目标描述
- 与 目标描述 相关的网络例句 [注:此内容来源于网络,仅供参考]
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In this scheme, the description of unitary evolution and quantum measurement is unified and the quantum control operation is represented by probability state transition. The algorithm works as follows. At first a measurement is applied on the system. If the state after collapse is not the desired eigenstate, then system evolution will go on. After a period of time, the system is measured again. The process will go on like this until we get the desired eigenstate by measurement. Finally the system is driven to the target state with admissible control as before.
4把本征态能控性概念进一步向前发展,提出了概率能控性的概念,将幺正演化和量子测量这两种量子控制手段统一的用概率状态转移来描述,并针对一类特殊的本征态能控的系统,提出了幺正演化和测量交替进行的量子反馈控制策略:如果单步测量所得到的本征态不是期望的本征态,则让系统以这一本征态作为新的初态进行下一步的幺正演化,然后在适当的时候再次测量,让系统塌缩到某一本征态,如此重复进行,直到达到期望的目标态为止。
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From the lifespan of relay point of view, a reliability criterion was provided based on dynamic characteristics of anti-forces. Mathematical model of tolerance design with reliability was set up under usage of "stress-strength interference method", taken some critical dynamic characteristics as identification objects such beginning of contact separation speed, speed of collision and gag bit impact velocity. This model showed that lower values of characteristic parameters center and quantitative descriptively relationship between tolerance and product reliability. Multi-objective optimization model of relay tolerance distribution was completed when some factors such as reliability, processing costs and its feasibility into consideration. Based on Analytic Hierarchy Process to determine weight coefficients of various objectives, and usage of simulated annealing, this study performed optimal reliable tolerance allocation of space electromagnetic relay, and then key technology segments were analyzed, accompanying its course measured by controlling chart.
从继电器电寿命的角度,基于动态吸反力特性的配合提出了继电器的可靠性判别准则;在此基础上以触点分离初速度、触点碰撞速度以及衔铁碰撞速度等关键动态特性为判别对象,采用"应力-强度干涉法"建立了继电器可靠性容差设计数学模型,给出了下位特性参数中心值及其容差与产品可靠度之间的定量描述关系;综合考虑可靠度、加工成本及加工可行性等因素建立了继电器容差分配的多目标优化模型,基于层次分析法确定了各目标的权重系数,并采用模拟退火法实现了航天电磁继电器的可靠性容差最优分配;研究了继电器的关键工艺环节,并通过控制图对其过程能力进行了分析。
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Embedding the gradient direction search and new kinds of evaluation functions into the Genetic Algorithm, a special hybrid Genetic Algorithm with mutation along the weighted gradient direction to solve non-linear programming problems is developed. Then in Chapt 4, a type of nonlinear programming problems with fuzzy objective and fuzzy resources constraints is discussed, in which the objective is ill-defined and the resources possess two different types of fuzzy resources, i. e., tolerance and imprecision. By way of description and formulation of fuzzy objective and fuzzy resources, the problem with fuzzy objective and two different types of fuzzy resources is modelled into a fuzzy nonlinear programming model FO/RNLP and interpreted as three equivalent alternative crisp model to reflect the variety of the environment and the subjective and preference of the decision maker .
本文首先针对遗传算法在求解非线性规划问题中存在的问题,首次提出非可行点/染色体的主导准可行方向,准可行方向,及非可行点属于可行域的可行度等新概念,借助于模糊思想,提出了描述和度量非可行染色体的新方法;通过嵌入非可行染色体的信息于评价函数中,提出了三种新的评价非可行染色体的评价函数;把传统的启发式方法-梯度方向搜索和新的评价函数嵌入到遗传算法中,提出了一种沿加权梯度方向变异的新型混合式遗传算法;第四章针对生产实际中非清晰定义的模糊目标和两种类型的模糊资源,建立了一类连续型模糊目标/资源约束非线性规划问题的模型FO/RNLP。
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With the experiments done in this research, effects on visual performance at mesopic region were described, which belongs to the necessary basic research work for developing the new mesopic system.
本论文研究通过选用不同的照明水平、目标大小和目标偏心度的条件进行实验,其研究成果能实现对影响中间视觉状态下视觉功能的一些因素的描述,这是建立中间视觉光度学所必须解决的基础研究工作。
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Synthetically considering these characteristics, the method of freeway management and control are presented according to four aspects: system objective orientation and concept design, system demand and requirement analysis, system data management and network structure, traffic control and accident detecting theory as well as its application. Function and structure of system are delimitated from the point view of integration. Construction and function demand of subsystem are analyzed and basic implement projects are presented. In this thesis, system data flow and management method and target which based on system network topology structure and equipment demand are described. Traffic modeling ideology and the process of making dynamic model as well as accident detecting program are presented with centralized and distributed traffic control theory in detail, then freeway ramp control theory which based on predictive model and its theoretic pattern are explored. Finally, based on the object oriented programming, program of accident detecting and checking on freeway is developed by using visual C++ as tool.
论文综合考虑高速公路交通管理系统的上述特征,分别从系统目标定位及概念设计、系统需求分析、系统数据管理及网络结构分析、交通控制与交通事件检测理论与应用四个层面,对高速公路交通管理与控制问题进行了系统阐述,界定了系统的功能及各功能的实现要求,并从系统集成角度划分了系统的结构;分析了各子系统的信息、功能、建设等方面的需求,给出了基本实施方案要求;对系统数据流程进行了描述和梳理,提出了数据管理的方法、目标及措施,分析、设计了系统网络拓扑结构及设备需求;阐述了交通模型的建模思想和动态交通模型的建立过程,对集中式和分散式全局交通控制理论进行了详细的分析,提出了基于预测的高速公路匝道控制理论,并对理论模式及相关的问题进行了研究,分析了高速公路事件检测系统,并采用面向对象的编程思想,以Visual C++为编写工具,开发了高速公路事件检测系统分析软件。
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In " The Secret Curse of Expert Archers ", New York Times columnist Katie Thomas describes the strange affliction known as "target panic", which causes world-class archers to inexplicably lose the ability to control when they release an arrow at a target.
在&射箭高手的秘密诅咒&一文中,纽约时报专栏作家Katie Thomas描述了一种奇怪的痛苦情绪,它广为人知,人们称之为&目标恐慌&。当世界顶尖的射箭高手向目标发出一箭时,这种情绪会导致他们失去控制能力,如此现象让人费解。
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This article introduces testing maturity model developed by Illinois Institute of Technology and describes the structure of TMM, behavioral characteristics of organizations at the five testing maturity model levels,the maturity goals, subgoals, also illustrates the correlation between the testing maturity model and the software capability maturity model, and authors consideration on TMM.
介绍了美国Illinois Institute of Technology开发的测试能力成熟度模型,给出TMM的结构,描述了软件组织5个测试成熟度等级的行为特征、成熟度目标和成熟度子目标,并说明测试能力成熟度模型与软件能力成熟度模型的关系,以及笔者对测试能力成熟度模型的考虑。
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Terrorists might equally be entirely causeless, or dedicated to a cause so vaguely and metaphysically characterized that nobody could believe it to be achievable. Such were the Russian nihilists, as Dostoyevsky and Turgenev described them.
恐怖分子要么完全没有目标,要么投身于非常模糊的具有形而上学特征的事业,没有人相信这种目标是可以实现的,正如陀思妥耶夫斯和屠格涅夫描述的那种俄罗斯民粹派。
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Based on probability theory, a method for describing and calculating the collision probability between rendezvous and docking vehicle and debris is presented, and the method involves quantitatively analyzing the collision probability using quasi maximum instantaneous collision probability and total collision probability. The method calculating the indexes is developed, and the input required to perform a calculation includes the respective state vectors, position error covariance matrices and physical sizes of objects involved.(3) Two methods to analyze relative trajectory safety between chaser and target are developed, which are 3-sigma ellipsoid based methodology and collision probability based methodology.
1分析了交会对接各阶段面临的主要轨迹安全威胁,阐述了被动和主动安全策略、目标器的交会对接控制区域等保证交会安全的措施;(2)基于概率思想发展了线性和非线性运动情况下飞行器与空间碎片的碰撞判断方法,提出采用总碰撞概率和拟最大瞬时碰撞概率来综合描述飞行器与空间碎片的碰撞危险程度,推导了通过飞行器和空间碎片各自的状态矢量、位置误差协方差矩阵以及形状尺寸来计算碰撞概率的公式;(3)提出了两种分析追踪器和目标器之间相对轨迹安全的新方法:基于3σ椭球的轨迹安全分析方法和基于碰撞概率的轨迹安全分析方法。
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In chapter 3, the characteristics of relative motion of small satellite based on ground station are firstly analyzed, in which using spherical trigometry, the analytic formulas evaluating the longitude ranges of ascending node which can cover the target are deduced with J2 precession. With the solution, the longitude ranges of ascending node limited by the cross-time can be gained. Secondly, a serious of characteristics of small satellite to space station is studied.
在第3章,首先分析了卫星相对地基的运动特性,在地基的运动特性研究中,重点研究了以升交点地理经度来描述所有能覆盖到目标点的轨道,利用球面三角形方法推导了在考虑地球形状J2项摄动影响时,各种情况下能覆盖目标点的轨道升交点经度范围,得到了完整的解析表达式。
- 推荐网络例句
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Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.
在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。
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In fact,I've got him on the satellite mobile right now.
实际上 我们已接通卫星可视电话了
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The enrich the peopling of Deng Xiaoping of century great person thought, it is the main component in system of theory of Deng Xiaoping economy, it is a when our country economy builds basic task important facet.
世纪伟人邓小平的富民思想,是邓小平经济理论体系中的重要组成部分,是我国经济建设根本任务的一个重要方面。