In this paper we propose a conditional logic IBC to represent iterated belief revision. We define an iterated belief revision system by strengthening the postulates proposed by Darwiche and Pearl [3]. First, following the line of Darwiche and Pearl, we modify AGM postulates to make belief revision a function of epistemic states rather than of belief sets. Then we propose a set of postulates for...

drought is a major problematic phenomenon for the mostly semi-arid country of iran. the north centralregions of iran (north of esfahan and ghom province) have suffered from severe droughts several times duringthe last three decades. the frequent occurrence of drought in these regions is due to low and inconsistentprecipitation, abnormally high temperatures, increases in surface albedo and evapo...

Climate plays a key role in ecosystem services. Understanding microclimate change can be significant help making the right decision for ecosystems and buffering effects of global warming. Given large distances between meteorological stations changes climate variables within short distances, such variations cannot detected just by using observed data. This study aimed at determining spatial stru...

one of the characteristics in iranian model of desertification potential assessment (imdpa) is vegetation. sincevegetation is very important factor in the degradation of land, so some indices were determined for this item in order toevaluate desertification potential of arid, semi arid and arid sub humid areas of iran. the indices included vegetationcondition, exploit and revegetation. to calib...

forest canopy rainfall interception loss (i), canopy water storage (s), and the ratio of mean evaporation to mean rainfall intensity () are important components of the water balance in arid and semi-arid climate zones. the goal of this project was to quantify i and s and to evaluate the gash interception model for rainfall interception in a mature semi-arid pinus eldarica medw afforestation pla...

Drought is a major problematic phenomenon for the mostly semi-arid country of Iran. The north centralregions of Iran (north of Esfahan and Ghom province) have suffered from severe droughts several times duringthe last three decades. The frequent occurrence of drought in these regions is due to low and inconsistentprecipitation, abnormally high temperatures, increases in surface albedo and evapo...