Speeding up proton therapy optimization algorithms using GPU-acceleration

Proton irradiation therapy is a powerful form of cancer treatment, promising better dose conformity as compared to conventional radiotherapy. Due to the complex scattering properties of protons, the optimization process that is needed to accurately target the cancer cells whilst causing minimal damage to<br/>the surrounding healthy tissue and...

Eolisch sediment transport

In dit verslag is een eolisch sedimenttransport model geformuleerd en het model van De Vries geïmplementeerd en geanalyseerd. Na de afleiding van de eendimensionale advectie-diffusievergelijking vanuit de driedimensionale continuïteitsvergelijking is eerst het model van De Vries zonder diffusie onderzocht. In het model kan er onderscheid gemaakt...

Comparative Analysis of LSTM, ARIMA, and Facebook’s Prophet for Traffic Forecasting: Advancements, Challenges, and Limitations

Accurate short-term traffic forecasting plays a crucial role in Intelligent Transportation Systems for effective traffic management and planning. In this study, the performances of three popular forecasting models are explored: Long Short-Term Memory (LSTM), Autoregressive Integrated Moving Average (ARIMA), and Facebook's Prophet, for short-term...

Temperature dependence of a phytoplankton population in a 2D model of a coastal area

Due to climate change, the sea temperature is rising. This temperature change has an effect on the phytoplankton population. Phytoplankton is responsible for more than 50 percent of the oxygen production on earth, and is therefore crucial for life on earth. In this report, the research question is: is the temperature increase of the water...

Optimizing driving entity switching of semi-automated vehicles under automation degradation

Transitioning to use automated vehicles is a gradual process. Until full automation capabilities are developed there is a need to mediate which driving entity - human or autonomous driving system (ADS) - should be in control depending on the circumstances. This research aims at investigating the switching between manual and automated driving in...

Public Transport during coronavirus outbreak: A research of measures taken in Dutch and international PT

In 2019 a virus surfaced in China that would later cause a pandemic: the coronavirus. Across the world measures were taken to reduce the spread of the virus. Public Transport (PT) had a unique position, being both an essential service and a place where the virus can easily be spread. This research investigates the measures taken in PT in the...

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 role of dockless shared-bikes in Delft: From a user perspective

This thesis provides an insight into the role of dockless shared-bikes (Mobike) in Delft. The objective of is to fill the knowledge gap about the users of shared-bicycles and their motivations to use shared-bikes in Delft. A survey is and finally gained 91 useful results. 76% of respondents are students, and in general, people are highly...

A Study of Chiral Induced Spin Selectivity by means of a Computer Simulation

In this research, the effect of Chiral Induced Spin Selectivity is studied by means of a transport calculation on a model of a chiral molecule between two gold contacts. The method consists of two main parts: optimizing the geometry of the entire system, being the molecule and the contacts, and performing the transport calculation on the system,...

On the Use of a Dual Mean Field Approach for DFT+NEGF Electronic Transport Modelling

This thesis focuses on electronic transport modelling in molecular junctions. The most common technique for modelling electron transport is the combination of Density Functional Theory (DFT) and Non-Equilibrium Green's Function's (NEGF). Conventional DFT+NEGF methods are, however, invalid for correctly modelling junctions under a bias voltage. ...

Towards the Visualization of the Turbulence Cascade

A turbulent flow is composed of swirling eddies of many sizes. Energy, which is added to the flow at the larger scales, is transferred down through consecutively smaller eddies until the scale is small enough that viscous forces dominate, at which point the energy is dissipated. The mechanism by which energy is transferred down the scales of...

Particle models for sand transport in water: analysis and simulations

This thesis describes how the simple random walk particle model can be extended to account for sand deposition and suspension, and for particle interaction: clumping together and falling apart. The extended models are analyzed, and the corresponding partial differential equations are derived. These equations are compared to the currently used...

Automatisch & geïnformeerd: Een onderzoek naar het effect van autonoom vervoer op de Nederlandse infrastructuur

The self-driving vehicle technology can be a potential game changer. The image of traffic and transport we know nowadays can change rapidly over the next twenty years with the introduction of autonomous driving. Still, there seem to be some uncertainties with the development of autonomous driving. Apart from the fact that this technology is...

A Real-Time Adaptive Sampling Algorithm and its Application in Quantum Transport Measurements

In this research a novel generic local adaptive measurement procedure for low noise single and sequential 1-dimensional line scans is developed. This procedure is applied a variety of phenomena including resonance excitations in superconducting resonators and DC transport measurements in proximitized semiconducting nanowires. The adaptive...

Analysis of transportation possibilities from a satellite mine to the Aitik processing site

The Aitik mine is the largest copper mine in Sweden. In the surrounding area several minor deposits have been found. If these deposits will be mined the ore can be handled in the concentrator of the Aitik mine, which means that the ore has to be transported to the Aitik mine. Transportation options of one of these satellite mines, 15 km away...

Input for a 1D sand-gravel morphodynamic computation including a bedload layer

In the mass balance of a riverbed, some terms are usually assumed constant for reasons of simplicity. One of the terms assumed to be constant is the change in bedload layer, which is defined as the sediment transport divided by the particle velocity. To study the effect of this assumption, a numerical morphodynamic model has to be computed. For...