Applied Mathematics and Computation最新文献_第4页

Stability of partially unstable discrete-time switched positive nonlinear systems with delays 部分不稳定时滞离散时间切换正非线性系统的稳定性

IF 3.5 2区数学

Applied Mathematics and Computation Pub Date : 2025-06-09 DOI: 10.1016/j.amc.2025.129591

Jinyuan Ni , Yin Sheng , Qiang Xiao , Zhigang Zeng , Tingwen Huang

引用次数: 0

Inverse source problems for identifying time and space-dependent coefficients in a 2D generalized diffusion equation 二维广义扩散方程中时空相关系数识别的逆源问题

IF 3.5 2区数学

Applied Mathematics and Computation Pub Date : 2025-06-09 DOI: 10.1016/j.amc.2025.129597

Asim Ilyas , Stefano Serra-Capizzano

引用次数: 0

Q-learning driven cooperative evolution with dual-reputation incentive mechanisms 双声誉激励机制下q学习驱动的合作进化

IF 3.5 2区数学

Applied Mathematics and Computation Pub Date : 2025-06-06 DOI: 10.1016/j.amc.2025.129590

Qianwei Zhang, Xinran Zhang

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引用次数: 0

A Tikhonov-type method for inverse source problems for time-space fractional parabolic equations 时空分数抛物型方程反源问题的tikhonov型方法

IF 3.5 2区数学

Applied Mathematics and Computation Pub Date : 2025-06-06 DOI: 10.1016/j.amc.2025.129567

Nguyen Van Duc , Thi-Phong Nguyen

引用次数: 0

Predefined-time Lyapunov stability for nonlinear systems via a dynamic event-triggered control strategy 基于动态事件触发控制策略的非线性系统的预定义时间Lyapunov稳定性

IF 3.5 2区数学

Applied Mathematics and Computation Pub Date : 2025-06-06 DOI: 10.1016/j.amc.2025.129558

Jie Wu , Rongni Yang , Levente Kovacs , Peng Shi

引用次数: 0

Observer-based fixed-time topology identification and synchronization for complex networks via quantized pinning control strategy 基于观测器的复杂网络固定时间拓扑识别与量化固定控制策略同步

IF 3.5 2区数学

Applied Mathematics and Computation Pub Date : 2025-06-04 DOI: 10.1016/j.amc.2025.129568

Huaiqin Wu , Xueqing Zhao , Lingyan Wang , Jinde Cao

引用次数: 0

Asymptotics for the coefficients of the truncated theta series 截断级数系数的渐近性

IF 3.5 2区数学

Applied Mathematics and Computation Pub Date : 2025-06-04 DOI: 10.1016/j.amc.2025.129592

Renrong Mao

引用次数: 0

Decoding rhythmic complexity: A nonlinear dynamics approach via visibility graphs for classifying asymmetrical rhythmic frameworks of Turkish classical music 解码节奏复杂性：一种非线性动力学方法，通过可见性图分类土耳其古典音乐的不对称节奏框架

IF 3.5 2区数学

Applied Mathematics and Computation Pub Date : 2025-06-04 DOI: 10.1016/j.amc.2025.129565

Fuat Kaan Mirza , Tunçer Baykaş , Mustafa Hekimoğlu , Önder Pekcan , Gönül Paçacı Tunçay

{"title":"Decoding rhythmic complexity: A nonlinear dynamics approach via visibility graphs for classifying asymmetrical rhythmic frameworks of Turkish classical music","authors":"Fuat Kaan Mirza , Tunçer Baykaş , Mustafa Hekimoğlu , Önder Pekcan , Gönül Paçacı Tunçay","doi":"10.1016/j.amc.2025.129565","DOIUrl":"10.1016/j.amc.2025.129565","url":null,"abstract":"<div><div>The non-isochronous, hierarchical rhythmic cycles (usuls) of Turkish Classical Music (TCM) exhibit emergent temporal structures that challenge conventional rhythm analysis based on metrical regularity. To address this challenge, this study presents a complexity-oriented framework for usul classification, grounded in nonlinear time series analysis and network-based representations. Rhythmic signals are processed through energy envelope extraction, diffusion entropy analysis, and spectral transformations to capture multiscale temporal dynamics. Visibility graphs (VGs) are constructed from these representations to encode underlying structural complexity and temporal dependencies. Features derived from VG adjacency matrices serve as complexity-sensitive descriptors and enable high-accuracy classification (0.99) across 40 usul classes and 628 compositions. Energy envelope-derived graphs provide the most discriminative information, highlighting the importance of amplitude modulation in encoding rhythmic structure. Beyond classification, the analysis reveals self-organizing patterns and signatures of complexity, such as quasi-periodicity, scale-dependent variability, and entropy saturation, suggesting that usuls function as adaptive, nonlinear systems rather than metrically constrained patterns. The topological features extracted from the resulting graphs align with theoretical constructs from complexity science, such as modularity and long-range temporal correlations. This positions usul as an exemplary case for studying structured temporal complexity in cultural artifacts through the lens of dynamical systems. These findings contribute to computational rhythm analysis by demonstrating the efficacy of complexity measures in characterizing culturally specific rhythmic systems.</div></div>","PeriodicalId":55496,"journal":{"name":"Applied Mathematics and Computation","volume":"507 ","pages":"Article 129565"},"PeriodicalIF":3.5,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144204039","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

Rainbow independent triangles in complete split graphs 完全分割图中的彩虹独立三角形

IF 3.5 2区数学

Applied Mathematics and Computation Pub Date : 2025-06-04 DOI: 10.1016/j.amc.2025.129589

Q. Wang, Z.M. Jin

引用次数: 0

Application of multiple two-dimensional interpolation methods to bathymetric data on the FVCOM unstructured triangular grid 多种二维插值方法在FVCOM非结构三角网格上的应用

IF 3.5 2区数学

Applied Mathematics and Computation Pub Date : 2025-06-03 DOI: 10.1016/j.amc.2025.129564

Zongli Ruan , Guobing Qian , Yiwei Wang , Jia Xiao

引用次数: 0