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Chen, L. (author), Ling, Fangqiong (author), Bakker, Geo (author), Liu, Wen Tso (author), Medema, G.J. (author), van der Meer, W.G.J. (author), Liu, G. (author)
Worldwide, it is common that the drinking water distribution systems (DWDSs) may be subjected to changes of supply water quality due to the needs of upgrading the treatment processes or switching the source water. However, the potential impacts of quality changed supply water on the stabilized ecological niches within DWDSs and the associated...
journal article 2020
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Bakker, M. (author)
A new analytic solution is presented for tidal propagation in multilayer coastal aquifers consisting of an arbitrary number of layers. The solution is derived using matrix calculus and may be applied to simulate tidal propagation in systems where aquifer layers are separated by leaky layers of low permeability or in stratified aquifers. The head...
journal article 2019
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Jacobsen, Niels G. (author), Bakker, Wout (author), Uijttewaal, W.S.J. (author), Uittenbogaard, Rob (author)
The work presents an experimental investigation into the motion of and hydrodynamic forces along a single flexible stem in regular waves. The experiment covers a large range in relevant non-dimensional parameters: the drag-to-stiffness ratio, the inertia-to-stiffness ratio, the Keulegan-Carpenter number and the Reynolds number. The two first...
journal article 2019
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van Engelshoven, Y.D. (author), Wen, P. (author), Bakker, M.C.M. (author), Balkenende, A.R. (author), Rem, P.C. (author)
An innovative route for plastics recycling is proposed, based on a combination of a logarithmic sorting process and colour plus high-resolution near-infrared (NIR) sensors. Although counterintuitive, it is shown that such a technology could sort clean flakes from rigid packaging waste into a very large number of different plastic grades with...
journal article 2019
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Obergfell, C.C.A. (author), Bakker, M. (author), Maas, C. (author)
Time series analysis is applied to identify and analyze a transition in the groundwater regime in the aquifer below the sand ridge of Salland in the Netherlands, where groundwater regime refers to the range of head variations throughout the seasons. Standard time series analysis revealed a discrepancy between modeled and observed heads in...
journal article 2019
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van Altena, V.P. (author), Krans, Jan (author), Bakker, Henk (author), Dukai, B. (author), Stoter, J.E. (author)
Before the interpretation of any text can start, the original wording of the text itself must be critically established. Conventionally, this is done following qualitative criteria. This article, however, explores the application of spatial analyses to New Testament textual criticism by demonstrating how the Levenshtein edit distance could be...
journal article 2019
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Bakker, R.R. (author), Barnhoorn, A. (author)
We study the potential formation damage effects due to radial jet drilling on Bentheim sandstone, a homogeneous sandstone that is well established in terms of mechanical properties and widely used as reservoir analogue. We quantify how properties degrade with distance from a jetted hole on μm scale (porosity) and cm scale (compressive, tensile...
journal article 2019
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Collenteur, R.A. (author), Bakker, M. (author), Caljé, Ruben (author), Klop, Stijn A. (author), Schaars, Frans (author)
Time series analysis is an increasingly popular method to analyze heads measured in an observation well. Common applications include the quantification of the effect of different stresses (rainfall, pumping, etc.), and the detection of trends and outliers. Pastas is a new and open source Python package for the analysis of hydrogeological time...
journal article 2019
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Bakker, M. (author), Schaars, Frans (author)
Time series analysis is a data-driven approach to analyze time series of heads measured in an observation well. Time series models are commonly much simpler and give much better fits than regular groundwater models. Time series analysis with response functions gives insight into why heads vary, while such insight is difficult to gain with black...
journal article 2019
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Sauerwein, M. (author), Doubrovski, E.L. (author), Balkenende, A.R. (author), Bakker, C.A. (author)
Additive manufacturing, also known as 3D printing, is acknowledged for its potential to support sustainable design. In this paper, we explore whether the opportunities that additive manufacturing offers for sustainable design are also useful when designing for a circular economy, and to what extent additive manufacturing can support design...
journal article 2019
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Obergfell, C.C.A. (author), Bakker, M. (author), Maas, C. (author)
A new method is presented to estimate average diffuse aquifer recharge of water table aquifers in temperate climates using time series analysis of water table level fluctuations. An accurate estimate of the recharge caused by rainfall requires an accurate estimate of the influence of evaporation. In temperate climates, evaporation imprints a...
journal article 2019
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Klamer, Pim (author), Gruis, V.H. (author), Bakker, Cok (author)
Purpose: Information verification is an important factor in commercial valuation practice. Valuers use their professional autonomy to decide on the level of verification required, thereby creating an opportunity for client-related judgement bias in valuation. The purpose of this paper is to assess the manifestation of client attachment risks...
journal article 2019
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des Tombe, B.F. (author), Bakker, M. (author), Smits, F.J.C. (author), Schaars, Frans (author), van der Made, Kees Jan (author)
An approach is presented to determine groundwater flow in unconsolidated aquifers with a heat pulse response test using a heating cable and a fiber-optic cable. The cables are installed together using direct push so that the cables are in direct contact with the aquifer. The temperature response is measured for multiple days along the fiber...
journal article 2019
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Bradley, C.E. (author), Randall, J.A.D. (author), Abobeih, M.H.M.A. (author), Berrevoets, R.C. (author), Degen, M.J. (author), Bakker, M. (author), Markham, M. (author), Twitchen, D. J. (author), Taminiau, T.H. (author)
Spins associated with single defects in solids provide promising qubits for quantum-information processing and quantum networks. Recent experiments have demonstrated long coherence times, high-fidelity operations, and long-range entanglement. However, control has so far been limited to a few qubits, with entangled states of three spins...
journal article 2019
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Abobeih, M.H.M.A. (author), Cramer, J. (author), Bakker, M.V. (author), Kalb, N. (author), Markham, M. (author), Twitchen, D. J. (author), Taminiau, T.H. (author)
Single electron spins coupled to multiple nuclear spins provide promising multi-qubit registers for quantum sensing and quantum networks. The obtainable level of control is determined by how well the electron spin can be selectively coupled to, and decoupled from, the surrounding nuclear spins. Here we realize a coherence time exceeding a...
journal article 2018
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des Tombe, B.F. (author), Bakker, M. (author), Schaars, Frans (author), van der Made, Kees Jan (author)
An approach is presented to determine the seasonal variations in travel time in a bank filtration system using a passive heat tracer test. The temperature in the aquifer varies seasonally because of temperature variations of the infiltrating surface water and at the soil surface. Temperature was measured with distributed temperature sensing...
journal article 2018
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Post, Vincent E.A. (author), Essink, Gualbert Oude (author), Szymkiewicz, Adam (author), Bakker, M. (author), Houben, Georg (author), Custodio, Emilio (author), Voss, Clifford (author)
The Salt Water Intrusion Meetings, or SWIMs, are a series of meetings that focus on seawater intrusion in coastal aquifers and other salinisation processes. 2018 marks the 50th year of the SWIM and the 25th biennial meeting. The SWIM proceedings record half a century of research progress on site characterisation, geophysical and geochemical...
journal article 2018
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Sumter, D.X. (author), Bakker, C.A. (author), Balkenende, A.R. (author)
In the transition to a circular economy companies are exploring new business models, implying a shift from selling products to offering products in circular business models, such as leasing.<br/>Product design is thought to play a crucial role in enabling this. Having a robust overview of relevant design roles and competencies is of foundational...
journal article 2018
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Bakker, H.L.M. (author), Wang, Fan (author), Bosch-Rekveldt, M.G.C. (author), Eykelenboom, MG (author)
Projects in the process industry are getting more complex from a technical as well as an organizational point of view. These projects can be considered as series of multi-phase and multi-discipline design and engineering activities involving contributions from many parties on many locations. In order to successfully perform such projects...
journal article 2018
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van Altena, V.P. (author), Bakker, Henk (author), Stoter, J.E. (author)
This article explores, via three case studies, how spatio‐temporal analysis can advance New Testament text interpretation. Acts 2, verse 9 to 11 is the text of study. Case study 1 applies network analysis to data representing the Roman road network constrained by parameters valid for ancient times. This analysis provided new information on the...
journal article 2018
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