University of Applied Sciences St Pölten

HKDF-Based Encryption Method with Very Long Keys for QKD and RKD

Established symmetric encryption schemes rely on short keys, with their length typically ranging between 128 and 256 bits. However, well-known physical key exchange schemes such as QKD (Quantum Key Distribution) and RKD (Radio-signal Key Distribution) generate megabits of new key...

Empirical Evidence on Platform Passenger Distribution and Dwell-Time Impacts in Urban Rail Networks

This study empirically examines the spatial distribution of passengers on urban rail platforms and its impact on boarding and alighting. It combines two complementary datasets from Vienna: (i) automated passenger counts, which record approximately 4.4 million boarding and alighti...

Introduction and validation of OSCAR—optimal stent choice algorithm

Abstract Purpose Standardization and international guidelines for stent size selection are lacking. In this study, we introduce and validate an artificial intelligence (AI)- and image processing-supported, modular software algorithm trained on a multicentric vascular segmentation...