Islam H. Afefy Industrial Engineering Department, Faculty of Engineering, Fayoum University, Al Fayyum, Egypt E-mail: Islamhelaly@yahoo.com Received September 15, 2010; revised September 27, 2010; accepted October 19, 2010
Islam H. AfefyIndustrial Engineering Department, Faculty of Engineering, Fayoum University, Al Fayyum, EgyptE-mail: Islamhelaly@yahoo.comReceived September 15, 2010; revised September 27, 2010; accepted October 19, 2010
Islam H. Afefy Industrial Engineering Department, Faculty of Engineering, University Fayoum, Al Fayyum, Egypt E-mail: Islamhelaly@yahoo.com Received September 15, two thousand and ten; revised September 27, 2010; accepted October 19, 2010
Islam H. Afefy.Industrial Engineering Department Faculty of, Engineering Fayoum University, Al Fayyum Egypt,,,E-mail: Islamhelaly@yahoo.com.Received, September 15 2010; revised, September 27 2010; accepted, October 19 2010.