experience of double revolutionary upheavals in russia during the 20th century which produced a new socio-economic regularity on one hand and changed the political system from monarchial to democratic republic and then soviet state and finally presidential republic at the end of 20th century on the other hand are treated as democratic movements. in this regard, crumbling of ex-soviet regime and...

abstract the increasing of yield per unit area is usually achievable by improving the soil fertility level through using (chemical) fertilizers. the purpose of the present research was to evaluate the 6 extraction methods including olsen, morgan, ammonium bicarbonate-dtpa, colwel, bray and mehlich 3 in order to specify a suitable extractant(s) for estimating available phosphorus through using 2...

an analysis on terrorism: meaning, history, and approach on the balance, it be con said that terrorism, as a political phenomenon and a determining factor in political, social, and economic developments, has replaced the political phenomena which alread was common such as revolutions, riots, rebellions, and conflicts (total wars between two political entities or more characterised as certain id...

the input-oriented data envelopment analysis was used to measure the water use efficiency and productivity indices of tehran over the period 2005-13. meanwhile, the correlation between water uses and regional economic activities was examined using the gross regional domestic product index. the results indicated that the total productivity was improved 1.8% and 1.68% aspect of technical efficien...

petroleum and its subjected economic structurs play a significant role in iran's political social and economic develovement. iranian economy highly depends on oil exports and incomes. oil industry provides almost 50% of national budjet and 80 percent of exportation resources. oil's incomes have fluctuated during different decades and experienced the most increasing trend in (2007-2011...