查询词典 constraints

The New World removed Malthusian constraints, which, until then, had meant that higher population growth could be achieved only at the expense of lower living standards.

新大陆摆脱了马尔萨斯主义的羁绊。在当时，马尔萨斯理论即意味着只能通过降低生活水平实现人口的更快增长。

Every Design is Manufacturable reflects the huge benefit that EDM has brought to design engineers, allowing them to relax traditional manufacturability constraints and design products with optimum functionality. Efficient Domestic Manufacturing reflects the fact that EDM is, increasingly, the process of choice for manufacturers in high-wage countries such as the United States, because the EDM process is so much less labor intensive than almost any other machining process.

每个设计是Manufacturable反射EDM给设计工程师带来了，给他们放高效率的国内制造业反射事实EDM是，越来越，选择的过程为制造商在高薪水国家例如美国，因为EDM过程比几乎其他用机器制造的过程非常较不劳动密集型。

Such problem can also be described as an average reward Markov decision process with additional constraints, which can be equivalent to an integer linear programming problem.

在已知极点间转移概率的前提下，将检测点的分布问题描述成一个平均报酬Markov决策过程，并通过转化为一个等价的整数线性规划问题来求解。

The ability to consider the given total mass constraint and a number of constraints on structural parameters.

具有处理结构总重量为定值约束及大量结构尺寸约束问题的能力。

Production schedule management; Master Production Schedule; Manufacturing Resources Planning; Just in Time; Theory of Constraints

论文导师单汨源；周文辉，论文学位硕士，论文专业工业工程论文单位湖南大学，点击次数 1，论文页数 63页File Size3404K

A synthetic model of multi-level production planning and control integration is brought forward, which integrated Master Production Schedule , Material Requirements Planning , Shop Floor Control , order acceptance control, order release control and process control into a whole. Besides, a new method of production management—— Theory of Constraints is introduced into the traditional MRP, and a method to integrate TOC with MRP is put forward. As a result, a system of production planning management for ceramics enterprise is developed. Then several problems of shop planning and control for ceramics enterprise including the modeling of production line, the optimized utilization of kiln, the complement and due-date of products are discussed. A mathematical programming model of equalization production for ceramics production line is set up. An optimized model is put forward, which uses genetic algorithm to solve the sequencing problem of ceramics before the kiln.

以生产计划与控制的集成为目标，提出将一个企业中的主生产计划、物料需求计划、车间作业计划与接受订单控制、投料控制与生产控制集成的多级生产计划与控制的总体模型，将一种新的生产管理方法——约束理论引入传统的MRP中，提出了实现TOC和MRP集成的具体方法；针对陶瓷企业的特点，为重庆兆瓷研制了一套陶瓷企业生产计划管理系统；并对陶瓷企业车间计划与控制中的一些具体问题进行了研究，建立了陶瓷生产线均衡生产的数学规划模型，就窑炉的优化利用、产品配套和交货期问题、陶瓷生产线的能力平衡等问题进行了研究。

The information integrated pattern based on PDM/PLM in the course ofmanufacture is put forward. Under the constraints of building CAPP platform, thearchitecture of CAPP platform is established. The models of decision making andfunction for process planning are given. Then the development means of CAPP basedSmarTeam are extracted.3. The structure of modular product life cycle is established. Toward the divisionand planning of the General Modules oriented product family, theCAD/CAPP integrated model of flexible module based on feature and CAD/CAPPmapping model based on process planning match board are set up. The keytechnologies of Solidworks/SmarTeam/CAPP integration are studies.4. From the point of view of process match board and step match board, theprocess of creating to process planning match board is studied. As an example, themachining process planning of up beam of hydraulic press machines is used tointroduce the establishment of process planning match board by means of inferencebased on expert knowledge. The organize model about the process planning matchboard oriented product family is brought forward.5. The multi-decision methods of CAPP system based on analytic hierarchy aregiven.. On the basis of uniform data model, the sub-machining process planning ofpart is auto-created by means of analytic hierarchy, The step decision methods basedon AHP is put forward.6. For the design/manufacture information in the course of product life cycle, thetree structure based on Object-Oriented and static model based UML are founded. Themethod of establishing design/manufacture information management system isbrought forward. The commercial PLM software—SmarTeam is regarded asdevelopment platform, on basis of which, the design/manufacture informationmanagement system is built, and the multi-view mapping technique ofdesign/manufacture information model is studies.7. A computer-aided CAPP platform based on PDM/PLM is founded, and itsstructure, function, work flow is illustrated. Some example of the system areintroduced.

阐述课题提出的目的和意义，明确了本文研究的主要内容。2、提出基于PDM/PLM的制造过程信息化集成模式；在平台式CAPP系统的设计约束模型基础上，构建了平台式CAPP系统的体系结构；并给出工艺决策模型和功能模型；最后提出基于SmarTeam的CAPP开发模式和实现策略。3、建立模块化产品生命周期模型的组织结构；针对面向产品族的广义模块的划分和规划方法，建立基于特征的柔性模块CAD/CAPP集成模型及基于工艺模板的CAD/CAPP映射模型；研究Solidworks/SmarTeam/CAPP集成的关键技术。4、从工序模板和工步模板的角度研究了工艺模板的创建过程；以液压机上梁模块机加工为例，采用基于专家知识的推理技术实现了工艺模板的创成；提出了面向产品族的工艺模板分层结构树的组织模式。5、提出基于分层规划的多模式工艺决策流程；在统一数据模型的基础上，从特征层和零件层分层规划，实现了零件加工子工艺的自动创成；提出基于AHP的工步排序决策方法。6、针对产品生命周期中的设计/制造信息，建立了面向对象的类树结构和基于UML的静态结构模型；提出基于PDM/PLM软件的设计/制造信息管理系统的构建方法；以商品化PLM软件SmarTeam作为开发平台，开发了基于SmarTeam的设计/制造信息管理原型系统；研究设计/制造信息模型多视图映射机制。7、开发了基于PDM/PLM的平台式CAPP原型系统，构建了系统的功能模型，并对系统的主要功能进行说明，给出系统的运行实例。

In this project we investigated the theories and algorithms for the mathematical programming with equilibrium constraints and their applications.

中文摘要：本项目研究带平衡约束的数学规划问题的理论、算法及应用。

Based on the analysis of this matrix, the constraints for the coefficient matrix were got.

通过对该系数矩阵的分析，得到关於此矩阵的约束条件，并在此基础上，推导了判断此矩阵秩的大小的一个充分条件。

Based on ear recognition, an improved NMFSC(Nonnegative Matrix Factorization with Sparseness Constraints) method was proposed by imposing an additional constraint on the objective function of NMFSC, which could capture the semantic relations of coefficient matrix as orthogonal as possible. The interated rules to solve the objective function with the constraint were presented, and its convergence was proved.

针对人耳识别问题，提出了一种改进的稀疏性受限的非负矩阵因子方法，通过增加一个使系数矩阵尽可能正交的约束条件来定义原目标函数，给出求解该目标函数的迭代规则，并证明迭代规则的收敛性。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。