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	Impact of Multiple Beams on Plan Quality, Linear Energy Transfer Distribution, and Plan Robustness of Intensity Modulated Proton Therapy for Lung Cancer 期刊论文 OAI收割 ACS Sensors, 2020 作者: Shang, Haijiao; Pu, Yuehu; Chen, Zhiling; Wang, Xuetao; Yuan, Cuiyun \| 收藏 \| 浏览/下载：32/0 \| 提交时间：2021/09/06 Proton beam therapy Bandwidth Biological organs Degrees of freedom (mechanics) Diseases Energy transfer Graphic methods Heart Optimization Proton beams Quality control Dose volume histograms Intensity modulated proton therapies Internal target volume Linear energy transfer Potential benefits Relative biological effectiveness Robust optimization Treatment planning systems
	京津冀电子废弃物回收利用的资源环境效益及网络优化研究学位论文 OAI收割北京: 中国科学院生态环境研究中心, 2019 作者: 陈盼 \| 收藏 \| 浏览/下载：45/0 \| 提交时间：2020/06/30 电子废弃物，回收利用潜力，资源环境效益，网络特征，优化策略 E-waste（weee）, Recycling Potential Assessment, Resources And Environmental Benefits, Network Characteristics,Optimization Strategies
	Modulation transfer function measurement of sampled imaging systems in field test (EI CONFERENCE) 会议论文 OAI收割 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China 作者: Yang L.; Zhang J.; Zhang J.; Zhang J.; Wang J. 收藏 \| 浏览/下载：30/0 \| 提交时间：2013/03/25 A digital mirror device (DMD) based light projector was developed as the target generator in modulation transfer function (MTF) measurement. In order to overcome the sampling-scene phase effect in MTF measurement of sampled imaging systems a method using random targets is introduced to yield a phase-averaged MTF. The main potential problem of implementing this method is the fact that the stationary assumption of the random targets may be vitiated in practical measurement especially in field test due to the ill condition. We provide an efficient model-independent way of analyzing and isolating the spectral contents arising from these additional contributions to MTF measurement. Algorithms with adaptive parameter selection were also developed for spectral estimation of the test image in order to overcome the challenge brought by the size limit of the test matrices for one certain field of view derived from the isoplantic region. The MTF measurement of a CCD video imager is used to demonstrate the measurement technique and illustrate the benefits over other methods. In order to validate the results comparisons have been made between MTF measurements of imager implemented using this method and bar target direct measurements. 2010 Copyright SPIE - The International Society for Optical Engineering.