查询词典 equivalence

The complementary variational principles are extened to two-medium region problems. The equivalence between variational problem and boundary value problem is proved.

将互补变分原理推广到包含两个区域的问题中，从数学上证明了变分问题与边值问题的等价性。

To solve this problem,the equivalence relation of rough set theory is replaced by an asymmetrical similar relation,and from this relation,an asymmetrical similar matrix is defined,then a new heuristic algorithm with less space complexity that require core and knowledge reduction based on asymmetrical similar matrix is proposed,and an example is given to confirm the validity of the algorithm.

用非对称相似关系代替粗糙集理论中的等价关系，定义了非对称相似差别矩阵，提出了基于非对称相似差别矩阵的高效求核和知识约简算法。该算法无需改变初始不完备信息系统的结构，能直接处理缺省数据。实验结果表明，新算法所获得的决策规则简洁、高效，与缺省值无关。

The algorithm use our proposed heuristic to do output grouping for complex problems, and thus the equivalence checking problem can be converted into some circuit SAT problems, circuit SAT solver was used to solve these sub-problems.

对那些具有较多输出的复杂电路，为共享结构信息从而提高验证速度，使用输出分组技术将那些共享较多内部结点的输出转化为一个子问题，从而验证问题可转化为一系列验证子问题。

The main problems researched in the dissertation and achievements are as follows: The dissertation explains the science background and the theoretical and actual meaning of the task. The progress and the problems of the flow imaging technique are briefly explained. The advantages of electrical capacitance tomography are discussed. The paper discusses the formation and operating principle of ECT, and builds up the definite mathematical model by detail theoretical analyse, and establishes the Finite Element Model of the system by changing the finite boundary value problem of ECT into equivalence variation problem according to variation principle. On the basis of the FEM of the system, the paper builds the finite element model of the capacitance sensitivity field distribution and programs its finite element simulation software and proves the validity of the FEM of the ECT from different aspects. With the FEM and the qualitative analyse of the effect of each structural parameter of the capacitance transducer on its capability, this paper optimizes the structural parameters of the capacitance transducer, and obviously improves its capability. The compare of the simulated result with the static experimental result shows that the error of them is less than 0.9%.

其主要研究内容包括：阐述课题研究的学术背景及其理论与实际意义，概括总结出流动层析成像技术的发展现状和存在的问题，指出电容层析成像技术的优点；讨论电容层析成像系统的组成及工作原理，进行详尽的理论分析，以变分原理为基础，将ECT的有限元边值问题转换为等价的变分问题，从而建立系统的有限元模型；在系统有限元模型的基础上，建立敏感场的数学模型，编制有限元的仿真软件，并从不同角度证明电容层析成像系统有限元模型的正确性；利用有限元模型，定性地分析电容传感器各结构参数对其性能的影响，并对传感器结构参数进行优化设计，使其性能得到明显的改善。8电极ECT系统的仿真和静态实验结果的比较表明，它们之间的相对误差小于0。

About 2.6%~27.1% high graders appeared the situations that suffer denominator or numerator control, while handling the problem of equivalence fraction of continuous quantity or discrete quantity.

在等值分数概念表现上，约有2.6﹪~27.1﹪的学童在处理连续量或离散量等值分数问题时，均出现受分母或分子控制的情形，用以判断分数值所表示的具体量。

The classic rough set theory is based on equivalence relation, but it is not able to handle the incomplete information system.

经典粗集理论以等价关系为基础，它们在处理不完备信息系统的时候存在一定的局限性。

The fuzzy cluster analysis based on fuzzy equivalence relation can be used to correct the optimization results.

因此，在进行各机架设定值计算时，制定最优的压下负荷分配方案，是十分重要的。

Information entropy of an equivalence relation has many regular and interesting properties.

等价关系上的信息熵具有最为简单、规范的性质。

Whether or not it is part of a regional system ultimately depends on the equivalence relation that is being used.

Whether或没有它是一个区域系统最终取决于等价关系正在使用。

It is proved that both channel homotopy and communication space homotopy is equivalence relation.

证明了渠道同伦和传播空间同伦都是等价关系。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。