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科研机构
北京大学 [24]
内容类型
期刊论文 [16]
其他 [5]
会议论文 [3]
发表日期
2017 [2]
2016 [2]
2015 [2]
2014 [1]
2013 [4]
2012 [2]
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专题:北京大学
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城市形态的分维估算与分形判定
期刊论文
地理科学进展, 2017
陈彦光
收藏
  |  
浏览/下载:8/0
  |  
提交时间:2017/12/03
城市形态
分形
分维
自仿射
盒子计数法
多分形
标度区
urban form
fractals
fractal dimension
self-affinity
box-counting method
multifractals
scaling range
3R MoS2 with Broken Inversion Symmetry: A Promising Ultrathin Nonlinear Optical Device
期刊论文
ADVANCED MATERIALS, 2017
Shi, Jia
;
Yu, Peng
;
Liu, Fucai
;
He, Peng
;
Wang, Rui
;
Qin, Liang
;
Zhou, Junbo
;
Li, Xin
;
Zhou, Jiadong
;
Sui, Xinyu
;
Zhang, Shuai
;
Zhang, Yanfeng
;
Zhang, Qing
;
Sum, Tze Chien
;
Qiu, Xiaohui
;
Liu, Zheng
;
Liu, Xinfeng
收藏
  |  
浏览/下载:9/0
  |  
提交时间:2017/12/03
2ND-HARMONIC GENERATION
ENHANCEMENT
MONOLAYER
GRAPHENE
VALLEY
DEFINING URBAN AND RURAL REGIONS BY MULTIFRACTAL SPECTRUMS OF URBANIZATION
期刊论文
FRACTALS-COMPLEX GEOMETRY PATTERNS AND SCALING IN NATURE AND SOCIETY, 2016
Chen, Yanguang
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
Multifractals
Spatial Recursive Subdivision
Space Filling
Allometric Scaling
Golden Section
Level of Urbanization
Urban Space
Rural Space
FRACTAL DIMENSION
CENTRAL PLACE
DYNAMICS
GROWTH
SIZE
SETTLEMENTS
PATTERNS
BRUSSELS
FRONTIER
CITIES
An Improved Manufacturing Approach for Discrete Silicon Microneedle Arrays with Tunable Height-Pitch Ratio
期刊论文
SENSORS, 2016
Wang, Renxin
;
Wang, Wei
;
Li, Zhihong
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
discrete
microneedle
KOH etching
octagonal pyramid
ELECTRODE ARRAY
FABRICATION
DELIVERY
Quantitative radiology: automated measurement of polyp volume in computed tomography colonography using Hessian matrix-based shape extraction and volume growing
期刊论文
Quantitative imaging in medicine and surgery, 2015
Epstein Mark L
;
Obara Piotr R
;
Chen Yisong
;
Liu Junchi
;
Zarshenas Amin
;
Makkinejad Nazanin
;
Dachman Abraham H
;
Suzuki Kenji
收藏
  |  
浏览/下载:10/0
  |  
提交时间:2017/12/03
Quantitative CT colonography,colon cancer,computed tomography colonography (CTC),computer-aided diagnosis,polyp size,virtual colonoscopy
Feature selection based on data clustering
其他
2015-01-01
Liu, Hongzhi
;
Wu, Zhonghai
;
Zhang, Xing
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
A Regularized Approach for Geodesic-Based Semisupervised Multimanifold Learning
期刊论文
ieee transactions on image processing, 2014
Fan, Mingyu
;
Zhang, Xiaoqin
;
Lin, Zhouchen
;
Zhang, Zhongfei
;
Bao, Hujun
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2015/11/11
Feature extraction
manifold learning
semisupervised learning
image classification
NONLINEAR DIMENSIONALITY REDUCTION
FACE RECOGNITION
FEATURE-EXTRACTION
DISCRIMINANT-ANALYSIS
PRESERVING PROJECTIONS
GEOMETRIC FRAMEWORK
UNIFIED FRAMEWORK
MANIFOLD
SUBSPACE
ISOMAP
A MEMS sandwich differential capacitive silicon-on-insulator accelerometer
期刊论文
microsystem technologies micro and nanosystems information storage and processing systems, 2013
Zhang, Yangxi
;
Yang, Gang
;
Gao, Chengchen
;
Hao, Yilong
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2015/11/10
Analyzing the influential people in Sina Weibo dataset
其他
2013-01-01
Liao, Qing
;
Wang, Wei
;
Han, Yi
;
Zhang, Qian
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2015/11/17
Multidimensional gray-wavelet processing in interferometric fiber-optic gyroscopes
期刊论文
measurement science technology, 2013
Yang, Yi
;
Wang, Zinan
;
Peng, Chao
;
Li, Zhengbin
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2015/11/13
gyroscopes
multi-dimension
quadrature demodulation
wavelet
gray model
OPTIC GYROSCOPES
PRECISION
NOISE
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