A new bookkeeping system called Jiskefet is being developed for A Large Ion Collider Experiment (ALICE) during Long Shutdown 2, to be in production until the end of LHC Run 4 (2029). Jiskefet unifies two function- alities: a) gathering, storing and presenting metadata associated with the oper- ations …

Autonomous driving in public roads requires precise localization within the range of few centimeters. Even the best localization systems based on GNSS cannot always reach this level of precision, especially in an urban environment, where the signal is disturbed by surrounding buildings and artifacts. …

Autonomous driving in public roads requires precise localization within the range of few centimeters. Even the best current precise localization system based on the Global Navigation Satellite System (GNSS) can not always reach this level of precision, especially in an urban environment, where the signal …

Only nine percent of rolling element bearings operate long enough to achieve their design life. The leading cause of failure, by 43 percent, is improper lubrication. This includes over lubrication or a lack of lubrication. This will lead to unexpected failure of the bearings, which could result in a …

Het Mauritshuis doet momenteel onderzoek naar de pigmenten en laagopbouw in verfmonsters uit kunst van Jan Steen en Giovanni Antonio Pellegrini. Hierbij wordt met Shell Nederland BV samengewerkt onder het Partners in Science project. Een onderdeel van dit project is een onderzoek naar het blauwe pigment …

In pre-treatment dose verification, low resolution detector systems are unable to identify shifts of individual leafs of high resolution multi leaf collimator (MLC) systems from detected changes in the dose deposition. The goal of this study was to introduce an alternative approach (the shutter technique) …

The objective of this study was to introduce a new iterative method to reconstruct multi leaf collimator (MLC) positions based on low resolution ionization detector array measurements and to evaluate its error detection performance. The iterative reconstruction method consists of a fluence model, a detector …

When treating cancer by radiation therapy it is always the goal to irradiate the tumour as much as possible and to spare the healthy tissue around it. For this a new type of radiation therapy called Volumetric Modulated ARC Therapy (VMAT) has been developed. During VMAT treatment the radiation machine …

PRRT is a method of treatment that is used for a variety of diseases. In this method of treatment patient are infused with a radiopharmaceutical. This radiopharmaceutical will deliver a radiation dose to the specific targeted organ. However, due to infusion in the bloodstream other organs will also sustain …

The COMPASS system (IBADosimetry) is a quality assurance (QA) tool which reconstructs 3D doses inside a phantom or a patient CT. The dose is predicted according to the RT plan with a correction derived from 2D measurements of a matrix detector. This correction method is necessary since a direct reconstruction …