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Effect of local chilling on morphology of primary α(Al) in semi-solid A356 alloy LIU Zheng(刘 政)1, 2, MAO Wei-min(毛卫民)2, ZHAO Zhen-duo(赵振铎)2 1. Faculty of Material and Chemical Engineering...; Abstract: The semi-solid slurry of A356 alloy was prepared by low superheat pouring and slightly electromagnetic stirring, in which a pure copper rod was used to produce local chilling......
Trans. Nonferrous Met. Soc. China 20(2010) s821-s825 In-situ observation of crystal detachment behavior in NH4Cl-H2O system from chilling metal surface with vibration ZHANG Ying(张... 2010; accepted 12 July 2010 Abstract:The crystal detachment behaviors from a chilling solid surface with vibration were investigated using a transparent NH4Cl-70%H2O alloy. The nucleation......
Local sparse representation for astronomical image denoisingYANG A-feng(杨阿锋), LU Min(鲁敏), TENG Shu-hua(滕书华), SUN Ji-xiang(孙即祥) (School of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China)Abstract:Motivated by local coordinate coding (LCC) theory in nonlinear manifold learning, a new image representation model called local sparse representation......
J. Cent. South Univ. Technol. (2007)03-0436-06 DOI: 10.1007/s11771-007-0085-1牋 牋牋牋牋牋牋 Abstract: The optimal operation of water distribution networks under local pipe failures, such as water main breaks, was proposed. Based on a hydraulic analysis and a simulation of water distribution networks, a macroscopic model for a network under a local pipe failure was established......
J. Cent. South Univ. (2012) 19: 273-281 DOI: 10.1007/s11771-012-1001-x CFD prediction of local scour hole around bridge piers ZHU Zhi-wen(祝志文)1, LIU Zhen-qing(刘震卿)1, 2 1. College of Civil Engineering... Abstract: In order to predict the local scour hole and its evaluation around a cylindrical bridge pier, the computational fluid dynamics (CFD) and theories of sediment movement and transport were......
Hybrid particle swarm optimization with differential evolution and chaotic local search to solve reliability-redundancy allocation problemsTAN Yue(谭跃)1, 2, TAN Guan-zheng(谭冠政)1, DENG Shu-guang(邓曙光)2...) with differential evolution (DE) and a new chaotic local search. In the CDEPSO algorithm, DE provides its best solution to PSO if the best solution obtained by DE is better than that by PSO, while......
J. Cent. South Univ. (2020) 27: 3213-3226 DOI: https://doi.org/10.1007/s11771-020-4541-5 Local corrosion characteristics of a graphene-oxide-modified inner coating LIAO Ke-xi(廖柯熹)1, LI Xiao-xiao(李肖... 2020 Abstract: Pencil hardness testing, electrochemical impedance spectroscopy, scanning electron microscopy, and scanning Kelvin probe microscopy were used to study the local corrosion......
Local information enhanced LBPZHANG Gang(张刚)1, 2, SU Guang-da(苏光大)1, CHEN Jian-sheng(陈健生)1, WANG Jing(王晶)1(1. Department of Electronic Engineering, Tsinghua University, Beijing 100084, China;2... difference sum, local information enhanced LBP (local binary pattern) approach, i.e. LE-LBP, is presented. Geometric information of the pixel neighborhood is used to compute minimum distance sum. Gray......
J. Cent. South Univ. (2018) 25: 259-276 DOI: https://doi.org/10.1007/s11771-018-3735-6 Exploiting global and local features for image retrieval LI Li(李莉)1, FENG Lin(冯林)1, 2, WU Jun(吴俊)2, SUN Mu-xin... good and bad features. To address the problems above, a novel hybrid framework for color image retrieval through combination of local and global features achieves higher retrieval precision. The bag......
J. Cent. South Univ. (2018) 25: 84-94 DOI: https://doi.org/10.1007/s11771-018-3719-6 A background refinement method based on local density for hyperspectral anomaly detection ZHAO Chun-hui(赵春晖... method based on the local density is proposed to remove the anomalies from the background. In this work, the local density is measured by its spectral neighbors through a certain radius which......
