Mathematics and Computers in Simulation最新文献

Numerical steepest descent method for computing oscillatory-type Bessel integral transforms

IF 4.4 2区数学

Mathematics and Computers in Simulation Pub Date : 2025-04-24 DOI: 10.1016/j.matcom.2025.04.016

Ruyun Chen, Yu Li, Yongxiong Zhou

引用次数: 0

Convergence of individual opinions during a bi-virus epidemic and its impact

IF 4.4 2区数学

Mathematics and Computers in Simulation Pub Date : 2025-04-22 DOI: 10.1016/j.matcom.2025.04.006

Shidong Zhai , Zhenmei Zhang , Jun Ma

{"title":"Convergence of individual opinions during a bi-virus epidemic and its impact","authors":"Shidong Zhai , Zhenmei Zhang , Jun Ma","doi":"10.1016/j.matcom.2025.04.006","DOIUrl":"10.1016/j.matcom.2025.04.006","url":null,"abstract":"<div><div>This paper investigates the intricate interplay between individual opinions and bi-virus transmission in a city or country. The proposed model considers two competing viruses, where virus transmission is shaped by individuals’ perceptions of the epidemic, which are, in turn, influenced by the transmission dynamics. Building on the concept of an opinion-dependent reproduction number, we conduct a rigorous theoretical analysis of the proposed model, focusing on equilibrium stability and parameter sensitivity. From the analysis of simulated data, we derive the following insights: (1) Negative opinions during an epidemic, such as believing the epidemic is not severe or distrusting public health measures, may result in inaccurate community responses and potentially reignite outbreaks. (2) In the bi-virus-opinion model, while perceived epidemic severity can reduce infection rates, it does not alter the dominance of the prevailing virus under conditions of high epidemic severity. Furthermore, we examine the role of stubborn opinions to reshape public perception, which can facilitate epidemic eradication under mild epidemic conditions. In the case of dual-virus competition, stubborn opinions can alter the final competitive outcomes. Finally, numerical simulations are performed to validate the findings and corroborate them with real-world data from the SARS-CoV-2 pandemic.</div></div>","PeriodicalId":49856,"journal":{"name":"Mathematics and Computers in Simulation","volume":"236 ","pages":"Pages 334-353"},"PeriodicalIF":4.4,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874387","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

Dynamic analysis of layered elastic medium by TD-BEM using the iteration technique in the whole time domain

IF 4.4 2区数学

Mathematics and Computers in Simulation Pub Date : 2025-04-20 DOI: 10.1016/j.matcom.2025.04.018

Xiaofei Qin , Hongjun Li , Changnv Zeng

引用次数: 0

Complex dynamics and encryption application of a 3D dual-memristor oscillatory hyperchaotic map

IF 4.4 2区数学

Mathematics and Computers in Simulation Pub Date : 2025-04-19 DOI: 10.1016/j.matcom.2025.04.005

Qiang Lai , Chongkun Zhu , Minghong Qin , Zhiqiang Wan

引用次数: 0

Domain truncation error analysis for a multidimensional system of PDEs of option prices

IF 4.4 2区数学

Mathematics and Computers in Simulation Pub Date : 2025-04-17 DOI: 10.1016/j.matcom.2025.04.002

Anindya Goswami , Kuldip Singh Patel

引用次数: 0

Stability, bifurcation and characteristics of chaos in a new commensurate and incommensurate fractional-order ecological system

IF 4.4 2区数学

Mathematics and Computers in Simulation Pub Date : 2025-04-17 DOI: 10.1016/j.matcom.2025.04.015

Jiayi Liu, Ruihong Li, Dongmei Huang

{"title":"Stability, bifurcation and characteristics of chaos in a new commensurate and incommensurate fractional-order ecological system","authors":"Jiayi Liu, Ruihong Li, Dongmei Huang","doi":"10.1016/j.matcom.2025.04.015","DOIUrl":"10.1016/j.matcom.2025.04.015","url":null,"abstract":"<div><div>In this paper, a new incommensurate fractional-order ecological system describing the interaction between permafrost melting, vegetation degradation and temperature is introduced to explore its dynamical behavior. At first, the existence and uniqueness of the new system is proved utilizing Picard’s operator and Banach fixed-point theorem. Next, the influence of simultaneous changing system parameter and fractional orders on the stability of the incommensurate system is discussed, and the degree of influence of each fractional order is visually compared and analyzed. In addition, it is also indicated that parameter changes can cause the static bifurcation. Subsequently, the sufficient conditions and an analytical expression for the critical value of Hopf bifurcation caused by system parameter in the incommensurate fractional-order ecological system are provided for the first time, and the bifurcation diagrams are utilized to verify the result. Furthermore, by observing the bifurcation diagram of incommensurate and corresponding commensurate system, it can be deduced that changes in the fractional orders of incommensurate system can cause Hopf bifurcation to be postponed or advanced. Then, the chaotic behaviors of commensurate and incommensurate system are explored by utilizing multiple numerical indicators. It is worth noting that there exists a path from quasi-periodic motion to chaos in the system. Finally, the chaotic domain is proposed to investigate the influence of fractional orders and parameter on chaotic behaviors in the incommensurate fractional-order system.</div></div>","PeriodicalId":49856,"journal":{"name":"Mathematics and Computers in Simulation","volume":"236 ","pages":"Pages 248-269"},"PeriodicalIF":4.4,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143864956","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

A diffusive SIS epidemic model in a heterogeneous environment: Random dispersion vs. nonlocal dispersion

IF 4.4 2区数学

Mathematics and Computers in Simulation Pub Date : 2025-04-13 DOI: 10.1016/j.matcom.2025.03.032

Salih Djilali , Yuming Chen , Shaofen Zou

{"title":"A diffusive SIS epidemic model in a heterogeneous environment: Random dispersion vs. nonlocal dispersion","authors":"Salih Djilali , Yuming Chen , Shaofen Zou","doi":"10.1016/j.matcom.2025.03.032","DOIUrl":"10.1016/j.matcom.2025.03.032","url":null,"abstract":"<div><div>This research studies a spatiotemporal SIS epidemic model that incorporates both long-range and small-range mobilities to represent the two distinct diffusion strategies, local and nonlocal. The nonlocal dispersion operator is used to capture the long-range mobility of the susceptible, which can diffuse freely through the studied domain. The random diffusion is employed to account for the limitations imposed on the movement of the infected, which are allowed to disperse locally in the neighborhood of the original point. We also assume that the studied space is heterogeneous, which means that all parameters are assumed to be space-dependent. This poses significant challenges to the stability analysis for the steady states as well as the discussion on the existence of endemic steady states, and studying the asymptotic profiles of endemic steady states. The analysis is conducted in terms of the basic reproduction number, which serves as a threshold parameter. We also investigate the asymptotic profiles of endemic steady states when dispersal rates tend to zero or infinity. The findings have implications for disease modeling and control due to insights into the effects of different mechanisms of mobility on epidemic dynamics and provide useful information on the efficiency of mobility control in containing the epidemic.</div></div>","PeriodicalId":49856,"journal":{"name":"Mathematics and Computers in Simulation","volume":"236 ","pages":"Pages 90-110"},"PeriodicalIF":4.4,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143833595","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

Generalized replicator dynamics based on mean-field pairwise comparison dynamic

IF 4.4 2区数学

Mathematics and Computers in Simulation Pub Date : 2025-04-11 DOI: 10.1016/j.matcom.2025.04.010

Hidekazu Yoshioka

引用次数: 0

Optimization of a price break policy and advertisement effort based non-instantaneous deteriorating inventory problem with partial backlogged via metaheuristic algorithms

IF 4.4 2区数学

Mathematics and Computers in Simulation Pub Date : 2025-04-10 DOI: 10.1016/j.matcom.2025.04.007

Rajan Mondal , Amalesh Kumar Manna , Md Akhtar , Asoke Kumar Bhunia

{"title":"Optimization of a price break policy and advertisement effort based non-instantaneous deteriorating inventory problem with partial backlogged via metaheuristic algorithms","authors":"Rajan Mondal , Amalesh Kumar Manna , Md Akhtar , Asoke Kumar Bhunia","doi":"10.1016/j.matcom.2025.04.007","DOIUrl":"10.1016/j.matcom.2025.04.007","url":null,"abstract":"<div><div>Repeated advertisements of an item in different media, displayed stock in a decorated showroom, and also price break policies play a vital role in an inventory control system. Also, the relationship between products’ selling price and market demand is conflicting when all other factors are fixed. Thus, the incorporation of advertisement policy and price break facility in a business is more realistic. This work investigates an inventory problem for non-instantaneous deteriorating items with advertisement and displayed inventory level dependent demand under price break facility. Moreover, partially backlogged shortages and transportation cost for replenishing items are considered in the proposed inventory model. Based on the customer’s demand and storage space of the shop, several cases and sub-cases are considered. In this study, different metaheuristic algorithms are considered for maximizing the average profit in each scenario. Then, considering one numerical example, the proposed model is justified. Finally, the sensitivity analysis is carried out to investigate the impact of model parameters on the policy of optimality and a fruitful conclusion is drawn.</div></div>","PeriodicalId":49856,"journal":{"name":"Mathematics and Computers in Simulation","volume":"236 ","pages":"Pages 221-247"},"PeriodicalIF":4.4,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143851395","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

Efficient valuation of joint life variable annuities with guaranteed minimum death benefits

IF 4.4 2区数学

Mathematics and Computers in Simulation Pub Date : 2025-04-10 DOI: 10.1016/j.matcom.2025.04.001

Jiayi Xie , Zhimin Zhang , Zhenyu Cui

引用次数: 0