A program that automatically detects auroral events in all-sky images taken by the all-sky camera of IRF has been written. Current programs that automatically detect the aurora in all-sky images using the RGB color system often miss strong aurora and sometimes interprets clouds as aurora. To improve …

Integrated photonic sensors are promising devices for various sensing applications due to their low cost, small size, and high sensitivities that can be reached. In this thesis, ring resonators and three-port Mach-Zehnder interferometer (MZI) devices fabricated on Silicon-On-Insulator were compared for …

The thermally-sensitive resistors (thermistors) used in VSL’s water calorimeter to detect the radiation-induced temperature change in water are affected by self-heat. The measurement current used to determine their resistance causes their temperature to increase above that of their environment. The self-heat …

Gas-phase diffusion is a widespread process in nature, for example diffusion of pollutants in the atmosphere. A special case of diffusion is the so-called Knudsen diffusion where a gas diffuses in the molecular flow regime. The theory for Knudsen diffusion is well-known therefore, diffusion experiments …

Voor horecabezitters is het van belang om een zo goed mogelijke muziekbeleving meegegeven aan hun klanten zonder de klant hierbij te storen. De twee idealen botsen zo nu en dan. En niet alleen klanten willen ongestoord met elkaar kunnen praten, ook omwonenden willen geen last hebben van de muziek. Voor …

zie scriptie

In this thesis the different aspects of acquiring the complex refractive index of interstellar ice analogues are treated. The ultimate aim of this work is to search for abilities to predict the infrared absorption spectra of these analogues. A key factor in these predictions is the optical influence …

zie scriptie

Voor de oppervlakkige hyperthermiebehandeling is het belangrijk dat de eigenschappen van de applicator worden gereproduceerd. De patiënten krijgen gemiddeld 5 behandelingen met een tussenperiode van één week tussen de behandelingen. Hierbij is het belangrijk dat de applicator op de zelfde positie wordt …

The aim for this thesis is to set up and develop electroplating technique for depositing gold layers. This gold layer will be used as an thermalisation layer in a cryogenically cooled X-ray detector. Key material parameter for the gold layer is a low thermal resistivity at cryogenic temperatures. Since …