Chaos Solitons & Fractals最新文献_第10页

A resilient event-triggered control strategy for truck platooning cyber–physical systems against denial-of-service attacks 针对拒绝服务攻击的卡车排队网络物理系统的弹性事件触发控制策略

IF 5.3 1区数学

Chaos Solitons & Fractals Pub Date : 2024-08-26 DOI: 10.1016/j.chaos.2024.115424

{"title":"A resilient event-triggered control strategy for truck platooning cyber–physical systems against denial-of-service attacks","authors":"","doi":"10.1016/j.chaos.2024.115424","DOIUrl":"10.1016/j.chaos.2024.115424","url":null,"abstract":"<div><p>With the deployment of vehicle-to-everything(V2X) communication technology, Denial-of-Service(DoS) attacks gradually pose potential threats for the truck platooning cyber–physical systems(TPCPS) due to disruption of information exchange in vehicular networks, resulting in instability of truck platooning and even traffic accidents. Motivated by this, the study proposes a resilient event-triggered control strategy to maintain the performance or stability of the TPCPS when DoS attacks happen. First, a resilient event-triggered mechanism is proposed to ensure that the onboard controller can receive and update status information in time after attack intervals, mitigating effect of the vehicle-to-vehicle(V2V) communication disruptions. Subsequently, the sufficient condition is derived which is to confine DoS attacks and makes a key role in maintaining the platoon’s internal stability. To guarantee the consensus control performance of the TPCPS, the switched event-triggered controller is designed by the Lyapunov approach. The controller is expected to output corresponding control based on the updated status information in communication interval. Ultimately, the proposed strategy’s effectiveness is validated through simulations. The proposed resilient event-triggered control strategy is shown to be able to effectively mitigate abnormalities in the TPCPS under DoS attacks, thus ensuring safe and comfortable driving. Compared with event-triggered sliding mode control, the proposed method achieves smaller inter-vehicle distances while ensuring stability, enhancing traffic efficiency.</p></div>","PeriodicalId":9764,"journal":{"name":"Chaos Solitons & Fractals","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142076627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Matryoshka multistability: Coexistence of an infinite number of exactly self-similar nested attractors in a fractal phase space 马特里奥什卡多稳定性：分形相空间中无数完全自相似的嵌套吸引子共存

IF 5.3 1区数学

Chaos Solitons & Fractals Pub Date : 2024-08-26 DOI: 10.1016/j.chaos.2024.115412

引用次数: 0

Deep Learning models for the analysis of time series: A practical introduction for the statistical physics practitioner 用于分析时间序列的深度学习模型：统计物理学从业人员实用入门

IF 5.3 1区数学

Chaos Solitons & Fractals Pub Date : 2024-08-26 DOI: 10.1016/j.chaos.2024.115359

引用次数: 0

Semi-visual obfuscation image encryption algorithm based on π-type chaotic amplifier and self-hiding fuzzy 基于π型混沌放大器和自隐藏模糊的半视觉混淆图像加密算法

IF 5.3 1区数学

Chaos Solitons & Fractals Pub Date : 2024-08-26 DOI: 10.1016/j.chaos.2024.115402

{"title":"Semi-visual obfuscation image encryption algorithm based on π-type chaotic amplifier and self-hiding fuzzy","authors":"","doi":"10.1016/j.chaos.2024.115402","DOIUrl":"10.1016/j.chaos.2024.115402","url":null,"abstract":"<div><p>The level of privacy may vary across different parts of an image. This paper proposes a semi-visual obfuscation algorithm for images that takes into account the varying levels of privacy in different areas of the image. Firstly, we present a novel One-dimensional Uniform Chaotic Amplifier (1_DUCA) aimed at expanding the parameter range and enhancing the uniformity of the standard one-dimensional chaotic map. Next, we employ a detection algorithm or autonomous frame selection to identify the precise location of the area with strong privacy. Finally, we apply noise to blur the selected area and conceal vital bit information within the image. At this point, the image has certain visual effects, and only people with prior knowledge can recognize the image. Furthermore, in the last stage of image encryption, we employ a weight scrambling and high-low bit coupled diffusion technology to completely obscure the visual effects of the image. It is noteworthy that the experimental results and performance analysis have verified the practicality and security of the encryption algorithm. Moreover, they have also demonstrated the robust amplification effect of the employed amplifier.</p></div>","PeriodicalId":9764,"journal":{"name":"Chaos Solitons & Fractals","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142076631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

A conjugate method for simulating the dynamics of stochastic urban spatial network models 模拟随机城市空间网络模型动态的共轭方法

IF 5.3 1区数学

Chaos Solitons & Fractals Pub Date : 2024-08-24 DOI: 10.1016/j.chaos.2024.115430

引用次数: 0

The impact of conditional coupling based on environment comparison between interdependent networks on the evolution of cooperation 基于相互依存网络间环境比较的条件耦合对合作演化的影响

IF 5.3 1区数学

Chaos Solitons & Fractals Pub Date : 2024-08-24 DOI: 10.1016/j.chaos.2024.115427

{"title":"The impact of conditional coupling based on environment comparison between interdependent networks on the evolution of cooperation","authors":"","doi":"10.1016/j.chaos.2024.115427","DOIUrl":"10.1016/j.chaos.2024.115427","url":null,"abstract":"<div><p>The coupling between interdependent networks is a crucial factor affecting the evolution of cooperation. Actually, not all nodes in different sub-networks of the interdependent network can establish a one-to-one corresponding coupling relationship, and whether the connection between corresponding nodes can be built is often related to the local environment and global environment where the individual is located. Therefore, we explore how the conditional coupling between interdependent networks based on the comparisons of local and global environments affects the spread of cooperative behavior. We consider two types of conditional coupling modes: static coupling and dynamic coupling. The classic prisoner’s dilemma is chosen as the fundamental game model. The numerical simulation results on the interdependent network constructed by square lattices show that conditional coupling based on environmental comparison favors the propagation of cooperation, regardless of the type of conditional coupling. And the promotion level of cooperation is proportional to the coupling strength. Moreover, we further perform the simulation experiments on the interdependent networks composed of ER (Erdös–Rényi) random networks. Our explorations may be helpful for understanding the survival and maintenance of cooperation in the interconnected and interrelated systems.</p></div>","PeriodicalId":9764,"journal":{"name":"Chaos Solitons & Fractals","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142049448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Optimal control problem governed by a kind of Kirchhoff-type equation 受一种基尔霍夫方程支配的优化控制问题

IF 5.3 1区数学

Chaos Solitons & Fractals Pub Date : 2024-08-24 DOI: 10.1016/j.chaos.2024.115422

引用次数: 0

Predefined time quasi-sliding mode control with fast convergence based on a switchable exponent for nonlinear systems 基于可切换指数的非线性系统快速收敛的预定义时间准滑动模式控制

IF 5.3 1区数学

Chaos Solitons & Fractals Pub Date : 2024-08-24 DOI: 10.1016/j.chaos.2024.115423

引用次数: 0

Fractional-order heterogeneous neuron network based on coupled locally-active memristors and its application in image encryption and hiding 基于耦合局部活性忆阻器的分数阶异构神经元网络及其在图像加密和隐藏中的应用

IF 5.3 1区数学

Chaos Solitons & Fractals Pub Date : 2024-08-24 DOI: 10.1016/j.chaos.2024.115397

{"title":"Fractional-order heterogeneous neuron network based on coupled locally-active memristors and its application in image encryption and hiding","authors":"","doi":"10.1016/j.chaos.2024.115397","DOIUrl":"10.1016/j.chaos.2024.115397","url":null,"abstract":"<div><p>Synaptic crosstalk significantly influences neural firing in the brain. Locally-active memristors can effectively emulate neural network synapses and have a significant importance in neural network research. This paper designs a tristable locally-active memristive model and presents a novel fractional-order (FO) heterogeneous neuron network. This neural network consists of Hindmarsh-Rose (HR) neuron and FitzHugh-Nagumo (FHN) neuron, which are connected by coupling FO locally-active memristors. The research found that changes in the order of different dimensions have a significant effect on the neural network firing through the three-parameter bifurcation diagram. Moreover, it is found that the locally-active memristor as a synapse can affect the coexistence firing behavior of the network. The complex dynamics have been studied numerically by using phase diagrams, Lyapunov exponent spectrum, bifurcation diagram and extreme multistability can be found. In particular, the system can generate a complex bursting behavior in the presence of an external current. In order to verify the accuracy of the simulation, the phase diagram of FO heterogeneous neuron network is implemented by STM32 microcontroller, and results of the experiments are in great agreement with results of the numerical simulations. Finally, an image encryption and hiding method based on FO heterogeneous neuron network and discrete wavelet transform (DWT) is proposed. The experimental results demonstrate that the encryption and hiding scheme has excellent security and strong robustness.</p></div>","PeriodicalId":9764,"journal":{"name":"Chaos Solitons & Fractals","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142045824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

On the stability of a single-species model with a generic delay distribution kernel 论具有一般延迟分布核的单物种模型的稳定性

IF 5.3 1区数学

Chaos Solitons & Fractals Pub Date : 2024-08-24 DOI: 10.1016/j.chaos.2024.115425

引用次数: 0