查询词典 problem on obstacle

The maximum network flow problem is not only a classical combinatorial optimization problem, but also a special linear programming problem.

网络最大流问题是一个经典的组合优化问题，同时也是一个特殊的线性规划问题。

the container loading problem with wide practical application is a combinatorial optimization problem, and is np-hard problem.

集装箱装载问题是一种有广泛应用背景的组合优化问题，它属于np-hard问题。

QoS multicast routing problem is a nonlinear combinatorial optimization problem,which has been proved that the problem is NP-complete problems.

QoS组播路由问题是一个非线性的组合优化问题，已证明了该问题是NP完全问题。

Although the IPv4 has already obtained to make the person is hard to place the success of the letter, along with lately- apply flow out continuously now, the traditional IPv4 agreement is hard have already supported an Internet to extend further with the characteristic of the new business, among them the most attractive with the most remarkable of can improve it to be placed in in its address space of size, expand a sex problem,manage a problem and choose road in addition a difficulty,service of the consignation and the safety problem of the improvement and the service quality characteristic is also convex appear, so the IPv6 transitions become no time for waiting now.

虽然IPv4已经取得了令人难以置信的成功，但随着新应用的不断涌现，传统的IPv4协议已经难以支持互联网的进一步扩张和新业务的特性，其中最显眼和最值得注意的可改进之处在于其地址空间的大小，除此之外扩展性问题、管理问题、选路困难、服务的改进和服务质量特性的交付以及安全性问题也凸现出来，因此现IPv6过渡变得迫不及待了。

The user's utility is a function of his data throughput, thus the bandwidth resource utilization problem is modeled as a utility based constrained maximization problem, called a system problem.

通过设置站点吞吐量的对数效用函数，将带宽资源的有效利用问题建模为系统效用最大化问题；应用最优化理论将此系统问题等效为可分布式求解的用户问题，即各站点只须独立选择最大化其净效用的竞争参数，则系统整体效用也获得最大化。

An exceptional condition is a problem that divvents the continuation of the method or scope that you're in. It's important to distinguish an exceptional condition from a normal problem, in which you have enough information in the current context to somehow cope with the difficulty. With an exceptional condition, you cannot continue processing because you don't have the information necessary to deal with the problem in the current context .

异常条件是阻止你的方法正常运行的一个问题，在普通的问题当中分别出这些异常的条件是很重要的，对于普通的问题在当前的环境中你有足够的信息来应付这个难题，但是对于一个异常条件你则无法解决因为在当前的环境中你没有足够的信息来处理这个问题。

Keywords Closed convex cone;gradient projection method;Least-squares solution;Inverse matrix problem;Inverse eigenvalue problem;Matrix completion problem;Optimal approximation

Article From 湖南大学；应用数学博士论文 2005年度闭凸锥；投影梯度法；最小二乘解；矩阵反问题；矩阵逆特征值问题；矩阵完全化；最佳逼近

In the first part, convex duality method linearizes convex wealth equation, and the introduction of Lagrange multiplier converts original problem to an unconstrained static optimum problem. At last, we obtain another equivalent optimum problem with convex control domain.

文章前一部分运用凸对偶的方法先将财富方程线性化，Lagrange乘子的引入使最优问题等价与一个无约束的静态最优问题，最后转化为一个凸控制域的最优问题。

To increase the running speed of the collision detection algorithm, a new approach is proposed, which uses convex Bounding Volume Hierarchies to express convex polyhedron. Thus the distance problem of two convex polyhedrons is come down to a nonlinear programming problem with constraints. The nonlinear programming problem can be solved by simulated annealing genetic algorithm.

为了提高碰撞检测算法的速度，提出用顶点的凸包表示凸多面体，将两个凸多面体间距离的问题归结为一个带约束条件的非线性规划问题，利用模拟退火遗传算法对该问题进行求解。

For the first task, unnecessary holes inside of the model should be avoided, and non-interest front regions should be excluded. For the second one, three fundamental problems of reconstruction: the correspondence problem, branching problem, and tiling problem should be handled properly.

前者主要考虑如何避免提取模型内部不必要的空洞、和快速去除非兴趣区域的骨质影响；后者主要考虑如何解决表面重建中的轮廓对应和分支问题、以及如何提高轮廓拼接的准确性与效率。

The Porsche Owner: But it's my car!

可，这是我的车呀。

LOX_83}{Oh, another bunch of wackos.

{LOX_83}{呃，又一群怪人。