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Boonstra, Marchien (author)Personal weather station (PWS) networks have the potential to supply precipitation data at high spatial and temporal resolution for urban hydrological modeling. Past research has shown promising results on the quality of PWS data, for example from Netatmo gauges, but studies on other PWS brands are limited. This thesis assesses the quality of...master thesis 2024
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Boonstra, Nils (author)Hydropower is currently the largest renewable energy generation method worldwide, being the third overall after coal and natural gas, and providing 15% of global electricity. However, generation data regarding hydropower is scarce. If available, it mostly exists at national and annual level. Only limited generation data is available at plant...master thesis 2023
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Chamari, L. (author), van der Weijden, J.A.M. (author), Boonstra, L. (author), Hoekstra, W.S. (author), Petrova, E. (author), Pauwels, P. (author)The integration of data from a variety of systems is critical for developing smart building applications. Design, construction, maintenance, energy management, and automation data are among few. For this integration, having a comprehensive metadata schema is crucial. Semantic web technologies and domain ontologies have been proposed as a means...conference paper 2023
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Dijkstra, Aranka M. (author), Tiekstra, Siebrith M. (author), Boonstra, Marije (author), Joore, Peter (author)The use of Living Labs is a promising approach to develop and test sustainable system innovations. A Living Lab approach that is yet to be discussed in literature, is that of a Festival Living Lab (FLL). Festivals can be considered as temporary mini societies with systemic sustainability challenges regarding water, energy, housing, logistics,...conference paper 2023
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Boonstra, Dirk-Jan (author)Tactile sensing provides crucial information about the stability of a grasped object by a robotic gripper. Tactile feedback can be used to predict slip, allowing for timely response to perturbations and to avoid dropping objects. Tactile sensors, included in robotic grippers, measure vibrations, strain or shearing forces which are produced by...master thesis 2022
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Scharff, R.B.N. (author), Boonstra, D. (author), Willemet, L. (author), Lin, X. (author), Wiertlewski, M. (author)Tactile sensing can provide access to information about the contact (i.e. slippage, surface feature, friction), which is out of reach of vision but crucial for manipulation. To access this information, a dense measurement of the deformation of soft fingertips is necessary. Recently, tactile sensors that rely on a camera looking at a deformable...conference paper 2022
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Boonstra, Kaj (author)Hidden Myths is a transgressive architectural manifestation. It is a symptom of and reaction to a larger phenomenon; a series of Infectious Voidscapes that can be found throughout the city of Mashhad. Hidden Myths activates the forgotten memories of its site, through its physical catalogue of elements, procedures, and constellations. Through...master thesis 2021
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Legerstee, W.J. (author), Boekel, M.G.M. (author), Boonstra, S. (author), Kelder, E.M. (author)An Atomic Force Microscope (AFM) is combined with a special designed glovebox system and coupled to a Galvanostat/Potentiostat to allow measurements on electrochemical properties for battery research. An open cell design with electrical contacts makes it possible to reach the electrode surface with the cantilever so as to perform measurements...journal article 2021
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Roebroek, Caspar T.J. (author), Hut, R.W. (author), Vriend, Paul (author), De Winter, Winnie (author), Boonstra, Marijke (author), Van Emmerik, Tim H.M. (author)Anthropogenic macrolitter (>0.5 cm) in rivers is of increasing concern. It has been found to have an adverse effect on riverine ecosystem health, and the livelihoods of the communities depending on and living next to these ecosystems. Yet, little is known on how macrolitter reaches and propagates through these ecosystems. A better...journal article 2021
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Koopmans, Léon V.E. (author), Barkana, Rennan (author), Bentum, Mark (author), Bernardi, Gianni (author), Boonstra, Albert Jan (author), Bowman, Judd (author), Burns, Jack (author), Chen, Xuelei (author), Gurvits, L. (author)The Dark Ages and Cosmic Dawn are largely unexplored windows on the infant Universe (z ~ 200–10). Observations of the redshifted 21-cm line of neutral hydrogen can provide valuable new insight into fundamental physics and astrophysics during these eras that no other probe can provide, and drives the design of many future ground-based...journal article 2021
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Boonstra, B.C. (author)In this thesis we introduce valuation techniques to price electricity storage contracts, where the electricity prices follow a structural model based on polynomial processes. In particular we focus on a Fourier-based pricing method known as the COS method, which performs impressively to price the contracts accurately. We provide details on how...master thesis 2020
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Boonstra, Arjan (author)Glass buildings seem to be as popular as ever (Louter, 2011) and glass shapes the appearance of contemporary architecture unlike any other building material (Wurm, 2007). Moreover, the demand for glass buildings is rising (Eskilson, 2018). As designers look to make the buildings as transparent as possible, the ambition is to execute structural...master thesis 2020
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Boonstra, Sjoerd (author)The awareness of the climate change is increasing and the effect of air-pollution is irrefutable. To decrease the emissions of large ships the required amount of fuel has to be minimized. This is done by increasing the efficiency of the engine, decreasing the hull resistance or by lowering the cruise speed. Another interesting way of decreasing...master thesis 2020
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Bentum, M. J. (author), Verma, M. K. (author), Rajan, R.T. (author), Boonstra, A. J. (author), Verhoeven, C.J.M. (author), Gill, E.K.A. (author), van der Veen, A.J. (author), Falcke, H. (author), Gurvits, L. (author)The past two decades have witnessed a renewed interest in low frequency radio astronomy, with a particular focus on frequencies above 30 MHz e.g., LOFAR (LOw Frequency ARray) in the Netherlands and its European extension ILT, the International LOFAR Telescope. However, at frequencies below 30 MHz, Earth-based observations are limited due to a...journal article 2020
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Boonstra, Rep (author)In the early 00 of this century, Keuning et al. (2007) looked into the hydrodynamic forces on the rudder and the influence of the hull and keel on these forces. Among others, they have assessed the lift and drag forces on the rudder. One of the outcomes of this study was an asymmetric lift curve; for negative rudder angles the rudder seems to...master thesis 2019
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Boonstra, Boris (author)In dit verslag zullen drie verschillende GARCH modellen worden onderzocht,<br/>namelijk het univariate GARCH model, het multivariate CCC model en het<br/>multivariate DCC model. GARCH modellen zijn modellen die de volatiliteit<br/>van tijdreeksen kunnen voorspellen. De drie modellen zullen uitgebreid besproken worden, er zullen simulaties mee...bachelor thesis 2017
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Pasma, J.H. (author), Boonstra, T.A. (author), van Kordelaar, J. (author), Spyropoulou, V. (author), Schouten, A.C. (author)Balance control models are used to describe balance behavior in health and disease. We identified the unique contribution and relative importance of each parameter of a commonly used balance control model, the Independent Channel (IC) model, to identify which parameters are crucial to describe balance behavior. The balance behavior was expressed...journal article 2017
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Rajan, R.T. (author), Boonstra, A.J. (author), Bentum, M. (author), Klein-Wolt, M. (author), Belien, F. (author), Arts, M. (author), Saks, N. (author), Van der Veen, A.J. (author)The past decade has seen the advent of various radio astronomy arrays, particularly for low-frequency observations below 100 MHz. These developments have been primarily driven by interesting and fundamental scientific questions, such as studying the dark ages and epoch of re-ionization, by detecting the highly red-shifted 21 cm line emission....journal article 2015
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Boonstra, M.C. (author), Van Driel, P.B.A.A. (author), Van Willigen, D.M. (author), Stammes, M.A. (author), Prevoo, H.A.J.M. (author), Tummers, Q.R.J.G. (author), Mazar, A.P. (author), Beekman, F.J. (author), Kuppen, P.J.K. (author), Van de Velde, C.J.H. (author), Löwik, C.W.G.M. (author), Frangioni, J.V. (author), Van Leeuwen, F.W.B. (author), Sier, C.F.M. (author), Vahrmeijer, A.L. (author)Pre- and intraoperative diagnostic techniques facilitating tumor staging are of paramount importance in colorectal cancer surgery. The urokinase receptor (uPAR) plays an important role in the development of cancer, tumor invasion, angiogenesis, and metastasis and over-expression is found in the majority of carcinomas. This study aims to develop...journal article 2015
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Boonstra, T.A. (author), Van Vugt, J.P.P. (author), Van der Kooij, H. (author), Bloem, B.R. (author)Balance control (the ability to maintain an upright posture) is asymmetrically controlled in a proportion of patients with Parkinson’s disease. Gait asymmetries have been linked to the pathophysiology of freezing of gait. We speculate that asymmetries in balance could contribute to freezing by a) hampering the unloading of the stepping leg and...journal article 2014