中国科学院机构知识库网格系统: 检索

8-9.5 keV正电子致Ti的K壳层电离截面的实验研究 期刊论文 OAI收割
物理学报, 2018, 卷号: 67, 期号: 19, 页码: 192101
作者: Qian, Yu-Rui; Wu, Ying; Yang, Xia-Tong; Chen, Qiu-Xiang; You, Jun-Dong

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收藏 | 浏览/下载：40/0 | 提交时间：2019/10/11

positron collisions purely thick Ti target Ti K shell ionization Monte Carlo simulation distorted-wave Born approximation model

Association between common carotid artery diameter and target organ damage in essential hypertension 期刊论文 OAI收割
JOURNAL OF HYPERTENSION, 2018, 卷号: 36, 期号: 3, 页码: 537-543
作者: Yang, Yan; Wang, Yan; Xu, Jianzhong; Gao, Pingjin; Gao, Pingjin

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收藏 | 浏览/下载：25/0 | 提交时间：2020/12/09

carotid intima-media thickness common carotid artery diameter essential hypertension left ventricular mass index pulse wave velocity target organ damage urinary albumin/creatinine ratio

Multi-target detection method based on variable carrier frequency chirp sequence 期刊论文 OAI收割
SENSORS, 2018, 卷号: 18, 期号: 10, 页码: 1-12
作者: Wang W(王伟); Du JS(杜劲松); Gao J(高洁)

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收藏 | 浏览/下载：71/0 | 提交时间：2018/11/09

Multi-target Detection Continuous Wave Radar Systems Variable Carrier Frequency Chirp Sequence Doppler Ambiguity

3-d imaging for moving targets based on millimeter-wave inisar with long orthogonal baselines 期刊论文 iSwitch采集
Journal of infrared and millimeter waves, 2016, 卷号: 35, 期号: 4, 页码: 488-495
作者: Ma Meng; Li Dao-Jing; Li Lie-Chen; Du Jian-Bo; Qiao Ming

收藏 | 浏览/下载：36/0 | 提交时间：2019/05/09

Millimeter-wave radar Interferometric inverse synthetic aperture radar (inisar) Moving target imaging Phase unwrapping Three-dimensional(3-d) imaging

Urban Land Use Information Extraction Using the Ultrahigh-Resolution Chinese Airborne SAR Imagery 期刊论文 OAI收割
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2015, 卷号: 53, 期号: 10, 页码: 457-466
作者: Wu, Wenjin; Guo, Huadong; Li, Xinwu; Ferro-Famil, Laurent; Zhang, Lu

收藏 | 浏览/下载：44/0 | 提交时间：2016/04/20

Millimeter-wave (MMW) radar synthetic aperture radar (SAR) target identification urban areas

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：193/0 | 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 for missile bullets' multiple targets of opto-electronic theodolites (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
Wei Z.; Liu Y.-H.

收藏 | 浏览/下载：44/0 | 提交时间：2013/03/25

The system of opto-electronic theodolites for measuring missile bullet provides parameter of missile bullet trajectory and affords primacy scientific data for completing campaign assign and obtaining ideal result of destroy. This article researches extraction arithmetic for missile bullet' multiple targets. Above all enactment threshold of area acquire middle axes of target by adopting Hough transforming and approximating and calculate obliquity angles of targets. In course of matching accomplish missile bullet's multiple targets data association of serial images by making use of improving eigenfunction and achieve extraction of missile bullet's multiple targets after obtaining center position of targets adopting OSTU method change numeral image into binary image according to area of target forecast searching region of target matching by using Kalman filter area of targets and abstract separately center position of targets and area of targets judge conglutination and obstruct then separate targets in term of wave crest and trough's variety of grey histogram of conglutination region grey average of target and obliquity angles of targets. The experimental result shows that right ratio of the extraction targets reach to 90%. The article use correct mathematical model and reasonable arithmetic and obtain effectively parameter of missile bullet' multiple targets. 2010 IEEE. at the same time obtain grey average of target mark target region

1D-KBA microscope using double-periodic multilayer (EI CONFERENCE) 会议论文 OAI收割
Advances in X-Ray/EUV Optics and Components IV, August 3, 2009 - August 5, 2009, San Diego, CA, United states
作者: Wang Z.; Wang X.; Wang X.; Wang X.; Wang Z.

收藏 | 浏览/下载：12/0 | 提交时间：2013/03/25

To study the action of shock wave in CH target one-dimensional grazing incidence KBA microscope for 4.75keV energy was set up. Because of strong absorption in air 4.75keV energy microscope can just work in vacuum. Accordingly the alignment and assemblage will be very complicated and difficult. A special multilayer method using double periodic multilayer was proposed to solve this problem. This multilayer has high reflectivity not only for 4.75keV X-rays but also for 8keV X-rays at the same grazing incidence angle. It means 1D-KBA microscope has the same light trace for different working energies. Therefore we can implement the alignment and assembly of 4.75keV system by the help of 8keV X-rays. Because 8keV X-rays is very easy produced by X-ray tube and has strong transmittability in air the alignment and assemblage process became relatively easy. By now we have finished the alignment experiment at 8keV and obtained imaging results. The performance is about 2-3m resolution in 250m field of view. It is coincide with the calculation. 2009 SPIE.

Athermal design of hybrid refractive/harmonic diffractive optical system for far-infrared multi-band (EI CONFERENCE) 会议论文 OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, November 19, 2008 - November 21, 2008, Chengdu, China
作者: Liu Y.; Liu Y.; Zhang H.; Zhang H.; Sun Q.

收藏 | 浏览/下载：33/0 | 提交时间：2013/03/25

In order to get enough information about the target avoid big chromatic aberration as a result of wide spectrum and the complexity of optical system and adapt different special environment temperature a hybrid refractive/harmonic diffractive optical system in far-infrared multi-band is described in the paper. This diffractive optical system has been designed an athermalized multi-band imaging system with harmonic diffractive element in 15-50m spectrum based on larger 1dispersion capability and particular thermal dispersive power of harmonic diffractive element. Then at the temperature range from 0C to 40C this design can simultaneously meet with all requirements of the imaging system in five harmonic wave bands including15.8-16.2m 18.5-20m 23-25m 30.5-33.5m and 46-50m. In each harmonic wave band the magnification changes as a function of wavelength which creates image registration error. To compensate this shortcoming a zoom optical system is designed with three lenses by means of optical two- component method. The design results show that the hybrid refractive/harmonic diffractive optical system can realize athermalized and achromatic design and the zoom optical system makes half image height at 3.53mm in every harmonic wave band and still realizes aberration compensation action. In the five harmonic wave bands each optical transfer function approaches the diffraction limit at ambient temperature range of 0C to 40C. Finally the system realizes the requirements of portability mini-type and ease for fabrication. 2009 SPIE.

lightweight particle filters based localization algorithm for mobile sensor networks 会议论文 OAI收割
2nd International Conference on Sensor Technologies and Applications, SENSORCOMM 2008, Cap Esterel, France, August 25,
Li An; Sun Limin; Liu Yan; Ma Jian

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收藏 | 浏览/下载：23/0 | 提交时间：2011/06/13

Air filters Algorithms Bayesian networks Distributed computer systems Monte Carlo methods Nonlinear filtering Parameter estimation Sensors Signal filtering and prediction Target tracking Wave filters Wireless networks Wireless sen