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NONSTANDARD: 作品数：61被引量：62H指数：3; 导出分析报告; 相关领域：理学更多>>; 相关作者：徐利治孙广润刘普寅金治明谢薇更多>>; 相关机构：大连理工大学曲阜师范大学国防科学技术大学东北大学更多>>; 相关期刊：更多>>; 相关基金：国家自然科学基金国家教育部博士点基金上海市自然科学基金俄罗斯基础研究基金更多>>

Existence of Solution to a Class of Elliptic Equations with Lower Order Terms and Variable Exponents: 《Journal of Mathematical Research with Applications》2024年第6期795-806,共12页Zhongqing LI; Supported by the National Natural Science Foundation of China(Grant No.11901131);the University-Level Research Fund Project in Guizhou University of Finance and Economics(Grant No.2022KYYB01)。; We study a class of nonlinear elliptic equations with nonstandard growth condition.The main feature is that two lower order terms,a non-coercive divergence term divΦ(x,u)and a gradient term H(x,u,▽u)with no growth r...; 关键词：elliptic equations nonstandard growth condition lower order terms weak solutions

Locally and globally uniform approximations for ruin probabilities of a nonstandard bidimensional risk model with subexponential claims: 《Applied Mathematics(A Journal of Chinese Universities)》2024年第1期98-113,共16页LIU Zai-ming GENG Bing-zhen WANG Shi-jie; Supported by the Natural Science Foundation of China(12071487,11671404);the Natural Science Foundation of Anhui Province(2208085MA06);the Provincial Natural Science Research Project of Anhui Colleges(KJ2021A0049,KJ2021A0060);Hunan Provincial Innovation Foundation for Postgraduate(CX20200146)。; Consider a nonstandard continuous-time bidimensional risk model with constant force of interest,in which the two classes of claims with subexponential distributions satisfy a general dependence structure and each pair...; 关键词：bidimensional risk model asymptotic formula subexponential distribution consistently varying tail ruin probability

A Nonstandard Computational Investigation of SEIR Model with Fuzzy Transmission, Recovery and Death Rates: 《Computers, Materials & Continua》2023年第11期2251-2269,共19页Ahmed H.Msmali Fazal Dayan Muhammad Rafiq Nauman Ahmed Abdullah Ali H.Ahmadini Hassan A.Hamali; funded by the Ministry of Education in Saudi Arabia of funder Grant Number ISP22-6 and the APC was funded by the Ministry of Education in Saudi Arabia.; In this article,a Susceptible-Exposed-Infectious-Recovered(SEIR)epidemic model is considered.The equilibrium analysis and reproduction number are studied.The conventional models have made assumptions of homogeneity in...; 关键词：Epidemic model fuzzy parameters NSFD scheme CONVERGENCE POSITIVITY CONSISTENCY

Nonstandard Unitary Transformations of Quantum States: 《Journal of Applied Mathematics and Physics》2023年第9期2568-2575,共8页Gombojav O. Ariunbold; In quantum optics, unitary transformations of arbitrary states are evaluated by using the Taylor series expansion. However, this traditional approach can become cumbersome for the transformations involving non-commuti...; 关键词：Taylor Series Unitary Transformation Temporal Evolution Displaced State Coherent State Squeezed State Two-Mode Squeezed State Holstein-Primakoff State

Existence Result to a Class of Parabolic Equations with Nonstandard Growth Condition and Zero Order Term: 《Journal of Mathematical Research with Applications》2023年第4期467-476,共10页Zhongqing LI; Supported by the National Natural Science Foundation of China(Grant No.11901131);the University-Level Research Fund Project in Guizhou University of Finance and Economics(Grant No.2022KYYB01)。; In the setting of variable exponent,an existence result to a class of parabolic equations with zero order term is proved.The proof of existence relies essentially on selecting some suitable test functions based upon t...; 关键词：nonstandard growth condition zero order term weak solutions

Existence of solutions to a class of elliptic equations with nonstandard growth condition and zero order term: 《Frontiers of Mathematics in China》2023年第1期43-50,共8页Zhongqing LI; supported in part by the National Natural Science Foundation of China(Grant No.11901131);Youth science and technology talent growth project in Guizhou Province for ordinary institutions of higher learning(KY[2021]142).; The existence of bounded weak solutions,to a class of nonlinear elliptic equations with variable exponents,is investigated in this article.A uniform a priori L^(∞) estimate is obtained by the De Giorgi iterative tech...; 关键词：Elliptic equations variable e exponents De Giorgi iteration Minty'strick

Research on the Causes and Governance of Non-standard Problems of Heterogeneous Agricultural Cooperatives-based on the Reality Observation from X County in Ganzi Prefecture, China: 《Journal of Finance Research》2022年第1期15-20,共6页Cheng Deng; Research on New Socialist Agriculture,Rural areas and Farmers in Ganzi Prefecture.(Project No.:gzsk202004).; Over the years,the positive effect of the growth of China’s agricultural cooperatives on the development of rural economy is undoubted,but many problems have been exposed in practice,such as the non-standard problems...; 关键词：Heterogeneity of members Agricultural cooperatives Nonstandard problems

Application of Quality Control Circle Activities in Reducing the Non-standard Use Rate of Sterile Articles and Drugs: 《外文科技期刊数据库(文摘版)医药卫生》2021年第12期461-463,共5页CUI Haining YAN Xue YANG Ruirui; Objective: to discuss the investigation of reducing the utilization rate of sterile items and non-standard drugs before and after the development of quality control circle activities. Methods: to pass the relevant kno...; 关键词：quality control circle reduce sterile items nonstandard drug use rate

An Expository on Some Nonstandard Compactifications: 《Advances in Pure Mathematics》2021年第10期807-815,共9页Alagu Somasundaram Rukhmoni Kala; Three classical compactification procedures are presented with nonstandard flavour. This is to illustrate the applicability of Nonstandard analytic tool to beginners interested in Nonstandard analytic methods. The gen...; 关键词：Non-Standard COMPACTIFICATION Completely Regular Space Locally Compact Hausdorff Space Locally Compact Abelian Group

A DIFFUSIVE SVEIR EPIDEMIC MODEL WITH TIME DELAY AND GENERAL INCIDENCE被引量：1: 《Acta Mathematica Scientia》2021年第4期1385-1404,共20页Jiniing ZHOU Xinsheng MA Yu YANG Tonghua ZHANG; In this paper,we consider a delayed diffusive SVEIR model with general incidence.We first establish the threshold dynamics of this model.Using a Nonstandard Finite Difference(NSFD) scheme,we then give the discretizati...; 关键词：SVEIR model VACCINATION Lyapunov function nonstandard finite difference method

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