PhD ceremony: Mr. J. Mwebaze, 16.15 uur, Academiegebouw, Broerstraat 5, Groningen
Dissertation: Extreme data lineage in ad-hoc astronomical data processing
Promotor(s): prof. E.A. Valentijn
Faculty: Mathematics and Natural Sciences
This research addresses the problems encountered in tracing and using lineage of data, pixels and code with ad hoc astronomical data processing. We describe a data model for ad hoc-based data processing and provide methods for tracing, querying and viewing its lineage. We show that data, pixel and code lineage can be used to facilitate efficient processing through incremental re-computation, as well as semi-automatic modification of processing steps, and sub-image processing.
We describe an implementation of these techniques in an all-in-one system, Astro-WISE, that allows a scientist to archive raw data, calibrate data, perform post-calibration scientific analysis and archive all results in one environment. Astro-WISE combines the use of data, pixel and code lineage to support multiple surveys with a novel way to process wide-field astronomical data in a distributed environment.
We present an example to demonstrate Astro-WISE's efficiency in searching for rare astronomical objects: we discover several of the most distant quasars in the Universe.
Inspired by the importance of the European Wadden Sea for migratory birds, last week China successfully nominated parts of its own Wadden Sea - in the Yellow Sea - for the Unesco World Heritage Status. This means that the list of protected areas is...
The University of Groningen (UG) and Wageningen University & Research (WUR) have decided to work together more closely in the area of nature-inclusive and circular agriculture, and the rural development associated with this, in the Northern Netherlands...
Thirteen researchers from the University of Groningen (UG) and the UMCG have been awarded Veni grants within the framework of NWO’s Innovational Research Incentives Scheme.
A terrific result building on last year's successes, where 12 Groningen researchers...