查询词典 evaluation of functions

Main contributions and achievements are as follows:A general non-equilibrium rigorous model for RDP is developed in this thesis. Based on the pseudo-homogenous assumption, two main factors reaction and separation are de-coupled, and an RDP model with the same format as that for a traditional distillation process is established. To solve the model with a large number of algebraic equations, modified M-K equations with tri-diagonal matrix form are developed based on the improved Separation Efficiency Functions, which greatly increases the iteration efficiency. This thesis also develops a general reactive distillation dynamic model. Through splitting of the differential variables based on SEFS, large-scaled differential algebraic equations can be solved with the improved Gear's algorithm which makes the dynamic model suitable for the on-line application. A simulation platform for the control loop design and evaluation of RDP by introducing control system equations into the dynamic model is also developed.A lactic acid purification pilot-scale RDP is investigated.

论文对热点问题——反应精馏过程的建模与优化控制相关技术进行了深入的研究，取得了一系列成果：1、建立了反应精馏过程机理模型，基于拟均相假设，将反应和分离过程进行解耦，推导出反应精馏过程的非平衡级稳态模型和动态模型，通过引入推广的分离效率函数，对模型变量进行了合理划分，显著提高了模型求解效率；将动态模型和控制系统方程结合，建立了反应精馏过程控制系统研究的辅助工具。2、全面分析了乳酸提纯反应精馏新工艺试验装置，利用本文建立的过程机理模型，对该试验装置进行了稳态和动态性能分析及水力学核算；设计和分析了单边质量控制方案，比较了间接和直接物料平衡控制两种方案的控制性能。

Through the polynomial approximation to function, resulting in more than a Peano-type and Lagrange remainder of the Taylor formula, using elementary functions Maclaurin expansions to address the limits and the approximate evaluation of the problem.

通过多项式来逼近函数，从而得到带有佩亚诺型余项和拉格朗日余项的泰勒公式，利用初等函数的麦克劳林展开式来解决极限及近似求值的问题。

The article puts forward a kind of method of evaluation of the functions which is on behalf of the users.

论文摘要：这篇文章针对UML建模工具的功能，从用户的角度提出了一种评价的方法。

Abstract摘要:The article puts forward a kind of method of evaluation of the functions which is on behalf of the users.

论文摘要摘要：这篇文章针对UML建模工具的功能，从用户的角度提出了一种评价的方法。

Technology is the object of ethical evaluation of the technical attributes and functions of the ethics and the relationship between the needs.

技术伦理评价的客体是技术的属性和功能与人的伦理需要之间的关系。

Chapter 8 mainly gives concrete evaluation of policy functions, laws and systems in respect of the economic development of the west.

第八章主要对西部经济发展的政策功能、法律及制度做出了具体的评价。

Quantitative tissue velocity imaging offers objective and accurate evaluation of myocardial movement functions in patients with essential hypertension.

定量组织速度成像能够客观、准确的评价EH患者的局部心肌功能。

Experimental examination and evaluation of cardiac functions were taken in four steps.

前先进行安静状态下的检查与评定，排除明显的心脏疾病，并初步评价心功能。

Genetic algorithm has a primary disadvantage that computational cost increases greatly for over much evaluation of objective functions and their fitness.

遗传算法的缺点在于计算过多的目标函数适应值而增加了优化设计的计算量。

This can provide guiding principles for people to adjust and reform the relationships the benefits among people. Evaluation of management functions and characteristics which evaluators offer must be based on a certain scale and a certain value standard.

管理价值评价作为管理价值主体对以组织为载体的管理行为满足主体需要的功能和属性的效应的评价，必须以一定的尺度，一定的价值标准来进行的。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。