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Multiple-Constraint-Aware RWA Algorithms Based on a comprehensive evaluation model:Use in Wavelength-Switched Optical Networks

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ZTE Communications 2012年第3期10卷 55-61页

作者： Hui Yang YongliZhao Shanguo Huang Dajiang Wang Xuping Cao Xuefeng Lin State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications Beijing 100876 China ZTE Corporation Shenzhen 518057 China

Because of explosive growth in Internet traffic and high complexity of heterogeneous networks, improving the routing and wavelength assignment （RWA） algorithm in underlying optical networks has become very important. Where there are multiple links between different the node pairs, a traditional wavelength-assignment algorithm may be invalid for a wavelength-switched optical networks （WSON） that has directional blocking constraints. Also, impairments in network nodes and subsequent degradation of optical signals may cause modulation failure in the optical network. In this paper, we propose an RWA algorithm based on a novel evaluation model for a WSQN that has multiple constraints. The algorithm includes comprehensive evaluation model （CEM） and directional blocking constraint RWA based on CEM （DB-RWA）. Diverse constraints are abstracted into various constraint conditions in order to better assign routing and wavelength. We propose using the novel CEM to optimize routing according to an assessed value of constraints on transmission performance. This eliminates the effects of physical transmission impairments in a WSON. DB-RWA based on CEM abstracts directional blocking conditions in multiple links between network nodes into directional blocking constraints. It also satisfies rigorous network specifications and provides flexibility, scalability, and first-fit rate for the backbone, especially in multiple links between WSON nodes.

关键词： RWA WSON multiple links between nodes pair directionalblocking constraint comprehensive evaluation model

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A Study on comprehensive evaluation model of Product Producing Process Capability

A Study on Comprehensive Evaluation Model of Product Produci...

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The 8th International Conference on Reliability,Maintainability and Safety(ICRMS 2009)

作者： Weiping Mu Yihai He Wenbing Chang Zhao Ma Department of System Engineering of Engineering Technology Beijing University of Aeronautics and Astronautics Beijing China

＜正＞Process Capability Index is a widely used tool for quality *** methods of Process Capability evaluation are limited to machining *** are no suitable methods for comprehensive evaluation of total producing process *** this paper,a comprehensive evaluation model of product producing process capability is proposed,so that data of all stages can be fully *** for machining capability evaluation are extended to purchasing,assembling and delivery inspection and an index system of producing process capability evaluation is *** addition,analytic hierarchy process is used to determine the weight of each stage and then producing process capability index is achieved by summing. Finally,an application example is analyzed to show that the entire producing capability can be evaluated *** should play an important part in monitoring and improving producing process capability.

关键词： Producing Process Quality evaluation Process Capability Index comprehensive evaluation model

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comprehensive evaluation methods for dam service status

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Science China(Technological Sciences) 2012年第11期55卷 2300-2312页

作者： WU ZhongRu XU Bo GU ChongShi LI ZhanChao State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai UniversityNanjing 210098China College of Water Conservancy and Hydropower Engineering Hohai UniversityNanjing 210098China National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety Hohai UniversityNanjing 210098China

More than 87000 dams have been built in China,and about one third of them are risky projects.A number of high and ultra-high dams are being constructed in China's western *** current dam construction practice tends to focus on socio-economic benefits and neglect the environment and ***,periodic examinations are intended to ensure the structural safety of *** paper proposes a general evaluation principle for dam *** principle stipulates that dam projects should have maximum socio-economic benefits and minimum negative effects on the environment and *** satisfy the general principle of mutual harmony,socio-economic benefits,dam safety,environment,and ecology are analyzed,and the evaluation methods for dam service status are ***,a fusion algorithm of interlayer assessment is proposed on the basis of evidence theory and the fuzzy comprehensive analysis ***,a comprehensive evaluation model is *** analysis shows that the proposed theories and methods can fulfill scientific assessment of the service status of dams.

关键词： dam service status assessment principles evaluation methods comprehensive evaluation model

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Study On comprehensive evaluation of Digitalized Human-Computer Interface On Set Pair Analysis

Study On Comprehensive Evaluation of Digitalized Human-Compu...

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2011 IEEE 12th International Conference on Computer-Aided Industrial Design & Conceptual Design

作者： NIU Yafeng School of Mechanical Engineering Southeast University Nanjing China XUE Chengqi School of Mechanical Engineering Southeast University Nanjing China

＜正＞For the comprehensive evaluation of Digitalized Human-Computer Interface,this paper proposes a new evaluation method on set pair *** quantitative description and analysis of the uncertain factors in the interface design evaluation schemes,we can accurately and objectively determine the merits of the interface design *** to the set pair analysis theory,we make use of the concept of identical discrepancy contrary connection degree,conducting a comprehensive consideration on certain and uncertain factors of the interface design schemes in the sight of the degree of identity,which can provide a more reasonable method for comprehensive evaluation of the interface design and avoid some drawbacks in the conventional method.

关键词： set pair analysis Digitalized Human-Computer Interface comprehensive evaluation model

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