Results 11 to 20 of about 5,329,790 (237)

Theoretical Feasibility Analysis of Fast Back-Projection Algorithm for Moon-Based SAR in Time Domain

open access: yesApplied Sciences, 2022
Nowadays, the Earth observation based on the Moon has attracted attention from many researchers and relevant departments. There also exists a considerable amount of interest in monitoring large-scale and long-term geoscience phenomena using the Moon ...
Guoqiang Chen   +6 more
doaj   +1 more source

Harmonic Analysis in Frequency and Time Domain

open access: yesIEEE Transactions on Power Delivery, 2013
This paper presents a review with a concise description and analysis of the fundamentals, characteristics, analytical details, merits, and drawbacks associated with existing methods in frequency and time domain for harmonic analysis in practical power networks.
A. Medina   +7 more
  +5 more sources

Vibrations analysis of combine harvester seat in time and frequency domain

open access: yesJournal of Mechanical Engineering and Sciences, 2020
Agricultural machineries as one of the main inputs in producing agricultural materials are associated with some problems on occupational health such as vibrations.
Ahmad Jahanbakhshi   +2 more
doaj   +1 more source

Aberrant Water Structure Dynamics in B16 Melanoma-Bearing Mice by Time Domain Refractometry Analysis

open access: yesBiology, 2023
Living bodies comprise approximately 55–75% water to maintain homeostasis. However, little is known about the comprehensive differences in in vivo water molecule dynamics (water structure dynamics; WSD) between physiological and pathophysiological ...
Kahori Furuhata   +8 more
doaj   +1 more source

QPOs in the time domain: an autocorrelation analysis [PDF]

open access: yesAstronomy & Astrophysics, 2010
accepted to A&A, 13 pages, Figs.1 ...
Fukumura, K.   +3 more
openaire   +2 more sources

Sensitivity analysis of electromagnetic quantities in time domain by means of fem [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2004
Sensitivity analysis belongs to the most important tools in optimization theory. It determines the dependence of global or local electromagnetic quantities on geometrical and physical parameters expressed in the form of an objective function. For several
Gawrylczyk Konstanty M., Kugler Mateusz
doaj   +1 more source

Timescale Spectra in High Energy Astrophysics [PDF]

open access: yes, 2002
A technique of timescale analysis performed directly in the time domain has been developed recently. We have applied the technique to studying rapid variabilities of hard X-rays from neutron star and black hole binaries, gamma-ray bursts and terrestrial ...
D Kazanas   +6 more
core   +3 more sources

ELECTROMYOGRAPHY SIGNAL ON BICEPS MUSCLE IN TIME DOMAIN ANALYSIS

open access: yesJournal of Mechanical Engineering and Sciences, 2014
Features extraction is important for electromyography (EMG) signal analysis. The paper’s objective is to evaluate the features extraction of the EMG signal. The experimental set-up for EMG signal acquisition followed the procedures recommended by Europe’
Abu Bakar Yahya   +3 more
doaj   +1 more source

Estimation of sand water content using GPR combined time-frequency analysis in the Ordos Basin, China

open access: yesOpen Physics, 2019
Groundwater is the key factor of determining the growth of vegetation. Identifying the characteristics of groundwater is an important basis to formulate a management plan for water resources and develop the technology of controlling desertification in ...
YongShuai Yan, Yajing Yan, Guizhang Zhao
doaj   +1 more source

Damage Detection in Prestressed Concrete Slabs Using Wavelet Analysis of Vibration Responses in the Time Domain [PDF]

open access: yesJournal of Rehabilitation in Civil Engineering, 2022
Detection of damages in structures during their service life is of vital importance and under attention of researchers. In this paper, it is attempted to identify damages in prestressed concrete slabs using vibration responses obtained from modal testing
Hashem Jahangir   +2 more
doaj   +1 more source

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