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The Godson Processors: Its Research, Development, and Contributions 期刊论文  OAI收割
JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY, 2011, 卷号: 26, 期号: 3, 页码: 363-372
作者:  
Hu, Wei-Wu;  Gao, Yan-Ping;  Chen, Tian-Shi;  Xiao, Jun-Hua
  |  收藏  |  浏览/下载:22/0  |  提交时间:2019/12/16
Application of Moldflow in gas-assisted injection molding (EI CONFERENCE) 会议论文  OAI收割
2011 International Conference on Mechatronics and Materials Processing, ICMMP 2011, November 18, 2011 - November 20, 2011, Guangzhou, China
Zi K. M.; Chen L. H.
收藏  |  浏览/下载:26/0  |  提交时间:2013/03/25
Gas-assisted injection molding(GAIM)is a new kind of plastic processing technique. It is one of the most important developments in the injection molding industry. GAIM has many advantages such as lower injection pressure  lower warpage  better surface quality  lower material consumption  and shorten molding cycle time  etc. MPI/Gas module of Moldflow software can be used to simulate the GAIM process to optimize the whole molding process. In this study  the FM new truck interior ceiling handle was analyzed in GAIM process based on the MPI/Gas module. The simulation results showed the gas penetrating time  the contours of plastic layers thickness fraction of the parts and the gas volume fraction changing with time. The results can help technicians to determine the optimum process of the melt injection and the gas injection to ensure the final quality of the parts. 2011 Trans Tech Publications.  
China's catch-up and innovation model in it industry 期刊论文  iSwitch采集
International journal of technology management, 2010, 卷号: 51, 期号: 2-4, 页码: 194-216
作者:  
Liu, Xielin
收藏  |  浏览/下载:43/0  |  提交时间:2019/05/10
Research on the nonuniformity correction of linear TDI CCD remote camera (EI CONFERENCE) 会议论文  OAI收割
Advanced Materials and Devices for Sensing and Imaging II, November 8, 2004 - November 10, 2004, Beijing, China
Ya-xia L.; Zhi-hang H.
收藏  |  浏览/下载:22/0  |  提交时间:2013/03/25
Many applications  such as industrial inspection and overhead reconnaissance benefit from line scanning architectures where time delay integration (TDI) significantly improves sensitivity[5]. Images with linear response have become the backbone of the imaging industry. But each pixel of the TDI CCD has unique light sensitivity characteristics. Because these characteristics and the lens of the optical system affect camera's linearization and its performance  they must be removed through calibration. The process by which a CCD image is calibrated is known as nonuniformity correction. This paper discusses several methods of nonuniformity correction[2]. The first is one-point correction technique  which requires only one calibration point. This approach is to shift each curve toward the nominal curve by subtracting the offset from or adding the offset to the average. The second is two-point correction technique  which requires two calibration points. Each point is rotated and aligned so that all the detectors have the same response under the same radiance. The third is multipoint correction. It is recommended that more calibration points be implemented at appropriate regions of the response curve. Depend on the linear photoelectric response of the TDI CCD  we use two-point calibration and the standard deviations for the images are given before and after the correction.