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Adaptive Detection and Preprocessing Method for Abnormal Wind Speed of Wind Farm Based on Deep Boltzmann Machine 期刊论文
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society, 2018, 卷号: 33, 页码: 205-212
作者:  Lin, Jie;  Wu, Butuo;  Chen, Wei
收藏  |  浏览/下载：20/0  |  提交时间：2020/11/14
Novel method for estimating the dynamic characteristics of pressure sensor in shock tube calibration test 期刊论文
REVIEW OF SCIENTIFIC INSTRUMENTS, 2015, 卷号: 86, 页码: 065002
作者:  Li, Qiang;  Wang, Zhongyu;  Wang, Zhuoran;  Yan, Hu
收藏  |  浏览/下载：3/0  |  提交时间：2020/01/06
Seeing Chinese characters in action: An fMRI study of the perception of writing sequences 期刊论文
大脑与语言, 2011
Yu, Hongbo; Gong, Lanyun; Qiu, Yinchen; Zhou, Xiaolin
收藏  |  浏览/下载：3/0  |  提交时间：2015/11/10
Far-field focusing of laser beam based on digital image processing techniques (EI CONFERENCE) 会议论文
Optoelectronic Imaging and Multimedia Technology, October 18, 2010 - October 20, 2010, Beijing, China
Zhang H.-Y.; Zhao S.; Guo J.; Liu L.-S.; Tian Y.-Z.
收藏  |  浏览/下载：20/0  |  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.  
Storage and compression design of high speed CCD (EI CONFERENCE) 会议论文
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 19, 2008 - November 21, 2008, Chengdu, China
Cai X.; Zhai L. P.
收藏  |  浏览/下载：47/0  |  提交时间：2013/03/25
In current field of CCD measurement  large area and high resolution CCD is used to obtain big measurement image  so that  speed and capacity of CCD requires high performance of later storage and process system. The paper discusses how to use SCSI hard disk to construct storage system and use DSPs and FPGA to realize image compression. As for storage subsystem  Because CCD is divided into multiplex output  SCSI array is used in RAID0 way. The storage system is composed of high speed buffer  DMA controller  control MCU  SCSI protocol controller and SCSI hard disk. As for compression subsystem  according to requirement of communication and monitor system  the output is fixed resolution image and analog PAL signal. The compression means is JPEG2000 standard  in which  9/7 wavelets in lifting format is used. 2 DSPs and FPGA are used to compose parallel compression system. The system is composed of FPGA pre-processing module  DSP compression module  video decoder module  data buffer module and communication module. Firstly  discrete wavelet transform and quantization is realized in FPGA. Secondly  entropy coding and stream adaption is realized in DSPs. Last  analog PAL signal is output by Video decoder. Data buffer is realized in synchronous dual-port RAM and state of subsystem is transfer to controller. Through subjective and objective evaluation  the storage and compression system satisfies the requirement of system. 2009 SPIE.  
基于内容的连续音频流分割与标注技术研究 学位论文
工学博士, 中国科学院自动化研究所: 中国科学院研究生院, 2007
作者:  张世磊
收藏  |  浏览/下载：93/0  |  提交时间：2015/09/02
房间声学信号处理中的非线性现象研究 学位论文
: 四川大学, 2007
作者:  徐自励
收藏  |  浏览/下载：3/0  |  提交时间：2019/04/19
Interaction between plasminogen activator inhibitor type-2 and pre-mRNA processing factor 8 期刊论文
ACTA BIOCHIMICA ET BIOPHYSICA SINICA, 2004, 卷号: 36, 期号: 9
作者:  Fan, J;  Zhang, YQ;  Li, P;  Tong, C;  Tan, L
收藏  |  浏览/下载：4/0  |  提交时间：2019/12/27

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