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长春光学精密机械与物... [3]
物理研究所 [1]
地理科学与资源研究所 [1]
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会议论文 [3]
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Future inequality of human exposure to greenspace resource and spatial utilization strategy in China
期刊论文
OAI收割
RESOURCES CONSERVATION AND RECYCLING, 2025, 卷号: 218, 页码: 108231
作者:
Feng, Rundong
;
Chen, Bin
;
Liu, Shenghe
;
Wang, Fuyuan
;
Wang, Kaiyong
  |  
收藏
  |  
浏览/下载:8/0
  |  
提交时间:2025/04/21
Greenspace exposure inequality
Structural difference
Spatial utilization strategy
Multi-scenario trend
China
Study on the difference between turfy soil and normal peat soil in China (EI CONFERENCE)
会议论文
OAI收割
2011 International Conference on Vibration, Structural Engineering and Measurement, ICVSEM2011, October 21, 2011 - October 23, 2011, Shanghai, China
作者:
Nie L.
收藏
  |  
浏览/下载:35/0
  |  
提交时间:2013/03/25
As the special soil
turfy soil and peat soil in China contained some similar properties with high void ratio
high water content
high organic content
etc. But turfy soil also had properties which difference from peat soil. In this paper
based on the formation of the cause and geological environment and geomorphologic characteristics of geological in the quaternary
took the typical and widespread turfy soil and peat soil regions for example
systematically discussed the material composition and macroscopic and microcosmic structural features
put further research on the physical chemistry mechanical characteristics. Then the come to the conclusion that the essential reason for difference between turfy soil and peat soil were decomposition degree and organic content. The result that worse engineering properties such as higher the moisture content
porosity
compressibility
internal cohesion and the lower specific weight
consolidation coefficient and permeability were due to the lower decomposition degree and higher organic content of turfy soil than peat soil. It can provide reference to the practical projects of turfy soil to distinguish peat soil according to this characteristic. (2012) Trans Tech Publications.
Protein Structure Alignment Based on Internal Coordinates
期刊论文
OAI收割
INTERDISCIPLINARY SCIENCES-COMPUTATIONAL LIFE SCIENCES, 2010, 卷号: 2, 期号: 4, 页码: 308-319
作者:
Shen, Yue-Feng
;
Li, Bo
;
Liu, Zhi-Ping
  |  
收藏
  |  
浏览/下载:13/0
  |  
提交时间:2018/07/30
protein structure alignment
internal coordinate
difference matrix
structural bioinformatics
Space camera focusing forecast based on RBF network (EI CONFERENCE)
会议论文
OAI收割
Computational Intelligence and Intelligent Systems: 4th International Symposium, ISICA 2009, Huangshi, China, October 23-25, 2009. Proceedings, Tiergartenstrasse 17, Heidelberg, D-69121, Germany
作者:
Liu J.
;
Yu D.
;
Yu D.
;
Liu J.
;
Liu J.
收藏
  |  
浏览/下载:21/0
  |  
提交时间:2013/03/25
As circumstance temperature of space camera changes
flex of structural components and distortion of optical components lead to change of focal length and image quality. Radial Basis Function (RBF) network is used to approximate the complex nonlinear relation between focalization quantity
image quality
temperature level and axial temperature difference of space camera. After the RBF Network is trained with thermo-optical experiment data
temperature level and axial temperature difference could be input to the network to obtain colder value of best image position. In this way focusing forecast under different temperatures can be realized. Results of focusing forecast experiment validate this method. 2009 Springer-Verlag Berlin Heidelberg.
Study of micro-actuator with electrostatic actuating (EI CONFERENCE)
会议论文
OAI收割
ICO20: MEMS, MOEMS, and NEMS, August 21, 2005 - August 26, 2005, Changchun, China
作者:
Liu C.-X.
;
Liu C.-X.
收藏
  |  
浏览/下载:16/0
  |  
提交时间:2013/03/25
The micro-actuator with the torsion beam and the cantilever beam on silicon is designed and analyzed
which is actuated by electrostatic force. Based on the torsion dynamics theory
the technique and relative formula are presented for analyzing the actuating voltage and the switching time
on which the effect of the air squeeze film damping is already considered. The optimized results of the structural parameters are compared between this technique and the finite element modeling (FEM). The optimized result of parameters is as: length
width and thickness of the torsion beam are 700
12 and 10m
length and width of the cantilever beam are 1900 and 1000m
length and width of the balance beam are 100 and 1000m
and distance of the upper and lower electrodes is 55m
respectively. The actuating voltage is about 50 V
and the switching time Toff and Ton are about 5 and 12 ms
respectively. The computed results show that the air squeeze film damping is an important factor for the study of dynamic response on micro-actuator. Finally
an optical technique is described for the measurement of the actuating voltage and switching time of the device
and the difference between the experimental results and theoretical datum is discussed.
Local structural disorder in the organic molecular crystals
期刊论文
iSwitch采集
Chemical journal of chinese universities-chinese, 1997, 卷号: 18, 期号: 12, 页码: 1978-1981
作者:
Lu, Y
;
Wang, SC
;
Zheng, QT
;
Liu, W
;
Li, FH
收藏
  |  
浏览/下载:15/0
  |  
提交时间:2019/05/09
Crystal structure
Conformation difference
Structural disorder