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pro vyhledávání: '"Crews, D."'
Adiabatic compression of a self-magnetizing current filament (a Z pinch) is analyzed via the adiabatic invariants of its constituent cyclotron and betatron motions. Chew-Goldberger-Low (CGL) models are recovered for both trajectories but with distinc
Externí odkaz:
http://arxiv.org/abs/2411.06674
Single-particle orbits are investigated as the basis of a coherent kinetic theory. Analytic solutions including azimuthal circulation are obtained in elliptic functions, of which ideal cyclotron and betatron motions are limiting solutions. The ellipt
Externí odkaz:
http://arxiv.org/abs/2411.06669
Autor:
Crews, D. W., Shumlak, U.
Continuum kinetic simulations are increasingly capable of resolving high-dimensional phase space with advances in computing. These capabilities can be more fully explored by using linear kinetic theory to initialize the self-consistent field and phas
Externí odkaz:
http://arxiv.org/abs/2402.02180
Autor:
Crews, D. W.
As a method of universal approximation deep neural networks (DNNs) are capable of finding approximate solutions to problems posed with little more constraints than a suitably-posed mathematical system and an objective function. Consequently, DNNs hav
Externí odkaz:
http://arxiv.org/abs/2203.00147
Autor:
Crews, D. W.
The discontinuous Galerkin (DG) finite element method is conservative, lends itself well to parallelization, and is high-order accurate due to its close affinity with the theory of quadrature and orthogonal polynomials. When applied with an orthogona
Externí odkaz:
http://arxiv.org/abs/2202.13532
Autor:
Crews, D. W., Shumlak, U.
The accuracy of quasilinear theory applied to the electron bump-on-tail instability, a classic model problem, is explored with conservative high-order discontinuous Galerkin methods applied to both the quasilinear equations and to a direct simulation
Externí odkaz:
http://arxiv.org/abs/2202.13528
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Akademický článek
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Publikováno v:
Annals of Human Biology. Feb2019, Vol. 46 Issue 1, p3-16. 14p.
Autor:
Chen, C.-C. (JJ), Crews, D.
Publikováno v:
International Journal of Kinesiology in Higher Education; July 2023, Vol. 7 Issue: 3 p181-193, 13p