This article analyzes the main aspects of federative political systems according to classical and contemporary theories and the case of the Brazilian health sector. Brazil presents a federative configuration founded on cooperation as a result of the democratic transition in which the consensual dimensions of democracy were strengthened. On the other side, the weakening of the madisonian aspects...

A simulation model was developed to estimate the effect of deficit irrigation upon crop yield. The model was designed to provide relative yield estimates for numerous combinations of irrigation system, crop growth and irrigation management parameters. A daily soil moisture balance was used to predict evaporation and transpiration from which crop yields were estimated. Gross irrigation water req...

abstract collection and identification snails of dez river in khuzestan province in iran has been investigated in 2012-2013. for the first time, 29 snail species are identified in dez river in khuzestan, which they belong to 15 genera from 10 families identification was done according to morphometric characters including shape, size of shell, dextral and sinistral position of the shell, opercul...

for the performance improvement and higher flexibility in irrigation networks, applications of automatic systems are expanding and on evaluation of their success for achieving the objectives are essential and necessary. considering various equipment, algorithms, and their applications at different levels of irrigation networks, the performance of automatic systems is a function of the performan...