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检索条件"机构=Science and Technology on Complex Systems Simulation Laboratory"
3020 条 记 录,以下是2971-2980 订阅
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Second harmonic generation with a high-order mode laser beam
Second harmonic generation with a high-order mode laser beam
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Frontiers in Optics, FiO 2003
作者: Shimshi, L. Ishaaya, A.A. Davidson, N. Friesem, A.A. Hasman, E. Dept. of Physics of Complex Systems Weizmann Institute of Science Rehovot76100 Israel Optical Engineering Laboratory Faculty of Mechanical Engineering Technion - Israel Institute of Technology Haifa32000 Israel
Second harmonic generation can be highly efficient with a laser operating with a single high order mode. A 90% increase in output power was obtained with a Q-Switch Nd:YAG laser when it was operating with TEM01 rather... 详细信息
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Overview of the South China Sea Monsoon Experiment
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Advances in Atmospheric sciences 2004年 第3期21卷 343-360页
作者: 丁一汇 李崇银 柳艳菊 National Climate Center China Meteorological Administration Beijing 100081 State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 National Climate Center China Meteorological Administration Beijing 100081 State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid DynamicsInstitute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029he present paper gives an overview of the key project " South China Sea Monsoon Experiment (SCSMEX)" operated by the Ministry of Science and Technology of China during the period of 1996-2001. The SCSMEX is a joint atmospheric and oceanic field experiment which aims to better understand the onset maintenance and variability of the summer monsoon over the South China Sea (SCS). It is a large-scale international effort with many participating countries and regions cooperatively involved in this experiment. With the field observation in May-August 1998 a large amount of meteorological and oceanic data was acquired which provides excellent datasets for the study of the SCS monsoon and the East Asian monsoon and their interaction with the ocean. The preliminary research achievements are as follows. (1) The earliest onset of the Asian monsoon over the SCS and Indo-China Peninsula has been well documented. Prom the viewpoint of the synoptic process its onset is closely related to the early rapid development of a twin cyclone to the east of Sri Lanka. The conceptual modei of the SCS monsoon onset in 1998 was put forward. The 50-year time series of the SCS monsoon onset date was also made. (2) Two major modes namely the 30-60-day and 10-20-day oscillations were ascertained. The influences of the abnormal SCS monsoon on the precipitation over eastern China and its modes were identifled. A strong (weak) monsoon over the SCS usually leads to less (more) precipitation over the middle and lower reaches of the Yangtze River
The present paper gives an overview of the key project ' South China Sea Monsoon Experiment (SCSMEX)' operated by the Ministry of science and technology of China during the period of 1996-2001. The SCSMEX is a... 详细信息
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Effect of phase errors on laser mode selection with binary phase elements
Effect of phase errors on laser mode selection with binary p...
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Conference on Lasers and Electro-Optics Europe (CLEO EUROPE)
作者: G. Machavariani A.A. Ishaaya N. Davidson A.A. Friesem S. Blit E. Hasman Department of Physics of Complex Systems Weizmann Institute of Science Rehovot Israel Optical Engineering Laboratory Faculty of Mechanical Etigineering Tecknion-Israel Ituritute of Technology Haifa Israel
We present numerical and experimental investigations to determine the effect of such surface height deviations of the intra-cavity binary phase elements inserted into an Nd-YAG laser and the selection of the Laguerre-... 详细信息
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Compact and simple configurations for converting laser beam distributions
Compact and simple configurations for converting laser beam ...
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Conference on Lasers and Electro-Optics Europe (CLEO EUROPE)
作者: G. Machavariani A.A. Ishaaya N. Davidson A.A. Friesem E. Hasman Department of Physics of Complex Systems Weizmann Institute of Science Rehovot Israel Optical Engineering Laboratory Faculty of Mechanical Engineering Technion-Israel Institute of Technology Haifa Israel
In this paper, we present a relatively simple and practical approach for efficiently conversing of a single high-order mode intensity distribution to a nearly Gaussian distribution. It is based on dividing the high-or... 详细信息
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Robust strictly positive real synthesis of polynomial segments for discrete time systems
Robust strictly positive real synthesis of polynomial segmen...
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IEEE Conference on Decision and Control
作者: Wensheng Yu Long Wang Yong Xiang Laboratory of Complex Systems and Intelligence Science Institute of Automation Chinese Academy and Sciences Beijing China Center for Systems and Control Department of Mechanics and Engineering Science Peking University Beijing China School of Engineering and Technology Deakin University Geelong VIC Australia
By using the result of robust strictly positive real synthesis of polynomial segments for continuous time systems, it is proved that, for any two n-th order polynomials a(z) and b(z), the Schur stability of their conv... 详细信息
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Human systems integration and advanced technology in engineering department workload and manpower reduction
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NAVAL ENGINEERS JOURNAL 2003年 第1期115卷 57-65页
作者: Lively, KA Seman, AJ Kirkpatrick, M KENNETH A. LIVELY graduated from the University of Colorado with a BS in applied mathematics and an MS in mathematics in 1976 and from the Massachusetts Institute of Technology with an MS in electrical engineering and the degree ocean engineer in naval architecture and marine engineering in 1984. He retired from the U.S. Navy in 1989 after 23 years of service. Assignments included electrical officer on the USS Constellation (CV 64) project engineer for the DDG 51 machinery control system (NAVSEA) and DDG 51 Technical Director (NAVSEA). He was vice president of the PDI Division of Bird-Johnson Company from July 1989 to November 1998 where he managed various gas turbine and machinery controls related development projects. He joined Anteon Corporation's Systems Engineering Group as senior controls engineer in December 1998 where he provided technical support to the integrated power systems program (NAVSEA PMS 510) and managed the Office of Naval Research Afloat Laboratory. DR. MARK KIRKPATRICK is currently an independent consultant in human factors and work-load/manning analysis and modeling. He holds a Ph.D. degree in experimental psychology from The Ohio State University and has 34 years of experience in applied human factors. From 1982 through 2000 Dr. Kirkpatrick served as the senior vice president of Carlow International. Prior to joining Carlow in 1982 Dr. Kirkpatrick served as a member of the technical staff at North American Rockwell's Missiles Division and as a project director and vice president for Essex Corporation. His areas of expertise include workload simulation task analysis operator-in-the-loop simulation human performance experimentation statistical analysis and human factors T&E. He has directed and/or participated in human factors projects for the U.S. Navy U.S. Army NASA Department of Transportation the U.S. Nuclear Regulatory Commission and private industry. ANTHONY J. SEMAN III is the technical manager for the reduced ship's crew by virtual presence (RSVP) advanced technology d
Aboard current ships, such as the DDG 51, engineering control and damage control activities are manpower intensive. It is anticipated that, for future combatants, the workload demand arising from operation of systems ... 详细信息
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High-order mode selection in q-switched Nd:YAG lasers
High-order mode selection in q-switched Nd:YAG lasers
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Conference on Lasers and Electro-Optics (CLEO 2002)
作者: Ishaaya, A.A. Davidson, N. Machavariani, G. Friesem, A.A. Hasman, E. Dept. of Physics of Complex Systems Weizmann Institute of Science Rehovot 76100 Israel Optical Engineering Laboratory Faculty of Mechanical Engineering Technion-Israel Inst. of Technology Haifa Israel
An efficient high-order mode selection in a Q-switched Nd:YAG laser was demonstrated using various intracavity phase elements. The laser consisted of a stable plano-concave resonator, a flashpump pumped 5 mm diameter ... 详细信息
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Efficient formation of pure helical beams from a Gaussian beam
Efficient formation of pure helical beams from a Gaussian be...
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Conference on Lasers and Electro-Optics (CLEO 2002)
作者: Machavariani, Galina Davidson, N. Friesem, A.A. Ishaaya, A.A. Blit, S. Hasman, E. Dept. of Physics of Complex Systems Weizmann Institute of Science Rehovot 76100 Israel Optical Engineering Laboratory Faculty of Mechanical Engineering Technion-Israel Inst. of Technology Haifa Israel
Formation of pure helical beams from a Gaussian beam using spiral phase elements (SPE) was studied. Beam quality factor M2 for helical beams, which were obtained by passing Gaussian and shifted-Gaussian beams through ... 详细信息
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Geometric fractal growth model for scale-free networks
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Physical Review E 2002年 第5期65卷 056101-056101页
作者: S. Jung S. Kim B. Kahng Nonlinear and Complex Systems Laboratory Department of Physics Pohang University of Science and Technology Pohang Kyongbuk 790-784 Korea School of Physics and Center for Theoretical Physics Seoul National University Seoul 151-747 Korea
We introduce a deterministic model for scale-free networks, whose degree distribution follows a power law with the exponent γ. At each time step, each vertex generates its offspring, whose number is proportional to t... 详细信息
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ROBUST CONGESTION CONTROL IN HIGH SPEED COMMUNICATION NETWORKS: A MODEL PREDICTIVE CONTROL APPROACH
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IFAC Proceedings Volumes 2002年 第1期35卷 103-108页
作者: Hua O. Wang Yongru Gu Huajing Fang Laboratory for Intelligent and Nonlinear Control (LINC) Department of Electrical and Computer Engineering Duke University Durham NC 27708-0291 USA Center for Nonlinear and Complex Systems Department of Control Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China
In this paper, the design of explicit rate-based congestion control in high speed communication networks is considered. At a bottleneck node, there are multiple best-effort sources competing with other high priority c... 详细信息
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