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Kirchner, K. (author), Schwab, Christoph (author)
We formulate standard and multilevel Monte Carlo methods for the kth moment M<sub>ε</sub><sup>k</sup>[ξ] of a Banach space valued random variable ξ:Ω→E, interpreted as an element of the k-fold injective tensor product space ⊗<sub>ε</sub><sup>k</sup>E. For the standard Monte Carlo estimator of M<sub>ε</sub><sup>k</sup>[ξ], we prove the k...
journal article 2024
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Oosterhoff, J.H.F. (author), Karhade, Aditya V. (author), Groot, Olivier Q. (author), Schwab, Joseph H. (author), Heng, Marilyn (author), Klang, Eyal (author), Prat, Dan (author)
Purpose: Mortality prediction in elderly femoral neck fracture patients is valuable in treatment decision-making. A previously developed and internally validated clinical prediction model shows promise in identifying patients at risk of 90-day and 2-year mortality. Validation in an independent cohort is required to assess the generalizability;...
journal article 2023
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Haasnoot, Jelle (author), Happee, R. (author), van der Wijk, V. (author), Schwab, A.L. (author)
Bicycle simulators have been the subject of considerable research, however, few of these attempts have integrated direct balance control and realistic freedom of motion to deliver a real-world dynamic cycling experience. This study presents the BIKE (Bicycle Intrinsic Kinematics Emulator) system, a kinematic bicycle simulator, developed with...
journal article 2023
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de Jong, P.H. (author), Schwab, A.L. (author), Mirzaali, Mohammad J. (author), Zadpoor, A.A. (author)
Shape-morphing structures have the ability to adapt to various target shapes, offering significant advantages for many applications. However, predicting their behavior presents challenges. Here, we present a method to assess the shape-matching behavior of shape-morphing structures using a multibody systems approach wherein the structure is...
journal article 2023
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Wesdorp, Marinus A. (author), Schwab, Andrea (author), Bektas, Ezgi Irem (author), Narcisi, Roberto (author), Eglin, David (author), Stoddart, Martin J. (author), van Osch, G.J.V.M. (author), D'Este, Matteo (author)
Neutrophils play a pivotal role in orchestrating the immune system response to biomaterials, the onset and resolution of chronic inflammation, and macrophage polarization. However, the neutrophil response to biomaterials and the consequent impact on tissue engineering approaches is still scarcely understood. Here, we report an in vitro...
journal article 2023
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Oosterhoff, J.H.F. (author), Dijkstra, H.F. (author), Karhade, Aditya V. (author), Poolman, Rudolf W. (author), Schipper, Inger B. (author), Nelissen, R.G.H.H. (author), van Embden, Daphne (author), Jaarsma, Ruurd L. (author), Schwab, Joseph H. (author)
Purpose: Effects of clockwise torque rotation onto proximal femoral fracture fixation have been subject of ongoing debate: fixated right-sided trochanteric fractures seem more rotationally stable than left-sided fractures in the biomechanical setting, but this theoretical advantage has not been demonstrated in the clinical setting to date. The...
journal article 2023
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Schwab, Andrea (author), Wesdorp, Marinus A. (author), Xu, J. (author), Abinzano, Florencia (author), Loebel, Claudia (author), Levato, Riccardo (author), Eglin, David (author), Narcisi, Roberto (author), Malda, Jos (author), van Osch, G.J.V.M. (author)
Background: The use of acellular hydrogels to repair osteochondral defects requires cells to first invade the biomaterial and then to deposit extracellular matrix for tissue regeneration. Due to the diverse physicochemical properties of engineered hydrogels, the specific properties that allow or even improve the behaviour of cells are not yet...
journal article 2023
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Dialynas, G. (author), Christoforidis, Christos (author), Happee, R. (author), Schwab, A.L. (author)
Experiments and human rider models were used to investigate bicycle balance and steering using visuo/vestibular motion and proprioceptive feedback taking into account sensory delays. An instrumented steer-by-wire bicycle designed and built at the TU Delft bicycle laboratory was used to investigate rider responses with and with reduced...
journal article 2022
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Schwab, A.L. (author), Meijaard, J.P. (author)
journal article 2021
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Bruni, S. (author), Meijaard, J.P. (author), Rill, G. (author), Schwab, A.L. (author)
A review of the current use of multibody dynamics methods in the analysis of the dynamics of vehicles is given. Railway vehicle dynamics as well as road vehicle dynamics are considered, where for the latter the dynamics of cars and trucks and the dynamics of single-track vehicles, in particular motorcycles and bicycles, are reviewed....
journal article 2020
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Lee, O.Z.A. (author), Rasch, Alexander (author), Schwab, A.L. (author), Dozza, Marco (author)
This paper introduces a framework for modelling the cyclist's comfort zone. Unlike the driver's comfort zone, little is known about the cyclist's. The framework draws on existing literature in cognitive science about driver behaviour to explain experimental results from cycling field trials, and the modelling of these results. We modelled...
journal article 2020
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Dialynas, G. (author), de Haan, Jelle (author), Schouten, A.C. (author), Happee, R. (author), Schwab, A.L. (author)
The objective of this study was to identify the dynamic response of the bicycle rider’s body during translational perturbations, in an effort to improve two-wheeler safety and comfort. A bicycle mock-up was equipped with sensors measuring three-dimensional seat and trunk accelerations and rider’s force responses at the seat, handlebars, and...
journal article 2020
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Dialynas, G. (author), Happee, R. (author), Schwab, A.L. (author)
With the resurgence in bicycle ridership in the last decade and the continuous increase of electric bicycles in the streets a better understanding of bicycle rider behaviour is imperative to improve bicycle safety. Unfortunately, these studies are dangerous for the rider, given that the bicycle is a laterally unstable vehicle and most of the...
journal article 2019
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Baines, P.M. (author), Schwab, A.L. (author), van Soest, A.J. (author)
Metabolic energy expenditure during human gait is poorly understood. Mechanical energy loss during heel strike contributes to this energy expenditure. Previous work has estimated the energy absorption during heel strike as 0.8 J using an effective foot mass model. The aim of our study is to investigate the possibility of determining the energy...
journal article 2018
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De Jong, Jenny (author), Fokkink, R.J. (author), Olsder, G.J. (author), Schwab, A.L. (author)
In a cycling time trial, the rider needs to distribute his power output optimally to minimize the time between start and finish. Mathematically, this is an optimal control problem. Even for a straight and flat course, its solution is non-trivial and<br/>involves a singular control, which corresponds to a power that is slightly above the aerobic...
journal article 2017
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van der Kruk, E. (author), Veeger, H.E.J. (author), van der Helm, F.C.T. (author), Schwab, A.L. (author)
Advice about the optimal coordination pattern for an individual speed skater, could be addressed by simulation and optimization of a biomechanical speed skating model. But before getting to this optimization approach one needs a model that can reasonably match observed behaviour. Therefore, the objective of this study is to present a verified...
journal article 2017
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van der Kruk, E. (author), Den Braver (student), O. (author), Schwab, A.L. (author), van der Helm, F.C.T. (author), Veeger, H.E.J. (author)
In the current project, we aim to provide speed skaters with real-time feedback on how to improve their skating performance within an individual stroke. The elite skaters and their coaches wish for a system that determines the mechanical power per stroke. The push-off force of the skater is a crucial variable in this power determination. In...
journal article 2016
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Kovacsova, N. (author), de Winter, J.C.F. (author), Schwab, A.L. (author), Christoph, M. (author), Twisk, D. A M (author), Hagenzieker, Marjan (author)
This study investigated cycling performance of middle-aged (30–45 years old; n = 30) versus older (65+ years; n = 31) participants during low-speed tasks for which stabilization skills are known to be important. Additionally, participants’ self-ratings of their cycling skills and performance were assessed. Participants rode once on a...
journal article 2016
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Kovacsova, N. (author), Di Gesu, M. (author), Schwab, A.L. (author), Gubitosa, M. (author), Hagenzieker, M.P. (author), De Winter, J.C.F. (author)
journal article 2015
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Moore, J.K. (author), Kooijman, J.D.G. (author), Schwab, A.L. (author), Hubbard, M. (author)
Recent observations of a bicyclist riding through town and on a treadmill show that the rider uses the upper body very little when performing normal maneuvers and that the bicyclist may, in fact, primarily use steering input for control. The observations also revealed that other motions such as lateral movement of the knees were used in low...
journal article 2010
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