The growing use of mathematical models in hydraulics has not made physical models obsolete. They keep pace with mathematical models and in some cases make progress in conjunction with them Physical models continue to be developed: more precise use of similitude criteria, better knowledge of scale effects, new and more complex types of model,use of various artifices, more ade- quate instrumentation, automation of the operation of model- all these pOint to that development. What was needed was to make a survey of the situation, and this was the principal aim of the NATO Advanced Study Institute...

Contrary to what we have been led to believe, a ""Utopian Society"" is possible on Earth. Looking at the current state of chaos in the World and what Humankind has been going through for millenniums now, although centuries ago the art of Cooperation and Unity had been mastered; We need to ask the question of ""Why are We caught in this unending hell despite the existence of such technological advances, inventions, innovations and the unquestionable and undeniable ability to immediately and decisively eradicate World poverty, inequality, suffering and unnecessary deaths?."" Countless...