查询词典 rational function

The new circumstances that the discrete manufacturing enterprise is confronted with are analyzed; the function and configuration of production system is expounded; the research actuality and contents about production system capacity in the discrete manufacturing enterprise are summarized; the main research contents in this paper are developed.2. The calculating and analytical methods about production system capacity are studied systemically, a model to calculate rough-cut capacity instantly in "excel" table style is designed, the means to analyze production capacity in different production mode are brought forth, and the balance tactics of production capacity versus load are put forward.3. The application characteristics used in production system about the methods of Computer simulation and CRP in the MRPII/ERP are analyzed and compared; the advantages of Computer simulation method are pointed out; and the simulation researches aiming at production system capacity are implemented by Ithink simulation software.4. A simulation model is founded under the analysis of production system capacity in the production system background of a firm; the change instances of yield, output rate and WIP in the production system are simulated by the action of procurement cycle, machining time, setup time and so on. 5. The change instances of production capacity in the assembly stage are simulated , and rational employees are obtained.

本文主要进行了以下几个方面的研究：1、分析离散型制造企业面临的新情况，阐明生产系统的功能和结构，对离散型制造企业生产系统生产能力的研究内容和现状进行分析，提出本课题的主要研究内容。2、在系统地研究生产系统生产能力的计算和分析方法后，设计了用Excel表快速计算粗能力的方法；给出不同生产方式下的产能分析方法，并提出产能与负荷平衡的策略。3、比较和分析了MRPII/ERP的能力需求计划方法与计算机仿真方法在生产系统中的应用特点，指出计算机仿真方法的优势，并用Ithink仿真软件对企业生产系统生产能力进行了仿真研究。4、以A公司的生产系统为背景，在对生产系统生产能力分析的基础上建立了仿真模型，模拟了在采购周期、加工时间、调整时间以及返工率、废品率、机械开工率等因素作用下生产系统的产量、产出率和在制品数量的变化情况。5、研究在装配阶段生产能力的变化情况，通过仿真优化后确定合理作业人员数量。

However,there are some ecological crisis emerged in Qilihai recent decades.Making reference of many experiences of wetland protection,recovering and development,this paper gives some rational suggestions of ecological restoration and green development in wetland:protecting and managing it according to law and rules of reserve firstly;recovering nature function of the river which had compensated for ecol...

近几十年出现了严重的生态危机，本文借鉴众多湿地保护与开发经验，就七里海湿地生态恢复与绿色开发利用提出了一些可行的措施：依据自然保护区的相关法律法规对其进行切实保护与管理，通过恢复河流生态补水、翻耕苇地、禁捕鸟类等生态修复措施恢复其生态功能，进而发展湿地绿色产业、开展项目建设环评等绿色开发活动发挥其重要的生态、经济和社会价值。

The items of investigation on physical and mental health included general information, rational symptom, function of autonomic nerve and sensory nerve, blood routine, conjugated bilirubin , serum protein , glutathione-s-transferase, malondialdehyde, reproductive functions, state of mental health.

工人身心健康调查项目包括一般情况、自觉症状、自主神经和感觉神经功能、血常规、血中结合胆红素、血清蛋白、谷胱苷肽-S-转移酶和丙二醛、女工生殖功能和心理健康状况。

The rational principle of physics as well as a derivation of the structure of Lagrange function for general system is introduced.

不同的只是物理学家是以自然界为对象，而系统科学工作者所面临的则是除了自然的物理

The situation with the machine physics function of every Slave and different configuration, the load that reuse random takes no account of function is balanced, it is very unscientific, the machine that can give machine function difference so brings needless high load, bring the risk of delay machine even, at the same time high-powered database server also cannot develop its physics property adequately.

每个Slave的机器物理性能和配置不一样的情况，再使用随机的不考虑性能的负载均衡，是非常不科学的，这样一来会给机器性能差的机器带来不必要的高负载，甚至带来宕机的危险，同时高性能的数据库服务器也不能充分发挥其物理性能。

The application problems mainly focus on how to solve triangle, acute triangle function, equation, inequation, function and its image, the three-dimensional image of a solid; while such knowledge as, plane geometry, solid geometry, operation of number and equation, trigonometric function equation, permutation and combination, ordered series of numbers sum, probability has no application problems.

4高中物理学习中存在运用困难的数学知识主要有函数及其图像、解三角形、锐角三角函数、方程、不等式、求函数极值、几何体的三视图等，然而，平面几何、立体几何知识、数与式的运算、三角函数公式、排列组合、数列求和、概率等知识基本没有运用困难。

The Frechet derivative of the cost function is determined via the solution of an adjoint partial differential equation, and the boundary shape is then modified in a direction of descent. This process is repeated until an optimum solution is approached. The advantage is that the cost function variation is independent of the flow field variation, with the result that the gradient of cost function with respect to arbitrary number of design variables can be determined without the need for additional flow-field evaluations. So each design cycle requires the numerical solution of both the flow and the adjoint equations leading to a computational cost roughly equal to the cost of two flow solutions.

虽然他们的研究成果大多数都可以在公开性文献上看到，但是其中一些具体的细节问题的处理方法却没有透露，比如：伴随方程如何离散求解才能减小最终梯度计算中的误差，使得设计过程有效地进行；伴随方程与流动方程的边界条件是不同的，如何合理地处理伴随方程的边界条件，才能推动设计过程朝着设计目标而发展；在减阻问题中目标函数如何定义，求解梯度的具体数学公式如何推导，如何通过数值方法来实现它们等。

Matlab Toolbox time-frequency analysis, with short-time Fourier transform, Cohen category bilinear time-frequency processing function, Affine category bilinear time-frequency processing function, Fuzzy function and the other handling functions such as source, it should be very useful.

Matlab 时频分析工具箱，含短时傅立叶变换、Cohen类双线性时频处理函数、Affine类双线性时频处理函数、模糊函数和其他处理函数等源码，应该很有用。

A stress function involving several unknown co efficients was constructed in the solution process, and the stress and displacement expressions were obtained through traditional Airy stress function methodology. After the fixed end boundary condition was treated with two methods, the unknown coefficients in stress function were determined with stress and displacement boundary conditions, and the analytical solutions were achieved.

在求解过程中，构造了一个含待定系数的应力函数，通过Airy应力函数解法，给出了应力和位移的表达式，对固支端边界条件采用两种处理办法，利用应力和位移边界条件，确定应力函数中的待定系数，得到了应力和位移的解析解结果。

From this,two algorithms to find low degree annihilators of a Boolean function are present:complete searching and stochastic searching.The complete one can not only get all the low degree annihilators of a Boolean function,but also get the algebraic immunity of the function.

利用完全搜索法可以得到布尔函数的所有低次零化子，同时还可以确定该布尔函数的代数免疫度；利用随机搜索法能快速得到布尔函数的任意一个低次零化子。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。