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浏览/检索结果: 共8条，第1-8条 帮助

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Cross stage partial connections based weighted Bi-directional feature pyramid and enhanced spatial transformation network for robust object detection 期刊论文  OAI收割
NEUROCOMPUTING, 2022, 卷号: 513, 页码: 70-82
作者:  Lu, Yan-Feng;  Yu, Qian;  Gao, Jing-Wen;  Li, Yi;  Zou, Jun-Cheng
  |  收藏  |  浏览/下载：116/0  |  提交时间：2022/11/14
Mechanism and forecasting model for shield jamming during TBM tunnelling through deep soft ground 期刊论文  OAI收割
EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING, 2019, 卷号: 23, 期号: 9, 页码: 1035-1068
作者:  Huang, Xing;  Liu, Quansheng;  Peng, Xingxin;  Lei, Guangfeng;  Liu, He
  |  收藏  |  浏览/下载：36/0  |  提交时间：2020/04/08
Demonstration of spatial anisotropic deformation properties for jointed rock mass by an analytical deformation tensor 期刊论文  OAI收割
COMPUTERS AND GEOTECHNICS, 2017, 卷号: 88, 页码: 111-128
作者:  Zhang, Mei-zhu;  Ran, Shu-guang;  Zhong, Shan;  Jiang, Quan;  Cui, Jie
  |  收藏  |  浏览/下载：24/0  |  提交时间：2018/06/05
Combining tract- and atlas-based analysis reveals microstructural abnormalities in early Tourette syndrome children 期刊论文  OAI收割
HUMAN BRAIN MAPPING, 2016, 卷号: 37, 期号: 5, 页码: 1903-1919
作者:  Wen, Hongwei;  Liu, Yue;  Wang, Jieqiong;  Rekik, Islem;  Zhang, Jishui
  |  收藏  |  浏览/下载：30/0  |  提交时间：2016/10/20
Monitoring of ground deformation in Jintan salt cavern gas storage area using permanent scatterer interferometry (PSI) 会议论文  OAI收割
Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, Chinese, 2012
Li,Langping(李郎平); Lan,Hengxing; Li,Xiao; Meng,Yunshan; Chen,Yu
收藏  |  浏览/下载：27/0  |  提交时间：2013/03/20
Deformation Monitoring and Forecasting Model Study Based on Grey System Theory 会议论文  OAI收割
3rd Internationa Conference on Fuzzy Information and Engineering (ICFIE 2009), Chongqing Univ Sci & Technol, Chongqing, PEOPLES R CHINA, SEP 26-29, 2009
Liu Rui(刘睿); Li Xiaolei
收藏  |  浏览/下载：197/37  |  提交时间：2011/06/02
Research on the support structure of the primary mirror of large-aperture telescope (EI CONFERENCE) 会议论文  OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Large Mirrors and Telescopes, July 8, 2007 - July 12, 2007, Chengdu, China
Yang W.; Jingxu Z.
收藏  |  浏览/下载：28/0  |  提交时间：2013/03/25
Large-aperture telescope can be used in surveying battlefield  researching landform  searching object  real-time monitoring  imaging  detecting and identifying spatial targets and so on. A large-aperture telescope for achieving high resolution power is designed to monitor spatial target and image in real time. Real-time monitoring plays an important role in military conflicts. The orbit parameter of object  quantity  geometrical shape parameter and so on can be obtained by detect spatial target. With the development of optical technology  people require larger aperture in optics-electronic (OE) system. By increasing optical aperture  the ability of collecting light and resolution power in the system can be enhanced. But the support structure of the primary mirror of large-aperture telescope will be a very difficult problem. With the increase of primary mirror aperture  the weight of the primary mirror will become larger than before. The root mean square (rms) of the primary mirror is affected by many factors  such as deadweight  deformation of heat  environment and so on. Due to the primary mirror of telescope is an important component of telescope system. By reducing the weight of primary mirror  precision of the system is ensured. During the designing phase  one can consider the supporting project of the primary mirror synthetically and analyze it roundly according to technical requirement of optical system and the effect factors. The final structural design can be reasonable. In an astronomical telescope  the surface of reflector is an important part for collecting dark radiation of celestial bodies. Its surface shape will have an effect on collecting efficiency of telescope radiant energy directly. So the rms must be very high. Optical system of large aperture  small wavelength and small focus can receive maximal light intensity. For ground-based optical astronomical telescope  the design proposed in the paper can satisfy the requirement of the possible minimum atmosphere seeing at astronomical observatory site and exert the use efficiency of the telescope adequately. So the accuracy of the traditional surface of reflector can assure that 90% of all the light energy can be focused on within the angle diameter range of the minimum atmosphere seeing  then 100% of light energy should be focused on the angle diameter range of minimum atmosphere seeing. Because the rms of mirror is very high  precise surface machining and accurate the support of mirror are very important tasks during designing and manufacturing the telescope. In the paper  various support techniques of a large-aperture telescope primary mirror are discussed and a 3.5 meter telescope system at the Starfire Optical Range (SOR) overviewed simply  which was operated by the Directed Energy Directorate of the Air Force Research Laboratory  Kirtland AFB  NM  USA from the ground-based O-E system for the observations of spatial target. We also analyze Theoretical elastic deformation of the Steward Observatory 2.3 meter mirror is analyzed.  
Some statistic characteristics of ''Underground Hot Vortex'' in China during 1980-1993 .1. Spatial-temporal distribution of Underground Hot Vortex 期刊论文  iSwitch采集
SCIENCE IN CHINA SERIES D-EARTH SCIENCES, 1997, 卷号: 40, 期号: 6, 页码: 561-568
作者:  Tang, MC;  Gao, XQ
收藏  |  浏览/下载：15/0  |  提交时间：2019/10/08