机构

• 地理科学与资源研究所 [1]
• 成都山地灾害与环境研... [1]
• 长春光学精密机械与物... [1]
• 成都生物研究所 [1]
• 自动化研究所 [1]

采集方式

• OAI收割 [5]

内容类型

• 期刊论文 [2]
• SCI/SSCI论文 [1]
• 会议论文 [1]
• 学位论文 [1]

发表日期

• 2013 [2]
• 2010 [1]
• 2007 [1]
• 2003 [1]

学科主题

• Environmen... [1]

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 多任务学习理论与方法研究 学位论文  OAI收割 工学博士, 中国科学院自动化研究所: 中国科学院大学, 2013 作者:  杨沛沛 收藏  |  浏览/下载：239/0  |  提交时间：2015/09/02 多任务学习  公共子空间  图拉普拉斯正则化  度量学习  几何保持性  multi-task learning  common subspace  graph Laplacian regularization  metric learning  geometry preserving property   The Effects of Well Management and the Nature of the Aquifer on Groundwater Resources SCI/SSCI论文  OAI收割 2013 Huang Q. Q.; Wang J. X.; Rozelle S.; Polasky S.; Liu Y. 收藏  |  浏览/下载：27/0  |  提交时间：2014/12/24 community-based management  connected village  isolated village  collective well management  private well management  community-driven development  common property resource  north china  plain  collective action  water management  institutions  efficiency  governance  extraction  information   Fabrication and photoluminescence of ZnS: Mn2+ nanowires/ZnO quantum dots/SiO2 heterostructure (EI CONFERENCE) 会议论文  OAI收割 作者:  Yang L.;  Wang D.;  Wang Y.;  Wang Y.;  Wang Y. 收藏  |  浏览/下载：26/0  |  提交时间：2013/03/25 In this paper  we demonstrated the encapsulation of ZnS: Mn2+ nanowires (NWs) and ZnO quantum dots (QDs) with a layer of mesoporous SiO 2 shell for the purpose of integrating dual emission property into one common nanostructure. The average diameter of ZnS: Mn2+ NWs  ZnO QDs  and ZnS: Mn2+ / ZnO@SiO2 heterostructure was about 10 nm  6 nm  and 22 nm  respectively. Within ZnS: Mn2+ / ZnO@SiO 2 nanocomposites  the intensity of the yellow-orange emission contributed by ZnS: Mn2+ NWs and the UV emission contributed by ZnO QDs was three and ten times higher than their individual components  respectively. The fluorescence intensity ratio of the dual emission can be tuned by adjusting the hydrolysis time of tetraethyl orthosilicate. The peak energy of the yellow-orange and UV emission showed blueshift and redshift as increasing the temperature  respectively. The anomalous enhancement of the integrated intensity for the UV emission with the temperature indicated that the high surface state density existing in ZnO QDs can overrun the influence of temperature quenching and even alter the photoluminescent properties. 2010 American Institute of Physics.   Mountain commons: changing space and status at community levels in the Himalayas 期刊论文  OAI收割 JOURNAL OF MOUNTAIN SCIENCE, 2007, 卷号: 4, 期号: 2, 页码: 124–135 Jodha, Narpat S. 收藏  |  浏览/下载：26/0  |  提交时间：2013/08/15 nature-society interaction  common property resources  mountain regions  Himalayas   Community-based grassland management in Western China - Rationale, pilot project experience, and policy implications 期刊论文  OAI收割 MOUNTAIN RESEARCH AND DEVELOPMENT, 2003, 卷号: 23, 期号: 2, 页码: 132_140 Banks, T; Richard, C; Li, P; Yan, ZL 收藏  |  浏览/下载：36/0  |  提交时间：2011/07/08 China  Xinjiang  Tibetan Plateau  grassland policy  grassland management  land tenure  common property