The GEO-HF project

GEO600 and the GEO-HF upgrade program: successes and challenges

The German-British laser-interferometric gravitational wave detector GEO600 is in its 14th year of operation since its first lock in 2001. After GEO600 participated in science runs with other first-generation detectors, a program known as GEO-HF began in 2009. The goal was to improve the detector sensitivity at high frequencies, around 1 kHz and above, with technologically advanced yet minimall...

Computed tomographic coronary angiography for patients with heart failure (CTA-HF): a randomized controlled trial (IMAGE HF Project 1-C)

BACKGROUND The prevalence of heart failure (HF) is rising in industrialized and developing countries. Though invasive coronary angiography (ICA) remains the gold standard for anatomical assessment of coronary artery disease in HF patients, alternatives are being sought. Computed tomographic coronary angiography (CTA) has emerged as an accurate non-invasive diagnostic tool for coronary artery di...

The Protection of Cultural Heritage Sites from Geo-Hazards: The PROTHEGO Project

High-Performance Ocean Color Monte Carlo Simulation in the Geo-info Project

This paper presents the development of Ocean Color Monte Carlo simulation by means of high-performance computing techniques in the context of the Geo-Info project. The paper first outlines the Geo-Info project whose primary aim is to provide domain experts (e.g., oceanographers and geologists) with a set of software toolkits specifically designed for classes of problems in selected target appli...

Hf Xl: Adaptive Wideband Hf Transmissions

This paper presents a solution to increase the throughput of an HF (High Frequency) physical (PHY) layer in particular to allow for services such as IP over HF. Additionally, this new PHY layer can improve the adaptability of the waveform to the channel variations, in particular to limit the retransmissions due to errors. Taking into consideration the existing HF spectrum occupancy and its high...