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The model can be used for distributed superheater thermal calculation, and can provide a base to develop a dynamic distributed parameter model of superheater system.

该模型可以用于过热系统的分布式热力计算,并可为过热系统分布参数动态模型的建立提供必要的边界条件。

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。

More and more practical data in sensor network、communication、Internet flow analysis and Web log etc, are transported from teledata sources. Therefore, we need to construct the middleware of distributed query processing for data streams to support above application.P2P technique is used to build a huge distributed network for the processing of large number of information by internet terminals.

现有的数据流的研究主要为集中式的流数据系统,而数据流的本质是分布式的,越来越多如传感器网络、数据通讯、Internet流量分析和Web日志等的大量数据都来自不同的远程数据源,因此,需要构建分布式数据流查询处理的中间件以支持上述各种应用。P2P技术利用互联网的终端机来建立一个庞大的分布式计算网络,并对迅速涌出的大量信息进行处理。

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。

The time it takes to be served is triangularly distributed with minimum, most likely, and maximum times of 14, 19 and 24 minute, respectively. The time it takes to eat is normally distributed with a mean of 24 minutes and a standard deviation of 5 minutes.

聚会的时间是服从三角分配,其最小时间、最可能时间及最大时间分别为 14 、 19 、 24 分钟,若聚会的时间是使用随机分配平均值为 24 分钟,标准差 5 分钟。

Formulas for calculating internalforces and displacements under the action of lateral forccs, concentrated at thetop, uniformly distributed along its rise or triangularly distributed, are then.given.

与此同时,着重研究了基于单连杆计算图式的简捷分析法,给出了经修正后的内力位移简捷计算公式以及它们的适用范围。

Mainstream distributed application systems are middleware based systems presently, but common middleware lack of real-time capacity.Real-time middleware offers a common soft bus framework eliminated distributed real-time systems unhandy architecture.

实时中间件提供了真正的通用软件总线结构,它可以去掉当前分布式实时系统的不灵活结构,因此中间件与实时系统的结合自然成了今后分布式实时系统的一个重要发展方向。

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推荐网络例句

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。