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The Customer Requirements Analysis Method of Engineering Products Based on Multiple Preference Information
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作者 Guo Mao 《Proceedings of Business and Economic Studies》 2024年第1期204-209,共6页
To effectively evaluate the fuzziness of the market environment in product planning,a customer requirements analysis method based on multiple preference information is proposed.Firstly,decision-makers use a preferred ... To effectively evaluate the fuzziness of the market environment in product planning,a customer requirements analysis method based on multiple preference information is proposed.Firstly,decision-makers use a preferred information form to evaluate the importance of each customer requirement.Secondly,a transfer function is employed to unify various forms of preference information into a fuzzy complementary judgment matrix.The ranking vector is then calculated using row and normalization methods,and the initial importance of customer requirements is obtained by aggregating the weights of decision members.Finally,the correction coefficients of initial importance and each demand are synthesized,and the importance of customer requirements is determined through normalization.The development example of the PE jaw crusher demonstrates the effectiveness and feasibility of the proposed method. 展开更多
关键词 Product planning Customer requirements importance ratings Multi-format information
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Fold catastrophe model of dynamic pillar failure in asymmetric mining 被引量:6
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作者 PAN Yue LI Ai-wu QI Yun-song 《Mining Science and Technology》 EI CAS 2009年第1期49-57,共9页
A rock burst disaster not only destroys the pit facilities and results in economic loss but it also threatens the life of the miners. Pillar rock burst has a higher frequency of occurrence in the pit compared to other... A rock burst disaster not only destroys the pit facilities and results in economic loss but it also threatens the life of the miners. Pillar rock burst has a higher frequency of occurrence in the pit compared to other kinds of rock burst. Understanding the cause, magnitude and prevention of pillar rock burst is a significant undertaking. Equations describing the bending moment and displacement of the rock beam in asymmetric mining have been deduced for simplified asymmetric beam-pillar systems. Using the symbolic operation software MAPLE 9.5 a catastrophe model of the dynamic failure of an asymmetric rock-beam pillar system has been established. The differential form of the total potential function deduced from the law of conservation of energy was used for this deduction. The critical conditions and the initial and final positions of the pillar during failure have been given in analytical form. The amount of elastic energy released by the rock beam at the instant of failure is determined as well as. A diagrammatic form showing the pillar failure was plotted using MATLAB software. This plot contains a wealth of information and is important for understanding the behavior during each deformation phase of the rock-beam pillar system. The graphic also aids in distinguishing the equivalent stiffness of the rock beam in different directions. 展开更多
关键词 PILLAR fold catastrophe asymmetric mining energy importing rate energy releasing amount.
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Fold catastrophe model of strike-slip fault earthquake
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作者 潘岳 李爱武 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2010年第3期349-362,共14页
Using a differential form of the potential energy function and taking the effect of work applied by external force in far field into account, the mechanism of strike-slip fault earthquake is analyzed. The research ind... Using a differential form of the potential energy function and taking the effect of work applied by external force in far field into account, the mechanism of strike-slip fault earthquake is analyzed. The research indicates that each characteristic displayed with a fold catastrophe model in the catastrophe theory corresPonds to a specific primary characteristic of the strike-slip fault earthquake. The fold catastrophe can describe the positions of starting and end points of a fault failure and the distance of fault dislocation. These include the description of stability of the surrounding rock-fault system before and after the earthquake. Two different illustrations about elastic energy releasing amount of the surrounding rock with the fault failure are shown with the primary characteristics mutually demonstrated. The intensity of strike-slip fault earthquake is related to the surrounding rock press and the stiffness ratio of surrounding rock and fault. The larger the surrounding rock press, the smaller the stiffness ratio. The larger the included angle between the tangential stress axis and the causative fault surface, the stronger the earthquake. 展开更多
关键词 fault earthquake fold catastrophe model end point of failure failure criterion energy import rate elastic energy releasing amount
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General Administration of Customs Lowers Import Tariff Rate of Entry Passengers' Baggages and Articles
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《China's Foreign Trade》 2002年第2期55-55,共1页
关键词 Baggages and Articles General Administration of Customs Lowers Import Tariff Rate of Entry Passengers RATE
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Tentative tariff rate for partial import and export products adjusted
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《China Rare Earth Information》 2006年第12期3-3,共1页
The tentative tariff rate for partial import and export products was adjusted since November 1^(st) of 2006.Total 58 imported commodities will be imposed lower tentative
关键词 RATE Tentative tariff rate for partial import and export products adjusted
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Modified reward function on abstract features in inverse reinforcement learning 被引量:1
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作者 Shen-yi CHEN Hui QIAN Jia FAN Zhuo-jun JIN Miao-liang ZHU 《Journal of Zhejiang University-Science C(Computers and Electronics)》 SCIE EI 2010年第9期718-723,共6页
We improve inverse reinforcement learning(IRL) by applying dimension reduction methods to automatically extract Abstract features from human-demonstrated policies,to deal with the cases where features are either unkno... We improve inverse reinforcement learning(IRL) by applying dimension reduction methods to automatically extract Abstract features from human-demonstrated policies,to deal with the cases where features are either unknown or numerous.The importance rating of each abstract feature is incorporated into the reward function.Simulation is performed on a task of driving in a five-lane highway,where the controlled car has the largest fixed speed among all the cars.Performance is almost 10.6% better on average with than without importance ratings. 展开更多
关键词 importance rating Abstract feature Feature extraction Inverse reinforcement learning(IRL) Markov decision process(MDP)
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