Let X1, · · · , Xn and Y1, · · · , Yn be independent heterogeneous geometric random variables with parameters p1 ≤ · · · ≤ pn and q1 ≤ · · · ≤ qn, respectively. We prove that ∑k i=1Xi is larger than ∑k i=1 Yi, for k = 1, · · · , n, in mean residual life order if, and only if, the harmonic mean of p1, · · · , pk is smaller than the harmonic mean of q1, · · · , qk, for k = 1, · · · , n. In this w...

â â â  â  â  abstract â  this paper aims to identify key challenges facing iran and south korea in their bilateral trade and investment relations. in particular, it is concerned with the policy implications which can be useful for policy makers and business people of both countries. for this purpose, we review and analyze the recent developments of the iranian economy and bilateral trade and in...

the main purpose of this paper is theoretically to design the optimal intervention in the foreign exchange market in iran, which has not been investigated by previous studies. the economic fundamentals are strongly affected by the optimal foreign exchange intervention, the consistency of foreign exchange intervention with other policies and political authorities' beliefs about the interven...

 Up to now, the impact of real exchange rate on the non-oil exports of Iran has been mainly on focus. However, the more important aspect of the fluctuations in exchange rate is its degree of volatility which can have profound effect on the non-oil exports. Hence, the main objective of this paper is to investigate the linkage between non-oil exports and the real exchange rate volatility for Iran...

the aim this research is the diagnosis of production chains in oil’s regions of iran. for this reason, by using, input-output table for oil’s regions of iran,linkages and production chains are identified. the results of research indicate that although oil and natural gas sectors contain 50 percent of region’s output, but it is not a leading sector. in contrast, manufacturing of species of machi...

the paper examines for the first time the foreign exchange intervention policy in foreign exchange market of iran. and in this framework, the study designs and simulates the foreign exchange intervention model in iran. in the first section, the paper shows that the injection of oil revenues directly to economy and also the absence of potent structure of output are inclusively caused the central...

there are different studies in urban literature on the determinants of urban growth, from the theoretical and empirical points of view. the most completed theoretical model is henderson model (1988, 1997, and 1999), which is tested by some empirical studies. as henderson model shows, the set of national product, specialization and technological progress are the determinants of urban growth. usi...

â â â  â â â â â  abstract: â  up to now, the impact of real exchange rate on the non-oil exports of iran has been mainly on focus. however, the more important aspect of the fluctuations in exchange rate is its degree of volatility which can have profound effect on the non-oil exports. hence, the main objective of this paper is to investigate the linkage between non-oil exports and the real exc...