Since density is considered as one of the most important numerical indices to explain quantitative values of a plant community by affecting on many aspects and activity of ecosystem, on the other hand, awareness about plants distribution pattern in environment is an essential preparation for measurement and study of vegetative cover, therefore, in this research determination of density and dist...

Abstract Modeling large energy systems requires different forms of simplifications and aggregations. This is especially true for hydropower systems. One way to simplify the modeling as a part scale utilize so-called Equivalent models. The model simplified area with only one (or few stations) which aims mimic behavior an Original more detailed containing all stations in specific area. However, d...