查询词典 uncertain

We propose a two-stage stochastic programming model with uncertain demand.

建立了消费者需求不确定状态下的两阶段随机规划模型。

The probability of failure of uncertain structures with stochastically varying properties subjected to dynamic random loads is studied.

对受有动态随机载荷的含有随机参数的不确定结构的失败概率或可靠度进行了研究，使之在工程实际中固有的结构参数的不确定性以及其对结构响应和可靠性的影响进行了评价。

The inventory cost is a primary component of the supply chain cost, and the method for multi-echelon inventory optimization and control must be adopted for the sake of the entire supply chain optimization and control, t present, papers on multi-echelon inventory systems have solved some problems, but they still have limitations. Firstly, they assumed that leadtime are constants. In practice, as the unknowable incidents exist in production, transportation and distribution processes, leadtime usually are uncertain. Secondly, there exist the hypotheses of totally back orders or completely lost sales under the condition of stockout in most literatures. Thirdly, the existing two-echelon inventory approximate model optimum always fixes one variable in the inventory strategy, and then seeks the optimal in the remained parameters, which makes the result can not be the best outcome.

目前有关两级库存优化控制的研究文献大多是假设提前期为常数的基础上建立模型，然而现实中由于供应链上各节点的库存不确定性以及运输、生产、交货等环节的不可预知性，使得提前期在多数情况下是不确定的；而且大部分文献都是假设缺货情况下要么完全延迟交货，要么完全损失销售，很少有考虑部分损失销售情况下库存优化控制的；另外，现有的两级库存近似模型的优化大都是固定一个库存策略中的变量，对余下变量寻优，其优化结果不可能是最优结果。

Sara Avant Stover: Everyday Yoga: Find Your Footing, Even In Uncertain Times

莎拉·艾文特·史多佛：每日瑜伽：找到你的立足点，即使是在彷徨的时

Firstly, a necessary and sufficient condition for an uncertain multi-channel descriptor system to be robustly stabilizable with a specified disturbance attenuation level is derived in terms of a strict nonlinear matrix inequality.

主要考虑分散H输出反馈控制问题。推导出了使不确定多通道奇异系统能鲁棒稳定且满足一定的性能指标的充分必要条件，没有等式约束的非线性矩阵不等式条件。

He went on, 'At the time, in spite of our indignation, there was nothing we could do to counteract such strong-arm, unscrupulous tactics, given Mr Teixeira's connections with Mr Havelange, the project's advanced planning stage, the fact that I was about to start an uncertain fight for my own life, and the fact that Mr Machline's sons had a troubled business empire to take care of.

赫森继续说："尽管当时我们很愤怒，但没有任何能力去反抗如此强大的、肆无忌惮的手段，因为：第一、特谢拉和阿维兰热的关系；第二、项目已经计划到了很深入的地步；第三、我将开始为自己生活打一场不确定的战斗；第四、马赫林先生的商业帝国现在困难重重，而这个烂摊子要他的儿女们来收拾。"

The paper implemented the output regulation of a class of nonlinear systems under a supervisory control scheme. The process is a strict-feedback structure system with uncertain constant parameters.

摘 要：在监督控制方案下实现了一类非线性系统的输出调节，过程是全局Lipschitz的严格反馈形系统，含有不确定的定常参数。

By representing the uncertain parameters as interval numbers, the governed equations of the structure are obtained by means of the interval finite element method.

基于区间模型的结构静力分析将结构系统中的不确定性参数用区间数来表示，建立了系统的区间静力有限元控制方程。

By representing the uncertain parameters as interval numbers, the interval dynamic characteristic equations and the dynamic governed equations of the structure are built by means of the interval finite element method.

基于区间模型的结构动力分析将结构中的不确定性参数用区间数来表示，建立了系统的区间动力特征方程和动力控制方程。

Now the history of Japanese sumo Yokozuna a total of only 68; sumo wrestling with many different sports, and its grading is uncertain, should not participate in the competition or lead to the failure of grade decline.

现在日本相扑史上的横纲一共只有68位；相扑与许多运动不同的，它的等级是不定的，会应不参加比赛或失败而导致等级下滑。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。