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科研机构
北京大学 [233]
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其他 [233]
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2017 [3]
2016 [23]
2015 [23]
2014 [16]
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共233条,第1-10条
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内容类型:其他
专题:北京大学
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Urban scene classification with VHR images
其他
2017-01-01
Du, Shihong
;
Zhang, Xiuyuan
;
Guo, Luo
收藏
  |  
浏览/下载:10/0
  |  
提交时间:2017/12/03
GEOBIA
scene analysis
very-high-resolution images
urban areas
PATTERN
SCALE
Parity-decomposition and moment analysis for stationary Wigner equation with inflow boundary conditions
其他
2017-01-01
Ruo LI
;
Tiao LU
;
Zhangpeng SUN
收藏
  |  
浏览/下载:9/0
  |  
提交时间:2017/12/03
Stationary Wigner equation inflow boundary conditions well-posedness parity-decomposition moment analysis
Stationary Wigner equation
inflow boundary conditions
well-posedness
parity-decomposition
moment analysis
RESONANT-TUNNELING DIODES
SIMULATION
MASS
Social Media Visual Analytics
其他
2017-01-01
Chen, Siming
;
Lin, Lijing
;
Yuan, Xiaoru
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
REAL-TIME
INFORMATION DIFFUSION
TEXT DATA
NETWORKS
VISUALIZATION
SYSTEM
MESSAGES
EXPLORATION
CHALLENGE
PATTERNS
Occurrence, spatial distribution, sources, and risks of polychlorinated biphenyls and heavy metals in surface sediments from a large eutrophic Chinese lake (Lake Chaohu)
其他
2016-01-01
He, Wei
;
Bai, Ze-Lin
;
Liu, Wen-Xiu
;
Kong, Xiang-Zhen
;
Yang, Bin
;
Yang, Chen
;
Jorgensen, Sven Erik
;
Xu, Fu-Liu
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
Polychlorinated biphenyls
Heavy metals
Occurrence
Spatial distribution
Risks
Lake Chaohu
Positive matrix factorization (PMF)
Surface sediment
POLYCYCLIC AROMATIC-HYDROCARBONS
POLYBROMINATED DIPHENYL ETHERS
DIOXIN-LIKE PCBS
TRACE-METALS
YANGTZE ESTUARY
ORGANIC-MATTER
RIVER
WATER
HEALTH
DECHLORINATION
The accumulation of heavy metals in agricultural land and the associated potential ecological risks in Shenzhen, China
其他
2016-01-01
Wu, Jiansheng
;
Song, Jing
;
Li, Weifeng
;
Zheng, Maokun
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/04
Soil heavy metals
Agricultural topsoil
Potential ecological risk
Principal component analysis
Pollution sources
Shenzhen, China
SPATIAL-DISTRIBUTION
SOILS
POLLUTION
SEDIMENTS
URBAN
INDEX
GEOSTATISTICS
TOPSOILS
SAMPLES
CROPS
Analysis of Characteristics and Trends of Temperature Change Over a 50-Year Period in the Gansu Province, China
其他
2016-01-01
Zhu, Wen-bo
;
Liu, Ya
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
Temperature interpolation
Spatial distribution
Time series analysis
Urban thermal environment dynamics and associated landscape pattern factors: A case study in the Beijing metropolitan region
其他
2016-01-01
Peng, Jian
;
Xie, Pan
;
Liu, Yanxu
;
Ma, Jing
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/04
Urban thermal environment dynamics
High temperature center
Landscape composition
Landscape configuration
Beijing metropolitan region
LAND-SURFACE TEMPERATURE
HEAT-ISLAND
SEASONAL VARIABILITY
VEGETATION INDEX
SATELLITE IMAGES
GREEN SPACES
CHINA
COVER
URBANIZATION
CLIMATES
Delineating intra-urban spatial connectivity patterns by travel-activities: A case study of Beijing, China
其他
2016-01-01
Kang, Chaogui
;
Liu, Yu
;
Wu, Lun
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
A Novel Surveillance System Applied in Civil Airport
其他
2016-01-01
Sun, Hua Bo
;
Zhong, Min Zhu
;
Miao, Ling Yun
;
Wang, Xin
;
Zhao, Hai Meng
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
ANALYSIS ON TEMPORAL-SPATIAL CHANGE OF VEGETATION COVERAGA IN HULUNBUIR STEPPE (2000-2014)
其他
2016-01-01
Peng, Fei
;
Fan, Wenjie
;
Xu, Xiru
;
Liu, Xing
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
Hulunbuir Steppe
Vegetation coverage time-series
climatic factors
break-points
correlation
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