Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Michael D. Tocci"'
Publikováno v:
ACM Transactions on Graphics. 30:1-10
Although High Dynamic Range (HDR) imaging has been the subject of significant research over the past fifteen years, the goal of acquiring cinema-quality HDR images of fast-moving scenes using available components has not yet been achieved. In this wo
Autor:
Michael Pernice, Michael D. Tocci
Publikováno v:
SIAM Journal on Scientific Computing. 23:398-418
Globalized inexact Newton methods are well suited for solving large-scale systems of nonlinear equations. When combined with a Krylov iterative method, an explicit Jacobian is never needed, and the resulting matrix-free Newton--Krylov method greatly
Publikováno v:
Water Resources Research. 34:2599-2610
Capillary pressure–saturation-relative permeability relations described using the van Genuchten [1980] and Mualem [1976] models for nonuniform porous media lead to numerical convergence difficulties when used with Richards' equation for certain aux
Autor:
Jonathan P. Dowling, Charles M. Bowden, Michael Scalora, Ishella S Fogel, Michael D. Tocci, Mark J. Bloemer, Jon M Bendickson
Publikováno v:
Pure and Applied Optics: Journal of the European Optical Society Part A. 7:393-407
We present results of theoretical and experimental investigations into spontaneous emission alteration and nonlinear optical effects in thin-film multilayer devices. We begin with a brief section on one-dimensional photonic band gaps (PBGs) and photo
Publikováno v:
SIAM Journal on Scientific Computing. 19:280-290
Many ordinary differential equation (ODE) and differential algebraic equation (DAE) codes terminate the nonlinear iteration for the corrector equation when the difference between successive iterates (the step) is sufficiently small. This termination
Publikováno v:
Computational Geosciences. 2:291-309
Richards' equation (RE) is often used to model flow in unsaturated porous media. This model captures physical effects, such as sharp fronts in fluid pressures and saturations, which are present in more complex models of multiphase flow. The numerical
Publikováno v:
Advances in Water Resources. 20:1-14
The pressure-head form of Richards' equation (RE) is difficult to solve accurately using standard time integration methods. For example, mass balance errors grow as the integration progresses unless very small time steps are taken. Further, RE may be
Autor:
J. M. Bendickson, Jonathan P. Dowling, Richard L. Fork, Charles M. Bowden, Michael D. Tocci, Michael Scalora, Senter B. Reinhardt, Mark J. Bloemer, H. S. Ledbetter, R. P. Leavitt, Rachel J. Flynn
Publikováno v:
Physical Review E. 54:R1078-R1081
We examine optical pulse propagation through a 30-period, GaAs/AlAs, one-dimensional, periodic structure at the photonic band-edge transmission resonance. We predict theoretically---and demonstrate experimentally---an approximate energy, momentum, an
Publikováno v:
Physical Review A. 53:2799-2803
We present results of an experimental investigation into alteration of the spontaneous emission spectrum of GaAs from within one-dimensional photonic band gap (PBG) structures. The PBG samples are multilayer AlAs/${\mathrm{Al}}_{0.2}$${\mathrm{Ga}}_{
Publikováno v:
Applied Physics Letters. 66:2324-2326
We present results of a theoretical investigation into a nonlinear thin‐film multilayer device that exhibits passive anisotropic optical transmission—the analogue of the electronic diode. This optical diode is a nonlinear, asymmetric, distributed