1) Wiener number of graph
图的Wiener数
2) λ-modified Wiener index
λ-修改的Wiener指数
1.
On the λ-modified Wiener index
关于λ-修改的Wiener指数
3) Wiener index
Wiener数
1.
For a connected graph G,the Wiener index of G is defined to be the sum of the distances between all pairs of vertices in G.
对于一个连通图G,G的Wiener数被定义为G中所有顶点对(无序)的距离之和。
2.
In this thesis, we mainly study one of the topics in graph theory with applications: calculate the Wiener Index / a number for a molecular graph in chemistry.
本论文主要研究了图论及其应用中的一个方面：图论在化学中的应用——计算化学中分子图的Wiener数。
4) Shannon-wiener index
Shannon-wiener指数
1.
There was a distinct positive relationship among Richness index,Margalef index and Shannon-wiener index.
丰富度指数、Margalef指数与Shannon-wiener指数相关性显著,在小的空间研究尺度内,草地植物群落物种多样性指数受丰富度指数的影响较大。
2.
Based on Shannon-Wiener index,a new method was recommended.
针对森林物种多样性保育价值评估尚缺乏逻辑推理方法的现状,提出了更为客观合理的Shannon-Wiener指数评估法。
3.
GLM(generalized linear models) was employed to fit Shannon-Wiener indexes of arbor,shrub and herbaceous layers and the overall Shannon-Wiener index of the communities in the forest vegetations of Hungou of Zhongtiaoshan Mountain with environmental factors and SΦrenson index was used to examine species similarities of neighboring communities types along the altitude.
借助广义线性模型(generalized linear models,GLM),拟合了混沟森林植被乔、灌、草各层及群落总体的Shannon-Wiener指数与环境因子间的关系,并通过SΦrenson指数研究了海拔梯度上相邻森林群落类型物种组成的相似性,结果显示:(1)土壤pH值和海拔高度是对物种Shannon-Wiener指数影响最广泛的环境因子,湿度指数对混沟地区物种多样性影响不大。
5) Wiener index
Wiener指数
1.
Based on the Wiener index(W), a harmonic topological index(H) is proposed.
基于Wiener指数(W)建立调和拓扑指数(H),该指数对乙烷至癸烷的149种烷烃呈现惟一性表征。
2.
Then according to the characteristics of the topological structure of each part ,the formulae for the calculation of Wiener index have been given.
从而提出了一个计算直链烷烃衍生物Wiener指数的简便方法,达到简化计算的目的。
3.
This paper,using the number \%N\% of carbon atoms and Wiener index \%W,P\% as structural parameters,established a quantitative relationship formula between refractive indexes of alkanes and its molecular structure.
以碳原子数 N和 Wiener指数 W,P为结构参数 ,通过数学拟合的方法 ,建立了烷烃的折光率与其分子结构间的定量关系式 ,并计算了 1 0 1个烷烃的折光率。
6) Wiener algebra
Wiener代数
1.
In chapter 2,we discuss the K-group of Wiener algebra W and show that K_0(W) = Z and K_1(W) = Z.
本文共有四章内容：第一章主要介绍了本文的研究背景及本文有关的预备知识，包括文中涉及的基本概念和符号；第二章对Wiener代数W的K群进行较深入的讨论，得到K_0(W)=Z，K_1(W)=Z；第三章与第四章是本文的主要结果，主要对r阶移位空间上算子代数的K群进行研究。
补充资料：图的减缩图(或称图子式)
图的减缩图(或称图子式)
minor of a graph
图的减缩图(或称图子式)【.皿以ofa脚户;MHHoPrpa中a」【补注】设G是一个图(graph)(可以有环及多重边).G的一个减缩图(nullor)是从G中接连进行下述运算而得的任何一个图: i)删去一条边; 五)收缩一条边; 说)去掉一个孤立顶点. NRobe由on与P.D.Se脚aour的图减缩定理(脚Ph nl的。r theon习11)如下所述:已知有限图的无穷序列G，，GZ，…，则存在指标i
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条