检索结果-南通市图书馆

Efficient initials for computing maximal eigenpair

Frontiers of Mathematics in China 2016年第6期11卷 1379-1418页

作者： Mu-Fa CHEN School of Mathematical Sciences Beijing Normal University Laboratory of Mathematics and Complex Systems (Beijing Normal University) Ministry of Education Beijing 100875 China

This paper introduces some efficient initials for a well-known algorithm （an inverse iteration） for computing the maximal eigenpair of a class of real matrices. The initials not only avoid the collapse of the algorithm but are also unexpectedly efficient. The initials presented here are based on our analytic estimates of the maximal eigenvalue and a mimic of its eigenvector for many years of accumulation in the study of stochastic stability speed. In parallel, the same problem for computing the next to the maximal eigenpair is also studied.

关键词： Perron-Frobenius theorem power iteration Rayleigh quotient iteration efficient initial tridiagonal matrix q-matrix

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Multi Parameters Golden Ratio and Some Applications

引用

Applied Mathematics 2011年第7期2卷 808-815页

作者： Seyed Moghtada Hashemiparast Omid Hashemiparast 不详

The present paper is devoted to the generalized multi parameters golden ratio. Variety of features like two-dimensional continued fractions, and conjectures on geometrical properties concerning to this subject are also presented. Wider generalization of Binet, Pell and Gazale formulas and wider generalizations of symmetric hyperbolic Fibonacci and Lucas functions presented by Stakhov and Rozin are also achieved. Geometrical applications such as applications in angle trisection and easy drawing of every regular polygons are developed. As a special case, some famous identities like Cassini’s, Askey’s are derived and presented, and also a new class of multi parameters hyperbolic functions and their properties are introduced, finally a generalized q-matrix called Gn-matrix of order n being a generating matrix for the generalized Fibonacci numbers of order n and its inverse are created. The corresponding code matrix will prevent the attack to the data based on previous matrix.

关键词： Generalized Golden Ratio Trisection q-matrix Fibonacci Lucas Gazale Casseni

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

基于认知诊断模型框架评价阿富汗学生的数学能力 ——Ghor省的个案研究

基于认知诊断模型框架评价阿富汗学生的数学能力 ——Ghor省的个...

引用

作者： Mohammad Nasim Wafa 东北师范大学

学位级别：硕士

Cognitive diagnosis models（CDMs）has gained a growing interest in educational or psychological *** of considering an overall ability,a detailed latent attribute profile is considered to obtain a finer-grained evaluation and *** the popularity of CDMs,rare researches were conducted in *** open up the analysis and mind,CDMs are employed in this article as a very first ***,the main goal of this study is to investigate on why it gets more difficult to learn Mathematics for Afghans students,and to evaluate and determine the strengths and weaknesses of the Afghanistan students in attributes and *** research aims at assessing the mathematics skills of 8 grade students in *** response data is from the questionnaires of Trends in International Mathematics and Science Study（TIMSS）*** commonly used CDMs were employed to fit the response data,including the deterministic,inputs,noisy,“and”gate（DINA）model and the deterministic,inputs,noisy,“or”gate（DINO）*** the assistance of CDMs,we could obtain not only the item parameters,but also the skill profile for each *** show that the examinees do best in Number domain while do worst at Data and *** in terms of model selection,DINA model fitted the data better than DINO model.

关键词： CDMs DINA DINO q-matrix TIMSS 2011

来源：

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：