Results 71 to 80 of about 3,039,671 (230)

Investigating Alfvénic wave propagation in coronal open-field regions [PDF]

, 2015
The physical mechanisms behind accelerating solar and stellar winds are a long-standing astrophysical mystery, although recent breakthroughs have come from models invoking the turbulent dissipation of Alfvén waves.
Morton, Richard, Tomczyk, Steve, Pinto, Rui   +2 more
core   +1 more source

Analysis of the efficiency of earthquake prediction based on the anomalous behavior of ionospheric parameters on the eve of earthquakes in the Kamchatka region

E3S Web of Conferences, 2018
A method is presented for short-term prediction of strong earthquakes, in which the precursors are considered the excess of current values of foF2 critical frequency of the ionospheric F2 layer over the median values in periods of perturbed state of the ...
Bogdanov Vadim, Pavlov Aleksey
doaj   +1 more source

A 3D pyramid network for short ranged high data rate communications at 60 GHz [PDF]

, 2004
At millimeter-wave frequencies, the propagation characteristics approximate to that of light and high attenuation is usually incurred in the presence of people and objects.
Nix, AR, Strauch, Paul, Leong, SC, Lee, BS, Beng Sin Lee, A.R. Nix, P. Strauch, C.S.C. Leong   +7 more
core   +1 more source

Calculation of seismic regime parameters on the basis of a probabilistic model of Kamchatka earthquake catalogue

E3S Web of Conferences, 2016
In the present paper on the basis of a probabilistic interpretation of the earthquake repetition law, simple formulas were obtained which allow us from the known number of earthquake events in a representative interval of energy class (magnitude) to ...
Bogdanov Vadim, Pavlov Aleksey
doaj   +1 more source

Modeling of Radio-wave Propagation in Forest by the Method of Parabolic Equation

, 2018
The influence of forests on the propagation of radio waves is an actual topic of research stimulated by practical tasks related to the operation of various types of communication, radar, radio navigation, geodesy, and remote sensing of the earth's ...
M. Mikhailov, E. S. Malevich, V. A. Permyakov   +2 more
semanticscholar   +1 more source

Accelerating Radio Wave Propagation Algorithms by Implementation on Graphics Hardware

, 2010
Radio wave propagation prediction is a fundamental prerequisite for planning, analysis and optimization of radio networks. For instance coverage analysis, interference estimation or channel and power allocation all rely on propagation predictions.
Kuhlen, Torsten, Rick, Tobias, Torsten Kuhle, Torsten Kuhlen, Tobias Rick   +4 more
core   +1 more source

Methods for spatial direction finding of geoacoustic signals at Mikizha Lake in Kamchatka

E3S Web of Conferences, 2018
In the framework of the work, a spatial analysis of geoacoustic emissions properties recorded by a hydroacoustic receiver in a shallow Mikizha Lake, Kamchatkskiy kray, is carried out. The features of geoacoustic pulse registration are considered, methods
Shcherbina Albert, Solodchuk Alexandra
doaj   +1 more source

АНАЛИЗ ЯВЛЕНИЙ КОСМИЧЕСКОЙ ПОГОДЫ В 2014 ГОДУ ПО НАБЛЮДЕНИЯМ В СЕВЕРО-ВОСТОЧНОМ РЕГИОНЕ РОССИИ

Vestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2016
Рассмотрены геофизические эффекты солнечных событий 2014 г. по системе наблюдений северо-востока России. Выявлены эффекты возбуждения волн в атмосферном электричестве приземного слоя воздуха в результате внезапного начала магнитной бури. Накануне событий
Smirnov, S.E., Bychkov, V.V., Mandrikova, O.V., Solovev, I.S., Polozov, A., Zalyaev, T.L., Khomutov, S.Y., Baishev, D.G., Poddelsky, I.N., Dumbrava, Z.F.   +9 more
doaj   +1 more source

Radio wave propagation simulation on the Cray T3D

, 1998
The ParFlow method permits the simulation of outdoor wave propagation in urban environment, describing the physical system in terms of the motion of fictitious particles over a lattice. This paper begins with a brief introduction to the ParFlow method.
Guidec, Frédéric, Kuonen, Pierre, Calégari, Patrice   +2 more
openaire   +3 more sources

Radio over fibre distribution systems for ultra-wide band and millimetre wave applications [PDF]

, 2011
Short range wireless technology such as ultra-wideband (UWB) and 60 GHz millimetre wave (mm-wave) play a key role for wireless connectivity in indoor home, office environment or large enclosed public areas.
Shams Eldin, Haymen
core   +2 more sources