This paper describes methods that can be used for modeling radia-tive properties of light sources and materials, in a radiosity computation algorithm. These methods have been designed in order to improve the photo-realistic rendering of complex architectural scenes as well as to allow illumination engineering applications. They are based on the accurate modeling of the spatial and spectral emit...

Multi-annual dust transport simulations have been performed using a Mars general circulation model containing a dust transport scheme which responds to changes in the atmospheric state. If the dust transport is ‘radiatively active’ the atmospheric state also responds to changes in the dust distribution. This paper examines the suspended dust distribution obtained using different lifting paramet...

Attosecond pulse emission via high harmonics generated in a dense medium is studied theoretically. We solve numerically the three-dimensional Schrödinger equation for a single-electron atom in the combined field of the neighboring ions and the laser and average the results over different random positions of the particles using the Monte Carlo method. The XUV spectra are calculated for different...

– The size segregation of granular materials in a vibrating container is investigated using Molecular Dynamics. We find that the rising of larger particles is accompanied by the existence of convection cells even in the case of the lowest possible frequencies. The convection can, however, also be triggered by the larger particle itself. The possibility of rising through this mechanism strongly ...

It's natural to assume that network protocol design is by now a well-known science, where the designers of today's standards take care to understand the tricks and pitfalls learned from previous protocols. This talk dispells this and other myths. It is intended to be provocative, making people question the things people assume are true; instructive, giving hints as to how to avoid some of the p...

Artykuł traktuje o reportażach dziennikarki Polskiego Radia Łódź, Joanny Sikorzanki, podejmujących tematykę Łodzi żydowskiej. Przemierzając współcześnie ulice, przy których mieszkali niegdyś Żydzi, eksplorując tereny, gdzie mieściło się getto, reportażystka stara zbudować pomost pamięci między przeszłością i teraźniejszością, przywrócić znaczenie historycznej części miasta. Celem artykułu jest ...