机构

• 地理科学与资源研究所 [3]
• 长春光学精密机械与物... [1]
• 武汉岩土力学研究所 [1]

采集方式

• OAI收割 [5]

内容类型

• 期刊论文 [4]
• 会议论文 [1]

发表日期

• 2024 [1]
• 2023 [1]
• 2020 [2]
• 2008 [1]

学科主题

筛选

浏览/检索结果: 共5条，第1-5条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序作者升序作者降序 Novel Evaluation Method of 3D Joint Roughness Based on Random Field Theory 期刊论文  OAI收割 INTERNATIONAL JOURNAL OF GEOMECHANICS, 2024, 卷号: 24, 期号: 11, 页码: 13 作者:  Kang, Jingyu;  Fu, Xiaodong;  Tian, Ning;  Sheng, Qian;  Chen, Jian   |  收藏  |  浏览/下载：2/0  |  提交时间：2025/06/27 3D joint  Roughness  Random field  Scales of fluctuation  Sampling interval  Normalization   Coupled estimation of global 500m daily aerodynamic roughness length, zero-plane displacement height and canopy height 期刊论文  OAI收割 AGRICULTURAL AND FOREST METEOROLOGY, 2023, 卷号: 342, 页码: 109754 作者:  Peng, Zhong;  Tang, Ronglin;  Liu, Meng;  Jiang, Yazhen;  Li, Zhao-Liang   |  收藏  |  浏览/下载：24/0  |  提交时间：2023/12/04 Aerodynamic roughness length  Zero -plane displacement height  Canopy height  Balanced random forest  Lidar   Variation in soil surface roughness under different land uses in a small watershed on the Loess Plateau, China 期刊论文  OAI收割 CATENA, 2020, 卷号: 188, 页码: 10 作者:  Zhu, Ping-zong;  Zhang, Guang-hui;  Zhang, Bao-jun;  Wang, Hong-xiao   |  收藏  |  浏览/下载：28/0  |  提交时间：2020/05/19 Random roughness  Photogrammetry  Land use change  Vegetation restoration  Chinese Loess Plateau   Land surface roughness affected by vegetation restoration age and types on the Loess Plateau of China 期刊论文  OAI收割 GEODERMA, 2020, 卷号: 366, 页码: 11 作者:  Zhu, Pingzong;  Zhang, Guanghui;  Wang, Hongxiao;  Zhang, Baojun;  Wang, Xue   |  收藏  |  浏览/下载：36/0  |  提交时间：2020/05/19 Random roughness  Photogrammetry  Vegetation restoration  Near soil surface characteristics  The Loess Plateau of China   Manufacturing and testing of the line-array fiber-optic image slicer based on silicon V-grooves (EI CONFERENCE) 会议论文  OAI收割 MEMS/MOEMS Technologies and Applications III, November 12, 2007 - November 14, 2007, Beijing, China 作者:  Zhu Y. 收藏  |  浏览/下载：30/0  |  提交时间：2013/03/25 Linear fiber-optic image slicer is used more and more in spatial exploration and imaging system. In this paper  a plane arranging method of fiber-optic array based on Si-V grooves is established in order to improve the accuracy and reduce the cost of manufacturing. Firstly  the Si-V groove array is micro-machined with anisotropic etching process  then optical fibers are placed in the grooves orderly with plane arranging method. Secondly  the end surfaces of the device are polished  also the linear fiber-optic image slicer is packaged. Finally  some parameters are tested  including structure parameters  transmittivity and vibration test. Experimental results indicate that the maximum error accumulated in 2000 periods of the Si-V grooves is 0.5 m  the error of the height in Si-V grooves is less than 0.15m  the roughness of the end surface is less than 0.9nm. The transmittivity of the linear fiber-optic image slicer that without optical film is 51.46% at the wavelength of 632.8nm. After random vibration experiment  the ratio of the broken fiber increased by 0.1%. While the temperature reached 320C  the stress of epoxy will be 130Mpa  which is close to the limit resistance stress of 139Mpa  some cracks appeared.