中国科学院机构知识库网格系统: 检索

Thermocapillary Convection Space Experiment on the SJ-10 Recoverable Satellite 期刊论文 OAI收割
JOVE-JOURNAL OF VISUALIZED EXPERIMENTS, 2020, 期号: 157, 页码: 8
作者: Duan L(段俐); Yin YL; Wang J(王佳); Kang Q(康琦); Wu D(吴笛)

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收藏 | 浏览/下载：27/0 | 提交时间：2020/05/18

Engineering Issue 157 microgravity experiments payload design annular liquid pool thermocapillary convection oscillation wave transitions

Probing the primordial universe with gravitational waves detectors 期刊论文 OAI收割
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2017, 期号: 1, 页码: 10
作者: Wang, YT; Cai, Y; Liu, ZG; Piao, YS; Wang, YT (reprint author), Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China.

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收藏 | 浏览/下载：22/0 | 提交时间：2017/12/21

Gravitational Waves / Experiments Primordial Gravitational Waves (Theory) Graitational Wave Detectors Modified Gravity

Reconstructing the dark sector interaction with LISA 期刊论文 OAI收割
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2017, 期号: 5, 页码: 31
作者: Tamanini, N; Cai, RG; Yang, T; Cai, RG (reprint author), Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, POB 2735, Beijing 100190, Peoples R China.; Cai, RG (reprint author), Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China.

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收藏 | 浏览/下载：31/0 | 提交时间：2017/12/21

Dark Energy Theory Gravitational Wave Detectors Gravitational Waves / Experiments Supernova Type Ia Standard Candles

Possible associated signal with gw150914 in the ligo data 期刊论文 iSwitch采集
Journal of cosmology and astroparticle physics, 2016, 期号: 10, 页码: 9
作者: Liu, Hao; Jackson, Andrew D.

收藏 | 浏览/下载：20/0 | 提交时间：2019/04/23

Gravitational wave detectors Gravitational waves / experiments

Understanding the LIGO GW150914 event 期刊论文 OAI收割
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2016, 期号: 8
作者: Liu, H; Naselsky, P; Jackson, AD; Liu H(刘浩)

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收藏 | 浏览/下载：18/0 | 提交时间：2017/07/27

gravitational wave detectors gravitational waves / experiments

Shock pressure induced by glass-confined laser shock peening: Experiments, modeling and simulation 会议论文 OAI收割
9th Workshop on Piezoresponse Force Microscopy (PFM)/10th International Symposium on Ferroic Domains, Prague, CZECH REPUBLIC, SEP 22-24, 2010
作者: Wu XQ(吴先前); Duan ZP(段祝平); Song HW(宋宏伟); Wei YP(魏延鹏); Wang X(王曦)

收藏 | 浏览/下载：191/0 | 提交时间：2013/02/26

Doppler effect Dynamic response Glass Glass lasers Velocimeters Velocity control Velocity measurement Analytical model Diagnostic capabilities Empirical formulas Exponential decays Free surface velocity Free surfaces Laser shock peening LS-DYNA Particle velocities Photonic doppler velocimetry Plasma pressures Shock pressure Short time scale Stress wave Target materials Temporal profile WAVE EXPERIMENTS STRESS WAVES PLASMA GENERATION ALUMINUM GEOMETRY ALLOYS METALS

The Research of real time auto-recognition of the moire fringe (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Wang M.-J.; Wu Z.-G.

收藏 | 浏览/下载：18/0 | 提交时间：2013/03/25

Measuring the movement of raster by the method of moire fringe has the advantage of high sensitivity high resolution and non-contacted measurement. The characteristic of moire fringe is that the image is white alternate with black the angle of the stripes is uniform the width of the stripes is uniform the terminators of the stripes aren't clear. A fast method that can figure out the width and angle of the moire fringe precisely is put forward in this paper. It calculates the angle the stripes firstly. According to the principle of the minimum mean squared error (MMSE) the closer a series of data is the smaller the value of the MMSE will be. The method is described as follows: It takes the image's center as the origin 180 beelines pass through the origin with the same angle interval. it calculates the value of the minimum mean squared error of the 180 beelines and find out the least one among those then the angle of the moire fringe comes out primarily. In order to improving the calculating precision of moire fringe 60 equal angles are divided in the neighborhood of the angle then a precise angle of moire fringe is calculated according to the principle of the MMSE. After getting out the angle of the moire fringe we begin to calculate the width of moire fringe. A line vertical with the moire fringe is drawn and we can get the width of the moire fringe by the vertical line. In order to get over the influence of the noise an effective area with the shape of diamond is selected in the image. The data of area is accumulated and projected according to the direction of moire fringe and a sine curve come out. The width of moire fringe can be obtained by getting the position of the first wave crest the position of the last wave crest and the number of wave crest. Experiments prove that the precision of the method put forward in this paper is enhanced in comparison with the traditional frequency method the precision of width calculation achieves to 99.6% according to the evaluation indicators of width detection error. The computing speed is boosted largely compared with traditional method and it can achieve with 15 ms that satisfying the demand of real time. 2011 SPIE.

Shock pressure induced by glass-confined laser shock peening: Experiments, modeling and simulation 期刊论文 OAI收割
Journal of Applied Physics, 2011, 卷号: 110, 期号: 5, 页码: 53112
作者: Wu XQ(吴先前); Duan ZP(段祝平); Song HW(宋宏伟); Wei YP(魏延鹏); Wang X(王曦)

收藏 | 浏览/下载：37/0 | 提交时间：2012/04/01

Wave Experiments Stress Waves Plasma Generation Aluminum Geometry Alloys Metals

A study on the effect of wheat row-structure on Microwave emissivity using field experiment data 会议论文 OAI收割
2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011,, Vancouver, BC, Canada, July 24, 2011 - July 29,2011
Li, Yunqing; Zhang, Lixin; Jiang, Lingmei; Chai, Linna; Zhang, Tao

收藏 | 浏览/下载：13/0 | 提交时间：2014/12/07

Microwaves Electromagnetic wave emission Experiments Geology Microwave devices Microwave measurement Radiometers Radiometry Remote sensing Sensitivity analysis Soil moisture Trucks

Study of three-mode parametric instability (EI CONFERENCE) 会议论文 OAI收割
8th Edoardo Amaldi Conference on Gravitational Waves, June 21, 2009 - June 26, 2009, New York, NY, United states
Liang F.; Zhao C.; Gras S.; Ju L.; Blair G.

收藏 | 浏览/下载：21/0 | 提交时间：2013/03/25

The effect of parametric instability in advanced interferometric gravitational wave detectors is a potential problem for their proper operation. Great efforts have been made to study the onset of parametric instabilities and to find ways to control them. Here we present an experimental design for studying parametric instability in a 72 m cavity with suspended high quality fused silica mirrors. With 5 W input power and 20 kW circulation power inside the cavity it is predicted that parametric instability will occur. The resonant condition of parametric instability can be met by thermally tuning the radius of curvature of a test mass. We will present simulation results of parametric gains for different radii of curvature of a test mass. The simulation results will provide the basis for designing the thermal tuning and observation parametric instability experiments. This will provide a test bed for studying parametric instability and its control for next generation detectors. 2010 IOP Publishing Ltd.