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GEOMETRICAL: 作品数：276被引量：405H指数：10; 导出分析报告; 相关领域：理学更多>>; 相关作者：张琳娜赵凤霞郑玉花郑鹏王铭更多>>; 相关机构：郑州大学中国船舶重工集团公司上海大学东北师范大学更多>>; 相关期刊：更多>>; 相关基金：国家自然科学基金国家重点基础研究发展计划河南省科技攻关计划国家教育部博士点基金更多>>

kProtoClust:Towards Adaptive k-Prototype Clustering without Known k: 《Computers, Materials & Continua》2025年第3期4949-4976,共28页Yuan Ping Huina Li Chun Guo Bin Hao; supported by the National Natural Science Foundation of China under Grant No.62162009;the Key Technologies R&D Program of He’nan Province under Grant No.242102211065;the Scientific Research Innovation Team of Xuchang University under GrantNo.2022CXTD003;Postgraduate Education Reform and Quality Improvement Project of Henan Province under Grant No.YJS2024JD38.; Towards optimal k-prototype discovery,k-means-like algorithms give us inspirations of central samples collection,yet the unstable seed samples selection,the hypothesis of a circle-like pattern,and the unknown K are st...; 关键词：Prototype finding convex hull support vector data description geometrical information

Performance Analysis of Curved Track G2T-FSO(Ground-to-Train Free Space Optical)Model under Various Weather Conditions: 《Computer Modeling in Engineering & Sciences》2024年第12期2087-2105,共19页Mohammed A.Alhartomi Mohammad F.L.Abdullah Wafi A.B.Mabrouk Mohammed S.M.Gismalla Ahmed Alzahmi Saeed Alzahrani Mohammad R.Altimania Mohammed S.Alsawat; funded by the Deputyship for Research&Innovation,Ministry of Education in Saudi Arabia,grant number S-1443-0223.; The demand for broadband data services on high-speed trains is rapidly growing as more people commute between their homes and workplaces.However,current radio frequency(RF)technology cannot adequately meet this demand...; 关键词：Free space optics curve track ground-to-train communications geometrical loss weather conditions

A Study on Multivariable Interactions Concerning Radar Cross Section Reduction through Geometric Attributes: 《Journal of Applied Mathematics and Physics》2024年第7期2582-2593,共12页Evan Sharp; This resolution 5 (25−1 factorial) study aimed to ascertain an understanding of the interactions between different geometries on the resulting Radar Cross Section (RCS) of a target. The results of the study are in lin...; 关键词：Radar Cross Section RCS Geometrical Attributes RADAR STEALTH

Geometrical transition properties of vortex cavitation and associated flow-choking characteristics in poppet valves: 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2024年第6期455-469,共15页Liang LU Zhongdong LIANG Yuming LIU Zhipeng WANG Shohei RYU; supported by the National Natural Science Foundation of China(Nos.52075387 and 52375060);the Shanghai Natural Science Foundation of China(No.22ZR1464400);the National Key R&D Program of China(No.2019YFB2005102);the Shanghai Municipal Science and Technology Major Project(No.2021SHZDZX0100);the Fundamental Research Funds for the Central Universities(No.2022-1-ZD-04),China.; Poppet valves have become increasingly significant in ensuring precise digital flow rate and pressure control in hydraulic systems,necessitating a more profound understanding of the geometrical properties of cavitatio...; 关键词：Poppet valves Vena contracta Vortex flow Vapor cavity Flow-choking

Simulation of the deformable lateral boundaries in biaxial test using DEM: 《Particuology》2024年第5期161-175,共15页Ali Momeni Barry Clarke Yong Sheng Ali Hassanpour; Applying the discrete element method(DEM)in soil mechanics can provide abundant information at the particle-scale and facilitates illustration of the macro-mechanical behaviour of soils based on the inter-particle mec...; 关键词：Discrete element method Biaxial test Deformable boundaries Shear band Critical state Fabric anisotropy Geometrical stability index

Influence of manufacturing process-induced geometrical defects on the energy absorption capacity of polymer lattice structures: 《Defence Technology（防务技术）》2024年第5期47-59,共13页Alexandre Riot Enrico Panettieri Antonio Cosculluela Marco Montemurro; Modern additive manufacturing processes enable fabricating architected cellular materials of complex shape,which can be used for different purposes.Among them,lattice structures are increasingly used in applications r...; 关键词：Lattice structures Architected cellular materials Dynamic simulation Energy absorption Geometrical imperfection Additive manufacturing

SHARP MORREY REGULARITY THEORY FOR A FOURTH ORDER GEOMETRICAL EQUATION被引量：1: 《Acta Mathematica Scientia》2024年第2期420-430,共11页向长林郑高峰; supported by the National Natural Science Foundation of China(12271296,12271195).; This paper is a continuation of recent work by Guo-Xiang-Zheng[10].We deduce the sharp Morrey regularity theory for weak solutions to the fourth order nonhomogeneous Lamm-Rivière equation △^{2}u=△(V▽u)+div(w▽u)+...; 关键词：fourth order elliptic equation regularity theory Morrey space decay estimates Riesz potential

Exploring van der Waals materials with high anisotropy:geometrical and optical approaches: 《Light(Science & Applications)》2024年第4期645-653,共9页Aleksandr S.Slavich Georgy A.Ermolaev Mikhail K.Tatmyshevskiy Adilet N.Toksumakov Olga G.Matveeva Dmitriy V.Grudinin Kirill V.Voronin Arslan Mazitov Konstantin V.Kravtsov Alexander V.Syuy Dmitry M.Tsymbarenko Mikhail S.Mironov Sergey M.Novikov Ivan Kruglov Davit A.Ghazaryan Andrey A.Vyshnevyy Aleksey V.Arsenin Valentyn S.Volkov Kostya S.Novoselov; K.S.N.acknowledges support from the Ministry of Education,Singapore(Research Centre of Excellence award to the Institute for Functional Intelligent Materials,I-FIM,project No.EDUNC-33-18-279-V12)and from the Royal Society(UK,grant number RSRP\R\190000).;S.M.N.acknowledges the financial support from the Ministry of Science and Higher Education(agreement No.075-15-2022-1150);A.S.S.and A.N.T.gratefully acknowledge the financial support from the RSF(grant No.22-19-00558);D.A.G.,A.V.A.,and V.S.V.acknowledge support from the Higher Education and Science Committee of the Ministry of Education,Science,Culture,and Sport of the Republic of Armenia Project No.23RL-2A031;D.M.T.acknowledges support from the M.V.Lomonosov Moscow State University Program of Development.; The emergence of van der Waals(vdW)materials resulted in the discovery of their high optical,mechanical,and electronic anisotropic properties,immediately enabling countless novel phenomena and applications.Such succes...; 关键词：ANISOTROPY ANISOTROPIC HIGH

Quantitative Study on Morphological Change Characteristics of Tonle Sap Lake Based on DEM: 《Open Journal of Modern Hydrology》2024年第1期1-13,共13页Yan Huang Yifei Tian Changwen Li Wu Liu Nan Zhang Haiyang Wang Yue Wu Wanting Feng Yifan Yu; Lake is an important part of the natural ecosystem, and its morphological characteristics reflect the capacity of lake regulation and storage, the strength of material migration, and the characteristics of shoreline d...; 关键词：Tonle Sap Lake DEM Geometrical Morphology Variation Characteristic

FEA-based Geometrical Modification of Switched Reluctance Motor for Radial Force Reduction被引量：1: 《Chinese Journal of Electrical Engineering》2024年第1期124-135,共12页Rani S Jayapragash R; Switched reluctance motors(SRMs)are becoming increasingly popular in the automotive sector owing to their robust design.Moreover,SRMs are preferred particularly for EV applications owing to their fault tolerance,magne...; 关键词：8/6 SRM radial force modal analysis FEA analysis natural frequencies SRM with windows

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