Results 121 to 130 of about 11,457,962 (286)

O problemie autorstwa paradoksu nocnego nieba

open access: yesZagadnienia Filozoficzne w Nauce, 2007
In this paper a prehistory of the so called Olbers' paradox is discussed. The stress is laid not on the paradox and its solution within contemporary cosmology, but rather on its authorship: it is argued that Olbers was not the first to formulate the ...
Tadeusz Pabjan
doaj  

Periodic Orbits in the Kepler-Heisenberg Problem

open access: yes, 2013
One can formulate the classical Kepler problem on the Heisenberg group, the simplest sub-Riemannian manifold. We take the sub-Riemannian Hamiltonian as our kinetic energy, and our potential is the fundamental solution to the Heisenberg sub-Laplacian. The
Shanbrom, Corey
core  

Particle Swarm Optimization for Orbital Configuration of Satellite Constellations in Geostationary Orbit

open access: yesAerospace
The geostationary orbit (GEO), a finite one-dimensional longitudinal resource, has emerged as a critical research focus driven by the rapid development of global communication systems.
Peilin Li   +3 more
doaj   +1 more source

Classical mechanics in noncommutative spaces: confinement and more

open access: yesEuropean Physical Journal C: Particles and Fields
We consider a semi-classical approximation to the dynamics of a point particle in a noncommutative space. In this approximation, the noncommutativity of space coordinates is described by a Poisson bracket.
Vladislav Kupriyanov   +2 more
doaj   +1 more source

Novel hybrid kepler optimization algorithm for parameter estimation of photovoltaic modules

open access: yesScientific Reports
The parameter identification problem of photovoltaic (PV) models is classified as a complex nonlinear optimization problem that cannot be accurately solved by traditional techniques.
Reda Mohamed   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy