Assist. Prof. Dr. Ahmet Erdem Tozoğlu from the Department of Architecture, was assigned in order to present his accepted paper entitled "The Invention and Celebrating of National Holidays in the Process of Building a Nation State: Spatial Manifestations of Ceremonial Legitimacy in Istanbul and Ankara" at the international conference to be organized by the Society of Architectural Historians (SAH) in Pittsburg, United States on condition that travel, accomodation and transportation expenses covered by TUBITAK 3501 Project Budget referring 39 of the Higher Education Law No. 2547.