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An approach for complex activity recognition by key framesXIA Li-min(夏利民), SHI Xiao-ting(时晓亭), TU Hong-bin(涂宏斌) (School of Information Science and Engineering, Central South University, Changsha 410075, China)Abstract:A new method for complex activity recognition in videos by key frames was presented. The progressive bisection strategy (PBS) was employed to divide the complex activity......
J. Cent. South Univ. Technol. (2010) 17: 755-759 DOI: 10.1007/s11771-010-0552-y Photocatalytic activity of bauxite-tailings supported nano-TiO2 LU Qing-hua(卢清华) , HU Yue-hua(胡岳华), WANG Meng(王梦... of phenol concentration under different illumination time. Effects of the calcination temperature, the pH and the cycles on the photocatalytic activity of TiO2/BTs composites were investigated......
Equivalent Activity Coefficient Phenomenon of Cerium Reacting with Lead or Bismuth in Ag, Cu and Zn Alloy 钱乙余1,薛松柏1,董健2 (1.National Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China;2.Harbin Welding Institute, Harbin 150080, China) Abstract:The relation between contents of cerium and impurity lead or bismuth to their activity......
J. Cent. South Univ. (2016) 23: 787-792 DOI: 10.1007/s11771-016-3124-y Synthesis, characterization and antimicrobial activity of alkaline ion-exchanged ZnO/bentonite nanocomposites Hamideh..., 60 and 90 min. The complexes were characterized by XRD, SEM and DRS. XRD analyses and SEM observations confirmed the diffusion of zinc to the clay surfaces. Antibacterial activity tests against......
reflectance spectroscopy. The Fe-doped CuO sample shows higher adsorption capacity and photocatalytic activity for xanthate degradation than pure CuO under visible light irradiation. In addition... degradation, and the apparent rate constant ( k ) was calculated. The value of k for Fe-doped CuO is 1.5 times that of pure CuO. The higher photocatalytic activity of Fe-doped CuO is attributed......
J. Cent. South Univ. (2012) 19: 9-16 DOI: 10.1007/s11771-012-0965-x Influence of zinc on electrochemical discharge activity of Mg-6%Al-5%Pb anode WANG Nai-guang(王乃光), WANG Ri-chu(王日初), PENG Chao-qun...; electrochemistry; electrochemical discharge activity 1 Introduction Because of the rapid activation, high cell voltage, wide voltage range, high power density capability, relatively low density, low......
Preparation and photocatalytic activity of nano-TiO2 codoped with fluorine and ferric LI Fa-tang(李发堂)1, LIU Rui-hong(刘瑞红)1, ZHAO Di-shun(赵地顺)2, SUN Zhi-min(孙智敏)1, QU Zhi-ming(曲志明)3 1. College...+ are doped into TiO2. The F- and Fe3+ doping can help to enhance the nano-TiO2 photocatalytic activity greatly. The appropriate codoping conditions for F-Fe are n(F)/n(TiO2)=2%, n(Fe)/n(TiO2)=0.05......
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:A Calculation model of activity coefficient for NaOH-NaAl(OH)4-Na2CO3-H2O system PENG Xiao-qi1, 2, 3, SONG Guo-hui1, SONG Yan-po1, 2, ZHANG Jian-zhi1, LIU Zhen-guo1 (1... and Na2CO3 were obtained by calibration regression on their experimental activity coefficients. The activity coefficient calculation model for NaOH-NaAl(OH)4-Na2CO3-H2O system was established based......
Speech enhancement through voice activity detection using speech absence probability based on teager energyParkYun-sik1, Lee Sang-min1, 2 (1. Department of Electronic Engineering, Inha University, Incheon 402-751, Korea; 2. Institute for Information and Electronics Research, Inha University, Incheon 402-751, Korea)Abstract:In this work, a novel voice activity detection (VAD) algorithm that uses......