查询词典 mathematical

The grey target theory is used to set up the model for mathematical evaluation;the tactical and technical performance indices,which reflect the effectiveness of weapon systems best,is used to form the index series of weapon systems to be evaluated,and the standard mode of these index series is derived according to the .

即：首先用灰靶理论建立评定方法的数学模型，以能反映武器系统效能的战技性能指标构造各比较方案或模式的指标序列，进而求得各指标序列的标准模式。

In this paper, a mathematical description of mutation operator and a concept of mutation function for the study of evolutionary programming and evolution strategies are proposed, and several methods and examples of constructing mutation operator with uniformly distributed random variables are presented.

进化算法是研究全局优化算法中最重要的随机算法之一，本文给出了进化规划和进化策略的变异算子的数学描述，并提出变异函数的概念，在此基础上，给出了用均匀分布的随机数构造变异算子的几种方法和若干例子。

This paper mainly includes two aspects:(1) The review on soft-measuring technique:The first aspect of this paper introduces the mathematical descriptive form of soft-measuring technique and its engineering design steps, then elaborates the two modeling methods of soft measurement which include the regression analysis and the artificial neural network.

本文研究的内容主要有以下两大方面：一、对软测量技术进行综述。介绍了软测量技术的数学描述形式及工程化设计与实现的步骤。

Mathematical Notes;Descriptive Geometry;Stereonet Techniques;Stress And Strain;Analysis of Complex Structures

数学注解；画法几何学；立体图技术；应力与应变；复杂结构分析

The 21st century is a century of life science,the mathematical biology advanced rapidly, and the study in determinate system is perfect. In face,the species ecology systems are often subject to ,some uncertain factors,white noise,whether the presence of such noise affects these results that we have obtained has received exten sive attention ,which makes the study about stochastic system more and more important.

21世纪是生命科学的世纪，生物数学的发展突飞猛进，百花争妍，其中对确定性系统的研究已经较为完善，而实际上的种群系统常受到一些不确定性因素的干扰，即白噪声的干扰，研究白噪声的存在是否影响种群生态系统以及是否使原有的结果发生变化已受到广泛的关注，这就使对随机系统的研究显得尤为重要。

Method］ With Lonicera japonica Thunb. as material , diurnal changes of net photosynthetic rate in leaves of the plant and the responding mathematical model of NPR to photosynthetic valid radiation were studied using portable photosynthetic determinator system.

方法］以金银花为材料，采用便携式光合测定系统，研究其净光合速率日变化及其对光合有效辐射响应的数学模型。

Besides, the study adopts the "Deterministic Mathematical Programming" methods of the prior scholar advanced to solve products packing and loading and to design the customer-oriented packing system.

同时使用Java 程式语言，并嵌入了数学最佳化套装软体Lingo，来开发一套以顾客需求为导向的包装承载系统。

A mathematical model and a program are developed to calculate neutron yields, energy spectrum and angular distribution of D^3 He reaction in a thick deuterium-titaniumTiD(subscript x target as incident deuteron energy lower than 1.0 MeV.

给出一种计算氘钛厚靶D^3 He反应加速器中子源的产额、能谱和角分布的方法，并发展了一个计算机模拟程序，程序能够计算氘束流能量小于1.0 MeV的中子源的产额、能谱和角分布。

On thinking of the studies of developmental psychology and mathematical education.

最后，根据上述研究结果，我们着重讨论了如下几方面的问题：（1）关于发展心理学与数学教育研究的思考。

The article introduces basic principle and mathematical model of deviation from share method.

我们从不同的侧面和不同的层次对该市的产业结构进行了分析。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。