Results 21 to 30 of about 20,841 (150)
Slip at the surface of a general axi-symmetric body rotating in a viscous fluid
Archives of Mechanics, 2011 The rotational motion of an arbitrary axi-symmetric body in a viscous fluid is discussed using a combined analytical-numerical technique. A singularity method based on a continuous distribution of a set of Sampson spherical singularities, namely ...
E.A. Ashmawy
doaj +1 more source
Development of BREM Software for Bistatic Radar’s Range Estimations
Ingeniería, 2017 A radar device is considered to be bistatic when the transmitter and receiver are placed on locations separated by a distance considerably greater than the distance from the target.
Yunior Coya Márquez +1 more
doaj +1 more source
Constant co-polarized echo curves on the Poincare sphere
Journal of Telecommunications and Information Technology, 2001 A set of useful formulae has been presented allowing for computation of the equipower curves on the Poincare sphere of the co-polarized radar returns for both mono- and bi-static scatterings.
Zbigniew H. Czyż
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Cassini ovals and other curves
, 2013 Fix two points F_1 and F_2 in the plane and consider the locus of a point P so that the sum of the distances from P to F_1 and F_2 equals some constant.
Boucher, Chris
core +3 more sources
Harmonic motion and Cassini ovals
, 2013 We consider a two-dimensional free harmonic oscillator where the initial position is fixed and the initial velocity can change direction. All possible orbits are ellipses and their enveloping curve is an ellipse too. We show that the locus of the foci of all elliptical orbits is a Cassini oval.
Boyadzhiev, Khristo N. +1 more
openaire +2 more sources
Cassini nightside observations of the oscillatory motion of Saturn's northern auroral oval [PDF]
Journal of Geophysical Research: Space Physics, 2014 AbstractIn recent years we have benefitted greatly from the first in‐orbit multi‐wavelength images of Saturn's polar atmosphere from the Cassini spacecraft. Specifically, images obtained from the Cassini UltraViolet Imaging Spectrograph (UVIS) provide an excellent view of the planet's auroral emissions, which in turn give an account of the large‐scale ...
Bunce, E. J. +10 more
openaire +5 more sources
Different Approaches to Clustering – Cassini Ovals
, 2022 Classical cluster analysis or clustering is the task of grouping of a set of objects in such a way that objects in the same group are more similar to each other than to those in other groups or clusters.
Grabusts, Pēteris
core
A Multi Foci Closed Curve: Cassini Oval, its Properties and Applications [PDF]
Doğuş Üniversitesi Dergisi, 2013 Cassini ovali, duzlem uzerindeki sabit iki noktaya olan mesafelerinin carpimi yine bir sabit olan noktalar kumesinin olusturdugu kuadratik bir egri olarak tanimlanabilir. Benzersiz ozellikleri ve geometrik profili, bu ovalleri pek cok askeri ve ticari alanda kullanilmasina imkan taniyan ustun bir arac haline getirmis, ayrica analitik geometriye ve ...
openaire +3 more sources
, 2007 Presentazione di un manoscritto inedito, ritrovato a Perinaldo in casa dei discendenti di Cassini e Maraldi e riportante discussioni astronomiche di G.D.
BONOLI, FABRIZIO, A. Cassini
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A new combination in Strophopappus (Asteraceae, Vernonieae, Lepidaploinae)
Nordic Journal of Botany, Volume 2026, Issue 9, September 2026.Revisions of herbarium collections reveal a new combination in Strophopappus (Asteraceae, Vernonieae, Lepidaploinae). Strophopappus comprises nine species occurring in South America, eight of which are endemic to Brazil. Currently, Vernonia riedeliana is treated as a synonym of Strophopappus bicolor.
Danielle Remor +2 more
wiley +1 more source