Water phenomena are some of the most visually spectacular effects found in nature. This paper presents a novel efficient hybrid method to model turbulent water such as fast flowing rivers and waterfalls with the intent that the model can be used as part of a larger environment or scene. The model presented uses hydrostatic theory to incorporate a 2D height field and a particle system to model r...

...........................................................................................................................................1 List of Figures..................................................................................................................................3

The mean annual effective dose from natural radionuclides for users of drilled wells was estimated to be 0.41 mSv, for users of wells dug in the ground 0.05 mSv and for people using water from waterworks 0.02 mSv. The highest effective dose from drinking water was caused by 222Rn (Fig. 2) constituting 75% and 60% of the total effective dose caused by all natural radionuclides for drilled-well u...

Water phenomena are some of the most visually spectacular effects found in nature. The purpose of this project is to try to model flowing water in rivers, over waterfalls etc with the intent that the model can be used as part of a larger environment or scene. The model presented here uses hydrostatic theory to incorporate a 2D height field and particle system to model respectively the main volu...

In this review we rst address 2 questions: why do we need kilometer-scale muon and neutrino detectors? what do we learn from the operating Baikal and AMANDA detectors about the construction of kilometer-scale detectors? I will subsequently discuss the challenges for building the next-generation detectors. The main message is that these are diierent, in fact less ominous, than for commissioning ...

We study minimal time strategies for the treatment of pollution of large volumes, such as lakes or natural reservoirs, with the help of an autonomous bioreactor. The control consists in feeding the bioreactor from the resource, the clean output returning to the resource with the same flow rate. We first characterize the optimal policies among constant and feedback controls, under the assumption...