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科研机构
北京大学 [322]
内容类型
期刊论文 [236]
其他 [84]
会议论文 [2]
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2017 [25]
2016 [44]
2015 [31]
2014 [31]
2013 [31]
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专题:北京大学
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A guide to analyzing biodiversity experiments
期刊论文
JOURNAL OF PLANT ECOLOGY, 2017
Schmid, Bernhard
;
Baruffol, Martin
;
Wang, Zhiheng
;
Niklaus, Pascal A.
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
analysis of variance
BEF-China
contrasts
linear models
mixed models
non-orthogonality
repeated measures
variance components
LINEAR-MODELS
GRASSLAND
VARIANCE
PRODUCTIVITY
ECOSYSTEMS
DIVERSITY
ECOLOGY
SPACE
Hierarchical semantic cognition for urban functional zones with VHR satellite images and POI data
期刊论文
ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING, 2017
Zhang, Xiuyuan
;
Du, Shihong
;
Wang, Qiao
收藏
  |  
浏览/下载:8/0
  |  
提交时间:2017/12/03
Urban functional zone
Image classification
Hierarchical semantic cognition
Point of interest
LATENT DIRICHLET ALLOCATION
SPATIAL-PATTERN-ANALYSIS
SCENE CLASSIFICATION
OBJECT DETECTION
RANDOM FORESTS
INFORMATION
SEGMENTATION
LANDSCAPE
MULTIRESOLUTION
FEATURES
Difference of urban development in China from the perspective of passenger transport around Spring Festival
期刊论文
APPLIED GEOGRAPHY, 2017
Xu, Jun
;
Li, Aoyong
;
Li, Dong
;
Liu, Yu
;
Du, Yunyan
;
Pei, Tao
;
Ma, Ting
;
Zhou, Chenghu
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2017/12/03
Urban development
Spring Festival transport
Crowdsourcing data
Network analysis
Spatial interaction
LAND-USE CHANGE
COMMUNITY STRUCTURE
SPATIAL INTERACTION
COMPLEX NETWORKS
AUTOCORRELATION
URBANIZATION
INFORMATION
PATTERNS
MODELS
SYSTEM
A Hierarchical Allometric Scaling Analysis of Chinese Cities: 1991-2014
期刊论文
DISCRETE DYNAMICS IN NATURE AND SOCIETY, 2017
Chen, Yanguang
;
Feng, Jian
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
CITY SIZE DISTRIBUTIONS
ZIPFS LAW
POWER-LAW
UNITED-STATES
GROWTH
EVOLUTION
FIRMS
对象云存储中分类分级数据的访问控制方法
其他
2017-01-01
杨腾飞
;
申培松
;
田雪
;
冯荣权
收藏
  |  
浏览/下载:8/0
  |  
提交时间:2017/12/03
对象存储
云计算
数据安全
访问控制系统
分类分级数据
属性加密
安全标记
object storage
cloud computing
data security
access control model
classified and graded data
attribute-based encryption
secure label
Gas-solid phase growth of hierarchical nanoporous nanoplates for water splitting in acidic conditions
期刊论文
JOURNAL OF ALLOYS AND COMPOUNDS, 2017
Qiu, Hua-Jun
;
Fang, Ling
;
Mu, Yan-Ping
;
Wu, Kai
;
Wang, Yu
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
Hierarchical structure
Nanoporous
Mo2C
Water splitting
HYDROGEN EVOLUTION REACTION
HIGHLY EFFICIENT ELECTROCATALYSTS
MOLYBDENUM CARBIDE NANOPARTICLES
MOS2 NANOSHEETS
GRAPHENE
CARBON
CATALYSTS
MO2C
ELECTRODES
NANOWIRES
Electrochemical properties of niobium and phosphate doped spherical Li-rich spinel LiMn2O4 synthesized by ion implantation method
期刊论文
CHINESE CHEMICAL LETTERS, 2017
Li, Wei
;
Siqin, Gao-Wa
;
Zhu, Zhi
;
Qi, Lu
;
Tian, Wen-Huai
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
Spinels
Ion implantation
Li-ion batteries
LiMn2O4
Doping
CATHODE MATERIALS
SECONDARY BATTERIES
HIERARCHICAL LINI0.5MN1.5O4
ELECTRODE MATERIALS
FACILE SYNTHESIS
MN-SPINEL
LITHIUM
PERFORMANCE
TEMPERATURE
FLUORINE
Facile sol-gel method combined with chemical vapor deposition for mesoporous few-layer carbon
期刊论文
CARBON, 2017
Qian, Meng
;
Xu, Feng
;
Bi, Hui
;
Lin, Tianquan
;
Huang, Fuqiang
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
ALUMINUM-OXIDE FILM
ACTIVATED CARBON
ANODE MATERIAL
GRAPHENE
SUPERCAPACITORS
CAPACITANCE
ENERGY
TUBES
侧基含纳米构筑单元的甲壳型液晶高分子的多层次自组装
期刊论文
高分子学报, 2017
候平平
;
沈志豪
;
范星河
收藏
  |  
浏览/下载:10/0
  |  
提交时间:2017/12/03
甲壳型液晶高分子
纳米构筑单元
二联苯
苯并菲
多面体低聚倍半硅氧烷
Mesogen-jacketed liquid crystalline polymer
Nanobuilding block
Biphenyl
Triphenylene
Polyhedral oligomeric silsesquioxane (POSS)
PHASE STRUCTURES
MAIN-CHAIN
POLYNORBORNENE BACKBONE
LENGTH SCALES
SUB-10 NM
COPOLYMERS
BEHAVIOR
SCIENCE
SERIES
Facile synthesis and hierarchical assembly of polystyrene-block- poly (perfluorooctylethyl acrylates)
期刊论文
POLYMER, 2017
Dai, Hui
;
Yin, Guang-Zhong
;
Zhao, Fang-Jia
;
Bian, Zhong-Xuan
;
Xu, Yu-Jie
;
Zhang, Wen-Bin
;
Miao, Xia-Ran
;
Li, Hui
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
Fluoropolymers
Block copolymer
Phase separation
Hierarchical structure
Self-assembly
DRIVING FORCES
DIBLOCK COPOLYMERS
PHASE-SEPARATION
THIN-FILMS
CHAIN
CRYSTALLIZATION
NANOSCALE
POLYMERIZATION
CONFINEMENT
LAMELLAE
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