Using our tools backwards, AF detection by confusing time and frequency

Atrial Fibrillation or AF is the most common heart rhythm anomaly affecting millions of people. This work explores the possibilities of reinterpreting speech processing techniques for use in atrial fibrillation detection. An existing method of modelling single heartbeat, single lead ECG signals by means of an ARMA model's amplitude response as a...

Horizontally embedded Fe(0) electrocoagulation to enhance As(III) removal in biologically active rapid sand filters for drinking water treatment

The presence of high levels of arsenic in groundwater, an otherwise preferred drinking water source, urges the need for innovative and highly efficient (in terms of chemical use and energy consumption) technologies to remove arsenic during drinking water treatment. This research focussed on embedding iron electrocoagulation (Fe-EC) within a...

Evaluation of linear regression and neural network methods for estimating occupancy in office buildings using bGrid sensor data

This thesis outlines the use of measured data collected using the bGrid system to estimate the number of people in two rooms in the Microsoft office at Schiphol. The main objective is to derive a correlation that transforms the data into a specific number of people. The bGrid system consists of a network of sensor nodes that measure CO2...

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...

Detecting Breaking Changes in JavaScript APIs

The goal of this thesis is to explore the current possibilities for detecting breaking changes in JavaScript. For this, we propose an approach and show its accuracy by constructing a tool and evaluating it. The evaluation is carried out on 3 chosen JavaScript projects and a total of 3000 consumer packages. For each of the projects, we compute...

Mobile Application Security: An assessment of bunq's financial app

Several blackbox testing techniques were researched and put to practice. Using these techniques, an assessment of bunq's app has been made.

Exploring Characteristics of Code Churn

Software is a centerpiece in today’s society. Because of that, much effort is spent measuring various aspects of software. This is done using software metrics. Code churn is one of these metrics. Code churn is a metric measuring change volume between two versions of a system, defined as sum of added, modified and deleted lines. We use code churn...

The City Cloud

The final thesis for our Bachelor project. The City Cloud is an extensible system which allows multiple data sources to be accessed from one endpoint, without having to store intermittent data. It relies strongly on the notion of Open Data and encourages governments and firms to publically share data. This can inspire developers and stimulate...

Erosion Negril Beach

The ongoing erosion of the Negril Beach has become worse the past decade. In most places along the coast line, the beach will be gone in approximately 10 years. This will result in a major decrease of incomes that are made by the local tourist sector. To prevent the erosion this study has been performed to find a feasible and affordable solution...

Circulatiekommen als kanaalaansluiting met de rivier bij de stuwen in de Neder-Rijn

Dit is het verslag van het modelonderzoek naar de waterbeweging in de circulatiekommen ("eieren van Thijsse") bij de stuwen in de Neder Rijn. Het doel van het onderzoek was in de eerste plaats het bepalen van het stroombeeld in en rond de kommen. Kennis daarvan is onontbeerlijk ter bepaling van de uitwisseling van water en sediment tussen rivier...