Vanaf 2019 kunnen thuiswonende burgers vanaf 50 jaar gratis consulten krijgen van een geestelijk verzorger. De overheid veronderstelt een behoefte van ouderen aan ondersteuning bij zingeving, maar of en hoe ouderen deze behoefte aan ondersteuning zelf ervaren is onbekend. Actieonderzoekers van Linking-Zin …

Since the start of the COVID-19 pandemic mental health problems among seafarers became more visible to the world. Seafarers seem to have some unhappy moments while working on board for several months. Especially during this pandemic life on board has been tougher than usual, shore leave is nearly impossible, …

The invasive lionfish (Pterois volitans and Pterois miles) started invading the Caribbean Sea since the 1980’s and were first sighted on the Saba Bank since 2009 where they established themselves fully during the following two years. They have no specific preference for prey species and their predation …

Coastal lagoon ecosystems are transitional waters, that provide important ecological features and deliver valuable services to mankind. However, due to their geographical positioning at the coast line and physical restrictions, coastal lagoon ecosystems are highly vulnerable towards environmental and …

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 …

Met de aanstaande invoering van de aanlandplicht wordt het met ingang van 2016 verboden om in de demersale visserij nog langer vangsten overboord te zetten, hierdoor staat de Nederlandse Voedsel en Waren Autoriteit (NVWA) voor een grote uitdaging wat betreft de naleving en controle van deze maatregel. …

Vissen vormen een belangrijk onderdeel van het aquatisch leefsysteem in de vele wateren binnen het beheergebied van Wetterskip Fryslân. Voor het duurzaam in stand houden van de vispopulaties is het van belang dat de vissen vrij baan hebben om te migreren en hun leefgebieden goed bereikbaar zijn om zo …

To quantify the dosimetric accuracy of the COMPASS correction kernel method, and to determine its ability to detect dose delivery errors caused by MLC leaf mis-positioning.

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 …