Chaos: An Interdisciplinary Journal of Nonlinear Science最新文献

Critical behaviors of nonlinear contagion models with recurrent mobility patterns 具有循环流动模式的非线性传染模型的临界行为

Chaos: An Interdisciplinary Journal of Nonlinear Science Pub Date : 2023-08-01 DOI: 10.1063/5.0155257

Yanting Li, Xiaoqun Wu, Su Zhong, Zhenghua Huang

引用次数: 0

Undulations in tubular origami tessellations: A connection to area-preserving maps 管状折纸镶嵌中的波动:与保面积图的联系

Chaos: An Interdisciplinary Journal of Nonlinear Science Pub Date : 2023-08-01 DOI: 10.1063/5.0160803

Rinki Imada, Tomohiro Tachi

{"title":"Undulations in tubular origami tessellations: A connection to area-preserving maps","authors":"Rinki Imada, Tomohiro Tachi","doi":"10.1063/5.0160803","DOIUrl":"https://doi.org/10.1063/5.0160803","url":null,"abstract":"Origami tessellations, whose crease pattern has translational symmetries, have attracted significant attention in designing the mechanical properties of objects. Previous origami-based engineering applications have been designed based on the “uniform-folding” of origami tessellations, where the folding of each unit cell is identical. Although “nonuniform-folding” allows for nonlinear phenomena that are impossible through uniform-folding, there is no universal model for nonuniform-folding, and the underlying mathematics for some observed phenomena remains unclear. Wavy folded states that can be achieved through nonuniform-folding of the tubular origami tessellation called a waterbomb tube are an example. Recently, the authors formulated the kinematic coupled motion of unit cells within a waterbomb tube as the discrete dynamical system and identified a correspondence between its quasiperiodic solutions and wavy folded states. Here, we show that the wavy folded state is a universal phenomenon that can occur in the family of rotationally symmetric tubular origami tessellations. We represent their dynamical system as the composition of the two 2D mappings: taking the intersection of three spheres and crease pattern transformation. We show the universality of the wavy folded state through numerical calculations of phase diagrams and a geometric proof of the system’s conservativeness. Additionally, we present a non-conservative tubular origami tessellation, whose crease pattern includes scaling. The result demonstrates the potential of the dynamical system model as a universal model for nonuniform-folding or a tool for designing metamaterials.","PeriodicalId":340975,"journal":{"name":"Chaos: An Interdisciplinary Journal of Nonlinear Science","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128053890","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: 2

Information dissemination evolution under group feedback 群体反馈下的信息传播演化

Chaos: An Interdisciplinary Journal of Nonlinear Science Pub Date : 2023-08-01 DOI: 10.1063/5.0133755

Y. Yang, F. Nian, J. S. Liu

{"title":"Information dissemination evolution under group feedback","authors":"Y. Yang, F. Nian, J. S. Liu","doi":"10.1063/5.0133755","DOIUrl":"https://doi.org/10.1063/5.0133755","url":null,"abstract":"In this paper, based on the feedback mechanism from the perspective of network groups, the evolutionary characteristics and laws of group networks under information dissemination are studied. First, the network is divided into groups of different sizes, and each group is given a dynamically changing group activity and a positive degree of response to different categories of information. Second, a feedback-based model of information dissemination in group networks is developed, which takes into account the differences between same-group and cross-group dissemination of information. Next, the model is applied to a scale-free network and a small-world network for simulation experiments. The experimental results show that, under the feedback mechanism, the main factor affecting the final evolutionary results of each group size in the small-world network is group positivity, which has little relationship with the initial size; similarly, the main factor affecting the average degree of each group in the scale-free network is also group positivity, which has nothing to do with the initial average degree. Finally, the method is applied to a real network to verify the rationality and effectiveness of the proposed model.","PeriodicalId":340975,"journal":{"name":"Chaos: An Interdisciplinary Journal of Nonlinear Science","volume":"34 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120995931","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

Zig-zag structures in silver dichromate precipitate 重铬酸银沉淀中的锯齿状结构

Chaos: An Interdisciplinary Journal of Nonlinear Science Pub Date : 2023-08-01 DOI: 10.1063/5.0153619

Débora Carvalho, Stefan C. Müller, Torsten Rahne, K. Tsuji, A. Polezhaev

引用次数: 0

Bifurcation and chaos detection of a fractional Duffing–van der Pol oscillator with two periodic excitations and distributed time delay 具有两个周期激励和分布时滞的分数阶Duffing-van der Pol振荡器的分岔和混沌检测

Chaos: An Interdisciplinary Journal of Nonlinear Science Pub Date : 2023-08-01 DOI: 10.1063/5.0160812

Yufeng Zhang, Jing Li, Shaotao Zhu, Hongzhen Zhao

{"title":"Bifurcation and chaos detection of a fractional Duffing–van der Pol oscillator with two periodic excitations and distributed time delay","authors":"Yufeng Zhang, Jing Li, Shaotao Zhu, Hongzhen Zhao","doi":"10.1063/5.0160812","DOIUrl":"https://doi.org/10.1063/5.0160812","url":null,"abstract":"This paper analytically and numerically investigates the dynamical characteristics of a fractional Duffing–van der Pol oscillator with two periodic excitations and the distributed time delay. First, we consider the pitchfork bifurcation of the system driven by both a high-frequency parametric excitation and a low-frequency external excitation. Utilizing the method of direct partition of motion, the original system is transformed into an effective integer-order slow system, and the supercritical and subcritical pitchfork bifurcations are observed in this case. Then, we study the chaotic behavior of the system when the two excitation frequencies are equal. The necessary condition for the existence of the horseshoe chaos from the homoclinic bifurcation is obtained based on the Melnikov method. Besides, the parameters effects on the routes to chaos of the system are detected by bifurcation diagrams, largest Lyapunov exponents, phase portraits, and Poincaré maps. It has been confirmed that the theoretical predictions achieve a high coincidence with the numerical results. The techniques in this paper can be applied to explore the underlying bifurcation and chaotic dynamics of fractional-order models.","PeriodicalId":340975,"journal":{"name":"Chaos: An Interdisciplinary Journal of Nonlinear Science","volume":"82 9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124458733","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

Exploring inbreeding dynamics by considering reproductive bound and polygyny 从生殖约束和一夫多妻制的角度探讨近交动力学

Chaos: An Interdisciplinary Journal of Nonlinear Science Pub Date : 2023-08-01 DOI: 10.1063/5.0160583

Jibeom Choi, Junpyo Park

{"title":"Exploring inbreeding dynamics by considering reproductive bound and polygyny","authors":"Jibeom Choi, Junpyo Park","doi":"10.1063/5.0160583","DOIUrl":"https://doi.org/10.1063/5.0160583","url":null,"abstract":"Inbreeding is a clinically significant measure of a population dependent on human social structures including the population size or the cultural traits. Here, we propose an expanded and elaborate model to analyze the inbreeding within a population where explicit polygyny and inbreeding bounds are taken into account. Unlike the models presented so far, we implemented biologically realistic assumptions that there is the disproportionate probability of males to reproduce (polygyny) and female reproduction is bounded. Using the proposed model equations, we changed the parameters that represent the polygyny degree, the female reproductive bound correlated to the mutation rate, and the total population size. The disappearance of the polygyny that numerous human societies experienced results in the long-lasting effect of the decreasing inbreeding coefficient. Decreased female reproductive bound correlated with a higher mutation rate reveals similar results. After the effect of each factor is analyzed, we modeled the dynamics of the inbreeding coefficient throughout an imaginary human population where polygyny disappears and late marriage becomes prevalent. In this group, the population size gradually and exponentially increases reflecting the traits of prehistoric human society and rising agricultural productivity. To observe how late and less marriage, the feature of the modern developed society, affects the inbreeding dynamics, the female reproductive bound and the population size were assumed to decrease after the population upsurge. The model can explain the decreasing trend of the prehistoric inbreeding coefficient of the actual human population and predict how the trend will be shifted when traits of modern societies continue.","PeriodicalId":340975,"journal":{"name":"Chaos: An Interdisciplinary Journal of Nonlinear Science","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124962780","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

Bursting multistability induced by double-Hopf bifurcation 双hopf分岔引起的突发多稳定性

Chaos: An Interdisciplinary Journal of Nonlinear Science Pub Date : 2023-08-01 DOI: 10.1063/5.0157718

Yibo Xia, S. Yanchuk, Yichuan Cao, Qinsheng Bi, Jürgen Kurths

引用次数: 0

The attractor structure of functional connectivity in coupled logistic maps 耦合逻辑映射中功能连通性的吸引子结构

Chaos: An Interdisciplinary Journal of Nonlinear Science Pub Date : 2023-08-01 DOI: 10.1063/5.0150889

Venetia Voutsa, Michail Papadopoulos, Vicky Papadopoulou Lesta, Marc-Thorsten Hütt

引用次数: 0

Characterization of time-dependence for dissipative solitons stabilized by nonlinear gradient terms: Periodic and quasiperiodic vs chaotic behavior 非线性梯度项稳定的耗散孤子的时间依赖性表征:周期和准周期与混沌行为

Chaos: An Interdisciplinary Journal of Nonlinear Science Pub Date : 2023-08-01 DOI: 10.1063/5.0156518

O. Descalzi, M. Facão, C. Cartes, M. Carvalho, H. Brand

引用次数: 0

Correlations between COVID-19 cases and temperature, air humidity, and social isolating rate with cross wavelet transform and wavelet coherence: Case study of New York and São Paulo cities 基于交叉小波变换和小波相干性的COVID-19病例与气温、空气湿度和社会隔离率的相关性研究——以纽约和<s:1>圣保罗为例

Chaos: An Interdisciplinary Journal of Nonlinear Science Pub Date : 2023-08-01 DOI: 10.1063/5.0160009

Luciano Aparecido Magrini, Mariana Pelissari Monteiro Aguiar Baroni, Amari Goulart, Marta Cilene Gadotti

{"title":"Correlations between COVID-19 cases and temperature, air humidity, and social isolating rate with cross wavelet transform and wavelet coherence: Case study of New York and São Paulo cities","authors":"Luciano Aparecido Magrini, Mariana Pelissari Monteiro Aguiar Baroni, Amari Goulart, Marta Cilene Gadotti","doi":"10.1063/5.0160009","DOIUrl":"https://doi.org/10.1063/5.0160009","url":null,"abstract":"The COVID-19 pandemic originated in 2019 and has become an endemic disease that we must learn to live with, similar to other strains of influenza. The Organization (WHO) declared on May 5, 2023, in Geneva, Switzerland, the end of the Public Health Emergency of International Concern regarding COVID-19. As vaccines become more widely available and the pandemic appears to be improved, our focus shifts to the challenges we still face. Understanding how external factors like temperature, air humidity, and social isolation impact the spread of the SARS-CoV-2 virus remains a crucial challenge beyond our control. In this study, potential links between the number of COVID-19 cases in São Paulo City (SPC) and New York City (NWC) were explored. Our analysis was carried out utilizing the continuous wavelet transform, alongside other tools such as cross-wavelet transform and wavelet coherence. Based on our findings, there appears to be a correlation between the variables related to low frequencies, which aligns with previous research on the topic. Particularly, our research has revealed a connection between COVID-19 cases and factors such as temperature, air humidity, and social isolation rates. Regarding the latter, our findings indicate that implementing social distancing measures was a wise public policy decision, although the correlation with daily COVID-19 cases requires careful analysis. For this study, we analyzed data from February of 2020, when the first cases were reported in the cities under investigation, SPC and NWC, up until December 31, 2022, by which time the vaccination campaign was well under way.","PeriodicalId":340975,"journal":{"name":"Chaos: An Interdisciplinary Journal of Nonlinear Science","volume":"157 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114900410","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