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科研机构
北京大学 [16]
内容类型
期刊论文 [8]
会议论文 [5]
其他 [3]
发表日期
2016 [1]
2015 [2]
2014 [1]
2013 [1]
2012 [1]
2010 [1]
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专题:北京大学
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Identifying the urban-rural fringe using wavelet transform and kernel density estimation: A case study in Beijing City, China
期刊论文
ENVIRONMENTAL MODELLING & SOFTWARE, 2016
Peng, Jian
;
Zhao, Shiquan
;
Liu, Yanxu
;
Tian, Lu
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
Urban-rural fringe
Spatial continuous wavelet transform
Kernel density estimation
Land use degree index
Beijing City
ECOLOGICAL BOUNDARIES
LANDSCAPE STRUCTURE
CARBON STORAGE
UNITED-STATES
URBANIZATION
EXPANSION
SELECTION
DYNAMICS
IMPACTS
MODEL
Quantitative identification of delamination at different interfaces using guided wave signals in composite laminates
期刊论文
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES, 2015
Li, Bing
;
Ye, Lin
;
Li, Zheng
;
Ma, Zhaoyang
;
Kalhori, Hamed
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
Lamb waves
composite laminates
delamination identification
mode conversion
piezoelectric actuator
TIME-OF-FLIGHT
LAMB WAVES
DAMAGE IDENTIFICATION
INSPECTION
VELOCITY
ELEMENT
Ultrasonic defect detection of a thick-walled filament-wound composite tubular structure
会议论文
Bu, H.L.
;
Chen, J.L.
;
Gao, G.Y.
;
Li, Z.
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
Wavelet transform and radon transform on the quaternion Heisenberg group
其他
2014-01-01
He, Jian Xun
;
Liu, He Ping
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2015/11/11
Quaternion Heisenberg group
wavelet transform
Radon transform
inverse Radon transform
LAGUERRE HYPERGROUP
ADMISSIBLE WAVELETS
HARMONIC-ANALYSIS
LIE-GROUPS
H-TYPE
INVERSION
OPERATORS
FORMULA
SPACES
Damage detection of filament wound composite cylinder using ultrasonic waves
会议论文
Gu, Lei
;
Gong, Kezhuang
;
Gao, Guiyun
;
Li, Zheng
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2015/11/17
Detection of a radial crack in annular structures using guided circumferential waves and continuous wavelet transform
期刊论文
2012
Liu, Yu
;
Li, Zheng
;
Gong, Kezhuang
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2015/11/12
Radial crack
Guided circumferential wave
Gabor wavelet
PZT sensors
CIRCULAR ANNULUS
DAMAGE
IDENTIFICATION
CYLINDERS
SENSORS
PIPES
Crack detection of fibre reinforced composite beams based on continuous wavelet transform
期刊论文
2010
Liu, Yu
;
Li, Zheng
;
Zhang, Wei
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2015/11/12
flexural wave
crack detection
continuous wavelet transform
composite beams
TIME-FREQUENCY ANALYSIS
DAMAGE DETECTION
DISPERSIVE WAVES
Wavelet-based Inclusion Detection in Cantilever Beams
期刊论文
cmc computers materials continua, 2009
Li, Zheng
;
Zhang, Wei
;
Gong, Kezhuang
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2015/11/13
Continuous wavelet transform
Gabor wavelet
inclusion detection
cantilever beam
Wavelet-based inclusion detection in cantilever beams
期刊论文
computers materials and continua, 2009
Li, Zheng
;
Zhang, Wei
;
Gong, Kezhuang
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2015/11/13
Inner crack detection method for cantilever beams
会议论文
Li, Zheng
;
Zhang, Wei
;
Li, Yixuan
;
Su, Xianyue
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2015/11/13
continuous wavelet transform
damage detection
stress wave
beam
DAMAGE DETECTION
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