International SLR Service

OWLS - SLR : An OWL - S Service Profile Matchmaker 1

International Geoid Service (iges)

The Auvergne test on quasi-geoid estimation has been set up in co-operation with IGN and EGGP. IGN supplied the gravity, DTM and GPS/levelling data while EGGP contributed in assessing the test procedures. A first comparison between the computations performed by six different groups have been presented during the last Hotine-Marussi Symposium held in Rome (July 5-9, 2009). The results of this te...

A New Online Service for the Validation of Multi-GNSS Orbits Using SLR

In the last decade, we have been witnessing a rapid development of the constellations of Global and Regional Navigation Satellite Systems (GNSS/RNSS). Besides the well-known GPS and GLONASS, newly developed systems such as Galileo, BeiDou, QZSS and NAVIC have become increasingly important. All satellites of new GNSS are equipped with laser retroreflector arrays (LRA) dedicated to Satellite Lase...

Preparing for international medical service.

In many ways, preparation for medical service outside the United States is not greatly different from preparation for a self-guided vacation tour of another country. The major differences are in the rigor that one should apply to being sure all details are set, particularly if one is planning to go to a site away from a capital city. Additionally, the mental preparation is required in terms of ...

Slr Inference : an Inference Systemfor Fixed - Mode Logic Programs , Based on Slr

Deenite-clause grammars (DCGs) generalize context-free grammars in such a way that Prolog can be used as a parser in the presence of context-sensitive information. Prolog's proof procedure, however, is based on back-tracking, which may be a source of ineeciency. Parsers for context-free grammars which use backtracking, for instance, were soon replaced by more eecient methods such as LR parsers....