Communications in Nonlinear Science and Numerical Simulation最新文献_第10页

A linearized conservative compact scheme based on the double reduction order method for the Rosenau–Burgers equation 基于双约阶法的Rosenau-Burgers方程的线性化保守紧格式

IF 3.4 2区数学

Communications in Nonlinear Science and Numerical Simulation Pub Date : 2025-06-04 DOI: 10.1016/j.cnsns.2025.108974

Sitong Dong, Yiran Zhang, Yuanfeng Jin

引用次数: 0

Non-Lie non-classical symmetry solutions of a class of nonlinear reaction–diffusion equations 一类非线性反应扩散方程的非李非经典对称解

IF 3.4 2区数学

Communications in Nonlinear Science and Numerical Simulation Pub Date : 2025-06-04 DOI: 10.1016/j.cnsns.2025.108973

David Plenty, Maureen P. Edwards

引用次数: 0

Event-based uniform prescribed-time output feedback control for irregular output-constrained nonlinear systems 不规则输出约束非线性系统的基于事件的一致规定时间输出反馈控制

IF 3.4 2区数学

Communications in Nonlinear Science and Numerical Simulation Pub Date : 2025-06-04 DOI: 10.1016/j.cnsns.2025.109010

Yangang Yao , Yu Kang , Yunbo Zhao , Jieqing Tan , Lichuan Gu , Chao Wang

{"title":"Event-based uniform prescribed-time output feedback control for irregular output-constrained nonlinear systems","authors":"Yangang Yao , Yu Kang , Yunbo Zhao , Jieqing Tan , Lichuan Gu , Chao Wang","doi":"10.1016/j.cnsns.2025.109010","DOIUrl":"10.1016/j.cnsns.2025.109010","url":null,"abstract":"<div><div>This paper proposes an event-based uniform prescribed-time output feedback control (PTOFC) approach for irregular output-constrained nonlinear systems (OCNSs). Unlike the most existing methods of OCNSs, they mainly focus on OCNSs with infinite-time/deferred output constraints (i.e., the output constraints existing for all <span><math><mrow><mi>t</mi><mo>≥</mo><mn>0</mn></mrow></math></span> or <span><math><mrow><mi>t</mi><mo>≥</mo><msub><mrow><mi>t</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow></math></span>), while many actual systems often suffer from irregular output constraints (including infinite-time constraints, deferred constraints, unconstrained, constrained and unconstrained alternations, etc.), leading to new challenges in control design. By devising a stretch model-based nonlinear mapping function, and combining with event trigger control (ETC) technique, an event-based unified output feedback control algorithm is proposed, and the significant advantage is its suitability for infinite-time/deferred/alternant OCNSs, as well as unconstrained systems, without necessitating modifications to the control structure, and the communication burden is also effectively reduced. Furthermore, with the aid of the scaling transformation function (STF)-based prescribed-time stability (PTS) criteria, a novel prescribed-time state observer (PTSO)-based PTOFC algorithm is designed, under which the settling time can be pre-set arbitrarily regardless of the initial system states and control parameters. Meanwhile, the problems of singularity and large initial control input in conventional prescribed-time control schemes are eliminated. The presented approach is verified by means of simulation examples.</div></div>","PeriodicalId":50658,"journal":{"name":"Communications in Nonlinear Science and Numerical Simulation","volume":"150 ","pages":"Article 109010"},"PeriodicalIF":3.4,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222093","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

Bifurcation dynamics of a predator–prey model with impulsive density-dependent nonlinear pesticide spraying and predator release 具有脉冲密度相关非线性农药喷洒和捕食者释放的捕食者-猎物模型的分岔动力学

IF 3.4 2区数学

Communications in Nonlinear Science and Numerical Simulation Pub Date : 2025-06-04 DOI: 10.1016/j.cnsns.2025.108979

Zeli Zhou , Qi Quan , Jianjun Jiao , Xiangjun Dai

{"title":"Bifurcation dynamics of a predator–prey model with impulsive density-dependent nonlinear pesticide spraying and predator release","authors":"Zeli Zhou , Qi Quan , Jianjun Jiao , Xiangjun Dai","doi":"10.1016/j.cnsns.2025.108979","DOIUrl":"10.1016/j.cnsns.2025.108979","url":null,"abstract":"<div><div>In this study, we propose a predator–prey model incorporating impulsive density-dependent nonlinear pesticide spraying and the release of predators (natural enemy of the pest) at different fixed moments. The pest extinction semi-trivial periodic solution is derived. Further, global asymptotic stability of the obtained periodic solution and the permanence of the studied model are acquired. Depending on the maximum number of pest natural enemies released impulsively, the threshold for pest extinction is derived. By considering the impulsive period as a bifurcation parameter, the condition for a supercritical bifurcation in the system is obtained. To verify the correctness of the results obtained in this paper, study the impact of key parameters on the pest extinction threshold condition, and explore more complex dynamic behaviors of the model, numerical simulations are conducted. These simulations demonstrate that the optimal impulsive control period varies for different pest management strategies. Moreover, the maximum release quantity of natural enemies, the impulsive control period, and the maximal fatality rate of pesticide for pest significantly influence the dynamic behaviors of the model. The results presented in this paper offer significant theoretical implications for integrated pest management.</div></div>","PeriodicalId":50658,"journal":{"name":"Communications in Nonlinear Science and Numerical Simulation","volume":"150 ","pages":"Article 108979"},"PeriodicalIF":3.4,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222091","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

KAM theorems for nonlinear higher dimensional Schrödinger equation systems in three different ways 非线性高维Schrödinger方程系统的三种不同方法的KAM定理

IF 3.4 2区数学

Communications in Nonlinear Science and Numerical Simulation Pub Date : 2025-06-04 DOI: 10.1016/j.cnsns.2025.108981

Ningning Chang , Yingnan Sun

引用次数: 0

Node center identification in complex networks based on Jensen–Shannon divergence 基于Jensen-Shannon散度的复杂网络节点中心识别

IF 3.4 2区数学

Communications in Nonlinear Science and Numerical Simulation Pub Date : 2025-06-03 DOI: 10.1016/j.cnsns.2025.108977

Bowen Han, Guochen Feng, Pengjian Shang

{"title":"Node center identification in complex networks based on Jensen–Shannon divergence","authors":"Bowen Han, Guochen Feng, Pengjian Shang","doi":"10.1016/j.cnsns.2025.108977","DOIUrl":"10.1016/j.cnsns.2025.108977","url":null,"abstract":"<div><div>The evaluation of node centrality remains a critical challenge in the field of complex network research. This paper proposes a novel method, the <span><math><mrow><mi>J</mi><mi>S</mi><mi>D</mi></mrow></math></span> method, which integrates local and global information to measure node centrality. The method employs Shannon entropy to quantify local centrality and Jensen–Shannon (<span><math><mrow><mi>J</mi><mi>S</mi></mrow></math></span>) divergence to compute inter-community distances, thereby assessing topological differences between communities and measuring global centrality. Experiments conducted on both real and random networks evaluated the impact of central nodes identified by the <span><math><mrow><mi>J</mi><mi>S</mi><mi>D</mi></mrow></math></span> method on network efficiency. Simulation results demonstrate that in networks with distinct community structures, the <span><math><mrow><mi>J</mi><mi>S</mi><mi>D</mi></mrow></math></span> method provides more accurate node centrality measurements compared to the <span><math><mrow><mi>B</mi><mi>C</mi></mrow></math></span>, <span><math><mrow><mi>C</mi><mi>C</mi><mi>I</mi></mrow></math></span>, <span><math><mrow><mi>C</mi><mi>B</mi><mi>C</mi></mrow></math></span>, <span><math><mrow><mi>C</mi><mi>O</mi><mi>M</mi><mi>M</mi></mrow></math></span>, and <span><math><mrow><mi>C</mi><mi>I</mi></mrow></math></span> methods. Additionally, the repetition frequency of central ranking nodes indicates that the <span><math><mrow><mi>J</mi><mi>S</mi><mi>D</mi></mrow></math></span> method effectively distinguishes the centrality of different nodes. Finally, the paper discusses the impact of different combination methods on measurement performance, revealing that incorporating additional community information further enhances the method’s effectiveness.</div></div>","PeriodicalId":50658,"journal":{"name":"Communications in Nonlinear Science and Numerical Simulation","volume":"150 ","pages":"Article 108977"},"PeriodicalIF":3.4,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144252911","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

Distributed fault detection for a class of network systems: Optimal unknown input observer design 一类网络系统的分布式故障检测：最优未知输入观测器设计

IF 3.4 2区数学

Communications in Nonlinear Science and Numerical Simulation Pub Date : 2025-06-03 DOI: 10.1016/j.cnsns.2025.108976

Ya-Jun Tang , Xiao-Jian Li

{"title":"Distributed fault detection for a class of network systems: Optimal unknown input observer design","authors":"Ya-Jun Tang , Xiao-Jian Li","doi":"10.1016/j.cnsns.2025.108976","DOIUrl":"10.1016/j.cnsns.2025.108976","url":null,"abstract":"<div><div>This paper is concerned with the fault detection problem for a class of network systems composed of multiple clusters with unknown system matrices. Each cluster consists of multiple subsystems and the connections between clusters are unmeasurable. For these unmeasurable connections in network systems, traditional system identification and fault detection methods may be difficult to be directly applied. To solve this problem, the subspace instrumental variable method is proposed under the distributed framework, which utilizes the intersection of subspaces on local observations as the states of connections to further identify the local cluster subsystem matrices. Based on the result of identification, the unknown input observer (UIO) is then designed to detect the faults of local cluster systems. However, these connections also lead to the rank conditions for designing UIO not being satisfied. Thus, the unknown input decomposition approach is presented to address this problem, such that the decouplable part is eliminated from the error system and the impact of undecouplable part is attenuated by robust performance index. Finally, the effectiveness and advantages of the proposed fault detection scheme are verified via numerical simulation and comparative analysis.</div></div>","PeriodicalId":50658,"journal":{"name":"Communications in Nonlinear Science and Numerical Simulation","volume":"150 ","pages":"Article 108976"},"PeriodicalIF":3.4,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222092","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

Hyperbolic structure for multiplicative noise saddle using Lagrangian descriptors 使用拉格朗日描述符的乘性噪声鞍的双曲结构

IF 3.4 2区数学

Communications in Nonlinear Science and Numerical Simulation Pub Date : 2025-06-02 DOI: 10.1016/j.cnsns.2025.108971

Huan Liao , Jiaopeng Yang

引用次数: 0

Hamilton–Pfaff type PDEs through multi-dimensional fractional optimization problems Hamilton-Pfaff型偏微分方程的多维分数优化问题

IF 3.4 2区数学

Communications in Nonlinear Science and Numerical Simulation Pub Date : 2025-06-02 DOI: 10.1016/j.cnsns.2025.108969

Octavian Postavaru , Antonela Toma , Savin Treanţă

引用次数: 0

Hidden memory chaotic attractors in simple nonequilibrium fractional order systems 简单非平衡分数阶系统的隐藏记忆混沌吸引子