In this study, the relationship between structure of democracy and dictatorship firms, structure of non-competitive market and abnormal returns is assessed. For this purpose, we evaluate relationship the main criteria of the democracy structure in research literature on Iran's financial market- institution investors- and product market competition with abnormal return. It uses data that extract...

abstract because of the many geopolitical, geo economical and geo strategically potentials and communicational capabilities of eco region, members can expand the convergence and the integration in base of this organization that have important impact on members development and expanding peace in international and regional level. based on quality analyzing of library findings and experts interv...

Studies on benefits from innovations (technical change) have mostly been performed within the framework of competitive markets. These studies indicate that if the market structure under study is not competitive, determination of technical change benefits within a competitive framework may yield distorted or biased results for different groups. Considering the noncompetitive market structure of ...

Studies on benefits from innovations (technical change) have mostly been performed within the framework of competitive markets. These studies indicate that if the market structure under study is not competitive, determination of technical change benefits within a competitive framework may yield distorted or biased results for different groups. Considering the noncompetitive market structure of ...