中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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CAS IR Grid
机构
长春光学精密机械与物... [4]
金属研究所 [1]
地理科学与资源研究所 [1]
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OAI收割 [9]
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会议论文 [4]
期刊论文 [4]
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The molecular mechanism of WRINKLED1 transcription factor regulating oil accumulation in developing seeds of castor bean
期刊论文
OAI收割
PLANT DIVERSITY, 2023, 卷号: 45, 期号: 4, 页码: 469-478
作者:
Tan,Qing
;
Han,Bing
;
Haque,Mohammad Enamul
;
Li,Ye -Lan
;
Wang,Yue
  |  
收藏
  |  
浏览/下载:19/0
  |  
提交时间:2024/05/09
Castor bean
WRI transcription factor
Oil accumulation
Developing seeds
Lipid gene
FATTY-ACID BIOSYNTHESIS
KEY REGULATOR
ARABIDOPSIS
DOMAIN
EXPRESSION
INDUSTRIAL
PATHWAYS
STORAGE
GENES
LIGHT
Determining the impact of key climatic factors on geographic distribution of wild Akebia trifoliate
期刊论文
OAI收割
ECOLOGICAL INDICATORS, 2020, 卷号: 112, 页码: 9
作者:
Wang, Li
;
Deng, Huanguang
;
Qiu, Xinfa
;
Wang, Peifa
;
Yang, Fei
  |  
收藏
  |  
浏览/下载:22/0
  |  
提交时间:2020/05/19
Wild Akebia trifoliate
Geographical distribution
Key climate factors
Factor analysis method
GIS
China
基于主体功能区的区域可持续发展协调性分析——以新疆北疆为例
学位论文
OAI收割
北京: 中国科学院大学, 2019
作者:
钟佳利
  |  
收藏
  |  
浏览/下载:93/0
  |  
提交时间:2021/12/10
主体功能区
可持续发展
协调发展度模型
关键影响因素
Main Functional Area
Sustainable Development
Coordinated Development Model
Key Influencing Factor
Fatigue life prediction of motor-generator rotor for pumped-storage plant
期刊论文
OAI收割
ENGINEERING FAILURE ANALYSIS, 2017, 卷号: 79, 页码: 8-24
Nie, Liangliang
;
Zhang, Mengxiao
;
Zhu, Libei
;
Pang, Jianchao
;
Yao, Ge
;
Mao, Yunxian
;
Chen, Man
;
Zhang, Zhefeng
收藏
  |  
浏览/下载:76/0
  |  
提交时间:2017/08/17
Motor-generator rotor
Steel sheet
Fatigue influencing factor
Fatigue life prediction
Key part life method
Evaluation of DBPs formation from SMPs exposed to chlorine, chloramine and ozone
期刊论文
OAI收割
JOURNAL OF WATER AND HEALTH, 2017, 卷号: 15, 期号: 2, 页码: 185-195
作者:
Zhang, Beibei
;
Xian, Qiming
;
Lu, Jian
收藏
  |  
浏览/下载:56/0
  |  
提交时间:2017/06/21
bromine incorporation factor (BIF)
disinfection by-products (DBPs)
disinfection methods
influence factors
key factor
soluble microbial products (SMPs)
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:37/0
  |  
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.
Analysis of impact of gyroscope synthetical error on an electric-optical stabilized control system (EI CONFERENCE)
会议论文
OAI收割
3rd International Conference on BioMedical Engineering and Informatics, BMEI 2010, October 16, 2010 - October 18, 2010, Yantai, China
作者:
收藏
  |  
浏览/下载:24/0
  |  
提交时间:2013/03/25
As one of the key components on a seeker
EO stabilized platform on a missile
gyroscope is directly relative to errors of servo systems. Main errors of gyro
such as bias drift and scale factor nonlinearity
are added to a servo system
the result is analyzed to illuminated that how a gyro has effect on a seeker servo system. With the mathematical models of a gyro and a seeker
the principle of choosing a gyro is theoretically deduced first and then two gyros model with different main parameters are added into the same gimbals model
the errors of servo systems are compared to prove the deduction. Final conclusion is helpful for choosing proper gyros in a seeker servo system. 2010 IEEE.
Real time tracking by LOPF algorithm with mixture model (EI CONFERENCE)
会议论文
OAI收割
MIPPR 2007: Automatic Target Recognition and Image Analysis; and Multispectral Image Acquisition, November 15, 2007 - November 17, 2007, Wuhan, China
Meng B.
;
Zhu M.
;
Han G.
;
Wu Z.
收藏
  |  
浏览/下载:29/0
  |  
提交时间:2013/03/25
A new particle filter-the Local Optimum Particle Filter (LOPF) algorithm is presented for tracking object accurately and steadily in visual sequences in real time which is a challenge task in computer vision field. In order to using the particles efficiently
we first use Sobel algorithm to extract the profile of the object. Then
we employ a new Local Optimum algorithm to auto-initialize some certain number of particles from these edge points as centre of the particles. The main advantage we do this in stead of selecting particles randomly in conventional particle filter is that we can pay more attentions on these more important optimum candidates and reduce the unnecessary calculation on those negligible ones
in addition we can overcome the conventional degeneracy phenomenon in a way and decrease the computational costs. Otherwise
the threshold is a key factor that affecting the results very much. So here we adapt an adaptive threshold choosing method to get the optimal Sobel result. The dissimilarities between the target model and the target candidates are expressed by a metric derived from the Bhattacharyya coefficient. Here
we use both the counter cue to select the particles and the color cur to describe the targets as the mixture target model. The effectiveness of our scheme is demonstrated by real visual tracking experiments. Results from simulations and experiments with real video data show the improved performance of the proposed algorithm when compared with that of the standard particle filter. The superior performance is evident when the target encountering the occlusion in real video where the standard particle filter usually fails.
Key techniques of laser direct writing of fine lines on the spherical surface (EI CONFERENCE)
会议论文
OAI收割
ICO20: Optical Design and Fabrication, August 21, 2005 - August 26, 2005, Changchun, China
Liang F.
;
Hu J.
收藏
  |  
浏览/下载:23/0
  |  
提交时间:2013/03/25
The main principles of laser direct writing (LDW) system for lines on the spherical surface (SS) are discussed. It is pointed out that line profile is determined by the exposure dose distribution
which lies on the light intensity distribution of focus plane and the scanning speed. To improve the quality of line profile on the SS
several key techniques as follows are introduced. Firstly
the unique system configuration
four axes mutually intersecting at the center of the SS
is adopted
which ensures the shape of the focus be maintained circular during the writing period. Secondly
an automatic focus system (AFS) with the function of automatic focus in a certain range is introduced. Thirdly
to guarantee the linear velocity to accord with the exposure character of the photoresist all the time
an efficient arithmetic that controls motors run at appropriate angular velocity in different latitude is developed. Finally
to achieve a stable and well-behaved system so as to compensate the velocity instability resulting from unavoidable errors of mechanical and electronics factor
a powerful programmable multi-axis controller (PMAC) is utilized as the kernel element of the servocontrol system
and the curves of step response and parabolic response achieved by feedforward and PID loop tuning indicate that the location precision and velocity stability have reached a high level. The experimental results of LDW of lines on the SS work piece with a diameter 30 mm and a radius equal to 100 mm are given. The section analysis of the lines on the photoresist by the atomic force microscope (AFM) after exposure and development is performed. The results show that line width is about 3.0 m
and the steep sides of the lines are parallel to each other.