Praise be to Allah, by whose grace good deeds are accomplished. Thanks to God, the master’s thesis of the researcher/ Heba Ramadan Mahmoud Ali was discussed and accepted.

The supervisory committee consisted of:

• Prof. Dr. Wafa Ismail Sharif, Prof.
• Assistant. Prof. Dr. Hanan Muhammad Badran, and
• Prof. Dr. Maha Ibrahim Al-Zafarani.

The judging and discussion committee is from

• Prof. Dr. Wafa Ismail Sharif (on behalf of the supervisors),
• Prof. Dr. Amira Ahmed Hassanein (internal examiner),
• Prof. Dr. Marwa Mustafa Ragheb (external examiner), and
• Prof. Hanan Muhammad Badran (on behalf of the supervisors).

The thesis was accepted. With appreciation of excellence, many thanks to our distinguished professors.