Contributors: Alexander Amberg, Henrik Antti, Dorrit Baunsgaard, Richard Beger, Stephen J. Bruce, Andrew Craig, Clare Daykin, John N. Haselden, Elaine Holmes, Hector C. Keun, Par Jonsson, Erik Johansson, Sunil Kochhar, Kerstin Kramer, Arno Krotzky, Lois Lehman-McKeeman, Johann Lindberg, Mahendra Navarange, Jeremy K. Nicholson, Jake T.M. Pearce, Robert Plumb, Jonathan Powell, Hartmut Schäfer, In...

Manuel Tiglio, Luis Lehner, and David Neilsen Department of Physics and Astronomy, Louisiana State University, 202 Nicholson Hall, Baton Rouge, Louisiana 70803-4001, USA Center for Computation and Technology, 302 Johnston Hall, Louisiana State University, Baton Rouge, Louisiana 70803-4001, USA Center for Radiophysics and Space Research, Cornell University, Ithaca, NY 14853, USA Department of Ph...

We describe an algorithm for animating time-dependent quantum wave functions in one dimension with very high accuracy. The algorithm employs the Crank–Nicholson approximation for the time dependence along with a Numerov extension of the discrete transparent boundary conditions described recently by Ehrhardt. We illustrate the power of this approach by simulating the decay of alpha particles fro...

Qinlong Luo,1,2 Andrew Nicholson,1,2 José Riera,3 Dao-Xin Yao,4 Adriana Moreo,1,2 and Elbio Dagotto1,2 1Department of Physics and Astronomy, The University of Tennessee, Knoxville, Tennessee 37996, USA 2Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 3Instituto de Fı́sica Rosario, Universidad Nacional de Rosario, 2000-Rosario, Argentina 4...

Writing Group: Professor P Armstrong (Imaging), Dr J Congleton,* Mr S W Fountain (Chairman),* Dr T Jagoe, Dr D F McAuley,* Dr J MacMahon,* Dr M F Muers,* Mr R D Page,* Dr P K Plant,* Dr M Roland, Dr R M Rudd, Mr W S Walker,* Dr T J Williams*. Specialist advisors: Professor M I Saunders (Royal College of Radiologists), Dr A G Nicholson (Royal College of Pathologists). *Members of the core Writin...

The paper presents a numerical study of the periodic self focusing behavior of a laser pulse propagation in a gas filled capillary plasma with a parabolic electron density profile. An implicit and inherently stable Crank-Nicholson method was used to demonstrate the periodic laser beam waist behavior inside the tube discharge. The dependence of the tube radius and beam waist on maximum intensity...

ological incubator. TERRESTRIAL BACTERIA TYPICALLY RECOVERED FROM MARS SPACECRAFT DO NOT APPEAR ABLE TO GROW UNDER SIMULATED MARTIAN CONDITIONS. Andrew C. Schuerger, Bonnie Berry, and Wayne L. Nicholson, Dept. of Plant Pathology, University of Florida, Space Life Sciences Lab, Kennedy Space Center, FL 32899; [email protected]; Dept. of Biology, Univ. of Central Florida, Orlando, FL 32...

Many temporal discretization methods for linear evolution equations converge uniformly on compact time intervals at the rate 1 nα only for sufficiently smooth initial data. It is shown that these methods can be regularized such that the new schemes converge ‘in the average’ at the rate 1 nα for all initial data. Examples given include the Crank-Nicholson scheme and the alternating direction imp...

Gioel Calabrese, Luis Lehner, Oscar Reula, Olivier Sarbach, and Manuel Tiglio 1 Department of Physics and Astronomy, Louisiana State University, 202 Nicholson Hall, Baton Rouge, LA 70803-4001 2 School of Mathematics, University of Southampton, Southampton, SO17 1BJ, UK 3 FaMAF, Universidad Nacional de Cordoba, Cordoba, Argentina 5000 4 Center for Computation and Technology, 302 Johnston Hall, L...

In this paper, we consider the continuous and the discrete delay diffusive Nicholson s Blowflies models with different types of boundary conditions. Our aim is to give some sufficient conditions for oscillation of all positive solutions about the positive steady state. We show that these conditions have essentially first order character by reducing the problem of oscillation of the boundary val...