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科研机构
北京大学 [19]
内容类型
期刊论文 [19]
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2017 [4]
2016 [3]
2015 [4]
2014 [1]
2012 [1]
2010 [2]
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内容类型:期刊论文
专题:北京大学
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Critical climate periods for grassland productivity on China's Loess Plateau
期刊论文
AGRICULTURAL AND FOREST METEOROLOGY, 2017
Guo, Liang
;
Cheng, Jimin
;
Luedeling, Eike
;
Koerner, Sally E.
;
He, Jin-Sheng
;
Xu, Jianchu
;
Gang, Chengcheng
;
Li, Wei
;
Luo, Ruimin
;
Peng, Changhui
收藏
  |  
浏览/下载:8/0
  |  
提交时间:2017/12/03
Aboveground net primary productivity (ANPP)
Partial least squares regression (PLS)
Precipitation
Temperate grassland
Temperature
Timing of climate variability
NET PRIMARY PRODUCTIVITY
PRECIPITATION VARIABILITY
ABOVEGROUND PRODUCTIVITY
SEASONAL PRECIPITATION
INTERANNUAL VARIATION
RAINFALL VARIABILITY
TEMPERATE GRASSLAND
TEMPORAL VARIATION
MESIC GRASSLAND
NORTH-AMERICAN
Transferability of Economy Estimation Based on DMSP/OLS Night-Time Light
期刊论文
REMOTE SENSING, 2017
Qi, Kun
;
Hu, Yi&apos
;
Cheng, Chengqi
;
Chen, Bo
;
na
收藏
  |  
浏览/下载:13/0
  |  
提交时间:2017/12/03
transferability
data mining
night-time light
DMSP/OLS
economy estimation
SATELLITE IMAGERY
URBANIZATION PROCESS
URBAN EXPANSION
CHINA
DYNAMICS
MODEL
SPECTROSCOPY
PERSPECTIVE
POPULATION
REGRESSION
Forecasting PM2.5 induced male lung cancer morbidity in China using satellite retrieved PM2.5 and spatial analysis
期刊论文
SCIENCE OF THE TOTAL ENVIRONMENT, 2017
Han, Xiao
;
Liu, Yuqin
;
Gao, Hong
;
Ma, Jianmin
;
Mao, Xiaoxuan
;
Wang, Yuting
;
Ma, Xudong
收藏
  |  
浏览/下载:10/0
  |  
提交时间:2017/12/03
PM2.5
Lung cancer
Morbidity
Male
China
Spatial analysis
PARTICULATE AIR-POLLUTION
LEAST-SQUARES REGRESSION
LONG-TERM EXPOSURE
EXTENDED FOLLOW-UP
HARVARD 6 CITIES
FINE PARTICLES
UNITED-STATES
MORTALITY
COMBINATION
NONSMOKERS
Efficient frequency-domain channel equalisation methods for OFDM/OQAM-PON with intensity modulation and direct detection
期刊论文
IET COMMUNICATIONS, 2017
Lin, Bangjiang
;
Tang, Xuan
;
Fang, Xi
;
Wu, Yi
;
Li, Hui
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
frequency-domain analysis
channel estimation
blind equalisers
OFDM modulation
quadrature amplitude modulation
passive optical networks
least mean squares methods
frequency-domain channel equalisation method
OFDM
OQAM
PON
intensity modulation
direct detection
frequency-domain channel estimation
adjacent subcarriers frequency-domain averaging
ASFA
minimum mean squared error
MMSE
orthogonal frequency division multiplexing-offset quadrature amplitude modulation
passive op
OFDM-PON
TRANSMISSION
利用多时相Sentinel-1 SAR数据反演农田地表土壤水分
期刊论文
农业工程学报, 2016
何连
;
秦其明
;
任华忠
;
都骏
;
孟晋杰
;
杜宸
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
土壤水分
遥感
合成孔径雷达
反演
多时相
农田地表
soil moisture
remote sensing
synthetic aperture radar
retrieval
multi-temporal
agricultural fields
Improved IAMB with Expanded Markov Blanket for High-Dimensional Time Series Prediction
期刊论文
CHINESE JOURNAL OF ELECTRONICS, 2016
Yang Xianglin
;
Tong Yunhai
;
Yang Jianjun
;
Yan Hong
;
Wang Hongbo
;
Tan Shaohua
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
Expanded Markov blanket (EMB)
High-dimensional time series
Incremental association Markov blanket (IAMB)
Prediction
Regression
CAUSAL
Estimating Soil Organic Carbon of Cropland Soil at Different Levels of Soil Moisture Using VIS-NIR Spectroscopy
期刊论文
REMOTE SENSING, 2016
Jiang, Qinghu
;
Chen, Yiyun
;
Guo, Long
;
Fei, Teng
;
Qi, Kun
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
generalized least squares weighting
moisture correction
orthogonal signal correction
soil organic carbon
visible
near-infrared reflectance spectroscopy
NEAR-INFRARED-SPECTROSCOPY
DIFFUSE-REFLECTANCE SPECTROSCOPY
AGRICULTURAL SOILS
FIELD CONDITIONS
CENTRAL YANGTZE
LEAST-SQUARES
WATER CONTENT
SPECTRA
PREDICTION
QUANTIFICATION
Exploring spatially variable relationships between NDVI and climatic factors in a transition zone using geographically weighted regression
期刊论文
THEORETICAL AND APPLIED CLIMATOLOGY, 2015
Zhao, Zhiqiang
;
Gao, Jiangbo
;
Wang, Yanglin
;
Liu, Jianguo
;
Li, Shuangcheng
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
SCALE-DEPENDENT RELATIONSHIPS
SPECIES RICHNESS
NON-STATIONARITY
RAINFALL RELATIONSHIP
VARYING COEFFICIENTS
CHINA
MODELS
NONSTATIONARITY
CONSERVATION
PRODUCTIVITY
A Semiphysical Microwave Surface Emission Model for Soil Moisture Retrieval
期刊论文
ieee transactions on geoscience and remote sensing, 2015
Shen, Xinyi
;
Hong, Yang
;
Qin, Qiming
;
Basara, Jeffrey B.
;
Mao, Kebiao
;
Wang, D.
收藏
  |  
浏览/下载:25/0
  |  
提交时间:2015/11/11
Advanced integral equation model (AIEM)
microwave remote sensing
rough surface emission
soil moisture retrieval
AMSR-E
ROUGH SURFACES
EMPIRICAL-MODEL
LAND-SURFACE
1.4 GHZ
C-BAND
VEGETATION
SCATTERING
ALGORITHM
FREQUENCY
甘草中甘草苷和甘草酸红外定量模型特征变量的筛选与解析
期刊论文
光谱学与光谱分析, 2015
詹雪艳
;
林兆洲
;
孙杨
;
袁瑞娟
;
杨展澜
;
段天璇
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
红外定量模型
变量筛选
化学特征
变量解析
甘草
Infrared quantitative models
Variable selection
Chemical characteristics
Variable interpretation
Radix Glycyrrhi-zae
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