Effects of high-latitude atmospheric gravity wave disturbances on artificial HF radar backscatter [PDF]
, 2006 International audienceObservations of HF radar backscatter from artificial field-aligned irregularities in an ionosphere perturbed by travelling disturbances due to atmospheric gravity waves are presented.
Tim K. Yeoman (7583066) +14 more
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Comparing the irregularity and the total irregularity of graphs
Ars Mathematica Contemporanea, 2014 Albertson has defined the irregularity of a simple undirected graph G as irr( G ) = ∑ u v ∈ E ( G ) ∣ d G ( u ) − d G ( v )∣, where d G ( u ) denotes the degree of a vertex u ∈ V ( G ) . Recently, in a new measure of irregularity of a graph, so-called the total irregularity , was defined as irr t ( G ) = 1/2 ...
Darko Dimitrov, Riste Skrekovski
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Irregularity and Modular Irregularity Strength of Wheels [PDF]
Mathematics, 2021 It is easily observed that the vertices of a simple graph cannot have pairwise distinct degrees. This means that no simple graph of the order of at least two is, in this way, irregular. However, a multigraph can be irregular. Chartrand et al., in 1988, posed the following problem: in a loopless multigraph, how can one determine the fewest parallel ...
Martin Bača +2 more
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Quantitative irregularity analysis for spinning detonation of premixed CH4+2O2
工程科学学报, 2016 CH4 is a typical and special detonation mixture. Based on the experimental method, digital image processing was performed to study the detonation stability theory of methane. A premixed CH4 + 2O2 mixture was ignited in a tube with an inner diameter of 50.
ZHAO Huan-juan +2 more
doaj +1 more source
Scintillation and irregularities from the nightside part of a Sun-aligned polar cap arc [PDF]
, 2016 In this paper we study the presence of irregularities and scintillation in relation to the nightside part of a long-lived, Sun-aligned transpolar arc on 15 January 2015.
Lorentzen, Dag Arne +9 more
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Principles of accounting in the Duchy of Warsaw – problems with cash accounts [PDF]
Zeszyty Teoretyczne RachunkowościPurpose: The aim of the article is to present the accounting principles used in the Duchy of Warsaw (1807–1815) and to provide arguments that support these principles.Methodology/approach: The methodology involves analyzing historical sources, con ...
MAŁGORZATA GARSTKA
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Plasma Dynamics Associated With Equatorial Ionospheric Irregularities
Geophysical Research Letters, 2018 The Communication/Navigation Outage Forecasting System satellite was operational from 2008, a period of deep solar minimum, to 2015, a period of moderate solar conditions.
Jonathon Matthew Smith, R. A. Heelis
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Doppler shift simulation of scattered HF signals during the Troms HF pumping experiment on 16 February 1996 [PDF]
, 2002 International audienceComparisons between bistatic scatter measurements and simulation results during the Tromsø HF pumping experiment on 16 February 1996 are made.
N. F. Blagoveshchenska +17 more
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Journal of Space Weather and Space Climate, 2019 We analyze the amplitude scintillation on L-band signals over San Miguel de Tucumán (Argentina), focusing on the multi-scale variability and speculating on the possible relationship between forcing factors from the geospace and the ionospheric response ...
Spogli Luca +7 more
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Prevalence of menstrual problems and their association with psychological stress among students of a medical college in Northern India [PDF]
New Indian Journal of OBGYNBackground: Regular menstruation symbolizes a normal reproductive health of woman; however, all women experience some form of menstrual problem in their lifetime. Medical undergraduates are mostly in the age group of late adolescence and early twenties.
Shaugfta Aara +3 more
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