查询词典 distributed data base

Chapter 1 discusses multiple parameters simultaneous estimation of a two-dimensional distributed parameter system; First, the distributed parameter system is transformed by applying a Laplace transform; Then by defining the objective function combined with the principle of optimal control, the problem of parameter estimate is converted into the problem of optimal control.

第一章讨论了一类二维分布参数系统的多参数同步辨识问题。首先利用Laplace变换对原系统方程进行了转换；然后结合最优控制原理定义目标泛函，将参数辨识问题转化为最优控制问题。

as an emerging of distributed artificial intelligence, the intelligent agenttechnology is believed to provide a new method for the modeling, analysis and control of a category of systems which are chronically, spaciously or functionally distributed.

智能代理方法作为分布式人工智能的重要组成部分，被认为可能成为一类具有时间、空间或功能分布性的系统提供建模、分析和控制的方法。

The other aspect of the finit dimeasional robust adaptive control on a class of stochastic distributed parameter system in this paper was based on the above mentioned ground and researched the class of stochastic distributed parameter system which operator generated a compect self-adjoint semigroup or had point spectral in a stochastic developing equation of one order.

最优炉温参数是由性能指标表示为关于控制类中参数的函数通过优化求得的，而这个函数又是通过在某些已知炉温控制规律下，求钢坯温度分布和性能指标值而获得的。

At the first day after injection, 3H-TdR was distributed mostly in spleen, thymus , femur , liver and small intestine according to their activity; 3H-TdR was distributed mostly in blood, kidney, liver, lung, sperma, brain, spleen , small intestine , muscle , thymus and femur in turn on the basis of their absorbed dose.

注后1天，按单位组织的放射性活度计，~3H-TdR主要分布于脾脏、胸腺、股骨、肝脏和小肠；按组织器官的吸收剂量计，依次为外周血、肾脏、肝脏、肺、睾丸、脑、心脏、脾脏、小肠、肌肉、胸腺和股骨。

The female flower strobilus was mainly distributed in the upper and middle layers, and the male flower strobilus was mainly distributed in the middle and lower layers.

同时球花花量的分布在方位上差异不显著。

Then, it studies the supply chain management system as a complex system to confirm the state existing during operating of the system. After that, it conducts a probability analysis on the state which the system located by applying supplement variable method, and establishes the model of distributed parameter system in a form of partial differential equations. Combining C0 ? semigroup theory in the functional analysis, it conducts a dynamic analysis on the established mathematical model. Using this method, it obtains the mathematical expression of the dynamic solution and the steady state solution, and proves the uniqueness, non-negativity and the asymptotic stability of the system solution. This dissertation applies the Matlab tool and uses two-step, three-step Simpson integral equation to imitate the condition of system solution. Then, it adds possible mode of failure and the optimization adjustment state to the system, based on which it has established the distributed parameter system model which is described by partial differential system of equations. Combining the functional analysis C0 ? semigroup theory, it studies the established mathematical model, and obtains the mathematical expression of the dynamic solution system and the steady state solution. It has proven the existing of uniqueness of the system solution, the asymptotic stability of system solution and the system solution. In addition, it has lying the theory rationale for further analysis and the research on the optimization of system.

本文首先简要综述了供应链理论、可靠性研究、鲁棒性研究以及供应链鲁棒性研究的现状；然后，将供应链系统作为一个复杂系统来分析，确定了系统运行过程中所经历的状态，通过引入补充变量的方法，建立了用偏微分方程组描述的分布参数系统模型，用泛函分析中的C_0 -半群理论得到了系统动态解和稳态解的数学表达式，证明了系统解存在的唯一性、非负性和指数阶渐近稳定性；并借助Matlab工具，利用二阶、三阶辛普森积分方程模拟系统解的性态，并给出系统动态解的仿真图；本文又对上述系统增加了系统可能失效状态和优化调整状态，并在此基础上建立了用偏微分方程组描述的分布参数系统模型，同样用泛函分析中的C_0 -半群理论对所建立的数学模型进行了研究，得到系统动态解和稳态解的数学表达式，证明了系统动态解存在的唯一性、非负性及渐近稳定性，为进一步分析和研究供应链优化奠定了理论基础。

The calculation results show that the normal component of magnetic intensity is symmetrically distributed around the point of the acting force, where the normal component reach the maximum value; while the tangential component is antisymmetrically distributed around the point of the acting force, where the tangential component inverses its direction sharply.

结果表明，空气中扰动磁场的法向强度和切向强度分布特征明显不同，法向强度关于力作用点对称分布，并且在力作用点处达到最大，而切向强度关于力作用点反对称分布，并且在力作用点处有突变；地磁环境下，磁场对位移的影响可以忽略不计；扰动场强与外力成正比。

The emergence of distributed multimedia applications such as teleconferencing, remote education and distributed interactive simulation etc.

随着远程会议、远程教育和交互式仿真等分布式多媒体应用的兴起，组播技术受到网络研究人员的重视。

Among them,73 genera and 36 families,occupies 80.23% of the total number of the genera and 78.26% of that of the families, were tropically and subtropically distributed genera and families, the other 18 genera and 4 families,merely occupied 19.77% of the total number of the genera and 8.70% of that of the families,were temperately distributed genera and families,which suggested that the variation of the altitude might affect the plant composition of communities in some degree.

热带性成分科、属与温带性成分科、属各有36科、73属和4科、18属，分别占样地种子植物科、属总数的78.26%、80.23%和8.70%、19.77%，表明热带性区系成分在群落中的优势地位，同时一定数量的温带成分的入侵，反映出海拔高度变化在一定程度上对植物区系组成的影响，表明鼎湖山山地常绿阔叶林具有向中亚热带常绿阔叶林过渡的特点。

Besides, This paper also discusses the implementation mechanism of distributed transaction processing and the distributed recovery of the model.

同时，本文还重点讨论了模型中的分布式事务处理和分布式恢复的实现机制。

Bob Eckert has been chairman and chief executive of Mattel for eight years.

美泰董事长兼首席执行官鲍勃·埃克尔特在任已8年。

The outlook for honors and disgraces carries on and surpasses the traditional outlook for honors and disgraces theoretically, and carries on and develops the theory of construction of socialist mora...

社会主义荣辱观的提出在理论上是对传统荣辱观的一次继承和超越，是对社会主义道德建设理论的继承和发展，在实践上有利于形成良好的社会风尚。