Suggested Topics within your search.
Showing 301 - 320 results of 1,258 for search '"entropy"', query time: 0.09s Refine Results
  1. 301

    A Fault Feature Extraction Method for Rolling Bearing Based on Intrinsic Time-Scale Decomposition and AR Minimum Entropy Deconvolution by Jiakai Ding, Liangpei Huang, Dongming Xiao, Lingli Jiang

    Published 2021-01-01
    “…Firstly, the original early weak fault vibration signal of the rolling bearing is decomposed by the ITD algorithm to proper rotations (PRs) with fault feature frequency. Then, the sample entropy value of each PR is calculated to find the largest PRs of the sample entropy. …”
    Get full text
    Article
  2. 302

    The Measurement of Green Finance Development Index and Its Poverty Reduction Effect: Dynamic Panel Analysis Based on Improved Entropy Method by Lili Jiang, Hui Wang, Aihua Tong, Zhifei Hu, Hongjun Duan, Xiaolei Zhang, Yifeng Wang

    Published 2020-01-01
    “…Based on the analysis of related theories about green finance and poverty alleviation, this paper selects 18 indicators from three dimensions of economic development, financial development, and social environmental development and uses the improved entropy method to measure the green finance development index of China’s 25 provinces and municipalities from 2004 to 2017. …”
    Get full text
    Article
  3. 303

    Wavelet Correlation Feature Scale Entropy and Fuzzy Support Vector Machine Approach for Aeroengine Whole-Body Vibration Fault Diagnosis by Cheng-Wei Fei, Guang-Chen Bai

    Published 2013-01-01
    “…In order to correctly analyze aeroengine whole-body vibration signals, Wavelet Correlation Feature Scale Entropy (WCFSE) and Fuzzy Support Vector Machine (FSVM) (WCFSE-FSVM) method was proposed by fusing the advantages of the WCFSE method and the FSVM method. …”
    Get full text
    Article
  4. 304
  5. 305
  6. 306
  7. 307
  8. 308

    Information Flow between Global Equities and Cryptocurrencies: A VMD-Based Entropy Evaluating Shocks from COVID-19 Pandemic by Emmanuel Asafo-Adjei, Peterson Owusu Junior, Anokye M. Adam

    Published 2021-01-01
    “…Hence, we employ both the variational mode decomposition (VMD) and the Rényi effective transfer entropy techniques. Analyses of the study are presented for three sample periods; these are the full sample period, the pre-COVID-19 period, and the COVID-19 pandemic period. …”
    Get full text
    Article
  9. 309

    Assessing Wildfire Risk in South Korea Under Climate Change Using the Maximum Entropy Model and Shared Socioeconomic Pathway Scenarios by Jukyeong Choi, Heemun Chae

    Published 2024-12-01
    “…This study analyzed the probability of wildfire occurrence in South Korea using the Maximum Entropy (MaxEnt) model and predicted future wildfire occurrence under shared socioeconomic pathway (SSP) climate change scenarios. …”
    Get full text
    Article
  10. 310
  11. 311
  12. 312

    A New Health Condition Detection Method for Planetary Gears Based on Modified Distributed Compressed Sensing and Multiscale Symbol Dynamic Entropy by Zhe Wu, Qiang Zhang, Zeyu Ma, Jialong Lu, Zhiying Qin

    Published 2021-01-01
    “…Aiming at the problem of how to extract fault information from vibration signals of nonlinear and nonstationary planetary gearboxes, a performance degradation evaluation index of planetary gearboxes based on improved distributed compressed sensing and modified multiscale symbolic dynamic entropy (DCSMDE) is proposed. DCSMDE combines distributed compression sensing with modified multiscale symbol dynamic entropy and solves the problem of strong nonlinearity and strong vibration signal coupling of the planetary transmission system from the homologous signals of multiple sensors. …”
    Get full text
    Article
  13. 313
  14. 314
  15. 315

    Effects of Mn addition on wear and corrosion resistances of AlCoCrFeNi high-entropy alloy coating sprayed by HVOF by Dandan Zhang, Qiang Li, Chuntao Chang, Guan Zhang, Xu Ma, Rongze Sun

    Published 2025-01-01
    “…In this study, AlCoCrFeNi and AlCoCrFeNiMn0.5 high-entropy alloy coatings, denoted as the Mn0 and Mn0.5 coatings, respectively, were prepared on 304 stainless steel substrate via High velocity oxygen fuel (HVOF) and their wear and corrosion resistances were investigated. …”
    Get full text
    Article
  16. 316
  17. 317
  18. 318

    High-entropy engineered BaTiO3-based ceramic capacitors with greatly enhanced high-temperature energy storage performance by Xi Kong, Letao Yang, Fanqi Meng, Tao Zhang, Hejin Zhang, Yuan-Hua Lin, Houbing Huang, Shujun Zhang, Jinming Guo, Ce-Wen Nan

    Published 2025-01-01
    “…This study provides a good paradigm of the efficacy of the high-entropy engineering for developing high-performance dielectric capacitors.…”
    Get full text
    Article
  19. 319

    Deteksi Dini Gangguan Jaringan Distributed Denial Of Service (DDOS) Menggunakan Metode Shannon Entropy Pada Software Defined Network (SDN) by Achmad Solichin, Ludi Nugroho

    Published 2024-07-01
    “…Deteksi dini yang disebabkan oleh DDoS pada jaringan SDN dilakukan melalui pendekatan metrik entropy berbasis teori informasi. Penelitian ini memfokuskan pendeteksian dini pada serangan DDoS di dalam lingkungan SDN melalui metode Shannon Entropy dengan mendeteksi lalu lintas atau trafik normal dan DDoS. …”
    Get full text
    Article
  20. 320

    Evaluation of the Water Yield of Coal Roof Aquifers Based on the FDAHP-Entropy Method: A Case Study in the Donghuantuo Coal Mine, China by Yaowen Zhang, Lili Zhang, Haijun Li, Baoming Chi

    Published 2021-01-01
    “…Further, the fuzzy Delphi analytic hierarchy process (FDAHP) and entropy weight method (EWM) are used to calculate the subjective and objective weights of each main factor, respectively, and a combination weight model (CWM) is proposed based on the least square method to compose the comprehensive weights. …”
    Get full text
    Article