pradesh India Dr BR Ambedkar Univ Dept Comp Sci Inst Comp & Informat Sci Agra Uttar Pradesh India

This paper describes the implementation of a genetic algorithm to evolve the population of weight matrices for storing and recalling the patterns in a Hopfield type neural network model. In the Hopfield type neural network of associative memory, the appropriate arrangement of synaptic weights provides an associative function in the network. The energy function associated with the stable state of this model represents the appropriate storage of the input patterns. The aim is to obtain the optimal weight matrix for efficient recall of any prototype input pattern. For this, we explore the population generation technique (mutation and elitism), crossover and the fitness evaluation function for generating the new population of the weight matrices. This process continues until the selection of the last weight matrix or matrices has been performed. The experiments incorporate a neural network trained with multiple numbers of patterns using the Hebbian learning rule. In most cases, the recalling of patterns using a genetic algorithm seems to give better results than the conventional recalling with the Hebbian rule. The simulated results suggest that the genetic algorithm is the better searching technique for recalling noisy prototype input patterns. (C) 2010 Elsevier Ltd. All rights reserved.

关键词： Hopfield neural network model Hebbian learning rule Genetic algorithm Pattern recalling Population generation technique

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The research on optimal control method of missiles' flight based on variable calculus

The research on optimal control method of missiles' flight b...

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International conference on Intelligent network and Intelligent Systems

作者： Yuchun, Zhang Yongqiang, Zhang School of Science Shenyang Ligong University Shenyang China Xingtai Mechanical Roller Ltd. Zhonggang Group Xingtai China

ISBN: (纸本)9780769542492

To meet the requirements of the tactical targets, in the progress of the missiles' flight, we often give the related parameters a range to make the targets to extreme. In this paper, we use variable Calculus to learn about the variation of the deflection in missiles' flight trajectory and the method that can make the missiles reach a certain height in the shortest time. Then with the help of the software - MATLAB, we can get the optimal solution to achieve interceptions and strikes basing on the optimal method in math. It is meaningful for the application of optimization theory in missiles' control. © 2010 IEEE.

关键词： Calculations

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RETRACTED ARTICLE: An improved tabu optimization approach for workflow scheduling

RETRACTED ARTICLE: An improved tabu optimization approach fo...

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作者： Xu, Zhan Wu, Gang Wang, Jin Lin Liu, Lei Key Lab of Network Communication System and Control USTC Chinese Academy of Sciences Hefei China National Network New Media Engineering Research Center Institute of Acoustics Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781424455386

Directed Acyclic Graph (DAG) is a nature way of workflow description. One of the most important and challenging problems in the DAG workflow field is the QoS-constrained scheduling problem with the aim to minimize the cost. This paper proposes a new algorithm to tackle this problem. The algorithm proposed is based on tabu search and make some improvements. Subject to the deadline of the workflow, this algorithm has a lower execution cost than other existing algorithms. Simulation results prove the effectiveness and feasibility of the algorithm. © 2010 IEEE.

关键词： Directed graphs

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Study of reversible information hiding scheme based on CArdBAL2 and DCT

Study of reversible information hiding scheme based on CARDB...

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2010 3rd IEEE International conference on Broadband network and Multimedia Technology, IC-BNMT2010

作者： Zhang, Tao Ren, Shuai Mu, Dejun Hu, Wei Zhang, Degang Department of Automatic Control Northwestern Polytechnical University Xi'an China School of Information Engineering Chang'an University Xi'an China

ISBN: (纸本)9781424467709

Taking advantage of the feature that the energy of the image would gather and spread on four components (LL2, LH2, HL2 and HH2) in the subimage after first-order CArdBAL2 multi-wavelet transform, propose an Information Hiding Algorithm based on CArdBAL2 transform and DCT. According to the algorithm, LL2 is embedding module of robust parameters (odd-even verification data, scrambling optimization parameters and Hash value of information). Embed hiding Information in LH 2 and HL2 with RAID4 and contrast detection data in HHz. Choose different DCT coefficient interval in LL2, LH2 and HL2. In aspect of information processing, using Logistic map and optimistic algorithm, improve the consistence of the embedded data bits' order and the character of the sub-image. The algorithm can increase invisibility and robustness separately by 2.19% and 30.92% averagely. The algorithm has an obvious advantage against cutting. Its sensitivity of image tampering can reach to 98% or more and it has an excellent ability against steganalysis. © 2010 IEEE.

关键词： Genetic algorithms

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Predicting remaining useful life of rotating machinery based artificial neural network

Predicting remaining useful life of rotating machinery based...

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3rd Global conference on Power control optimization

关键词： RUL ANN Bearing Prediction FFNN

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Torque Analysis and Shape optimization of Electromagnetic Clutch

Torque Analysis and Shape Optimization of Electromagnetic Cl...

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3rd International conference on Engineering and Technologies and Ceeusro (ICETC 2009)

作者： Piao, C. H. Huang, Z. Y. Wang, J. Cho, C. D. Chongqing Univ Minist Educ Key Lab Network Control Tech & Intelligent Instru P&T Chongqing 400065 Peoples R China Chongqing Univ Posts & Telecommun Res Ctr Energy Elect Chongqing Peoples R China Inha Univ Dept Mech Engn Incheon 402751 South Korea

ISBN: (纸本)087849300X

This paper is devoted to the static friction torque of electromagnetic clutch. The torque maximization is also investigated by optimizing the geometrical shape of armature. For the purpose of designing and optimizing electromagnetic clutch, torque prediction is a very important factor. We construct an axi-symmetric FEM model to analyze static friction torque and use a torque tester to evaluate real torque. In this work, analytically predicted torque is compared with the experimental one to discuss the rationality of numerical process. The analytical result agrees well with experimental data, which proves the validity of the mathematical process. Through optimization of the shape of armature, we also improve the static torque of electromagnetic clutch about 30%.

关键词： Electromagnetic Clutch optimization Torque Magnetic field FEM

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