Influence of the slope angle on wave overtopping at rubble mound breakwaters

The objective of this research is to gather more information about a possible relation between the slope angle of a rubble mound breakwater and the wave overtopping at this breakwater. The following research question is covered in this thesis: What is the influence of the slope angle of rubble mound breakwaters on wave overtopping? To answer...

Effects of a WPE Dereverberation Algorithm on Speech Perception in Cochlear Implant Users

Introduction<br/>Reverberation causes a reduced speech perception in cochlear implant (CI) users. Therefore, a dereverberation method was proposed based on the weighted prediction error (WPE) algorithm with input from a deep neural network. The speech intelligibility for normal and hearing-aided listeners is improved by cancelling the late...

Prediction of Discharges from Polders to ‘Boezem’ Canals with a Random Forest and an LSTM Model: Improving Inputs of the Decision Support System of the Hoogheemraadschap van Delfland

In this research the possibilities of the application of machine learning models at ‘Hoogheemraadschap van Delfland’ are studied. A random forest (RF) and an LSTM model are used for the prediction of the sum of the discharge in the next 2, 8 and 12 hours from the polders to the boezem canals. This research has showed the potential of machine...

Optimization Algorithms for Plane Selection in Interactive 3D Image Segmentation

Segmentation of 3D medical images is useful for various medical tasks. However, fully automated segmentation lacks the accuracy required for medical purposes while manual segmentation is too time-consuming. Therefore, an active learning method can be used to generate an accurate segmentation using less user input. The active learning pipeline...

Evaluating alternatives for extending the drinking water supply in Uganda: A multidisciplinary project

In many places in Uganda, people do not have a connection to the drinking water supply system and there is a lack of treated water supply, meaning that people only have access to water a certain part of the day. As a result many people rely on springs, handpumps, rivers or lakes, of which the quality cannot be monitored or controlled. <br/><br/...

Form Finding for a Submerged Floating Tunnel: The Clever Cross-section for Coastal Crossings

Although the concept of a submerged floating tunnel (SFT) originates from the early 1900s, the cross-section is always assumed to be circular or rectangular. In this research, it is investigated whether this assumption is valid. In order to find the optimal cross-section, the optimization process is split into two targets. The first targets aims...

Re-africanised: A post-developmentalist approach to infrastructure and public space in Dar es Salaam, Tanzania

Many cities in Africa are confronted with the challenges of a rapidly expanding population, urban geography and the service provision it requires. Also Dar es Salaam, Tanzania’s main economic and cultural city, is with 6 million inhabitants and a project population of 10 million by 2030, classified as one of the fasted growing cities in Africa....

A predictive view on Durbans flood safety: The Golden Mile protected in style

Durban is the third largest city of South-Africa, located in the province of KwaZulu-Natal. The city suffers from severe floods from time to time, finding its cause in both the Indian ocean as well as the Umgeni river. The eThekwini municipality wishes a better insight in the occurrence of these floods and searches for a structural solution to...

Design of an Aberration Correction System for a Deployable Space Telescope

Launch costs for high-resolution space telescopes for Earth observation can be reduced when the telescope mirrors are made deployable. However, such a system is subject to optical aberrations that decreases image quality. To counter these aberrations, an Aberration Correction System (ACS) is proposed that uses a deformable mirror (DM) which is...

Food Island: Creating a Resilient Food System for the AMA

Governments and private and non-profit organisations from international to local levels have acknowledged the idea that more sustainable systems are required to reduce our ecological footprint (WWF, 2016, Jonkhoff, 2012). The food system is a very important aspect within our lives, socially as well as economically but it is also one of the most...