Results 31 to 40 of about 119 (101)

A Multi Foci Closed Curve: Cassini Oval, its Properties and Applications [PDF]

open access: yesDoğuş 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

Applications of the Symmetrical Structures of Cassini Ovals

open access: yesSymmetry
One of the geometric figures that has symmetry properties is the Cassini oval. The Cassini oval is a curve defined as the locus of points in the plane such that the product of the distances to two fixed points is constant. Cassini ovals are named after the astronomer Giovanni Domenico Cassini, who studied them in 1680.
Peter Grabusts, Oleg Uzhga-Rebrov
openaire   +1 more source

A numerical investigation of laminar forced convection in a solar collector with non-circular duct

open access: yesE3S Web of Conferences, 2017
This paper presents a two-dimensional numerical study to investigate laminar flow in a flat plate solar collector with non-circular duct (regular polygonal, elliptical, and Cassini oval shape) featuring forced convection with constant axial wall heat ...
Teleszewski Tomasz Janusz
doaj   +1 more source

A new combination in Strophopappus (Asteraceae, Vernonieae, Lepidaploinae)

open access: yesNordic 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

Saturn's Auroral Dusk Sector Magnetosphere‐Ionosphere Coupling During Cassini's Proximal Orbits

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract The final twenty‐two low‐altitude passes of the Cassini spacecraft enabled the determination of Saturn's field‐aligned currents (FACs) from magnetometer measurements at lower altitudes than previously achieved. We investigate southern dusk‐side FAC behavior with four objectives: how in situ MAG measurements compare to the highly variable ...
S. W. Farr   +5 more
wiley   +1 more source

Detecting an Ocean Inside Callisto With Geodetic Measurements From Europa Clipper and Juice

open access: yesGeophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract Determining whether Callisto hosts a subsurface ocean, and the implications for material and energy transport through its hydrosphere, is of high interest to NASA's Europa Clipper and ESA's Juice missions. A recent reanalysis of Galileo magnetometer data strengthens the ocean hypothesis, but definitive confirmation awaits new measurements.
Flavio Petricca   +2 more
wiley   +1 more source

Brauer-Type Inclusion Sets of Zeros for Chebyshev Polynomial

open access: yesMathematics, 2019
The generalized polynomials such as Chebyshev polynomial and Hermite polynomial are widely used in interpolations and numerical fittings and so on. Therefore, it is significant to study inclusion regions of the zeros for generalized polynomials.
Xiao Feng, Yaotang Li
doaj   +1 more source

Different Approaches to Clustering – Cassini Ovals

open access: yesInformation Technology and Management Science, 2017
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. There are many clustering algorithms for solving different tasks. In the research, an interesting method - Cassini oval - has been identified.
openaire   +2 more sources

Peaking Into Oberon's Past: An Isolated Peak Could Imply the Existence of a Subsurface Ocean or Convecting Ice Shell

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 8, August 2026.
Abstract The Uranian moons, last visited in 1986 by Voyager 2, remain an intriguing yet under‐explored set of targets. Understanding the thermal structure and evolution of these moons is key to addressing one of the highest priority goals in planetary science: identifying if any are ocean worlds today or have been in the past. On Oberon, one feature in
M. Blanco‐Rojas   +2 more
wiley   +1 more source

Reduction of Heat Losses in a Pre-Insulated Network Located in Central Poland by Lowering the Operating Temperature of the Water and the Use of Egg-shaped Thermal Insulation: A Case Study

open access: yesEnergies, 2019
This paper presents possible variants of reducing the heat loss in an existing heating network made from single pre-insulated pipes located in central Europe.
Dorota Anna Krawczyk   +1 more
doaj   +1 more source

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