查询词典 combinatorial geometry

The main work of the paper is shown as follows.1 The optimal model of the single and combinatorial hedging based on the constraints of total loss is established.The paper takes the positive profit skenewss as constraint of serious loss\' probability, which the tail of curved shape on density function of the hedging yield elongates right,and the left tail become short.

论文的主要工作如下：(1)建立了基于整体风险控制的单品种和多品种的套期保值优化模型通过套期保值收益率的偏度大于等于零，使得套期保值收益率密度函数的尾部向右拉长，而左端的尾部较短。

In the present study, a gradated-combinatorial screening for antitumor -active microbial strains was carried out by the gradated combination of a 96-well plate lethality bioassay using brine shrimp and a flow cytometric bioassay using mouse tsFT210 cells.

为探索如何快速获取活性菌株的筛选模式，组合使用海虾生物致死法和tsFT2 10细胞的流式细胞术筛选模型，对从青岛前海和胶州湾潮间带海泥、动植物样品中分离的 162株海洋微生物，进行了抗肿瘤活性的分级组合筛选。

But none appears to have the combinatorial rule system of human language, in which symbols are permuted into an unlimited set of combinations, each with a determinate meaning.

但看来他们都没有人类语言这样组合的规则体系，在这系统里符号排列变化成一套无限的组合，每一种都有确定的含义。

The multi-fishing collar is one kind of combinatorial tool for fishing of various sizes of sucker rod coupling,bar and well logging instrument in the interior of the casin tube.It is easy to operate,conveience and muilti-purpose,high efficiency sucker rod fishing tool.

多用打捞筒是一种在套管内打捞各种尺寸的抽油杆、接箍及加重杆和测井仪的组合式打捞工具，该工具结构简单操作维修方便，是一种用途多、高效率的打捞抽油相工具。

To the outside, we mainly study an offer model in which one indivisible civil-engineering project of unknown construction cost is tendered to n tenders. The offer is not the sole decisive factor which decides who will get the contract, the tendering plan and the offer can play an important combinatorial role in the competition, and the winner's offer via the procedure of competitive bidding tends to the symmetric Nash equilibrium in both the probabilistic sense and the economic sense.

对外主要研究完全不合作的投标竞争环境下的n人投标报价决策问题，考虑到报价不是得标的唯一决定性因素，施工方案和工程报价为赢得工程施工合同共同发挥组合效应，一定条件下，报价趋于Nash平衡。

In order to get out from the cockamamie work in road route design for designers, on the basis of studying the internal relations among local schemes, local scheme was decomposed to small unit logic schemes; the directed network was used to represent the topological connection; the united data structure of point-arc was used to express a network graph. Based on the shortest path theory, the combinatorial optimization algorithm that can search optimal logical schemes of some targets in the network graph intelligently and can form the whole scheme automatically was put forward.

为了使设计者从道路线路设计的繁重计算统计工作中解脱出来，在研究了局部方案间内在关联的基础上，提出了将局部方案分解为更小单位的逻辑方案，用有向网络图表示逻辑方案间的拓扑关系，采用节点－弧段联合数据结构来表示网络图；同时基于最短路径理论，提出了在网络图中智能化搜索综合指标最优的逻辑方案集，自动形成整体方案的组合优化算法。

The combinatorial coding number of 64 codons to encode 20 amino acids and the terminate code is very huge.

用N个密码子对m个编码对象进行编码的编码格式是m元N维空间中的一个顶点。64个密码子对20种氨基酸和终止密码子进行编码格式的组合编码数是一个十分巨大的数字。

The article is devoted to a combinatorial problem that determines the defectives from a set of coins with as few steps as possible by given instruments.

本文探讨从一堆硬币中以最少次数用规定的方法挑选出其中坏硬币的问题。

This combinatorial activity makes them somewhat unique as endocrine disruptors.

& &这个组合活动，使他们有些独特，作为内分泌干扰物。

The ANNs models of the periodic defected ground structures and a novel combinatorial nonperiodic defected ground structures with the characteristic of double stop band have been developed in this paper. The structure sizes of DGS and the frequencies are defined as the input samples of ANNs, the parameters of transmission coefficient calculated by FDTD method are sampled and defined as the output samples. For the PDGS with biggish structure sizes the transmission coefficients have the tiny dither owing to abnormal disturbance and the training samples have been smoothed by the least square method and five-spot triple smoothing method.

本文采用神经网络对周期性缺陷接地结构和一种新型的具有双阻带特性的组合式非周期性缺陷接地结构进行分析建模，将其结构尺寸和频率作为输入样本，对FDTD法计算出的传输系数参数进行抽样并将抽样结果作为输出样本，然后采用贝叶斯正则化算法对神经网络进行训练。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。