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Chinese Physics B 2022年第3期31卷 146-159页

作者： liang'an huo Yafang Dong Business School University of Shanghai for Science and TechnologyShanghai 200093China

The appearance of rumors intensifies people’s panic and affects social stability. How to control the spread of rumors has become an important issue which is worth studying. In order to more accurately reflect the actual situation in the real world, a stochastic model incorporating media coverage and Lévy noise is proposed to describe the dynamic process of rumor propagation. By introducing two control strategies of popular science education and media coverage in an emergency event, an near-optimal control problem that minimizes the influence and control cost of rumor propagation is *** conditions for near-optimal control of the model are established by using a Hamiltonian function. Then the necessary conditions for near-optimal control are obtained by using the Pontryagin maximum principle. Finally, the effect of popular science education, media coverage and Lévy noise on rumor propagation process control is verified by numerical simulation.

关键词： rumor propagation near-optimal control popular science education media coverage Lévy noise

Near-optimal control of a stochastic rumor spreading model with Holling II functional response function and imprecise parameters

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Chinese Physics B 2021年第12期30卷 182-194页

作者： liang’an huo Xiaomin Chen Business School University of Shanghai for Science and TechnologyShanghai 200093China

In recent years,rumor spreading has caused widespread public panic and affected the whole social harmony and ***,how to control the rumor spreading effectively and reduce its negative influence urgently needs people to pay much *** this paper,we mainly study the near-optimal control of a stochastic rumor spreading model with Holling II functional response function and imprecise ***,the science knowledge propagation and the refutation mechanism as the control strategies are introduced into a stochastic rumor spreading ***,some sufficient and necessary conditions for the near-optimal control of the stochastic rumor spreading model are discussed ***,through some numerical simulations,the validity and availability of theoretical analysis is ***,it shows the significance and effectiveness of the proposed control strategies on controlling rumor spreading,and demonstrates the influence of stochastic disturbance and imprecise parameters on the process of rumor spreading.

关键词： rumor spreading HollingⅡfunctional response function near-optimal control stochastic process

Dynamical behavior and optimal impulse control analysis of a stochastic rumor spreading model

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Chinese Physics B 2022年第11期31卷 188-200页

作者： liang’an huo Xiaomin Chen Business School University of Shanghai for Science and TechnologyShanghai 200093China

The Internet era has brought great convenience to our life and ***,it also makes a bunch of rumors propagate faster and causes even more harm to human ***,it is necessary to perform effective control mechanisms to minimize the negative social impact from ***,firstly,we formulate a rumor spreading model considering psychological factors and thinking time,then,we add white noise(i.e.,stochastic interference)and two pulse control strategies which denote education mechanism and refutation mechanism into the ***,we obtain the global positive solutions and demonstrate the global exponential stability of the unique positive periodic rumor-free ***,we discuss the extinction and persistence of ***,we use Pontriagin’s minimum principle to explore the optimal impulse ***,several numerical simulations are carried out to verify the effectiveness and availability of the theoretical *** conclude that the pulse control strategies have a great influence on controlling rumor spreading,and different control strategies should be adopted under different transmission scenarios.

关键词： rumor spreading stochastic process optimal impulse control education mechanism refutation mechanism

Impact of asymmetric activity on interactions between information diffusion and disease transmission in multiplex networks

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Communications in Theoretical Physics 2023年第7期75卷 1-14页

作者： Xiaoxiao Xie liang’an huo Laijun Zhao Ying Qian Business School University of Shanghai for Science and TechnologyShanghai 200093China

Disease is a serious threat to human *** the characteristics of disease transmission is helpful for people to effectively control *** real life,it is natural to take various measures when people are aware of *** this paper,a novel coupled model considering asymmetric activity is proposed to describe the interactions between information diffusion and disease transmission in multiplex ***,the critical threshold for disease transmission is derived by using the micro-Markov chain ***,the theoretical results are verified by numerical *** results show that reducing the activity level of individuals in the physical contact layer will have a continuous impact on reducing the disease outbreak threshold and suppressing the *** addition,the activity level of individuals in the virtual network has little impact on the transmission of the ***,when individuals are aware of more disease-related information,the higher their awareness of prevention will be,which can effectively inhibit the transmission of *** research results can provide a useful reference for the control of disease transmission.

关键词： asymmetric activity information diffusion disease transmission activity level multiplex networks

Considering individual game behavior and time delay in the multi-channel rumor propagation model

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Communications in Theoretical Physics 2024年第7期76卷 9-29页

作者： Yafang Dong liang'an huo Xiaoxiao Xie Ming Li Business School University of Shanghai for Science and TechnologyShanghai 200093China School of Intelligent Emergency Management University of Shanghai for Science and TechnologyShanghai 200093China

The rapid development of the Internet has accelerated the spread of rumors,posing challenges to social cohesion and *** address this,a multi-channel rumor propagation model incorporating individual game behavior and time delay is *** depicts individuals strategically choosing propagation channels in the rumor spread process,capturing real-world intricacies more ***,the model allowing spreaders to choose between text and video information base *** adoption hinges on benefits versus costs,with payoffs dictating strategy and the propagation process determining an individual's *** theoretical analysis of the model,the propagation threshold and equilibrium points are *** the stability of the model is further demonstrated based on Routh-Hurwitz judgment and Descartes'Rule of *** simulations are conducted to verify the correctness of the theoretical results and the sensitivity of the model to key *** outcomes reveal that increasing the propagation cost of spreaders can significantly curb the spread of *** contrast to the classical ISR model,rumors spread faster and more widely in the improved multi-channel rumor propagation model in this paper,which is a feature more aligned with real-world ***,the validity and predictive ability of the model are verified by using real rumor propagation data sets,indicating that the improved multi-channel rumor propagation model has good practical application and predictive value.

关键词： multi-channel rumor propagation time delay game behavior

Impact of individual behavior adoption heterogeneity on epidemic transmission in multiplex networks

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Chinese Physics B 2023年第10期32卷 756-767页

作者：霍良安于跃 Business School University of Shanghai for Science and TechnologyShanghai 200093China

In recent years, the impact of information diffusion and individual behavior adoption patterns on epidemic transmission in complex networks has received significant attention. In the immunization behavior adoption process, different individuals often make behavioral decisions in different ways, and it is of good practical importance to study the influence of individual heterogeneity on the behavior adoption process. In this paper, we propose a three-layer coupled model to analyze the process of co-evolution of official information diffusion, immunization behavior adoption and epidemic transmission in multiplex networks, focusing on individual heterogeneity in behavior adoption patterns. Specifically, we investigate the impact of the credibility of social media and the risk sensitivity of the population on behavior adoption in further study of the effect of heterogeneity of behavior adoption on epidemic transmission. Then we use the microscopic Markov chain approach to describe the dynamic process and capture the evolution of the epidemic threshold. Finally, we conduct extensive simulations to prove our findings. Our results suggest that enhancing the credibility of social media can raise the epidemic transmission threshold, making it effective at controlling epidemic transmission during the dynamic process. In addition, improving an individuals' risk sensitivity, and thus their taking effective protective measures, can also reduce the number of infected individuals and delay the epidemic outbreak. Our study explores the role of individual heterogeneity in behavior adoption in real networks, more clearly models the effect of the credibility of social media and risk sensitivity of the population on the epidemic transmission dynamic, and provides a useful reference for managers to formulate epidemic control and prevention policies.

关键词： multiplex network epidemic transmission behavior

Clinical features of SARS-CoV-2-associated encephalitis and meningitis amid COVID-19 pandemic

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World Journal of Clinical Cases 2021年第5期9卷 1058-1078页

作者： liang huo Kai-Li Xu Hua Wang Department of Pediatrics Shengjing Hospital of China Medical UniversityShenyang 110004Liaoning ProvinceChina Department of Pediatric Neurology Children’s Hospital Affiliated to Zhengzhou UniversityZhengzhou 450018Henan ProvinceChina Department of Pediatric Neurology Henan Children’s HospitalZhengzhou 450018Henan ProvinceChina Department of Pediatric Neurology Shengjing Hospital of China Medical UniversityShenyang 110004Liaoning ProvinceChina

BACKGROUND Since the severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)epidemic,numerous studies have been published on SARS-CoV-2-related encephalitis/meningitis,but it has not been established if there are specific clinical characteristics of encephalitis/meningitis associated with SARS-CoV-2 *** To identify the specific clinical features of cases of encephalitis/meningitis associated with SARS-CoV-2 infection in the context of this virus infection pandemic and investigate their relationship with SARS-CoV-2 *** We searched PubMed,and included single case reports and case series with full text in English,reporting original data of coronavirus disease-19(COVID-19)patients with encephalitis/meningitis and a confirmed recent SARS-CoV-2 *** data were *** We identified 22 articles(18 single case reports and 4 case series)reporting on a total of 32 encephalitis/meningitis patients with confirmed SARS-CoV-2 ***-CoV-2 infection was confirmed through reverse transcriptase-polymerasechain-reaction(RT-PCR)in 96.88%of cases.A total of 22(68.75%)patients had symptoms of SARS-CoV-2 infection in about 1 wk(7.91 d)preceding the onset of neurologic *** most common neurological symptoms were consciousness disturbance(59.38%),seizure(21.88%),delirium(18.75%),and headache(18.75%).Four cases were confirmed by positive RT-PCR results in cerebrospinal fluid(CSF),one was confirmed by positive RT-PCR results in postoperative brain tissue,and one by the presence of SARS-CoV-2 antibodies in *** mainly damaged targets identified by neuroimaging included the temporal lobe(15.63%),white matter(12.5%),frontal lobe(9.38%),corpus callosum(9.38%),and cervical spinal cord(9.38%).Eighty percent of patients had electroencephalograms that showed a diffuse slow ***-eight(87.5%)patients were administered with specific *** majority(65.63%)of patients improved following systemic *** Enceph

关键词： COVID-19 SARS-CoV-2 Encephalitis Meningitis Clinical features System review

Dynamics of a stochastic rumor propagation model incorporating media coverage and driven by Lévy noise

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Chinese Physics B 2021年第8期30卷 182-190页

作者： liang-An huo Ya-Fang Dong Ting-Ting Lin Business School University of Shanghai for Science and TechnologyShanghai 200093China School of Electrical and Information Engineering Shanghai Jiao Tong UniversityShanghai 200240China

With the development of information technology,rumors propagate faster and more widely than in the *** this paper,a stochastic rumor propagation model incorporating media coverage and driven by Lévy noise is *** global positivity of the solution process is proved,and further the basic reproductive number R_(0) is *** R_(0)1,the rumor will keep spreading and the system will oscillate randomly near the rumor equilibrium point of the deterministic *** results show that the oscillation amplitude is related to the disturbance of the *** addition,increasing media coverage can effectively reduce the final spread of ***,the above results are verified by numerical simulation.

关键词： rumor propagation stochastic process Lévy jump media coverage

Studying the co-evolution of information diffusion,vaccination behavior and disease transmission in multilayer networks with local and global effects

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Chinese Physics B 2024年第3期33卷 677-689页

作者：霍良安武兵杰 Business School University of Shanghai for Science and TechnologyShanghai 200093China School of Intelligent Emergency Management University of Shanghai for Science and TechnologyShanghai 200093China

Today,with the rapid development of the internet,a large amount of information often accompanies the rapid transmission of disease outbreaks,and increasing numbers of scholars are studying the relationship between information and the disease transmission process using complex *** fact,the disease transmission process is very *** this information,there will often be individual behavioral measures and other factors to *** of the previous research has aimed to establish a two-layer network model to consider the impact of information on the transmission process of disease,rarely divided into information and behavior,*** carry out a more in-depth analysis of the disease transmission process and the intrinsic influencing mechanism,this paper divides information and behavior into two layers and proposes the establishment of a complex network to study the dynamic co-evolution of information diffusion,vaccination behavior,and disease *** is achieved by considering four influential relationships between adjacent layers in multilayer *** the information layer,the diffusion process of negative information is described,and the feedback effects of local and global vaccination are *** the behavioral layer,an individual's vaccination behavior is described,and the probability of an individual receiving a vaccination is influenced by two factors:the influence of negative information,and the influence of local and global disease *** the disease layer,individual susceptibility is considered to be influenced by vaccination *** state transition equations are derived using the micro Markov chain approach(MMCA),and disease prevalence thresholds are *** is demonstrated through simulation experiments that the negative information diffusion is less influenced by local vaccination behavior,and is mainly influenced by global vaccination behavior;vaccination behavior is mainly influenced by local d

关键词： information diffusion vaccination behavior disease transmission multilayer networks local and global effect

Transient Dynamic Analysis of A Variable-Length Rope-Driven Wave Energy System

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China Ocean Engineering 2022年第3期36卷 474-487页

作者： QUAN Wei-cai OU Ding-chao XU Jing-wei huo liang-qing XI Yi National-local Joint Engineering Laboratory for Marine Mineral Resources Exploration Equipment and Safety Technology Hunan University of Science and TechnologyXiangtan 411201China State key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of SciencesShenyang 110169China

A new dynamic model of a variable-length rope,which could be used for the transient analysis of a buoy-rope-generator(BRG)wave energy system,was proposed in this *** model started from the basic dynamic equations of variable mass system,and took into account the physical properties such as axial force,shear and *** to the principle of D'Alembert-Lagrange,the equivalent integral weak formulation was firstly obtained,and through consistent linearization and isoparametric discretization,the finite element model of the variable-length rope was then *** Bathe scheme was employed to solve the model numerically,based on its excellent performance in solving nonlinear dynamic problems,and an automatic time step size algorithm was designed according to the number of iterations of the two substeps of Bathe *** procedures of rope mesh regeneration were also put forward,where only one variable-length element was always located at the top end of the rope,and the rest were all fixed-length *** proposed variable-length rope model and solution schemes were verified through comparison with the results of a tank ***,the transient dynamics of a kind of BRG system was analyzed and discussed.

关键词： cable dynamics variable-length buoy-rope-generator numerical analysis