Applied Mathematics and Computation最新文献_第8页

Min-min minimization for the fractional ℓ0-regularized problem 分数阶正则化问题的最小最小解

IF 3.5 2区数学

Applied Mathematics and Computation Pub Date : 2025-05-02 DOI: 10.1016/j.amc.2025.129499

Jun Wang , Qiang Ma , Cheng Zhou

引用次数: 0

A spatio-temporal radial basis function collocation method based on Hausdorff fractal distance for Hausdorff derivative heat conduction equations in three-dimensional anisotropic materials 三维各向异性材料中Hausdorff导数热传导方程的基于Hausdorff分形距离的时空径向基函数配置方法

IF 3.5 2区数学

Applied Mathematics and Computation Pub Date : 2025-05-02 DOI: 10.1016/j.amc.2025.129501

Jiayu Wang , Lin Qiu , Yingjie Liang , Fajie Wang

{"title":"A spatio-temporal radial basis function collocation method based on Hausdorff fractal distance for Hausdorff derivative heat conduction equations in three-dimensional anisotropic materials","authors":"Jiayu Wang , Lin Qiu , Yingjie Liang , Fajie Wang","doi":"10.1016/j.amc.2025.129501","DOIUrl":"10.1016/j.amc.2025.129501","url":null,"abstract":"<div><div>In this paper, the spatio-temporal radial basis function (RBF) collocation method based on Hausdorff fractal distance is developed and used to simulate the transient heat transfer problems in anisotropic materials governed by Hausdorff derivative heat conduction equations. We introduce Hausdorff fractal distance into the conventional RBFs, and based on this incorporation, establish a meshless method to address Hausdorff derivative heat conduction problems, in which the anisotropy of the thermal conductivity of the material and spatio-temporal fractal characteristics are taken into account. We set the source points of the collocation method outside the spatial computational domain instead of distributing them within the original domain to further improve the accuracy of the method. Numerical experiments carried out in this study demonstrate the superior performance of the proposed approach compared to the finite element method and traditional RBF collocation method, showing that the developed method can be considered as a competitive tool for simulating Hausdorff derivative transient heat conduction problems in complex geometries.</div></div>","PeriodicalId":55496,"journal":{"name":"Applied Mathematics and Computation","volume":"502 ","pages":"Article 129501"},"PeriodicalIF":3.5,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prescribed-time distributed resource allocation algorithm for heterogeneous linear multi-agent networks with unbalanced directed communication 定向通信不平衡的异构线性多智能体网络的规定时间分布式资源分配算法

IF 3.5 2区数学

Applied Mathematics and Computation Pub Date : 2025-05-02 DOI: 10.1016/j.amc.2025.129498

Yuxiao Lian , Baoyong Zhang , Deming Yuan , Yao Yao , Bo Song

引用次数: 0

Synchronization of complex networks with multiple disturbances via aperiodically intermittent control input 基于非周期性间歇控制输入的多扰动复杂网络的同步

IF 3.5 2区数学

Applied Mathematics and Computation Pub Date : 2025-04-29 DOI: 10.1016/j.amc.2025.129495

Yong Wei , Mouquan Shen , Zheng H. Zhu , Xianji Meng

引用次数: 0

Choosability with union separation of planar graphs without intersecting triangles 无相交三角形的平面图形的联合分离的可选择性

IF 3.5 2区数学

Applied Mathematics and Computation Pub Date : 2025-04-29 DOI: 10.1016/j.amc.2025.129493

Xinhong Pang, Min Chen

引用次数: 0

Analysis of multiple contact types within the framework of semi-finite element method 半有限元法框架内多接触类型分析

IF 3.5 2区数学

Applied Mathematics and Computation Pub Date : 2025-04-26 DOI: 10.1016/j.amc.2025.129494

Ling Tao , Zhongpan Li , Hong Wen , Simiao Yu , Zhiqiang Feng

{"title":"Analysis of multiple contact types within the framework of semi-finite element method","authors":"Ling Tao , Zhongpan Li , Hong Wen , Simiao Yu , Zhiqiang Feng","doi":"10.1016/j.amc.2025.129494","DOIUrl":"10.1016/j.amc.2025.129494","url":null,"abstract":"<div><div>Dynamic contact problems are common in engineering systems. Current dynamic contact simulations are prone to energy non-conservation and over-reliance on nodes accuracy. To address the above difficulties, a numerical algorithm based on the bipotential theory for solving the dynamic contact problems of multibody systems is proposed. Within the framework of semi-finite element method, the Uzawa iteration is embedded in Newton iteration to solve the nonlinear equation. By constructing the adaptive virtual points on the contact surface, the bipotential theory is introduced to compute the local dynamic contact force. In this work, both the interactive contact interface and the coupling contact interface are considered, and the numerical examples are extended from two-dimension line-to-line contact to three-dimension surface-to-surface contact. In addition, the influence of coupling components on the deformation and motion of each subsystem is also revealed. The numerical results show that the proposed algorithm is effective and stable, satisfies the law of energy conservation strictly and reduces the over-dependence on the nodes accuracy. This work can provide a reference for further research on balancing computation efficiency and accuracy.</div></div>","PeriodicalId":55496,"journal":{"name":"Applied Mathematics and Computation","volume":"502 ","pages":"Article 129494"},"PeriodicalIF":3.5,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143873981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Convergence rate of nonlinear delayed neutral McKean-Vlasov SDEs driven by fractional Brownian motions 分数阶布朗运动驱动非线性延迟中立型McKean-Vlasov SDEs的收敛速率

IF 3.5 2区数学

Applied Mathematics and Computation Pub Date : 2025-04-26 DOI: 10.1016/j.amc.2025.129478

Shengrong Wang , Jie Xie , Li Tan

引用次数: 0

Time variable gain ESO-based fixed-time platoon tracking control for connected vehicles 基于时变增益的网联车辆定时排跟踪控制

IF 3.5 2区数学

Applied Mathematics and Computation Pub Date : 2025-04-23 DOI: 10.1016/j.amc.2025.129477

Linlin Liu , Liang Cao , Hongru Ren , Meng Zhao

{"title":"Time variable gain ESO-based fixed-time platoon tracking control for connected vehicles","authors":"Linlin Liu , Liang Cao , Hongru Ren , Meng Zhao","doi":"10.1016/j.amc.2025.129477","DOIUrl":"10.1016/j.amc.2025.129477","url":null,"abstract":"<div><div>Autonomous vehicles with information exchange and precision control on the road usually form platoon with smaller gaps between vehicles to increase the road traffic volume and reduce the fossil energy consumption. This paper focuses on uncertain vehicle platoon systems (VPSs) with disturbances and designs a distributed fixed-time disturbance rejection platoon tracking control strategy based on time variable gain extended state observer (TVGESO) and fixed-time stability theory. Firstly, a TVGESO is designed to achieve the estimation of external disturbances, which not only has a stricter stability analysis process of observation error convergence compared to nonlinear extended state observer, but also weakens the phenomenon of “initial differential peak” in traditional linear extended state observer methods. Subsequently, using the estimation of TVGESO and the fixed-time stability theory, a fixed-time control method is derived in the backstepping framework, and stability analysis shows that the control method achieves the system stability in bounded time independently of the initial conditions. Finally, the control strategy is applied to the VPSs, and the simulation and results verify that the control strategy can improve the transient and steady-state tracking control performance.</div></div>","PeriodicalId":55496,"journal":{"name":"Applied Mathematics and Computation","volume":"502 ","pages":"Article 129477"},"PeriodicalIF":3.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143859877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Monitoring biodiversity on highly reactive rock-paper-scissors models 用高度反应的石头剪刀布模型监测生物多样性

IF 3.5 2区数学

Applied Mathematics and Computation Pub Date : 2025-04-23 DOI: 10.1016/j.amc.2025.129474

D. Bazeia , M.J.B. Ferreira , B.F. de Oliveira , W.A. dos Santos

{"title":"Monitoring biodiversity on highly reactive rock-paper-scissors models","authors":"D. Bazeia , M.J.B. Ferreira , B.F. de Oliveira , W.A. dos Santos","doi":"10.1016/j.amc.2025.129474","DOIUrl":"10.1016/j.amc.2025.129474","url":null,"abstract":"<div><div>This work investigates how biodiversity is affected in a cyclic spatial May-Leonard model with hierarchical and non-hierarchical rules. Here we propose a generalization of the traditional rock-paper-scissors model by considering highly reactive species, i.e., species that react in a stronger manner compared to the others in respect to either competition or reproduction. These two classes of models, called here Highly Competitive and Highly Reproductive models, may lead to hierarchical and non-hierarchical dynamics, depending on the number of highly reactive species. The fundamental feature of these models is the fact that hierarchical models may as well support biodiversity, however, with a higher probability of extinction than the non-hierarchical ones, which are in fact more robust. This analysis is done by evaluating the probability of extinction as a function of mobility. In particular, we have analyzed how the dominance scheme changes depending on the highly reactive species for non-hierarchical models, where the findings lead to the conclusion that highly reactive species are usually at a disadvantage compared to the others. Moreover, we have investigated the power spectrum and the characteristic length of each species, including more information on the behavior of the several systems considered in the present work.</div></div>","PeriodicalId":55496,"journal":{"name":"Applied Mathematics and Computation","volume":"502 ","pages":"Article 129474"},"PeriodicalIF":3.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143859878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Neural network approximation of the composition of fractional operators and its application to the fractional Euler-Bernoulli beam equation 分式算子组成的神经网络近似及其在分式欧拉-伯努利梁方程中的应用

IF 3.5 2区数学

Applied Mathematics and Computation Pub Date : 2025-04-22 DOI: 10.1016/j.amc.2025.129475

Anna Nowak , Dominika Kustal , HongGuang Sun , Tomasz Blaszczyk

引用次数: 0