Results 101 to 110 of about 1,324,757 (302)

Oregon Problem Gambling Awareness Week 2003

, 2003
Signs of a problem gambler -- For parents : signs of a possible gambling problem in youth -- For educators : signs of a possible gambling problem in students -- Older adults and gambling -- Problem gambling, signs and symptoms -- Problem gambling and the

core  

Artificial halo orbits for low-thrust propulsion spacecraft

, 2009
We consider periodic halo orbits about artificial equilibrium points near to the Lagrange points L1 and L2 in the circular restricted three-body problem, where the third body is a low-thrust propulsion spacecraft in the Sun-Earth system.
Baig, Shahid, McInnes, Colin R., McInnes, C.R.   +2 more
core   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

Velocity Syzygies and Bounding Syzygy Moments in the Planar Three-Body Problem

Comptes Rendus. Mathématique
We consider the Newtonian planar three-body problem, defining a syzygy (velocity syzygy) as a configuration where the positions (velocities) of the three bodies become collinear.
Tsygvintsev, Alexei
doaj   +1 more source

Extension of low-thrust propulsion to the autonomous coplanar circular restricted four body problem with application to future Trojan Asteroid missions

, 2010
An Autonomous Coplanar Circular Restricted Four Body Problem (CRFBP) is considered, where the massless body is a low-thrust spacecraft. 'Natural' and 'artificial' (i.e.
Biggs, J.D., BIGGS, JAMES DOUGLAS, Ceccaroni, Marta, Ceccaroni, M.   +3 more
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What Do Large Language Models Know About Materials?

Advanced Engineering Materials, EarlyView.
If large language models (LLMs) are to be used inside the material discovery and engineering process, they must be benchmarked for the accurateness of intrinsic material knowledge. The current work introduces 1) a reasoning process through the processing–structure–property–performance chain and 2) a tool for benchmarking knowledge of LLMs concerning ...
Adrian Ehrenhofer, Thomas Wallmersperger, Gianaurelio Cuniberti   +2 more
wiley   +1 more source

Symbolic Dynamics, Mixing and Entropy in the Three-Body Problem

Open Astronomy, 2016
We use symbolic dynamics in the classic equal-mass free-fall three-body problem. Different methods for constructing symbolic sequences (in the process of numerical integration of trajectories) allow one to demonstrate (and illustrate on the Agekian ...
Mylläri A., Orlov V., Chernin A., Martynova A., Mylläri T.   +4 more
doaj   +1 more source

Collinear libration points in the elliptic restricted three body problem (ER3BP) under radiating and triaxial primaries with gravitational potential from the belt. [PDF]

Heliyon, 2021
Singh J, Isah N.
europepmc   +1 more source

Study of Three-Body Nuclear Force

, 1968
Until now, the nuclear many body problem has been restricted almost entirely to considerations of the two-body force. However the meson theory of nuclear forces predicts that the exchange of mesons between three or more particles will give rise to a ...
Loiseau, Benoit
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Periodic Solutions of a Many-Rotator Problem in the Plane. II. Analysis of Various Motions

, 2003
Various solutions are displayed and analyzed (both analytically and numerically) of a recently-introduced many-body problem in the plane which includes both integrable and nonintegrable cases (depending on the values of the coupling constants); in ...
Calogero, F, Françoise, Jean Pierre, Sommacal, M, Françoise, Jean-Pierre, Calogero, Francesco, FRANCOISE J. P., Sommacal, Matteo   +6 more
core   +1 more source