Computer Science Department has the honor to invite you to attend PhD thesis researcher      Mr.Mohamed Ali Attia (Assistant Lecturer, Department of Computer Science)   Under the title: Novel Multimedia Data Hiding Schemes  Under the supervision of professors : 1 -professor  / Yosef Bassiouni Mahdi Dean of the Faculty of Computer and Information Sciences -Assiut University   2 - d / Abdul Rahman Haider Assistant Professor, Department of Computer Science Faculty of Computer and Information Sciences - Assiut University 3 - d / Khaled Fathi Hussein Lecturer, Department of Computer Science Faculty of Computer and Information Sciences - Assiut University    The jury the message consisting of : 1 - professor / Reem Mohammad Reza Bahgat Dean of the Faculty of Computing and Information - Cairo University 2 - professor / Ahmad Sharaf al-Din Ahmed Emeritus Professor at the Faculty of Computing and Information - Helwan University 3 - professor / Yosef Bassiouny Mahdi Dean of the Faculty of Computer and Information Sciences -Assiut University                                                                                                                               Supervisors with one voice 4 - d / Khaled Fathi Hussein teacher at the Faculty of Computer and Information Sciences -Assiut University And so on Wednesday, 6/3/2013 m at ten am seminars Hall, Department of Computer Science (first floor of the laboratory building) in the Faculty of Computer and Information Sciences.