background and objectives: needle stick and sharp injuries (nsis) has remained as a persisting occupational hazard among the healthcare workers. this study aimed to provide updated information on the intensity and potential causes of the problem in iran, by surveying a sample from major hospitals affiliated with tehran university of medical sciences.   methods: of 3312 healthcare workers with t...

Abstract We propose a micro-founded theory of diversified firms. The suggests that firms exist because they allow better deployment factors that, sub-additive contracting costs, are hard to trade in fractions. Firms diversify into industries which these more productive than any alternatives available the factor market. Like markets, specialization by enabling be used on larger scale. individual...

colors influence mood and mental state of human beings and since manis constantly in touch with colors, great important will be attached to thecolors. exercise is also associated with different colors and is performed inan environment full of different colors. also, one of the important factorsaffecting athletes' success is response to the stimulus. considering theimportance of color and r...

since long time ago, mobile metaphor and simile are most important mean for poetic images creation. the present paper studies bayati works according to the important role of the colors in poetic images creation in. we came to conclusion that the poet has used the colors in order to express his feelings, his unsatisfactory as well goals, aims and ideologies. the colors application or secret sema...

regarding to the diversified needs of domestic and global customers and various products of domestic and global competitors, importance of agility in supply chain management becomes more important. suppliers have to provide materials and essential resources of manufacturers in a short time without any lead time.in this research, we identified many criteria for agility in sanitation supply chain...