云南高校图书馆联盟文献共享服务平台- Journal of Mathematics and System Science

《Journal of Mathematics and System Science》: 作品数：481被引量：66H指数：3; 导出分析报告; 主办单位：美国大卫出版公司; 最新期次：2021年2期更多>>; 发文主题：SOMEUSINGGENERALIZEDTHEOREMANALYSIS更多>>; 发文领域：理学自动化与计算机技术经济管理电子电信更多>>; 发文基金：国家自然科学基金中国博士后科学基金泰国研究基金更多>>

A Topological Clustering of Variables: 《Journal of Mathematics and System Science》2021年第2期1-17,共17页Rafik Abdesselam; The clustering of objects(individuals or variables)is one of the most used approaches to exploring multivariate data.The two most common unsupervised clustering strategies are hierarchical ascending clustering(HAC)and...; 关键词：Hierarchical clustering proximity measure neighborhood graph adjacency matrix multivariate quantitative qualitative and mixed data analysis dimension reduction

Cyber Security-Protecting Personal Data: 《Journal of Mathematics and System Science》2021年第2期18-29,共12页Kevin McCormack Mary Smyth; Many organizations have datasets which contain a high volume of personal data on individuals,e.g.,health data.Even without a name or address,persons can be identified based on the details(variables)on the dataset.This...; 关键词：Data protection big data identity correlation approach cyber security data privacy.

Simulation of Weather Conditions on Mars: 《Journal of Mathematics and System Science》2021年第2期30-33,共4页Danyl Kecha; In times of active research of the possibilities of colonization of other planets,it is important to acquire the skills of forecasting weather conditions on the planets,which are the prospects for human settlement.In ...; 关键词：Surface temperature SUBLIMATION DESUBLIMATION theoretical model horizontal layers vertical layers.

Some Applications of the First Sylow Theorem: 《Journal of Mathematics and System Science》2021年第2期34-37,共4页Emmanuel Akweittey Yarhands Dissou Arthur Daniel Gyam Albert Adu-Sackey; In this research,numerical examples of the first Sylow theorem are discussed.Groups,subgroups,cyclic groups,p-group,Sylow p-subgroup and,Cauchy’s theorem were used to illustrate the results.; 关键词：GROUPS SUBGROUPS cyclic group Sylow’s theorem.

Dissimilarity Measures for Time Series and Trend Analysis: Application to COVID-19 Cases Series: 《Journal of Mathematics and System Science》2021年第1期1-12,共12页Norio Watanabe; In this paper we propose some dissimilarity measure functions for trends of nonstationary time series.If time series are stationary,the cross correlation function can be applied as a similarity measure.However,the val...; 关键词：Cross correlation function CLUSTERING common trend.

Encryption Algorithm with Linear Equations: 《Journal of Mathematics and System Science》2021年第1期13-20,共8页Remzi Aktay; In this study,it is aimed to develop an encryption algorithm by finding a third point based on the line equation and the two points taken on it.In the literature review,a method was found to find the third point based...; 关键词：Line equation SLOPE ASCII characters encryption.

The Meaning of Function in the Mathematics Textbooks: 《Journal of Mathematics and System Science》2021年第1期21-28,共8页Xhevdet Thaqi Afërdita Aljimi; This paper’s focus is the examination of how do mathematics textbooks for lower secondary school in Kosovo represent the meaning of concept of function.Textbooks and teachers usually introduce function via a situatio...; 关键词：FUNCTION mathematics education textbooks VARIABLES

Stratified and Un-stratified Sampling in Bagging: Data Mining: 《Journal of Mathematics and System Science》2021年第1期29-36,共8页Yousef M.T.El Gimati; we would like to acknowledge the Research and Consulting Centre(RCC),University of Benghazi,Libya for funded this work.; Stratified sampling is often used in opinion polls to reduce standard errors,and it is known as variance reduction technique in sampling theory.The most common approach of resampling method is based on bootstrapping t...; 关键词：BOOTSTRAPPING decision boundary stratification models RESAMPLING classifier.

The Analysis of Systems of Measurement for the Construction of Geometrical Models of the Product: 《Journal of Mathematics and System Science》2020年第2期1-12,共12页Aleksandr Yurievich Brailov; In the present work,the relevant components of the two basic system of measurement are defined through the analysis of existing systems of measurement for geometrical modeling.The major features of such systems relate...; 关键词：Geometry systems of measurement image PROJECTION law projective connections DRAWING interrelations arrangement of views

Some Conjectures on the Divisor Function: 《Journal of Mathematics and System Science》2020年第2期13-22,共10页Masatoshi Nakano; We propose the following conjecture on(σ)n the sum-of-divisors function:log(e'nlog logn-σ(n))/log(e'nlog log n)will increase strictly and converge to1 when n runs from the colossally abundant numbers to infinity Thi...; 关键词：Riemann hypothesis Robin’s theorem colossally abundant number divisor function.

《Journal of Mathematics and System Science》