At first I apologize for my English .I know that it is terrible, so one of my goals for writing here, is improving my English. I hope not many people reading here because if somebody reads this blog I am sure that he /she laugh for my writing. I think it is better first I introduce myself : A person who is studing M.Sc. in the field of mining engineering and tries to finish his final project till Febrary and who wants to make a better life for himself in the future somewhere else !