Development of new technologies and combined with creativity and innovation, plays the fundamental role in developing of any community′s value. Thus, in this research the design and production of hydroforming device was introduced. One of the best and most efficient technologies in the world of metal forming is wind turbine blade producing with hydroforming method which seems as an innovative m...

The process of ductile fracture which occurs due to the accumulation, growth and combination of defects or cracks of material is called ductile damage. Failure in materials can be predicted, using damage mechanics and damage criteria. On the other hand, most of the materials depended to the manufacturing process, are formed in warm or hot conditions so that; the temperature also affects on the ...

According to a universal consensus and agreement, all diagnostic, curative and rehabilitative medical intervention and biomedical research on patients as human participants, including those related to breast disease and breast cancer, must be performed in a morally acceptable manner. In other words, a medical decision would be “right” if it is ethically justifiable. Similar to diagn...

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the book titled “bases of politics” is the original text for students of bachelor of political sciences which is taught in a three-unit course. this compilation has been introduced as the best reference for bases of politics course and master of science exam. we first introduce this text and assert its assumptions and then evaluate and criticize in contain and formal manner and finally after pr...

markowitz, in his portfolio selection theory, stated that investors select their portfolios according to two criteria of risk and return. accordingly, he presented his mathematical model. one of the criticisms of this model is that while investors, practically, consider different criteria in forming their portfolios, it only considers the return mean and return standard deviation. liquidity is ...

Using 2D nonlinear simulations, we study the generation and nonlinear evolution of spiral structure in a star-forming multi-component gravitating disk. We confirm in agreement with previous studies the destabilizing role of a cold gaseous component and extend this conclusion for multi-component star-forming disks exchanging mass and momentum between its components. We show that the spiral struc...