خلاصه ماشینی:
JEL Classification: C22, D8 Keywords: Rainfall, Forecasting, seasonal and non seasonal pattern, time series models, Kabodar Ahang ________________________________________________ *PhD Student and Professors of Agricultural Economics, Tehran University Email: aghapoor@ut.
JEL Classification: Q18 Keywords: Iran, price policy, nominal protection rate, implicit protection rate, border prices ________________________________________________ *Professor and PhD Student of Agricultural Economics, Islamic Azad University, Science and Research Branch, Tehran, Iran Email: Mohsenalikhani@gmail.
JEL Classification: D8, D2 Keywords: Output uncertainty, price uncertainty, utility, additive and multiplicative uncertainty, chicken and beef meat ________________________________________________ * Respectively, PhD Student and Professor of Agricultural Economics, Department of Agricultural Economics, Faculty of Agriculture, Shiraz University, Iran Email: roham.
Keywords: Externality costs, groundwater overexploitation, willingness to pay, Mamasani ________________________________________________ * PhD Student and Professor of Agricultural Economics, Shiraz University, Shiraz, Iran Email: mehr_bagheri@yahoo.
JEL Classification: F13, F16 Keywords: Export premium, agricultural export, Augmented Gravity Model ________________________________________________ * Respectively, MSc Student and Associate Professor of Agricultural Economics, Shiraz University Email: esmaeili1968@yahoo.
JEL Classification: Q13, O24, F13 Keywords: Challenge, practical guidance, marketing, Iranian saffron, Delphi Technique ________________________________________________ * PhD Student and Associate Professor of Agricultural Extension, Tarbiat Modares University, Iran Email: saeidfealy@yahoo.
JEL Classification: C100, D200, O140 Keywords: Mechanical technology, poultries, production function, Sabzevar city ________________________________________________ *Assistant Professor of Agricultural Economics, Islamic Azad University, Ghaemshahr, Iran Email: yaserfeiz@yahoo.
JEL Classification: C230, D400 Keywords: Demand function, water, fish product, Kohgilooyeh and Boyerahmad ________________________________________________ * Professor and Graduate Student of Agricultural Economics Respectively, Islamic Azad University, Marvdasht, Iran.