1. Assistant Professor, Faculty of Engineering, Cairo Univ., Cairo 12613, Egypt (corresponding author). ORCID: . Emaill:
2. Research Professor, Dept. of Mechanical and Civil Engineering, California Institute of Technology, Pasadena, CA 91126. ORCID:
3. Professor, Viterbi School of Engineering, Univ. of Southern California, Los Angeles, CA 90089-2531.