中国科学院机构知识库网格系统: 检索

Special Cases in Failure Analysis: Research on the Optimal Confidence Limit Evaluation by Zero-Failure Data 期刊论文 OAI收割
Journal of Failure Analysis and Prevention, 2020, 卷号: 20, 页码: 1638–1643
作者: Li HY(李海洋); Zheng ZY(郑泽宇); Yang ZH(杨子豪); Xu C(徐晨)

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收藏 | 浏览/下载：33/0 | 提交时间：2020/08/29

Reliability evaluation Zero-failure data Weibull distribution Confidence limit assessment method

Limit theorems with rate of convergence under sublinear expectations 期刊论文 OAI收割
BERNOULLI, 2019, 卷号: 25, 期号: 4A, 页码: 2564-2596
作者: Fang, Xiao; Peng, Shige; Shao, Qi-Man; Song, Yongsheng

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收藏 | 浏览/下载：80/0 | 提交时间：2020/01/10

central limit theorem G-normal distribution law of large numbers rate of convergence Stein's method sublinear expectation

The physiological cold tolerance of warm-climate plants is correlated with their latitudinal range limit 期刊论文 OAI收割
BIOLOGY LETTERS, 2018, 卷号: 14, 期号: 8, 页码: -
作者: Wen, Yin; Qin, De-wen; Leng, Bing; Zhu, Yun-fei; Cao, Kun-fang

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收藏 | 浏览/下载：33/0 | 提交时间：2018/11/02

Cold Tolerance Distribution Limit F-v/f-m Chlorophyll Fluorescence

Parameter optimization of passive dynamic walking biped with knees (EI CONFERENCE) 会议论文 OAI收割
2012 2nd International Conference on Materials Science and Information Technology, MSIT 2012, August 24, 2012 - August 26, 2012, Xi'an, Shaan, China
作者: Zhang P.

收藏 | 浏览/下载：21/0 | 提交时间：2013/03/25

A method to find the optimized parameter values of passive dynamic walking biped is presented. The effects of biped physical parameters on the stability property of passive gaits are studied by simulation experiments. The chosen parameters include the mass distribution length of leg and slope angle. The stability property of passive walking limit cycles is used as criterion of optimization calculation including the orbital stability described by eigen-values of linearized Poincare map and the global property described by size of attraction region. The simulation results show how the stability of limit cycle varies when physical parameters of the passive biped change. The work is useful to explore the inherent property of passive dynamic walking and can be used as an important instruction in the mechanical design of biped robots based on principle of passive dynamic walking. (2012) Trans Tech Publications Switzerland.

Far-field focusing of laser beam based on digital image processing techniques (EI CONFERENCE) 会议论文 OAI收割
Optoelectronic Imaging and Multimedia Technology, October 18, 2010 - October 20, 2010, Beijing, China
作者: Zhao S.; Tian Y.-Z.; Liu L.-S.; Guo J.; Zhang H.-Y.

收藏 | 浏览/下载：28/0 | 提交时间：2013/03/25

In order to lead the laser beam transmit in the atmosphere convergently an experiment of laser focus at the distance of 450m and 300m has been operated in the outdoor place. The actual manipulations are as follows: Firstly the laser was collimated by a beam expander then the near-parallel laser beam was transmitted with a Galileo telescope system and the distance between the concave lens and the convex lens can be tuned through a precise displacement platform so the focus of the system changed due to the tiny displacement of the concave lens. Secondly the average power of the laser spot can be measured using power meter the power is 47.67mW and the standard deviation is 0.67mW while the focal length is 450m. Thirdly the energy distribution was found through the laser beam analyzer. The spot images were saved using the beam analyzer then the saved image can be processed with Matlab software afterwards. The function named EDGE and Sobel operator was used in the pre-processing of the saved image then method of median filter was used in the course of image de-noising and 53H filter was adopted in the signal analysis. The diameter of laser spot was obtained by the method above the diameter is 5.56mm and the standard deviation is 0.24mm. The spot center excursion is 0.56mm it is 10.43% of the total diameter of the laser spot. At last the key factors of the energy dissipation in the focusing system can be summarized as follows: restriction of the diffraction limit attenuation in the atmosphere geometrical aberration of optical system and the diffraction limit and the geometrical aberration are significant in the three factors above so we can reduce the impact of the both factors during the design of optical system. The reliable referenced data of the system design can be acquired through the primary experiment research. 2010 SPIE.

Bioenergetic responses of sub-adult sea cucumber Apostichopus japonicus (Selenka) (Echinodermata: Holothuroidea) to temperature with special discussion regarding its southernmost distribution limit in China 期刊论文 OAI收割
JOURNAL OF THERMAL BIOLOGY, 2009, 卷号: 34, 期号: 6, 页码: 315-319
作者:

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收藏 | 浏览/下载：53/0 | 提交时间：2010/12/22

Sea Cucumber Apostichopus Japonicus Temperature Bioenergetic Responses Global Ocean Warming Geographical Distribution Limit Northward Shift

Design and tolerance analysis of compensator for high order aspheric surface testing (EI CONFERENCE) 会议论文 OAI收割
2009 International Conference on Optical Instruments and Technology - Optoelectronic Measurement Technology and Systems, October 19, 2009 - October 22, 2009, Shanghai, China
作者: Chen X.; Liu W.; Chen X.; Chen X.

收藏 | 浏览/下载：29/0 | 提交时间：2013/03/25

High accuracy is required in surface testing of 90nm nodal point lithography projecting lens. By comparing various aspheric surface testing methods the structure layout of the compensator is a meniscus positive lens combined with a Plano-convex positive lens. The design results indicate that: primary and high order aberrations are balanced well we adopt Offner null compensator to test the aspheric surface in the point diffraction interferometer at last. In this paper MTF exceeds diffraction limit an Offner compensator is presented on the base of the third order aberration theory to test concave aspheric surface root-mean-square (RMS) of wave front error /167. The F-number of the system can achieve F/1.64. By the analysis of the process of aspheric surface testing with the designed system the optical construction parameters of which is determined by introducing equal-quantities spherical aberration to compensate all orders of aspheric coefficients. The field of view of the system is 0.02 a loosen distribution of the tolerance was presented based on the accuracy of measuring apparatus. 2009 SPIE.

Implementation of upper limit calculation for a Poisson variable by Bayesian approach 期刊论文 OAI收割
CHINESE PHYSICS C, 2008, 卷号: 32, 期号: 2, 页码: #REF!
作者: Zhu YS(朱永生); Zhu, YS

收藏 | 浏览/下载：19/0 | 提交时间：2016/04/12

upper limit systematic uncertainties Poisson distribution Bayesian statistics

Implementation of upper limit calculation for a Poisson variable by Bayesian approach 期刊论文 OAI收割
中国物理C, 2008, 期号: 2, 页码: 126-129
作者: Zhu YS(朱永生)

收藏 | 浏览/下载：19/0 | 提交时间：2015/12/21

upper limit systematic uncertainties Poisson distribution Bayesian statistics

Upper limit for Poisson variable incorporating systematic uncertainties by Bayesian approach 期刊论文 OAI收割
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2007, 卷号: 578, 期号: 1, 页码: 322-328
作者: Zhu YS(朱永生); Zhu, Y

收藏 | 浏览/下载：26/0 | 提交时间：2016/06/27

Bayes statistics upper limit Poisson distribution systematic uncertainty