查询词典 decision problem

To calculate the effective damage area is a key problem in the procedure of fire tactical decision making.

计算导弹打击复杂形状面目标有效毁伤面积是火力运用过程中的一个关键问题。

In this dissertation the"Penalty"finite element method was employed to compute the velocity of the three-dimensional flow of power-law fluid in a profile die. In order to decrease the needed computer memory and raise the stability of numerical simulation, a set of decoupled methods such as PFEM, pseudo-body force method and transformation of momentum equation to the elliptic equation was developed to establish the general finite element equations to compute the distributions of velocity and viscoelastic stress of the three-dimensional viscoelastic flow of the Phan ThienTanner fluid in a profile die. During numerical simulation of the extrudate swell of the PTT fluid, the flow in the die and out of the die was analyzed separately, which demands less computer memory. The key techniques used in numerical simulation of the three-dimensional extrusion from dies such as decision of boundary conditions, creation of initial velocity field, selection of penalty factor, high Weissenberg number problem , regeneration of the free surface were studied in detail.

中文题名聚合物异型材口模挤出三维流动研究副题名外文题名 Study on three-dimensional flow of polymer melts during the process of profile extrusion from dies 论文作者涂志刚导师柳和生包忠诩教授学科专业材料加工工程研究领域\研究方向学位级别博士学位授予单位南昌大学学位授予日期2001 论文页码总数148页关键词挤出成型聚合物材料挤出口模聚合物异型材馆藏号BSLW /2003 /TQ320 /9 本文建立了求解挤出口模内幂律流体流动速度场的通用三维罚有限元模型；对于非线性粘弹性的Phan Thien-Tanner流体，为了降低模拟计算对计算机硬件的要求，并使模拟计算更加稳定，采用了一种去耦算法，包括罚有限元方法、拟体力方法和动量方程的椭圆类方程转化方法，并建立了求解速度场和粘弹性应力场的总体有限元方程；对于PTT流体的挤出胀大问题，提出了挤出胀大熔体口模内外分离模拟法，这样可以显著降低数值模拟对计算机硬件的要求。

This thesis firstly analyze the current situation of aging problem in our country, identify and confirm the four factors that affect the decision of retirement age which are life expectancy, the initial working-age, human resources structure and reserve pension insurance.

本文首先分析我国人口老龄化问题凸显的现实情况，识别和确定影响退休年龄决定的四个方面因素：一是人均寿命；二是初始劳动年龄；三是人力资源结构与演变；四是养老保险基金储备。

At above-mentioned problems, under the traditional the frame of newsboys problem , this thesis considered wholesale price purchasing contracts at first, namely the supplier's decision variable is only the wholesale price.

针对上述问题，本文在报童问题框架下，首先考虑了供应商的批发价格采购契约，即供应商的决策变量仅为批发价格。

Proceeding from the coordination of the relAtionship between wood processing enterprise andenvironment factors,this paper analyses the problem of production scale of wood processing enterprise and the decision--making model of production scale of wood processing enterprise is probedand put forward.

木工企业生产规模的优化决策研究颜佑启摘要本文从企业与环境关系相互协调的角度出发，分析讨论了木材加工与综合利用利用企业的生产规模问题，探讨并提出了其决策模式。

The arrangement of monitored points for urban water-supply pipe network system is a decision-making problem of multi-objective.

给水管网系统监测点的设置是一个多目标决策问题。

Moreover, according to the practical problem lying in the shipping company's operation decision, shipping transportation investment, ship renewal, tramp and liner operation, and land based industry, and the general character of our country's shipping company management, this paper analyses systematically the practical problems lying in the process of de...

在系统地调查我国航运企业在经营管理决策中所存在问题的基础上，针对航运企业经营决策，航运投资，船舶更新，不定期船、班轮经营，陆上产业等急待解决的实际问题，结合我国航运企业管理的一般特点，对航运企业生产、技术、企划、经营活动在其决策过程中所存在的实际问题进行了系统地分析，实现了航运企业经营发展决策的DSS辅助决策支持

The foundation education is changed direction the basic purpose of"education for all-round development" by"should try an education" to want intelligence at the child to develop a stage to come out their intelligences development with maximum limit, but the high school logic learn teaching to the foundation educate in of the intelligence development has important influence decision a function, so, as soon as possible become is suitable for high school logic in Yunnan to learn the school of teaching this a course to become each high school logic to learn the problem that the worker should value.

基础教育由&应试教育&转向&素质教育&根本目的是要在儿童智力发展阶段最大限度地把他们的智能开发出来，而高校逻辑学教学对基础教育中的智能开发有重要的影响决定作用，所以，尽快形成适合云南高校逻辑学教学的校本课程成为每一个高校逻辑学工作者应该重视的问题。

Scale is the basic and most important problem in AHP, however, the influence of choosing scale in decision making is often neglected.

AHP方法的基础和核心问题是标度问题，而在运用AHP过程中，人们往往忽视标度的选择对决策结果的影响。

Mine ventilation system optimization is a decision-making problem about complexity system which is composed of many integrating, interrelating and interdependent quantitative and qualitative factors.

矿井通风系统优化是一个有定性和定量相互结合、相互关联、相互制约的众多因素构成的复杂决策问题。

Effective local search tactics reaches local searchers when they are ready to buy - with every way that it is possible for them to buy from you.

有效的地方搜索策略达到当地的搜索，当他们准备购买-以各种方式，这是他们有可能从您那里进行购买。

The first two are periodic sentences for their beginnings; and the fifth and the last are also periodic sentences each for the embedding of a parenthetic structure.

1960年代中后期，当战后女权主义和当时的许多其他抗议运动在西欧和北美发展成某种势力时，性别的概念演绎成补充和延伸生物性别差异的概念。