Hailu Worku Obsse is an Ethiopian writer, researcher and software developer who is currently pursuing his PhD in Optimization Engineering at Ecriyes University in Turkey. He has au...view moreHailu Worku Obsse is an Ethiopian writer, researcher and software developer who is currently pursuing his PhD in Optimization Engineering at Ecriyes University in Turkey. He has authored more than 12 books, published many research articles and contributed much to the development of literatureview less