查询词典 constraint

Based on two-dimensional elastic wave equation and adopts the well logs as constraint condition, a new imaging method of crosswell seismic data-elastic wave equation inversion and imaging with the well logs constraint is given by using adjoint theory of distribution-parameter control system.

基于二维弹性波动方程，利用分布参数控制系统的伴随理论，采用测井资料作为约束条件，本文给出了一种井间地震资料速度成像的新方法——井间测井约束弹性波动方程反演成像。

Defines a biconditional feature-structure constraint; both consequent and antecedent are specified as feature structures or groups of feature structures; the constraint is satisfied if both subsume a given feature structure, or if both do not.

定义一个双条件功能结构限制；结果和前提被指明为功能结构或功能结构群组；若两者皆包含一个已知功能结构、或两者皆不包含，则结果符合需求。

Through analysis we get such a description of feedback constraint closed loop curve for this kind of constraint property.

通过分析得出了描述这种约束特性的反馈约束回线。

The primary work of this paper includes: 1 The general process and the fundamental theory of genetic algorithm is introduced systematically, which is also be applied to an example; 2 The penalty function method and the constraint tournament method are introduced in the paper, which are used to process the constraint limit. Via analyzing the basic principle of NSGA-II ,which is elaborated in the paper, the fast non- dominated sorting method, congestion distance and its comparison operator, the elite strategy and the main process of NSGA-II is researched particularly. 3 Via modeling the fire distribution problem, the model is computed by the algorithm of NSGA-II, which is combined with both the penalty function method and the restraint league tournament method The optimization of two goals are also realized in the paper. The results derived from the VC++6.0 indicate that, two algorithms both have the high convergence, simultaneously the Pareto optimal solution also maintain the variety of distribution.

本文所作的主要工作如下：系统地介绍了遗传算法的一般流程和基本理论，并应用于一个函数优化的实例；研究了用于处理约束限制的罚函数法和约束联赛法，论述了NSGA-II的基本原理，并对其提出的快速非支配排序法、拥挤度及其比较算子、精英策略及NSGA-II的主要流程作了详细的研究；建立了火力分配问题的模型，并将NSGA-II算法分别与罚函数法和约束联赛法相结合对该模型进行了计算，实现了对两个目标的最优化；用VC++6.0编程计算后所得的结果表明，两种算法均具有很好的收敛性，同时Pareto最优解也保持了好的多样性分布。

On the basis of the actuality of the power industry, the paper lists the implement ation condition of incentive compatibility constraint and participation constraint.

针对电力行业现状，本文分析了参与约束和激励相容约束的实现条件，在对交叉补贴、普遍服务基金和政策性补助等几种电力普遍服务实现机制进行讨论的基础上，提出建立电力普遍服务基金是相对可行的、最有效的解决方案。

According to the constituent principles and computative rules of hard points, as well as the characteristics of auto-body packaging, a unique constraint propagation mechanism, which is named as function field based constraint propagation, is established.

根据硬点的组成原理和推算规则以及车身总布置本身的特点，本章建立了一套独特的约束传播机制，即基于功能域的约束传播机制。

In this paper,an improved method of optical flow estimation is proposed under the condition of the basic constraint equation and the smooth constraint.

本文在基本约束方程和平滑性约束条件下，提出了一种改进的瞬时位置速度估计方法。

We develop a framework, which serves as a basis for a new spatial constraint – Density Based Design Constraint – that encourages infill development based on contiguity and compactness principles.

我们开发了一个框架，作为一个新的空间约束的基础-基于密度的设计约束服务-鼓励发展的连续性和填充紧原则为基础。

As a result, this seriously obstructs economic development step of our country. Therefore, starting from system and no-system, the paper sets up incentive and constraint mechanism according to the combination of material incentive and spirit incentive, long-term benefits and short-term benefits, system together with organize constraint and constraint by himself/herself, in order to solve the problem of agency and individual objective of manager deviating enterprise objective.

因此本文从制度和非制度建设出发，按照物质激励与精神激励相结合，长期利益和短期利益相结合，制度和组织约束与自我约束相结合，构建了对经营者的激励与约束机制，以期解决企业中存在的代理人问题和经营者的个人目标与企业目标相脱离的问题。

The sightline control strategy for bad measure precision is developed, and the control methods for vertical direction, approach direction and station keeping are presented.(2)The safe approach velocities are investigated for cuboid, sphere and cone keep out zone.(3)The design method for optimal trajectory under safety constraint is developed. The cone and cuboid keep out zone can be described using line constraint, and then optimal trajectory design can be translated to line programming problem under line constraint.(4) The design strategy of collision avoidance maneuver is discussed, and the collision avoidance scheme is analyzed for V-bar and R-bar approach.The control and trajectory safety in departure phase are investigated.

1提出了测量误差较大时平移靠拢段的视线控制策略，给出了横向、纵向和悬停的控制方法；(2)针对长方体禁区、球形禁区和锥形禁区三种禁区形式，研究了V-bar逼近和任意方向逼近的纵向安全速度计算问题；(3)提出了安全约束下的最优轨迹设计方法，将冲量和有限推力作用下的最优轨迹设计问题转化为线性规划问题，并给出了将锥形和方形安全区域约束转化为标准线性约束的公式；(4)探讨了紧急避撞机动的设计策略，分析了V-bar和R-bar接近的紧急避撞机动方案。

Objective: To study the effect of polycythemia on blood oxygen saturation.

裴蕾目的：观察RBC剧增而引起的高粘血症对血氧饱和度的影响。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。