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Algorithms of task decomposing and service scheduling are proposed by using directed acyclic graph and high level stochastic Petri net.

由于OGSA认为"一切都是服务"，包括计算资源、存储资源、网络、程序、数据库、仪器设备等在内的资源也是一种服务[3]。

At first,as weintroduce the concept of gauge function for stochastic to discuss the local time ofadditive Lévy process,so we get a necessary and sufficient condition for theexistence of the local time for a class of additive Levy processes.

本文主要在以下几个方面有所创新：第一，由于引入了规范函数来讨论可加Lévy过程的局部时，因而取得了比其它同类文章更好的结果：对一类可加Lévy过程得到了其局部时存在的充要条件。

For the first time, the influence of stochastic gain on the Gordon-Haus effect is studied by adjoint operator method.

首次运用自伴算符方法研究了随机增益对Gordon-Haus效应的影响。

From this,two algorithms to find low degree annihilators of a Boolean function are present:complete searching and stochastic searching.The complete one can not only get all the low degree annihilators of a Boolean function,but also get the algebraic immunity of the function.

利用完全搜索法可以得到布尔函数的所有低次零化子，同时还可以确定该布尔函数的代数免疫度；利用随机搜索法能快速得到布尔函数的任意一个低次零化子。

Therefore, alogical generalization of limit cycle in stochastic models needs to be developed, andinterestingly, the concept of circulation in the mathematical theory of nonequilibriumsteady states [91] actually plays the role.

因此，需要研究随机模型中对应于确定性模型极限环概念的合理推广；而在关于开系统非平衡定态的数学理论[91]中，环流恰好可以扮演这样一个角色。

Assignment Method Required Attributes Required Settings All or Nothing Time none Capacity Restraint Time Iterations Capacity Convergence Alpha Beta Incremental Time Iterations Capacity Convergence Alpha Beta User Equilibrium Time Iterations Capacity Convergence Alpha Beta Stochastic User Equilibrium Time Iterations Capacity Convergence Alpha Beta Function Error System Optimum Time Iterations Capacity Convergence Alpha Beta

表格格式乱了，就这么翻吧） 1。全有全无分配法。所需属性：时间；所需设置：无； 2。容量限制法。所需属性：时间，通行能力；所需设置：迭代，收敛，α，β； 3。增量分配法。所需属性：时间，通行能力；所需设置：迭代，收敛，α，β； 4。用户平衡法。所需属性：时间，通行能力；所需设置：迭代，收敛，α，β； 5。随机用户平衡法。所需属性：时间，通行能力；所需设置：迭代，收敛，α，β，函数，误差； 6。系统最佳法。所需属性：时间，通行能力；所需设置：迭代，收敛，α，β。

Hence matrix analytic method has become an effective and an important method in stochastic model research.

因此矩阵解析方法是随机模型研究的一种有效的和重要的方法。

We give several sufficient conditions of NA and NSD properties of random variables, compare the closeness of distribution functions of order statistics between NA and independent rv's, investigate properties of NSD defined by supermodular functions, study the dependence structure of stationary Markov process and order statistics and their spacings from two samples, establish stochastic comparisons of order statistics of heterogeneous rv's in the hazard rate and the reversed hazard rate orders, and give the first analytic proof of the closure property of the up shifted likelihood ratio order under convolution.

给出判定一组随机变量NA性质的几个充分条件，并给出NA和独立随机变量的次序统计量之间"贴近性"的比较，系统地研究基于特殊函数类所定义的NSD负相依概念，给出一些判别NSD性质的结构定理和一些有用概率不等式。系统研究平稳马氏过程的相依结构。研究两样本次序统计量及其问题隔的相依结构。在失效率、反向失效率序和似然序意义下给出非齐次随机变量次序统计量的比较。给出上漂移似然序卷积封闭性的第一个解析证明。

It is generally difficult to get analytical solutions of the stochastic differential equation's water quality model. What is more, as to the issue like the initial boundary result of a convection-dispersion equation, it is even more difficult to change the random factors into the uncertainty.

NSFEM法是把Neumann展开式引入以解决矩阵求逆的效率问题，如果对每一次随机抽样，只需形成刚度矩阵，进行前代、回代以及矩阵乘和矩阵加减，而无需矩阵分解，则可大大减少工作量。

It is difficult to get the best inventory control policy of stochastic inventory system by analytical method.

有效的库存控制策略可以降低库存成本，从而降低企业的经营成本，提高企业在市场中的竞争力。

He and Nina moved to California and lived at 2005 Ivar Street, Apt.

他和Nina搬到加州，并在2005年伊瓦尔街，公寓生活。

Droperidol （ potently inhibits transfected HERGchannels and this is the probable mechanism for QT prolongation.

氟哌利多有效地抑制了转染的 HERG 钾通道，可能是 QT 间期延长的机制。