firm size and its impact on the firm performance examined in all of economics historical periods from different point of view. meanwhile, productivity is one the most important performance index for each firm, therefore so many studies tries to survey firm size impact on it. in iran also, economics literature replete with productivity studies but the impact of size on it rarely seen between the...

introduction: ovako working posture analyzing system (owas) is a method for evaluating postural load during work. the owas method is based on a simple and systematic classification of work postures combined with observations of work tasks. the aim of this study was the assessment of various postures during the work in iron and steel industry, navard ahwas, using owas method. materials and metho...

following the 1994 northridge and 1995 kobe earthquakes, most of modern structures damaged seriously or devastated totally despite the seismic codes of these countries that had been expected to bear advanced criteria for seismic design of structures. after extensive research, the most probable reason of those destructions was attributed to special specifications of near-field earthquakes. in th...

the concept of countervailing power is a term to describe the situation in which the market power of one side (sellers) may be balanced by the market power of another side(buyers) in a given market. the purpose of this paper is to test this hypothesis and to determine whether the market power of sellers has had a restraining influence on increases in buyer market power in iran’s large industrie...

Development economists argue that trade protection reduces industrial sector efficiency, mainly through the distortion in relative prices, increased market power, x-inefficiency and inefficient scales of production. Nevertheless there is no convincing evidence on the link between trade reforms and improvement in economic performance. This work examines the case of Uruguay, an economy that intro...

in this paper the partial and total factors productivities of isfahan province industries are analyzed. the two digit isic yearly data is used for period 1972-1993 . the results shoe that the average partial labor productivity are 6/8 and 2/2 mil. rials which are corresponded to chemical and wood industries, respectively. the average labor productivity of all industries is roughly constant befo...