中国科学院机构知识库网格系统: 检索

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	Spatio-temporal evolution and location factors of port and shipping service enterprises: A case study of the Yangtze River Delta 期刊论文 OAI收割 JOURNAL OF TRANSPORT GEOGRAPHY, 2023, 卷号: 106, 页码: 12 作者: Jiang, Ziran; Lei, Liping; Zhang, Jianzhen; Wang, Chengjin; Ye, Shilin \| 收藏 \| 浏览/下载：14/0 \| 提交时间：2023/03/20 Port and shipping service enterprises Spatial distribution Conditional logit model Location selection
	Location Prediction: A Temporal-Spatial Bayesian Model 期刊论文 OAI收割 ACM TRANSACTIONS ON INTELLIGENT SYSTEMS AND TECHNOLOGY, 2016, 卷号: 7, 期号: 3, 页码: 25 作者: Jia, Yantao; Wang, Yuanzhuo; Jin, Xiaolong; Cheng, Xueqi \| 收藏 \| 浏览/下载：28/0 \| 提交时间：2019/12/13 Design Algorithms Performance Location prediction influential friends dynamic selection temporal-spatial evolution dynamic Bayesian network
	Influential factors in employment location selection based on "push-pull" migration theory-a case study in Three Gorges Reservoir area in China 期刊论文 OAI收割 JOURNAL OF MOUNTAIN SCIENCE, 2015, 卷号: 12, 期号: 6, 页码: 1562-1581 作者: Xu Ding-de; Zhang Ji-fei; Xie Fang-ting; Liu Shao-quan; Cao Meng-tian 收藏 \| 浏览/下载：38/0 \| 提交时间：2015/11/19 Off-farm employment Location selection Migrants Push-Pull migration theory Three Gorges Reservoir region China
	新疆跨国旅游合作结构模式研究——基于空间区位选择视角[J] 期刊论文 OAI收割人文地理, 2014, 卷号: 2, 页码: 156-160 作者: 王辉; 刘敬华; 杨兆萍; 渤海大学旅游学院; 中国科学院新疆生态与地理研究所 \| 收藏 \| 浏览/下载：13/0 \| 提交时间：2017/12/29 新疆旅游合作空间结构区位选择 Xinjiang Tourism Cooperation Spatial Structure Location Selection
	Influences on rural migrant workers' selection of employment location in the mountainous and upland areas of Sichuan, China 期刊论文 OAI收割 JOURNAL OF RURAL STUDIES, 2014, 卷号: 33, 页码: 71-81 作者: Liu, Shaoquan; Xie, Fangting; Zhang, Haiqin 收藏 \| 浏览/下载：40/0 \| 提交时间：2014/10/31 Mountainous and upland area Off-farm employment Location selection Migrants
	Structural design of primary mirror subassembly for space telescope (EI CONFERENCE) 会议论文 OAI收割 2nd International Conference on Mechatronics and Applied Mechanics, ICMAM 2012, December 8, 2012 - December 9, 2012, Taiwan 作者: Xu H. 收藏 \| 浏览/下载：62/0 \| 提交时间：2013/03/25 In order to design a large aperture primary mirror with the diameter of 1150 mm the parameters impacting on gravity deformation of the mirror were analyzed and discussed in detail including material selection diameter-thickness ratio the number of the support points location selection and lightweight structure etc. A novel space mirror structure system was put forward and its back was opened and supported by six points on back. The dynamic and static and thermal characteristics were analyzed based on the finite element method. Analysis results showed the surface figure accuracy reached to RMS 14.5nm under the action of gravity load along the optical axis direction and the first-order natural frequency was 214Hz which met to the designed indexes requirements. (2013) Trans Tech Publications Switzerland.
	Structural design of large aperture rectangular mirror for space telescope (EI CONFERENCE) 会议论文 OAI收割 2nd International Conference on Civil Engineering and Transportation, ICCET 2012, October 27, 2012 - October 28, 2012, Guilin, China 作者: Li Z.; Li Z. 收藏 \| 浏览/下载：41/0 \| 提交时间：2013/03/25 Structural design of large aperture mirror is one of the key technologies for space telescope development. To meet the requirements of high stiffness strength and thermal dimensional stability some factors such as support scheme materials selection lightweight design and flexible support design were taken into account. The three supports location of the mirror was determined according to the modal analytical solution. By adjusting the parameters of flexure hinge influences of gravity assembly stress and thermal stress on the mirror were reduced obviously. Finite element analysis (FEA) results indicate that the surface accuracy reach to rms10.2nm and 10.8nm under the gravity along optical axis direction and 5C uniform temperature rise respectively the fundamental frequency of the mirror component is 268Hz. Dynamics test shows that the first order natural frequency is 256Hz which shows an error less than 5% compared to FEA results. (2013) Trans Tech Publications Switzerland.