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浏览/检索结果: 共22条，第1-10条 帮助

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Local climate zone mapping using remote sensing: a synergetic use of daytime multi-view Ziyuan-3 stereo imageries and Luojia-1 nighttime light data 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF DIGITAL EARTH, 2023, 卷号: 16, 期号: 1, 页码: 3456-3488
作者:  Liang, Ying;  Cao, Shisong;  Du, Mingyi;  Lu, Linlin;  Jiang, Jie
  |  收藏  |  浏览/下载：72/0  |  提交时间：2023/10/09
The structural diversity of ibuprofen sustained-release pellets on the same goal of bioequivalence consistency 期刊论文  OAI收割
MATERIALS & DESIGN, 2022, 卷号: 217, 页码: 11
作者:  Cao, Zeying;  Sun, Ningyun;  Sun, Hongyu;  Liu, Jun;  Li, Jing
  |  收藏  |  浏览/下载：20/0  |  提交时间：2023/04/10
Projection-based and cross-validated estimation in high-dimensional Cox model 期刊论文  OAI收割
SCANDINAVIAN JOURNAL OF STATISTICS, 2021, 页码: 20
作者:  Zhang, Haixiang;  Huang, Jian;  Sun, Liuquan
  |  收藏  |  浏览/下载：14/0  |  提交时间：2021/04/26
Inverse analysis for rock mechanics based on a high dimensional model representation 期刊论文  OAI收割
INVERSE PROBLEMS IN SCIENCE AND ENGINEERING, 2021, 页码: 21
作者:  Zhao, Hongbo;  Chen, Bingrui
  |  收藏  |  浏览/下载：23/0  |  提交时间：2021/05/25
Applications of differential barometric altimeter in ground cellular communication positioning network 期刊论文  OAI收割
IET SCIENCE MEASUREMENT & TECHNOLOGY, 2020, 卷号: 14, 期号: 3, 页码: 322-331
作者:  Hu, Zhengqun;  Zhang, Lirong;  Ji, Yuanfa
  |  收藏  |  浏览/下载：25/0  |  提交时间：2021/12/06
cellular radio  height measurement  measurement errors  Global Positioning System  altimeters  barometers  least squares approximations  Kalman filters  surface fitting  spread spectrum communication  compensation  matrix algebra  GPS  signal message structure  power spectrum  spread spectrum ranging signal  fitting parameters  least-square solution  calibration compensation  system noise variance matrix  measurement noise variance matrix  multibase station correction  height information correction calculation  DBA system  systematic performance  differential barometric altimeter  ground cellular communication positioning network  measurement datum distribution  altitude positioning error  Global Positioning System  differential barometric altimetry system  systematic implementation level  continuous altitude measurement  precise altitude measurement  DBA systematic implementation aspect  two dimensional curved surface fitting function  sensor measurement correction  filtering effect  Kalman filter  measuring station  multiBSs  navigation fusion  
Numerical study on flow-induced vibration characteristics of three-dimensional hydrofoil in cavitating flow 会议论文  OAI收割
San Francisco, CA, United states, July 28, 2019 - August 1, 2019
作者:  Wang C(王畅);  Liu YQ;  Du TZ(杜特专);  Wang YW(王一伟)
  |  收藏  |  浏览/下载：24/0  |  提交时间：2020/11/20
基于附加参数光束法平差的非量测型数码相机检校研究/Calibration of a Nonmetric Camera Based on Bundle Adjustment with Additional Parameters[J] 期刊论文  OAI收割
遥感信息, 2014, 卷号: 29, 期号: 3, 页码: 14-18
作者:  曹良中;  杨辽;  李欣;  张伟阁;  贾洋
  |  收藏  |  浏览/下载：25/0  |  提交时间：2017/12/29
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：27/0  |  提交时间：2013/09/27
Structural design of large aperture rectangular mirror for space telescope (EI CONFERENCE) 会议论文  OAI收割
2nd International Conference on Civil Engineering and Transportation, ICCET 2012, October 27, 2012 - October 28, 2012, Guilin, China
作者:  Li Z.;  Li Z.
收藏  |  浏览/下载：43/0  |  提交时间：2013/03/25
Structural design of large aperture mirror is one of the key technologies for space telescope development. To meet the requirements of high stiffness  strength and thermal dimensional stability  some factors such as support scheme  materials selection  lightweight design and flexible support design were taken into account. The three supports location of the mirror was determined according to the modal analytical solution. By adjusting the parameters of flexure hinge  influences of gravity  assembly stress and thermal stress on the mirror were reduced obviously. Finite element analysis (FEA) results indicate that the surface accuracy reach to rms10.2nm and 10.8nm under the gravity along optical axis direction and 5C uniform temperature rise respectively  the fundamental frequency of the mirror component is 268Hz. Dynamics test shows that the first order natural frequency is 256Hz  which shows an error less than 5% compared to FEA results. (2013) Trans Tech Publications  Switzerland.  
Research on the torque characteristic of disc micromotor on axial magnetic field (EI CONFERENCE) 会议论文  OAI收割
2012 2nd International Conference on Consumer Electronics, Communications and Networks, CECNet 2012, April 21, 2012 - April 23, 2012, Three Gorges, China
Liu B.
收藏  |  浏览/下载：52/0  |  提交时间：2013/03/25
In order to increase the electromagnetic torque density of micromotor with axial magnetic field  numerical analysis of permanent magnetic field and electromagnetic torque were deduced and the key factors of increasing torque density of micromotor was obtained. The numerical analysis of three-dimensional magnetic field in air gap produced by spliced sector permanent magnetic poles is done  and the way of improving flux density and permanent magnet use efficiency are given through investigating the influence of magnet thickness  height of air gap and pole interval rate and other parameters to air gap flux density and leakage flux. Based on the test of axial magnetic field and torque characteristic of micromotor  the analysis of micromotor magnetic field and calculation of torque are verified  meanwhile using the plane stator with 0.7mm thickness assemble micromotor having minimum air gap height of 1mm and its torque constant up to 3.8mNm/A. 2012 IEEE.