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检索条件"任意字段=2012 IEEE International Conference on Computer Science and Automation Engineering（CSAE 2012）"

共 3194 条记录，以下是561-570 订阅

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Two-stage deadlock prevention policy based on resource-transition circuits

Two-stage deadlock prevention policy based on resource-trans...

引用

2012 ieee international conference on automation science and engineering: Green automation Toward a Sustainable Society, CASE 2012

作者： Han, Libin Xing, Keyi Zhou, Mengchu Liu, Huixia Wang, Feng State Key Laboratory for Manufacturing Systems Engineering Systems Engineering Institute Xi'An Jiaotong University Xi'an 710049 China Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ 07102 United States

ISBN: (纸本)9781467304283

This paper presents a suboptimal deadlock controller for a class of manufacturing systems of sequential processes with resources, where deadlocks are characterized by saturated maximal perfect resource-transition circuits (MPRT-circuits), and the controller consists of two parts. In the maximally permissive Petri net controller, which avoids all MPRT-circuits being saturated, some control places are redundant. By deleting all redundant control places and their related arcs, the first part of our controller, non-redundant controller, is obtained. In the controlled system with the non-redundant controller, deadlocks may occur if the system contains crucial resources. Then we propose for the first time the concept of the maximal perfect control-transition circuits (MPCT-circuits), which is used to characterize the deadlock in the controlled system with the non-redundant controller. When deadlock occurs under a reachable marking, some MPCT-circuits in the controlled system become empty. The Petri net controller to prevent all MPCT-circuits from being empty is the second part of our controller. It is proved that the controller consisting of two parts can guarantee the liveness of the controlled system. © 2012 ieee.

关键词： Controllers

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An efficient algorithm of solving the optimal discriminant vectors

An efficient algorithm of solving the optimal discriminant v...

引用

ieee international conference on computer science and automation engineering (csae)

作者： Hong-zhou He Ming-tian Zhou School of Computer Science and Engineering University of Electronic Science & Technology of China Chengdu China

In view of the limitations of traditional uncorrelated Linear Discriminant Analysis (uLDA) of failure with singular within-scatter matrix and computationally expensive in solving the optimal discriminant vectors for a large and high-dimension dataset, an equivalent uLDA to Linear Discriminant Analysis (LDA) and a algorithm of uLDA based on generalized singular value decomposition is proposed to simply the computation and get over the singularity problem. The classification experimental results of four image and text datasets demonstrate the superiority of our algorithm over other traditional algorithms.

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Robust non-fragile guaranteed cost control for the looper system of hot strip rolling mill

Robust non-fragile guaranteed cost control for the looper sy...

引用

2012 ieee 3rd international conference on Software engineering and Service science, ICSESS 2012

作者： Fu, Xingjian Wang, Qiaoling Liu, Xiaohe Li, Yingchun School of Automation Beijing Information Science and Technology University Beijing China Department of Electronics Engineering North China Institute of Astronautic Engineering Langfang Hebei Province China

ISBN: (纸本)9781467320054

Looper system of hot strip rolling mill is electro mechanic and hydraulic pressure system. Because of dynamic parameters uncertainties and complex structure, it's very difficult to setup the model. However, its control performance has directly relative to the strip product quality. In this paper, robust non-fragile guaranteed cost controller is designed for looper system. For a class of uncertain discrete system, based on Lyapunov stability theory and linear matrix inequalities, a sufficient condition is presented for the existence of robust non-fragile guaranteed cost controller. Furthermore, this solvable approach for guaranteed cost controller is given by the feasible of linear matrix inequalities. This non-fragile guaranteed cost controller is applied to looper systems of hot strip rolling mill. Simulation results show the efficiency of the designing method. © 2012 ieee.

关键词： Hot rolling

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A hybrid genetic algorithm for resource-constrained multi-project scheduling problem with resource transfer time

A hybrid genetic algorithm for resource-constrained multi-pr...

引用

2012 ieee international conference on automation science and engineering: Green automation Toward a Sustainable Society, CASE 2012

作者： Cai, Zhicheng Li, Xiaoping School of Computer Science and Engineering Southeast University 211189 Nanjing China

ISBN: (纸本)9781467304283

The RCMPSPTT (resource-constrained multi-project scheduling problem with resource transfer time) problem usually exists in distributed collaborative manufacturing systems, in which scarce resources are shared by different projects dispersed in distributed physical places. Resources are needed to be transferred among different projects with non-neglectable time. In this paper, a hybrid genetic algorithm is proposed for the considered problem. Besides standard operators, EPS (Elite population based dual Population Structure) and VNS (Variable Neighborhood Search) operators are introduced for both diversification and intensification consideration to improve effectiveness. The EPS keeps the elite solutions found during the search and they are updated using a similarity strategy. The VNS generates new solutions by a proposed local search strategy. Experiments show that 26.1% has been improved on solutions by DGAVNS compared with an existing priority rule based heuristic algorithm. © 2012 ieee.

关键词： Heuristic algorithms

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A cooperative localization algorithm for mobile sensor networks

A cooperative localization algorithm for mobile sensor netwo...

引用

2012 ieee international conference on automation science and engineering: Green automation Toward a Sustainable Society, CASE 2012

作者： Suh, Junghun You, Seungil Oh, Songhwai School of Electrical Engineering and Computer Science and ASRI Seoul National University Seoul 151-744 Korea Republic of Control and Dynamic Systems California Institute of Technology Pasadena CA 91125 United States

ISBN: (纸本)9781467304283

In this paper, we propose a cooperative localization algorithm for mobile sensor networks with camera sensors to operate under GPS denied areas or indoor environments. Mobile robots are partitioned into two groups. One group moves within the field of views of remaining stationary robots. The moving robots are tracked by stationary robots and their trajectories are used as spatio-temporal features. From these spatio-temporal features, relative poses of robots are computed using multi-view geometry. In order to provide the poses of robots with respect to the reference coordinate system, robots take a turn and at least one robot is stationed as robots move across the field of interest. By taking the advantage of the multi-agent system, we can reliably localize robots over time as they perform a group task. In experiment, we demonstrate that the proposed method consistently achieves less than 1cm of localization error for trajectories of length less than 100cm and less than 0.34% of localization error for longer trajectories of length between 725cm and 769cm using an inexpensive off-the-shelf robotic platform. © 2012 ieee.

关键词： Sensor networks

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One of the image correction algorithms of QR code and its implementation based on wavelet transform

One of the image correction algorithms of QR code and its im...

引用

2012 ieee 3rd international conference on Software engineering and Service science, ICSESS 2012

作者： Jin, Chun Yuan, Jianghong Li, Leilei Chen, Eryang Han, Gang Tang, Tao School of Communication and Information Engineering Chongqing University of Posts and Telecommunications 400065 Chongqing China Chongqing Broadcasting and TV Group 400039 Chongqing China School of Automation Engineering University of Electronic Science and Technology of China 611731 Chengdu Sichuan Province China Chongqing Guangtong Industry Co. Ltd. 400039 Chongqing China Jiangbei Power Supply Bureau of Chongqing Electric Power Company 401147 Chongqing China

ISBN: (纸本)9781467320054

To improve the operation speed and accuracy of two-dimensional barcodes image-correction, this paper proposed a QR code edge detection method based on wavelet transform. Firstly, we take advantage of the characteristics of multi-resolution analysis of wavelet transformation to denoise the QR code image. And then multi-level wavelet decomposition is done to the denoised image, from which we can obtain the wavelet coefficient at all levels. And finally, we refine the edge processing to get the target image. Tests result shows that the algorithm can not only obtain good edge detection effect, but also greatly simplify the calculation. What's more, it can reduce the noise effectively. © 2012 ieee.

关键词： Edge detection

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Research on vertical relation arrangement of aviation fuel supply chain

Research on vertical relation arrangement of aviation fuel s...

引用

2012 ieee 3rd international conference on Software engineering and Service science, ICSESS 2012

作者： Ding, Yong Wang, Guankai Li, Lei School of Economics and Management Civil Aviation University of China Tianjin China Institute for International Economics of Nankai University School of Economics Nankai University Nankai University Tianjin China

ISBN: (纸本)9781467320054

According to the China's aviation fuel market, the article constructs a supply chain model including three upstream firms and three downstream firms to solve China's aviation fuel security. Then, we analyze the merger game among the upstream and downstream manufacturers in the condition of scarce supply. Results show that the vertical relation of aviation fuel supply chain will be adjusted and the airlines will merge with the manufacturers to guarantee its supply. However, the strength of policy barriers decides the degree of integration. The degree of integration will be lower when the policy barriers getting stronger. © 2012 ieee.

关键词： Supply chains

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Genetic algorithms and its application in software test data generation

Genetic algorithms and its application in software test data...

引用

2012 international conference on computer science and Electronics engineering, ICCSEE 2012

作者： Wang, Lijuan Zhai, Yue Hou, Hongfeng Information Science Department Dalian Institute of Science and Technology Dalian Liaoning China

ISBN: (纸本)9780769546476

Test data generation is a key part in software test area and it is of significance to realize the automation of software testing. The main contribution of this paper lies in that a practical model, which utilizes genetic algorithms as searching policy to generate software structural test data, is proposed. To achieve higher performance, such issues as encoding strategy, algorithms operator evolution, evaluation function construction and instrumentation are addressed in detail, a new method of initialization of population is introduced in order to make the initial population has higher adaptability, and much emphasis is put on algorithms operator evolution, which is a key factor which can highly affect algorithms efficiency, finally, the results show that the application of genetic algorithms in software test data generation is more efficient compared with other methods. © 2012 ieee.

关键词： Genetic algorithms

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Bandwidth and Power Allocation for Gaussian Orthogonal Untrusted Relay Channel

Bandwidth and Power Allocation for Gaussian Orthogonal Untru...

引用

2012 ieee 11th international conference on Signal Processing(ICSP 2012)

作者： Deng Zhixiang Yu Zhangju Wang Baoyun College of Telecommunications & Information Engineering Nanjing Univ.of Posts and Telecommunications College of Computer and Information Engineering Hohai University College of Automation Nanjing University of Posts and Telecommunications

ISBN: (纸本)9781467321969

The aussian orthogonal untrusted relay channel is investigated in this paper. We assume that there is an eavesdropper at the relay node which can access everything that the relay node knows. The source node transmits signals to the relay node and the destination node in channel 1, the relay node transmits signals to destination node in channel 2, channel 1 and channel 2 are orthogonal. The achievable secrecy rate is derived firstly. Under the limit of the total channel resource, the maximum achievable secrecy rate is obtained through optimizing the resource allocation. Of the Gaussian orthogonal untrusted relay channel, there exists a unique optimum bandwidth or power to achieve the maximum secrecy rate and a higher secrecy rate can be achieved using this optimal resource allocation strategy than the maximum resource allocation strategy.

关键词： wiretap channel secrecy rate resource allocation untrusted relay

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The influence of word normalization in English document clustering

The influence of word normalization in English document clus...

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ieee international conference on computer science and automation engineering (csae)

作者： Pu Han Si Shen Dongbo Wang Yanyun Liu School of Information Management Nanjing University Nanjing China Institute of Command Automation The PLA University of Technology & Science Nanjing China

Stemming or lemmatization method is a key step in English document processing. Based on three clustering algorithms and two evaluation functions, the paper makes a comprehensive study about two stemming algorithms and one lemmatization algorithm. According to the experimental result, it shows that the performance is not remarkable, compared with Snowball stemmer and Stanford lemmatization, Porter stemmer can make a better performance in entropy and purity.

关键词： Clustering algorithms Entropy Classification algorithms Dictionaries Partitioning algorithms Educational institutions

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