qorveh – dehgolan aquifer is one of the ground water resources in kurdistan. increase in pumping of water has dropped water table level significantly. this study considers the relationship of fluctuations in precipitation, humidity and evaporation with ground water table level. after preparing the base map and the rainfall data accuracy, isohyetal map of basin was drown. based on isohyetal ma...

The research aimed to analyzing the proportion of daily abundance phytoplankton based on change in time best incubation period. implementation from November 2018 January 2019 marine waters Barrang Lompo Island. Water samples identify were taken by filtering 100 liters seawater using a plankton net. sampling was carried out at observation 10:00; 11.00; 12.00; 13.00; 14.00 period (10.00-14.00). B...

The main purpose of this paper is to determine the best performance time period of a system, consisting some DMUs, among some sequential time periods. This aim is satised by two proposed algorithms, the rst based on global Malmquist Productivity Index and the second is based on PPS frontiers.