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Digital image processing is a very useful tool because it allows to highlight and extract image attributes that are undetectable by the naked eye. In this work, an algorithm that is able to identify the corners of a rectangular-shaped figure was developed. The figure have to contrast over a darker background than the figure itself. From this information, the processing system obtains the corresponding...
Quality assurance techniques have been developed to supervise the service quality (QoS) agreed between service-based systems (SBSs) consumers and providers. Such QoS is usually included in service level agreements (SLAs) and thus, SLA monitoring platforms have been developed supporting violation detection. However, just a few of them provide explanation of the violations caused by observed QoS at...
We describe a proactive recommendation approach for repositories of learning objects that adapts to the student profile. It comprises a strategy that lets include diversity in the proposals, and uses navigation-by-proposing, a simple conversational process that avoids posing direct questions and carries very little feedback overhead from the studentspsila perspective.
The Hadronic Tile Calorimeter (TileCal) at the ATLAS experiment is a detector made out of iron as passive medium and plastic scintillating tiles as active medium. The light produced by the particles is converted to electrical signals which are digitized in the front-end electronics and sent to the back-end system. The main element of the back-end electronics are the VME 9U Read-Out Driver (ROD) boards,...
The properties of the impulse discharge in high purity carbon dioxide under variable pressure (200-1,200 torr) were investigated. In the experiments fast lightning impulses (70 ns front) were applied to a point/plane gap. The gap separation was kept fixed at 6.5 cm. It was found that the peak current did not vary much with the pressure but the electric field did so. Another variable that was affected...
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