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Rhee, Jee Heon (author), Schermer, Brian (author), Han, Gisung (author), Park, S.Y. (author), Lee, Kyung Hoon (author)This study investigates the effects of natural exposure in an indoor environment on restorative quality and cognitive ability. Thirty participants were shown nature at three different indoor sites: baseline, indoor (some vegetation), and semi-indoor (a large amount of vegetation and view to sky) for five minutes. After viewing, they completed...journal article 2023
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Kim, Jae Young (author), Savolainen, Tuomas (author), Voitsik, Petr (author), Kravchenko, Evgeniya V. (author), Lisakov, Mikhail M. (author), Kovalev, Yuri Y. (author), Müller, Hendrik (author), Gurvits, L. (author), Lee, S. (author)We present results from the first 22 GHz space very long baseline interferometric (VLBI) imaging observations of M87 by RadioAstron. As a part of the Nearby AGN Key Science Program, the source was observed in 2014 February at 22 GHz with 21 ground stations, reaching projected (u, v) spacings up to ∼11 Gλ. The imaging experiment was...journal article 2023
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Baglioni, G. (author), Siskins, M. (author), Houmes, M.J.A. (author), Lee, M. (author), Shin, D. (author), Mañas Valero, S. (author), Coronado, Eugenio (author), Blanter, Y.M. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author)Magnetostrictive coupling has recently attracted interest as a sensitive method for studying magnetism in two-dimensional (2D) materials by mechanical means. However, its application in high-frequency magnetic actuators and transducers requires rapid modulation of the magnetic order, which is difficult to achieve with external magnets,...journal article 2023
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Liu, Hanqing (author), Lee, M. (author), Siskins, M. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author), Verbiest, G.J. (author)Heat transport by acoustic phonons in two-dimensional (2D) materials is fundamentally different from that in 3D crystals because the out-of-plane phonons propagate in a unique way that strongly depends on tension and bending rigidity. Here, using optomechanical techniques, we experimentally demonstrate that the heat transport time in...journal article 2023
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Tao, Lei (author), Khramenkova, E. (author), Lee, Insu (author), Ikuno, Takaaki (author), Khare, Rachit (author), Jentys, Andreas (author), Fulton, John L. (author), Kolganov, A.A. (author), Pidko, E.A. (author), Sanchez-Sanchez, Maricruz (author), Lercher, Johannes A. (author)The stoichiometric conversion of methane to methanol by Cu-exchanged zeolites can be brought to highest yields by the presence of extraframework Al and high CH<sub>4</sub> chemical potentials. Combining theory and experiments, the differences in chemical reactivity of monometallic Cu-oxo and bimetallic Cu-Al-oxo nanoclusters stabilized in...journal article 2023
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Mai, Zhijian (author), Cao, Nengjie (author), Cheng, Erzhuo (author), Zeng, Zhiwen (author), Feng, Yancong (author), Wang, Yao (author), French, P.J. (author), Lee, Yi Kuen (author), Yang, Haihong (author)To develop multifunctional small-molecule prodrugs is highly desirable for cancer treatment but remains challenging in intrinsic traceability. As an acid-cleavable linkage, a Schiff bases benefiting from its distinctive fluorescence quenching ability was selected to prepare a small-molecule prodrug with cancer-targeted and self-indicating. In...journal article 2023
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Lee, Minu (author), Mata-Falcón, Jaime (author), Popescu, M.A. (author), Kaufmann, Walter (author)Thin-walled textile-reinforced concrete beams have recently emerged as a promising approach for material-efficient design. However, the increased complexity of the formwork is a major challenge in implementing such elements for broader use in the construction industry. This study presents a novel type of stay-in-place flexible formworks with...journal article 2023
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Lee, Seok Bong (author), Wengrove, Meagan E. (author), de Schipper, M.A. (author), Hopkins, Julia (author), Kleinhans, Maarten G. (author), Ruessink, Gerben (author)We investigate pathways of sediment diffusion for a Gaussian-shaped sand mound subjected to monochromatic waves. Our unique results nearly close the sediment budget by quantifying each of the sediment transport processes responsible for mound diffusion associated with sediment flux due to slope driven transport and ripple migration. Downslope...journal article 2023
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Tang, Tie Qiao (author), Nicolas, Alexandre (author), Lee, Seungjae (author), Daamen, W. (author), Song, Ziqi (author)In the study of pedestrian dynamics, the consideration of group behaviours is essential, as group interaction within crowds is a common phenomenon and significantly influences pedestrian behaviours. This special issue highlights the importance of pedestrian group behaviours and examines the subject using a wide range of methods, such as...contribution to periodical 2023
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Lee, J. (author), Mitici, M.A. (author), Blom, H.A.P. (author), Bieber, Pierre (author), Freeman, Floris (author)The increasing use of on-board sensor monitoring and data-driven algorithms has stimulated the recent shift to data-driven predictive maintenance for aircraft. This paper discusses emerging challenges for data-driven predictive aircraft maintenance. We identify new hazards associated with the introduction of data-driven technologies into...journal article 2023
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Tabone, W. (author), Happee, R. (author), García, Jorge (author), Lee, Yee Mun (author), Lupetti, M.L. (author), Merat, Natasha (author), de Winter, J.C.F. (author)Augmented Reality (AR) technology could be utilised to assist pedestrians in navigating safely through traffic. However, whether potential users would understand and use such AR solutions is currently unknown. Nine novel AR interfaces for pedestrian-vehicle communication, previously developed using an experience-based design method, were...journal article 2023
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Shin, D. (author), Kim, Hakseong (author), Kim, S.H. (author), Cheong, Hyeonsik (author), Steeneken, P.G. (author), Joo, C. (author), Lee, Sang Wook (author)The inherent properties of 2D materials—light mass, high out-of-plane flexibility, and large surface area—promise great potential for precise and accurate nanomechanical mass sensing, but their application is often hampered by surface contamination. Here we demonstrate a tri-layer graphene nanomechanical resonant mass sensor with sub-attogram...journal article 2023
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Park, S.Y. (author), Newton, C.E.L. (author), Lee, Rachel (author)The sudden adoption of working from home (WFH) during the COVID-19 pandemic has required the reconfiguration of home spaces to fit space for remote work into existing spaces already filled with other domestic functions. This resulted in blurring of home and work boundaries, the potential lack of space for telecommuting from home, and...journal article 2023
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Nordhoff, S. (author), Lee, John D. (author), Calvert, S.C. (author), Berge, S.H. (author), Hagenzieker, Marjan (author), Happee, R. (author)Tesla's Full Self-Driving Beta (FSD) program introduces technology that extends the operational design domain of standard Autopilot from highways to urban roads. This research conducted 103 in-depth semi-structured interviews with users of Tesla's FSD Beta and standard Autopilot to evaluate the impact on user behavior and perception. It was...journal article 2023
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Lee, J. (author)Current aircraft maintenance ensures safe and reliable flight operations based on inspections repeated at fixed time intervals. The time interval between inspections is often much shorter than the average life of aircraft components, in an effort to timely detect potential failures. While this approach successfully prevents most potential...doctoral thesis 2022
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Lee, J. (author), Mitici, M.A. (author), Geng, S. (author), Yang, M. (author)When designing the maintenance of multi-component aircraft systems, we consider parameters such as safety margins (used when component replacements are scheduled), and reliability thresholds (used to define data-driven Remaining-Useful-Life prognostics of components). We propose Gaussian process learning and novel adaptive sampling techniques to...conference paper 2022
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Lee, J. (author), Mitici, M.A. (author)The increasing availability of sensor monitoring data has stimulated the development of Remaining-Useful-Life (RUL) prognostics and maintenance planning models. However, existing studies focus either on RUL prognostics only, or propose maintenance planning based on simple assumptions about degradation trends. We propose a framework to integrate...journal article 2022
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Lee, J. (author), de Pater, I.I. (author), Boekweit, S.A. (author), Mitici, M.A. (author)Several studies have proposed Remaining-Useful-Life (RUL) prognostics for aircraft components in the last years. However, few studies focus on integrating these RUL prognostics into maintenance planning frameworks. This paper proposes an optimization model for opportunistic maintenance scheduling of aircraft components that integrates RUL...conference paper 2022
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Lee, J. (author), Theuwissen, A.J.P.A.M. (author)A column-parallel 10-bit SAR ADC for high-speed image sensors has been implemented. A fast offset calibration technique using memory is proposed to compensate for the offset mismatch, accompanied by an ADC designed for a narrow space the size of a single column pitch. The memory accumulates the variation of the offset to track the offset...journal article 2022
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Tabone, W. (author), Happee, R. (author), García De Pedro, Jorge (author), Lee, Yee Mun (author), Lupetti, M.L. (author), Merat, Natasha (author), de Winter, J.C.F. (author)Nine AR interfaces designed using an experience- based, and theoretically informed design approach, were presented in an online questionnaire for user evaluation.<br/>Statistical analysis of presented measures, and the computation of an overall composite score revealed a preference towards traditional and familiar traffic elements.poster 2022