one of the most important dimention of the industrial structure is the concentration. in order to determine concentration in iranian industries from 2000 to 2005, the 5-firm concentration ratio is used in terms of sale value, production, value added and employment variables. the results indicate high correlation among concentration ratios in terms of sale, employment, value added and production...

Bloodplatelets are small, anucleate cellular fragments that play an essential role in hemostasis. During normal circulation, platelets circulate in a resting state as small discs (Fig. 1.1A). However, when challenged by vascular injury, platelets are rapidly activated and aggregate with each other to form a plug on the vessel wall that prevents vascular leakage. Each day, 100 billion plateletsm...

In Austrian theory, the business cycle is caused by expansive monetary policy, which artificially lowers the interest rate below equilibrium rates, necessarily lengthening the structure of production. Can tax alterations also cause an Ausman business cycle? Only if they affect time preference rates, the determinant of the shape of the Hayekian triangle. It is the contention of th is paper that ...

The Dubna-Mainz-Taipei dynamical model for pion electromagnetic production, which can describe well the existing data from threshold up to 1 GeV photon lab energy, is presented and used to analyze the recent precision data in the ∆ region. We find that, within our model, the bare ∆ is almost spherical while the physical ∆ is oblate. The deformation is almost saturated by the pion cloud effects....

this study tries to provide a virtual image of the structure and design of facenama, cloob, facebook and google+ social networks. the main question in this study is which variable or variables are differ in the structure and design of social networks of iranian and non-iranian. content analysis has been used in this study. content analysis is a research method to describe the objective, systema...