In the process of evaluating,the weights of indicators are firstly determined by AHP and Delphi methods;and the values of indicators are normalized by grey correlative coefficient method.A suit of means were put forwa...In the process of evaluating,the weights of indicators are firstly determined by AHP and Delphi methods;and the values of indicators are normalized by grey correlative coefficient method.A suit of means were put forward,by which a qualitative and quantitative evaluation indicator system suitable for the situation of China and uncertainties can be established.Both idiographic and operable methods and process were presented.Following the principle of elasticity,hiberarchy and maneuverability,a three-layer evaluation indicator system was established by AHP in Jiuyi ecological residential community,which includes 5 subsystems and 24 indicatiors.The weights of indicators are measured by AHP and expert estimate and their best indicators values up to par were determined by fuzzy mathematics and optimization.The whole evaluation indicator system not only has an active and practical effect on estimating ecological residential community,but also guides ecological residential community planning.展开更多
On the basis of expert questionnaire and the relevant specification,multi-factors influencing weight matrix was constructed by Analytic Hierarchy Process(AHP)improved in transfer matrix algorithm,and influential fact...On the basis of expert questionnaire and the relevant specification,multi-factors influencing weight matrix was constructed by Analytic Hierarchy Process(AHP)improved in transfer matrix algorithm,and influential factors were fuzzy classified to construct the fuzzy evaluation matrix by using trapezoidal fuzzy membership function.Fuzzy evaluation analysis was carried out through multistage fuzzy comprehensive evaluation method,and verified in combination with engineering construction condition of shallow buried tunnel with large span of Zhongshan Park Station in Qingdao Metro,and four kinds of risk control schemes were established and compared on the analysis of tunnel construction risk.Results show that the model was feasible and the improved construction scheme was very effective to reduce the construction risk.展开更多
为比较各种船舶控制算法的性能,利用船舶智能操控(Ship Intelligent Handling and Control,SIHC)仿真平台和MATLAB软件,分别从航向跟踪、航向保持两个方面对该平台集成的普通PID自动舵、模糊自整定PID自动舵进行性能评判及控制性能测试...为比较各种船舶控制算法的性能,利用船舶智能操控(Ship Intelligent Handling and Control,SIHC)仿真平台和MATLAB软件,分别从航向跟踪、航向保持两个方面对该平台集成的普通PID自动舵、模糊自整定PID自动舵进行性能评判及控制性能测试.从测试结果可知,在航向保持方面,就一般船型而言,模糊自整定PID自动舵的性能优于普通PID自动舵;在航向跟踪方面,普通PID自动舵和模糊自整定PID自动舵的控制性能近乎一致,在某些环境或船型下,普通PID自动舵稍胜一筹.展开更多
基金Supported by Hunan Provincial Science and Technology Program(05SK3082,2007SK4012)Natural Science Foundation-funded Project(06JJ5147)
文摘In the process of evaluating,the weights of indicators are firstly determined by AHP and Delphi methods;and the values of indicators are normalized by grey correlative coefficient method.A suit of means were put forward,by which a qualitative and quantitative evaluation indicator system suitable for the situation of China and uncertainties can be established.Both idiographic and operable methods and process were presented.Following the principle of elasticity,hiberarchy and maneuverability,a three-layer evaluation indicator system was established by AHP in Jiuyi ecological residential community,which includes 5 subsystems and 24 indicatiors.The weights of indicators are measured by AHP and expert estimate and their best indicators values up to par were determined by fuzzy mathematics and optimization.The whole evaluation indicator system not only has an active and practical effect on estimating ecological residential community,but also guides ecological residential community planning.
基金This Project is supported by the Opening Project Fund of Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation(No.CDPM2013KF05)the National Natural Science Foundation of China(Grant No.51174128)the Specialized Research Fund for the Doctoral Program of Higher Education of China(Grant No.20123718110007).
文摘On the basis of expert questionnaire and the relevant specification,multi-factors influencing weight matrix was constructed by Analytic Hierarchy Process(AHP)improved in transfer matrix algorithm,and influential factors were fuzzy classified to construct the fuzzy evaluation matrix by using trapezoidal fuzzy membership function.Fuzzy evaluation analysis was carried out through multistage fuzzy comprehensive evaluation method,and verified in combination with engineering construction condition of shallow buried tunnel with large span of Zhongshan Park Station in Qingdao Metro,and four kinds of risk control schemes were established and compared on the analysis of tunnel construction risk.Results show that the model was feasible and the improved construction scheme was very effective to reduce the construction risk.
文摘为比较各种船舶控制算法的性能,利用船舶智能操控(Ship Intelligent Handling and Control,SIHC)仿真平台和MATLAB软件,分别从航向跟踪、航向保持两个方面对该平台集成的普通PID自动舵、模糊自整定PID自动舵进行性能评判及控制性能测试.从测试结果可知,在航向保持方面,就一般船型而言,模糊自整定PID自动舵的性能优于普通PID自动舵;在航向跟踪方面,普通PID自动舵和模糊自整定PID自动舵的控制性能近乎一致,在某些环境或船型下,普通PID自动舵稍胜一筹.
