路径测试设计用例的设计与分析

探讨了组合数学法和BRO策略法两种不同的设计测试用例的方法在路径测试中的应用。     

解平行四边形板弯曲问题的二元B样条有限元法

将文献［１］以二元二次Ｂ样条函数为基底,求解矩形薄板弯曲问题的二元Ｂ样条有限元的方法推广到用于求解平行四边形板弯曲问题．结果表明：该方法系数矩阵每行的非零元仅２１个,相对于朱明权和ＣｈｕｉＣ．Ｋ．等的张量积型样条有限元方法,计算量与存贮量都大大节约．     

产品设计的形式审美特征及成因

产品设计的形式具有使用的审美双重特征，其形式审美特征显示出越来越重要的作用，是产品的高品质性能的外在体现。章对构成产品的形式审美特征的技术因素(材料、结构、工艺等)，艺术因素(形式美法则)以及社会环境因素等进行了分析，有助于在设计中提高对产品形式审美特征的把握，发挥形式审美特征的作用。     

操盘手的挤出效应

高级别直销商对低级别经销商的“挤出效应” 1．从上向下挤出笔者提到过累计级差制的“格雷欣法则”——在累计级差制下，容易出现寄生的高级别直销商“挤掉”有能力的下属高级别直销商，让下属成熟部门直接归自己所有，从而一夜之间多出好几个成熟下级部门，使自己级别猛然上升的逆选择现象——“寄生挤出效应”。     

用三维CAD绘图技术求空间汇交力系

借助于三维CAD工程绘图技术，本文介绍了采用图解法求解空间汇交力系平衡问题的应用实例。     

多重模糊推理情形下的CRIP法

该文对模糊专家系统，模糊决策支持系统和模糊控制系统中常用的Zadeh的模糊推理合成法则CRI进行了推广，基于V^λ算子，该文提出了多重模糊推理情形下的带参数的模糊推理合成法则（简称CRIP法），它克服了传统的CRI法则的若干不足之处，能在极弱条件下满足假言推理，拒取式推理，具有推理的逼近性，通过参数的调整，CRIP法具有推理的灵活性和准确性，该文给出了参数的具体取值方法。     

Shakedown Analysis of 3-D Structures Using the Boundary Element Method Based on the Static Theorem

The static shakedown theorem was reformulated for the boundary element method (BEM) rather than the finite element method with Melan‘s theorem, then used to develop a numerical solution procedure for shakedown analysis. The self-equilibrium stress field was constructed by a linear combination of several basis self-equilibrium stress fields with undetermined parameters. These basis self-equilibrium stress fields were expressed as elastic responses of the body to imposed permanent strains obtained using a 3-D BEM elastic-plastic incremental analysis. The lower bound for the shakedown load was obtained from a series of nonlinear mathematical programming problems solved using the Complex method. Numerical examples verified the precision of the present method.     

Design and Implementation of a Novel Algorithm for Iterative Decoding of Product Codes

A novel product code iterative decoding algorithm and its high speed implementation scheme are proposed in this paper.Based on partial combination of selected columns of check matrix,the reduced-complexity syndrome decoding method is proposed to decode sub-codes of product code and deliver soft output information.So iterative decoding of product codes is possible.The fast sorting algorithm and a look-up method are proposed for high speed implementation of this algo-rithm.Compared to the conventional weighing iterative algorithm,the proposed algorithm has lower complexity while offering better performance,which is demonstrated by simulations and implementation analysis.The implementation scheme and verilog HDL simulation show that it is feasible to achieve high speed decoding with the proposed algorithm.     

用HFC 32／HFC 125／HFC 134a替代HCFC 22的理论计算与分析

选用ＣＳＤ状态方程、合适的混合法则及其相互作用系数，对替代ＨＣＦＣ－２２的三元混合工质ＨＦＣ－３２／ＨＦＣ－１２５／ＨＦＣ－１３４ａ进行了热力性质计算误差分析表明计算结果达到一定的精度，在此基础上进行了理论循环计算、分析和比较．所有计算均编制程序在计算机上进行     

等价无穷小的代换法则

给出了等价无穷小代换法则的传递法则与幂法则，常用的等价无穷小一览表．举例说明其有趣简捷的应用