中国科学院机构知识库网格系统: 检索

基于激光诱导击穿光谱检测水稻叶片镉的研究 期刊论文 OAI收割
量子电子学报, 2020, 卷号: 37
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收藏 | 浏览/下载：27/0 | 提交时间：2020/10/26

spectroscopy laser induced breakdown spectroscopy heavy metal Cd comparison of experimental methods 光谱学激光诱导击穿光谱重金属Cd 实验方法对比

The structure optimization of unmanned underwater vehicle's wedge-ring joint based on the response surface method 会议论文 OAI收割
OCEANS 2016 - Shanghai, Shanghai, China, April 10-13, 2016
作者: Gu HT(谷海涛); Meng LS(孟令帅); Lin Y(林扬); Yi RW(衣瑞文); Yang Y(杨翊)

收藏 | 浏览/下载：32/0 | 提交时间：2016/08/10

UUV Wedge-ring joint Response surface method Central composite experimental methods

Experimental research on bearing capacity of the stainless steel fastener in neutrino central detector 期刊论文 OAI收割
JOURNAL OF TIANJIN UNIVERSITY SCIENCE AND TECHNOLOGY, 2015, 卷号: 48, 页码: 110-114
作者: Wang; Zongyi; Wang; Yuanqing; Du

收藏 | 浏览/下载：34/0 | 提交时间：2016/04/18

ABAQUS software Experimental methods Experimental research Latticed shells Neutrino detectors Stainless steel fasteners Stress levels Ultimate bearing capacity

Low-Energy RI Beam Technology and Nuclear Clusters in the Explosive pp-Chain Breakout Process 会议论文 OAI收割
作者: Kubono, S.; Yamaguchi, H.; Teranishi, T.; Yanagisawa, Y.; Hayakawa, S.

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收藏 | 浏览/下载：39/0 | 提交时间：2018/08/20

In-flight RIB technology at low energies experimental methods with RI beams nu p-process pp-chain breakout nuclear cluster structures in astrophysics

Low-Energy RI Beam Technology and Nuclear Clusters in the Explosive pp-Chain Breakout Process 会议论文 OAI收割
作者: Kubono, S.; Yamaguchi, H.; Teranishi, T.; Yanagisawa, Y.; Hayakawa, S.

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收藏 | 浏览/下载：36/0 | 提交时间：2018/08/20

In-flight RIB technology at low energies experimental methods with RI beams nu p-process pp-chain breakout nuclear cluster structures in astrophysics

A new approach to realize UART (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011, August 12, 2011 - August 14, 2011, Harbin, China
作者: Wang Y.; Wang Y.; Wang Y.; Wang Y.; Wang Y.

收藏 | 浏览/下载：41/0 | 提交时间：2013/03/25

In order to connect DSP which has synchronous serial ports to the devices implementing asynchronous communications protocol a method to implement UART communications based on programmable logic device is proposed in the paper. In the proposed method the core function of UART is integrated in CPLD with VHDL. Firstly UART data frame format and operational principle of UART were introduced after reviewing some methods to realize UART. The methods to implement UART transmitter UART receiver and baudrate generator using VHDL were illustrated in detail. Then pre-simulation and synthesize of VHDL program were executed. Finally the test with bit error rate was carried out on physical system. Experimental results indicate that 75 percent of the GLB are used by UART and the bit error rate is less than 109. The experiment was implemented utilizing the RS-422 protocol and the baudrate is 62.5kb/s. The proposed method can satisfy the system requirements of high integration stabilization low bit error rate strong anti-jamming and low cost. 2011 IEEE.

Analyse the angular velocity estimation errors of -- filter based on high sampling rate (EI CONFERENCE) 会议论文 OAI收割
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China
作者: Zhang Y.

收藏 | 浏览/下载：32/0 | 提交时间：2013/03/25

In order to get angular velocity of stabilization servo mechanism from angular position sensors -- filter based on high sampling rate was established model and error characteristics were analyzed. With the hypothesis of constant acceleration -- filter and its angular velocity transfer function were deduced. Combing with optimum parameters the effects of and sample rate on the error characteristics were evaluated. According to the requirements of stabilization servo mechanism the frequency characteristics of angular velocity transfer function are analyzed and the filter parameters are designed. The experimental which filter tracked and smoothed sinusoidal signal the results show that when the cutoff frequency of angular velocity loop is 44.9rad/s sampling period and parameters are 0.08ms and 0.01279 respectively the phase leading of angular position is 70. -- filter tracked sinusoidal signals with maximum angular velocity(30/s) and maximum angular acceleration(30/s2) the error of angular velocity estimation was 0.053/s. In the engineering of electro-optical stabilization servo mechanism -- filter can reduce noise effectively and reached the requirement of platform angular velocity estimation. Also it is one of the effective methods to get angular velocity from angular position sensors. 2011 IEEE.

Local variance based color image quality assessment method (EI CONFERENCE) 会议论文 OAI收割
2011 2nd International Conference on Advanced Measurement and Test, AMT 2011, June 24, 2011 - June 26, 2011, Nanchang, China
作者:

收藏 | 浏览/下载：31/0 | 提交时间：2013/03/25

In this paper local variance is used to describe the structural information of a color image in order to assess its quality. The representation method is different from conventional models in that some information that is sensitive to human eyes is enhanced by using local variance distribution. It encodes the local variance distribution of different channels of a color image into the three imaginary parts of a quaternion. The distance between the singular value feature vectors of the source image block and the distorted image block which are described by quaternion matrices is calculated. The experimental results show that the assessment results of the proposed assessment method are more consistent with the Human Visual System than those of the conventional assessment methods.

Study of the neural network constitutive models for turfy soil with different decomposition degree (EI CONFERENCE) 会议论文 OAI收割
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China
作者: Nie L.

收藏 | 浏览/下载：23/0 | 提交时间：2013/03/25

The turfy soil is of a special humus soil. The decomposition degree is the main factor on the physical and mechanical properties of turfy soil. To build the turfy soil constitutive model there are a few shortages such as the calculation cumbersome and low accuracy for parameter value with the method of traditional models. Furthermore those methods did not reflect the influence of strength that effected by decomposition degree of the turfy soil. In this paper the relationship of stress-strain with different decomposition degrees of turfy soil was carried out through indoor tests. Based on above experimental results an improved method which divided into different zones according to different decomposition degrees of turfy soil and calculated combining with neural network constitutive model is put forward. The result shows that the neural network of turfy soil has good fitting precision and good generalization ability. It can fully describe the influence of the turfy soil. 2011 IEEE.

Study on medical X-ray coherent scatter imaging and processing based digital flat detector (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: Li B.; Zhao J.; Li B.; Li B.; Liu J.

收藏 | 浏览/下载：34/0 | 提交时间：2013/03/25

It is introduced a novel imaging technique for medical diagnostic X-ray coherent scatter in this paper. A set of experimental equipment for X-ray coherent scatter imaging was set up with X-ray digital flat detector and medical diagnostic X-ray source. According to this equipment the scatter images obtained are made of some circles with the same center. It is vital to calculate the energy template to classify the different samples. It is difficult to separate them using the traditional threshold method due to noise and overlapped shadow. In this paper the image was transformed a binary image by using K-Means algorithm and Mathematical Morphology Methods. The effective region was extracted from the binary image inside the orthogonal energy projection space then to calculate the centroid of rings. Consequently the curve of the energy distribution was built. The experiment results show that our method is reasonable and feasible. The technique will have wide foreground of application .Besides the imaging of human bone content it can be used for various imaging of tissue and organs in biology. 2010 IEEE.