查询词典 combinatorial optimization problem

The experiments and case study show that the method is feasible and effective, and it can considerably reduce the number of combinatorial test cases for some SUT with definite dependent relationships among input parameters.

实验结果证明该方法是可行和有效的，对于一些输入参数依赖关系明确的被测系统，该方法能够较大幅度地精简全组合测试用例集。

Combinatorial enumeration is a readily accessible subject full of easily stated, but sometimes tantalizingly difficult problems.

组合的列举是充满被容易一个容易可达到的主题说明，但是有时tantalizingly 难的问题。

Besides giving new proofs of known identities, the author establishes several interesting product identities, and discusses briefly applications to combinatorial computations as well as analytic theory of numbers.

在对已有恒等式提供新的证明的基础上，作者发现许多新的有趣的乘积恒等式，并详细讨论它们在组合计算，解析数论等方面的应用。

When we applied Trawler to data from yeast and mammals, 83% of the known binding sites were accurately called, often with other additional binding sites, providing hints of combinatorial input.

我们用Trawler对酵母和哺乳动物的数据进行分析，结果显示83%的已知结合位点被精确识别，而且有其他结合位点，提供了组合输入的暗示。

The structured properties of tridiagonal inverse M-matrices are then studied in detail by using graph theory and combinatorial mathematics, and a sufficient condition for a nonnegative tridiagonal matrix to be an inverse M-inatrix is given.

第一部分分析证明了逆M-矩阵的结构特点和在Hadamard积下的封闭性；第二部分分析几类特殊矩阵的结构特点，以及它们逆矩阵的构造方法；第三部分研究对称不定矩阵秩一校正的Bunch-Kaufman分解和相应的算法。

Macroporous tributyl amine aminating strongly basic anion exchange resin-a phase transfer catalyst with high catalytic activity for nucleophilic substitution,which was screened out via combinatorial chemistry method –was used to catalyze the nucleophilic substitution reactions for synthesis of benzyl acetate,benzyl propionate,benzyl butyrate and benzyl valerate.

用组合化学方法筛选出的对无外加碱条件下的亲核取代催化活性最高的聚合物季铵盐–三丁胺胺化强碱性阴离子交换树脂为相转移催化剂，催化合成了乙酸苄酯、丙酸苄酯、丁酸苄酯、戊酸苄酯等羧酸苄酯。

Finally, an example was provided to verity the feasibility and practicality of the combinatorial evaluation model.

最后，通过一个实例验证该模型的可行性和实用性。

It establishes a cooperative system of energy saving and emission reduction deducing from appraisive system founded on three-dimensional combinatorial model, monitoring system grounded on SDSS and examinatorial system fixed on BP Neural Network, which provides necessary system info for energy saving and emission reduction.

认为建立基于三维组合模型的评价体系、基于SDSS的监测体系和基于BP Neural Network的考核体系基础上的节能减排协同体系研究是实现节能减排约束性指标的必要理论支撑。

The active compound Celangulin-V, which is the main active compound against insect pest from Celastrus angulatus Max, was modified at its 6-OH and the core structure β-dihydroagarofuran polyol of Celangulins from the basic hydrolysis of the extract of the root bark of Celastrus angulatus Max was modified by combinatorial chemical method.

主要结果如下： 1、合成了苦皮藤素V6-乙酯、6-烯丙基醚和6-酮等衍生物，通过NMR方法鉴定了化合物的结构，经文献检索均为新化合物，生测结果表明酮衍生物丧失了杀虫活性，乙酯衍生物与苦皮藤素V活性相当，醚衍生物较苦皮藤素V活性提高11倍。

In addition, using combinatorial chemis...

第一，用溶胶-凝胶法制备纳米TiO_2光催化剂，得到的TiO_2光催化剂粒径在40-60nm，外观呈球形，颗粒没有团聚现象。

We were cousins—his grandfather was King of Scots,and his great-grandfather was Henry VII of England.

我们是堂姐弟——他的祖父曾是苏格兰国王，他的曾祖父是英格兰的亨利二世。

I do want to help you, but I am in a quandary now!

我是想帮你，但是我现在左右为难啊！