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Galileo creation and cosmology : a study on the interplay between Galileo’s science of motion and the creation theme Ghent University
Galileo and Huygens on Free Fall: Mathematical and Methodological Differences Vrije Universiteit Brussel
In this essay, I will scrutinize the differences between Galileo's and Huygens's demonstrations of free fall, which can be found respectively in the Discorsi and the Horologium, from a mathematical, representational and methodological perspective. I argue that more can be learnt from such an analysis than the thesis that Huygens re-styled Galilean mechanics which is a communis opinio. I shall argue that the differences in their approach on free ...
Two-year clinical outcomes after successful transcatheter aortic valve implantation with balloon-expandable versus self-expanding valves: A subanalysis of the GALILEO trial Hasselt University
Background Midterm data comparing clinical outcomes after successful implantation of self-expanding and balloon-expandable transcatheter heart valves (THV) are limited. We aimed to compare 2-year outcomes after successful transcatheter aortic valve implantation (TAVI) with the Edwards balloon-expandable or the Medtronic self-expanding THV. Methods Two-year outcomes were analyzed according to the implanted THV in the GALILEO trial. Major adverse ...
Design Drivers, Solutions and Robustness Assessment of Navigation Message Authentication for the Galileo Open Service KU Leuven
As part of its duties concerning Galileo Services & Exploitation, the European Commission is studying services to be offered by Galileo to the GNSS community in the next few years. A service that could be provided without modifying the payload of the current Galileo satellites is the authentication of the navigation information. The Galileo data authentication service would contribute to improving worldwide GNSS security and make Galileo ...
Calibration of Galileo Signals for Time Metrology KU Leuven
Using global navigation satellite system (GNSS) signals for accurate timing and time transfer requires the knowledge of all electric delays of the signals inside the receiving system. GNSS stations dedicated to timing or time transfer are classically calibrated only for Global Positioning System (GPS) signals. This paper proposes a procedure to determine the hardware delays of a GNSS receiving station for Galileo signals, once the delays of the ...
A Navigation Message Authentication Proposal for the Galileo Open Service KU Leuven
Copyright © 2016 Institute of Navigation. GNSS vulnerabilities have become evident in the last decade. Authentication of the GNSS signals and data can be an important building block contributing to mitigating these vulnerabilities. This paper presents a Navigation Message Authentication (NMA) scheme based on the Timed Efficient Stream Loss-tolerant Authentication (TESLA) protocol and a novel concept based on a single one-way chain for all ...
Towards an EU industrial policy for the space sector – Lessons from Galileo KU Leuven
The rise of the EU as an actor in the European and world space theatres, in its various roles as initiator, owner and operator of large-scale programmes such as Galileo and GMES, has raised a number of questions with regard to industrial policy. Based on the experiences from the Galileo programme's procurement round in the Full Operational Capability (FOC) phase and on the present discussions on space industrial policy within the EU, this paper ...
Galileo Open Service Authentication: A Complete Service Design and Provision Analysis KU Leuven
GNSS authentication, and in particular Navigation Message Authentication (NMA), has been already studied in the scientific literature. However, not many references that analyse the assets at risk, existing threats, mitigation actions, and residual risks through standard risk assessment processes, are available. In this paper, we outline how to use such processes to justify the design and selection of some configurable options for the service ...