中国科学院机构知识库网格系统: 检索

Intact or impaired? The understanding of give-and-take interactions in children with autism spectrum disorder 期刊论文 OAI收割
RESEARCH IN DEVELOPMENTAL DISABILITIES, 2024, 卷号: 144, 页码: 12
作者: Hou, Wenwen; Li, Jing

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收藏 | 浏览/下载：28/0 | 提交时间：2024/01/22

Autism spectrum disorder (ASD) Give-and-take interaction Eye tracking Action prediction

Ionospheric correlation analysis and spatial threat model for SBAS in China region 期刊论文 OAI收割
Advances in Space Research, 2020
作者: Jin, Biao; Chen, Shanshan; Li, Dongjun; Takka, Elhadi; Li, Zishen

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收藏 | 浏览/下载：34/0 | 提交时间：2020/06/15

SBAS GIVE Ionospheric correlation Undersampled threat model

A New Set of Parameters of High-Mass X-ray Binaries Found with their Cyclotron Lines 期刊论文 OAI收割
arXiv e-prints, 2018
作者: Zhang, Chengmin; Taani, Ali; Chaty, Sylvain; Karino, Shigeyuki; Song, Liming

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收藏 | 浏览/下载：75/0 | 提交时间：2019/07/12

Astrophysics - High Energy Astrophysical Phenomena Abstract: We have derived new physical quantities for several High-Mass X-ray Binaries (HMXBs) with supergiant (SG) companions through their cyclotron lines. The parameters are: the terminal velocity of the wind, the mass loss rate of the donor, the effective temperature and the magnetic fields. These parameters influence significantly the improvement of the model of accretion. In spite of the variety of their observational properties, the corresponding magnetic field is around B ~ 10^12 G. This result can be constrained by the effects on stellar evolution. In addition, we have performed a segmentation in the parameter space of donors intended for several SG-HMXB listed in our sample set. The parameter space can be categorized into five regimes depending on the possibility of disk formation associated with accretion from the stellar wind. This can give a quantitative clarification of the observed variability and the properties of these objects. We show that, when these systems come into the direct accretion region, systems with corresponding parameters can emit X-rays.

An accuracy requirement analysis for LED brightness and color correction system (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Transportation, Mechanical, and Electrical Engineering, TMEE 2011, December 16, 2011 - December 18, 2011, Changchun, China
作者: Wang R.

收藏 | 浏览/下载：63/0 | 提交时间：2013/03/25

Brightness and color correction system is working for the color uniform problem of LED display. The correction system can improve LED display's quality greatly. The accuracy of the LED system must consider the accuracy requirements of the color correction system. This paper analyze the accuracy requirements from two aspects. One is that the accuracy requirements should consider the chromatic tolerance for the human eyes the other one is that the accuracy requirements should be associated with the precision of measuring equipment. This paper discuss the accuracy requirement with the CIE1976LUV as a color space to meet the chromatic tolerance of the human eyes and also give an explanation on how the accuracy of the measuring equipment affect the the correction system. Then this paper give a method to ensure the accuracy requirement for the correction system of a LED display. 2011 IEEE.

The application of MATLAB/ embedded IDE Link CC in the design of DSP system (EI CONFERENCE) 会议论文 OAI收割
2011 4th International Conference on Intelligent Computation Technology and Automation, ICICTA 2011, March 28, 2011 - March 29, 2011, Shenzhen, Guangdong, China
Le S.; Shu-Mei Z.; Xin L.

收藏 | 浏览/下载：33/0 | 提交时间：2013/03/25

In the development of new digital signal processing algorithms Designers always use matlab simulation when the simulation results achieve the expected target then chang the algorithms into C/C++ languages and debug on hardware DSP. There are some results of deviation because of design precision etc. Such a repeated process of revising all will give developers inconvenience. This article takes designing FIR filter as an example to introduce method which use Embedded IDE LinkTM CC tool in Matlab7.6 environment to Debug TMS320F2812 DSP board. 2011 IEEE.

Multi-parameters decoupling method with Lamb wave sensor for improving the selectivity of label-free liquid detection (EI CONFERENCE) 会议论文 OAI收割
2011 16th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS'11, June 5, 2011 - June 9, 2011, Beijing, China
作者: Zhou L.

收藏 | 浏览/下载：24/0 | 提交时间：2013/03/25

The anti-symmetric modes (A01 mode for low frequency A 03 mode for high frequency) and symmetric modes (S0 mode) produced by Lamb wave sensor are used to detect multi-parameters of a liquid such as its density sound velocity and viscosity. These modes are found to be very different to the parameters. For example the A01 mode is very sensitive to the liquid's density but the A03 mode is sensitive to its sound velocity. The measurements of the attenuation with S0 mode can give out liquid's viscosity after its density been determined by A 01 mode. That could be a way to distinguish an unknown liquid with high sensitivity or to solve the problem of the selectivity of label free detection on biosensors. 2011 IEEE.

Adaptive Wiener filtering with Gaussian fitted point spread function in image restoration (EI CONFERENCE) 会议论文 OAI收割
2011 IEEE 2nd International Conference on Software Engineering and Service Science, ICSESS 2011, July 15, 2011 - July 17, 2011, Beijing, China
作者: Yang L.; Zhang X.; Zhang X.; Zhang X.; Yang L.

收藏 | 浏览/下载：44/0 | 提交时间：2013/03/25

In the imaging process of the space remote sensing camera there was degradation phenomenon in the acquired images. In order to reduce the image blur caused by the degradation the remote sensing images were restored to give prominence to the characteristic objects in the images. First the frequency-domain notch filter was adopted to remove strip noises in the images. Then using the ground characters with the knife-edge shape in the images the point spread function of the imaging system was estimated. In order to improve the accuracy the estimated point spread function was corrected with Gaussian fitting method. Finally the images were restored using the adaptive Wiener filtering with the fitted point spread function. Experimental results of the real remote sensing images showed that almost all strip noises in the images were eliminated. After the denoised images were restored its variance and its gray mean gradient increased also its laplacian gradient increased. Restoration with Gaussian fitted point spread function is beneficial to interpreting and analyzing the remote sensing images. After restoration the blur phenomenon of the images is reduced. The characters are highlighted and the visual effect of the images is clearer. 2011 IEEE.

Roughness analysis of optical surfaces by X-ray scattering (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Electronics and Optoelectronics, ICEOE 2011, July 29, 2011 - July 31, 2011, Dalian, China
作者: Chen B.; Chen B.

收藏 | 浏览/下载：25/0 | 提交时间：2013/03/25

A grazing incidence x-ray scattering (XRS) method Order perturbation theory (FOPT) is stated briefly and an experimental facility based on an improved X-ray diffraction has been introduced which can work with high performance. The x-ray scattering distributions of two super smooth silicon samples measured at the incidence angle 0.2 degree as the x-ray wavelength is 0.154 nm have been given and analyzed by the FOPT to give information about the surface profiles. As a comparison the root mean square (RMS) surface roughness grey-scale maps and one-dimensional power spectral density (1D PSD) have been derived from the atomic-force microscope (AFM) data. The results evaluated by FOPT are in good agreement with that of AFM which indicates that x-ray scattering method is a practical characterization for the investigation of super smooth surfaces. 2011 IEEE.

Astronomical image restoration through atmosphere turbulence by lucky imaging (EI CONFERENCE) 会议论文 OAI收割
3rd International Conference on Digital Image Processing, ICDIP 2011, April 15, 2011 - April 17, 2011, Chengdu, China
作者: Zhao J.; Wang J.; Zhang S.

收藏 | 浏览/下载：27/0 | 提交时间：2013/03/25

In this paper we develop a lucky imaging system to restore astronomical images through atmosphere turbulence. Our system takes very short exposures on the order of the atmospheric coherence time. The rapidly changing turbulence leads to a very variable point spread function (PSF) and the variability of the PSF leads to some frames having better quality than the rest. Only the best frames are selected aligned and co-added to give a final image with much improved angular resolution. Our system mainly consists of five parts: preprocessing frame selection image registration image reconstruction and image enhancement. Our lucky imaging system has been successfully applied to restore the astronomical images taken by a 1.23m telescope. We have got clear images of moon surface and Jupiter and our system can be demonstrated to greatly improve the imaging resolution through atmospheric turbulence. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

The imaging system design of three-line LMCCD mapping camera (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
作者: Zhao Y.; Yu D.; Yu D.; Zhao Y.; Zhao Y.

收藏 | 浏览/下载：17/0 | 提交时间：2013/03/25

In this paper the SNR tested in laboratory is better than 95 under typical working condition(the solar incidence degree is 30 the temperature of the focal plane module is controlled under 30 in a working period of 15 minutes. All of these results can satisfy the requirements about the synchronous photography the authors introduced the theory about LMCCD (line-matrix CCD) mapping camera firstly. On top of the introduction were consists of the imaging system of LMCCD mapping camera. Secondly the photography interval of line-matrix CCD of the nadir camera can satisfy the butter requirements of LMCCD focal plane module the reflectivity of the earth's surface is 0.3) of each CCD image the temperature control of focal plane module and SNR some pivotal designs which were Introduced about the imaging system Which give the guarantee of precision for satellite photogrammetry. 2011 SPIE. such as the design of focal plane module the video signal's procession the controller's design of the imaging system synchronous photography about forward and nadir and backward camera and the nadir camera of line-matrix CCD. At last the test results of LMCCD mapping camera imaging system were introduced. The results as following: the precision of synchronous photography about forward and nadir and backward camera is better than 4 ns and the nadir camera of line-matrix CCD is better than 4 ns too