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科研机构
北京大学 [33]
内容类型
期刊论文 [33]
发表日期
2017 [6]
2016 [3]
2015 [1]
2014 [4]
2013 [2]
2012 [4]
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专题:北京大学
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Tree-ring-based SPEI reconstruction in central Tianshan Mountains of China since AD 1820 and links to westerly circulation
期刊论文
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2017
Jiang, Peng
;
Liu, Hongyan
;
Wu, Xiuchen
;
Wang, Hongya
收藏
  |  
浏览/下载:11/0
  |  
提交时间:2017/12/03
SPEI
tree-ring width
Tianshan Mountains
DROUGHT SEVERITY INDEX
MOISTURE VARIABILITY
NORTH-ATLANTIC
CLIMATE-CHANGE
TIME-SERIES
VEGETATION
IMPACTS
HISTORY
DATASET
SHAN
Prototyping of LAI and FPAR Retrievals from MODIS Multi-Angle Implementation of Atmospheric Correction (MAIAC) Data
期刊论文
REMOTE SENSING, 2017
Chen, Chi
;
Knyazikhin, Yuri
;
Park, Taejin
;
Yan, Kai
;
Lyapustin, Alexei
;
Wang, Yujie
;
Yang, Bin
;
Myneni, Ranga B.
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
MAIAC
MODIS
leaf area index (LAI)
fraction of photosynthetically active radiation (FPAR)
radiative transfer
LEAF-AREA INDEX
PART 1
SURFACE REFLECTANCE
VEGETATION
PRODUCTS
ALGORITHM
FRACTION
TERRA
VALIDATION
AMAZON
Estimation of canopy carotenoid content of winter wheat using multi-angle hyperspectral data
期刊论文
ADVANCES IN SPACE RESEARCH, 2017
Kong, Weiping
;
Huang, Wenjiang
;
Liu, Jiangui
;
Chen, Pengfei
;
Qin, Qiming
;
Ye, Huichun
;
Peng, Dailiang
;
Dong, Yingying
;
Mortimer, A. Hugh
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
Multi-angle
Hyperspectral data
Vegetation index
Spectral feature
Canopy carotenoid content
Agriculture
REMOTE-SENSING DATA
LEAF-AREA INDEX
VEGETATION INDEXES
CHLOROPHYLL CONTENT
REFLECTANCE SPECTROSCOPY
PRECISION AGRICULTURE
CHRIS/PROBA DATA
PLANT-LEAVES
GREEN LAI
VALIDATION
Estimation of leaf area index and its sunlit portion from DSCOVR EPIC data: Theoretical basis
期刊论文
REMOTE SENSING OF ENVIRONMENT, 2017
Yang, Bin
;
Knyazikhin, Yuri
;
Mottus, Matti
;
Rautiainen, Miina
;
Stenberg, Pauline
;
Yan, Lei
;
Chen, Chi
;
Yan, Kai
;
Choi, Sungho
;
Park, Taejin
;
Myneni, Ranga B.
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
DSCOVR mission
Sunlit leaf area index
Spectral invariants
Hot spot
Operational algorithm
Radiative transfer
PHOTOSYNTHETICALLY ACTIVE RADIATION
PHOTON RECOLLISION PROBABILITY
CANOPY SPECTRAL INVARIANTS
SYSTEM DATA RECORD
PART 1
HOTSPOT OBSERVATIONS
VEGETATION STRUCTURE
HYPERSPECTRAL DATA
BOREAL FOREST
MISR DATA
Application of nuclear magnetic resonance spectroscopy in food adulteration determination: the example of Sudan dye I in paprika powder
期刊论文
SCIENTIFIC REPORTS, 2017
Hu, Yaxi
;
Wang, Shuo
;
Wang, Shenlin
;
Lu, Xiaonan
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
H-1-NMR SPECTROSCOPY
QUANTITATIVE H-1-NMR
RAMAN-SPECTROSCOPY
NMR-SPECTROSCOPY
MILK POWDER
HPLC METHOD
PARA RED
MELAMINE
CHEMOMETRICS
SPICES
Multiple-Mode Orthogonal Frequency Division Multiplexing With Index Modulation
期刊论文
IEEE TRANSACTIONS ON COMMUNICATIONS, 2017
Wen, Miaowen
;
Basar, Ertugrul
;
Li, Qiang
;
Zheng, Beixiong
;
Zhang, Meng
收藏
  |  
浏览/下载:12/0
  |  
提交时间:2017/12/03
OFDM
index modulation
in-phase/quadrature components
log-likelihood ratio (LLR)
maximum-likelihood (ML)
bit error rate (BER)
SPATIAL MODULATION
OFDM
DETECTOR
PERFORMANCE
Detrital zircon U-Pb ages and Hf isotopes of Permo-Carboniferous sandstones in central Inner Mongolia, China: Implications for provenance and tectonic evolution of the southeastern Central Asian Orogenic Belt
期刊论文
TECTONOPHYSICS, 2016
Chen, Yan
;
Zhang, Zhicheng
;
Li, Ke
;
Yu, Haifei
;
Wu, Tairan
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
Zircon U-Pb geochronology
Zircon Hf isotopes
Provenance
Inner Mongolia
CAOB
BIMODAL VOLCANIC-ROCKS
BILIHE GOLD DEPOSIT
NORTH CHINA
GEOLOGICAL SIGNIFICANCE
HEGENSHAN OPHIOLITE
CONTINENTAL-CRUST
PALEOGEOGRAPHIC RECONSTRUCTION
SOLONKER SUTURE
ZHESI FORMATION
KEY ISSUES
Analyses of Impact of Needle Surface Properties on Estimation of Needle Absorption Spectrum: Case Study with Coniferous Needle and Shoot Samples
期刊论文
REMOTE SENSING, 2016
Yang, Bin
;
Knyazikhin, Yuri
;
Lin, Yi
;
Yan, Kai
;
Chen, Chi
;
Park, Taejin
;
Choi, Sungho
;
Mottus, Matti
;
Rautiainen, Miina
;
Myneni, Ranga B.
;
Yan, Lei
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2017/12/04
leaf albedo
leaf biochemistry
leaf surface reflectance
polarization measurements
OPTICAL-PROPERTIES
LEAF REFLECTANCE
CANOPY
MODEL
VEGETATION
NITROGEN
DIFFERENTIATION
INVARIANTS
DIFFUSE
Signals of short-term climatic periodicities detected in the groundwater of North China Plain
期刊论文
HYDROLOGICAL PROCESSES, 2016
Cao, Guoliang
;
Zheng, Chunmiao
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
climatic periodicity
groundwater
Singular Spectrum Analysis
North China Plain
HYDROLOGIC TIME-SERIES
SOUTHWESTERN UNITED-STATES
WATER-RESOURCES
EL-NINO
SOUTHERN-OSCILLATION
SPECTRAL-ANALYSIS
RIVER-BASIN
VARIABILITY
PRECIPITATION
AQUIFER
THE SPECTRAL FEATURES OF LOW-AMPLITUDE MAGNETIC FLUCTUATIONS IN THE SOLAR WIND AND THEIR COMPARISON WITH MODERATE-AMPLITUDE FLUCTUATIONS
期刊论文
Astrophysical Journal Letters, 2015
Wang, Xin
;
Tu, Chuanyi
;
He, Jiansen
;
Marsch, Eckart
;
Wang, Linghua
;
Salem, Chadi
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2017/12/03
plasmas
solar wind
Sun: magnetic fields
turbulence
MAGNETOHYDRODYNAMIC TURBULENCE
1 AU
ANISOTROPY
INTERMITTENCY
FIELD
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