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浏览/检索结果: 共10条，第1-10条 帮助

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The development characteristics and formation modes of rainstorm-triggered flash flood disasters in the Hengduan Mountains 期刊论文  OAI收割
JOURNAL OF GEOGRAPHICAL SCIENCES, 2025, 卷号: 35, 期号: 3, 页码: 619-640
作者:  Li, Yifan;  Zhang, Chendi;  Zhang, Guotao
  |  收藏  |  浏览/下载：5/0  |  提交时间：2025/04/21
Extracting and evaluating typical characteristics of rural revitalization using web text mining 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF GEOGRAPHICAL INFORMATION SCIENCE, 2023, 页码: 25
作者:  Fan, Kunkun;  Li, Daichao;  Wu, Haidong;  Wang, Yingjie;  Yu, Hu
  |  收藏  |  浏览/下载：20/0  |  提交时间：2023/12/22
Meso-Mechanical Characteristics of Granite with Natural Cracks after Mud Acid Corrosion 期刊论文  OAI收割
ENERGIES, 2022, 卷号: 15, 期号: 3, 页码: 19
作者:  Tong, Rongchen;  Liu, Hejuan;  Liu, Jianfeng;  Shi, Yingkun;  Xie, Lihuan
  |  收藏  |  浏览/下载：72/0  |  提交时间：2022/04/11
资源科学的学科建设与人才培养模式的实践与思考 期刊论文  OAI收割
自然资源学报, 2020, 卷号: 35, 期号: 8, 页码: 1817
作者:  封志明;  江东;  雷梅;  李宇
  |  收藏  |  浏览/下载：13/0  |  提交时间：2021/03/16
资源科学的学科建设与人才培养模式的实践与思考 期刊论文  OAI收割
自然资源学报, 2020, 卷号: 35, 期号: 8, 页码: 1817
作者:  封志明;  江东;  雷梅;  李宇
  |  收藏  |  浏览/下载：7/0  |  提交时间：2021/03/16
Characteristic Development Model: A Transformation for the Sustainable Development of Small Towns in China 期刊论文  OAI收割
SUSTAINABILITY, 2019, 卷号: 11, 期号: 13, 页码: 21
作者:  Wang, Xueqin;  Liu, Shenghe;  Sykes, Olivier;  Wang, Chengxin
  |  收藏  |  浏览/下载：50/0  |  提交时间：2019/09/24
Characteristic Development Model: A Transformation for the Sustainable Development of Small Towns in China 期刊论文  OAI收割
SUSTAINABILITY, 2019, 卷号: 11, 期号: 13, 页码: 21
作者:  Wang, Xueqin;  Liu, Shenghe;  Sykes, Olivier;  Wang, Chengxin
  |  收藏  |  浏览/下载：16/0  |  提交时间：2019/09/24
Characteristic Development Model: A Transformation for the Sustainable Development of Small Towns in China 期刊论文  OAI收割
SUSTAINABILITY, 2019, 卷号: 11, 期号: 13, 页码: 21
作者:  Wang, Xueqin;  Liu, Shenghe;  Sykes, Olivier;  Wang, Chengxin
  |  收藏  |  浏览/下载：14/0  |  提交时间：2019/09/24
城市产业生态系统特征及其可持续性演进研究：以北京市为例 学位论文  OAI收割
硕士, 北京: 中国科学院研究生院, 2016
作者:  赵秋叶
收藏  |  浏览/下载：38/0  |  提交时间：2017/08/07
Space optics remote sensor focusing components mechanics characteristic analysis based on FEM (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Material and Device Technology for Sensors, June 17, 2009 - June 19, 2009, Beijing, China
作者:  Wang B.;  Ren J.-Y.;  Wang B.
收藏  |  浏览/下载：159/0  |  提交时间：2013/03/25
Space optical remote sensor is very important in many fields of science and military significance. It is widely applied. Space optical remote sensor design and manufacturing require precision and stability. Focusing mechanics is an important component of remote sensors. Focusing mechanics can guarantee the stability of the entire mechanics focusing accuracy  therefore the stability of research focusing mechanics is very important. In order to guarantee the space optics remote sensor focusing mechanics the stability  takes steps the space optics remote sensor focusing organization mechanics characteristic analysis from the classics contact theory. This article uses international general non-linear finite element analysis software ABAQUS to carry on mechanics characteristic analysis to the space optics remote sensor focusing mechanics. First acts according to the focusing mechanics unique feature  carries on the finite element to the structural model the grid division  the material attribute disposition and the boundary condition indeed grades. Then establishment contact non-linear finite element model  and to focusing organization finite element model infliction unit action. Like this contacts the result and the equivalent static analysis result which the nonlinear analysis obtains carries on the contrast and the analysis. This article last count result modality is 90HZ  satisfies the space optics remote sensor structure overall modality to request to be bigger than 50HZ.This article when carries on the dynamic analysis  extracts the structure kinetic energy and the acceleration curve. In the dynamic analysis obtained transient response analysis modality 70.5Hz  this also is bigger than 50HZ. The dynamic analysis indicated the structure dynamic stability has the distinct enhancement  has provided certain foundation for the space optics remote sensor following development work  reduced the overall system development cycle. 2009 SPIE.