中国科学院机构知识库网格系统: 检索

Selected Science Opportunities for the EicC 期刊论文 OAI收割
FEW-BODY SYSTEMS, 2020, 卷号: 61, 期号: 4, 页码: 43
作者: Chen, Xurong; Guo, Feng-Kun; Roberts, Craig D.; Wang, Rong

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收藏 | 浏览/下载：36/0 | 提交时间：2021/09/27

LEADING NEUTRON-PRODUCTION HIDDEN-CHARM PENTAQUARK RELATIVIZED QUARK-MODEL BACKGROUND FIELD METHOD DRELL-YAN ASYMPTOTIC FREEDOM ALPHA-PARTICLES LIGHT-ATOMS EXCLUSIVE PHOTOPRODUCTION PARTON DISTRIBUTIONS

First performance test of a 30mm iron-based superconductor single pancake coil under a 24T background field 期刊论文 OAI收割
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2019, 卷号: 32, 期号: 4, 页码: 5
作者: Wang, Dongliang; Zhang, Zhan; Zhang, Xianping; Jiang, Donghui; Dong, Chiheng

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收藏 | 浏览/下载：25/0 | 提交时间：2020/07/14

iron-based superconductor single pancake coil high background field transport performance wind-and-react method

First performance test of a 30 mm iron-based superconductor single pancake coil under a 24 t background field 期刊论文 iSwitch采集
Superconductor science and technology, 2019, 卷号: 32, 期号: 4
作者: Wang,Dongliang; Zhang,Zhan; Zhang,Xianping; Jiang,Donghui; Dong,Chiheng

收藏 | 浏览/下载：75/0 | 提交时间：2019/04/23

Iron-based superconductor Single pancake coil High background field Transport performance Wind-and-react method

Research on infrared dim-point target detection and tracking under sea-sky-line complex background (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, May 24, 2011 - May 24, 2011, Beijing, China
作者: Dong Y.-X.; Zhang H.-B.; Li Y.; Li Y.; Li Y.

收藏 | 浏览/下载：111/0 | 提交时间：2013/03/25

Target detection and tracking technology in infrared image is an important part of modern military defense system. Infrared dim-point targets detection and recognition under complex background is a difficulty and important strategic value and challenging research topic. The main objects that carrier-borne infrared vigilance system detected are sea-skimming aircrafts and missiles. Due to the characteristics of wide field of view of vigilance system the target is usually under the sea clutter. Detection and recognition of the target will be taken great difficulties.There are some traditional point target detection algorithms such as adaptive background prediction detecting method. When background has dispersion-decreasing structure the traditional target detection algorithms would be more useful. But when the background has large gray gradient such as sea-sky-line sea waves etc.The bigger false-alarm rate will be taken in these local area.It could not obtain satisfactory results. Because dim-point target itself does not have obvious geometry or texture feature in our opinion from the perspective of mathematics the detection of dim-point targets in image is about singular function analysis.And from the perspective image processing analysis the judgment of isolated singularity in the image is key problem. The foregoing points for dim-point targets detection its essence is a separation of target and background of different singularity characteristics.The image from infrared sensor usually accompanied by different kinds of noise. These external noises could be caused by the complicated background or from the sensor itself. The noise might affect target detection and tracking. Therefore the purpose of the image preprocessing is to reduce the effects from noise also to raise the SNR of image and to increase the contrast of target and background. According to the low sea-skimming infrared flying small target characteristics the median filter is used to eliminate noise improve signal-to-noise ratio then the multi-point multi-storey vertical Sobel algorithm will be used to detect the sea-sky-line so that we can segment sea and sky in the image. Finally using centroid tracking method to capture and trace target. This method has been successfully used to trace target under the sea-sky complex background. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

The movement estimation of target and background by fourier phase spectrum difference (EI CONFERENCE) 会议论文 OAI收割
2010 6th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2010, September 23, 2010 - September 25, 2010, Chengdu, China
作者: Zhang X.; Zhang X.; Zhang X.; Wang J.; Zhang S.

收藏 | 浏览/下载：19/0 | 提交时间：2013/03/25

An algorithm for estimating displacement of the moving target and background by shift theory of Fourier transform is presented. According to the relation between the change and the Fourier transform of image sequence the method employs the displacement value of the moving target and background by the difference of Fourier phase spectrum. The algorithm estimates the movements from the whole field of the image with excellent global property. This paper provides the calculus and experiments of the algorithm which show the accuracy of 1 pixel. 2010 IEEE.

Small aircraft CAN bus signal acquisition equipment (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
Chen C.-Q.

收藏 | 浏览/下载：29/0 | 提交时间：2013/03/25

Small aircraft often used RS485 bus. But with the complexity of the small aircraft's subsystems increase and the progress of field bus technology CAN bus systems in small aircraft use more and more widely. How to record real-time flight experiment data on the small aircraft's CAN bus and provide test data for reproducing the process of a small aircraft flying is very important. This paper presents a design method of signal acquisition device it can be used for small aircraft flying field experiment. 2010 IEEE. as the main chip with DSP2812 SJA1000 as CAN controller CTM1050 as the CAN transceiver CF card as storage media. Gives the diagram of its hardware and software design process. Combined with the background of a small aircraft testing the instrument for data acquisition when the ground experiments and flight progress. Experimental data show that the design of high reliability and CAN signals can effectively complete the record

Scene matching based on directional keylines and polar transform (EI CONFERENCE) 会议论文 OAI收割
2010 IEEE 10th International Conference on Signal Processing, ICSP2010, October 24, 2010 - October 28, 2010, Beijing, China
作者: Wang Y.; Wang Y.; Wang Y.; Wang Y.; Wang Y.

收藏 | 浏览/下载：24/0 | 提交时间：2013/03/25

Scene matching under complex background is a priority and difficulty in the field of computer vision it has the characteristics of rotation and scaling invariance commonly used in matching real-time collected images and photos for navigation. Scene matching techniques are faced with complex natural scenes anti-light and anti-slight-distortion the image distortion exist applicable for complex scene matching. The project has a new idea: combining the keylines with the vectors description based on polar image translation such as light and utilize the rotation-scale-invariance vectors to describe the extracted keylines change of gray levels this method includes three steps: keylines extraction perspective description and matching. Preliminary experiments show that this keylines-based scene matching algorithm is applicable for image matching under complex background. 2010 IEEE. scaling and other differences which cause matching difficult. This paper aims to find a scene matching algorithm

A nonlinear image enhancement algorithm based on partial differential equations (EI CONFERENCE) 会议论文 OAI收割
2010 IEEE 10th International Conference on Signal Processing, ICSP2010, October 24, 2010 - October 28, 2010, Beijing, China
Han X.; Jian Z.

收藏 | 浏览/下载：22/0 | 提交时间：2013/03/25

Image enhancement and image de-noising have being the important research contents of image academic and engineering field and the partial differential equations have been widely applied to computer vision. The paper applies the thoughts of partial differential equations puts forward a new improved method of image enhancement. This method can enhance not only the dark images but also the bright images making the details hidden in the dark background and the bright background very clear. The application scope is wider and the visual effect is better. This paper uses the finite difference method to discrete the partial differential equations and combines with the heat equation. It calculates simple runs fast and provides a guarantee for real-time video image enhancement processing. 2010 IEEE.

Non-unitarity of CKM matrix from vector singlet quark mixing and neutron electric dipole moment 期刊论文 OAI收割
PHYSICS LETTERS B, 2001, 卷号: 503, 期号: 40972, 页码: 301-306
作者: Liao, Y; Li, XY , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.; Li, XY

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收藏 | 浏览/下载：30/0 | 提交时间：2012/08/29

Background-field Method Kobayashi-maskawa Model Induced Theta-term Cp-violation Standard Model B0 Decays Gauge-invariance Handed Currents Asymmetries Fermions

Enhanced contribution to quark and neutron electric dipole moments with small mixing of right-handed currents and CKM CP violation 期刊论文 OAI收割
PHYSICAL REVIEW D, 2000, 卷号: 61, 期号: 7, 页码: -
作者: Liao, Y; Li, XY; Liao, Y , Tsing Hua Univ, Dept Modern Appl Phys, Beijing 100084, Peoples R China.

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收藏 | 浏览/下载：17/0 | 提交时间：2012/08/29

Background-field Method Right-symmetrical Models Kobayashi-maskawa Model Standard Model Gauge Theories Non-conservation Supergravity B->s-gamma Parity Boson