作者: ZHENG Ji-Ming,HUANG Yao-Qing,REN Zhao-Yu,YANG Hui-Jing,CAO Mao-Sheng (Institute of Photonics and Photo-technology, National Key Laboratory of Photoelectric Technology and Functional Materials Culture Base, and National Photoelectric Technology and Functional Materials and Application of Science and Technology International;School of Science, Shanghai Institute of Technology, Shanghai;School of Material Science and Engineering, Beijing Institute of Technology, Beijing)
出处: 中国物理快报(英文版) 2011 第28卷 第2期 P187-190
关键词: energy;FERMI;RINGS
摘要: The electron transport through diaminoacenes sandwiched between two Au electrodes is simulated by using a first-principles analysis.The nonlinear curr ...
作者: Ram Chand,Abdul Qadir,SHI Qing-Fan,ZHENG Ning,SUN Gang (Key Laboratory of Cluster Science of Ministry of Education,and School of Physics,Beijing Institute of Technology,Beijing;Beijing National Laboratory for Condensed Matter Physics and Key Laboratory of Soft Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing)
出处: 中国物理快报(英文版) 2011 第28卷 第9期 P260-262
关键词: APPARENT;PACKING;instead
摘要: The apparent mass at the bottom of a granular pile confined in a vertical tube decreases for denser granular packing.We report that the denser granula ...
作者: 胡晓松,孙逢春,邹渊 (National Engineering Laboratory for Electric Vehicles,Beijing Institute of Technology)
出处: 哈尔滨工业大学学报(英文版) 2011 第5期 P49-54
关键词: battery;modeling;SOC;distribution;numerical;optimization;lithium-ion;battery;electric;vehicle
摘要: In order to simulate electrical characteristics of a lithium-ion battery used in electric vehicles in a good manner,a three-layer battery model is est ...
作者: Zi-hui Liu (Department of Mathematics, Beijing Institute of Technology, Beijing 100081, China)
出处: 应用数学学报(英文版) 2011 第27卷 第1期
关键词: AMDS;codes;weight;hierarchies;finite;chain;rings
摘要: The properties of the generator matrix are given for linear codes over finite commutative chain rings, and the so-called almost-MDS (AMDS) codes are s ...
作者: Peng-fei YANG (School of Science, Beijing Institute of Technology, Beijing 100081, China)
出处: 应用数学学报(英文版) 2011 第27卷 第4期 P639-646
关键词: synchronous;coupling;reflecting;Brownian;motion;hot;spots;conjecture;Neumann;eigenfunctions
摘要: In this paper,we define a class of domains in R n .Using the synchronous coupling of reflecting Brownian motion,we obtain the monotonicity property of ...
作者: Zhao Junfang,Wang Peiguang,Ge Weigao (School of Information Engineering,China University of;Beijing 100083,China;College of Electronic and Information Engineering,Hebei;Baoding,Hebei 071002,China;Department of Mathematics,Beijing Institute of Technology,;China)
出处: 非线性科学与数值模拟通讯 2011 第16卷 第1期 P402-413
关键词: Third;order;Positive;solutions;Fixed-point;index;theory;Boundary-value;problem;Integral;boundary;condition;Measure;of;noncompactness
摘要: This paper investigates the existence, nonexistence, and multiplicity of positive solutions for a class of nonlinear boundary-value problems of third ...
作者: Weilin Yi,Lucheng Ji,Yong Tian,Weiwei Shao,Weiwei Li,Yunhan Xiao (Research Center for Energy and Power, Chinese Academy of Sciences, Beijing 100190, China;Key Laboratory of Advanced Energy and Power, Chinese Academy of Sciences, (Institute of Engineering Thermophysics), Beijing 100190, China;School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China)
出处: Journal of Thermal Science 2011 第20卷 第3期 P211-217
关键词: Impeller;Diffuser;CFD;Aerodynamic;Design
摘要: In the present paper,the design of a transonic centrifugal compressor stage with the inlet relative Mach number about 1.3 and detailed flow field inve ...
作者: Weiwei Li,Yong Tian,Weilin Yi,Lucheng Ji,Weiwei Shao,Yunhan Xiao (Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China;Graduate School of Chinese Academy of Sciences, Beijing 100190, China;Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China;School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China)
出处: Journal of Thermal Science 2011 第20卷 第5期 P398-405
关键词: adjoint;method;aerodynamic;shape;optimization;multi-stage;turbomachinery;N-S;equations
摘要: Adjoint-based optimization method is a hotspot in turbomachinery.First,this paper presents principles of adjoint method from Lagrange multiplier viewp ...
作者: 彭赵旭,彭永臻,刘旭亮,于振波,柴同志 (State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology;College of Environment and Energy Engineering,Beijing Institute of Technology)
出处: 哈尔滨工业大学学报(英文版) 2011 第5期 P55-60
关键词: low;temperature;activated;sludge;SBR;nitrogen;and;phosphorus;removal;sludge;settleability
摘要: In order to investigate the effect of temperature on activated sludge systems,sludge settleability,nitrogen and phosphorus removal processes were inve ...
作者: 陈振,耿洁,刘向东 (北京理工大学自动化学院)
出处: 电工技术学报 2011 第26卷 第6期 P56-61
关键词: 永磁同步电机;矢量控制;速度控制;时变滑模
摘要: 针对永磁同步电机(PMSM)矢量控制系统,设计了一种积分时变滑模变结构的速度环控制器,解决了传统PID控制器鲁棒性差、系统抗扰能力弱和动态响应性能不佳的问题。在滑模面的设计中引入误差信号的积分项,避免控制量中对加速度信号的要求,增强系统的抗干扰能力;同时引入时变项,在保证系统全局稳定的前提下提高了滑 ...
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