The back-end tools of a data warehouse are pieces of software responsible for the extraction of data from several sources, their cleansing, customization, and insertion into a data warehouse. They are known under the general term extraction, transformation and loading (ETL) tools. In all the phases of an ETL process (extraction and exportation, transformation and cleaning, and loading), individ...

Gamma Ray Bursts (GRBs) are believed to be the most powerful explosions that have occurred in the Universe since the Big Bang and are a mystery to the scientific community. “Swift”, a NASA mission that includes international participation, was designed and built in preparation for a 2003 launch to help to determine the origin of Gamma Ray Bursts. Locating the position in the sky where a burst o...

The MINIX 3 operating system is designed to restart misbehaving or crashed drivers, but currently cannot protect the user’s file-system data. Because the blockdevice stack lacks end-to-end integrity, it is impossible to tell whether data corruption occurred—and, even if we could, there is no means to recover the data lost. Therefore, we have extended MINIX 3’s failureresilience mechanisms with ...