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浏览/检索结果: 共19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 Experimental investigation and intelligent control of the magnus anti-rolling device for ship stability at zero speed 期刊论文  OAI收割 OCEAN ENGINEERING, 2024, 卷号: 308, 页码: 12 作者:  Lin, Jianfeng;  Wang, Shizhao;  Han, Yang;  Yao, Hua-Dong;  Su, Yumin   |  收藏  |  浏览/下载：10/0  |  提交时间：2024/10/08 Ship stability  Magnus effect  Anti -rolling device  Intelligent control  Experimental investigation  Zero -speed conditions   Multiple global changes drive grassland productivity and stability: A meta-analysis 期刊论文  OAI收割 JOURNAL OF ECOLOGY, 2022, 卷号: 110, 期号: 12, 页码: 2850-2869 作者:  Su, Jishuai;  Zhao, Yujin;  Xu, Fengwei;  Bai, Yongfei   |  收藏  |  浏览/下载：3/0  |  提交时间：2024/03/07 ecosystem stability  environmental conditions  experimental duration  global change ecology  plant functional group composition  primary productivity  species richness   Analysis of typical working conditions and experimental research of friction stir welding robot for aerospace applications 期刊论文  OAI收割 Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2021, 卷号: 235, 期号: 6, 页码: ‏ 1045-1056 作者:  Luo HT(骆海涛);  Wu TK(武廷课);  Fu J(富佳);  Zhao FQ(赵烽群)   |  收藏  |  浏览/下载：40/0  |  提交时间：2020/08/01 Friction stir welding  welding robot  typical conditions  kinematics  trajectory planning  experimental study   Mid-Pliocene global land monsoon from PlioMIP1 simulations 期刊论文  OAI收割 PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, 2018, 卷号: 512, 期号: 特刊：SI, 页码: 56-70 作者:  Li, XY (Li, Xiangyu);  Jiang, DB (Jiang, Dabang);  Tian, ZP (Tian, Zhiping);  Yang, YB (Yang, Yibo)   |  收藏  |  浏览/下载：171/0  |  提交时间：2019/05/09 Chinese Loess Plateau  Western Qaidam Basin  General-circulation Model  Organic-carbon Burial  Asian Summer Monsoon  Experimental-design  Boundary-conditions  Eolian Deposition  Warm Period  Neotropical Paleobotany   Study of high pressure structural stability of CeO_2 nanoparticles 期刊论文  OAI收割 Chinese Physics C, 2013, 期号: 9, 页码: 94-98 作者:  Liu B(刘波);  Liu R(刘然);  Li QJ(李全军);  Yao MG(姚明光);  Zou B(邹勃) 收藏  |  浏览/下载：9/0  |  提交时间：2015/12/25 CeO_2 nanomaterials  high pressure  experimental conditions  grain size efect  structural stability   Study of high pressure structural stability of CeO2 nanoparticles 期刊论文  OAI收割 CHINESE PHYSICS C, 2013, 卷号: 37, 期号: 9, 页码: 98003 作者:  Liu, B;  Liu, R;  Li, QJ;  Yao, MG;  Zou, B 收藏  |  浏览/下载：18/0  |  提交时间：2016/04/08 CeO2 nanomaterials  high pressure  experimental conditions  grain size effect  structural stability   Retrieval of snow depth in Northeast China using FY-3B/MWRI passive microwave remote sensing data (EI CONFERENCE) 会议论文  OAI收割 Satellite Data Compression, Communications, and Processing VIII, August 12, 2012 - August 13, 2012, San Diego, CA, United states Ren R.; Gu L.; Chen H.; Cao J. 收藏  |  浏览/下载：136/0  |  提交时间：2013/03/25 Comparing with optical remote sensing techniques  passive remote sensing data have been proved to be effective for observing snowpack parameters such as snow depth and snow water equivalent  which can penetrate snowpack without clouds interferences. The Microwave Radiation Imager (MWRI) loaded on the Chinese FengYun-3B (FY-3B) satellite is gradually used in the global environment research through November  2011. In this paper  we proposed a snow depth retrieval algorithm to estimate snow depth in Northeast China using MWRI passive microwave remote sensing data. A decision tree method of snow identification was firstly designed to distinguish different snow cover conditions in order to eliminate other interference signals. After using the proposed decision tree method  the processing results were further used to retrieve the snow depth in Northeast China. Finally  the practical snow depth data and the MODIS data were collected for the accuracy assessment of the proposed snow depth retrieval method. The experimental results demonstrated that the RMSE of snow depth used the proposed method was approximately 3 cm in Northeast China. 2012 SPIE.   Energy transition between Yb3+-Tm3+-Gd3+ in Gd3+, Yb3+ and Tm3+ Co-doped fluoride nanocrystals (EI CONFERENCE) 会议论文  OAI收割 17th International Conference on Dynamical Processes in Excited States of Solids, DPC'10, June 20, 2010 - June 25, 2010, Argonne, IL, United states 作者:  Zhang J.;  Zhang J.;  Zhang J. 收藏  |  浏览/下载：23/0  |  提交时间：2013/03/25 YF3: 20%Gd3+  20%Yb3+  0.5%Tm3+ nanocrystal has been synthesized by a hydrothermal method. The upconversion (UC) emission and energy transfer progresses between Gd3+-Yb 3+-Tm3+ under a 980-nm continuous wave semiconductor laser diode excitation have been explored. The experimental results show that the violet and ultraviolet (UV) enhancement with Tm3+ upconversion emission occurs in the nanocrystal  and in the same time the UC emissions of Gd3+ from 6D9/2  6IJ  6P5/2  and 6P7/2 states to the ground state 8S7/2 are obtained  too. The dynamic analysis implies that  under 980-nm excitation  the nanocrystal dimension plays a key role in the efficient energy transfer processes between Gd3+-Yb 3+-Tm3tt based on the energy matching conditions. 2011 Published by Elsevier B.V.   3R intersection target positioning in real time based on distance (EI CONFERENCE) 会议论文  OAI收割 2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China Nengwei W.; Juan C.; Jian C. 收藏  |  浏览/下载：13/0  |  提交时间：2013/03/25 The positioning error based on angle  angle-distance or single station positioning increases with the distance increasing. 3R target positioning based on distance can obtain the high precision measurements in long distance. Here we give the 3R model for the intersection positioning  provide the two necessary conditions for getting the optimum intersection point. The experimental results show that the intersection precision based on angle is over 2m and will degrade greatly with the increasing of distance while the one based on 3R model will improve and the error decrease gradually. That the precision of the distance measurement is about 1m means the 3R model is better than the angle positioning  which can compensate the drawbacks of the angle positioning at short distance. 2010 IEEE.   SoC test data compression technique based on RLE-G (EI CONFERENCE) 会议论文  OAI收割 2010 International Conference on Advanced Measurement and Test, AMT 2010, May 15, 2010 - May 16, 2010, Sanya, China 作者:  Liu W.;  Yang L.;  Yang L.;  Zheng X. 收藏  |  浏览/下载：32/0  |  提交时间：2013/03/25 Test data compression has been an effective way to reduce test data volume and test time  as well as to solve automatic test equipment (ATE) memory and bandwidth limitation. We analyze the limitations of current test data compression algorithm and draw on the previous experience to deduce an optimal compression coding model suitable for SoC test data. In addition  in this paper we make full use of the relevance of the test vectors and the advantages of statistical coding to present an efficient test data compression method RLE-G based on the coding model  and give the RLE-G the optimal compression efficiency of the boundary conditions and realization steps. The experimental results for ISCAS 89 benchmark circuits demonstrate RLE-G have the excellent advantages of high compression ratio. (2010) Trans Tech Publications.