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北京大学 [10]
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A New Autocollimation Externally Occulted Coronagraph
期刊论文
Guangzi Xuebao/Acta Photonica Sinica, 2023, 卷号: 52, 期号: 5
作者:
Y. Ding
;
H. Zhang
;
Y. Huang
;
T. Wang and W. Xu
收藏
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浏览/下载:0/0
  |  
提交时间:2024/07/03
Monitoring glacier terminus and surface velocity changes over different time scales using massive imagery analysis and offset tracking at the Hoh Xil World Heritage Site, Qinghai-Tibet Plateau
期刊论文
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION, 2022, 卷号: 112, 页码: 15
作者:
Meng, Qingkai
;
Chen, Xiaoqing
;
Huang, Xinhua
;
Huang, Yuefei
;
Peng, Ying
收藏
  |  
浏览/下载:12/0
  |  
提交时间:2022/12/26
Glacier monitoring
Google Earth Engine imagery analysis
Offest-tracking
Hoh Xil World Heritage Site
Modified frequency-domain channel-estimation based on the dual-dependent pilots for polarization-division-multiplexed coherent optical orthogonal frequency division multiplexing systems with offset-quadrature-amplitude modulation
期刊论文
OPTICAL ENGINEERING, 2022, 卷号: 61, 期号: 6
作者:
Wang, Daobin
;
Zhang, Shuo
;
Liu, Junjie
;
Yuan, Lihua
;
Gao, Guanjun
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浏览/下载:34/0
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提交时间:2022/07/19
orthogonal frequency division multiplexing
polarization division multiplexing
channel response
coherent optical transmission system
High spatiotemporal variability of methane concentrations challenges estimates of emissions across vegetated coastal ecosystems
期刊论文
GLOBAL CHANGE BIOLOGY, 2022, 页码: 15
作者:
Roth, Florian
;
Sun, Xiaole
;
Geibel, Marc C.
;
Prytherch, John
;
Bruchert, Volker
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浏览/下载:23/0
  |  
提交时间:2022/07/18
blue carbon
carbon cycle
climate change
coastal greenhouse gas emissions
methane fluxes
Distribution Network Reconfiguration Method based on Adaptive Multi-Population Fruit Fly Optimization Algorithm
期刊论文
EEA - Electrotehnica, Electronica, Automatica, 2022, 卷号: 70, 期号: 1, 页码: 31-38
作者:
Zhang, Kaiyue
;
Tang, Minan
;
Wang, Qianqian
;
Zhou, Peihua
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浏览/下载:30/0
  |  
提交时间:2022/07/20
Fruits
Local search (optimization)
Population distribution
Adaptive
Distribution network reconfiguration
Fly optimization algorithms
Fruit fly optimization algorithm
Fruitflies
Intelligent distribution networks
Local search
Multi population
Networks reconfiguration
Objective functions
Measuring the Deflection of the Vertical via Local Reference Point Surveying and Pointing Calibration of a VLBI Telescope: A Case Study at the Urumqi Station
期刊论文
EARTH AND SPACE SCIENCE, 2021, 卷号: 8, 期号: 10, 页码: 13
作者:
Zhang, Zhibin
;
Ma, Xiaohui
;
Sun, Zhongmiao
;
Zhang, Ali
;
Yuan, Ye
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浏览/下载:15/0
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提交时间:2022/01/17
VLBI
deflection of the vertical
reference point
axis-related errors
axis offset
Optimal optical path difference of an asymmetric common-path coherent-dispersion spectrometer
期刊论文
Applied Optics, 2021, 卷号: 60, 期号: 16, 页码: 4535-4543
作者:
Chen, Shasha
;
Wei, Ruyi
;
Xie, Zhengmao
;
Wu, Yinhua
;
Di, Lamei
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浏览/下载:33/0
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提交时间:2021/06/11
A low phase noise microwave source for high-performance CPT Rb atomic clock
期刊论文
ELECTRONICS LETTERS, 2021, 页码: 3
作者:
Li, Xiaodong
;
Yun, Peter
;
Li, Qinglin
;
Ju, Bowen
;
Yu, Shaoshao
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  |  
浏览/下载:56/0
  |  
提交时间:2021/11/29
Increased CO2 emissions surpass reductions of non-CO2 emissions more under higher experimental warming in an alpine meadow
期刊论文
SCIENCE OF THE TOTAL ENVIRONMENT, 2021, 卷号: 769, 页码: 11
作者:
Wang, Jinsong
;
Quan, Quan
;
Chen, Weinan
;
Tian, Dashuan
;
Ciais, Philippe
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  |  
浏览/下载:97/0
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提交时间:2021/06/10
CO2 emissions
Cold ecosystem
Greenhouse gas balance
Non-growing season
Warming magnitude
Industrial land expansion in rural China threatens environmental securities
期刊论文
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING, 2021, 卷号: 15, 期号: 2, 页码: 13
作者:
Zhang, Chi
;
Kuang, Wenhui
;
Wu, Jianguo
;
Liu, Jiyuan
;
Tian, Hanqin
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  |  
浏览/下载:50/0
  |  
提交时间:2021/03/15
Industrialization
Land-use change
Environment risks
Environmental security
Urbanization
China
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