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长春光学精密机械与物... [4]
成都山地灾害与环境研... [2]
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会议论文 [4]
期刊论文 [4]
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Superelevation analysis of the debris flow curve in Xiedi gully, China
期刊论文
OAI收割
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT, 2020, 页码: DOI: 10.1007/s10064-020-01999-1
作者:
Wang, Zhuang
;
You, Yong
;
Zhang, Guangze
;
Feng, Tao
;
Liu, Jinfeng
  |  
收藏
  |  
浏览/下载:23/0
  |  
提交时间:2020/12/10
Debris flow
Velocity
Superelevation
Particle size distribution
Calculation formula
Calculating debris flow density based on grain-size distribution
期刊论文
OAI收割
LANDSLIDES, 2019, 卷号: 16, 期号: 3, 页码: 515-522
作者:
  |  
收藏
  |  
浏览/下载:34/0
  |  
提交时间:2019/04/15
Debris flow
Flow density
Grain-size distribution
Distribution parameters
Calculation formula
Measurement error analysis of binocular stereo vision: effective guidelines for bionic eyes
期刊论文
OAI收割
IET SCIENCE MEASUREMENT & TECHNOLOGY, 2017, 卷号: 11, 期号: 7, 页码: 829-838
作者:
Wang, Qingbin
;
Yin, Yingjie
;
Zou, Wei
;
Xu, De
;
Yin YJ(尹英杰)
  |  
收藏
  |  
浏览/下载:43/0
  |  
提交时间:2018/01/04
Measurement Errors
Stereo Image Processing
Biocybernetics
Spatial Variables Measurement
Feature Extraction
Measurement Error Analysis
Binocular Stereo Vision
Bionic Eyes
Active Cameras
Rotation Angle Errors
Image Feature Extraction Errors
Depth Measurement
Calculation Formula
Angular Velocity
The approximate calculation of atmospheric path radiance in close range and horizontal direction (EI CONFERENCE)
会议论文
OAI收割
2012 International Conference on Sensors, Measurement and Intelligent Materials, ICSMIM 2012, December 26, 2012 - December 27, 2012, Guilin, China
作者:
Sun Z.
;
Chen Y.
;
Zhang Y.
收藏
  |  
浏览/下载:31/0
  |  
提交时间:2013/03/25
Atmospheric path radiance is the key factor in the accuracy of objective radiation measurement. In the traditional radiation character measurements
it is compared with the results of MODTRAN and measurement in experiment. It is revealed that the accuracy of software is 7.8%
under the help of the atmospheric observation equipment
and the formula is 4.9%
MODTRAN and other software likewise
which could demonstrate the validity of the pproximate calculation formula in close range and horizontal direction. In this article
the indeterminacy rate could be around 10~20%
in the process of deducing and experiment
it is highly restricts the measurement accuracy of objective radiation. For this reason
the validity of the approximate calculation formula in close range and horizontal direction is fully proved
it is quite significant to develop the study of measure and calculation in path radiance. The approximate calculation formula for path radiance in close range and horizontal direction is expressed in this article
which supply a new method in approximate calculation of path radiance for objective radiation measurement. (2013) Trans Tech Publications
Switzerland.
Transferring error analysis of reflex light-tube in azimuth aiming system (EI CONFERENCE)
会议论文
OAI收割
2012 5th International Symposium on Computational Intelligence and Design, ISCID 2012, October 28, 2012 - October 29, 2012, Hangzhou, China
作者:
Zhao Y.
;
Zhao Y.
;
Zhao Y.
收藏
  |  
浏览/下载:29/0
  |  
提交时间:2013/03/25
According to the analysis of structural type and light transfer characteristics of azimuth aiming systems
the calculation formula for the transferring error based on the adjustment and installation error was established
and theoretical simulation was carried out
which provided a theoretical basis for the application of reflex light-tube in azimuth aiming systems. 2012 IEEE.
Design of aspherical surfaces for panoramic imagers using multipopulations genetic algorithm (EI CONFERENCE)
会议论文
OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, November 19, 2008 - November 21, 2008, Chengdu, China
作者:
Jin C.-S.
;
Wang L.-P.
;
Liang Z.-Z.
收藏
  |  
浏览/下载:27/0
  |  
提交时间:2013/03/25
A design method of aspherical surface for panoramic imaging system with two mirrors using multi-populations genetic algorithms is proposed. Astigmatism induced by mirrors may significantly compromise image resolution. To solve this problem
we induced algebraic expression of astigmatism in panoramic imager based on generalized Coddington equation and theory of geometric optics. Then
we propose an optimization process for mirror profile design to eliminate astigmatism and provide purposely-designed projection formula with aid of MPGA. A series of polynomial expressions of aspherical surfaces are obtained and procedures of the design are presented. In order to facilitate ray tracing and aberration calculation
even asphere surface model is obtained by using of hybrid schemes combining MPGA and damped least squares. Finally
a prototype of the catadioptric panoramic imager has been developed and panoramic ring image is obtained. 2009 SPIE.
The influence investigation of laser cutting path on the resistance of chip resistors (EI CONFERENCE)
会议论文
OAI收割
Lasers in Material Processing and Manufacturing II, November 10, 2004 - November 12, 2004, Beijing, China
作者:
Wang Z.
;
Wang Z.
收藏
  |  
浏览/下载:17/0
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提交时间:2013/03/25
Laser trimming adjusts the resistance of chip resistors accurately. The laser-cutting path that is vertical to the current flow is called transverse cutting. It increases the resistance quickly. The laser-cutting path that is parallel to the current flow is called ordinate cutting. It increases the resistance slowly. Using numerical results of resistance-calculation formula
the influence of transverse cutting on the resistance is analyzed. With resistor-subsection method
the relationship of resistance and ordinate cutting is studied. And quantitative formulae of them are given. The conclusions can provide some control strategies to improve the trimming precision and trimming efficiency.
Calculation formula for apparent electrical resistivity of high porosity metal materials
期刊论文
OAI收割
Science in China Series E-Technological Sciences, 1999, 卷号: 42, 期号: 3, 页码: 294-301
P. S. Liu
;
C. Fu
;
T. F. Li
收藏
  |  
浏览/下载:10/0
  |  
提交时间:2012/04/14
high porosity material
electrical resistivity
calculation formula
deduction
foams