作者: He Guang,Mei Feng-Xiang (School of Aerospace Science and Engineering, Beijing Institute of Technology, Beijing 100081, China;School of Science, Beijing Institute of Technology, Beijing 100081, China)
出处: 中国物理B(英文版) 2008 第17卷 第3期 P822-824
关键词: Noether\'s;method;Poisson\'s;method;higher;order;ordinary;differential;equation;integration
摘要: This paper studies integration of a higher-order differential equation which can be reduced to a second-orderordinary differential equation. The solut ...
作者: Jia Li-Qun,Xie Jia-Fang,Zheng Shi-Wang (School of Science,Jiangnan University,Wuxi 214122,China;Department of Mechanics,Beijing Institute of Technology,Beijing 100081,China;Department of Physics and Information Engineering,Shangqiu Teachers College,Shangqiu 476000,China)
出处: 中国物理B(英文版) 2008 第17卷 第1期 P17-22
关键词: Appell;equation;Mei;conserved;quantity;Mei;symmetry;non-Chetaev;nonholonomic;system
摘要: This paper investigates structure equation and Mei conserved quantity of Mei symmetry of Appell equations for non-Chetaev nonholonomic systems.Appell ...
作者: Jia Li-Qun,Xie Jia-Fang,Luo Shao-Kai (School of Science,Jiangnan University,Wuxi 214122,China;Faculty of Science,Beijing Institute of Technology,Beijing 100081,China;Institute of Mathematical Mechanics and Mathematical Physics,Zhejiang Sci-Tech University,Hangzhou 310018,China)
出处: 中国物理B(英文版) 2008 第17卷 第5期 P1560-1564
关键词: Nielsen;style;unilateral;nonholonomic;constrained;system;Mei;symmetry;Mei;conserved;quantity
摘要: This paper studies the Mei symmetry and Mei conserved quantity for nonholonomic systems of unilateral Chetaev type in Nielsen style.The differential e ...
作者: 赵培涛1;张寅超2;王莲3;胡顺星1;苏嘉1;曹开法1;赵曰峰4;胡欢陵1; (1Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences;2Department of Optical Engineering, Laboratory of Photoelectric Imaging and Information Engineering, Beijing Institute of Technology;3Department of Chemical Physics, University of Science and Technology of China;4College of Physics and Electronics, Shandong Normal University)
出处: 中国物理B 2008 第17卷 第1期 P335-342
关键词: Raman;lidar;atmospheric;CO;2;minimum;detectable;concentration
摘要: Lidar (Light detection and ranging) has special capabilities for remote sensing of many different behaviours of the atmosphere. One of the techniques ...
作者: Ding Xin,Zhang Shao-Min,Ma Hong-Mei,Pang Ming,Yao Jian-Quan,Li Zhuo (College of Precision Instrument and Opto-Electronics Engineering,Institute of Laser and Opto-Electronics,Tianjin University,Tianjin 300072,China;Key Laboratory of Opto-Electronics Information Science and Technology,Ministry of Education,Tianjin 300072,Chi;School of Information Science and Technology,Department of Opto-Electronic Engineering,Beijing Institute of Technology,Beijing 100081,China)
出处: 中国物理B(英文版) 2008 第17卷 第1期 P211-216
关键词: continuous-wave;mid-infrared;intracavity;optical;parametric;oscillator;periodically;poled;lithium;niobate;crystal
摘要: This paper reports a continuous-wave (CW) mid-infrared intracavity singly resonant optical parametric o6cillatorbased on periodically poled lithium ni ...
作者: Li Xue-Lin,Feng Shun-Shan,Chen Guo-Guang (North University of China, Taiyuan 030051, China;Shandong Machinery (Group) Co. Ltd, Zibo 255201, China;Beijing Institute of Technology, Beijing 100081, China;North University of China, Taiyuan 030051, China)
出处: 中国物理B(英文版) 2008 第17卷 第3期 P1070-1077
关键词: TiN;nanocrystal;size;density;non-volatile;memory;application
摘要: Non-volatile memory based on TiN nanocrystal (TiN-NC) charge storage nodes embedded in SiO2 has been fabricated and its electrical properties have bee ...
作者: Chaoguang Huang,Yu Tian,Xiaoning Wu,Hanying Guo (Institute of Theoretical Physics,The Chinese Academy;Beijing 100049,China;Department of Physics,Beijing Institute of Technology,Beijing;China;Institute of Mathematics,Academy of Mathematics and System;The Chinese Academy of Sciences,Beijing 100080,China;Institute of Theoretical Physics,The Chinese Academy of;Beijing 100080,China)
出处: Frontiers of Physics in China 2008 第3卷 第2期 P191-194
关键词: torsion-free;vacuum;solutions;model;of;de;Sitter;gauge;theory;gravity
摘要: It is shown that all vacuum solutions of Einstein field equation with a positive cosmological constant are the solutions of a model of dS gauge theory ...
作者: 祝爱玉,范天佑 (School of Science,Beijing Institute of Technology)
出处: Journal of Beijing Institute of Technology 2008 第3期 P355-360
关键词: metal;foams;constitutive;law;TG;model;the;relative;density;kinematics;parameter
摘要: Exact solution of the stress and velocity fields of a cylinder tube of metallic foams under inner Pressure is given in which the Triantafillou and Gib ...
作者: 徐春广,吕冬明,郝娟 (School of Mechanical and Vehicular Engineering,Beijing Institute of Technology)
出处: Journal of Beijing Institute of Technology 2008 第3期 P270-273
关键词: magnetic;bearing;fuzzy;design;fuzzy-PID;control;performance;experiments
摘要: The five degree freedom magnetic bearing is researched and its structure and working principles are introduced also.Based on the fuzzy control technol ...
作者: 余晓泓 (北京理工大学管理与经济学院;)
出处: 改革与战略 2008 第24卷 第12期 P153-155
关键词: 美国文化产业;投融资机制;启示
摘要: 美国完善的融资体制、多样化的融资方式、多元化的融资渠道为美国文化产业发展提供了重要的保障,从而奠定了美国文化产业的世界霸主地位。美国文化产业融资方面的独到作法对中国文化产业融资机制的选择提供了诸多可资借鉴的经验。
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