中国科学院机构知识库网格系统: 检索

Revealing Impacts of Human Activities and Natural Factors on Dynamic Changes of Relationships among Ecosystem Services: A Case Study in the Huang-Huai-Hai Plain, China 期刊论文 OAI收割
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, 2022, 卷号: 19, 期号: 16, 页码: 21
作者: Deng, Longyun; Li, Yi; Cao, Zhi; Hao, Ruifang; Wang, Zheye

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收藏 | 浏览/下载：38/0 | 提交时间：2022/09/26

constraint line characteristic value threshold landscape index interaction effect

Research on the method of updating instrument line shape function of on-orbit fourier ultrahigh resolution spectrometer 期刊论文 OAI收割
JOURNAL OF INFRARED AND MILLIMETER WAVES, 2018, 卷号: 37, 期号: 5, 页码: 613-620
作者: Wang Jun-Feng; Ye Han-Han; Yi Wei-Ning; Chen Zhen-Ting; Fang Xue-Jing

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收藏 | 浏览/下载：101/0 | 提交时间：2019/12/25

instrument line shape function calibration spectrum fourier spectrometer solar spectrum model characteristic peak on-orbit

The Research of EAST Pedestal Structure and Preliminary Application 期刊论文 OAI收割
PLASMA SCIENCE & TECHNOLOGY, 2016, 卷号: 18, 期号: 10, 页码: 967-973
作者: Wang Tengfei; Zang Qing; Han Xiaofeng; Xiao Shumei; Hu Ailan

收藏 | 浏览/下载：25/0 | 提交时间：2017/09/07

Two-line Method Thomson Scattering Pedestal Characteristic Pedestal Models East

Engineering analysis and research on connection plate of vehicle radar antenna pedestal (EI CONFERENCE) 会议论文 OAI收割
3rd International Conference on Frontiers of Manufacturing and Design Science, ICFMD 2012, December 11, 2012 - December 13, 2012, Hong kong
作者: Sun H.; Sun H.; Li Y.; Li Y.; Li Y.

收藏 | 浏览/下载：26/0 | 提交时间：2013/03/25

According to the usage of vehicle radar antenna pedestal connection plate this article analyzes and compares the structure characteristic of welding and casting. We decide to adopt the casting structure and use cast aluminium ZL101A. Based on the connection plate of using conditions we analyze the deformation and stress of connection plate by the finite element analysis software. The design is in line with the material allowable requirements and to meet the requirements of the system stiffness. (2013) Trans Tech Publications Switzerland.

CS effect and characteristic emission on silicon nanostructures prepared in various atmospheres 期刊论文 OAI收割
Optics Communications, 2013, 卷号: 309, 页码: 127-133
作者: Zhong-Mei Huang; Wei-Qi Huang; Xin-Jian Miao; Chao-Jian Qin

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收藏 | 浏览/下载：21/0 | 提交时间：2019/08/16

Silicon Nanostructures curved Surface Effect characteristic Line localized States

Growth hormone transgene effects on growth performance are inconsistent among offspring derived from different homozygous transgenic common carp (Cyprinus carpio L.) 期刊论文 OAI收割
AQUACULTURE, 2012, 卷号: 356, 页码: 404-411
作者: Zhong, Chengrong; Song, Yanlong; Wang, Yaping; Li, Yongming; Liao, Lanjie

收藏 | 浏览/下载：25/0 | 提交时间：2012/09/25

Growth hormone Transgenic common carp Homozygous line Biological characteristic Breed

An engineering analysis and research on center frame structure using casting of vehicle radar antenna pedestal (EI CONFERENCE) 会议论文 OAI收割
2012 International Conference on Industrial Design and Mechanical Power, ICIDMP 2012, July 10, 2012 - July 11, 2012, Huangshan, China
作者: Li Y.; Liu W.; Li Y.; Li Y.; Li Y.

收藏 | 浏览/下载：26/0 | 提交时间：2013/03/25

According to the usage of vehicle radar antenna pedestal center frame this article analyzes and compares the structure characteristic of welding and casting. We decide to adopt the casting structure and use special casting material ductile iron QT450-10. And we describe the casting material ductile iron QT450-10. Based on the center frame of using conditions we analyze the deformation and stress of center frame by the finite element analysis software. The design is in line with the material allowable requirements and to meet the requirements of the system stiffness. (2012) Trans Tech Publications Switzerland.

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：19/0 | 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.

Design of transmission of high-speed CCD driving signals (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011, August 19, 2011 - August 22, 2011, Jilin, China
作者: Zhang S.

收藏 | 浏览/下载：71/0 | 提交时间：2013/03/25

In order to overcome the distortion problem of CCD driving signals caused by signal transmission the detail implementation of transmission of high-speed CCD driving signals based on transmission line theory is discussed. The CCD driving signals are critical to the CCD to produce high quality images. In high speed application these drivers will occupy more circuit board areas and can not be put very close to the CCD. So the driving signals must be transmitted. Because the CCD exhibits capacitive load the driving signals distortion problem is much severe. Transmission line theory is used to analyze the problem. The method of source termination is adopted to avoid signal reflections. Meanwhile the characteristic impedance of the circuit board and the resistance of terminal resistor are designed small enough to decrease the rising and falling time of the driving signals. Experimental results show that there is no distortion of the high speed driving signals after transmission. 2011 IEEE.

a new method of line feature generalization based on shape characteristic analysis 期刊论文 OAI收割
METROLOGY AND MEASUREMENT SYSTEMS, 2011, 卷号: 18, 期号: 4, 页码: 597-605
Nie Hongshan; Huang Zhijian

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收藏 | 浏览/下载：17/0 | 提交时间：2013/10/08

Line generalization key point detection shape characteristic analysis