Results 21 to 30 of about 119 (101)

Determination of coordinates of the earthquake hypocenter with a known structure of the earth's crust

open access: yesВестник Дагестанского государственного технического университета: Технические науки, 2022
Objective. The aim of the study is to develop methods for determining the coordinates of the hypocenter of an earthquake with a known structure of the earth's crust. Method.
T. G. Aslanov, Yu. A. Sidorkina
doaj   +1 more source

Cassini Ovals in Harmonic Motion Orbits

open access: yesJournal of Geometry and Symmetry in Physics, 2018
The title problem is addressed where the authors consider the planar motion of an harmonic oscillator where the vibration point moves on ellipses known as ``Cassini ovals''. (A Cassini oval is the locus of all points whose distances from two fixed points have a constant product.) The form of these ovals depend solely on the initial velocities.
Boyadzhiev, Khristo N.   +1 more
openaire   +3 more sources

Elastic buckling of Cassini ovaloidal shells under external pressure - theoretical study

open access: yesArchives of Mechanics, 2015
The paper is devoted to shells of revolution with positive and negative Gaussian curvature. The meridian of shells is a plane curve in the Cassini oval form.
P. Jasion, K. Magnucki
doaj   +1 more source

Determining the coordinates of the earthquake hypocenter with the simultaneous determination of seismic wave velocities

open access: yesВестник Дагестанского государственного технического университета: Технические науки, 2022
Objective. The purpose of the study is to determine the coordinates of the earthquake hypocenter with the simultaneous determination of the seismic wave velocity.Method.
Yu. A. Sidorkina, T. G. Aslanov
doaj   +1 more source

Numerical laminar forced convection modelling in a ceramic and concrete solar collector with non-circular duct [PDF]

open access: yesE3S Web of Conferences, 2019
The paper presents simulations of laminar forced convection in non-circular piping of flat solar collectors made of ceramics or concrete, which are characterized by a low thermal conduction coefficient.
Teleszewski Tomasz Janusz
doaj   +1 more source

STEM PROJECT AS A MEANS OF LEARNING MODELING FOR PRE-SERVICE MATHEMATICS AND COMPUTER SCIENCE TEACHERS

open access: yesІнформаційні технології і засоби навчання, 2022
Modern science operates with various methods, among which modeling is one of the most popular. The development of information technology allows the study of analogues (models) with the most significant characteristics of the real object.
Олена Володимирівна Семеніхіна   +2 more
doaj   +1 more source

Open and partially closed models of the solar wind interaction with outer planet magnetospheres: the case of Saturn [PDF]

open access: yesAnnales Geophysicae, 2017
A wide variety of interactions take place between the magnetized solar wind plasma outflow from the Sun and celestial bodies within the solar system.
E. S. Belenkaya   +6 more
doaj   +1 more source

Optimization of Saturn paraboloid magnetospheric field model parameters using Cassini equatorial magnetic field data [PDF]

open access: yesAnnales Geophysicae, 2016
The paraboloid model of Saturn's magnetosphere describes the magnetic field as being due to the sum of contributions from the internal field of the planet, the ring current, and the tail current, all contained by surface currents inside a magnetopause
E. S. Belenkaya   +7 more
doaj   +1 more source

Harmonic motion and Cassini ovals

open access: yes, 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

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