Classification trees (J48) were induced to predict the habitat requirements of tench (Tinca tinca). 306 datasets were used for the given fish during 8 years in the river basins in Flanders (Belgium). The input variables consisted of the structural-habitat (width, depth, gradient slope and distance from the source) and physic chemical (pH, dissolved oxygen, water temperature and electric conduct...

The development and research of a new formulation concrete integrating natural resources such as sands (from dunes and/or quarries) well waste from steel factories in the form granulated slag blast furnaces lead to sand concretes for which improvement specific properties will search an agreement between production cost performance. objective this is study influence dosage size largest aggregate...