中国科学院机构知识库网格系统: 检索

Design of the Cooling Water System Upgrade for 42 T Resistive Magnet at the CHMFL 期刊论文 OAI收割
JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS, 2024, 卷号: 16
作者: Tang, Jiali; Fang, Ming; Zhou, Chenfei; Zhou, Peng

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收藏 | 浏览/下载：6/0 | 提交时间：2024/11/20

resistive magnet cooling water system upgrade design energy systems experimental techniques heat exchangers heat pipes

Real-time Closed-loop Active Surface Technology of a Large Radio Telescope 期刊论文 OAI收割
Publications of the Astronomical Society of the Pacific, 2022, 卷号: 134, 期号: 1031, 页码: 015003-1-16
作者: Zhang Y(张勇); Li GP(李国平); Zhou GH(周国华); Lu QS(陆启帅); Zuo H(左恒)

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收藏 | 浏览/下载：22/0 | 提交时间：2023/03/17

Astronomical instrumentation Astronomical techniques Ground telescopes Radio telescopes Experimental techniques Astronomical optics

Vacuum sintering behavior and magnetic transformation for high-Ti type basalt simulated lunar regolith 期刊论文 OAI收割
ICARUS, 2020, 卷号: 347, 页码: 8
作者: Song, Lei; Xu, Jiao; Tang, Hong; Liu, Jiquan; Liu, Jianzhong

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收藏 | 浏览/下载：29/0 | 提交时间：2020/08/24

Moon, surface Regoliths Experimental techniques Mineralogy

Retrieval of snow depth in Northeast China using FY-3B/MWRI passive microwave remote sensing data (EI CONFERENCE) 会议论文 OAI收割
Satellite Data Compression, Communications, and Processing VIII, August 12, 2012 - August 13, 2012, San Diego, CA, United states
Ren R.; Gu L.; Chen H.; Cao J.

收藏 | 浏览/下载：138/0 | 提交时间：2013/03/25

Comparing with optical remote sensing techniques passive remote sensing data have been proved to be effective for observing snowpack parameters such as snow depth and snow water equivalent which can penetrate snowpack without clouds interferences. The Microwave Radiation Imager (MWRI) loaded on the Chinese FengYun-3B (FY-3B) satellite is gradually used in the global environment research through November 2011. In this paper we proposed a snow depth retrieval algorithm to estimate snow depth in Northeast China using MWRI passive microwave remote sensing data. A decision tree method of snow identification was firstly designed to distinguish different snow cover conditions in order to eliminate other interference signals. After using the proposed decision tree method the processing results were further used to retrieve the snow depth in Northeast China. Finally the practical snow depth data and the MODIS data were collected for the accuracy assessment of the proposed snow depth retrieval method. The experimental results demonstrated that the RMSE of snow depth used the proposed method was approximately 3 cm in Northeast China. 2012 SPIE.

LED display image correction based on computer simulation (EI CONFERENCE) 会议论文 OAI收割
2012 International Applied Mechanics, Mechatronics Automation Symposium, IAMMAS 2012, September 7, 2012 - September 9, 2012, Shenyang, Liaoning, China
Zheng X.-F.; Chang F.

收藏 | 浏览/下载：26/0 | 提交时间：2013/03/25

For the purposes of correcting the LED display image a method based on computer simulation is proposed. First the development of the LED display panel is introduced. Second analyze the causes of the problem which image in LED display panel has serious high nonuniformity and introduce the existed correction techniques which are used to reduce the nonuniformity of LED display image. Simultaneously point out the ground for shortcomings of these techniques. Third describe the principle of correction method based on computer simulation detail from two steps which are the luminous collection and luminous copulation. Forth describe the realization steps of this method in accordance with the third step. Finally this method is supplied in a LED display panel whose resolution is 640480. Experimental results show that this method is able to reduce the non-uniformity of images from 11.06% to 0.98%. (2012) Trans Tech Publications Switzerland.

Design of a miniature axial flux flywheel motor with PCB winding for nanosatellites (EI CONFERENCE) 会议论文 OAI收割
2012 International Conference on Optoelectronics and Microelectronics, ICOM 2012, August 23, 2012 - August 25, 2012, Changchun, China
Wu J.

收藏 | 浏览/下载：41/0 | 提交时间：2013/03/25

This paper presents the design and analysis of an axial flux permanent-magnet (AFPM) machine for nanosatellites application. It is a miniature axial flux surface mounted permanent magnet flywheel motor using a printed circuit board (PCB) stator winding. The PCB stator has simplified the design and construction and avoids unnecessary space since size reduction has become one of the most important aspects of flywheel motor design for nanosatellites. The performances of the machine are estimated by combination method of three-dimensional (3D) electromagnetic finite element analysis (FEA) and approximate theoretical analysis. The back EMF and electromagnetic torque are derived. A comparison between the analysis and experimental measurement results of the prototype machine is also presented. Both simulated and experimental results show that the proposed motor would be an acceptable solution for the nanosatellite applications with advantages such as simple structure and low-cost as multi-layer circuit board production techniques have made the production of printed circuit coils cheaper and easier. 2012 IEEE.

Multi-scale edge extraction based stereo matching algorithm (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Frontiers of Manufacturing and Design Science, ICFMD2010, December 11, 2010 - December 12, 2010, Chongqing, China
作者: Li L.

收藏 | 浏览/下载：14/0 | 提交时间：2013/03/25

In the field of robot vision edge feature based stereo matching algorithm can reconstruct the targets with clear contours which needs accurate and continuous target edges been extracted. In the paper the smoothing filter operator was designed based on the discrete criteria of edge extraction and its correspondence optimal linear filter. Edge extraction was carried out incorporated the nonmaximum suppression and two thresholds techniques. The discrete criteria based multi-scale edge extraction method was studied with full use of the multi-scale character of the edge information. The detected multi-scale edges were synthesized to obtain the accurate and continuous single pixel wide edge. Then an edge feature based stereo matching algorithm was proposed to obtain 3D information of target. The experimental results demonstrate that the method can effectively suppress disturbance in outdoor environment and reconstruct target contour clearly. (2011) Trans Tech Publications.

Advances in Experiments and Modeling in Micro- and Nano-Biomechanics: A Mini Review 期刊论文 OAI收割
Cellular and Molecular Bioengineering, 2011, 卷号: 4, 期号: 3, 页码: 327-339
作者: Long M(龙勉); Sato M; Lim CT

收藏 | 浏览/下载：33/0 | 提交时间：2012/04/01

Cellular Mechanics Molecular Biomechanics Experimental Techniques Theoretical Modeling Computations Fluid Shear-Stress Endothelial-Cell Proliferation Adhesive Dynamics Simulation Ligand Binding-Kinetics Glycoprotein-Ib-Alpha Von-Willebrand-Factor Molecular-Dynamics Mechanical-Stress Beta-Switch 2-Dimensional Kinetics

Speech signal enhancement through wavelet domain MMSE filtering (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Fenghua Z.; Le Y.; Jian W.; Qiang S.

收藏 | 浏览/下载：26/0 | 提交时间：2013/03/25

A new speech enhancement system that combine robust signal enhancement and minimum signal distortion is proposed in this paper. The proposed method introduces frequency depended parametric MMSE filtering techniques that involve wavelet packets. Voice activity detection (VAD) is used to further distinguish speech from noise and help to adaptively remove noise components from color noise eruptive noisy speech while perceptual criteria is also taken into account. Experimental results and objective quality measurement test results validate the proposed speech enhancement system and illustrate the benefit of the proposed wavelet domain MMSE filtering as an excellent speech enhancement method to provide sufficient noise reduction and good intelligibility and perceptual quality without causing considerable signal distortion and musical background noise method. 2010 IEEE.

The magnetic structure of an earthward-moving flux rope observed by cluster in the near-tail 期刊论文 iSwitch采集
Annales geophysicae, 2007, 卷号: 25, 期号: 7, 页码: 1471-1476
作者: Zhang, Y. C.; Liu, Z. X.; Shen, C.; Fazakerley, A.; Dunlop, M.

收藏 | 浏览/下载：46/0 | 提交时间：2019/05/10

Magnetospheric physics Magnetotail Plasma sheet Space plasma physics Experimental and mathematical techniques Magnetic reconnection