Christian Wullems

TL;DR: Recommendations are made for optimal implementation of navigation message authentication for Galileo and next generation GPS systems by making recommendations for cryptographic authentication schemes for navigation data authentication.

TL;DR: An effective method for signal-authentication and spoofing detection for civilian GNSS receivers using the GPS L1 C/A and the Galileo E1-B Safety of Life service is described.

TL;DR: A context-aware authorization architecture that is designed to augment existing network security protocols in an intranet environment and describes the architecture components, the proposed extensions to RBAC that facilitate context- aware access control policy, details of the prototyped implementation, and a number of performance results.

TL;DR: A systematic review of research related to pedestrian behaviour highlighted a number of important scientific gaps in current knowledge, and a new systems-based framework, called Pedestrian Unsafe Level Crossing framework (PULC), was developed.

TL;DR: In this article, the authors discuss major obstacles for the adoption of low-cost level crossing warning devices (LCLCWDs) in Australia and review those trialed in Australia, and conclude that in order to determine if this approach can produce better safety outcomes than the current approach, involving the incremental upgrade of level crossings with conventional interventions, it is necessary to perform rigorous risk assessments and costbenefit analyses of LCLC WDs.