On the Time Scale of Salinity Adjustments in a Well-Mixed River-Sea System

The salinity profile in a coastal sea-river system is the result of balancing of salt transport due to mixing of the water by tides and the freshwater discharge from the river. When for example during times of drought freshwater discharge suddenly declines, the salinity in the river may increase significantly and threaten drinking water supplies...

Ultrafilters en Ultramachten

In deze scriptie gaan we twee wiskundige objecten onderzoeken, het ultrafilter en de ultramacht. Zodra je in de wiskunde een nieuw object hebt bedacht zijn de eerste twee vragen die je stelt altijd 1) bestaat het? en 2) Als het bestaat, is het dan uniek, of zijn er meerdere? Nou is dat voor een ultrafilter relatief makkelijk te beantwoorden. In...

Epileptic seizure detection using near-ear EEG

60 million people around the world have epilepsy, which is a neurological disorder that severely impacts their day to day life negatively. Currently available methods to reduce the effects of epilepsy are either ineffective or require expensive and invasive surgery. A new method has been found that can suppress epilepsy without the need of...

Reflection Positivity in Heisenberg and Ice-Type Models

This thesis gives a thorough description of the mathematical tool called reflection positivity, which can be used to prove the occurrence of phase transitions in physical models. A major result, although already known, is a theorem that gives tractable conditions on the Hamiltonian such that the Boltzmann functional is reflection positive. In...

An FM Chirp Waveform Generator and Detector for Radar: Modulator and Mixer Subsystems

This thesis presents two submodules which are part of 'an FM Chirp Waveform Generator and Detector for Radar', namely the mixer and the modulator. The goal of this project is to design and simulate these submodules from an educational perspective. The modulator is implemented as a single-ended common-base Colpitts oscillator with modulation...

Geological Research using Electronic Markers: Design of a signal processing system for chipless RFID

In this thesis, the implementation of a passive, chipless, frequency coded RFID detection system for bedload transport studies is proposed. The proposed tag will be deployed in the semi-arid Río Colorado, Bolivia with the aim to develop quantitative sediment transport models that relate transport to grain size. Different algorithms are explored...

Electronic markers for geological research: Tag Design

In this thesis, the implementation of a passive, chipless, frequency coded Radio-Frequency Identification (RFID) tag for bedload transport studies is proposed. The proposed tag will be deployed in the semi-arid Río Colorado river, Bolivia with the aim to develop quantitative sediment transport models that relate transport to grain size. The...

The Eagle

SeaState5 wants to facilitate the monitoring process for seabed cables of offshore wind farms. The company wants to achieve this by creating an unmanned vessel, named the Eagle, which can be analyzed from a remote location.<br/><br/>As students from TU Delft, we have been tasked to create a software framework that allows the Eagle to go to a...

Amplifier Design in a Motional Feedback System

The quality of audio amplifiers used in Hi-Fi sound installations is largely determined by the distortion of the output signal. This report proposes a method of improving the distortion reduction in audio amplifiers by using a topology with active feedback. The characteristics of the standard non-inverting amplifier are extended to this new...

Sensorsysteem voor SubDowser: Een betaalbaar sensorsysteem voor het monitoren van waterkwaliteit en -kwantiteit in Afrikaanse waterputten

Deze thesis beschrijft de ontwerpkeuzes, het ontwerp en het begin van de implementatie van een sensorsysteem dat voor e12,50 aan componenten de waterdiepte, temperatuur en conductiviteit meet in waterputten. Aan de hand van de temperatuur en de conductiviteit kan de zoutconcentratie benaderd worden. Er is gekozen voor een combinatie van nieuwe...

Positiebepaling van zwemmers: Onderzoek, ontwerp en realisatie van een positiebepalingssysteem

Deze thesis presenteert het ontwerp van een systeem dat de positie van zwemmers in water bepaalt. Het idee voor dit systeem is ontstaan binnen de vakgroep Wireless and Mobile Communications (WMC), onderdeel van de TU Delft. WMC ontwikkelde in 2007 een testopstelling voor driedimensionale positiebepaling die gebruik maakte van akoestische golven....