查询词典 Powell

This paper adopts Powell′s direct search method and sequential unconstrained minimization technique in the multiple-object optimum rigidity of open-back inclinable press.

本文采用 Powell 直接搜索法和序列无约束极小化技术，对开式压力机的刚度进行了多目标优化设计，所得结果表明，采用本文介绍的优化方法对提高开式压力机的精度效果明显。

For example, a Web site recommending the use of ipecac to prompt vomiting after someone has ingested poison is running counter to the latest advice from the American Academy of Pediatrics, which recently advised against it, Powell noted.

Powell说，例如，一个站点推荐当有人食用了毒物的时候使用吐根来刺激呕吐，这种违反了美国儿科学会最近的建议，他们反对这种方法。

Therefore, from the theoretical point of view, a solution of the constrained problem and the corresponding values of the Lagrange multipliers can be found not only by the well known method of multipliers but also by performing a single unconstrained minimization of the Hestenes-Powell augmented Lagrangian function on the product space of problem variables and multipliers.

因此，从理论的观点来看，原约束问题的解和对应的拉格朗日乘子值不仅可以用众所周知的乘子法求得，而且可以通过对Hestenes-Powell增广拉格朗日函数在原问题变量和乘子变量的积空间上执行一个单一的无约束极小化来获得。

In Chapter 4, a symmetric triangular partitioned secant method for solving large scale sparse unconstrained optimization problems is constructed, which is a combination of a secant method and a finite difference method, and depends on a consistent partition of the columns of the lower triangular part of the Hessian matrix; it reduces the number of gradient evaluations required by Powell and Toints algorithm (the indirect lower triangular substitution algorithm) by one at every iterative step.

此算法是基于稀疏Hesse阵的下三角部分的列的相容分划的基础上建立起来的，把割线法和有限差分法有机的结合在了一起，在每次迭代中，把由Powell和Toint的算法所需要的梯度赋值次数减少了一。

In this thesis, the location algorithm is particularly introduced, which uses the POWELL algorithms to solve the transformation of matrix.

文中详细地介绍了定位算法的实现过程，采用POWELL方法对坐标转换矩阵进行了求解。

The head of the federal government's G ulf C oast reconstruction effort , Donald Powell , says the president will have a message for the people of the GulfCoast.

联邦政府墨西哥湾重建方案负责人 Donald Powell 说，总统将对墨西哥湾人民发表演说。

The synthetic punitive function combining internal point and outer point, and Powell optimal techniques are used in the control system to find the optimal point of the objective function among the real conditions. The AOCPF package has run for about one week in the semiselective flotation circuit of this plant.

为了在约束条件规定的现实范围内找到目标函数的最佳点，作者将内点法与外点法相结合的混合罚函数法、Powell优化方法引入了浮选过程的自适应优化控制。

And where did Powell go to enjoy all that money?

Powell又是如何挥霍这些钱的呢？

One of the most memorable is Colin Powell stating "I am being treated well by my captors."

最难忘的之一是Colin Powell说到"我正被我的追捕者款待得很好。"

I don't know whether I was more bothered by the ignorance of the customers or by the company taking advantage of the ignorance of the customers, says Kehinde Powell, who worked during 2005 as a preparer at a Jackson Hewitt office in Columbus, Ohio.

我不知道我该因为客户的不知情而感到难过，还是该因为公司利用客户不知情来赚钱而感到难过 Kehinde Powell 说。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。