查询词典 combinatorial problem

We demonstrate that coexpression of the Forkhead protein FoxC2 and the Ets protein Etv2 induces ectopic expression of vascular genes in Xenopus embryos, and that combinatorial knockdown of the orthologous genes in zebrafish embryos disrupts vascular development.

实验显示，Forkhead蛋白FoxC2和Ets蛋白Etv2的共同表达，能够诱使非洲爪蟾胚胎血管基因的易位表达。

Our studies mainly focus on the free groups with finite ranks . Free groups with finite ranks are the fundamental subjects of combinatorial group theory, and they have central importance for the studies of both topology and algebra.

我们研究比较多的是有限秩的自由群，有限秩自由群是组合群论的中心课题，是一个在拓扑学及代数学上都具有重要意义的研究对象，获取有关这些自由群的结构的信息的一个主要方法是研究其上的各种自同构作用。

Generalized pseudorandom punctured binary sequence pair along with the transformation properties and combinatorial limited conditions are presented.

首先推导出二元序列偶的周期相关理论界，这为进一步研究具有良好相关特性的二元序列偶集提供了理论基础。

In this thesis, by employing generating function technique, some new combinatorial identities have been established.

本文利用发生函数理论建立了一系列新的组合恒等式，并且利用发生函数方法讨论了一些级数的取整值问题以及某些多项式在有理点的取值问题。

And we have given Hadamard matrix in detail in block design, coding and the specific application in communication., Hadamard code as a nonlinear combinatorial code has catered to the need of development of computer technology, stock systematic data and high speed for realizing and reliable access, request the error control code has not only little redundancy, but also can parallel encoding and decoding with high speed.

Hadamard码作为一种非线性组合码，迎合了计算机技术的发展对实现存储系统数据高速且可靠地存取，要求所采用的差错控制码不但冗余度小，还应当能高速并行编码和译码的需要。

The author takes a primarily combinatorial stance toward knot theory and its relations with these subjects.

作者把一种主要组合的立场带向结理论和它的与这些主题的关系。

This paper is concerned with combinatorial identities which can be derived by using Mbiusinversion and lattice function in the poset R_.

给出格路集R＿的定义和其上的一种偏序关系；利用格路函数的性质计算出该偏序集的Mbius函数，从而建立其上的Mbius反演和一系列多元组合恒等式，使一些卷积公式成为其特例

It is given a geometrical proof of an essential combinatorial lemma of Liao.

给出廖山涛一个关键的组合引理一个几何式的证明。

This prject provides the linear and nonlinear optimization problems and several combinatorial problems with several new powerful tools.

本研究为线性及非线性优化问题和多种组合优化问题提供了多种新的有力求解工具。

By means of classical analytic method and combinatorial computational technique, such as functional equations, Liouville theorem, series rearrangements, this dissertation investigates the product identities on theta functions.

利用经典分析方法及组合计算技巧，例如函数方程，Liouville定理，级数重排等，本文着重研究theta函数中的乘积恒等式。

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！