Results 11 to 20 of about 2,463,245 (334)

Distributed Temperature Sensing through Network Analysis Frequency-Domain Reflectometry

open access: greenSensors
In this paper, we propose and demonstrate a network analysis optical frequency domain reflectometer (NA-OFDR) for distributed temperature measurements at high spatial (down to ≈3 cm) and temperature resolution. The system makes use of a frequency-stepped,
Rizwan Zahoor   +3 more
doaj   +3 more sources

An analysis of packet sampling in the frequency domain [PDF]

open access: yesProceedings of the 9th ACM SIGCOMM conference on Internet measurement, 2009
Packet sampling techniques introduce measurement errors that should be carefully handled in order to correctly characterize the network behavior. In the literature several works have studied the statistical properties of packet sampling and the way it should be inverted to recover the original network measurements.
Grieco, LA, Barakat, C.
openaire   +1 more source

Time and Frequency Domain Dynamic Analysis of Offshore Mooring

open access: yesJournal of Marine Science and Engineering, 2021
The numerical procedures for dynamic analysis of mooring lines in the time domain and frequency domain were developed in this work. The lumped mass method was used to model the mooring lines. In the time domain dynamic analysis, the modified Euler method
Shi He, Aijun Wang
doaj   +1 more source

Frequency Domain Horizontal Cross Correlation Analysis of RSA

open access: yesAdvances in Electrical and Computer Engineering, 2022
This study shows that a previously published cross correlation based power analysis (CCPA) attack applied to the Montgomery Ladder exponentiation steps of a Rivest Shamir Adleman (RSA) implementation can be improved by working in frequency domain.
AKALP KUZU, E.   +2 more
doaj   +1 more source

Time-Domain Implementation and Analyses of Multi-Motion Modes of Floating Structures

open access: yesJournal of Marine Science and Engineering, 2022
The study of wave-structure interactions involving nonlinear forces would often make use of the popular hybrid frequency–time domain method. In the hybrid method, the frequency-domain analysis could firstly provide the reliable and accurate dynamic ...
Wanan Sheng   +6 more
doaj   +1 more source

Comparison of PSD Analysis Methods in Frequency Domain Fatigue Analysis [PDF]

open access: yes한국정밀공학회지, 2019
If fatigue failure occurs during aircraft operation, it can cause catastrophic injuries. So, it is necessary to study fatigue failure at the design stage. Frequency domain fatigue analysis is used to predict fatigue failure.
Joon Jang   +4 more
doaj   +1 more source

Frequency-Domain Analysis of Linear Time-Periodic Systems [PDF]

open access: yes, 2004
In this paper, we study convergence of truncated representations of the frequency-response operator of a linear time-periodic system. The frequency-response operator is frequently called the harmonic transfer function. We introduce the concepts of input,
Bernhardsson, Bo   +2 more
core   +1 more source

Nonparametric frequency domain analysis of nonstationary multivariate time series [PDF]

open access: yes, 2002
We analyse the properties of nonparametric spectral estimates when applied to long memory and trending nonstationary multiple time series. We show that they estimate consistently a generalized or pseudo-spectral density matrix at frequencies both close ...
Velasco, Carlos
core   +3 more sources

FLAME ANALYSIS BY SELECTED METHODS IN THE FREQUENCY DOMAIN

open access: yesInformatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2022
Diagnostics of pulverized coal combustion can be carried out in the field of process monitoring and analysis of measurement data. The information about changes in the flame is presented in the form of time series, which can be analyzed in the time and ...
Żaklin Grądz   +2 more
doaj   +1 more source

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