机构

• 地理科学与资源研究所 [8]
• 自动化研究所 [2]
• 长春光学精密机械与物... [1]
• 中国科学院大学 [1]

采集方式

• OAI收割 [11]
• iSwitch采集 [1]

内容类型

• 期刊论文 [8]
• SCI/SSCI论文 [3]
• 会议论文 [1]

发表日期

• 2020 [2]
• 2018 [3]
• 2015 [1]
• 2008 [2]
• 2006 [3]
• 2005 [1]
• 更多

学科主题

筛选

浏览/检索结果: 共12条，第1-10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 Spatially Explicit Mapping of Historical Population Density with Random Forest Regression: A Case Study of Gansu Province, China, in 1820 and 2000 期刊论文  OAI收割 SUSTAINABILITY, 2020, 卷号: 12, 期号: 3, 页码: 16 作者:  Wang, Fahao;  Lu, Weidong;  Zheng, Jingyun;  Li, Shicheng;  Zhang, Xuezhen   |  收藏  |  浏览/下载：24/0  |  提交时间：2020/05/19 historical period  random forest regression model  population density  prediction  Gansu Province   Spatially Explicit Mapping of Historical Population Density with Random Forest Regression: A Case Study of Gansu Province, China, in 1820 and 2000 期刊论文  OAI收割 SUSTAINABILITY, 2020, 卷号: 12, 期号: 3, 页码: 16 作者:  Wang, Fahao;  Lu, Weidong;  Zheng, Jingyun;  Li, Shicheng;  Zhang, Xuezhen   |  收藏  |  浏览/下载：21/0  |  提交时间：2020/05/19 historical period  random forest regression model  population density  prediction  Gansu Province   Assessing the river habitat suitability and effects of introduction of exotic fish species based on anecohydraulic model system 期刊论文  OAI收割 ECOLOGICAL INFORMATICS, 2018, 卷号: 45, 页码: 59-69 作者:  Yao, Weiwei;  Zhao, Tongtong;  Chen, Yuansheng;  Yu, Guoan;  Xiao, Mingzhong   |  收藏  |  浏览/下载：34/0  |  提交时间：2019/05/23 Ecohydraulic model system  Fish introduction  Habitat suitability  Population density   Assessing the river habitat suitability and effects of introduction of exotic fish species based on anecohydraulic model system 期刊论文  OAI收割 ECOLOGICAL INFORMATICS, 2018, 卷号: 45, 页码: 59-69 作者:  Yao, Weiwei;  Zhao, Tongtong;  Chen, Yuansheng;  Yu, Guoan;  Xiao, Mingzhong   |  收藏  |  浏览/下载：19/0  |  提交时间：2019/05/23 Ecohydraulic model system  Fish introduction  Habitat suitability  Population density   Assessing the river habitat suitability and effects of introduction of exotic fish species based on anecohydraulic model system 期刊论文  OAI收割 ECOLOGICAL INFORMATICS, 2018, 卷号: 45, 页码: 59-69 作者:  Yao, Weiwei;  Zhao, Tongtong;  Chen, Yuansheng;  Yu, Guoan;  Xiao, Mingzhong   |  收藏  |  浏览/下载：19/0  |  提交时间：2019/05/23 Ecohydraulic model system  Fish introduction  Habitat suitability  Population density   Assessing the impact of population, income and technology on energy consumption and industrial pollutant emissions in China SCI/SSCI论文  OAI收割 2015 作者:  Liu Y. S.;  Zhou, Y.;  Wu, W. X. 收藏  |  浏览/下载：41/0  |  提交时间：2015/12/09 Population density  Energy consumption  Industrial pollutant emissions  STIRPAT model  EKC hypothesis  China  environmental kuznets curve  carbon-dioxide emissions  panel-data  analysis  co2 emissions  economic-growth  oecd countries  air-pollution  stirpat model  age structure  urbanization   Parameter optimization and field validation of the functional-structural model GREENLAB for maize at different population densities 期刊论文  OAI收割 ANNALS OF BOTANY, 2008, 卷号: 101, 期号: 8, 页码: 1185-1194 作者:  Ma, Yuntao;  Wen, Meiping;  Guo, Yan;  Li, Baoguo;  Cournede, Paul-Henry 收藏  |  浏览/下载：33/0  |  提交时间：2015/11/08 functional-structural plant model  GREENLAB  plant architecture  source-sink relationship  plant population density  maize (Zea mays)  model parameterization.   Parameter optimization and field validation of the functional-structural model GREENLAB for maize at different population densities 期刊论文  OAI收割 ANNALS OF BOTANY, 2008, 卷号: 101, 期号: 8, 页码: 1185-1194 作者:  Ma, Yuntao;  Wen, Meiping;  Guo, Yan;  Li, Baoguo;  Cournede, Paul-Henry 收藏  |  浏览/下载：14/0  |  提交时间：2015/11/08 functional-structural plant model  GREENLAB  plant architecture  source-sink relationship  plant population density  maize (Zea mays)  model parameterization.   Character and causes of population distribution in shenyang city, china 期刊论文  iSwitch采集 Chinese geographical science, 2006, 卷号: 16, 期号: 3, 页码: 217-222 作者:  Du Guoming;  Zhang Shuwen;  Zhang Youquan 收藏  |  浏览/下载：29/0  |  提交时间：2019/05/10 Population density model  Population distribution  Scale  Shenyang city   Energy transfer processes on both Er+ ion concentration and excitation densities in Yb3+-Er3+ codoped LaF3 matrix (EI CONFERENCE) 会议论文  OAI收割 作者:  Zhang J.;  Wang Y.;  Wang Y.;  Wang Y.;  Zhang J. 收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25 The effects of both Er3+ ion concentration and excited density upon frequency upconversion fluorescence emissions in Er3+/Yb 3+-codoped LaF3 powder are investigated. The results reveal that a higher Er3+ concentration can induce not only upconversion emission enhancements but also the changes among the relative intensities of the 407  519  539 and 651 nm radiation transitions as the samples are excited within the ranges of 20 to 700 mW with 978 nm laser diode (LD) as an excitation source. The changes are described by a schematic level model with the cross-relaxation processes between Er3+ ions and a series of dynamic equations that take into account the population of temperature dependent in Er3+. 2006 Elsevier B.V. All rights reserved.