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- Smit, J. M. (author), van Genderen, M. E. (author), Reinders, M.J.T. (author), Gommers, D. A.M.P.J. (author), Krijthe, J.H. (author), Van Bommel, J. (author) journal article 2021
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The Stumblemeter: Design and Validation of a System That Detects and Classifies Stumbles during Gaitden Hartog, D.D.G. (author), Harlaar, J. (author), Smit, G. (author)Stumbling during gait is commonly encountered in patients who suffer from mild to serious walking problems, e.g., after stroke, in osteoarthritis, or amputees using a lower leg prosthesis. Instead of self-reporting, an objective assessment of the number of stumbles in daily life would inform clinicians more accurately and enable the evaluation...journal article 2021
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Leclercq, E.M. (author), Smit, M.J. (author)De circulaire transitie wordt vaak gepresenteerd als uitsluitend een technologische opgave, maar deze raakt tegelijkertijd aan sociale, organisatorische en institutionele vraagstukken, die veel vragen oproepen over ontwerpprocessen, benodigde kennis en kunde, verantwoordelijkheid en taakverdeling. Het sluiten van de verschillende...report 2021
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Valentine, David Callisto (author), Smit, I.R. (author), Kim, E.D.H. (author)Trust is an important factor in building acceptance of autonomous vehicles within our society, but the complex nature of trust makes it challenging to design for an appropriate level of trust. This can lead to instances of mistrust and/or distrust between users and AV’s. Designing for calibrated trust is a possible option to address this...journal article 2021
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Creating 3d indoor first responder situation awareness in real-time through a head-mounted ar deviceSmit, Bart Peter (author), Voûte, R.L. (author), Verbree, E. (author)Emergency operations are a key example for the need of digital twins in the way it is complex, urgent and uncertain. First, the process is complex, as many organizations are involved. Second, it is urgent, as most damage is done in the first moments of an emergency. Third, it is uncertain, as situational conditions tend to change quickly. For...journal article 2021
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Culmone, C. (author), Lussenburg, K.M. (author), Alkemade, J.P.E. (author), Smit, G. (author), Sakes, A. (author), Breedveld, P. (author)In the field of medical instruments, additive manufacturing allows for a drastic reduction in the number of components while improving the functionalities of the final design. In addition, modifications for users’ needs or specific procedures become possible by enabling the production of single customized items. In this work, we present the...journal article 2021
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Smit, Jordi (author), Ponnambalam, C.T. (author), Spaan, M.T.J. (author), Oliehoek, F.A. (author)Offline reinforcement learning (RL), or learning from a fixed data set, is an attractive alternative to online RL. Offline RL promises to address the cost and safety implications of tak- ing numerous random or bad actions online, a crucial aspect of traditional RL that makes it difficult to apply in real-world problems. However, when RL is na...conference paper 2021
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Chadwell, Alix (author), Chinn, Natalie (author), Kenney, Laurence (author), Karthaus, Zoë J. (author), Mos, Daniek (author), Smit, G. (author)The Delft Self-Grasping Hand is an adjustable passive prosthesis operated using the concept of tenodesis (where opening and closing of the hand is mechanically linked to the flexion and extension of the wrist). As a purely mechanical device that does not require harnessing, the Self-Grasping Hand offers a promising alternative to current...journal article 2021
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Cuellar Lopez, J.S. (author), Plettenburg, D.H. (author), Zadpoor, A.A. (author), Breedveld, P. (author), Smit, G. (author)Various upper-limb prostheses have been designed for 3D printing but only a few of them are based on bio-inspired design principles and many anatomical details are not typically incorporated even though 3D printing offers advantages that facilitate the application of such design principles. We therefore aimed to apply a bio-inspired approach...journal article 2021
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Bodlaender, Hans L. (author), van Dobben de Bruyn, J. (author), Gijswijt, Dion (author), Smit, Harry (author)In this paper, we give a constructive proof of the fact that the treewidth of a graph is at most its divisorial gonality. The proof gives a polynomial time algorithm to construct a tree decomposition of width at most k, when an effective divisor of degree k that reaches all vertices is given. We also give a similar result for two related...journal article 2021
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Lumban-Gaol, Y. A. (author), Chen, Z. (author), Smit, M. (author), Li, X. (author), Erbaşu, M. A. (author), Verbree, E. (author), Balado Frías, J. (author), Meijers, B.M. (author), van der Vaart, C.G. (author)Point cloud data have rich semantic representations and can benefit various applications towards a digital twin. However, they are unordered and anisotropically distributed, thus being unsuitable for a typical Convolutional Neural Networks (CNN) to handle. With the advance of deep learning, several neural networks claim to have solved the...journal article 2021
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Ali, A. (author), Dodou, D. (author), Smit, G. (author), Rink, Ruben (author), Breedveld, P. (author)Positioning and stabilizing a catheter at the required location inside a vessel or the heart is a complicated task in interventional cardiology. In this review we provide a structured classification of catheter stabilization mechanisms to systematically assess their challenges during cardiac interventions. Commercially available, patented,...review 2021
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Dittli, Jan (author), Hofmann, Urs A.T. (author), Bützer, Tobias (author), Smit, G. (author), Lambercy, Olivier (author), Gassert, Roger (author)Wearable robots assist individuals with sensorimotor impairment in daily life, or support industrial workers in physically demanding tasks. In such scenarios, low mass and compact design are crucial factors for device acceptance. Remote actuation systems (RAS) have emerged as a popular approach in wearable robots to reduce perceived weight...journal article 2021
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de Ridder, M.P. (author), Smit, Pieter B. (author), van Dongeren, Ap R. (author), McCall, Robert T. (author), Nederhoff, Kees (author), Reniers, A.J.H.M. (author)A 2-layer non-hydrostatic model with improved dispersive behaviour is presented. Due to the assumption of a constant non-hydrostatic pressure distribution in the lower layer, the dispersive behaviour is improved without much additional computational time. A comparison with linear wave theory showed that this 2-layer model gives a better...journal article 2021
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Otero Rodriguez, G.J. (author), Smit, S.H.H.J. (author), Pecnik, Rene (author)Organic Rankine cycle (ORC) systems are a readily available technology to convert thermal energy from renewable- and waste heat sources into electricity. However, their thermal performance is relatively low due to the low temperature of the available heat sources, but more importantly, due to the low efficiency of the employed expander....journal article 2021
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Remmerswaal, Evan (author), Weygers, Ive (author), Smit, G. (author), Kok, M. (author)We present a novel approach to estimate the relative sensor orientation from inertial sensors placed on connected body segments. Drift in the relative orientation estimates obtained by integrating the gyroscope measurements is corrected solely by incorporating common information in the inertial sensor measurements due to the connection of the...conference paper 2021
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Smit, G. (author)Background: Current body-powered hands have very low acceptance rates. They also require high activation forces. In the past, a high acceptance rate was reported for the then-available Hüfner hand, a hand which could be controlled by relatively low activation forces. Objective: The aim of this study was to measure and quantify the mechanical...journal article 2021
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Wu, J. (author), Smit, J.J. (author), Mor, A. R. (author)In practice, High-voltage (HV) cables are occasionally exposed to impulse and superimposed transient conditions, which may initiate partial discharges (PD) temporarily. Whether such PDs persist under AC voltage after the transient conditions have vanished, is at focus in the research described in this paper. Since for cross-linked polyethylene ...journal article 2020
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Akrish, G. (author), Smit, Pieter (author), Zijlema, Marcel (author), Reniers, A.J.H.M. (author)Wave forecasting in ocean and coastal waters commonly relies on spectral models based on the spectral action balance equation. These models assume that different wave components are statistically independent and as a consequence cannot resolve wave interference due to statistical correlation between crossing waves, as may be found in, for...journal article 2020
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Gijswijt, Dion (author), Smit, Harry J. (author), van der Wegen, Marieke (author)There are several notions of gonality for graphs. The divisorial gonality dgon(G) of a graph G is the smallest degree of a divisor of positive rank in the sense of Baker-Norine. The stable gonality sgon(G) of a graph G is the minimum degree of a finite harmonic morphism from a refinement of G to a tree, as defined by Cornelissen, Kato and Kool....journal article 2020