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问题是     
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  problem is a
     The meaning problem is a core in the philosophy of language.
     意义问题是语言哲学的核心问题,也是语言哲学争论的焦点。
短句来源
     This problem is a typical scheduling model in JIT(Just-In-Time) production environment.
     此问题是 JIT(Just- In- Time)生产环境下的典型调度模型。
短句来源
     Job-shop Scheduling Problem is a typical NP problems ,which is one of the hardest combinatorial optimization problem.
     作业车间调度问题(Job-shop Scheduling Problem,简称JSSP),是一个典型的NP难问题,是最困难的组合优化问题之一。
短句来源
     x(0)=x(1)=0,x″(0)=x″(1)=0 ,where λ is a constant, and a satisfies condition (H), such an argument is proved that the singular boundary value problem is a linear self adjoint completely continuous differential operator. The spectral of the singular boundary value problems of the fourth order linear differential equation is obtained by means of the spectral theory of linear self adjoint completely continuous operator.
     x(0 ) =x(1) =0 ,x″(0 ) =x″(1) =0 ,其中λ是常数 ,a满足假设 (H) ,首先证明奇异边值问题是线性自共轭全连续微分算子 ,然后利用线性自共轭全连续算子的谱理论给出了四阶线性微分方程的奇异边值问题的谱
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     El Farol Bar problem is a typical model of the category.
     El Farol Bar问题是这类系统的一个典型模型。
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更多       
  problem lies
     Role orientation of the government is of vital importance after China's entry into the WTO,whose basic problem lies in the relations between the government and the markets.
     加入WTO后政府的角色定位至关重要,基本问题是政府与市场的关系。
短句来源
     The practice demonstrated that provided control was proper it was able to get same effect as one-step pretreatment with H2O2. The problem lies in yellowing during storing.
     实践表明只要较好地控制,完全能达到H2O2一浴法的效果,问题是贮存过程中略有泛黄。
短句来源
     This research shows that to study the nature and feature of social crime with quantitative method, the key problem lies in the reliability of criminal statistical pattern and the selection of parameter.
     研究表明,用定量的方法研究社会犯罪性质与特征,关键问题是犯罪统计规律的可靠性与参变量的选择。
短句来源
     Followed by introduction of its developing tendency in foreign countries and its present condition in our domestic commercial banks, the paper gives a thought-provoking analysis of the current situation and existing problems of intermediate business in Z Commercial Bank, pointing out that the main problem lies in the inadequate attention, organizing and managing system in lack of resultant force and unreasonable structure of products and deficient sales force.
     在分析了国外商业银行中间业务发展趋势和我国商业银行中间业务现状后,对Z商业银行的中间业务现状及存在的问题进行了剖析,指出Z商业银行中间业务存在的主要问题是重视程度不足、组织管理体系未能形成合力、产品结构不合理、营销力度不足。
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     Internal management, whose core problem lies in the management of people, which makes management of human resources become more and more important in the mind of modern managers.
     内部管理中的核心问题是对人的管理,这就使得人力资源管理在现代管理者心目中的地位更加重要。
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更多       
  problem is an
     Subject problem is an important field of problem solving study.
     问题解决研究一直受到心理学界和教育界的普遍关注,学科问题是问题解决研究的一个重要领域。
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     The nonlinear l_1 problem is an important non-differentiable unconstrained optimization problem.
     非线性l_1问题是一个常见的无约束不可微优化问题,它经常出现在网络和系统设计等实际问题中。
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     The BMI problem is an NP hard problem, and an algorithm that based on chaos optimization is designed for solving it.
     BMI问题是NP难问题,对此设计了一种基于混沌优化的算法进行求解,所设计的算法更有效地收敛到全局最优解。
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     Contact problem is an important portion in the tribological problem analysis,because the non linearity of contact problem makes the engineering analysis and research relatively difficult.
     接触问题是摩擦学问题分析中重要的一部分 ,由于接触问题的非线性 ,使得工程分析研究较为困难。
短句来源
     Traffic problem is an important problem all over the world, it has seriously influenced the society, how to solve it is the key problem people pay attention to, now,?
     交通问题是全球普遍关注的重要问题,交通问题已严重影响了人类社会经济的正常运行,为此,采用最新的科学技术成果,旨在解决交通问题的“智能运输系统”的研究正在全球范围迅速兴起。
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更多       
  is a problem
     Family violence is a problem for the present world countries.
     家庭暴力问题是当代世界各国普遍面临的比较棘手的问题。
短句来源
     The Optimization design of switched reluctance motor drives(SRD) system is a problem which is a nonlinear programming with many constraints and many discrete variables. This paper studies the discrete (mixture discrete)variable programming and presents an improved pattern-search method.
     开关磁阻电动机驱动(SRD)系统的优化设计问题是一个带多个约束条件的非线性规划,而且变量的取值具有离散性,本文重点对SRD系统的离散(混合离散)规划问题进行了研究,并提出了一种适合于离散规划的模式搜索法改进方案,针对优化中约束条件众多且非线性程度高的特点,提出了一种可行点加速寻找方法;
短句来源
     A problem in the information system and knowledge discovery ,is a problem of processing optimal knowledge reduction.
     最佳知识约简问题是信息系统与知识发现中面临的一个重要问题.
短句来源
     The behavior of the finance shifting its responsibility onto the central bank is a problem,which deserves being taken seriously in the coordination of financial and monetary policies.
     财政对中央银行的责任转稼问题是财政政策与货币政策协调配合中值得高度重视的一个问题。 在市场经济条件下,财政政策和货币政策是一个国家干预和调节经济的最重要的宏观经济政策。
短句来源
     The mission of scheduling reconnaissance satellite is to allocate satellite system's resources optimally under temporal and dimensional constraints,it is a problem of objective scheduling with multiple constraints.
     对地观测卫星调度问题是指如何利用有限卫星资源,在时间、空间等多约束条件下提高对地观测任务执行效率,是一个多约束条件下的目标满足问题。
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      problem is a
    The zonal linearization method is a development of the scheme described in [2-4], and the method of solving the Cauchy problem is a generalization of the methods described in [4-13].
          
    In this formulation the problem is a similarity one, but permits a complete analytic investigation with a qualitative analysis of the process on the basis of the exact solutions.
          
    The Riemann boundary problem is studied under the assumption that the coefficient of the problem is a complex orthogonal matrix.
          
    The eigenfunction system of a hydrodynamical problem is a Riesz basis
          
    In the paper we study a boundary value problem for a hyperbolic equation with two independent variables; this problem is a generalization of the well-known Darboux problem.
          
    更多          
      the thing is
    The usability is a dynamic order of the praxis in which the thing is embedded and in which we are ourselves de-centered.
          
    Part I, 'The Philosopher's Desire: Making an Exception, or "The Thing Is...''', recounts Strauss' central account of the complex relationship between philosophy and 'the city'.
          
    Part I, 'The Philosopher's Desire: Making an Exception, or "The Thing Is...''', recounts Strauss' central account of the complex relationship between philosophy and 'the city'.
          
    Again both wires are equivalent and the thing is reversible.
          
    And the thing is you've got to keep contacting people.
          
    更多          
      problem lies
    At that, the main characteristic of the optimization problem lies in the specific parameterized representation of the set of the control laws from which the optimal solution is selected.
          
    Yet another problem lies in interpreting negative cumulant-moment values, which are considered as an indication of a changeover from attraction to repulsion in sets of specific particle content.
          
    One type of problem lies in trying to anticipate what level or degree of cultural involvement is likely to be met with.
          
    The real problem lies in how one should distinguish between the different relationships with perception of singular beliefs and of universal beliefs, and in how singular beliefs can provide justification for universal beliefs.
          
    It is concluded that a solution to this dual isolation problem lies in a semi-active mount capable switching its properties from 'operation-optimum' to 'seismic-optimum' at the onset of a seismic event.
          
    更多          
      problem is an
    The thermistor problem is an initial-boundary value problem of coupled nonlinear differential equations.
          
    A common solution to this problem is an employment of BLAST, which may miss significant alignments, or an exhaustive Smith-Waterman algorithm, which is very time-consuming.
          
    Since the problem is an ill-posed one, the Tikhonov regularization proves useful.
          
    The solution of the problem is an oscillatory decaying function of the monomer concentration as the total dye concentration in the monolayer increases.
          
    The Sturm-Coulomb problem is an integrable one since its symmetry group is O(4).
          
    更多          
      其他


    In ordinary sampled-data control systems the system response to a step input can reach its equilibrium state only within n or more sampling intervals (n is the order of the controlled plant). In this paper multiple-impulses are used, instead of ordinary simple impulses, to speed up the system response. In such sampled data systems the system response to step input can reach its equilibrium state within less than n, even one, sam-pling intervals. Methods of design of such kind of sampled-data systems and their...

    In ordinary sampled-data control systems the system response to a step input can reach its equilibrium state only within n or more sampling intervals (n is the order of the controlled plant). In this paper multiple-impulses are used, instead of ordinary simple impulses, to speed up the system response. In such sampled data systems the system response to step input can reach its equilibrium state within less than n, even one, sam-pling intervals. Methods of design of such kind of sampled-data systems and their com-ponents are discussed. In the last part of the paper methods of compensating sampled data systems with dead time elements is also considered.

    在通常的脉冲控制系统中,当输入信号是阶跃函数时,系统的过渡过程至少在n个采样周期内才能完全结束(n是控制对象的阶数).文中考虑了采用宽度不等的多拍脉冲代替通常的单拍脉冲以加快系统的过渡过程.在采用多拍脉冲以后,系统的过渡过程可以在少于n个采样周期内,甚至在一个采样周期内完全结束.文中叙述了这种脉冲系统的综合方法,也讨论了系统中有关组成部分——脉冲组成器和校正装置——的构成方案及其参数的计算方法.最后并考虑了由于时滞引起的对系统动态特性有害影响的补偿问题.文中举有例题,对文中各节内容作必要的说明.

    In this paper the general synthesis problem of optimal control systems with the criterion of transient responses as a positive integral functional (3) is discussed.In the first part it is assumed that the motion of controlled object is described by a system of ordinary differential equations and that the final states of the system form a bounded and closed convex region in n-dimentional euclidian phase space. A method is proposed for finding all optimal control functions which lead any starting state into the...

    In this paper the general synthesis problem of optimal control systems with the criterion of transient responses as a positive integral functional (3) is discussed.In the first part it is assumed that the motion of controlled object is described by a system of ordinary differential equations and that the final states of the system form a bounded and closed convex region in n-dimentional euclidian phase space. A method is proposed for finding all optimal control functions which lead any starting state into the given final region of states. Some conclusions are obtained from the maximum principle by using transversal conditions of optimal trajectories in terminal points, and the particular properties of the stated problem are pointed out. The case of linear dif-ferential equations with integral quadratic functional criterion is investigated in detail.Further, in the second part the fundamental properties of isoloss regions, the rela-tions between the isoloss region and optimal control functions are indicated. As a direct result a partial differential equation determining the optimal loss-function J (x) is found and the connection between function J (x)and optimal vector control function u (x) is also stated. The methods proposed are practically the extension of the me-thods used by us for designing time optimal control systems as seen in [5, 6 ,7].Finally, an example is illustrated with optimal trajectories shown in phase plane.The necessary numerical data is calculated by an analog computer with high accuracy.

    文中研究了具有公式(3)表示的一般正积分泛函的最优控制系统的综合问题.在第一部分中研究了具有控制参数的一阶微分方程组.控制系统的终点状态为n维相空间内的某一逐段光滑边界的闭性区域Ω.文中指出了根据极大值原理和轨道终点的横截条件寻找引到Ω的所有最优轨迹的方法.这里详细地研究了具有二次泛函和被积函数中不明显含有控制参数的质量指标泛函的线性方程情况.在文中第二部分研究了等损耗区的主要特性.指出了等损耗区与最优控制函数之间的关系.导出了求算最优损耗函数J(x)的偏微分方程,以及这一函数与最优控制函数u(x)的关系.上述方法是我们曾在文献[5,6,7]中用过的最优快速系统的综合方法的推广.文章最后举有例证.

    Analysis of the low frequency response of automatic balancing D-C amplifier with mechanical chopper is illustrated by a typical circuit in this paper. The analysis of dynamic response of the modulation and the demodulation circuits and the auxiliary carrier wave amplifier have been considered more in details. The analysis is based on solving difference equations since the intrinsic working process behaved by the M-D M circuits using mechanical chopper is more accurately described by difference equation other...

    Analysis of the low frequency response of automatic balancing D-C amplifier with mechanical chopper is illustrated by a typical circuit in this paper. The analysis of dynamic response of the modulation and the demodulation circuits and the auxiliary carrier wave amplifier have been considered more in details. The analysis is based on solving difference equations since the intrinsic working process behaved by the M-D M circuits using mechanical chopper is more accurately described by difference equation other than by differential equations.

    本文結合一个典型线路对带有机械振子的自动稳零直流放大器的低頻特性,进行了分析,并且着重分析了調制解調輔助放大器对緩变信号的频率响应。所用方法是差分方程求解法,因为用差分方程来描述具有机械振子的調制解調线路的固有工作过程,要比用相同的初始条件的微分方程来描述更为准确。文中推导出調制及解調綫路的調制系数k_M、解調系数k_(ДM)以及它們的传递函数。此外,对放大調制波的阻容耦合放大器也进行了分析。分析結果說明,如果放大器耦合迴路的参数选择得合理吋,則此放大器对緩变信号的調制波可作为理想放大器来处理。文中所得結果可作为設計該类型放大器时选择参数的参考。此外,本文对于采用自动稳零直流放大器作运算放大器时可能产生的持續低頻自激振蕩問題,也进行了討論。

     
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