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Vittorietti, M. (author), Kok, Piet J.J. (author), Sietsma, J. (author), Jongbloed, G. (author)Understanding the intricate and complex materials microstructure and how it is related to materials properties is an important problem in the Materials Science field. For a full comprehension of this relation, it is fundamental to be able to describe the main characteristics of the 3-dimensional microstructure. The most basic model used for...journal article 2019
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Marijnissen, R.J.C. (author), Kok, M. (author), Kroeze, Carolien (author), van Loon-Steensma, J.M. (author)It is not uncommon for a flood defence to be combined with other societal uses as a multifunctional flood defence, from housing in urban areas to nature conservation in rural areas. The assessment of the safety of multifunctional flood defences is often done using conservative estimates. This study synthesizes new probabilistic approaches to...journal article 2019
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Curran, A.N. (author), de Bruijn, Karin M. (author), Klerk, W.J. (author), Kok, M. (author)To make informed flood risk management (FRM) decisions in large protected river systems, flood risk and hazard analyses should include the potential for dike breaching. 'Load interdependency' analyses attempt to include the system-wide effects of dike breaching while accounting for the uncertainty of both river loads and dike fragility. The...journal article 2019
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Kok, M. (author), van de Riet, O. (author), Walker, W.E. (author)Here we examine whether a study conducted 25 years ago (1992) would have had different conclusions if concepts and analytical methods developed since then had been used. The 1992 problem was to identify a strategy for reducing flood risk in the Netherlands by, for example, strengthening the river dikes against the risk of flooding. Since then,...journal article 2019
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Yunika, A. (author), Kok, M. (author), de Gijt, J.G. (author), Huizinga, J. (author), Ginting, S. (author)Digital Elevation Model (DEM) is an important component in flood inundation modelling as a part of flood risk analysis. However, Digital Surface Model (DSM) which still contains noises of artefacts is more common to be available than DEM. Then DSM misleads the inundation extent. This study will evaluate a measure to obtain a bare-earth...journal article 2019
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Kok, Aimee C. (author), den Dunnen, S. (author), Lambers, Kaj T.A. (author), Kerkhoffs, Gino M.M.J. (author), Tuijthof, G.J.M. (author)Objective: Surgical microfracture is considered a first-line treatment for talar osteochondral defects. However, current rigid awls and drills limit access to all locations in human joints and increase risk of heat necrosis of bone. Using a flexible water jet instrument to drill holes can improve the reachability of the defect without...journal article 2019
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Kok, M. (author), Schön, Thomas B. (author)We present a novel algorithm for online, real-time orientation estimation. Our algorithm integrates gyroscope data and corrects the resulting orientation estimate for integration drift using accelerometer and magnetometer data. This correction is computed, at each time instance, using a single gradient descent step with fixed step length. This...journal article 2019
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Klerk, W.J. (author), Schweckendiek, T. (author), den Heijer, Frank (author), Kok, M. (author)One of the most rapidly emerging measures in infrastructure asset management is Structural Health Monitoring (SHM), which aims at reducing uncertainty in structural performance by using monitoring equipment. As earthen flood defence structures typically have large strength uncertainties, such techniques can be particularly promising. However,...journal article 2019
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Kok, D.D. (author), Pande, S. (author), van Lier, J.B. (author), Ortigara, Angela R.C. (author), Savenije, Hubert (author), Uhlenbrook, S. (author)Phosphorus is a nutrient necessary for the development of crops and is thus commonly applied as fertilizer to sustain agricultural production. It occurs naturally, in indefinite quantities of uncertain quality in phosphate rock formations, but also accumulates in urban and livestock wastewater wherefrom it is often lost as a pollutant....journal article 2018
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Lendering, K.T. (author), Sebastian, Antonia (author), Jonkman, Sebastiaan N. (author), Kok, M. (author)The application of risk-based approaches for the design of flood infrastructure has become increasingly common in flood management. This approach, based on risk reduction and reliability, is used to assess the performance of conventional interventions (e.g., flood defences and dams) and to support decisions regarding their implementation....journal article 2018
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Aher, Amol (author), Kok, M.W.A. (author), Sharma, Ashwani (author), Rai, Ankit (author), Olieric, Natacha (author), Rodriguez-Garcia, Ruddi (author), Katrukha, Eugene A. (author), Weinert, Tobias (author), Olieric, Vincent (author), Kapitein, Lukas C. (author), Steinmetz, Michel O. (author), Dogterom, A.M. (author), Akhmanova, Anna (author)The dynamic instability of microtubules plays a key role in controlling their organization and function, but the cellular mechanisms regulating this process are poorly understood. Here, we show that cytoplasmic linker-associated proteins (CLASPs) suppress transitions from microtubule growth to shortening, termed catastrophes, including those...journal article 2018
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Kok, D.D. (author), Pande, S. (author), Ortigara, Angela Renata Cordeiro (author), Savenije, Hubert (author), Uhlenbrook, S. (author)Despite Africa controlling the vast majority of the global phosphate it also faces the greatest food shortages - partially due to a lack of access to the fertilizer market. A more accessible source of phosphorus comes from wastewater flows, which is currently lost through the discharge to open surface waters. Analysing the potential...journal article 2018
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Lendering, K.T. (author), Schweckendiek, T. (author), Kok, M. (author)Polders in the Netherlands are protected from flooding by flood defence systems along main water bodies such as rivers, lakes or the sea. Inside polders, canal levees provide protection from smaller water bodies. Canal levees are mainly earthen levees along drainage canals that drain excess water from polders to the main water bodies. The...journal article 2018
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Tümer, N. (author), Kok, A.C. (author), Vos, F.M. (author), Streekstra, Geert J. (author), Askeland, Christian (author), Tuijthof, G.J.M. (author), Zadpoor, A.A. (author)A rigid surface–volume registration scheme is presented in this study to register computed tomography (CT) and free-hand tracked ultrasound (US) images of the talocrural joint. Prior to registration, bone surfaces expected to be visible in US are extracted from the CT volume and bone contours in 2D US data are enhanced based on monogenic signal...journal article 2018
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Kok, Laura M. (author), Schrijvers, Jim (author), Fiocco, Marta (author), van Royen, Barend (author), Harlaar, J. (author)Purpose: The aim of this study is to determine the relationship between complaints of the neck and shoulder region, the jaw-shoulder violin fixation force, and the activity of the neck and shoulder muscles in violinists. Methods: In this case-control study twenty professional violinists were included, of which ten with current complaints of...journal article 2018
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Tas, Roderick P. (author), Chen, Chiung Yi (author), Katrukha, Eugene A. (author), Vleugel, M. (author), Kok, M.W.A. (author), Dogterom, A.M. (author), Akhmanova, Anna (author), Kapitein, Lukas C. (author)Force generation by molecular motors drives biological processes such as asymmetric cell division and cell migration. Microtubule gliding assays in which surface-immobilized motor proteins drive microtubule propulsion are widely used to study basic motor properties as well as the collective behavior of active self-organized systems....journal article 2018
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Curran, A.N. (author), De Bruijn, K. M. (author), Kok, M. (author)Hazard analysis is a crucial step in flood risk management, and for large rivers, the effects of breaches need to be taken into account. Hazard analyses that incorporate this overall “system behaviour” have become increasingly popular in flood risk assessment. Methods to perform such analyses often focus on high water levels as a trigger for...journal article 2018
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van der Krogt, M.G. (author), Schweckendiek, T. (author), Kok, M. (author)Transformation models are used to infer geotechnical properties from indirect measurements. A site-specific transformation model can be calibrated with direct and indirect measurements from a site. When such a model is used, then spatial variability, measurement errors and statistical uncertainty propagate into the uncertainty of the spatial...journal article 2018
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Dupuits, E.J.C. (author), Diermanse, Ferdinand Lennaert Machiel (author), Kok, M. (author)Flood defence systems can be seen as multiple interdependent flood defences. This paper advances an approach for finding an optimal configuration for flood defence systems based on an economic cost-benefit analysis with an arbitrary number of interdependent flood defences. The proposed approach is based on a graph algorithm and is, thanks to...journal article 2017
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Belligoli, Z. (author), Dwight, R.P. (author), Kok, G. J.P. (author), Lucas, P. (author)This paper presents an approach for updating the epistemic uncertainty of ultrasonic flow meter measurements under non-ideal flow conditions. Instead of re-calibrating the instrument to correct its behavior in these difficult working conditions, a Bayesian calibration of a computer model of the real process is used. The numerical model is...journal article 2017