Includes bibliographical references.

Electroweak processes and precision tests, P. Roy; lectures on the physics of massive neutrinos, B. Kayser; standard model expectations for CP violation, R.D. Peccei; supersymmetric models and their phenomenology, G.G. Ross; towards a pure gauge origin of the fundamental forces - unity through preons, J.C. Pati; superparticle search at hadron colliders, D.P. Roy; solar neutrinos, nucleon decay and atmosphere neutrinos, J.L. Stone; massive neutrinos as probe of higher unification, R.N. Mohapatra; dark matter, galaxies and large scale structure in the universe, J.R. Primack; an alternative to Big Bang cosmology, J.V. Narlikar; how universal is Hubble's law?, J.V. Narlikar; experimental results from LEP, S. Banerjee; recent results from the D0 detector, R. Raja; confirmation of a scaling law for particle fragmentation, R. Raja; COBE tutorial and recent results, E.L Wright.

These proceedings contain contributions from leading scientists working on modelling and numerical simulation of flows through porous media and on mathematical analysis of the equations associated with the modelling. There are a number of contributions on rigorous results for stochastic media and for applications to numerical simulations. Modelling and simulation of environment and pollution are also the subject of several papers. The published material herein gives an insight into the state of the art in the field with special attention on rigorous discussions and results.