通过关键词查论文: Comparing

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作者: Shu Xun Chen
摘要: A design synthesis technique based on sensitivity for Micro-Electro-Mechanical Systems (MEMS) proposed. This new technique can be called Sensitivity-Based Direct Solution Algorithm (DSA) of design synthesis for MEMS with expected performance. Design synthesis with expected performance is regarded as a reverse problem of MEMS analysis. Behavior equation group can be educed from analysis equations. This behavior equation group can be solved using any solution algorithm of non-linear equation group. Newton Iteration Method based on sensitivity is adopted. Comparing with Genetic Optimization Algorithm (GA) , computational workload of DSA is greatly decreased.
637
作者: Jian Xun Ma, Piers Carlson, Ling Ling Zhang
摘要: By comparing the Chinese CECS 146:2003, the American ACI 440.2R-02 and the Canadian ISIS Design manual No.4, discussion is extended in terms of ways to improve the performance of concrete structures. Although the Chinese code treats only carbon fibers, the basic concepts for FRP strengthening are common to all three examined design. However, safety factors differ because of the different backgrounds and application experience. The ACI 440.2R-02 goes into great detail concerning FRP materials and utilization where creep and fatigue are important factors. The ISIS manual No.4 gives many design examples and promotes the use of FRP through easy-to-use design charts. The CECS 146:2003 also mentions applications for seismic resistance. Further improvement in the area of design stipulations for use of FRP laminates will include standardization of safety factors, and also promotion of these guides for a wide use around the industry.
169
作者: Qing Wu Meng, Lu Meng
摘要: The coordinate transformation models based on least square method and total least square are built and discussed. The least square model only includes the errors of observation vectors, the total least square model simultaneously takes into consideration to the errors of observation vectors and the errors of coefficient matrix. The both models are verified and compared in experiment. The experimental results showed that the model of total least square is more in line with actual, and more reasonable than by least square theoretically, and the coordinate transformation solution result of total least square with least square is more near.
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作者: Yuri M. Baron, S.L. Ko, Jung Il Park
摘要: In this paper, the new technique involving comparison and optimization of conditions for Magnetic Abrasive Finishing (MAF) is suggested, taking into account the basic laws stated for process MAF. The formulas for the calculation of the criteria for optimization are created when the process MAF is used for polishing, removal of burrs, and other purposes. The application of the technique is shown in an experiment on the optimization conditions for the removal of burrs after drilling using the MAF method. The technique can be used after standards for this process are developed.
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