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FLATNESS: 作品数：89被引量：155H指数：7; 导出分析报告; 相关领域：生物学更多>>; 相关作者：康仁科冯光霍凤伟郭东明赵洪斌更多>>; 相关机构：大连理工大学北京海思威科技有限公司北京医疗器械研究所北京大学更多>>; 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北省自然科学基金国家教育部博士点基金更多>>

Feasibility Study on Magnetorheological Finishing of Thin Copper Substrate: 《Chinese Journal of Mechanical Engineering》2024年第6期173-182,共10页Bo Pan Renke Kang Yunfei Zhang Kailong Li Dongxing Du Xiaoguang Guo Chao Wang Jiang Guo Xianglong Zhu Wen Huang; Supported by Science Challenge Project of China(Grant Nos.TZ2016006-0103,TZ2016006-0107-02);National Natural Science Foundation of China(Grant No.51975096);Liaoning Revitalization Talents Program of China(Grant No.XLYC1807230);National Key Research and Development Program of China(Grant No.2017YFA0701200)。; Thin copper substrates with high accuracy are highly required in precision physical experiments.However,even using double-sided lapping,the flatness is still limited due to the accuracy of lapping plate,process vibrat...; 关键词：Magnetorheological finishing Thin copper substrate FLATNESS DEFORMATION

On a Cosmological Model with Variable Time Flow: 《Journal of High Energy Physics, Gravitation and Cosmology》2024年第4期1514-1530,共17页Ralph Gramigna; The Friedmann-Lemaître-Robertson-Walker (FLRW) metric is an exact solution of the Einstein field equations and it describes a homogeneous, isotropic and expanding universe. The FLRW metric and the Friedmann equations ...; 关键词：COSMOLOGY Dark Energy Cosmic Inflation Flatness Problem Hubble Tension

Melting Flow Analyzation of Radiative Riga Plate Two-Phase Nano-Fluid Across Non-Flatness Plane with Chemical Reaction: 《Frontiers in Heat and Mass Transfer》2024年第5期1515-1532,共18页Jupudi Lakshmi Rama Prasad F.Mebarek-Oudina G.Dharmaiah Putta Babu Rao H.Vaidya; There is a strong relationship between analytical and numerical heat transfers due to thermodynamically anticipated findings,making thermo-dynamical modeling an effective tool for estimating the ideal melting point of...; 关键词：Non-flat sheet melting surface chemical reaction 2-phase nano fluid

Anti‐sloshing control:Flatness‐based trajectory planning and tracking control with an integrated extended state observer: 《IET Cyber-Systems and Robotics》2024年第3期31-48,共18页Khanh Nguyen Viet Minh Do Duc Thanh Cao Duc Tung Lam Nguyen; Hanoi University of Science and Technology,Grant/Award Number:T2023‐TĐ‐002。; The phenomenon of sloshing causes a significantly negative impact on a wide range of industries.A time‐optimal flatness‐based trajectory planning and Lyapunov‐based model predictive control(LMPC)is proposed for tra...; 关键词：CONTROL dynamic model motion planning

Laser-induced breakdown spectroscopy as a method for millimeter-scale inspection of surface flatness: 《Plasma Science and Technology》2024年第9期148-155,共8页Jinrui YE Yaju LI Zhao ZHANG Xinwei WANG Kewei TAO Qiang ZENG Liangwen CHEN Dongbin QIAN Shaofeng ZHANG Lei YANG Xinwen MA; supported in part by the National Key Research and Development Program of China(No.2022YFA1602500);National Natural Science Foundation of China program(No.U2241288).; A non-contact method for millimeter-scale inspection of material surface flatness via Laser-Induced Breakdown Spectroscopy(LIBS)is investigated experimentally.The experiment is performed using a planished surface of a...; 关键词：laser-induced breakdown spectroscopy machine learning surface flatness

Intelligent representation method of image flatness for cold rolled strip: 《Journal of Iron and Steel Research International》2024年第5期1177-1195,共19页Yang-huan Xu Dong-cheng Wang Hong-min Liu Bo-wei Duan; supported by the National Natural Science Foundation of China(No.U21A20118);the National Key Laboratory of Metal Forming Technology and Heavy Equipment,China National Heavy Machinery Research Institute Co.,Ltd.(No.S2208100.W04).; Real flatness images are the bases for flatness detection based on machine vision of cold rolled strip.The characteristics of a real flatness image are analyzed,and a lightweight strip location detection(SLD)model wit...; 关键词：Cold rolled strip Image flatness Location detection Representation learning Bottleneck layer

Intense white laser of high spectral flatness via optical-damage-free water–lithium niobate module: 《Advanced Photonics Nexus》2024年第1期61-67,共7页Lihong Hong Yuanyuan Liu Haiyao Yang Lingzhi Peng Mingzhou Li Yujie Peng Ruxin Li Zhi-Yuan Li; supported by the Science and Technology Project of Guangdong (Grant No.2020B010190001);the National Natural Science Foundation of China (Grant No.11974119);the Guangdong Innovative and Entrepreneurial Research Team Program (Grant No.2016ZT06C594);the National Key R&D Program of China (Grant No.2018YFA 0306200).; A supercontinuum white laser with ultrabroad bandwidth,intense pulse energy,and high spectral flatness can be accomplished via synergic action of third-order nonlinearity(3rd-NL)and second-order nonlinearity.In this w...; 关键词：intense white laser optical-damage-free water third-order nonlinearity second-order nonlinearity

Strip flatness prediction of cold rolling based on ensemble methods被引量：1: 《Journal of Iron and Steel Research International》2024年第1期237-251,共15页Wu-quan Yang Zhi-ting Zhao Liang-yu Zhu Xun-yang Gao Li Wang; This study was supported by the National Key Research and Development Program of China(No.2017YFB0304100);Key Projects of the National Natural Science Foundation of China(No.51634002).; Aiming at the problem of insufficient prediction accuracy of strip flatness at the outlet of cold tandem rolling,the prediction performance of strip flatness based on different ensemble methods was studied and a high-...; 关键词：Tandem cold rolling Flatness prediction Machine learning Ensemble method

A novel multi-threshold coupling InAlN/GaN double-channel HEMT for improving transconductance flatness: 《Science China(Information Sciences)》2024年第1期310-311,共2页Sirui AN Minhan MI Pengfei WANG Sijia LIU Qing ZHU Meng ZHANG Zhihong CHEN Jielong LIU Siyin GUO Can GONG Xiaohua MA Yue HAO; supported by National Key R&D Program of China (Grant No.2021YFB3602404)。; GaN-based HEMTs have significant advantages,making them a prime choice for high-frequency,high-power switching [1].However,the inherent poor linearity of GaN HEMT has yet to be solved,which can be reflected by the non...; 关键词：TRANSCONDUCTANCE HEMT HEMTS

Pseudo-Effective Vector Bundles with Vanishing First Chern Class on Astheno-Kähler Manifolds: 《Chinese Annals of Mathematics,Series B》2023年第6期819-826,共8页Yong CHEN Xi ZHANG; supported by the National key R&D Program of China(No.2020YFA0713100);the National Natural Science Foundation of China(No.12141104);the Jiangsu Funding Program for Excellent Postdoctoral Talent(No.2023ZB491).; Let E be a holomophic vector bundle over a compact Astheno-Kähler manifold(M,ω).The authors would prove that E is a numerically flat vector bundle if E is pseudoeffective and the first Chern class c_(1)^(BC)(E)is zero.; 关键词：Pseudo-effective Astheno-Kähler Numerically flatness

FLATNESS