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浏览/检索结果: 共6条，第1-6条 帮助 已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 基于深度网络的社交媒体特征学习算法研究 学位论文 工学博士, 中国科学院自动化研究所: 中国科学院大学, 2015 作者:  袁召全 收藏  |  浏览/下载：158/0  |  提交时间：2015/09/02 社交媒体  深度学习  排序学习  矩阵分解  数据挖掘  soical media  deep learning  learning to rank  matrix factorization  data mining   高斯激光诱导非线性薄膜光场热场特性及超分辨图形刻写研究 学位论文 博士: 中国科学院上海光学精密机械研究所, 2014 作者:  王睿 收藏  |  浏览/下载：39/0  |  提交时间：2016/11/28 超分辨  光学非线性  薄膜  激光直写   Characteristic of fusion-brazed joint between 5052 aluminum alloy and zinc-coated steel by CO2 laser 期刊论文 Hanjie Xuebao/Transactions of the China Welding Institution, 2014, 卷号: 35, 期号: 1, 页码: 1-4 作者:  Fan, Ding;  Jiang, Kai;  Yu, Shurong;  Zhang, Jian 收藏  |  浏览/下载：19/0  |  提交时间：2020/11/14 Aluminum coatings  Brazing  Carbon dioxide  Carbon dioxide lasers  Fracture testing  Laser beam welding  Powder metals  Scanning electron microscopy  Sheet metal  Tensile strength  Tensile testing  Welds  Zinc coatings  5052 aluminum alloy  CO2 laser welding  Intermediate layers  Tensile specimens  Universal testing machines  Zinc coated sheets  Zinc coated steel sheet  Zinc-coated steel   Brazing RB-SiC used in large aperture space optical system (EI CONFERENCE) 会议论文 2011 International Conference on Materials and Products Manufacturing Technology, ICMPMT 2011, October 28, 2011 - October 30, 2011, Chengdu, China Zhang B.; Zhang Z. 收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25 Because of the sic material's superior optical characteristic  machine characteristic and hot characteristic  it becomes currently the space big aperture reflector choose firstly1. For larger aperture sic mirror  it is not economical and safe to make the monolithic body directly 2  3. The SiC mirror brazed assembly with several segments can solve these problems. In this paper  one 600 mm sic plane mirror as demonstration welded with 3 radial segments is roughly grinded to the required figure at first  then the mirror is finely grinded and polished by the technology of CCOS  the mirror figure error is less than 1/20 ( = 632.8nm) in RMS finally. The problems of the preferential removal near braze joint are solved. The methods of reducing the residual stress of mirror are discussed. At last  some measurements and experiments are carried on  and the results conclude that the brazed SiC mirror can meet the requirement of large aperture optical systems. (2011) Trans Tech Publications.   行人检测若干关键技术研究 学位论文 2011, 2011 苏松志 收藏  |  浏览/下载：3/0  |  提交时间：2016/02/14 行人检测  结构化局部边缘矩特征  结构化局部二值哈尔模式  直方图交叉核支持向量机  高效子窗口法  Pedestrian Detection  Structured Local Edge Pattern Moment  Structured Local Binary Haar Pattern  Histogram Intersection Kernel Support Vector Machine  Efficient Subwindow Search   基于电刺激的动物运动行为控制方法研究 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, 2008 作者:  王永玲 收藏  |  浏览/下载：129/0  |  提交时间：2015/09/02 动物机器人  脑机接口  电刺激  目标跟踪  位姿检测  animal robot  brain machine interface  electrical stimulation  feature tracking  poses monitoring