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浏览/检索结果: 共12条，第1-10条 帮助

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Identification of Multiscale Spatial Structure of Lunar Impact Crater: A Semivariogram Approach 期刊论文  OAI收割
IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING, 2021, 卷号: 14, 页码: 2731-2739
作者:  Wang, Jiao;  Ming, Dongping;  Cheng, Weiming
  |  收藏  |  浏览/下载：20/0  |  提交时间：2021/06/10
Identification of Multiscale Spatial Structure of Lunar Impact Crater: A Semivariogram Approach 期刊论文  OAI收割
IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING, 2021, 卷号: 14, 页码: 2731-2739
作者:  Wang, Jiao;  Ming, Dongping;  Cheng, Weiming
  |  收藏  |  浏览/下载：23/0  |  提交时间：2021/06/10
Performance characteristics and working fluid selection for low-temperature binary-flashing cycle 期刊论文  OAI收割
APPLIED THERMAL ENGINEERING, 2018, 卷号: 141, 页码: 51-60
作者:  Liu, Xi;  Li, Huashan;  Bu, Xianbiao;  Wang, Lingbao;  Xie, Ning
  |  收藏  |  浏览/下载：16/0  |  提交时间：2020/10/29
SOCIAL OPTIMA IN MEAN FIELD LINEAR-QUADRATIC-GAUSSIAN MODELS WITH MARKOV JUMP PARAMETERS 期刊论文  OAI收割
SIAM JOURNAL ON CONTROL AND OPTIMIZATION, 2017, 卷号: 55, 期号: 1, 页码: 429-456
作者:  Wang, Bing-Chang;  Zhang, Ji-Feng
  |  收藏  |  浏览/下载：15/0  |  提交时间：2018/07/30
Developing an Improved Parameter Estimation Method for the Segmented Taper Equation through Combination of Constrained Two-Dimensional Optimum Seeking and Least Square Regression 期刊论文  OAI收割
FORESTS, 2016, 卷号: 7, 期号: 9
作者:  Pang, Lifeng;  Ma, Yongpeng;  Sharma, Ram P.;  Rice, Shawn;  Song, Xinyu
收藏  |  浏览/下载：30/0  |  提交时间：2017/01/05
Determination of optimum process parameters in gas-assisted injection molding (EI CONFERENCE) 会议论文  OAI收割
2011 International Conference on Electrical Information and Mechatronics, ICEIM2011, December 23, 2011 - December 25, 2011, Jiaozuo, China
Zi K.; Chen L.
收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25
With finite element analysis software Moldflow  numerical simulation and studies about FM truck roof handle were conducted on gas-assisted injection molding process. The influences of melt pre-injection shot  gas pressure  delay time and melt temperature were observed by using multi-factor orthogonal experimental method. According to the analysis of the factors' impact on evaluation index  the optimized parameter combination is obtained. Therefore the optimization design of technological parameters is done. The results show that during the gas-assisted injection molding  optimum pre-injection shot is 94%  gas pressure is 15MPa  delay time is 0.5s  melt temperature is 240 C. This study provided a more practical approach for the gas-assisted injection molding process optimization.  
Optimum design of the carbon fiber thin-walled baffle for the space-based camera (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Yan Y.; Gu S.; An Y.; Jin G.
收藏  |  浏览/下载：14/0  |  提交时间：2013/03/25
The thin-walled baffle design of the space-based camera is an important job in the lightweight space camera research task for its stringent quality requirement and harsh mechanical environment especially for the thin-walled baffle of the carbon fiber design. In the paper  an especially thin-walled baffle of the carbon fiber design process was described and it is sound significant during the other thin-walled baffle design of the space camera. The designer obtained the design margin of the thin-walled baffle that structural stiffness and strength can tolerated belong to its development requirements through the appropriate use of the finite element analysis of the walled parameters influence sensitivity to its structural stiffness and strength. And the designer can determine the better optimization criterion of thin-walled baffle during the geometric parameter optimization process in such guiding principle. It sounds significant during the optimum design of the thin-walled baffle of the space camera. For structural stiffness and strength of the carbon fibers structure which can been designed  the effect of the optimization will be more remarkable though the optional design of the parameters chose. Combination of manufacture process and design requirements the paper completed the thin-walled baffle structure scheme selection and optimized the specific carbon fiber fabrication technology though the FEM optimization  and the processing cost and process cycle are retrenchment/saved effectively in the method. Meanwhile  the weight of the thin-walled baffle reduced significantly in meet the design requirements under the premise of the structure. The engineering prediction had been adopted  and the related result shows that the thin-walled baffle satisfied the space-based camera engineering practical needs very well  its quality reduced about 20%  the final assessment index of the thin-walled baffle were superior to the overall design requirements significantly. The design method is reasonable and efficient to the other thin-walled baffle that mass and work environment requirement is requirement harsh. 2011 SPIE.  
Design and analysis of power system of micro-electromechanical actuator (EI CONFERENCE) 会议论文  OAI收割
2010 2nd International Conference on Industrial Mechatronics and Automation, ICIMA 2010, May 30, 2010 - May 31, 2010, Wuhan, China
作者:  Zhang J.;  Zhang J.;  Zhang J.
收藏  |  浏览/下载：23/0  |  提交时间：2013/03/25
In order to apply the electromechanical actuator to tactical mini-missiles  maximum rotational speed of output shafts is greater than 250/s. Test results basically correspond to the requirement of technical indexes. It is proved that this analysis and design method is congruent with the design of micro-electromechanical actuators  this paper researches on the key technology such as load-bearing ability  the system bandwidth can reach 25.3Hz on the condition of no load and 23.4Hz on the condition of load  thus the method is feasible. 2010 IEEE.  rapidity and miniaturization of the micro-electromechanical actuator power system based on the ball screw. First  according to specific technical indexes  the power  electromechanical time constant and the size of the motors are screened originally through theoretical analysis. Finally  based on the characteristics of ball screw transmission  load locus of the micro-electromechanical actuator dynamic system is theoretically analyzed and the optimum speed ratio is determined through parameter optimization. The results of the double closed loop controlled test on the principle prototype show: the system can operate normally with 2.5N.m hinge moment  
Application of Optimum Perturbation Algorithm for Parameter Inversion Identification of Soil Moisture Model under Ecological Slope Protection 会议论文  OAI收割
Shanghai, PEOPLES R CHINA, NOV 07-08, 2009
作者:  Xue, Qiang;  Sheng, Qian;  Ma, Shi-jin
  |  收藏  |  浏览/下载：16/0  |  提交时间：2018/06/05
Extraction and characterization of soil hydrogenases oxidizing atmospheric hydrogen 期刊论文  OAI收割
SOIL BIOLOGY & BIOCHEMISTRY, 2008, 卷号: 40, 期号: 5, 页码: 1149-1154
作者:  Guo, Rongbo;  Conrad, Ralf
收藏  |  浏览/下载：21/0  |  提交时间：2011/09/09