机构

• 长春光学精密机械与物... [3]
• 成都山地灾害与环境研... [2]
• 力学研究所 [1]
• 金属研究所 [1]
• 武汉岩土力学研究所 [1]
• 沈阳自动化研究所 [1]
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采集方式

• OAI收割 [10]

内容类型

• 会议论文 [5]
• 期刊论文 [5]

发表日期

• 2023 [1]
• 2020 [2]
• 2017 [1]
• 2013 [1]
• 2011 [1]
• 2010 [1]
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学科主题

• 固体力学::冲击动力... [1]
• 材料科学与物理化学 [1]

筛选

浏览/检索结果: 共10条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 A bilayer array metamaterial based on silicon carbon foam/FeSiAl for broadband electromagnetic absorption 期刊论文  OAI收割 JOURNAL OF ALLOYS AND COMPOUNDS, 2023, 卷号: 954, 页码: 12 作者:  Yan, Liuliu;  Wang, Yuansheng;  Li, Wanchong;  Yin, Sheng;  Huang, Wei   |  收藏  |  浏览/下载：8/0  |  提交时间：2024/01/07 EM absorption  SiC foam  FeSiAl  Geometrical parameters  Metamaterial   Borehole Cross-Sectional Shape Analysis under in Situ Stress 期刊论文  OAI收割 INTERNATIONAL JOURNAL OF GEOMECHANICS, 2020, 卷号: 20, 期号: 6, 页码: 6 作者:  Han, Zengqiang;  Wang, Chuanying;  Wang, Yiteng;  Wang, Chao   |  收藏  |  浏览/下载：24/0  |  提交时间：2021/05/25 Borehole geometrical shape  Stress relief method  In situ stress  Ellipse shape parameters   Experimental investigations of the evolution of step-pools in rills with heterogeneous soils in Yuanmou Dry-Hot Valley, SW China 期刊论文  OAI收割 CATENA, 2020, 卷号: 194, 页码: 104690 作者:  Deng Qingchun;  Liu Hui;  Cheng Weihua;  Yang Haiqing;  Liu Gangcai   |  收藏  |  浏览/下载：31/0  |  提交时间：2020/10/23 Step-pool evolution  Geometrical parameters  Field-scouring experiment  Rill  Statistical analysis   Research on the dimensions of the multi-fingered robotic hand based on underactuated linkage mechanism 会议论文  OAI收割 Xiamen, China, October 20-22, 2017 作者:  Liu YW(刘玉旺);  Wang FH(王福华);  Liu YM(刘玉梅);  Gui LS(郭良帅)   |  收藏  |  浏览/下载：19/0  |  提交时间：2018/12/24 Underactuated hand  Grasp configurations  Stability  Geometrical parameters   Geometrical scaling law for laser shock processing 期刊论文  OAI收割 JOURNAL OF APPLIED PHYSICS, 2013, 卷号: 114, 期号: 4, 页码: 043105/1-043105/9 作者:  Wu XQ(吴先前);  Tan QM(谈庆明);  Huang CG(黄晨光) 收藏  |  浏览/下载：24/0  |  提交时间：2013/09/27 Physical properties  Controlling mechanism  Dimensional analysis  Dimensionless parameters  Geometrical scaling  Laser power density  Laser shock processing  Strengthening effect  Surface residual stress   规则织构化硅片表面的制备及其润湿行为 期刊论文  OAI收割 中国表面工程, 2011, 卷号: 24, 期号: 3, 页码: 4-10 作者:  王立平;  薛群基;  陈建敏 收藏  |  浏览/下载：37/0  |  提交时间：2012/09/24 规则织构化  形状  几何参数  润湿性  regular texture  shape  geometrical parameters  wetting behavior   A design of beam shaping unit for 193nm lithography illumination system using angular spectrum theory (EI CONFERENCE) 会议论文  OAI收割 6th International Symposium on Precision Engineering Measurements and Instrumentation, August 8, 2010 - August 11, 2010, Hangzhou, China 作者:  Zhao Y.;  Zhang W.;  Zhang W.;  Li S.;  Gong Y. 收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25 Off-axis illumination (OAI) technology is widely used to enhance resolution for deep ultraviolet lithography. The realizing methods of OAI include geometrical optics method and physical optics method. However  the former has the disadvantage of weak intensity distribution controlling ability  and the latter introduces simulation errors evidently when dealing with near field diffraction propagation. A diffractive optical element (DOE) designing method using plane wave angular spectrum theory is presented in this paper. Several kinds of OAI modes at near field away from DOE can be realized  and simulation errors and the size of illuminator are also reduced. According to studying the relationships of the sampling point distance of DOE  light beam propagation distance  and the structure of the beam shaping unit  a method of determining the designing parameters is discussed. Using this method  several illumination modes are realized  and simulation results show that all diffraction efficiencies reach up to 84%. The method of DOE manufacturing is analyzed at last  and it is proven to be feasible. 2010 SPIE.   A new algorithm of image segmentation for overlapping grain image (EI CONFERENCE) 会议论文  OAI收割 ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China 作者:  Zhang X.;  Zhang X.;  Zhang X. 收藏  |  浏览/下载：14/0  |  提交时间：2013/03/25 Image segmentation is primary issue in image processing  at the same time it is principal problem in low level vision in computer vision field. It is the key technology to process image analysis  image comprehend and image depict successfully. Aim at measurement of granularity size of nonmetal grain  a new algorithm of image segmentation and parameters calculation for overlapping grain image is studied. The hypostasis of this algorithm is present some new attributes of graph sequence from discrete attribute of graph  consequently achieve that pick up the geometrical characteristics from input graph  and new graph sequence which in favor of image segmentation is recombined. The conception that image edge denoted with "twin-point" is put forward  base on geometrical characters of point  image edge is transformed into serial edge  and on recombined serial image edge  based on direction vector definition of line and some additional restricted conditions  the segmentation twin-points are searched with  thus image segmentation is accomplished. Serial image edge is transformed into twin-point pattern  to realize calculation of area and granularity size of nonmetal grain. The inkling and uncertainty on selection of structure element which base on mathematical morphology are avoided in this algorithm  and image segmentation and parameters calculation are realized without changing grain's self statistical characters.   Recent progress on asphere manufacturing and testing at CIOM (EI CONFERENCE) 会议论文  OAI收割 Advanced Optical Manufacturing and Testing Technology 2000, November 1, 2000 - November 3, 2000, Chengdu, China 作者:  Zhang X.;  Yu J.;  Zhang X. 收藏  |  浏览/下载：22/0  |  提交时间：2013/03/25 The manufacturing procedure of a 500 mm in diameter  f/2 hyperbolic primary mirror based on Computer-Controlled Polishing is introduced in detail. The mirror was finally polished to the shape accuracy of 13 nm rms and the surface roughness of 2 nm Ra. Testing methods and data analysis for different stages ranging from grinding to polishing are discussed. Some critical factors affecting the efficiency and accuracy of the grinding/polishing procedure are summarized. In addition  the preliminary work to make large off-axis asphere mirrors is presented. The difficulties in polishing and testing for both circular aperture and rectangular aperture mirrors are previewed  and a possible solution is given. To control the geometrical parameters such as radius of curvature and conic constant  a new profiler has been built  and it has proven very useful to improve the grinding efficiency. Finally  the manufacturing of small aspheres using deterministic grinding tool is also introduced. The fine grinding procedure of LOH's asphere grinding machine is presented.   Principles and methodology for the geometrical parameter calculation of BDR 会议论文  OAI收割 BEIJING, SEP 15-17, 1998 作者:  Li Xianhua;  Chen Mingzhen;  Yu Genong;  Yang Wunian;  Chi Tianhe   |  收藏  |  浏览/下载：28/0  |  提交时间：2019/03/27 satellite pixel  bi-directional reflectance  geometrical parameters  calculation