机构

• 地理科学与资源研究所 [5]
• 长春光学精密机械与物... [1]

采集方式

• OAI收割 [6]

内容类型

• 期刊论文 [5]
• 会议论文 [1]

发表日期

• 2023 [1]
• 2022 [4]
• 2011 [1]

学科主题

筛选

浏览/检索结果: 共6条，第1-6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 Does the Identification of Important Agricultural Heritage Systems Promote Economic Growth? Empirical Analysis Based on County Data from China 期刊论文  OAI收割 AGRICULTURE-BASEL, 2023, 卷号: 13, 期号: 9, 页码: 17 作者:  Li, Jingyi;  He, Jiaxin;  Yang, Lun;  Min, Qingwen   |  收藏  |  浏览/下载：61/0  |  提交时间：2023/10/30 China-NIAHS  GIAHS  DID model  economic growth   Did civilized city policy improve energy efficiency of resource-based cities? Prefecture-level evidence from China 期刊论文  OAI收割 ENERGY POLICY, 2022, 卷号: 167, 页码: 12 作者:  Li, Bo;  Han, Yukai;  Wang, Chensheng;  Sun, Wei   |  收藏  |  浏览/下载：16/0  |  提交时间：2022/09/21 Resource-based cities  Energy efficiency  Civilized city policy  DID model   Did civilized city policy improve energy efficiency of resource-based cities? Prefecture-level evidence from China 期刊论文  OAI收割 ENERGY POLICY, 2022, 卷号: 167, 页码: 12 作者:  Li, Bo;  Han, Yukai;  Wang, Chensheng;  Sun, Wei   |  收藏  |  浏览/下载：18/0  |  提交时间：2022/09/21 Resource-based cities  Energy efficiency  Civilized city policy  DID model   Can the Adjustment of China's Grain Purchase and Storage Policy Improve Its Green Productivity? 期刊论文  OAI收割 INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, 2022, 卷号: 19, 期号: 10, 页码: 24 作者:  Li, Jingdong;  Lin, Qingning   |  收藏  |  浏览/下载：20/0  |  提交时间：2022/09/21 DID model  green productivity  maize production  purchase and storage policy   Can the Adjustment of China's Grain Purchase and Storage Policy Improve Its Green Productivity? 期刊论文  OAI收割 INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, 2022, 卷号: 19, 期号: 10, 页码: 24 作者:  Li, Jingdong;  Lin, Qingning   |  收藏  |  浏览/下载：15/0  |  提交时间：2022/09/21 DID model  green productivity  maize production  purchase and storage policy   Study of the neural network constitutive models for turfy soil with different decomposition degree (EI CONFERENCE) 会议论文  OAI收割 2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China 作者:  Nie L. 收藏  |  浏览/下载：18/0  |  提交时间：2013/03/25 The turfy soil is of a special humus soil. The decomposition degree is the main factor on the physical and mechanical properties of turfy soil. To build the turfy soil constitutive model  there are a few shortages such as the calculation cumbersome and low accuracy for parameter value with the method of traditional models. Furthermore  those methods did not reflect the influence of strength that effected by decomposition degree of the turfy soil. In this paper  the relationship of stress-strain with different decomposition degrees of turfy soil was carried out through indoor tests. Based on above experimental results  an improved method  which divided into different zones according to different decomposition degrees of turfy soil and calculated combining with neural network constitutive model is put forward. The result shows that  the neural network of turfy soil has good fitting precision and good generalization ability. It can fully describe the influence of the turfy soil. 2011 IEEE.