中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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CAS IR Grid
机构
地理科学与资源研究所 [4]
长春光学精密机械与物... [1]
成都生物研究所 [1]
上海应用物理研究所 [1]
采集方式
OAI收割 [7]
内容类型
期刊论文 [5]
SCI/SSCI论文 [1]
会议论文 [1]
发表日期
2020 [1]
2019 [1]
2018 [3]
2013 [1]
2010 [1]
学科主题
Ecology [1]
Environmen... [1]
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浏览/检索结果:
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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
Assessing changes in the value of ecosystem services in response to land-use/land-cover dynamics in Nigeria
期刊论文
OAI收割
SCIENCE OF THE TOTAL ENVIRONMENT, 2019, 卷号: 636, 期号: 2018, 页码: 597-609
作者:
Arowolo, Aisha Olushola
;
Deng, Xiangzheng
;
Olatunji, Olusanya Abiodun
;
Obayelu, Abiodun Elijah
|
收藏
|
浏览/下载:46/0
|
提交时间:2020/12/24
Forests
Savannah
Agricultural expansion
Value coefficients
Benefits transfer
Assessing changes in the value of ecosystem services in response to land-use/land-cover dynamics in Nigeria
期刊论文
OAI收割
SCIENCE OF THE TOTAL ENVIRONMENT, 2018, 卷号: 636, 页码: 597-609
作者:
Arowolo, Aisha Olushola
;
Deng, Xiangzheng
;
Olatunji, Olusanya Abiodun
;
Obayelu, Abiodun Elijah
|
收藏
|
浏览/下载:47/0
|
提交时间:2019/05/23
Forests
Savannah
Agricultural expansion
Value coefficients
Benefits transfer
Assessing changes in the value of ecosystem services in response to land-use/land-cover dynamics in Nigeria
期刊论文
OAI收割
SCIENCE OF THE TOTAL ENVIRONMENT, 2018, 卷号: 636, 页码: 597-609
作者:
Arowolo, Aisha Olushola
;
Deng, Xiangzheng
;
Olatunji, Olusanya Abiodun
;
Obayelu, Abiodun Elijah
|
收藏
|
浏览/下载:19/0
|
提交时间:2019/05/23
Forests
Savannah
Agricultural expansion
Value coefficients
Benefits transfer
Assessing changes in the value of ecosystem services in response to land-use/land-cover dynamics in Nigeria
期刊论文
OAI收割
SCIENCE OF THE TOTAL ENVIRONMENT, 2018, 卷号: 636, 页码: 597-609
作者:
Arowolo, Aisha Olushola
;
Deng, Xiangzheng
;
Olatunji, Olusanya Abiodun
;
Obayelu, Abiodun Elijah
|
收藏
|
浏览/下载:21/0
|
提交时间:2019/05/23
Forests
Savannah
Agricultural expansion
Value coefficients
Benefits transfer
The impact of vouchers on preschool attendance and elementary school readiness: A randomized controlled trial in rural China
SCI/SSCI论文
OAI收割
2013
Wong H. L.
;
Luo R. F.
;
Zhang L. X.
;
Rozelle S.
收藏
|
浏览/下载:30/0
|
提交时间:2014/12/24
Preschool attendance
School readiness
Voucher and conditional cash
transfer
Randomized controlled trials
Educational performance
Rural
China
early-childhood education
head-start
program
performance
benefits
achievement
experience
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.
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.
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