Results 21 to 30 of about 12,220 (308)

Fast Methods of Coverage Evaluation for Tradespace Analysis of Constellations

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Simulation of distributed space missions (DSMs) for the purpose of phase-A mission design studies and general tradespace analysis is computationally challenging owing to the necessity of evaluating thousands of architecture options.
Vinay Ravindra, Sreeja Nag
doaj   +1 more source

Spin-orbit Rabi oscillations in optically synthesized magnetic fields

open access: yesLight: Science & Applications, 2023
Rabi oscillation has been proven to be one of the cornerstones of quantum mechanics, triggering substantial investigations in different disciplines and various important applications both in the classical and quantum regimes.
Guohua Liu   +6 more
doaj   +1 more source

Fast Switch and Spline Function Inversion Algorithm with Multistep Optimization and k-Vector Search for Solving Kepler’s Equation in Celestial Mechanics

open access: yesMathematics, 2020
Obtaining the inverse of a nonlinear monotonic function f(x) over a given interval is a common problem in pure and applied mathematics, the most famous example being Kepler’s description of orbital motion in the two-body approximation.
Daniele Tommasini, David N. Olivieri
doaj   +1 more source

Orbital angular momentum of the spiral beams [PDF]

open access: yesКомпьютерная оптика, 2019
At first sight, any rotation generates some angular momentum (it is true for a solid body). But these characteristics (rotation and orbital angular momentum) are rather different for optics and mechanics.
Vladimir Volostnikov
doaj   +1 more source

Coulomb Problem for Classical Spinning Particles

open access: yesUniverse, 2023
We consider the motion of a weakly relativistic charged particle with an arbitrary spin in central potential e/r in terms of classical mechanics. We show that the spin–orbital interaction causes the precession of the plane of orbit around the vector of ...
Dmitry S. Kaparulin   +1 more
doaj   +1 more source

Multi-objective optimisation on motorized momentum exchange tether for payload orbital transfer [PDF]

open access: yes, 2007
The symmetrical motorised momentum exchange tether, is intended to be excited by a continuous torque, so that, it can be applied as an orbital transfer system. The motor drive accelerates the tether, and increases the relative velocity of payloads fitted
Yi Chen   +3 more
core   +1 more source

A quantitative evaluation of computational methods to accelerate the study of alloxazine-derived electroactive compounds for energy storage

open access: yesScientific Reports, 2021
Alloxazines are a promising class of organic electroactive compounds for application in aqueous redox flow batteries (ARFBs), whose redox properties need to be tuned further for higher performance.
Qi Zhang, Abhishek Khetan, Süleyman Er
doaj   +1 more source

Existence and convergence results for the Galerkin approximation of an electronic density functional [PDF]

open access: yes, 2010
We formulate and analyze a model for the study of finite clusters of atoms or localized defects in infinite crystals based on orbital-free density functional theory.
CHRISTOPH ORTNER   +8 more
core   +1 more source

Electronic Structure Calculations at Macroscopic Scales [PDF]

open access: yes, 2007
Electronic structure calculations, especially those using density-functional theory have provided many insights into various materials properties in the recent decade.
Gavini, Vikram
core   +1 more source

Majorana stellar representation of twisted photons

open access: yesPhysical Review Research, 2023
Majorana stellar representation, which visualizes a quantum spin as points on the Bloch sphere, allows quantum mechanics to accommodate the concept of trajectory, the hallmark of classical physics. We extend this notion to the discrete cylinder, which is
Nicolas Fabre   +4 more
doaj   +1 more source

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