Entropy最新文献_第10页

Information and Knowledge Diffusion Dynamics in Complex Networks with Independent Spreaders.

IF 2.1 3区物理与天体物理

Entropy Pub Date : 2025-02-24 DOI: 10.3390/e27030234

Yan Zhuang, Weihua Li, Yang Liu

{"title":"Information and Knowledge Diffusion Dynamics in Complex Networks with Independent Spreaders.","authors":"Yan Zhuang, Weihua Li, Yang Liu","doi":"10.3390/e27030234","DOIUrl":"10.3390/e27030234","url":null,"abstract":"Information and knowledge diffusion are important dynamical processes in complex social systems, in which the underlying topology of interactions among individuals is often modeled as networks. Recent studies have examined various information diffusion scenarios primarily focusing on the dynamics within one network; yet, relatively little scholarly attention has been paid to possible interactions among individuals beyond the focal network. Here, in this study, we account for this phenomenon by modeling the information diffusion dynamics with the involvement of independent spreaders in a susceptible-exposed-infectious-recovered contagion process. Independent spreaders receive information using latent information transmission pathways without following the links in the focal network and can spread the information to remote areas of the network not well connected to the major components. We derive the mathematics of the critical epidemic thresholds on homogeneous and heterogeneous networks as a function of the infectious rate, exposure rate, recovery rate and the activeness of independent spreaders. We present simulation results on Small World and Scale-Free complex networks, and real-world social networks of Facebook artists and physicist collaborations. The result shows that the extent to which information or knowledge can spread might be more extensive than we can explain in terms of link contagion only. In addition, these results also help to explain how the activeness of independent spreaders can affect the diffusion process of information and knowledge in complex networks, which may have implications for studies exploring other dynamical processes.","PeriodicalId":11694,"journal":{"name":"Entropy","volume":"27 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11940925/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143729378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

The Identification of Patterns in the Relation Between Biodiversity and Mutualistic Ecosystem Function Based on Network Resilience.

IF 2.1 3区物理与天体物理

Entropy Pub Date : 2025-02-24 DOI: 10.3390/e27030231

Changchun Lv, Ye Zhang, Yulin Lei, Ziwei Yuan, Dongli Duan

{"title":"The Identification of Patterns in the Relation Between Biodiversity and Mutualistic Ecosystem Function Based on Network Resilience.","authors":"Changchun Lv, Ye Zhang, Yulin Lei, Ziwei Yuan, Dongli Duan","doi":"10.3390/e27030231","DOIUrl":"10.3390/e27030231","url":null,"abstract":"Identifying the relation between biodiversity and mutualistic ecosystem function has been a longstanding concern. In this study, we present an interpretive model to evaluate the impact of each species on mutualistic ecosystem functions. By analyzing network resilience, we derive the average abundance and tipping point of the ecosystem to represent ecosystem functions. Based on the order of species collapse, each species is classified according to the F-core. The model quantitatively evaluates the influence of species on mutualistic ecosystem functions in scenarios where species are removed from ecosystems. We propose a criterion for identifying redundant species: a species is considered redundant if its removal negatively impacts average abundance without affecting the tipping point. To validate the model, we introduce twenty-four mutualistic ecosystems. Our numerical simulations and analytical analyses reveal two distinct patterns: one indicating the presence of redundancy and the other suggesting that each species is essential. Additionally, in mutualistic ecosystems characterized by redundancy, specialist species are more likely to be identified as redundant.","PeriodicalId":11694,"journal":{"name":"Entropy","volume":"27 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11941148/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143729419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Synchronization of Kuromoto Oscillators on Simplicial Complexes: Hysteresis, Cluster Formation and Partial Synchronization.

IF 2.1 3区物理与天体物理

Entropy Pub Date : 2025-02-24 DOI: 10.3390/e27030233

Samir Sahoo, Neelima Gupte

引用次数: 0

A Beam Search Framework for Quantum Circuit Mapping.

IF 2.1 3区物理与天体物理

Entropy Pub Date : 2025-02-24 DOI: 10.3390/e27030232

Cheng Qiu, Pengcheng Zhu, Lihua Wei

{"title":"A Beam Search Framework for Quantum Circuit Mapping.","authors":"Cheng Qiu, Pengcheng Zhu, Lihua Wei","doi":"10.3390/e27030232","DOIUrl":"10.3390/e27030232","url":null,"abstract":"In the era of noisy intermediate-scale quantum (NISQ) computing, the limited connectivity between qubits is one of the common physical limitations faced by current quantum computing devices. Quantum circuit mapping methods transform quantum circuits into equivalent circuits that satisfy physical connectivity constraints by remapping logical qubits, making them executable. The optimization problem of quantum circuit mapping has NP-hard computational complexity, and existing heuristic mapping algorithms still have significant potential for optimization in terms of the number of quantum gates generated. To reduce the number of SWAP gates inserted during mapping, the solution space of the mapping problem is represented as a tree structure, and the mapping process is equivalent to traversing this tree structure. To effectively and efficiently complete the search process, a beam search framework (BSF) is proposed for solving quantum circuit mapping. By iteratively selecting, expanding, and making decisions, high-quality target circuits are generated. Experimental results show that this method can significantly reduce the number of inserted SWAP gates on medium to large circuits, achieving an average reduction of 44% compared to baseline methods, and is applicable to circuits of various sizes and complexities.","PeriodicalId":11694,"journal":{"name":"Entropy","volume":"27 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11941456/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143729474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Evaluating Methods for Detrending Time Series Using Ordinal Patterns, with an Application to Air Transport Delays.

IF 2.1 3区物理与天体物理

Entropy Pub Date : 2025-02-23 DOI: 10.3390/e27030230

Felipe Olivares, F Javier Marín-Rodríguez, Kishor Acharya, Massimiliano Zanin

引用次数: 0

Adsorption Kinetics Model of Hydrogen on Graphite.

IF 2.1 3区物理与天体物理

Entropy Pub Date : 2025-02-23 DOI: 10.3390/e27030229

Jean-Marc Simon, Guilherme Carneiro Queiroz da Silva

引用次数: 0

An Open Quantum System Interacting with an Interference Engineering Environment.

IF 2.1 3区物理与天体物理

Entropy Pub Date : 2025-02-23 DOI: 10.3390/e27030228

He Wang, Jin Wang

{"title":"An Open Quantum System Interacting with an Interference Engineering Environment.","authors":"He Wang, Jin Wang","doi":"10.3390/e27030228","DOIUrl":"10.3390/e27030228","url":null,"abstract":"In this paper, we investigate the interference engineering of the open quantum system, where the environment is made indefinite either through the use of an interferometer or the introduction of auxiliary qubits. The environments are modeled by fully connected qubit baths with exact analytical dynamics. As the system passes through the interferometer or is controlled by auxiliary qubits, it is propagated along different paths or their superpositions, leading to distinct interactions with the environment in each path. This results in the superposition of the environments, which can be detected through specific measurements that retain certain coherent information about the paths. Our results demonstrate that the indefiniteness of the environment can significantly enhance the quantum correlations. However, only the statistical mixture of the influences from the environments is preserve provided that the path coherence is destructed. We also examine the serviceability of the indefiniteness as a resource for teleportation and quantum parameter estimation. Additionally, we discuss how to quantify the indefiniteness and the ways in which it affects the system's dynamics from the perspective of wave-particle-entanglement-ignorance complementarity. Our study highlights the potential benefits of an indefinite environment in quantum information processing and sheds light on the fundamental principles underlying its effects.","PeriodicalId":11694,"journal":{"name":"Entropy","volume":"27 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11941114/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143729268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Application of the Hill-Wheeler Formula in Statistical Models of Nuclear Fission: A Statistical-Mechanical Approach Based on Similarities with Semiconductor Physics.

IF 2.1 3区物理与天体物理

Entropy Pub Date : 2025-02-22 DOI: 10.3390/e27030227

Hirokazu Maruyama

引用次数: 0

Dynamic Evolution of EEG Complexity in Schizophrenia Across Cognitive Tasks.

IF 2.1 3区物理与天体物理

Entropy Pub Date : 2025-02-22 DOI: 10.3390/e27030226

Rosa Molina, Yasmina Crespo-Cobo, Francisco J Esteban, Ana Victoria Arias, Javier Rodríguez-Árbol, Maria Felipa Soriano, Antonio J Ibáñez-Molina, Sergio Iglesias-Parro

{"title":"Dynamic Evolution of EEG Complexity in Schizophrenia Across Cognitive Tasks.","authors":"Rosa Molina, Yasmina Crespo-Cobo, Francisco J Esteban, Ana Victoria Arias, Javier Rodríguez-Árbol, Maria Felipa Soriano, Antonio J Ibáñez-Molina, Sergio Iglesias-Parro","doi":"10.3390/e27030226","DOIUrl":"10.3390/e27030226","url":null,"abstract":"Schizophrenia is characterized by widespread disruptions in neural connectivity and dynamic modulation. Traditional EEG analyses often rely on static or averaged measures, which may overlook the temporal evolution of neural complexity across cognitive demands. This study employed Higuchi Fractal Dimension, a non-linear measure of signal complexity, to examine the temporal dynamics of EEG activity across five cortical regions (central, frontal, occipital, parietal, and temporal lobes) during an attentional and a memory-based task in individuals diagnosed with schizophrenia and healthy controls. A permutation-based topographic analysis of variance revealed significant differences in neural complexity between tasks and groups. In the control group, results showed a consistent pattern of higher neural complexity during the attentional task across the different brain regions (except during a few moments in the temporal and occipital regions). This pattern of differentiation in complexity between the attentional and memory tasks reflects healthy individuals' ability to dynamically modulate neural activity based on task-specific requirements. In contrast, the group of patients with schizophrenia exhibited inconsistent patterns of differences in complexity between tasks over time across all neural regions. That is, differences in complexity between tasks varies across time intervals, being sometimes higher in the attentional task and other times higher in the memory task (especially in the central, frontal, and temporal regions). This inconsistent pattern in patients can explain reduced task-specific modulation of EEG complexity in schizophrenia, and suggests a disruption in the modulation of neural activity on function of task demands. These findings underscore the importance of analyzing the temporal dynamics of EEG complexity to capture task-specific neural modulation.","PeriodicalId":11694,"journal":{"name":"Entropy","volume":"27 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11941378/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143729347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Sensing-Assisted Secure Communications over Correlated Rayleigh Fading Channels.

IF 2.1 3区物理与天体物理

Entropy Pub Date : 2025-02-21 DOI: 10.3390/e27030225

Martin Mittelbach, Rafael F Schaefer, Matthieu Bloch, Aylin Yener, Onur Günlü

{"title":"Sensing-Assisted Secure Communications over Correlated Rayleigh Fading Channels.","authors":"Martin Mittelbach, Rafael F Schaefer, Matthieu Bloch, Aylin Yener, Onur Günlü","doi":"10.3390/e27030225","DOIUrl":"10.3390/e27030225","url":null,"abstract":"We consider a secure integrated sensing and communication (ISAC) scenario, where a signal is transmitted through a state-dependent wiretap channel with one legitimate receiver with which the transmitter communicates and one honest-but-curious target that the transmitter wants to sense. The secure ISAC channel is modeled as two state-dependent fast-fading channels with correlated Rayleigh fading coefficients and independent additive Gaussian noise components. Delayed channel outputs are fed back to the transmitter to improve the communication performance and to estimate the channel state sequence. We establish and illustrate an achievable secrecy-distortion region for degraded secure ISAC channels under correlated Rayleigh fading, for which we show that the signal-to-interference-plus-noise is not a sufficient statistic. We also evaluate the inner bound for a large set of parameters to derive practical design insights. The presented results include parameter ranges for which the secrecy capacity of a classical wiretap channel setup is surpassed and for which the channel capacity is approached. Thus, we illustrate for correlated Rayleigh fading cases that our secure ISAC methods can (i) eliminate the need for the legitimate receiver to have a statistical advantage over the eavesdropper and (ii) provide communication security with minimal rate penalty.","PeriodicalId":11694,"journal":{"name":"Entropy","volume":"27 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11941657/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143729365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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