this paper intends to study attraction theory which it has been published in a book entitled new method of music performance principles. it should note that mentioned book has been selected as the best book in 21 festival for year book in islamic republic of iran. at first some these drawbacks will be considered regarding to scientific rules then we find that the frequency ratio of sounds in th...

the purpose of this study is presenting a model forecasting financial crisis in tehran stock exchange listed companies. to do this, productive firms that had been accepted in tehran stock exchange between 2002 and 2009, were selected as the study sample. first the independent variables were obtained based on financial ratios and then based on article 141 of the law of commerce, the insolvent an...

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