George Lampropoulos

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The integration of existing cellular systems with new wireless access technologies, such as wireless LANs, has attracted considerable attention during the past few years. The challenges to be addressed include authentication, security, QoS support and mobility management. Efficient mobility management, and especially handover management, is considered as(More)
INTRODUCTION Previous studies have demonstrated an increased frequency and severity of symptoms due to varicose veins during summer. However there is no data on their complications, including superficial venous thrombophlebitis (SVT). The aim of this study was to test the hypothesis that SVT follows a seasonal pattern. MATERIALS AND METHODS During the(More)
The scarce available bandwidth and the unpredictable, variable bit rate traffic in modern packet-switched wireless LANs, require an efficient channel allocation scheme. In this paper we make an overview of traditional call-by-call Dynamic Channel Assignment (DCA) methods and propose a novel DCA method that aims at assigning channels in a more dynamic way,(More)
There is currently a lack of information on presentation patterns and the appropriate investigation and treatment of aortic brucellosis. Herein a case affecting the iliac component of an aorto-iliac aneurysm, managed successfully with in situ graft repair, is reported. A review of the literature identified 25 cases, with the infrarenal abdominal aorta (65%)(More)