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Spatiotemporal model of open-pit based on 3-D deposit modelXIA Chun-lin1, ZHOU Hui1, LI Qing-yuan2, MA Zhen-li3(1. School of Geomatics, Liaoning Technical University, Fuxin 123000, China; 2. State... method was put forward to make up the three-dimensional deposit model, and the spatiotemporal models of open-pit with temporal dynamics were also studied combined with the corrected models......
A dynamic model for railway freight overbookingFENG Fen-ling(冯芬玲), ZHANG Jia-qi(张佳琪), GUO Xiao-feng(郭晓峰) (School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China)Abstract:In order to apply overbooking idea in Chinese railway freight industry to improve revenue, a Markov decision process (dynamic programming) model for railway freight reservation......
J. Cent. South Univ. (2021) 28: 1775-1785 DOI: https://doi.org/10.1007/s11771-021-4661-6 Estimating model for urban carrying capacity on bike-sharing YU Jia-jie(余佳洁)1, JI Yan-jie(季彦婕)1, 2, YI Chen..., an estimating model was proposed to quantify the urban carrying capacity (UCC) for bike-sharing through the demand data. In this way, the maximum supply volume of bike-sharing that a city can accommodate can......
;the latter increases the effective reaction area and improves the reactivity,thus enhancing its kinetics.The classical shrinking core model was used to model the kinetics of bastnaesite mechanochemical... fractal geometry to deal with the irregular system,the model was further optimized,and the regression coefficients increase to between 0.940 and 0.997.All these models considere shrinking particle......
;the latter increases the effective reaction area and improves the reactivity,thus enhancing its kinetics.The classical shrinking core model was used to model the kinetics of bastnaesite mechanochemical... fractal geometry to deal with the irregular system,the model was further optimized,and the regression coefficients increase to between 0.940 and 0.997.All these models considere shrinking particle......
J. Cent. South Univ. (2016) 23: 10-17 DOI: 10.1007/s11771-016-3043-y Analysis of 13Cr bloom solidification structure using CA-FE model ZHAI Ying-ying(翟莹莹)1, MA Bei-yue(马北越)1, LI Ying(厉英)1, JIANG.... A computational model using CA-FE (cellular automation-finite element) method coupled with heat transfer model is developed to describe the solidification structure in continuous casting process......
J. Cent. South Univ. (2018) 25: 1129-1143 DOI: https://doi.org/10.1007/s11771-018-3812-x RevRec: A two-layer reviewer recommendation algorithm in pull-based development model YANG Cheng(杨程), ZHANG... reviewers by checking whether they will participate or not without differentiating the participation types. In this paper, we develop a two-layer reviewer recommendation model to recommend reviewers......
J. Cent. South Univ. (2016) 23: 1944-1953 DOI: 10.1007/s11771-016-3251-5 Line of sight waypoint guidance for a container ship based on frequency domain identification of Nomoto model of vessel M. T... and roll dynamics to extract high quality frequency responses. From the extracted frequency responses, two linear transfer functions of Nomoto model are fitted for yaw and roll dynamics of the vessel......
system,PCAS)以及压汞仪PoreMaster-33对优选出的人造岩心微观孔隙结构进行观测与分析,处理过程如图5所示,提取岩心主要微观孔隙参数如图6所示. 图5 人造岩心SEM图像处理与孔隙分析过程 Fig. 5 SEM image processing and pore analysis process of artificial core 图6 人造岩心中孔隙分布 Fig. 6 Distribution of pore in artificial core 由图5可见:膨润土和黏结剂附着在石英颗粒表面,石英颗粒在二者的胶结作用以及压力的压实作用下形成岩心骨架和孔隙,孔隙之间通过喉道连通,从而形成孔隙网络.由图6可知:人造岩心孔隙直径主要分布在0~90 μm,呈单峰正态分布,直径在25~45 μm的孔隙概率超过60%.平均孔隙直径为35.69 μm,孔隙直径较大,且孔隙类型主要为......
J. Cent. South Univ. (2017) 24: 2010-2018 DOI: https://doi.org/10.1007/s11771-017-3610-x Development of dynamic-mathematical model of hydraulic excavator Vujic Dragoljub1, Lazarevic Olgica2, Batinic... deals with analysis of dynamic behaviour of hydraulic excavator on the basis of developed dynamic-mathematical model. The mathematical model with maximum five degrees of freedom is extended by new......