查询词典 constraints

Classifying the system constraints as basic constraints and variable constraints,a model of flexible multibody with changing topologies is developed.

将系统约束分为基本约束和条件约束，建立了变拓扑结构柔性多体动力学模型。

Another key point in the contact problem is how to deal with such contact constraints as normal force constraints and displacement constraints.

在接触问题分析中，接触约束的施加是一项关键的技术。

If an external variable declaration also includes a declared type, the value provided by the external environment must match the declared type, using the matching rules in 2.4.4 SequenceType Matching (see 2.2.5 Consistency Constraints ).

如果外部变量声明也包含一个声明的类型，则由外部环境声明提供的值必须与声明的类型一致，此处应用2.4.4 SequenceType Matching中的匹配规则（参见2.2.5 Consistency Constraints）。

We also provide basis for KB splitting and solve the KB splitting problem Gasser has referred to but failed to solve We systematically analyze the multiple factors which lead to reorganization: the status and environment of system, the status of cooperative members, the properties and requirements of users, the amount, frequency, temporal constraints, task-solving quality constraints, cost constraints and resource constraints of the task to be solved, and the resource status, etc. We also present and realize an open, multi-level and multi-stage model to reorganize dynamically the architecture.

系统地分析了引起重组的多方面因素：系统的状态、环境，协作成员的状况，用户的属性、要求，待解任务的数量、频度、时间约束、求解质量约束、求解代价、资源约束，及资源状况等；提出并实现了开放的、多层次和多阶段的体系结构动态组织模型。

It can be integrated into existing applications. It is designed for application developer. The system provides power modeling. Users can widely select decision variables, such as integer, real, Boolean, etc. Users can also select extensive set of predefined constraints, such as primitive constraints and function constraints, local constraints and global constraints.

"明月"系统是开放的C++类库，可嵌入到具体的应用中，可扩展，是面向开发人员设计的；系统具有强有力的建模功能，用户可以广泛选择决策变量，例如整型、实型、布尔型等；可扩展的预定义约束集合，其中包括基本约束和功能约束，局部约束和全局约束。

In the POPF model, wind farm is modeled by the probabilistic wind farm model considering the reactive power-slip characteristic, and the inequality constraints include not only the unit output constraints, the ratio constraints, the voltage constraints and the line current constraints but also the reactive compensation capacity constraints in wind farm and the system climbing capacity constraints per minute. By introducing the NCP function, the KKT conditions of POPF system are transformed equivalently. Based on the transformed nonsmooth nonlinear algebraic equations, the FOSMM is used to determine the POPF model expressed by the numerical characteristic of variables. The model includes nonsmooth functions, so it can be solved by a semismooth Newton-type method based on the subdifferential.

概率最优潮流模型中，风电场采用考虑无功功率—滑加热器差特性的风电概率模型，不等式约束中除了机组出力约束、有载调压变压器变比约束、电压约束和支路电流约束，也考虑了风电场无功补偿容量约束、系统的分钟级爬坡能力约束；使用非线性互补函数将概率最优潮流的KKT条件转化为一组包含有不光滑函数的非线性代数方程组，然后基于一次二阶矩法确定了以待求量的数字特征表示的POPF模型，由于该模型包含不光滑函数，因此采用基于次微分的半光滑牛顿型方加热器法求解。

There exits several MDO algorithms. But they are in our opinion either nonefficient or complicated. So we devised an algorithm called Subspace Approximation Optimization . In the SAO algorithm, the whole system is decomposed into one system-level optimization and several disciplinary optimizations so that a large and complicated problem can be divided into several easy-solving sub-problems. The coupling relationships and the coordination among disciplines are presented by equality constraints and these equality constraints are assigned to relevant disciplines. The optimums of design variables in system level optimization are transferred to discipline level optimization. The optimums of design variables in discipline level correspond to the point that is the nearest to the optimums of design variables in system level. If the optimums of design variables in system level are out of feasible region of discipline 1eve1, linear constraints can be built in the system level optimization using the design variable optimums obtained by the discipline level optimization. The system level optimization would improve the design of the whole system with these linear constraints.

目前，国内外已经发展出了多种飞机多学科设计优化算法，本文的重点是针对协同优化算法的不足，提出了子空间近似优化算法(Subspace ApproximatingOptimization，SAO)，SAO算法中，整个系统的优化问题被分解成一个系统级优化和若干学科级优化，而各个学科之间的耦合与权衡关系则被当作等式约束，这些等式约束将被分配到各个学科级优化中去，系统级优化的任务是寻找整个系统的最优解，而学科级优化的目标函数是以系统级优化分配下来的设计点为圆心的超球半径的平方，因此，如果系统级优化分配下来的设计点在学科级优化可行域内，则学科级优化目标函数为0，反之，则学科级优化的最优点是系统级优化当前设计点距离可行域最近的点。

Association rule is an important content in data mining, efficient arithmetic is the most important part of data-mining 昺odel, especially when facing the complicated and various demands, it is necessary to propose characteristic and complementary arithmetic according to different factors. The paper analyses elaborately the idea of association rule mining arithmetic based on constraints, studies the classes of constraints in order to confirm its utility. The arithmetic aiming at united variable constraints improvement strategy and exchange of complication aggregation constraints has been designed, the practice has proved that it is effective.

关联规则是数据挖掘研究的重要内容，高效的算法是数据挖掘的重要组成部分，而且面对复杂的多方面的需求，应提供针对各种因素的各具特色的互补的多种算法，本文详尽地研究了基于约束的关联规则挖掘算法的思想，深入地研究了约束的分类、确定其可利用的性质，在此基础上提出了针对联合约束中前驱和后继重叠时的改进策略和复杂聚集约束的转换方法。

In order to solve the above problems, a scalable multicast routing protocol with QoS constraints is proposed in this dissertation at first. It could absolutely make distributed computering into realization and then solve the problems successfully by the integration with local search and global search、single-branch search and multi-branch search.

本文从研究现有多播通信模型以及QoS约束的多播路由协议和算法出发，首先提出了可扩展的QoS多播路由协议MRPQoS(Multicast Routing Protocol with QoS constraints)，它将局部搜索与全局搜索、多分支搜索与单分支搜索有机的结合在一起，有效解决了同类协议消息复杂度高、寻路成功率低以及连接建立时间比较长等问题。

A self-evolving software technique is proposed, which is based on Agent technique and the dynamic binding mechanism. According to the characters of self-evolution, the constraints are divided into micro level constraints which focus on individual Agent and the macro level constraints which focus on overall system. Language facilities are proposed to describe the constraints on self-evolution, the constraints are analyzed and inspected through runtime verification.

提出了基于Agent，以动态绑定机制为核心的软件自演化技术，根据自演化的性质和特点，区分出微观层面个体Agent自演化约束和宏观层面系统全局自演化约束；提出了对自演化约束进行描述的语言设施，并通过运行时检查的方法对自演化约束条件进行了分析和检查。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。