机构

• 地理科学与资源研究所 [3]
• 长春光学精密机械与物... [2]
• 寒区旱区环境与工程研... [1]
• 沈阳自动化研究所 [1]

采集方式

• OAI收割 [6]
• iSwitch采集 [1]

内容类型

• 期刊论文 [5]
• 会议论文 [2]

发表日期

• 2022 [2]
• 2017 [1]
• 2015 [1]
• 2013 [1]
• 2009 [2]

学科主题

筛选

浏览/检索结果: 共7条，第1-7条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Assessing Urban Resilience from the Perspective of Scaling Law: Evidence from Chinese Cities 期刊论文  OAI收割 LAND, 2022, 卷号: 11, 期号: 10, 页码: 23 作者:  Shi, Chenchen;  Guo, Naliang;  Zhu, Xiaoping;  Wu, Feng   |  收藏  |  浏览/下载：33/0  |  提交时间：2022/11/18 urban scaling laws  scaling exponent  scale-adjusted metropolitan indicator  allometric growth  resilient cities  resilience index  scaling patterns   Assessing Urban Resilience from the Perspective of Scaling Law: Evidence from Chinese Cities 期刊论文  OAI收割 LAND, 2022, 卷号: 11, 期号: 10, 页码: 23 作者:  Shi, Chenchen;  Guo, Naliang;  Zhu, Xiaoping;  Wu, Feng   |  收藏  |  浏览/下载：30/0  |  提交时间：2022/11/18 urban scaling laws  scaling exponent  scale-adjusted metropolitan indicator  allometric growth  resilient cities  resilience index  scaling patterns   Analyzing spatial variations in land use/cover distributions: A case study of Nanchang area, China 期刊论文  OAI收割 ECOLOGICAL INDICATORS, 2017, 卷号: 76, 页码: 52-63 作者:  Zhang, Yang;  Wang, Chuansheng;  Xie, Hongbin;  Zhang, Jie;  Wu, Jiaping   |  收藏  |  浏览/下载：40/0  |  提交时间：2019/09/25 Spatial pattern  Landscape  Gradient  Density indicator  Scale effect   Several challenges in monitoring and assessing desertification 期刊论文  iSwitch采集 Environmental earth sciences, 2015, 卷号: 73, 期号: 11, 页码: 7561-7570 作者:  Liu, Shulin;  Wang, Tao;  Kang, Wenping;  David, Mouat 收藏  |  浏览/下载：38/0  |  提交时间：2019/09/04 Desertification  Baseline  Indicator  Temporal  Spatial scale   Influences of visual feedback indicator scales on human upright postural control 期刊论文  OAI收割 Transctions of the Institute of Measurement and Control, 2013, 卷号: 35, 期号: 7, 页码: 883-892 作者:  Pei LL(裴立力);  Li HY(李洪谊);  Fu YF(伏云发);  Yang YH(杨艳华);  Li JT(李江涛) 收藏  |  浏览/下载：23/0  |  提交时间：2012/12/28 postural control  visual feedback  indicator scale  power spectrum  energy distribution   Small roll angle measurement based on auto-collimation and moire fringe (EI CONFERENCE) 会议论文  OAI收割 2009 International Conference on Optical Instruments and Technology - Optoelectronic Measurement Technology and Systems, October 19, 2009 - October 22, 2009, Shanghai, China Bai X.-G.; Cai S.; Qiao Y.-F.; Dai M. 收藏  |  浏览/下载：32/0  |  提交时间：2013/03/25 A novel method for small roll angle measurement based on auto-collimation and moire fringe is presented. A right-angle prism is used as an indicator of small roll angle around the optical axis  and a CCD is used to collect moire fringes that are generated by scale grating image which is reflected by prism and index grating. Any small roll angle of the prism will change the include angle of the grating pair and meanwhile induce a change in the moire fringe period. The relationship between roll angle and period of moire fringes is established. The period data is obtained by image processing. The experimental result certifies that the principle of small angle measurement method based on auto-collimation and moire fringe is correct and feasible. The measuring error is smaller than 0.2 within 7 range compared with 0.2 autocollimator. 2009 SPIE.   Three-dimensional angle measurement based on auto-collimation and moire fringe (EI CONFERENCE) 会议论文  OAI收割 2008 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Applications, November 16, 2008 - November 19, 2008, Beijing, China Cai S.; Liang S.; Qiao Y.-F. 收藏  |  浏览/下载：28/0  |  提交时间：2013/03/25 A method for small three-dimensional (3D) angle measurement based on auto-collimation and moire fringe is proposed and analyzed. A right-angle prism is used as the indicator of angle change. The inclined plane indicates the pitch and yaw angles and roll angle in indicated by the rib which is the intersection of two right-angle sides. Pitch and yaw angles measurement are implemented by auto-collimation based on reticule and roll angle measurement is measured based on moire fringe. Roll angle measurement is separated from pitch and yaw by using two light sources with different frequencies. Any small change of pitch and roll angles will induce the shift of the reticule image after reflecting by inclined plane. And any small roll angle will induce a change in moire fringe width that is generated by scale grating image which is reflected by the prism and index grating. The math model of this method is built up and error analysis is presented. The theoretical calculation results show that the proposed method is feasible and can achieve high accuracy. 2009 SPIE.