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Volume 15 (2010)
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Advertising, concentration and profitability in Iran Industries: Seemingly Unrelated Regression Approach

Firooz Falahi; Majid Feshari; Siab Mamipour

Volume 15, Issue 45 , February 2011, , Pages 49-75

Abstract
  This paper focuses on the relationship among structure, conduct, and performance (SCP) for a sample of 141 four-digit industries during 1999-2005 in Iran. For this purpose seemingly unrelated regression estimation (SURE) method is used to estimate the parameters of the models for profitability (the ratio ...  Read More

Energy Consumption and Economic Growth: a Nonlinear Approach

Firooz Falahi; jalal montazeri shoorekchali

Volume 15, Issue 44 , October 2010, , Pages 111-133

Abstract
  The annual data on economic growth and energy consumption in Iran during the period 1352-1386 is used to study the effect of energy use on the growth of Iranian economy. To that end, a smooth transition regression model is used. The selected model has two regimes and two thresholds. Regime one starts ...  Read More