The European Physical Journal B最新文献_第2页

Opinion dynamics based on social learning theory

IF 1.6 4区物理与天体物理

The European Physical Journal B Pub Date : 2024-12-09 DOI: 10.1140/epjb/s10051-024-00838-6

Dong Jiang, Qionglin Dai, Haihong Li, Junzhong Yang

{"title":"Opinion dynamics based on social learning theory","authors":"Dong Jiang, Qionglin Dai, Haihong Li, Junzhong Yang","doi":"10.1140/epjb/s10051-024-00838-6","DOIUrl":"10.1140/epjb/s10051-024-00838-6","url":null,"abstract":"<p>In opinion dynamics, how individuals update their opinions has a profound impact on the final opinion distribution. Though extensive efforts have been made to explore opinion evolution rules, it still remains a challenging issue since opinions of individuals are usually shaped by complicated factors in the real world. In this paper, we introduce social learning theory (SLT) into opinion dynamics and study how the opinion evolution rule derived from SLT affects opinion evolution. Based on SLT, three factors are considered when individuals update their opinions, peer influence, role model influence and personal experience, and three parameters are introduced to regulate their weights of them. Numerical simulations on scale-free networks reveal that the opinion dynamics based on SLT could effectively promote consensus in a population. Especially, the role model influence from surroundings plays a significant role in the consensus of opinions. Whereas, consensus could not be realized through only the role model influence, and an appropriate combination with peer influence can facilitate consensus best. Meanwhile, we find that, holding personal experience to a certain extent is in favor of the final consensus, although it may extend the relaxation time. Besides, when the weight of personal experience is fixed, there exists an optimal weight combination of peer influence and role model influence that leads to the minimum relaxation time. These results may offer a new perspective on understanding the evolution of public opinions and the emergence of consensus.</p>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"97 12","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142790407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental verification of latticed acoustic metamaterials with pentamode to bandgap characteristics

IF 1.6 4区物理与天体物理

The European Physical Journal B Pub Date : 2024-12-08 DOI: 10.1140/epjb/s10051-024-00834-w

Feilong Gong, Qi Li, Zifei Xiao, Song Liu

{"title":"Experimental verification of latticed acoustic metamaterials with pentamode to bandgap characteristics","authors":"Feilong Gong, Qi Li, Zifei Xiao, Song Liu","doi":"10.1140/epjb/s10051-024-00834-w","DOIUrl":"10.1140/epjb/s10051-024-00834-w","url":null,"abstract":"<div><p>Pentamode and bandgap characteristics of metamaterials are of great significance to the control of elastic wave propagation by acoustic metamaterials. Pentamode metamaterials are artificially designed solid structures that exhibit fluid-like behavior. The bandgap characteristic of metamaterials effectively hinders the propagation of elastic waves. A latticed metamaterial with pentamode characteristics is proposed, achieving bandgap features by altering the positions of nodes between arms in the unit structures. This study aims to experimentally verify the pentamode and bandgap characteristics of acoustic metamaterials. Finite element analysis using COMSOL Multiphysics and underwater experiments with three models theoretically and experimentally validate the ability of latticed metamaterials to control elastic wave propagation under various parameters. By examining the band structure, the propagation of acoustic waves within the pentamode domain (10–20 kHz) for pentamode model and bandgap domain (5–10 kHz) for bandgap models are assessed. The experimental results agree with the theoretical simulations. The pentamode and bandgap characteristics of the latticed metamaterials have a broad development prospect in acoustic detection.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"97 12","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142789218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A method to identify partial phase transitions of bimetallic clusters through inequivalent sites from molecular dynamic simulations

IF 1.6 4区物理与天体物理

The European Physical Journal B Pub Date : 2024-12-07 DOI: 10.1140/epjb/s10051-024-00819-9

Alessio Palavicini, Diana E. Moreno, Abel García-Barrientos, César G. Galván

{"title":"A method to identify partial phase transitions of bimetallic clusters through inequivalent sites from molecular dynamic simulations","authors":"Alessio Palavicini, Diana E. Moreno, Abel García-Barrientos, César G. Galván","doi":"10.1140/epjb/s10051-024-00819-9","DOIUrl":"10.1140/epjb/s10051-024-00819-9","url":null,"abstract":"<p>The atomistic structure of clusters dictates their chemical activity, and its understanding is crucial when synthesizing and using them, particularly when working at often needed finite temperatures. The structural evolution becomes more intricate when the system contains more than one type of atom, such as in the case of bimetallic nanoparticles. We analyze the thermal evolution of the clusters through a simple approach, using molecular dynamics simulations to calculate the centrosymmetry parameter of each of the atoms. The atoms are then grouped into inequivalent sites according to the values of the parameter. This method allows us to map distinctive regions of the cluster structure and analytically track the structural evolution of individual sites and constituent regions in relation to the temperature in clusters with arbitrary spatial and chemical order. We show its application in Au-Cu nanoclusters, where we found partial melting temperatures and segregation temperatures for a range of morphologies and chemical compositions. This method reveals, through a simple calculation, the internal structure of nanoclusters at select temperatures as way of analyzing their behavior, facilitating their design and use on thermal applications.</p>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"97 12","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142789175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New coevolution dynamic as an optimization strategy in group problem solving

IF 1.6 4区物理与天体物理

The European Physical Journal B Pub Date : 2024-12-04 DOI: 10.1140/epjb/s10051-024-00828-8

Francis Ferreira Franco, Paulo Freitas Gomes

引用次数: 0

Photo-thermo-acoustic waves interaction for nanostructured rotational semiconductor material subjected to laser pulse

IF 1.6 4区物理与天体物理

The European Physical Journal B Pub Date : 2024-12-03 DOI: 10.1140/epjb/s10051-024-00830-0

Kh. Lotfy, Ibrahim S. Elshazly, Borhen Halouani, Praveen Ailawalia, Alaa A. El-Bary

{"title":"Photo-thermo-acoustic waves interaction for nanostructured rotational semiconductor material subjected to laser pulse","authors":"Kh. Lotfy, Ibrahim S. Elshazly, Borhen Halouani, Praveen Ailawalia, Alaa A. El-Bary","doi":"10.1140/epjb/s10051-024-00830-0","DOIUrl":"10.1140/epjb/s10051-024-00830-0","url":null,"abstract":"<div><p>This research investigates the influence of rotation on the propagation of optical acoustic waves caused by the motion of an optical carrier in an elastic thermal environment. The study employs theoretical analysis to derive governing equations tailored to a nonlocal semiconductor medium, incorporating the interaction between acoustic waves and thermomechanics. The foundational equations of the model, influenced by photothermal and thermoelastic principles, are mathematically derived when the microstructure of the medium is taken into consideration while accounting for rotation. The model explores the medium's response to a thermal ramp originating from light-induced temperature elevation. The mathematical model is solvable in two-dimensional (2D) using the normal mode method, and numerical solutions offer insights into various physical fields, such as displacements, temperature, acoustic pressure, mechanical distributions, and carrier density diffusion. Employing the harmonic wave method, some graphical representations of the rotation parameter are obtained, both with and without the influence of the nonlocal parameter. Theoretical analysis includes a comprehensive examination, comparison, and discussion of the effects of these parameters on the system subjected to ramp-type heating.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"97 12","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142761969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A micromagnetic research on nonequilibrium phase transitions of cobalt nanorings with varying ring widths

IF 1.6 4区物理与天体物理

The European Physical Journal B Pub Date : 2024-12-02 DOI: 10.1140/epjb/s10051-024-00831-z

Necda Çam

引用次数: 0

Nucleation transitions in polycontextural networks toward consensus

IF 1.6 4区物理与天体物理

The European Physical Journal B Pub Date : 2024-11-30 DOI: 10.1140/epjb/s10051-024-00826-w

Johannes Falk, Edwin Eichler, Katja Windt, Marc-Thorsten Hütt

{"title":"Nucleation transitions in polycontextural networks toward consensus","authors":"Johannes Falk, Edwin Eichler, Katja Windt, Marc-Thorsten Hütt","doi":"10.1140/epjb/s10051-024-00826-w","DOIUrl":"10.1140/epjb/s10051-024-00826-w","url":null,"abstract":"<p>Recently, we proposed polycontextural networks as a model of evolving systems of interacting beliefs. Here, we present an analysis of the phase transition as well as the scaling properties. The model contains interacting agents that strive for consensus, each with only subjective perception. Depending on a parameter that governs how responsive the agents are to changing their belief systems the model exhibits a phase transition that mediates between an active phase where the agents constantly change their beliefs and a frozen phase, where almost no changes appear. We observe the build-up of convention-aligned clusters only in the intermediate regime of diverging susceptibility. Here, we analyze in detail the behavior of polycontextural networks close to this transition. We provide an analytical estimate of the critical point and show that the scaling properties and the space–time structure of these clusters show self-similar behavior. Our results not only contribute to a better understanding of the emergence of consensus in systems of distributed beliefs but also show that polycontextural networks are models, motivated by social systems, where susceptibility—the sensitivity to change own beliefs—drives the growth of consensus clusters.</p>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"97 11","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjb/s10051-024-00826-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142753899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Static and microwave properties of amorphous magnets near saturation 接近饱和非晶磁体的静态和微波特性

IF 1.6 4区物理与天体物理

The European Physical Journal B Pub Date : 2024-11-28 DOI: 10.1140/epjb/s10051-024-00825-x

Eugene M. Chudnovsky, Dmitry A. Garanin

引用次数: 0

Anthracenyl chalcone: a promising anticancer agent—structural and molecular docking studies 蒽基查尔酮：一种有前途的抗癌剂--结构和分子对接研究

IF 1.6 4区物理与天体物理

The European Physical Journal B Pub Date : 2024-11-26 DOI: 10.1140/epjb/s10051-024-00822-0

Dian Alwani Zainuri, Nurfatin Najihah Nor Hashim, Nurul Syuhada Affandi, Nurfatiha Juliana Jamsari, Ibrahim Abdul Razak

{"title":"Anthracenyl chalcone: a promising anticancer agent—structural and molecular docking studies","authors":"Dian Alwani Zainuri, Nurfatin Najihah Nor Hashim, Nurul Syuhada Affandi, Nurfatiha Juliana Jamsari, Ibrahim Abdul Razak","doi":"10.1140/epjb/s10051-024-00822-0","DOIUrl":"10.1140/epjb/s10051-024-00822-0","url":null,"abstract":"<div><p>This study employed computational methods to investigate the potential anticancer activity of two anthracenyl chalcone derivatives: (<i>E</i>)-1-(anthracen-9-yl)-3-(4-dimethylamino)naphthalen-1-yl) prop-2-en-1-one (1) and (<i>E</i>)-1-(9-anthryl)-3-(2,6-dichlorophenyl)prop-2-en-1-one (2). Density Functional Theory (DFT) calculations with the B3LYP/6–311 + + G(d,p) basis set optimized the molecular structures. Hirshfeld surface analysis confirmed the presence of intermolecular interactions (C–H⋯O and C–H⋯π) within the crystal packing. Molecular docking simulations using Cavity-based Docking (CB-Dock) software revealed favorable binding within the active site of the target protein (PDB ID: 1M17). Compound 2 exhibited a slightly stronger binding affinity (− 10.1 kcal/mol) compared to compound 1 (− 9.2 kcal/mol), suggesting a tighter interaction. Both compounds interacted with crucial amino-acid residues (Leu 694, Phe 699, Val 702, Ala 719, Lys 721, Thr 766, Leu 768, Met 769, Pro 770, Gly 772, Cys 773, Arg 817, Asn 818, Leu 820, Thr 830, and Asp 831), including some previously identified as important for known anticancer agents targeting 1M17. These findings suggest the potential of these anthracenyl chalcone derivatives as novel anticancer agents.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"97 11","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjb/s10051-024-00822-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction: Thermodynamic properties of perovskite MgSiO3 with cubic structure under extreme conditions 更正：具有立方结构的过氧化镁在极端条件下的热力学性质

IF 1.6 4区物理与天体物理

The European Physical Journal B Pub Date : 2024-11-25 DOI: 10.1140/epjb/s10051-024-00823-z

Quang Hoc Nguyen, Nhi Quynh Ngo, Thi Mai Dao, Cong Vien Tran, Thi Thu Tra Lai, Thi Van Anh Le, Thi Thuy An Nguyen

引用次数: 0