this paper uses the concept of meta-frontier to investigate the relationship between meta technology ratios (mtr) and different varieties in datepalms including; mazafati, rabi and zardan that are produced widely in sistan and baluchestan province of iran. we used a stratified sampling of 300 date farmers of this province in 2010, 2011 and 2012 and estimated a stochastic production frontier usi...

by far, different models for determining the relationship between the flow rate  and amount of precipitation have been developed. many models are based on regression models with limited assumptions. one of the most common methods for estimating  sediment of rivers is sediment rating curve. for better estimation of the amount of sediment based of sediment curve  rating equation, it is possible t...

background malaria is one of tropical and semi-tropical and vector-borne parasitic diseases produced by the protozoan parasites of the genus and species plasmodium. the aim of this study was to assess the epidemiology and the factors associated with the malaria in children in sistan and baluchistan province in 2013-2016. materials and methods this cross-sectional study was conducted between mar...

In recent years, river flow into Sistan dam changed because of construction dams and expansion irrigation areas in the upper Helmand basin. Planning for more heightening Kajaki basin shall intensify severity water shortage Hamun Lake. located at downstream on branch river, power shifts Afghanistan upstream basins absence an integrated authority/management are major problems. Political nature in...