IF 2.7 3区物理与天体物理

Entropy Pub Date : 2023-10-19 DOI: 10.3390/e25101464

Tomasz Starczewski

引用次数: 0

Variable-Length Resolvability for General Sources and Channels. 通用源和通道的可变长度分辨率。

IF 2.7 3区物理与天体物理

Entropy Pub Date : 2023-10-19 DOI: 10.3390/e25101466

Hideki Yagi, Te Sun Han

引用次数: 9

Novel Entropy-Based Phylogenetic Algorithm: A New Approach for Classifying SARS-CoV-2 Variants. 一种新的基于熵的系统发育算法：对严重急性呼吸系统综合征冠状病毒2型变异株进行分类的新方法。

IF 2.7 3区物理与天体物理

Entropy Pub Date : 2023-10-19 DOI: 10.3390/e25101463

Vladimir Perovic, Sanja Glisic, Milena Veljkovic, Slobodan Paessler, Veljko Veljkovic

{"title":"Novel Entropy-Based Phylogenetic Algorithm: A New Approach for Classifying SARS-CoV-2 Variants.","authors":"Vladimir Perovic, Sanja Glisic, Milena Veljkovic, Slobodan Paessler, Veljko Veljkovic","doi":"10.3390/e25101463","DOIUrl":"10.3390/e25101463","url":null,"abstract":"The SARS-CoV-2 virus, the causative agent of COVID-19, is known for its genetic diversity. Virus variants of concern (VOCs) as well as variants of interest (VOIs) are classified by the World Health Organization (WHO) according to their potential risk to global health. This study seeks to enhance the identification and classification of such variants by developing a novel bioinformatics criterion centered on the virus's spike protein (SP1), a key player in host cell entry, immune response, and a mutational hotspot. To achieve this, we pioneered a unique phylogenetic algorithm which calculates EIIP-entropy as a distance measure based on the distribution of the electron-ion interaction potential (EIIP) of amino acids in SP1. This method offers a comprehensive, scalable, and rapid approach to analyze large genomic data sets and predict the impact of specific mutations. This innovative approach provides a robust tool for classifying emergent SARS-CoV-2 variants into potential VOCs or VOIs. It could significantly augment surveillance efforts and understanding of variant characteristics, while also offering potential applicability to the analysis and classification of other emerging viral pathogens and enhancing global readiness against emerging and re-emerging viral pathogens.","PeriodicalId":11694,"journal":{"name":"Entropy","volume":"25 10","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10606860/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61561642","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

Feedback Control of Quantum Correlations in a Cavity Magnomechanical System with Magnon Squeezing. 具有磁non压缩的腔磁力学系统中量子关联的反馈控制。

IF 2.7 3区物理与天体物理

Entropy Pub Date : 2023-10-18 DOI: 10.3390/e25101462

Mohamed Amazioug, Shailendra Singh, Berihu Teklu, Muhammad Asjad

引用次数: 2

Quantum Honeypots. 量子蜜罐。

IF 2.7 3区物理与天体物理

Entropy Pub Date : 2023-10-18 DOI: 10.3390/e25101461

Naya Nagy, Marius Nagy, Ghadeer Alazman, Zahra Hawaidi, Saja Mustafa Alsulaibikh, Layla Alabbad, Sadeem Alfaleh, Areej Aljuaid

{"title":"Quantum Honeypots.","authors":"Naya Nagy, Marius Nagy, Ghadeer Alazman, Zahra Hawaidi, Saja Mustafa Alsulaibikh, Layla Alabbad, Sadeem Alfaleh, Areej Aljuaid","doi":"10.3390/e25101461","DOIUrl":"10.3390/e25101461","url":null,"abstract":"Quantum computation offers unique properties that cannot be paralleled by conventional computers. In particular, reading qubits may change their state and thus signal the presence of an intruder. This paper develops a proof-of-concept for a quantum honeypot that allows the detection of intruders on reading. The idea is to place quantum sentinels within all resources offered within the honeypot. Additional to classical honeypots, honeypots with quantum sentinels can trace the reading activity of the intruder within any resource. Sentinels can be set to be either visible and accessible to the intruder or hidden and unknown to intruders. Catching the intruder using quantum sentinels has a low theoretical probability per sentinel, but the probability can be increased arbitrarily higher by adding more sentinels. The main contributions of this paper are that the monitoring of the intruder can be carried out at the level of the information unit, such as the bit, and quantum monitoring activity is fully hidden from the intruder. Practical experiments, as performed in this research, show that the error rate of quantum computers has to be considerably reduced before implementations of this concept are feasible.","PeriodicalId":11694,"journal":{"name":"Entropy","volume":"25 10","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10606432/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61561657","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

Looking into the Market Behaviors through the Lens of Correlations and Eigenvalues: An Investigation on the Chinese and US Markets Using RMT. 从相关性和特征值视角看市场行为——基于RMT的中美市场调查。

IF 2.7 3区物理与天体物理

Entropy Pub Date : 2023-10-18 DOI: 10.3390/e25101460

Yong Tang, Jason Xiong, Zhitao Cheng, Yan Zhuang, Kunqi Li, Jingcong Xie, Yicheng Zhang

{"title":"Looking into the Market Behaviors through the Lens of Correlations and Eigenvalues: An Investigation on the Chinese and US Markets Using RMT.","authors":"Yong Tang, Jason Xiong, Zhitao Cheng, Yan Zhuang, Kunqi Li, Jingcong Xie, Yicheng Zhang","doi":"10.3390/e25101460","DOIUrl":"10.3390/e25101460","url":null,"abstract":"This research systematically analyzes the behaviors of correlations among stock prices and the eigenvalues for correlation matrices by utilizing random matrix theory (RMT) for Chinese and US stock markets. Results suggest that most eigenvalues of both markets fall within the predicted distribution intervals by RMT, whereas some larger eigenvalues fall beyond the noises and carry market information. The largest eigenvalue represents the market and is a good indicator for averaged correlations. Further, the average largest eigenvalue shows similar movement with the index for both markets. The analysis demonstrates the fraction of eigenvalues falling beyond the predicted interval, pinpointing major market switching points. It has identified that the average of eigenvector components corresponds to the largest eigenvalue switch with the market itself. The investigation on the second largest eigenvalue and its eigenvector suggests that the Chinese market is dominated by four industries whereas the US market contains three leading industries. The study later investigates how it changes before and after a market crash, revealing that the two markets behave differently, and a major market structure change is observed in the Chinese market but not in the US market. The results shed new light on mining hidden information from stock market data.","PeriodicalId":11694,"journal":{"name":"Entropy","volume":"25 10","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10606484/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61561632","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 Complex Dynamical Networks with Stochastic Links Dynamics. 具有随机链路的复杂动态网络的同步动力学。

IF 2.7 3区物理与天体物理

Entropy Pub Date : 2023-10-17 DOI: 10.3390/e25101457

Juanxia Zhao, Yinhe Wang, Peitao Gao, Shengping Li, Yi Peng

{"title":"Synchronization of Complex Dynamical Networks with Stochastic Links Dynamics.","authors":"Juanxia Zhao, Yinhe Wang, Peitao Gao, Shengping Li, Yi Peng","doi":"10.3390/e25101457","DOIUrl":"10.3390/e25101457","url":null,"abstract":"The mean square synchronization problem of the complex dynamical network (CDN) with the stochastic link dynamics is investigated. In contrast to previous literature, the CDN considered in this paper can be viewed as consisting of two subsystems coupled to each other. One subsystem consists of all nodes, referred to as the nodes subsystem, and the other consists of all links, referred to as the network topology subsystem, where the weighted values can quantitatively reflect changes in the network's topology. Based on the above understanding of CDN, two vector stochastic differential equations with Brownian motion are used to model the dynamic behaviors of nodes and links, respectively. The control strategy incorporates not only the controller in the nodes but also the coupling term in the links, through which the CDN is synchronized in the mean-square sense. Meanwhile, the dynamic stochastic signal is proposed in this paper, which is regarded as the auxiliary reference tracking target of links, such that the links can track the reference target asymptotically when synchronization occurs in nodes. This implies that the eventual topological structure of CDN is stochastic. Finally, a comparison simulation example confirms the superiority of the control strategy in this paper.","PeriodicalId":11694,"journal":{"name":"Entropy","volume":"25 10","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10606096/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61561672","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

Optimizing Finite-Blocklength Nested Linear Secrecy Codes: Using the Worst Code to Find the Best Code. 优化有限块长度嵌套线性保密代码：使用最差代码查找最佳代码。

IF 2.7 3区物理与天体物理

Entropy Pub Date : 2023-10-17 DOI: 10.3390/e25101456

Morteza Shoushtari, Willie Harrison

引用次数: 0

Recovering Power Grids Using Strategies Based on Network Metrics and Greedy Algorithms. 使用基于网络度量和贪婪算法的策略恢复电网。

IF 2.7 3区物理与天体物理

Entropy Pub Date : 2023-10-17 DOI: 10.3390/e25101455

Fenghua Wang, Hale Cetinay, Zhidong He, Le Liu, Piet Van Mieghem, Robert E Kooij

{"title":"Recovering Power Grids Using Strategies Based on Network Metrics and Greedy Algorithms.","authors":"Fenghua Wang, Hale Cetinay, Zhidong He, Le Liu, Piet Van Mieghem, Robert E Kooij","doi":"10.3390/e25101455","DOIUrl":"10.3390/e25101455","url":null,"abstract":"For this study, we investigated efficient strategies for the recovery of individual links in power grids governed by the direct current (DC) power flow model, under random link failures. Our primary objective was to explore the efficacy of recovering failed links based solely on topological network metrics. In total, we considered 13 recovery strategies, which encompassed 2 strategies based on link centrality values (link betweenness and link flow betweenness), 8 strategies based on the products of node centrality values at link endpoints (degree, eigenvector, weighted eigenvector, closeness, electrical closeness, weighted electrical closeness, zeta vector, and weighted zeta vector), and 2 heuristic strategies (greedy recovery and two-step greedy recovery), in addition to the random recovery strategy. To evaluate the performance of these proposed strategies, we conducted simulations on three distinct power systems: the IEEE 30, IEEE 39, and IEEE 118 systems. Our findings revealed several key insights: Firstly, there were notable variations in the performance of the recovery strategies based on topological network metrics across different power systems. Secondly, all such strategies exhibited inferior performance when compared to the heuristic recovery strategies. Thirdly, the two-step greedy recovery strategy consistently outperformed the others, with the greedy recovery strategy ranking second. Based on our results, we conclude that relying solely on a single metric for the development of a recovery strategy is insufficient when restoring power grids following link failures. By comparison, recovery strategies employing greedy algorithms prove to be more effective choices.","PeriodicalId":11694,"journal":{"name":"Entropy","volume":"25 10","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10606524/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61561660","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

Efficient Communications in V2V Networks with Two-Way Lanes Based on Random Linear Network Coding. 基于随机线性网络编码的双向通道V2V网络中的高效通信。

IF 2.7 3区物理与天体物理

Entropy Pub Date : 2023-10-17 DOI: 10.3390/e25101454

Yiqian Zhang, Tiantian Zhu, Congduan Li

引用次数: 0

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