pollution has become a very serious threat to our environment. monitoring pollution is the rst step toward planning to save the environment. the use of dierential equations, monitoring pollution has become possible. in this paper, a ritz-collocation method is introduced to solve non-linear oscillatory systems such as modelling the pollution of a system of lakes. the method is based upon bernoul...

We propose and justify a new approach to constructing optimal nonlinear transforms of random vectors. We show that the proposed transform improves such characteristics of rank-reduced transforms as compression ratio, accuracy of decompression and reduces required computational work. The proposed transform Tp is presented in the form of a sum with p terms where each term is interpreted as a part...

CMACS workshop NYC 2012 " Programs as models " project Import tools from theoretical computer science in order to describe and analyze biological systems Develop new technique to cope with the complexity of the cell Theoretical computer science Abstract interpretation Concurrency theory Abstract. Modelling is becoming a necessity in studying biological signalling pathways, because the combinato...