Computing Experience

PHP, C, Perl, HTML, Fortran, Javascript, Maple, Unix shell, VMS DCL, Reduce, Basic, Pascal, PostScript, LaTeX, mathematical libraries, graphics packages, ...

Linux, UNIX, Windows XP/2000/NT/95, MS-DOS, VAX-VMS, IBM-VM/CMS, ...

Experience with scientific programming and computing, with designing, improving and implementing algorithms, with problem solving, and with manipulating and organizing data.

SOME OF THE PAST COMPUTING PROJECTS:

• PHP programming: for example written from scratch the code for a multilingual translation site, or made contribution to a Phorum module. 2005-2006.

• A suite of Cu and UO₂ corrosion simulation codes (in C) using the TRANSIENT engine. 1995-2006.

• TRANSIENT: a finite-difference C package for UNIX and DOS computers for numerical solution of systems of arbitrary nonlinear reaction- diffusion (or more general) equations, using a new adaptable time stepping algorithm. A number of demonstration modules (templates for user supplied functions) is available. 1995-2006.

• Tower of Hanoi puzzle: JavaScript interactive game and fast Tower of Hanoi algorithms. 1998-2001.

• htmltree, pstree upgrade - Perl scripts to generate HTML or PostScript directory tree for UNIX and MS-Windows. 1997-2000.

• printPS: UNIX/VMS/DOS text file layout facility (ASCII to PostScript converter) written in C. 1991-2000.

• Additions to the public domain graphics program Gnuplot. 1994.

• A series of C programs for generating finite-element grids (including bandwidth reduction), and for postprocessing the results of a finite-element program. 1993-2000.

• Fast algorithm for the generation of the quasirandom Halton numbers. 1993.

• C package for the development of the path-integral quantum Monte-Carlo method (one-dimensional) and the testing of the random number generators. It is designed as a number of modules operating on a universal data file on hard disk. This approach (and the data exchange routines used) could also be useful for other problems. 1991/1992.

• Simplification of the 'help' facility of the CMLIB Fortran mathematical subroutine library. 1992.

• Testing the Japanese computer algebra system GAL. 1991.

• Improving the X11 interface for an earlier version of an earlier version of the dynamical systems package DYNAMICS (paper 30-32, conf.proc. 7). 1991.

• Experimental (UNIX dependent) package (combining C, Reduce, and Reduce-generated Fortran code running on different processors) for the calculation of a class of definite integrals (Fourier transform of real rational functions). 1990.

• Package of programs (C, Reduce) for the investigation of the properties of 2-letter substitution rules, particularly those pertaining to 1D deterministic aperiodic physical systems built using such rules (paper 26). 1989/90.

• Investigation of the properties of trace maps of various generalized Fibonacci sequences using Maple (papers 19-23). 1988/89.

• Fortran programs for the visualization of attractors of trace maps of some 2-letter substitution rules. Use of bitwise operations and cyclic lists enabled to handle efficiently the fine structure of very complicated patterns (paper 21). 1988.

• DCL command procedures to facilitate the development of application programs (in Fortran, C, Pascal, ...) on a VAX/VMS system. 1988.

• Investigation of the Gaussian wave packet scattering: derivation of the equations of motion using Maple, and their subsequent numerical integration in Fortran (paper 18). 1987.

• Fortran package (for the study of single-cell morphogenesis) solving coupled partial differential equations of the reaction-diffusion type (using an implicit Crank-Nicholson-like method) on a 2D surface that continually grows in time. Its vectorization for an array processor (paper 16). 1986/87.

• Fortran package for the calculation of the band structure of zinc-blende lattice semiconductors. Modules for the calculation of the pseudopotential matrix elements are available from the CPC Program Library - modules AAQL, AAQM and AAQN (see also paper 7). 1982/83.

• Pascal package for 3D graphics (part of a computer-science course work). 1984.