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Rovira Navarro, M. (author), Rieutord, Michel (author), Gerkema, Theo (author), Maas, Leo R.M. (author), van der Wal, W. (author), Vermeersen, L.L.A. (author)
Some of the moons of the outer solar system harbour subsurface liquid oceans. Tidal dissipation plays an important role in preventing these oceans from freezing. In the past, most studies considered only tidal dissipation in the solid layers of these bodies (rock and ice). Recently, new studies considering tidal dissipation in the oceans of...
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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Zhao, Song Chuan (author), Maas, M.A.E. (author), Jansen, K.M.B. (author), van Hecke, Martin (author)
Additive manufacturing strives to combine any combination of materials into 3D functional structures and devices, ultimately opening up the possibility of 3D printed machines. It remains difficult to actuate such devices, thus limiting the scope of 3D printed machines to passive devices or necessitating the incorporation of external actuators...
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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Sunil, E. (author), Ellerbroek, J. (author), Hoekstra, J.M. (author), Maas, J.B. (author)
This paper presents analytical models that describe the safety of unstructured and layered en route airspace designs. Here, ‘unstructured airspace’ refers to airspace designs that offer operators complete freedom in path planning, whereas ‘layered airspace’ refers to airspace concepts that utilize heading-altitude rules to vertically separate...
journal article 2018
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Mirakhorlo, M. (author), Maas, H. (author), Veeger, H.E.J. (author)
Aging has consequences for hand motor control, among others affecting finger force enslaving during static pressing tasks. The aim of this study was to assess whether the extent of finger force enslaving changes with aging during a task that involves both static and dynamic phases. Ten right-handed young (22–30 years) and ten elderly subjects...
journal article 2018
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Xie, Wei (author), Nunez Vicencio, A.A. (author), Maas, Ron (author), Li, Z. (author)
This paper presents a methodology to support decision making based on the tram wheel-rail interface condition. The methodology relies on the following measurements: tram failure log-files regarding wheel-sliding events, monitored acoustics data and open source weather information. The proposed methodology consists of three stages: 1) data...
conference paper 2018
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Mirakhorlo, M. (author), Van Beek, N. (author), Wesseling, M. (author), Maas, H. (author), Veeger, H.E.J. (author), Jonkers, I. (author)
To improve our understanding on the neuromechanics of finger movements, a comprehensive musculoskeletal model is needed. The aim of this study was to build a musculoskeletal model of the hand and wrist, based on one consistent data set of the relevant anatomical parameters. We built and tested a model including the hand and wrist segments, as...
journal article 2018
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van de Ven, E.A. (author), Langelaar, M. (author), Ayas, C. (author), Maas, Robert (author), van Keulen, A. (author)
abstract 2018
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Hoekstra, J.M. (author), Ellerbroek, J. (author), Sunil, E. (author), Maas, J.B. (author)
Both U-space in Europe, as well as UTM in the USA, develop concepts and tools for UAV airspace. Enabling highdensity operations is one of the goals of these studies. Past and recent studies have analysed which factors affect the capacity of a UAV airspace. An improved understanding of this can lead to control methods for capacity management. Two...
conference paper 2018
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van de Ven, E.A. (author), Maas, Robert (author), Ayas, C. (author), Langelaar, M. (author), van Keulen, A. (author)
Additive manufacturing enables the nearly uncompromised production of optimized topologies. However, due to the overhang limitation, some designs require a large number of supporting structures to enable manufacturing. Because these supports are costly to build and difficult to remove, it is desirable to find alternative designs that do not...
journal article 2018
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Haberfehlner, Helga (author), Jaspers, Richard T. (author), Rutz, Erich (author), Harlaar, J. (author), Van Der Sluijs, Johannes A. (author), Witbreuk, Melinda (author), van Hutten, Kim (author), Romkes, Jacqueline (author), Freslier, Marie (author), Brunner, Reinald (author), Becher, Jules G. (author), Maas, H. (author), Buizer, Annemieke I. (author)
To improve gait in children with spastic paresis due to cerebral palsy or hereditary spastic paresis, the semitendinosus muscle is frequently lengthened amongst other medial hamstring muscles by orthopaedic surgery. Side effects on gait due to weakening of the hamstring muscles and overcorrections have been reported. How these side effects...
journal article 2018
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van de Ven, E.A. (author), Verboom, J.M. (author), Ayas, C. (author), Langelaar, M. (author), Maas, Robert (author), van Keulen, A. (author)
abstract 2017
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Maas, T. R. (author), Bouts, M. N. (author), Joosten, G. J.P. (author), Jansen, J.D. (author)
When new wells are planned, typically the same trajectory is used for assessing the effectiveness of conventional wells and wells with smart completions. This study demonstrates that the economically optimized trajectory for smart and conventional wells can be very different. Two new well trajectory optimization algorithms were developed...
conference paper 2017
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Sunil, E. (author), Ellerbroek, J. (author), Hoekstra, J.M. (author), Maas, J.B. (author)
In the context of decentralized separation, airspace stability pertains to the propagation of con?ict chain reactions as a result of tactical con?ict resolution maneuvers. This notion of airspace stability has been used in previous literature to develop a semi-empirical method for determining the capacity of a decentralized direct-routing...
conference paper 2017
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Tra, M.A.P. (author), Sunil, E. (author), Ellerbroek, J. (author), Hoekstra, J.M. (author), Maas, J.B. (author)
Previous research relating airspace structure and ca-pacity has shown that a decentralized layered airspace concept, in which each altitude band limited horizontal travel to within a prede?ned heading range, improved safety when compared to unstructured airspace. However, the extent of the safety bene?ts of such layered airspace designs were not...
conference paper 2017
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Maas, Huub (author), Veeger, H.E.J. (author), Stegeman, Dick F. (author)
journal article 2017
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Mirakhorlo, M. (author), Maas, Huub (author), Veeger, H.E.J. (author)
Finger enslaving is defined as the inability of the fingers to move or to produce force independently. Such finger enslaving has predominantly been investigated for isometric force tasks. The aim of this study was to assess whether the extent of force enslaving is dependent on relative finger movements. Ten right-handed subjects (22–30 years)...
journal article 2017
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van der Walle, P (author), Kramer, E. (author), van der Donck, J.C.J. (author), Mulckhuyse, W (author), Nijsten, L. (author), Bernal Arango, F.A. (author), de Jong, A. (author), van Zeijl, E. (author), Spruit, H. E.T. (author), van den Berg, J.H. (author), Nanda, G. (author), van Langen-Suurling, A.K. (author), Alkemade, P.F.A. (author), Pereira, S.F. (author), Maas, D.J. (author)
Particle defects are important contributors to yield loss in semi-conductor manufacturing. Particles need to be detected and characterized in order to determine and eliminate their root cause. We have conceived a process flow for advanced defect classification (ADC) that distinguishes three consecutive steps; detection, review and...
conference paper 2017
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Schenk, T. (author), Vogel, R.A. (author), Maas, N. (author), Tavasszy, L.A. (author)
Joint fact-finding has been advanced as a method for helping stakeholders grappling with technically intensive policy and planning challenges to collaboratively engage in research and arrive at shared sets of facts to inform their decision-making. This paper introduces joint fact-finding and considers its application in the context of...
journal article 2016
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