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Jumelet, Daan (author), van Gent, M.R.A. (author), Hofland, Bas (author), Kuiper, C. (author)Physical model tests have been performed to study static stability of rock-armoured mild slopes. Current stability design formulae for steeper rock-armoured slopes focus on plunging and surging waves. Slopes of 1:6 and milder usually have more spilling breakers which decreases the load. Also, on mild slopes displaced rocks more often remain...journal article 2024
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Bouwmeester, J. (author), Kuiper, J.M. (author)This paper shows the roadmap of the development of a deployable space telescope at Delft University of Technology and explores its applications, key innovations and the design of a small demonstrator. Deployable space telescopes allow for smaller stowed dimensions during launch and it is expected that increasing demand for Earth observation at a...conference paper 2023
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Langeveld, J.G. (author), Post, Johan (author), Makris, K. (author), Palsma, Bert (author), Kuiper, Melanie (author), Liefting, Erik (author)The ecological state of receiving water bodies can be significantly influenced by organic micropollutants that are emitted via stormwater runoff. Reported efforts to quantify the emission of micropollutants mainly focus on sampling at combined sewer overflows and storm sewer outfalls, which can be challenging. An alternative method, called...journal article 2023
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Knowing About Knowing: An Illusion of Human Competence Can Hinder Appropriate Reliance on AI SystemsHe, G. (author), Kuiper, L.A. (author), Gadiraju, Ujwal (author)The dazzling promises of AI systems to augment humans in various tasks hinge on whether humans can appropriately rely on them. Recent research has shown that appropriate reliance is the key to achieving complementary team performance in AI-assisted decision making. This paper addresses an under-explored problem of whether the Dunning-Kruger...conference paper 2023
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Kuiper, L.M. (author), Polinder-Bos, Harmke A. (author), Bizzarri, D. (author), Vojinovic, Dina (author), Vallerga, Costanza L. (author), Reinders, M.J.T. (author), Slagboom, P. Eline (author), van den Akker, E.B. (author)Biological age captures a person's age-related risk of unfavorable outcomes using biophysiological information. Multivariate biological age measures include frailty scores and molecular biomarkers. These measures are often studied in isolation, but here we present a large-scale study comparing them. In 2 prospective cohorts (n = 3 222), we...journal article 2023
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Badas Aldecocea, M. (author), Piron, P. (author), Bouwmeester, J. (author), Loicq, J.J.D. (author), Kuiper, J.M. (author), Gill, E.K.A. (author)Growing interest in free-space optical communication, due to the high bandwidth and security provided by these links, has generated the necessity of designing high-performance satellite terminals. In order to develop these terminals, the opto-thermo-mechanical phenomena that appear in the space environment and their effect on optical...review 2023
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Villalba, Víctor (author), van Es, Johannes (author), Kuiper, J.M. (author), Gill, E.K.A. (author)Piezoelectric actuators are a very attractive technology for active optics mechanisms in space applications due to their very high precision and reliability. However, self-heating of these actuators may be limit their use in space or under high loads, due to the limited ability to evacuate heat. Test procedures that reproduce the operational...journal article 2022
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Rijlaarsdam, D.D.W. (author), Zwick, Martin (author), Kuiper, J.M. (author)Pose estimation in robotics is often achieved using images from known and purposefully applied markers or fiducials taken by a monocular camera. This low-cost system architecture can provide accurate and precise pose estimation measurements. However, to prevent the restriction of robotic movement and occlusions of features, the fiducial markers...journal article 2022
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van der Stok-Nienhuis, Janneke (author), Kuiper, Elisabeth (author), Beentjes, Tonny (author), Joosten, Ineke (author), van Eijck, L. (author), Zhou, Z. (author), van Bommel, Maarten (author)A rare find of a high-status 17th century oval box, retrieved from a shipwreck, provided a unique opportunity to research the construction and finishing layers of an object that is untouched for 350 years. This case study was used to demonstrate the extent of data that can be gained from analytical techniques prior to conservation. The...journal article 2021
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Edixhoven, Tom (author), Qiu, S. (author), Kuiper, Lucie (author), Dikken, Olivier (author), Smitskamp, Gwennan (author), Gadiraju, Ujwal (author)In popular crowdsourcing marketplaces like Amazon Mechanical Turk, crowd workers complete tasks posted by requesters in return for monetary rewards. Task requesters are solely responsible for deciding whether to accept or reject submitted work. Rejecting work can directly affect the monetary reward of corresponding workers, and indirectly...conference paper 2021
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Saathof, R. (author), Speretta, S. (author), Guo, J. (author), Kuiper, J.M. (author), Gill, E.K.A. (author)Laser satellite communications provides an attractive application for optical communications. It provides more bandwidth with improved security at potentially a lower cost due to reduced size weight and power (SWAP) and reduced license cost compared to radio frequencies (RF) communications. These advantages have been recognized for years and...abstract 2021
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Kuiper, J.M. (author), Dolkens, D. (author)A 6U CubeSat for Earth observation in 230–350 km orbits with sub-meter resolution is presented. The proposed Stable and Highly Accurate Pointing Earth-Imager (SHAPE) system’s attitude determination and control system (ADCS) is composed of a single momentum bias wheel with magnetic bearings at rotational speeds of 6000–7000 rpm and refined...journal article 2020
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Villalba, Víctor (author), Kuiper, J.M. (author), Gill, E.K.A. (author)Deployable optics promise a revolution in the capability of observing the universe by delivering drastically reduced mass and volume needs for a desired level of performance compared to their conventional counterparts. However, this places new demands on the mechanical and thermal designs of new telescopes, essentially trading mass and volume...review 2020
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Vergoossen, Tom (author), Loarte, Sergio (author), Bedington, Robert (author), Kuiper, J.M. (author), Ling, Alexander (author)Quantum key distribution from satellites becomes particularly valuable when it can be used on a large network and on-demand to provide a symmetric encryption key to any two nodes. A constellation model is described which enables QKD-derived encryption keys to be established between any two ground stations with low latency. This is achieved...journal article 2020
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Noorbergen, Lars J. (author), Turtu, Antonio (author), Kuiper, Klaudia F. (author), Kasse, Cornelis (author), van Ginneken, Sverre (author), Dekkers, Mark J. (author), Krijgsman, Wout (author), Abels, H.A. (author), Hilgen, Frederik J. (author)Aggradation and fluvial incision controlled by downstream base-level changes at timescales of 10 to 500 kyr is incorporated in classic sequence stratigraphic models. However, upstream climate control on sediment supply and discharge variability causes fluvial incision and aggradation as well. Orbital forcing often regulates climate change at...journal article 2020
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Kuiper, R.J. (author)Remotely controlled subsea vehicles are frequently used for oil and gas applications. A potential future application requiring remote controlled vehicles is deep-sea mining. At the envisioned water depths beyond 1500m, rare minerals are accessible without deep excavation. However, the extreme hyperbaric conditions (i.e. high pressure), limited...doctoral thesis 2019
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Kuiper, J.M. (author), Dolkens, D. (author), Villalba, Víctor (author)The following research topics, running at the Delft University of Technology, aim to increase the spatial resolution of Earth Observation systems: 1. Small instruments and sensor development for PocketQubes and CubeSats 2. A Stable Highly Accurate Pointing EO (SHAPE) 6U spacecraft 3. The Stratospheric balloon project Stratocruiser 4. The...abstract 2019
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Kuiper, E.J. (author), Janssen, M.F.W.H.A. (author)Tax Administrations have a huge amount of tax-related data that can be re-used for the benefit of the taxpayers, similarly to the way private banks and wealth managers use their clients’ financial information. However, usage of tax data is not trivial, as Tax Administrations have to adhere to legislation that does not allow them to compete with...journal article 2018
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Dolkens, D. (author), Kuiper, J.M. (author), Villalba, Víctor (author)The increase of spatial and temporal resolution for Earth observation (EO) is the ultimate driver for science and societal applications. However, the state-of-the-art EO missions like DigitalGlobe's Worldview-3, are very costly. Moreover, this system has a high mass of 2800 kg and limited swath width of about 15 km which limits the temporal...journal article 2018
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Oi, Daniel K.L. (author), Ling, Alex (author), Vallone, Giuseppe (author), Villoresi, Paolo (author), Greenland, Steve (author), Kerr, Emma (author), Macdonald, Malcolm (author), Weinfurter, Harald (author), Kuiper, J.M. (author), Charbon-Iwasaki-Charbon, E. (author), Ursin, Rupert (author)Quantum communication is a prime space technology application and offers near-term possibilities for long-distance quantum key distribution (QKD) and experimental tests of quantum entanglement. However, there exists considerable developmental risks and subsequent costs and time required to raise the technological readiness level of...journal article 2017