云南高校图书馆联盟文献共享服务平台- KURTOSIS

KURTOSIS: 作品数：100被引量：300H指数：10; 导出分析报告; 相关领域：医药卫生更多>>; 相关作者：游荣义陈忠丁彦春唐先广郑华文更多>>; 相关机构：浙江大学厦门大学集美大学昆明理工大学更多>>; 相关期刊：更多>>; 相关基金：国家自然科学基金中国博士后科学基金国家高技术研究发展计划福建省自然科学基金更多>>

Time-varying spillovers in high-order moments among cryptocurrencies: 《Financial Innovation》2024年第1期2070-2108,共39页Asil Azimli; This study uses high-frequency(1-min)price data to examine the connectedness among the leading cryptocurrencies(i.e.Bitcoin,Ethereum,Binance,Cardano,Litecoin,and Ripple)at volatility and high-order(third and fourth or...; 关键词：SPILLOVERS High-order moments SKEWNESS KURTOSIS Cryptocurrencies

Rolling bearing fault diagnosis based on data-level and feature-level information fusion: 《Journal of Southeast University(English Edition)》2024年第4期396-402,共7页Shu Yongdong Ma Tianchi Lin Yonggang; The National Natural Science Foundation of China(No.U22A20178);National Key Research and Development Program of China(No.2022YFB3404800);Jiangsu Province Science and Technology Achievement Transformation Special Fund Program(No.BA2023019).; To address the limitation of single acceleration sensor signals in effectively reflecting the health status of rolling bearings,a rolling bearing fault diagnosis method based on the fusion of data-level and feature-le...; 关键词：fault diagnosis information fusion correlation kurtosis feature-fusion convolutional neural network

Diagnosis of incipient faults in wind turbine bearings based on ICEEMDAN-IMCKD: 《International Journal of Mechanical System Dynamics》2024年第4期472-486,共15页Yanjun Li Ding Han; Inner Mongolia Autonomous Region Science and Technology Major Special Project,Grant/Award Number:2021ZD0019-4。; To address the difficulty in extracting early fault feature signals of rolling bearings,this paper proposes a novel weak fault diagnosis method for rolling bearings.This method combines the Improved Complementary Ense...; 关键词：rolling bearings early fault intrinsic mode functions Improved Complementary Ensemble Empirical Mode Decomposition Improved Maximum Correlated Kurtosis Deconvolution

Adjustments for Kurtosis and Continuity on the Prentice Test: 《Advances in Pure Mathematics》2024年第2期101-117,共17页Lily Gebhart John Kolassa; The test of Prentice [1] is a non-parametric statistical test for the two-way analysis of variance using ranks. The null distribution of this test typically is approximated using the Chi-square distribution. However, ...; 关键词：Friedman Test Prentice Test Edgeworth Approximation

Robust adaptive radar beamforming based on iterative training sample selection using kurtosis of generalized inner product statistics: 《Journal of Systems Engineering and Electronics》2024年第1期24-30,共7页TIAN Jing ZHANG Wei; supported by the National Natural Science Foundation of China(62371049)。; In engineering application,there is only one adaptive weights estimated by most of traditional early warning radars for adaptive interference suppression in a pulse reputation interval(PRI).Therefore,if the training s...; 关键词：adaptive radar beamforming training sample selection non-homogeneous detector electronic jamming jamming suppression

R-Factor Analysis of Data Based on Population Models Comprising R- and Q-Factors Leads to Biased Loading Estimates: 《Open Journal of Statistics》2024年第1期38-54,共17页André Beauducel; Effects of performing an R-factor analysis of observed variables based on population models comprising R- and Q-factors were investigated. Although R-factor analysis of data based on a population model comprising R- a...; 关键词：R-Factor Analysis Q-Factor Analysis Loading Bias Model Error Multivariate Kurtosis

Grain size distribution of modern beach sediments in Sri Lanka: 《Anthropocene Coasts》2023年第1期117-125,共9页U.L.H.P.Perera Amila Sandaruwan Ratnayake W.A.D.B.Weerasingha H.C.S.Subasinghe T.D.U.Wijewardhana; financial assistance for this study by an Accelerating Higher Education Expansion and Development(AHEAD)Development Oriented Research(DOR)grant funded by the World Bank.; Grain size distributions are widely used to describe sedimentary geochemistry,depositional environment,and sedi-ment transportation.The objective of this study is to analyze grain size distributions of modern sandy be...; 关键词：Sediment grain size SKEWNESS KURTOSIS Coastal erosion Beach nourishment

Multifractal estimation of NMR T_(2) cut-off value in low-permeability rocks considering spectrum kurtosis: SMOTE-based oversampling integrated with machine learning被引量：1: 《Petroleum Science》2023年第6期3411-3427,共17页Xiao-Jun Chen Rui-Xue Zhang Xiao-Bo Zhao Jun-Wei Yang Zhang-Jian Lan Cheng-Fei Luo Jian-Chao Cai; supported by National Natural Science Foundation of China(Nos.42002171,42172159);China Postdoctoral Science Foundation(Nos.2020TQ0299,2020M682520);Postdoctoral Innovation Science Foundation of Hubei Province of China.; The transverse relaxation time (T_(2)) cut-off value plays a crucial role in nuclear magnetic resonance for identifying movable and immovable boundaries, evaluating permeability, and determining fluid saturation in pe...; 关键词：Nuclear magnetic resonance Low-permeability porous media T_(2)cut-off value Fractal and multifractal Data augmentation Machine learning

Speckle Noise Suppression in Ultrasound Images Using Modular Neural Networks: 《Intelligent Automation & Soft Computing》2023年第2期1753-1765,共13页G.Karthiha Dr.S.Allwin; In spite of the advancement in computerized imaging,many image modalities produce images with commotion inﬂuencing both the visual quality and upsetting quantitative image analysis.In this way,the research in the zone...; 关键词：Speckle noise bilateralﬁlter ultra-sound image MNN KURTOSIS

Morphologic evolution of bifurcated reaches in a macrotidal estuary with mountain streams: 《International Journal of Sediment Research》2022年第6期857-870,共14页Jing Liu Yongjun Lu Liqin Zuo Huaixiang Liu Qun Xu Qingzhi Hou; The current study was financially supported by the National Natural Science Foundation of China(NSFC,Grant Nos.52071221 and U2040219)。; A macrotidal estuary with mountain streams(MEMS)is characterized by rapidly rising and falling flood peaks and large tidal ranges and is a typical estuary type with strong flow dynamics that is found worldwide.Underst...; 关键词：Mountain stream Macrotide Kurtosis index of river flooding Tide asymmetry Morphological evolution Bifurcated reach

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