查询词典 mathematic

The question of searching characteristic points or straight lines on moving rigid body is decomposed into two relatively independent sub-questions. The first one is to evaluate the characteristic of points and straight lines on moving rigid body, whose mathematics model is a kind of special non-differential max-mini optimal problem with inequality constraints. By the method of Saddle-point Programming and maximum entropy, the problem can be transformed as a differential optimal problem with single objective. The second oner is to search approximative character points or straight lines on moving rigid body within design space, whose mathematic model is nonlinear and non-differential problem with multiple constraints.

本文将在运动刚体上寻找特征点或直线的优化问题分解为两个相对独立的子问题，一是对运动刚体上点或直线的特征性评定，其实质是平面曲线的圆度或直线度的评定问题，优化模型是以最大误差为最小作为优化目标的约束不可微的优化问题，本文采用鞍点规划和极大熵方法，将其转化为单目标可微优化模型；二是在设计空间内，寻找运动刚体上特征性评定指标最小的近似特征点或直线，其优化模型是非线性、多约束的不可微优化问题，本文提出用遗传算法和BFGS局部搜索法相结合来求解。

The study of operator algebra bagan in 30times of 20th century. Though compary with some other theory it is relatively new, but it has unexpected application in some mathematic theory and other subject, such as quantum mechanics, noncommutative geometry, linear system, contral theory, number theory and some other important branches of mathematics.

算子代数理论产生于20世纪30年代，它在数学和其他学科中都有着出人意料的应用，它与量子力学，非交换几何，线性系统，控制理论，数论以及其他一些重要数学分支都有着广泛的联系和相互渗透。

Optimal control mathematic model of guided bomb's optimal glide trajectory was established.

建立了制导炸弹铅锤平面内最优滑翔弹道问题的最优控制数学模型。

Furthermore, buckling effect factors and their influence law are exploited. Finally, combining the character of piles foundation with high bridge piers with engineering practice, four optimal mathematic models are proposed and flow diagram of optimization analysis is fulfilled by the computer optimum program. A numerical example is analyzed to get optimal solution by using this program. Meanwhile based on the optimal model with buckling coefficient as the objective function, parameter variables are discussed about their effect rule toward the optimal value of objective function.

最后，针对高桥墩桩基础的特点，在基本优化模型的基础上，根据不同的目标函数建立了相应的优化模型，给出优化设计算法流程图，编制了相应的优化计算程序；并根据高桥墩桩基的工程实际设计了一个数值算例，采用本文编制的优化计算程序对该结构进行优化，得到了优化后的最优解；同时，采用高桥墩桩基屈曲系数作为目标函数的优化模型进行因素分析，初步探讨了参数变量对目标函数最优值的影响规律和程度。

The paper studies methods of utility system energy synthesis and optimum design by using mathematic programming, which is an effective tool.

本文采用数学规划这一强有力的工具对公用工程系统能量综合和最优设计方法进行研究。

A mathematic model for Angang BF burden optimum based on linear programming and neural network has been set up,through which the reasonable burden design was found out.

使用线性规划法和神经网络建立数学模型的方法建立安钢炉料结构优化系统，通过该系统得到了安钢高炉合理的炉料结构。

This chapter makes use of satellite orbit space geometry to deduce mathematic model and formulas of judgment.

本章通过卫星轨道空间几何关系，推导得出用户判断所在波束的数学模型和计算公式。

Based on depth averaged mathematic model of flow and pollutant tr ans portation in non orthogonal curvilinear coordinates , the k-ε double equat ions' turbulence model and the coupling arithmetic of velocity water depth are a dopted, which are applied to the numerical simulation of the flow and the contam ination diffusion transportation.

基于非正交曲线坐标下水流与污染物扩散输移的深度平均数学模型，采用k -ε双方程湍流模型和速度—水深耦合算法，应用于实验室连续弯道的水流及污染物扩散输移的数值模拟，分别计算了流场及岸边和中心污染物排放的浓度场，得到与实测值吻合良好的计算

This course focus on mathematic tools such as vector calculus, orthogonal function, fourier series, fourier analysis, fourier transform and partial differential equations, etc.

此一数学工具为本课程的教学重点，包括向量微积分、正交函数与傅立叶级数、傅立叶分析与转换、以及偏微分方程等内容。

Mathematic model is studied to describe unstable water injection development for Middle East Paleocene reservoir with characteristics of pressure sensitivity and high difference of formation-saturation pressures.

为了定量研究具有压敏特点的中东地区古新世高地饱压差油藏不稳定注水开发的数学模型，通过静水力学方法和单轴实验的方法，对中东地区古新世岩心渗透率随围压变化的规律进行实验研究；结合黑油模型的假设条件，推导了此类油藏不稳定注水渗流的全新数学模型。

Tom: You are right, he worked hard all the time.

你是对的。他一直都是努力工作。

Take shortcomings,failures,and mockings of others as commonplace and a drive to complete oneself,hold your own opinion over the evalution and disscution divested from others,afterwards sink into the state of eliminate mistakes if any or encourge oneself being not being influenced by the sayinngs of others or having no ideas to do.

把缺点、失败及别人的耻笑等看成是一种常事，当成完善自己的动力，对别人的评价和议论自己心中有主见，做到&有则改之，无则加勉&，不为人言所左右或无所适从。