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Kübler, Johanne (author), Sekwenz, M.T. (author), Rachinger, Felicitas (author), König, Anna (author), Gsenger, Rita (author), Pirkova, Eliska (author), Kettemann, Matthias C. (author), Wagner, Ben (author), Krennerich, Michael (author), Ferro, Carolina (author)Safeguarding democratic elections is hard. Social media plays a vital role in the discourse around elections and during electoral campaigns. The following article provides an analysis of the ‘systemic electoral risks’ created by Twitter and Facebook and the mitigation strategies employed by the platforms. It is based on the 2020 proposal by the...conference paper 2023
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Ofe, H.A. (author), de Reuver, G.A. (author), Janssen, M.F.W.H.A. (author), Nederstigt, Bouke (author)Managers increasingly seek ways to explore insights from data for business improvements and innovation. Data Analytics (DA) platforms hold promise for businesses, especially small businesses that cannot afford tailor-made proprietary analytics services. DA platforms offer generic analytics features to a pool of businesses, saving costs and...conference paper 2023
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Canbaloğlu, Gülay (author), Treur, J. (author), Wiewiora, Anna (author)This paper addresses formalisation and computational modelling of context-sensitive control over multilevel organisational learning and in particular the role of the leadership style in influencing feed forward learning flows. It addresses a realistic case study with focus on the role of managers for control of multilevel organisational learning...conference paper 2023
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Sánchez Gómez, S. (author), Tsetas, A. (author), Tsouvalas, A. (author), Metrikine, A. (author)For offshore wind turbines (OWTs), the monopile comprises the most common type of foundation and vibratory driving is one of the main techniques for monopile installation (and decommissioning). In practice, prior to pile installation, a pile driving analysis is performed to select the appropriate installation device and the relevant settings....conference paper 2023
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Hoffstädt, J.P. (author), Jarquin Laguna, A. (author), Fahlbeck, J. (author), Nilsson, H. (author)To tackle the growing demand for grid-scale energy storage, the ALPHEUS project proposes a novel low-head pumped hydro storage system aimed for coastal application in countries where the topography does not allow for traditional high-head storage. This system consists of a reversible pump-turbine technology with two contra-rotating runners...conference paper 2023
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Pagella, G. (author), Mirra, M. (author), Ravenshorst, G.J.P. (author), van de Kuilen, J.W.G. (author)This work investigated the influence of knots on the compression strength of wooden foundation piles. The study involved 110 pile segments sawn from 18 spruce and 9 pine piles with a mean diameter of approximately 200 mm, and moisture contents above fiber saturation. The mechanical properties were determined performing both full-scale...conference paper 2023
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Feng, Z. (author), Ferrari, Riccardo M.G. (author), van Wingerden, J.W. (author), Liu, Y. (author)Wind turbines may experience local weather perturbation, which is not taken into account by the commonly-used wind turbine simulation packages. Without this information, it is extremely challenging to evaluate the controller performance with regard to the effect of the variation of local atmospheric conditions. On the other side, it is too...conference paper 2023
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Yan, R. (author), El Bamby, H. (author), Veljkovic, M. (author)Welded joints are wildly used in the construction sector for fabrication of steel and aluminium structures. A welded joint is traditionally divided into three regions: The Base Material (BM), the Heat-Affected Zone (HAZ), and the Weld Material (WM). The mechanical behaviour of each region varies depending on properties of BM, FM and welding...conference paper 2023
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Novgorodcev Junior, André Reinaldo (author), Jarquin Laguna, A. (author)Subsea buoyancy gravity energy storage systems (SBGESS) could take advantage of large water depth to store energy in the form of potential energy. In the proposed system, drum hoists mounted on a semisubmerged support structure simultaneously lift concrete cylinders with hundreds of tonnes and lower floaters with equivalent buoyancy force,...conference paper 2023
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Chaudhary, Shivam (author), Prasad Miyapuram, Krishna (author), Lomas, J.D. (author)Entrainment is a phenomenon of phase or temporal matching of one system with that of another system. Human neural activity has been shown to resonate with external auditory stimuli. When we enjoy a piece of music, there is a resonance of brain responses with auditory signals. The crux of music cognition is based on this resonance of musical...conference paper 2023
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Saez Ortuño, M.A. (author), Yin, F. (author), Gangoli Rao, A. (author), Vos, Roelof (author), Proesmans, P. (author)As climate change aggravates, the aviation sector strives to minimize its climate footprint. To this end, international organizations, such as ICAO and ACARE, are promoting mitigation measures including novel technologies, operations, and energy carriers to reduce aircraft emissions significantly. Hydrogen (H2) as an alternative fuel has the...conference paper 2023
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Zoppini, G. (author), Sequeira, A.D. (author), Michelis, Theodorus (author), Ragni, D. (author), Kotsonis, M. (author)The present work details the steady and unsteady flow topology in the vicinity of an array of periodically spaced super-critical (i.e. causing flow tripping) discrete roughness elements (DRE) applied in a swept wing boundary layer. The stationary flow field is acquired by means of high-magnification dual-pulse tomographic particle tracking...conference paper 2023
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Bouwman, F. (author), Stroosma, O. (author), in 't Veld, A.C. (author), Mulder, Max (author)Preventing Loss of Control In-flight (LOC-I) in commercial and general aviation is an active research area with numerous proposed solutions. One of these solutions aims to prevent lateral LOC-I, a special type of LOC-I, by presenting a roll-performance based minimum lateral control speed to the pilot in roll-limited situations, such as single...conference paper 2023
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Joosten, S.K.B. (author), Stroosma, O. (author), Vos, Roelof (author), Mulder, Max (author)Flying wings are known for their limited lateral-directional stability and handling qualities. This study aims at assessing the lateral-directional handling qualities of a conceptual flying wing aircraft currently in development at TU Delft, the Flying-V, in a moving-base flight simulator. It focuses on two aspects: First assess the lateral...conference paper 2023
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van Beers, J.J. (author), de Visser, C.C. (author)Ensuring the reliability and validity of data-driven quadrotor model predictions is essential for their accepted and practical use. This is especially true for grey- and black-box models wherein the mapping of inputs to predictions is not transparent and subsequent reliability notoriously difficult to ascertain. Nonetheless, such techniques are...conference paper 2023
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Carrillo Córcoles, X. (author), De Breuker, R. (author), Sodja, J. (author)Previous numerical and experimental studies have shown the load alleviation capabilities of the flared folding wingtip. However, they have also shown the complex dynamics of the system and the limitations in the results obtained by modeling such an aeroelastic system using linear models, which cannot capture the effects of the large wingtip...conference paper 2023
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Bonnin, V.O. (author), Hoogreef, M.F.M. (author), de Vries, R. (author)The impact of the ICAO code C gate span limit is assessed on the sizing of a serial Hybrid Electric Aircraft (HEA) of increasing Degree of Hybridization (DoH). For a set of Top Level Aircraft Requirements (TLARs) similar to the ATR-42, it is shown that the increase in MTOM due to the presence of the battery is such that only a maximum DoH under...conference paper 2023
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Rahman, H. (author), De Breuker, R. (author), Castro, Saullo G.P. (author)In this paper, an innovative design methodology is proposed to simultaneously optimize the size, layout, and number of stiffeners of a stiffened panel using a gradient-based optimizer. In the proposed method, CAD-based parameterization is used to parameterize the layout of the stiffeners. The location and orientation of each stiffener are...conference paper 2023
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Georgopoulos, Panagiotis (author), Sodja, J. (author), De Breuker, R. (author)In this paper, an innovative design methodology is proposed to simultaneously optimize the size, layout, and number of stiffeners of a stiffened panel using a gradient-based optimizer. In the proposed method, CAD-based parameterization is used to parameterize the layout of the stiffeners. The location and orientation of each stiffener are...conference paper 2023
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Torelli, R. (author), Stroosma, O. (author), Vos, Roelof (author), Mulder, Max (author)An improved understanding of pilot’s control behavior adaptations in response to sudden changes in the vehicle dynamics is essential for realizing adaptive support systems that remain effective when task characteristics suddenly change. In this paper, we replicate, extend, and validate the ‘adaptive pilot model’ proposed by Hess to verify its...conference paper 2023