[1] East China Normal Univ, Sch Geog Sci, Shanghai 209962, Peoples R China
[2] Cairo Univ, Fac Agr, Dept Agr Engn, Giza 12613, Egypt
[3] Int Ctr Agr Res Dry Areas ICARDA, Maadi, Egypt
[4] Minia Univ, Fac Engn, Civil Engn Dept, Al Minya 61111, Egypt
[5] Univ Pecs, Fac Engn & Informat Technol, Struct Diagnost & Anal Res Grp, Boszorkany Ut 2, H-7624 Pecs, Hungary