Results 31 to 40 of about 15,655 (316)
FFT size optimization for LTE RoF in nonlinear fibre propagation [PDF]
, 2012 This papers investigates the performance of the fast Fourier transform (FFT) sizes- 64, 128, 256, 512 and 1024 for the orthogonal frequency division multiplexing (OFDM) scheme in 3 rd generation partnership program (3GPP)-long term evolution (LTE) and ...
Ghassemlooy, Zabih +7 more
core +1 more source
Dynamics and spatio-temporal distribution of geomagnetic disturbances during periods of increased solar activity and magnetic storms [PDF]
E3S Web of Conferences, 2020 A detailed spatio-temporal analysis of magnetic data was performed during the periods of magnetic storms on October 02, 2013 and September 27, 2019 based on measurements of the station network.
Mandrikova Oksana, Rodomanskay Anastasia
doaj +1 more source
Determining Wind Shear Threshold by Using Historical Sounding Data in Experimental Area
AtmosphereThis paper conducts a technical study on a method for determining the occurrence threshold of wind shear based on historical sounding data. After analyzing the impact of low-altitude wind shear on aircraft flight safety, a method for determining the ...
Tingting Shu +5 more
doaj +1 more source
Magnetic location of a possible earthquake epicentre area: a mathematical model
Geomatics, Natural Hazards & Risk, 2016 We study one of the problems of the theory of seismo-electromagnetic methods of earthquake prediction, namely, the physical nature of magnetic location of a future epicentre.
O.B. Novik +3 more
doaj +1 more source
Lidar diagnostics of ionosphere precipitations
E3S Web of Conferences, 2018 Lidar is considered as an electron energy detector of ionosphere precipitations, and the cleaning of radiation belts is like the energy pumping of the ionosphere layer.
Shevtsov Boris +2 more
doaj +1 more source
A Compact Spin‐Coated Graphene UWB Antenna for Breast Tumor Detection
Advanced Engineering Materials, EarlyView.A compact, spin‐coated graphene ultra‐wideband patch antenna designed for breast tumor detection, capable of distinguishing between malignant and benign tumors. This innovative antenna can serve as an effective initial screening tool, particularly in resource‐limited settings such as rural areas, where access to advanced medical equipment like MRI and ...
Raja Rashidul Hasan +9 more
wiley +1 more source
E3S Web of Conferences, 2016 To investigate high frequency geoacoustic emission, a receiving system based on a compound vector receiver was installed in Kamchatka. It allows the authors to determine the direction of sound wave arrival.
Marapulets Yuriy +2 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source
Diagnostics of geomagnetically-induced currents in high-tension electric transmission lines [PDF]
E3S Web of Conferences, 2019 The problem of geomagnetically-induced currents (GIC) effect on electrotechnical systems is topical as long as uninterrupted power distribution is critically important for all the spheres of human activity.
Sivokon Vladimir +2 more
doaj +1 more source
Signal Processing Methods to Improve Ocean Surface Wave Estimation from a High Frequency Surface Wave Radar [PDF]
, 2011 High frequency surface wave radars are operated as a remote sensor to measure ocean surface parameters to ranges exceeding 200-300 km from the coastline.
Wang, Wei
core