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Engineering Mathematics Letters最新文献

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Exponential stability of random impulsive semilinear integro-differential systems 随机脉冲半线性积分-微分系统的指数稳定性
Engineering Mathematics Letters Pub Date : 2019-04-17 DOI: 10.28919/eml/4094
Anu Souriar
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引用次数: 0
Oscillation and nonoscillation properties for a kind of nonlinear neutral impulsive delay differential systems 一类非线性中立型脉冲时滞微分系统的振动与非振动性质
Engineering Mathematics Letters Pub Date : 2019-03-28 DOI: 10.28919/eml/4076
S. Santra
{"title":"Oscillation and nonoscillation properties for a kind of nonlinear neutral impulsive delay differential systems","authors":"S. Santra","doi":"10.28919/eml/4076","DOIUrl":"https://doi.org/10.28919/eml/4076","url":null,"abstract":"This paper is concerned with oscillation and nonoscillation of a kind of nonlinear neutral impulsive differential systems with constant coefficients and constant delays by using the pulsatile constant. The sufficient and necessary conditions for oscillation in the case δ ∈ R{0} are obtained. Two examples are included using the main results.","PeriodicalId":364975,"journal":{"name":"Engineering Mathematics Letters","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124878930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spectra of operators associated with flow around an infinite cylinder 与无限圆柱体周围流动有关的算符谱
Engineering Mathematics Letters Pub Date : 2019-01-25 DOI: 10.28919/eml/3908
Jonathan Gustafsson, Srihari Y. Sritharan
{"title":"Spectra of operators associated with flow around an infinite cylinder","authors":"Jonathan Gustafsson, Srihari Y. Sritharan","doi":"10.28919/eml/3908","DOIUrl":"https://doi.org/10.28919/eml/3908","url":null,"abstract":"Numerical approximations of the spectrum of the Oseen operator and the spectrum of the linearised Navier-Stokes operator for flow around a cylinder in two dimensions have been studied for Reynolds numbers in the range 2 to 40. By using a spectral method featuring basis functions covering the entire exterior domain, it is possible to obtain a numerical approximation to the continuous spectrum and the point spectrum. The numerical approximation of the spectra seems to agree with the expected rigorous results. Namely a parabolic tongue containing the continuous spectra for the Oseen operator and for the linearised Navier--Stokes operator a parabolic tongue containing the continuous part of the spectrum plus a finite number of isolated eigenvalues.","PeriodicalId":364975,"journal":{"name":"Engineering Mathematics Letters","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124345834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bifurcation and chaos of a particle motion system with holonomic constraint 具有完整约束的粒子运动系统的分岔与混沌
Engineering Mathematics Letters Pub Date : 2019-01-25 DOI: 10.28919/eml/3974
Ning Cui, Junhong Li
{"title":"Bifurcation and chaos of a particle motion system with holonomic constraint","authors":"Ning Cui, Junhong Li","doi":"10.28919/eml/3974","DOIUrl":"https://doi.org/10.28919/eml/3974","url":null,"abstract":"This paper investigates a holonomic constrained system of a particle moving on a horizontal smooth plane. The equilibrium points, bifurcations and chaotic attractors of the system are analyzed. It shows that the rich dynamic behaviors of the particle motion system, including the degenerate Hopf bifurcations at multiple equilibrium points, the chaotic behaviors of the particle motion. The numerical simulations are carried out to verify theoretical analyses and to exhibit the rich chaotic behaviors.","PeriodicalId":364975,"journal":{"name":"Engineering Mathematics Letters","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127860633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A hybrid two-step method for direct solutions of general second order initial value problem 一般二阶初值问题直接解的混合两步法
Engineering Mathematics Letters Pub Date : 1900-01-01 DOI: 10.28919/eml/4877
{"title":"A hybrid two-step method for direct solutions of general second order initial value problem","authors":"","doi":"10.28919/eml/4877","DOIUrl":"https://doi.org/10.28919/eml/4877","url":null,"abstract":"","PeriodicalId":364975,"journal":{"name":"Engineering Mathematics Letters","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114182682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Determination of a better non-linear mathematical model with trigonometric sinusoidal behaviour for the pricing of local rice in Nigeria market 确定一个较好的非线性数学模型与三角正弦行为在尼日利亚市场的当地大米定价
Engineering Mathematics Letters Pub Date : 1900-01-01 DOI: 10.28919/eml/6643
{"title":"Determination of a better non-linear mathematical model with trigonometric sinusoidal behaviour for the pricing of local rice in Nigeria market","authors":"","doi":"10.28919/eml/6643","DOIUrl":"https://doi.org/10.28919/eml/6643","url":null,"abstract":"","PeriodicalId":364975,"journal":{"name":"Engineering Mathematics Letters","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121397503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Intuitive explanation of numerical diffusion with implicit scheme for advection equation 平流方程隐式格式数值扩散的直观解释
Engineering Mathematics Letters Pub Date : 1900-01-01 DOI: 10.28919/eml/7444
{"title":"Intuitive explanation of numerical diffusion with implicit scheme for advection equation","authors":"","doi":"10.28919/eml/7444","DOIUrl":"https://doi.org/10.28919/eml/7444","url":null,"abstract":"","PeriodicalId":364975,"journal":{"name":"Engineering Mathematics Letters","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126604182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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