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On the Weyl’s Lemma for Triharmonic Functions
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作者 ZHENG Run-jie ZENG Jia-min FANG Yi 《Chinese Quarterly Journal of Mathematics》 2024年第3期288-294,共7页
In this paper,by choosing some appropriate test functions,we prove the Weyl’s lemma for triharmonic functions based on the new type of mean value formulas.
关键词 Weyl’s lemma Harmonic functions Triharmonic functions Test functions Mean value formulas
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Network Intrusion Traffic Detection Based on Feature Extraction 被引量:1
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作者 Xuecheng Yu Yan Huang +2 位作者 Yu Zhang Mingyang Song Zhenhong Jia 《Computers, Materials & Continua》 SCIE EI 2024年第1期473-492,共20页
With the increasing dimensionality of network traffic,extracting effective traffic features and improving the identification accuracy of different intrusion traffic have become critical in intrusion detection systems(... With the increasing dimensionality of network traffic,extracting effective traffic features and improving the identification accuracy of different intrusion traffic have become critical in intrusion detection systems(IDS).However,both unsupervised and semisupervised anomalous traffic detection methods suffer from the drawback of ignoring potential correlations between features,resulting in an analysis that is not an optimal set.Therefore,in order to extract more representative traffic features as well as to improve the accuracy of traffic identification,this paper proposes a feature dimensionality reduction method combining principal component analysis and Hotelling’s T^(2) and a multilayer convolutional bidirectional long short-term memory(MSC_BiLSTM)classifier model for network traffic intrusion detection.This method reduces the parameters and redundancy of the model by feature extraction and extracts the dependent features between the data by a bidirectional long short-term memory(BiLSTM)network,which fully considers the influence between the before and after features.The network traffic is first characteristically downscaled by principal component analysis(PCA),and then the downscaled principal components are used as input to Hotelling’s T^(2) to compare the differences between groups.For datasets with outliers,Hotelling’s T^(2) can help identify the groups where the outliers are located and quantitatively measure the extent of the outliers.Finally,a multilayer convolutional neural network and a BiLSTM network are used to extract the spatial and temporal features of network traffic data.The empirical consequences exhibit that the suggested approach in this manuscript attains superior outcomes in precision,recall and F1-score juxtaposed with the prevailing techniques.The results show that the intrusion detection accuracy,precision,and F1-score of the proposed MSC_BiLSTM model for the CIC-IDS 2017 dataset are 98.71%,95.97%,and 90.22%. 展开更多
关键词 Network intrusion traffic detection PCA hotelling’s T^(2) BiLsTM
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用于高维数据的复合Hotelling's T^2检验(英文)
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作者 李婷 《应用概率统计》 CSCD 北大核心 2017年第4期349-368,共20页
本文研究高维数据下两样本均值的检验问题.基于Hotelling's T^2检验,我们提出了适用于高维数据均值检验的复合Hotelling's T^2检验统计量,证明了其渐近正态性并研究了其渐近功效.我们通过模拟和实例分析展示了该检验在有限样本... 本文研究高维数据下两样本均值的检验问题.基于Hotelling's T^2检验,我们提出了适用于高维数据均值检验的复合Hotelling's T^2检验统计量,证明了其渐近正态性并研究了其渐近功效.我们通过模拟和实例分析展示了该检验在有限样本下相比现有高维检验方法的优良性. 展开更多
关键词 高维均值检验 hotelling’s T2检验 渐近正态 局部功效
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A Proof of Brouwer’s Fixed Point Theorem Using Sperner’s Lemma
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作者 Cassie Lu 《数学计算(中英文版)》 2023年第2期1-6,共6页
This article offers a simple but rigorous proof of Brouwer’s fixed point theorem using Sperner’s Lemma.The general method I have used so far in the proof is mainly to convert the n-dimensional shapes to the correspo... This article offers a simple but rigorous proof of Brouwer’s fixed point theorem using Sperner’s Lemma.The general method I have used so far in the proof is mainly to convert the n-dimensional shapes to the corresponding case under the Sperner’s Labeling and apply the Sperner’s Lemma to solve the question. 展开更多
关键词 Brouwer’s Fixed Point Theorem sperner’s lemma PROOF
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Small Modular Solutions to Fermat’s Last Theorem
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作者 Thomas Beatty 《Advances in Pure Mathematics》 2024年第10期797-805,共9页
The proof by Andrew Wiles of Fermat’s Last Theorem in 1995 resolved the existence question for non-trivial solutions in integers x,y,zto the equation xn+yn=znfor n>2. There are none. Surprisingly, there are infini... The proof by Andrew Wiles of Fermat’s Last Theorem in 1995 resolved the existence question for non-trivial solutions in integers x,y,zto the equation xn+yn=znfor n>2. There are none. Surprisingly, there are infinitely many solutions if the problem is recast in terms of modular arithmetic. Over a hundred years ago Issai Schur was able to show that for any n there is always a sufficiently large prime p0such that for all primes p≥p0the congruence xn+yn≡zn(modp)has a non-trivial solution. Schur’s argument wasnon-constructive, and there is no systematic method available at present to construct specific examples for small primes. We offer a simple method for constructing all possible solutions to a large class of congruences of this type. 展开更多
关键词 Fermat’s Last Theorem Modular Arithmetic CONGRUENCEs Prime Numbers Primitive Roots Indices Ramsey Theory schur’s lemma in Ramsey Theory
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Identities on q-Harmonic Numbers
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作者 Mengxiao Zhou Haitao Jin Huanhuan Zheng 《Journal of Applied Mathematics and Physics》 2024年第5期1796-1803,共8页
With the help of the classical Abel’s lemma on summation by parts and algorithm of q-hypergeometric summations, we deal with the summation, which can be written as multiplication of a q-hypergeometric term and q-harm... With the help of the classical Abel’s lemma on summation by parts and algorithm of q-hypergeometric summations, we deal with the summation, which can be written as multiplication of a q-hypergeometric term and q-harmonic numbers. This enables us to construct and prove identities on q-harmonic numbers. Several examples are also given. 展开更多
关键词 Harmonic Numbers q-Zeilberger Algorithm Abel’s lemma
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S-引理及其进展
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作者 艾文宝 梁炜 张梦晓 《运筹学学报》 CSCD 北大核心 2023年第4期20-32,共13页
S-引理是运筹学领域和控制论领域中一个十分重要的定理。本文首先从一个非线性控制系统的全局渐近稳定性分析出发,引出S-过程和S-引理,以及两者之间的联系与区别。接着我们介绍了S-引理的基本内容和最新进展,以及它在复数域和四元数集... S-引理是运筹学领域和控制论领域中一个十分重要的定理。本文首先从一个非线性控制系统的全局渐近稳定性分析出发,引出S-过程和S-引理,以及两者之间的联系与区别。接着我们介绍了S-引理的基本内容和最新进展,以及它在复数域和四元数集合上的推广。最后,我们介绍了将齐次型S-引理推广到任意多个对称(或厄米特)矩阵时的一些基本结果。 展开更多
关键词 s-过程 s-引理 袁氏引理 低秩解
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New versions of Barbalat's lemma with applications 被引量:6
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作者 Mingzhe HOU Guangren DUAN Mengshu GUO 《控制理论与应用(英文版)》 EI 2010年第4期545-547,共3页
This note presents a set of new versions of Barbalat's lemma combining with positive (negative) definite functions.Based on these results,a set of new formulations of Lyapunov-like lemma are established.A simple ex... This note presents a set of new versions of Barbalat's lemma combining with positive (negative) definite functions.Based on these results,a set of new formulations of Lyapunov-like lemma are established.A simple example shows the usefulness of our results. 展开更多
关键词 Barbalat's lemma Lyapunov-like lemma
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A version of Hill's lemma for Cosserat continuum 被引量:3
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作者 Xikui Li Qipeng Liu 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2009年第4期499-506,共8页
On the basis of Hill's lemma for classical Cauchy continuum, a version of Hill's lemma for micro-macro homogenization modeling of heterogeneous Cosserat continuum is presented in the flame of average-field theory. T... On the basis of Hill's lemma for classical Cauchy continuum, a version of Hill's lemma for micro-macro homogenization modeling of heterogeneous Cosserat continuum is presented in the flame of average-field theory. The admissible boundary conditions required to prescribe on the representative volume element for the modeling are extracted and discussed to ensure the satisfaction of Hill-Mandel energy condition and the first-order average field theory. 展开更多
关键词 Hill's lemma Hill-Mandel condition Cosserat continuum Average-field theory RVE boundary conditions
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The Extension of Robinson's Sequential Lemma and Its Application 被引量:1
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作者 陈东立 马春晖 卢志义 《Chinese Quarterly Journal of Mathematics》 CSCD 北大核心 2007年第3期471-474,共4页
A. Robinson's sequential lemma is extended to nets in general topological space, and obviously the case of nets in ^*R is its corollary. As its application, the paper proves a property about topology of uniform conv... A. Robinson's sequential lemma is extended to nets in general topological space, and obviously the case of nets in ^*R is its corollary. As its application, the paper proves a property about topology of uniform convergence. 展开更多
关键词 Robinson's sequential lemma MONAD monad of uniformity topology of uniform convergence
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Michael Porter's Five Forces——A Model for Hotel Industry Analysis 被引量:2
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作者 高婧 《科技信息》 2012年第35期245-245,共1页
This paper will define the scope of hotel industry,specifically use Michael Porter 's five forces to explain the natural environment and competitive situation in this field.The porter's theory would significan... This paper will define the scope of hotel industry,specifically use Michael Porter 's five forces to explain the natural environment and competitive situation in this field.The porter's theory would significantly help hotel managers to apply key marketing strategies and gain more competitive advantages. 展开更多
关键词 英文摘要 编辑工作 学术论文 教学研究
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Wiener's lemma:localization and various approaches
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作者 SHIN Chang Eon SUN Qi-yu 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2013年第4期465-484,共20页
Matrices and integral operators with off-diagonal decay appear in numerous areas of mathematics including numerical analysis and harmonic analysis, and they also play impor-tant roles in engineering science including ... Matrices and integral operators with off-diagonal decay appear in numerous areas of mathematics including numerical analysis and harmonic analysis, and they also play impor-tant roles in engineering science including signal processing and communication engineering. Wiener’s lemma states that the localization of matrices and integral operators are preserved un-der inversion. In this introductory note, we re-examine several approaches to Wiener’s lemma for matrices. We also review briefly some recent advances on localization preservation of operations including nonlinear inversion, matrix factorization and optimization. 展开更多
关键词 Wiener’s lemma infinite matrix stability Wiener algebra Beurling algebra off-diagonal decay inverse closedness
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Approach to a Fifth-Order Boundary Value Problem, via Sperner's Lemma
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作者 Panos K. Palamides Evgenia H. Papageorgiou 《Applied Mathematics》 2011年第8期993-998,共6页
We consider the five-point boundary value problem for a fifth-order differential equation, where the nonlinearity is superlinear at both the origin and +infinity. Our method of proof combines the Kneser’s theorem wit... We consider the five-point boundary value problem for a fifth-order differential equation, where the nonlinearity is superlinear at both the origin and +infinity. Our method of proof combines the Kneser’s theorem with the well-known from combinatorial topology Sperner’s lemma. We also notice that our geometric approach is strongly based on the associated vector field. 展开更多
关键词 Fifth-Order Differential Equation Vector Field Kneser’s THEOREM sperner’s lemma
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Fuzzy Zorn’s lemma with applications
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作者 XIN Xiao-long FU Yu-long 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2021年第4期521-536,共16页
We introduced the fuzzy axioms of choice,fuzzy Zorn’s lemma and fuzzy well-ordering principle,which are the fuzzy versions of the axioms of choice,Zorn’s lemma and well-ordering principle,and discussed the relations... We introduced the fuzzy axioms of choice,fuzzy Zorn’s lemma and fuzzy well-ordering principle,which are the fuzzy versions of the axioms of choice,Zorn’s lemma and well-ordering principle,and discussed the relations among them.As an application of fuzzy Zorn’s lemma,we got the following results:(1)Every proper fuzzy ideal of a ring was contained in a maximal fuzzy ideal.(2)Every nonzero ring contained a fuzzy maximal ideal.(3)Introduced the notion of fuzzy nilpotent elements in a ring R,and proved that the intersection of all fuzzy prime ideals in a commutative ring R is the union of all fuzzy nilpotent elements in R.(4)Proposed the fuzzy version of Tychonoff Theorem and by use of fuzzy Zorn’s lemma,we proved the fuzzy Tychonoff Theorem. 展开更多
关键词 fuzzy axioms of choice fuzzy Zorn’s lemma fuzzy well-ordering principle fuzzy ideal of a ring fuzzy Tychonoff Theorem
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CHINA'S HOTEL INDUSTRY
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作者 Zhou Ping 《China's Foreign Trade》 1996年第1期47-47,共1页
In June 1995,the ’95 China Hotel Fair,held at the Beijing China World TradeCentre,displayed products from over200 exhibitors from 22 countries,includingChina.The global largest barbecue,All-China Cake Decoration Cont... In June 1995,the ’95 China Hotel Fair,held at the Beijing China World TradeCentre,displayed products from over200 exhibitors from 22 countries,includingChina.The global largest barbecue,All-China Cake Decoration Contest,Cream-Making Contest,China Baking Food andCandy Products Exhibition were also held. 展开更多
关键词 World CHINA’s hotel INDUsTRY OVER
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Architectures in the Shadow of "Investors' Urban Planning"--Case Study of Avala Hotel in Budva, Montenegro
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作者 Kosara Kujundzic 《Journal of Civil Engineering and Architecture》 2013年第7期867-874,共8页
Avala Hotel in Budva, Montenegro, has undergone three reconstructions. Each of them led to significant spatial changes. The first hotel established the foundation of urbanization process in Budva, the building was too... Avala Hotel in Budva, Montenegro, has undergone three reconstructions. Each of them led to significant spatial changes. The first hotel established the foundation of urbanization process in Budva, the building was too high compared to the old town walls in the surrounding and thus not well integrated. The second reconstruction was the only successful achievement. At this time, in the first detailed urban plan including hotel and its surrounding area, the conclusion was that it represents "high-quality, seaside-favorable ambience" that should not be harmed by further building expansion. The last, illegal reconstruction in 2006 resulted in over enlarged new building disrespectful of the surrounding and the previous design. Similarly, the 2008 new detailed urban plan was the creation of "investors' urban planning". Entirely driven by profit, it arranges building reconstructions with multiple enlargements. This study tends to point out contextual impacts of the three hotels on the surrounding area, with special focus on the last reconstruction and "investors' urban planning" phenomena. The applied research method is comparative, chronological analysis of the three hotels. The aim of this research paper is to inspire initiatives that will help overcoming declining and harmful synergy of architecture and new socio-economic phenomena. It is the only way leading to the significant architectural goal: creating refined, harmonized and high quality ambience. 展开更多
关键词 Avala hotels reconstruction investments growth investors urban planning illegal construction building expansion spatial devastation.
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一种C/S与B/S混合结构的饭店管理系统 被引量:1
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作者 詹兆宗 《宁波大学学报(理工版)》 CAS 2005年第2期244-247,共4页
介绍了C/S和B/S混合结构对改变饭店管理模式的作用,讨论了用PB8.0构造C/S和B/S混合结构的基本体系,分析了C/S结构饭店管理系统向C/S和B/S混合结构转换中的移植策略和基本步骤.
关键词 饭店MIs C/s结构 B/s结构 混合结构
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基于C/S结构的小型餐饮管理系统设计与实现 被引量:4
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作者 王新宇 《微型机与应用》 2013年第22期7-9,13,共4页
为使酒店管理(信息工程)专业的学生掌握设计和实现旅游信息管理系统的方法,对酒店餐饮管理工作的业务流程进行了分析,并在此基础上设计了可供学生在管理信息系统设计课程中使用的餐饮管理系统设计方案。通过教学实践证明,该小型餐饮管... 为使酒店管理(信息工程)专业的学生掌握设计和实现旅游信息管理系统的方法,对酒店餐饮管理工作的业务流程进行了分析,并在此基础上设计了可供学生在管理信息系统设计课程中使用的餐饮管理系统设计方案。通过教学实践证明,该小型餐饮管理系统完全可以满足教学需求,并且具有一定的实用价值,可以在中小型酒店餐饮部使用。 展开更多
关键词 餐饮信息管理系统 C s模式 酒店信息管理
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基于C/S结构的酒店管理系统 被引量:7
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作者 翟广宇 《兰州工业高等专科学校学报》 2004年第2期19-22,共4页
依据现代酒店经营管理的思想,通过对几家星级酒店的市场调研,探讨了酒店的管理方法,结合使用当前流行的面向对象(OO)数据库前台开发工具(PowerBuilder),后台数据库技术(SQLServer2000)以及先进的C/S体系结构,给出了一个应用软件的开发... 依据现代酒店经营管理的思想,通过对几家星级酒店的市场调研,探讨了酒店的管理方法,结合使用当前流行的面向对象(OO)数据库前台开发工具(PowerBuilder),后台数据库技术(SQLServer2000)以及先进的C/S体系结构,给出了一个应用软件的开发解决方案. 展开更多
关键词 C/s结构 酒店管理系统 面向对象 数据库 应用软件 软件开发
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局部引理及其在(r,s)-SAT问题中的应用
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作者 邓天炎 张庆顺 许道云 《计算机工程与科学》 CSCD 2008年第11期68-71,共4页
一般说来,寻找满足一定结构性质的对象结构是困难的。概率方法提供了解决此类问题的途径:证明满足一定结构性质的对象的概率大于零。在概率方法中,局部引理是一个关键技术。本文介绍了局部引理的基本原理和使用方法,并将其应用到估计(k,... 一般说来,寻找满足一定结构性质的对象结构是困难的。概率方法提供了解决此类问题的途径:证明满足一定结构性质的对象的概率大于零。在概率方法中,局部引理是一个关键技术。本文介绍了局部引理的基本原理和使用方法,并将其应用到估计(k,s)-SAT问题中临界函数的下界。 展开更多
关键词 概率方法 局部引理(r s)-sAT问题 临界函数
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