1. Assistant Professor, Dept. of Geological Engineering, Canakkale Onsekiz Mart Univ., Terzioglu Campus, Canakkale 17020, Turkey.
2. Associate Professor, Dept. of Chemical Engineering, Univ. of Vigo, Rua Maxwell s/n. Edif. Fundicion, 36310 Vigo, Spain.
3. Professor, Dept. of Civil and Materials Engineering, Univ. of Illinois at Chicago, 842 West Taylor St., Chicago, IL 60607.