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Fluctuation and Noise Letters最新文献

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Analysis of EEG Fluctuation Patterns using Non-Linear Phase Based Functional Connectivity Measures for Emotion Recognition 利用基于非线性相位的功能连接度量分析脑电图波动模式以进行情绪识别
IF 1.8 4区 工程技术 Q1 Mathematics
Fluctuation and Noise Letters
Pub Date : 2024-04-24 DOI: 10.1142/s0219477524500512
Himanshu Kumar, Nagarajan Ganapathy, Subha D. Puthankattil, Ramakrishnan Swaminathan
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引用次数: 0
Multifractal analysis of international energy and agricultural markets under the influence of Russia-Ukraine conflict 俄罗斯-乌克兰冲突影响下的国际能源和农产品市场多分形分析
IF 1.8 4区 工程技术 Q1 Mathematics
Fluctuation and Noise Letters
Pub Date : 2024-04-19 DOI: 10.1142/s0219477524500342
Jing-Wen Wei, Hong-Yong Wang, Guang-Xi Cao
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引用次数: 0
An Information Theoretic Approach to Analyze Irregularity of Graph Signals and Network Topological Changes Based on Bubble Entropy 基于气泡熵分析图信号不规则性和网络拓扑变化的信息论方法
IF 1.8 4区 工程技术 Q1 Mathematics
Fluctuation and Noise Letters
Pub Date : 2024-04-19 DOI: 10.1142/s0219477524500524
Keqiang Dong, Dan Li
{"title":"An Information Theoretic Approach to Analyze Irregularity of Graph Signals and Network Topological Changes Based on Bubble Entropy","authors":"Keqiang Dong, Dan Li","doi":"10.1142/s0219477524500524","DOIUrl":"https://doi.org/10.1142/s0219477524500524","url":null,"abstract":"","PeriodicalId":55155,"journal":{"name":"Fluctuation and Noise Letters","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140683319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sequential Monte Carlo with adaptive lookahead support for improved importance sampling 具有自适应前瞻支持的序列蒙特卡罗，用于改进重要性采样
IF 1.8 4区 工程技术 Q1 Mathematics
Fluctuation and Noise Letters
Pub Date : 2024-04-19 DOI: 10.1142/s0219477524500500
P. Choppala
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引用次数: 0
The multifractal phenomenon of stock price caused by "Tesla rights defense event" "特斯拉维权事件 "引发的股价多分形现象
IF 1.8 4区 工程技术 Q1 Mathematics
Fluctuation and Noise Letters
Pub Date : 2024-04-04 DOI: 10.1142/s0219477524500482
Jian Wang, Heming Xu, Shanshan Ge, Wenjing Jiang, Yan Yan, Wei Shao
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引用次数: 0
Kirchhoff's Law of Thermal Radiation Has Not Been Violated 没有违反基尔霍夫热辐射定律
IF 1.8 4区 工程技术 Q1 Mathematics
Fluctuation and Noise Letters
Pub Date : 2024-04-04 DOI: 10.1142/s0219477524310023
Alexander P. Kirk
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引用次数: 0
Non-invasive deep-brain stimulations by spatio-temporal fourier synthesis 通过时空傅立叶合成技术实现无创深层脑刺激
IF 1.8 4区 工程技术 Q1 Mathematics
Fluctuation and Noise Letters
Pub Date : 2024-04-02 DOI: 10.1142/s0219477524500494
Laszlo B. Kish, Andrea Antal
A new type of non-invasive deep-brain stimulation is conceived and demonstrated by computer simulations. The process is based on spatio-temporal Fourier synthesis using multiple electrode pairs with sinusoidal current drive to limit skin sensations and concentrate the stimulus power to a small spatial volume and into large rare spikes in the times domain, while the signal power at the skin is steady and small. Exotic time signals are also shown, such as the cases of high-frequency prime harmonics, quasi-random and chirping stimulations. The first one is able to generate sharp spikes with low frequency while its carriers are high-frequency harmonics that easily conducts via the skin and brain tissue. Open questions are, among others, the best shapes and timing of spikes. The answers require experimental tests and explorations in animal models and human subjects.
通过计算机模拟，构想并演示了一种新型非侵入式深脑刺激。该过程基于时空傅立叶合成，使用多电极对和正弦电流驱动来限制皮肤感觉，并将刺激功率集中到较小的空间体积和时域中的大型罕见尖峰，而皮肤上的信号功率稳定且较小。此外，还显示了奇异的时间信号，如高频素谐波、准随机和啁啾刺激。前者能产生低频尖峰，而其载体是高频谐波，很容易通过皮肤和脑组织传导。尚未解决的问题包括尖峰的最佳形状和时间。答案需要在动物模型和人体中进行实验测试和探索。
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引用次数: 0
Exploring the Cross-Correlations between Tesla Stock Price, New Energy Vehicles and Oil Prices: A Multifractal and Causality Analysis 探索特斯拉股价、新能源汽车和石油价格之间的交叉相关性：多分形和因果关系分析
IF 1.8 4区 工程技术 Q1 Mathematics
Fluctuation and Noise Letters
Pub Date : 2024-03-20 DOI: 10.1142/s021947752450024x
Xingyue Gong, Guo-Zhu Jia

The interaction between new energy vehicle (NEV) stock prices and the crude oil market is crucial for resource allocation and risk management. This study employs Multifractal detrended cross-correlation analysis (MF-DCCA) to investigate the multifractal characteristics of the cross-correlation between Tesla stock price (TSLA) and crude oil price (Brent), as well as between TSLA and other NEV stocks (excluding TSLA). The experimental results reveal long-term persistence and multiple fractal characteristics in the cross-correlations. Additionally, multifractal asymmetric detrended cross-correlation analysis (MF-ADCCA) demonstrates the asymmetry of the cross-correlation during upward or downward trends between TSLA and Brent, as well as between TSLA and other NEV stocks (excluding TSLA). Furthermore, utilizing the transfer entropy (TE) method, we assess the strength and direction of information flows between TSLA and Brent, and between TSLA and other NEV stocks (excluding TSLA). Interestingly, we observe bidirectional information transmission between TSLA and other NEV stocks, while only unidirectional information transmission from NIO to TSLA is evident. These findings provide valuable insights for resource allocation, supply chain management and sustainable development strategies for decision-makers in the NEV market.

新能源汽车（NEV）股票价格与原油市场之间的相互作用对于资源配置和风险管理至关重要。本研究采用多分形去趋势交叉相关分析法（MF-DCCA）研究特斯拉股票价格（TSLA）与原油价格（布伦特）之间以及特斯拉与其他新能源汽车股票（不包括特斯拉）之间交叉相关的多分形特征。实验结果揭示了交叉相关性的长期持续性和多重分形特征。此外，多分形非对称去趋势交叉相关分析（MF-ADCCA）显示了 TSLA 和布伦特以及 TSLA 和其他 NEV 股票（不包括 TSLA）之间在上升或下降趋势中交叉相关的非对称性。此外，我们还利用转移熵 (TE) 方法评估了 TSLA 和布伦特之间以及 TSLA 和其他 NEV 股票（不包括 TSLA）之间的信息流强度和方向。有趣的是，我们观察到 TSLA 与其他 NEV 股票之间存在双向信息传递，而从 NIO 到 TSLA 之间只有明显的单向信息传递。这些发现为新能源汽车市场决策者的资源分配、供应链管理和可持续发展战略提供了宝贵的启示。
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引用次数: 0
Comparative Performance Analysis of Filtering Methods for Removing Baseline Wander Noise from an ECG Signal 去除心电信号基线漫游噪声的滤波方法性能比较分析
IF 1.8 4区 工程技术 Q1 Mathematics
Fluctuation and Noise Letters
Pub Date : 2024-03-15 DOI: 10.1142/s0219477524500469
Selma Ozaydin, Imteyaz Ahmad
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引用次数: 0
Smart Grids Secured By Dynamic Watermarking: How Secure? 通过动态水印确保智能电网安全：有多安全？
IF 1.8 4区 工程技术 Q1 Mathematics
Fluctuation and Noise Letters
Pub Date : 2024-03-15 DOI: 10.1142/s0219477524500433
Kate Davis, Laszlo B. Kish, Chanan Singh
{"title":"Smart Grids Secured By Dynamic Watermarking: How Secure?","authors":"Kate Davis, Laszlo B. Kish, Chanan Singh","doi":"10.1142/s0219477524500433","DOIUrl":"https://doi.org/10.1142/s0219477524500433","url":null,"abstract":"","PeriodicalId":55155,"journal":{"name":"Fluctuation and Noise Letters","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140240199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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