查询词典 combinatorial sphere

It is considered that combinatorial technique will revolutionarily improve the development of material science.

材料的组合技术发展始于1995年发表在Science上的工作，引起了广泛的关注，随即引发了组合材料研究的热潮。

In this dissertation, we mainly dicuss the applications of semidefinite programming in combinatorial optimization.

本论文主要讨论半定规划在组合优化问题里的应用。

Using semidefinite programming relaxation and randomized rounding, we give the corresponding polyniomal approximation algorithms for some NP-hard combinatorial optimization problems.

我们对于一些NP-难的组合优化问题，采用半定规划松弛和随机舍入的方法设计了多项式时间的近似算法，这些算法的性能比都是目前为止最好的结果。

Using this method, the global risk level of the virtual enterprise is minimized by combinatorial optimization of risk solutions with the constraint straint of risk investment.

该方法能够实现在一定风险费用投入的情况下，通过优化组合风险处理措施，达到虚拟企业整体风险水平最低的目标，是虚拟企业风险规划的科学管理方法。

The distribution property of combinatorial sequences is a basic problem in combinatorics. One of the most important properties is unimodality which includes unimodal, log-concave, log-convex and PF properties.

组合序列分布性质的研究是是组合数学中最原始最基本的问题之一，其中一类重要的分布性质是单峰型性质，包括单峰性、对数凹性、对数凸性和PF性质等。

Among them, one of the most promising seems to be Simulation Annealing that aims to reach the optimization of an objective function by physically analogizing to an annealing process of malerial at high temperature. This involves in a transformation of optimization of a function in continuous domain into a combinatorial optimization in discrete domain, as well as the proper choice of various control parameters such as temperature, iterative number etc.

为此，目前主要采用三种基于随机搜索策略的鲁棒技术，其中模拟退火算法是最有希望的一种，该算法的核心思想是随机模拟物理上的物质退火过程，它主要涉及将连续域优化问题转换为离散的组合优化问题，以及合理地选择各种控制参数、迭代时间等。

METHODS An experimental method was developed which allowed the isolation and culture of GER cells from P1 rat cochleae using a combinatorial approach of enzymatic digestion and mechanical separation.

取出生后第1天的大鼠耳蜗，利用机械分离和酶消化相结合的方法分离出纯的GER细胞，于含10%血清OMEM培基中进行培养。

Methods Using a combinatorial approach of enzymatic digestion and mechanical separation to allow isolation and culture of GER cells from P1 rat cochleae.

方法取生后1d大鼠耳蜗，利用机械分离和酶消化相结合的方法分离出纯GER细胞，分别于无血清和含10％胎牛血清的DMEM培基中进行培养，观察细胞生长特性，并对培养物进行溴脱氧尿苷、鬼笔环肽、Z01、钙视网膜蛋白及肌球蛋白VIIa免疫组化鉴定及扫描电镜观察。

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。

Methods Clinical data of 3 cases of bile duct injury during laparoscopic cholecystectomy were analyzed retrospectively.

回顾总结3例LC术中胆管损伤的临床资料，分析3例胆管损伤的原因及对策。

These techniques are applied to the gobang.

本文将这些技术用于五子棋中。