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清华大学 [46]
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期刊论文 [165]
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基于消失点检测算法的束靶红外图像畸变校正
期刊论文
强激光与粒子束, 2023, 卷号: 35
作者:
陈丽萍
;
许永建
;
於子辰
;
汪日新
;
彭旭峰
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2023/11/10
vanishing point detection
linear detection
image rectification
line segment clustering
neutral beam diagnosis
消失点检测
直线检测
图像校正
线段聚类
中性束诊断
Rolling bearing fault diagnosis by Markov transition field and multi-dimension convolutional neural network
期刊论文
Measurement Science and Technology, 2022, 卷号: 33, 期号: 11
作者:
Lei, Chunli
;
Xue, Linlin
;
Jiao, Mengxuan
;
Zhang, Huqiang
;
Shi, Jiashuo
收藏
  |  
浏览/下载:36/0
  |  
提交时间:2022/09/22
Chemical activation
Convolution
Convolutional neural networks
Fault detection
Neural network models
Roller bearings
Activation functions
Condition
Convolutional neural network
E-rectified linear unit activation function
Faults diagnosis
Linear units
Markov transition field
Multi dimensions
Multi-dimension attention
Transition fields
Quality-related fault diagnosis based on k-nearest neighbor rule for non-linear industrial processes
期刊论文
INTERNATIONAL JOURNAL OF DISTRIBUTED SENSOR NETWORKS, 2021, 卷号: 17, 期号: 11, 页码: 14
作者:
Ren, Zelin
;
Tang, Yongqiang
;
Zhang, Wensheng
收藏
  |  
浏览/下载:22/0
  |  
提交时间:2021/12/28
Fault detection
fault diagnosis
quality-related
non-linear industrial process
k-nearest neighbor rule
Multi-format speech BioHashing based on energy to zero ratio and improved LP-MMSE parameter fusion
期刊论文
Multimedia Tools and Applications, 2021, 卷号: 80, 期号: 7, 页码: 10013-10036
作者:
Wang, Yong
;
Huang, Yi-bo
;
Zhang, Ran
;
Zhang, Qiu-yu
收藏
  |  
浏览/下载:12/0
  |  
提交时间:2021/06/03
Authentication
Chaotic systems
Mean square error
Application range
Covariance method
Detection and localization
Linear prediction
Minimum mean square errors
Real time performance
Time-frequency parameter
Zero crossing rate
A Multi-Modal Edge Consistency Metric Based on Regression Robustness of Truncated SVD
期刊论文
IEEE SIGNAL PROCESSING LETTERS, 2021, 卷号: 28, 页码: 1065-1069
作者:
Zhu, Mingzhu
;
Yu, Junzhi
;
Gao, Zhang
;
He, Bingwei
;
Liu, Jiantao
收藏
  |  
浏览/下载:36/0
  |  
提交时间:2021/08/15
Image edge detection
Measurement
Robustness
Linear regression
Complexity theory
Noise measurement
Mutual information
Regression robustness
multi-modal corres-pondence
edge consistency
singular value decomposition
Detection of two bright radio bursts from magnetar SGR 1935 + 2154
期刊论文
Nature Astronomy, 2021, 卷号: 5, 页码: 414
作者:
Kirsten, F.
;
Snelders, M. P.
;
Jenkins, M.
;
Nimmo, K.
;
van den Eijnden, J.
收藏
  |  
浏览/下载:42/0
  |  
提交时间:2021/11/18
Astrophysics - High Energy Astrophysical Phenomena
Abstract: Fast radio bursts are millisecond-duration, bright radio signals (fluence 0.1-100 Jy ms) emitted from extragalactic sources of unknown physical origin. The recent CHIME/FRB and STARE2 detection of an extremely bright (fluence ~MJy ms) radio burst from the Galactic magnetar SGR 1935+2154 supports the hypothesis that (at least some) fast radio bursts are emitted by magnetars at cosmological distances. In follow-up observations totalling 522.7 h on source, we detect two bright radio bursts with fluences of 112 ± 22 Jy ms and 24 ± 5 Jy ms, respectively. Both bursts appear to be affected by interstellar scattering and we measure significant linear and circular polarization for the fainter burst. The bursts are separated in time by ~1.4 s, suggesting a non-Poissonian, clustered emission processsimilar to those seen in some repeating fast radio bursts. Together with the burst reported by CHIME/FRB and STARE2, as well as a much fainter burst seen by FAST (fluence 60 mJy ms), our observations demonstrate that SGR 1935+2154 can produce bursts with apparent energies spanning roughly seven orders of magnitude, and that the burst rate is comparable across this range. This raises the question of whether these four bursts arise from similar physical processes, and whether the fast radio burst population distribution extends to very low energies (~10
30
erg, isotropic equivalent).
Glucose biosensor using fluorescence quenching with chitosan-modified graphene oxide
期刊论文
MICRO & NANO LETTERS, 2019, 卷号: 14, 期号: 3, 页码: 344-348
作者:
Li, WJ
;
Jiang, TT
;
Pu, Y
;
Jiao, XD
;
Tan, WQ
收藏
  |  
浏览/下载:48/0
  |  
提交时间:2020/07/08
biochemistry
biosensors
nanosensors
nanofabrication
fluorescence
molecular biophysics
radiation quenching
chemical sensors
sugar
proteins
biomedical optical imaging
graphene compounds
GO-CS
low concentrations
competitive binding
maltose-binding protein
recombinant phycocyanin
far-red fluorescence
MBP-rPC
rPC emission
rPC fluorescence
linear detection range
glucose biosensor
fluorescence quenching
chitosan-modified graphene oxide
low-molecular-weight chitosan
glucose detection
fluorescence resonance energy transfer
graphene oxide nanomaterial
mass 0
1 mg to 1
0 mg
CO
Linear-FM random radar waveform compressed by dechirping method
期刊论文
IET RADAR SONAR AND NAVIGATION, 2019, 卷号: 13, 期号: 7, 页码: 1107-115
作者:
Liu, Jiafang
;
Zhang, Yunhua
;
Dong, Xiao
收藏
  |  
浏览/下载:40/0
  |  
提交时间:2019/08/26
radar resolution
FM radar
random noise
radar imaging
frequency modulation
synthetic aperture radar
radar detection
jamming
dechirping compression method
digital radio frequency memory repeat jammer
random noise waveforms
random radar echo signal
low-speed analogue-to-digital converter
LFM waveform compression
high-resolution circular synthetic aperture radar imaging experiment
linear-FM random radar waveform
linear frequency modulation random radar waveform
Development of a near-infrared ratiometric fluorescent probe for glutathione using an intramolecular charge transfer signaling mechanism and its bioimaging application in living cells
期刊论文
JOURNAL OF MATERIALS CHEMISTRY B, 2019, 卷号: 7, 页码: 809-814
作者:
Zhou, Yong
;
Zhang, Li
;
Zhang, Xuan
;
Zhu, Zhi-Jia
收藏
  |  
浏览/下载:120/0
  |  
提交时间:2019/12/02
Amino acids
Cell signaling
Charge transfer
Fluorescence spectroscopy
Infrared devices
Peptides
Probes, Fluorescence intensity ratio
GSH concentrations
Intra-molecular charge transfer
Intramolecular charge transfers
Linear relationships
Ratiometric fluorescence
Selective detection
Signaling mechanisms, Fluorescence
Optimized Radar Waveform Parameter Design for Small Drone Detection Based on Echo Modeling and Experimental Analysis
期刊论文
IEEE ACCESS, 2019, 卷号: 7
作者:
Li, Tengmingyang
;
Wen, Biyang
;
Tian, Yingwei
;
Wang, Sijie
;
Yin, Yukun
收藏
  |  
浏览/下载:15/0
  |  
提交时间:2019/12/05
Small drone detection
electromagnetic scattering
method of moments (MoM)
numerical simulation
linear frequency modulation (LFM) signal
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