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Steijlen, A.S.M. (author), Jansen, K.M.B. (author), Albayrak, A. (author), Verschure, D. O. (author), Van Wijk, D.F. (author)
Background: Cardiovascular diseases (CVD) are the leading cause of morbidity and mortality worldwide. Early diagnosis is of pivotal importance for patients with cardiac arrhythmias and ischemia to minimize the consequences like strokes and myocardial infarctions. The chance of capturing signals of arrhythmias or ischemia is substantially high...
journal article 2018
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Van Wijk, J.M. (author)
Deep sea mining activities require excavation of material at the sea floor, transport of the material from the sea floor to the sea surface and processing of the material afterwards. One way to transport the material from the sea floor to sea surface is by means of a riser with centrifugal pump booster stations. In this research it is...
doctoral thesis 2016
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Harmankaya, U. (author), Kaslilar, A. (author), Van Wijk, K. (author), Wapenaar, C.P.A. (author), Draganov, D.S. (author)
Inspired by a technique called seismic interferometry, we estimate the location of scatterers in a scaled model, where many near-surface scatterers are present. We isolate the scattered wavefield and evaluate correlation of scattered waves at different receiver locations. The cross-correlation eliminates the travel path between a source and a...
conference paper 2015
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Bharosa, N. (author), Van Wijk, R. (author), De Winne, N. (author), Janssen, M.F.W.H.A. (author)
What is digital business reporting? Why do we need it? And how can we improve it? This book aims to address these questions by illustrating the rise of system-to-system information exchange and the opportunities for improving transparency and accountability. Governments around the world are looking for ways to strengthen transparency and...
book 2015
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Van Wijk, A.J.M. (author), Van Wijk, I. (author)
Additive manufacturing or 3D printing, manufacturing a product layer by layer, offers large design freedom and faster product development cycles, as well as low startup cost of production, on-demand production and local production. In principle, any product could be made by additive manufacturing. Even food and living organic cells can be...
book 2015
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Draganov, D.S. (author), Ruigrok, E.N. (author), Ghose, R. (author), Mikesell, D. (author), Van Wijk, K. (author)
We propose a method for estimating the reflection coefficient of a subvertical boundary and the the quality factor of the medium between a receiver and the subvertical boundary. The method uses surface waves from transient deterministic sources and is inspired by the occurrence of non-physical arrivals in seismic-interferometry results due to...
conference paper 2014
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Van Bueren, E.M. (author), Van Wijk, M. (author), Te Brommelstroet, M. (author)
Due to the growth of cities and airports, regional planning becomes increasingly important in airport regions. As major resource consumers, these regions have to become more sustainable to consolidate their competitive position amongst global cities. In the Amsterdam-Schiphol region, stakeholders are searching for new governance arrangements to...
conference paper 2014
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Van Wijk, A.J.M. (author), Verhoef, L. (author)
Fuel cell cars can provide more efficient and cleaner transportation. However, we use our cars for transportation only 5% of the time. When parked, the fuel cell in the car can produce electricity from hydrogen, which is cleaner and more efficient than the current electricity system, generating useful ‘waste’ products in the form of heat and...
book 2014
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De Kok, E. (author), Negeri, E.O. (author), Van Wijk, A. (author), Baken, N. (author)
With the availability of distributed generation (DG), clusters that can autonomously manage their energy profile are emerging in the power grid. These autonomous clusters manage their load profiles by orchestrating their energy resources, such as DG, storage, flexible energy consuming appliances, etc. The performance of such an autonomous...
journal article 2013
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Van Wijk, A.J.M. (author)
A sustainable world can only be achieved by an open collaboration between science, business and the public. That is why we create the Green Village: an innovative, lively, interactive and challenging environment where entrepreneurs, innovators, companies, artists, teachers and visitors can meet, work and play to develop, apply and experience...
book 2013
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Bharosa, N. (author), De Winne, C.P.I. (author), Van Wijk, R. (author), Janssen, M.F.W.H.A. (author)
Lean government is all about doing better with less through the use of ICT and the realisation of process improvements. The recently introduced eXtensible Business Reporting Language (XBRL) has shown some initial success in realising lean government. Once data is stored in XBRL format, businesses can transmit it electronically to government for...
journal article 2012
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Mikesell, T.D. (author), Van Wijk, K. (author), Ruigrok, E.N. (author), Lamb, A. (author), Blum, T.E. (author)
Topography and near-surface heterogeneities lead to traveltime perturbations in surface land-seismic experiments. Usually, these perturbations are estimated and removed prior to further processing of the data. A common technique to estimate these perturbations is the delay-time method. We have developed the “modified delay-time method,” wherein...
journal article 2012
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Ruigrok, E.N. (author), Mikesell, T.D. (author), Van Wijk, K. (author)
A novel method, based on differential arrival times of diffractions from the core-mantle boundary, swiftly scans for seismic velocity anomalies in the crust and mantle below an array of seismometers. The method is applied to data from the USArray and the large-scale structural features in the western United States are resolved. High lateral...
journal article 2012
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Van Wijk, A.J.M. (author)
public lecture 2011
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Van Wijk, C. (author)
Last year, in May, the building of the Faculty of Architecture at the Delft Technical University was destroyed almost entirely by fire. Fortunately, some parts of the building escaped the flames and, after a few days, the library collection of over 40,000 titles was saved, as was the chair collection. It was a narrow escape, and the...
journal article 2011
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Van Wijk, C. (author), Van Ravesteijn, V.F. (author), Vos, F.M. (author), Van Vliet, L.J. (author)
Today’s computer aided detection systems for computed tomography colonography (CTC) enable automated detection and segmentation of colorectal polyps.We present a paradigm shift by proposing a method that measures the amount of protrudedness of a candidate object in a scale adaptive fashion. One of the main results is that the performance of the...
journal article 2010
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Van Wijk, C. (author)
In this thesis several image processing techniques are proposed for the detection of colorectal polyps in images obtained by CT colonography.
doctoral thesis 2010
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Van Ravesteijn, V.F. (author), Van Wijk, C. (author), Vos, F.M. (author), Truyen, R. (author), Peters, J.F. (author), Stoker, J. (author), Van Vliet, L.J. (author)
We present a computer-aided detection (CAD) system for computed tomography colonography that orders the polyps according to clinical relevance. TheCADsystem consists of two steps: candidate detection and supervised classification. The characteristics of the detection step lead to specific choices for the classification system. The candidates are...
journal article 2010
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Cornelissen, S.G.M. (author), Zaidman, A. (author), Holten, D. (author), Moonen, L. (author), Van Deursen, A. (author), Van Wijk, J.J. (author)
Preprint of article published in: Journal of Systems and Software (Elsevier), 81 (12), 2008; doi:10.1016/j.jss.2008.02.068 An important part of many software maintenance tasks is to gain a sufficient level of understanding of the system at hand. The use of dynamic information to aid in this software understanding process is a common practice...
report 2008
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Holten, D. (author), Cornelissen, B. (author), Van Wijk, J.J. (author)
One way of gaining understanding of a software system is the analysis of dynamic information, i.e., program execution traces. A problem regarding the analysis of such traces is the fact that these are often extremely large: hundreds of thousands and even millions of calls within a single trace are no exception. To aid a user in navigating and...
report 2007
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