Papers by Mohammad Bakhshi
The main goal of the present research is to study the effect of financial leverage and ownership ... more The main goal of the present research is to study the effect of financial leverage and ownership structure on investment growth opportunities in firms listed in Tehran Stock Exchange. To do so, 95 companies wee selected for the time period between 2006 and 2011 and the least squares' regression was utilized to test the research hypotheses. The criterion of growth opportunities was considered as the dependent variable and the indexes of financial leverage and institutional investors were considered as the independent variables of this research. Two hypotheses were posed regarding the issue. The results of testing the first hypothesis showed that there is a significant negative relationship between financial leverage and growth opportunities in firms listed in Tehran Stock Exchange. This means that the higher amount of the liabilities of a company will lead to lower investment growth opportunities. Also testing the second hypothesis showed that there is not any significant relatio...
The International Journal of Advanced Manufacturing Technology, 2014
In recent years, several research works have been performed on the application of reconfigurable ... more In recent years, several research works have been performed on the application of reconfigurable discrete dies (RDD) for forming sheet metals. Due to the rapid changing of these dies, they attracted the attention of flexible manufacturing systems. Meanwhile, only flat sheet metals were examined, and no research work has been reported on the application of the mentioned dies for tubular parts. In this paper, a new RDD for spinning tubular parts were designed and fabricated. The results obtained in this research illustrated that hollow axisymmetric parts could be produced using this type of die, and that this technique leads to the production of tubular parts with desired accuracy and quality. The strain distribution diagrams of formed samples showed that the length of samples decreases and the wall thickness of them increases after forming. Increase in wall thickness in the middle of the tube is more than the sides and decrease in length in the sides is more than the middle. The twisting deformation increases as the depth of forming area increases. The dimension accuracy of formed samples is acceptable by taking into consideration the likely errors.
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Papers by Mohammad Bakhshi