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CAS IR Grid
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长春光学精密机械与物... [4]
心理研究所 [1]
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OAI收割 [5]
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会议论文 [4]
期刊论文 [1]
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2014 [1]
2010 [1]
2007 [2]
2005 [1]
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A preliminary investigation on the relationship between virtues and pathological internet use among Chinese adolescents
期刊论文
OAI收割
Child and Adolescent Psychiatry and Mental Health, 2014, 卷号: 8, 期号: 8, 页码: 1-7
作者:
Yonghong Zhang
;
Zhihan Yang
;
Wenjie Duan
;
Xiaoqing Tang
;
Fengchun Gan
  |  
收藏
  |  
浏览/下载:23/0
  |  
提交时间:2018/03/06
Virtue
Pathological Internet use
Vitality
Conscientiousness
Relationship
Attitude determination of small, dim and high-speed targets based on multi-CMOS intersecting system (EI CONFERENCE)
会议论文
OAI收割
2nd International Conference on Information Science and Engineering, ICISE2010, December 4, 2010 - December 6, 2010, Hangzhou, China
作者:
Li M.
;
Zhao L.
;
Wang J.
收藏
  |  
浏览/下载:34/0
  |  
提交时间:2013/03/25
In order to measure attitude of small
dim and high-speed targets in shooting range
intersecting system based on multiple high-speed CMOS cameras was introduced in this paper. CMOS cameras were laid near from objects for small size
using multiple CMOS cameras to compose intersecting system for big number of targets tested
and selecting CMOS camera between CMOS and CCD for low cost and considering damage to measurement equipment of objects tested. Pitch angle and yaw angle were measured by extracting axle wire through image processing
image sequences were obtained from cameras laying on two sides. Velocity of objects was calculated by least square curve-fitting
acquiring coordinate of centroid on image received by CMOS camera laying below effective viewing field. One CMOS camera was laid on right ahead for measuring roll angle. Station mode introduced in this paper has virtue of low cost and free extending. 2010 IEEE.
Theoretical research of an improved C-V method to measure the elastic constants of nematic liquid crystal (EI CONFERENCE)
会议论文
OAI收割
Asia Display 2007, AD'07, March 12, 2007 - March 16, 2007, Shanghai, China
Kong X.
;
Jin H.
;
Huang X.
;
Liao Y.
;
Liu J. e.
收藏
  |  
浏览/下载:21/0
  |  
提交时间:2013/03/25
A more exactitude C-V method to determine the elastic constants for nematic liquid crystal is discussed. For positive nematic liquid crystal(NLC)
the threshold voltage becomes uncertain when the pretilt angle is not zero
so the value of k11 must be erroneous. To solve this problem
we report the formulas about capacitance and voltage with the pretilt angle isn't zero
present the method to determine the elastic constants -k11 and k 33 simultaneously by curvefitting. We simulate and analyze the theory of this method in virtue of MatLab. The proposed method can reduce the requirement of LC cell
increase the accuracy.
Study of high precision non-contact measurement based on CCD (EI CONFERENCE)
会议论文
OAI收割
4th International Conference on Information Technology and Applications, ICITA 2007, January 15, 2007 - January 18, 2007, Harbin, China
Lin L.
;
Yun F.
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浏览/下载:22/0
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提交时间:2013/03/25
In this paper a method that measures relatively positionrelationshipquickly and accurately between two vehicles both on a horizontal plane is introduced. When the linear CCD camera placed on the end of manipulator scans two point targets located on the other vehicle
by virtue of the spatial intersection principle and trigonometry theorem
the relative position relationship between the loading vehicles and launching ones can be gotten(i.e. the spatial coordinate parameters of x
y
z and the angle displacement ). At the same time the paper establishes that the measurement error of length is less than 1mm
by analysis of thee rror analysis and the simulation of computer. The angle displacement is less than 3
which satisfies the technical requests. So the vehicle orientation and loading missiles can be both done at the shortest time. It meets the demand of centralization between the measurement and execution. Forboth automatic transshipment and spatial position relationship measurement
the study is valuable. And the manipulator is measure device as well as executive one so that residual inherent error decreases according to identical reference principle. Therefore the measure precision can be improved greatly.
Formation and characteristics of quantum dots of wide band gap II-VI semiconductor (EI CONFERENCE)
会议论文
OAI收割
Fifth International Conference on Thin Film Physics and Applications, May 31, 2004 - June 2, 2004, Shanghai, China
Fan X. W.
;
Shan C. X.
;
Yang Y.
;
Zhang J. Y.
;
Liu Y. C.
;
Lu Y. M.
;
Shen D. Z.
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  |  
浏览/下载:28/0
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提交时间:2013/03/25
CdSe and ZnCdSe quantum dots (QDs) were grown under Stranski-Krastanow (S-K) mode by low-pressure metalorganic chemical vapor deposition (LP-MOCVD). The formation process of CdSe QDs below critical thickness was observed by atomic force microscopy (AFM). The formation mechanism of CdSe QDs below the critical thickness was due to the effect of surface diffusion and strain release. ZnCdSe QDs were grown based on the calculated critical thickness. Two kinds of variations in the ZnCdSe QDs appeared over time
the Ostwald ripening process and dot formation process. ZnSeS dots were grown under Volmer-Weber (V-W) mode. With increasing the growth duration
the size of dots becomes larger and the density decreases
which is explained by virtue of the surface free energy.