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Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共13条,第1-10条 帮助

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Factors Affecting the Long-Term Development of Specialized Agricultural Villages North and South of Huai River 期刊论文  OAI收割
LAND, 2021, 卷号: 10, 期号: 11, 页码: 13
作者:  
Li, Li;  Niu, Ning;  Li, Xiaojian
  |  收藏  |  浏览/下载:17/0  |  提交时间:2022/09/21
Factors Affecting the Long-Term Development of Specialized Agricultural Villages North and South of Huai River 期刊论文  OAI收割
LAND, 2021, 卷号: 10, 期号: 11, 页码: 13
作者:  
Li, Li;  Niu, Ning;  Li, Xiaojian
  |  收藏  |  浏览/下载:23/0  |  提交时间:2022/09/21
Achieving China's Long-Term Carbon Emission Abatement Targets: A Perspective from Regional Disparity 期刊论文  OAI收割
SUSTAINABILITY, 2018, 卷号: 10, 期号: 11, 页码: 4244
作者:  
Yu, Zhi;  He, Chao;  Feng, Jingchun;  Bian, Yong;  Zeng, Xuelan
  |  收藏  |  浏览/下载:140/0  |  提交时间:2019/08/28
NeuroD2 regulates the development of hippocampal mossy fiber synapses 期刊论文  OAI收割
NEURAL DEVELOPMENT, 2012, 卷号: 7, 页码: 41161
作者:  
Qiu, Zilong
收藏  |  浏览/下载:23/0  |  提交时间:2012/07/13
Hydraulic conductivity traits predict growth rates and adult stature of 40 Aian tropical tree species better than wood density 期刊论文  OAI收割
Journal of Ecology, 2012, 卷号: 100, 期号: 3, 页码: 732-741
作者:  
Fan, ZX
收藏  |  浏览/下载:13/0  |  提交时间:2012/09/24
Hydraulic conductivity traits predict growth rates and adult stature of 40 Asian tropical tree species better than wood density 期刊论文  OAI收割
Journal of Ecology, 2012, 卷号: 100, 期号: 3, 页码: 732-741
Ze-Xin Fan; Shi-Bao Zhang; Guang-You Hao; J.W. Ferry Slik; Kun-Fang Cao*
收藏  |  浏览/下载:21/0  |  提交时间:2012/05/07
Synapse formation and remodeling 期刊论文  OAI收割
SCIENCE CHINA-LIFE SCIENCES, 2010, 卷号: 53, 期号: 3, 页码: 315-321
Luo ZhenGe
收藏  |  浏览/下载:25/0  |  提交时间:2012/07/13
Agricultural landscape change in China's Yangtze Delta, 1942-2002: A case study 期刊论文  iSwitch采集
AGRICULTURE ECOSYSTEMS & ENVIRONMENT, 2009, 卷号: 129, 期号: 4, 页码: 523-533
作者:  
Wu, Jun-Xi;  Cheng, Xu;  Xiao, Hong-Sheng;  Wang, Hongqing;  Yang, Lin-Zhang
收藏  |  浏览/下载:41/0  |  提交时间:2019/10/10
A high-accuracy parameter estimation algorithm for jointless Frequency-shift track circuit (EI CONFERENCE) 会议论文  OAI收割
ISECS International Colloquium on Computing, Communication, Control, and Management, CCCM 2008, August 3, 2008 - August 4, 2008, Guangzhou, China
作者:  
Zheng X.
收藏  |  浏览/下载:24/0  |  提交时间:2013/03/25
FSK (Frequency Shift keying) signal  which has advantages of narrow-bandwidth  strong anti-interference ability  long transmission distance and so on  is used in jointless Frequency-shift track circuit to send different kinds of control signals. However  as FSK is non-linearly modulated  parameter estimation with high accuracy is hard to realize. Based on the spectrum analysis complement with time-frequency distribution  a highaccuracy FSK signal parameter estimation algorithm is put forward in this paper. According to the signal characteristics  under-sampling and ZFFT are used to improve the accuracy of spectrum analysis  and the base frequency resolution meets system requirement of 0.02Hz. Wigner-Ville distribution has an excellent time-frequency concentration while serious cross-term interference at the same time. Through the design of kernel function  the cross-terms are almost suppressed and the upper/down side frequency resolution meets the system requirement of 0.2Hz. The effectivities of all the methods mentioned above have been proved by MATLAB simulation  which pave a solid way for the development of high-accuracy FSK signal parameter estimation devices. 2008 IEEE.  
Differential roles of NR2A- and NR2B-containing NMDA receptors in activity-dependent brain-derived neurotrophic factor gene regulation and limbic epileptogenesis 期刊论文  OAI收割
JOURNAL OF NEUROSCIENCE, 2007, 卷号: 27, 期号: 3, 页码: 542-552
作者:  
Xiong, Zhi-Qi
收藏  |  浏览/下载:24/0  |  提交时间:2012/07/23