查询词典 problem solving

In Chapter 1, two solutions to the elliptical boundary value problem have been constructed through a monotone iterative process, and they might be identical. In Chapter 2, the author expresses the local solution to the parabolic initial boundary value problem taking advantage of Green function. In Chapter 3, the asymptotic solution to the initial value problem of Duffing equation is obtained and the method for finding the approximate solution to the inverse problem is put forward.This paper is planned with a view to the author's research means.

从研究结果看：第一章通过单调迭代过程构造出椭圆型方程的边值问题的两个解，并且指出二者可能是同一个解；第二章利用格林函数给出了抛物型方程的初边值问题的局部解的解析表达式；第三章中，先对Duffing方程的初值问题写出解的渐近展开式，再对其反问题提出一种求近似解的方法。

In this paper,the following assignment problem is considered:there are persons to be assigned to do jobs,where,every person who is assigned to do one job,meanwhile,every job demands one person to do;then,this assignment problem is called standard assignment problem,furthermore,it is called general assignment problem.

考虑了指派问题：有m项工作和n个人。若m与n是相同的，并且每一项工作只能由一个人来做；同时，每一个人只能做一项工作；符合这一条件的指派问题称为标准指派问题；若m与n不相同，则称为非标准指派问题。

The invention discloses a ternary alloy hyperacoustic motor frictional material of the fire resistance resin modified polyphenyl ester, which solves the low friction coefficient problem, the low impact strength problem, the low abradability problem and the bad processability problem of the prior hyperacoustic motor.

耐高温树脂改性聚苯酯三元合金超声马达摩擦材料，它涉及一种聚苯酯基超声马达的摩擦材料。本发明解决了现有超声马达摩擦材料存在摩擦系数小、冲击强度低、耐磨性能达不到要求，以及加工性能差等缺点。

The problem of universals is no longer a philosophical problem, but also a problem in belief. The history of this problem is ended here in this thesis with Abelards conceptualism.

然后文章再从关于共相讨论的演变出发，梳理了一条清晰的哲学史发展线索，那就是从古希腊到中世纪中期关于共相问题的争论，并以阿贝拉尔的观点做一个时间上的收尾。

On the other hands, the application of the particle swarm optimization algorithm in discrete optimization problem—resources constrained project scheduling problem, which is always used in continuous optimization problem, provides some important train of thought and method for resources constrained project scheduling problem as well as widening the application area of particle swarm optimization algorithm.

同时将在连续优化问题中得到成功应用的PSO算法用于离散域的RCPSP，既拓展了PSO算法的应用领域，也为RCPSP的求解提供了一种新的思路和方法。

Based on the ICMmethod,the discrete topological optimization problem about spot-weld's existence or not is transformed into the continuous optimization problem on[0,1].The optimization model is founded with maximizing the structural stiffness as objective and structural strength as constraints.The problem of multi-objectives and multi-constraints is transformed into the problem of single-objective and single-constraint with the K-S function.The displacement and stress are transformed into the explicit function of design variables with the Response Surface Methodology.The optimization model is solved with Sequential Quadratic Program.

基于ICM（Independent Continuous Mapping，即独立、连续、映射）方法，将焊点有无的离散拓扑优化问题转化为[0，1]区间上的连续优化问题；建立了以结构刚度最大为目标、结构强度为约束的连续拓扑优化模型；采用K-S函数将多目标和多约束问题转化为单目标和单约束问题；运用响应面方法将位移和应力转化为设计变量的显式函数，采用序列二次规划方法求解优化模型。

Based on the characteristics of wireless sensor networks, a routing problem is converted firstly into linear programming problem, and the equivalence between the routing problem and linear programming problem is proved.

基于无线传感器网络特性，首先将路由问题转化为线性规划问题，并证明了路由问题与线性规划问题的等价性。

With the help of the fundamental theory to singular measure differential system, Green's function matrix expression of solution and well-posed boundary condition are given, together with discussing the properties of the Green's function matrix under the influence of impulsive effect In section 5, based on Lyapunov function method, we investigate that the existence of the first boundary value problem to second-order singular system by macthing the solutions to the second boundary value problem; and the existence and uniqueness of three-point boundary value problem to third order singular system by macthing the solutions to two-piont boundary value problem.

第五部分借助Lyapunov函数法，通过将第二类边值问题的解对结成第一类边值问题的解，得到了二阶广义系统的第一类边值问题解的存在性；通过将两点边值问题的解对结成三点边值问题的解，得到了三阶广义系统的三点边值问题解的存在性和唯一性。

I wonder what the problem is.What's the problem?What's the problem?I wonder!I wonder what the problem is.

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But at present, the fields of enterprise and theory have not attached importance to the problem of enterprise product mix adjustment, which is mainly reflected in the following aspects. The first is that most enterprises maintain existing situation of product and enterprise and solve sale problem by the way of sales promotion while facing market problem. The second is that most enterprises follow others blindly while consider the problem of market entry, but is passive not active while facing market dropout. The third is that in the aspect of management most enterprises don"t make adaptive managerial strategy according to enterprise"s interior and exterior situation, but flow the routine "learn from successful enterprise, elude failing enterprise". The fourth is that the study on the enterprise product mix adjustment from the side of theory is scarce and fragmentary, immethodical.

但是，目前企业产品结构调整的问题还未引起企业界和理论界的重视，主要体现在：一是面对市场问题，大多数企业是维持现有的产品和企业状况，通过促销手段来解决产品销路问题；二是对待企业产品市场进入的问题上，大多数企业是盲目跟进；而对产品的市场退出，大多数企业往往是被动而非积极主动的；三是在经营方面，大多数企业基本上走的还是"学习成功企业，规避失败企业"的路子，没有从企业自身的内部条件出发，为企业量身制定适合的经营战略；四是迄今为止理论界对企业产品结构调整问题的研究还是少之又少，有关产品结构方面的研究还只是零星、不成体系的。

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。