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During the last two decades, hub location problems have become popular with successful applications in transportation, telecommunication, networks, retailing and other logistic systems. In this paper we consider Turkey΄s land borders security. Because security is the one of the most important deal nowadays, countries are spending so much to prevent threats that may come from neighbor countries΄ borders. Also several geographical restrictions at our land borders cause insufficiency to monitor and to take the requiring data. We focus on the problem of the single allocation p-hub median that is addressed to monitor the movement at Turkey΄s land borders by using unmanned aircraft. In addition, aiming assignment of demand points that are defined as cities at land borders to hubs mathematical model is built and the results are evaluated. Model is encoded by using GAMS software and solved by CPLEX solver. [ABSTRACT FROM AUTHOR]

The United States Air Force Academy is actively involved in unmanned aircraft research across numerous departments involving many projects, aircraft, government agencies, and experimental programs. The importance of these research projects to the Academy, the faculty, the cadets, the Air Force, and to the defense of the nation cannot be understated. In an effort to be proactive in cooperating with recent concerns from the FAA about the growth and proliferation of UAS flights, the Air Force has implemented several new guidelines and requirements. Complying with these guidelines, directives, and regulations has been challenging to the researchers and research activities conducted at USAFA. Finding ways to incorporate these new guidelines effectively and efficiently is critical to research and participation in joint projects and exercises. This paper explores the nature of research at USAFA current restrictions imposed by the various regulations, the current process, short term solutions, and a long term vision for research into UAS at the Academy. [ABSTRACT FROM AUTHOR]