SHARPNESS

作品数：28被引量：49H指数：4
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相关领域：自动化与计算机技术更多>>
相关作者：应怀樵杨超刘进明沈松更多>>
相关机构：北京东方振动和噪声技术研究所兰州大学更多>>
相关期刊：《Nano-Micro Letters》《Science China Mathematics》《Acta Mathematica Scientia》《Chinese Annals of Mathematics,Series B》更多>>
相关基金：国家自然科学基金国家高技术研究发展计划中国博士后科学基金北京市自然科学基金更多>>
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Investigation on the vortical structures by the Liutex method in turbulent channels at Re_(τ)=180 with scalloped and triangular riblet control
《Journal of Hydrodynamics》2024年第1期35-52,共18页Zhang-dan Yu Shang Jiang Hai-dong Yu Bi-yu Pang Xin Dong Yi-qian Wang 
supported by the Jiangsu Shuangchuang Project(Grant No.JSSCTD202209);the National Science Foundation of the Jiangsu Higher Education Institutions of China(Grant No.22KJB130011).
Riblets are a series of small protrusions formed along the flow direction,which have been extensively studied as a passive turbulent drag reduction technique.Experiments and numerical simulations have shown that well-...
关键词：Liutex vector riblet drag reduction tip sharpness turbulent channel SCALLOPED 
Classification-Detection of Metal Surfaces under Lower Edge Sharpness Using a Deep Learning-Based Approach Combined with an Enhanced LoG Operator被引量：1
《Computer Modeling in Engineering & Sciences》2023年第11期1551-1572,共22页Hong Zhang Jiaming Zhou Qi Wang Chengxi Zhu Haijian Shao 
supported by the National Natural Science Foundation of China(No.62001197);Natural Sciences Research Grant for Colleges and Universities of Jiangsu Province(No.22KJD470002);Jiangsu Provincial Postgraduate Research and Practice Innovation Program(No.XSJCX21_58).
Metal flat surface in-line surface defect detection is notoriously difficult due to obstacles such as high surface reflectivity,pseudo-defect interference,and random elastic deformation.This study evaluates the approa...
关键词：Deep learning gaussian-laplace algorithm texture feature scratch detection 
Eco-friendly bacteria-killing by nanorods through mechano-puncture with top selectivity
《Bioactive Materials》2022年第9期173-184,共12页Jing Ye Bo Li Yufeng Zheng Shuilin Wu Dafu Chen Yong Han 
the National Natural Science Foundation of China(Grant number 51631007,51971171 and 3700860);the joint project of Xi’an Jiaotong University and Beijing Research Institute of Traumatology and Orthopaedics(Contract No.202012443)for financially supporting this work.
Nanorods can induce mechano-puncture of Staphylococcus aureus(S.aureus)that often impairs osseointegration of orthopedic implants,while the critical nanorod top sharpness able to puncture S.aureus and the predominant ...
关键词：ANTI-BACTERIA NANORODS Top sharpness Mechano-puncture Finite element simulation 
On the tip sharpness of riblets for turbulent drag reduction被引量：1
《Acta Mechanica Sinica》2022年第4期39-55,I0001,共18页Yiqian Wang Yi Huang Song Fu 
the National Natural Science Foundation of China(Grant No.11702159);the EU-China Joint Project Drag Reduction via Turbulent Boundary Layer Flow Control(Grant No.690623).
It is commonly known that riblets with sharper tip generally have better turbulent drag reduction capacity,which,however,poses great challenges for manufacturing and makes the riblets vulnerable to tip erosion.In this...
关键词：Riblet Turbulent drag reduction Tip sharpness Protrusion height Direct numerical simulation 
Defocus blur detection using novel local directional mean patterns(LDMP)and segmentation via KNN matting
《Frontiers of Computer Science》2022年第2期110-122,共13页Awais KHAN Aun IRTAZA Ali JAVED Tahira NAZIR Hafiz MALIK Khalid Mahmood MALIK Muhammad Ammar KHAN 
This work was supported and funded by the Directorate ASR&TD of UET-Taxila.
Detection and segmentation of defocus blur is a challenging task in digital imaging applications as the blurry images comprise of blur and sharp regions that wrap significant information and require effective methods ...
关键词：defocus blur detection local directional mean patterns image matting sharpness metrics blur segmentation 
Defocus Blur Segmentation Using Genetic Programming and Adaptive Threshold被引量：1
《Computers, Materials & Continua》2022年第3期4867-4882,共16页Muhammad Tariq Mahmood 
This work was supported by the BK-21 FOUR program through National Research Foundation of Korea(NRF)under Ministry of Education.
Detection and classification of the blurred and the non-blurred regions in images is a challenging task due to the limited available information about blur type,scenarios and level of blurriness.In this paper,we propo...
关键词：Blur measure blur segmentation sharpness measure genetic programming support vector machine 
Sharpness of the paired 660-km discontinuity beneath the Izu-Bonin area被引量：4
《Earth and Planetary Physics》2020年第6期627-638,共12页LiMing Wang XiaoBo He 
We are grateful for the thoughtful and constructive comments provided by two anonymous reviewers and the editor(Dr.Wei Leng).We also thank Jinfeng Hu for his contributions to this work at an early stage.Seismic data from the USArray network were accessed via the Data Management Center(DMC)of the Incorporated Research Institutions for Seismology(IRIS).Some figures were prepared using Generic Mapping Tools(GMT,Wessel and Smith,1999);GNUPLOT.This work was funded by the National Natural Science Foundation of China(grant no.91858205).
The 660-km discontinuity that separates the Earth's upper and lower mantle has primarily been attributed to phase changes in olivine and other minerals.Resolving the sharpness is essential for predicting the compositi...
关键词：660-km discontinuity S-to-P conversions IZU-BONIN SHARPNESS mid-oceanic ridge basalt 
Development of separation sharpness model for hydrocyclone被引量：3
《Chinese Journal of Chemical Engineering》2020年第3期785-792,共8页Pakpoom Supachart Thanit Swasdisevi Pratarn Wongsarivej Mana Amornkitbamrung Naris Pratinthong 
the NSTDA University Industry Research Collaboration(NUI-RC)Thailand for supporting the funding in the research。
Hydrocyclones are mechanical devices used in classifying and separating many different types of materials.A classification function of the hydrocyclone has been continually developed for solid–liquid separation.In th...
关键词：MODEL HYDROCYCLONE SEPARATION SHARPNESS SLURRY VISCOSITY 
3D Web Reconstruction of a Fibrous Filter Using Sequential Multi-Focus Images
《Computer Modeling in Engineering & Sciences》2019年第5期365-372,共8页Lingjie Yu Guanlin Wang Chao Zhi Bugao Xu 
A fibrous filtering material is a kind of fiber assembly whose structure exhibits a three-dimensional(3D)network with dense microscopic open channels.The geometrical/morphological attributes,such as orientations,curva...
关键词：3D RECONSTRUCTION SHARPNESS EVALUATION FIBER WEB 
Battlefield dynamic scanning and staring imaging system based on fast steering mirror被引量：3
《Journal of Systems Engineering and Electronics》2019年第1期37-56,共20页CHANG Tianqing WANG Quandong ZHANG Lei HAO Na DAI Wenjun 
supported by the National Defense Pre-research Project of China during the 12th Five-year Plan Period(4040570201);Innovation Project of Military Academy(ZYX14060014)
This paper presents the design of an experimental battlefield dynamic scanning and staring imaging system based on a fast steering mirror(FSM), which is capable of real-time monitoring of hot targets and wide-area rec...
关键词：fast STEERING mirror (FSM) dynamic scanning and staring backscanning compensation DISTURBANCE OBSERVER (DOB) point sharpness. 
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