325 research outputs found

    Comparing performance and situation awareness in USAR unit tasks in a virtual and real environment

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    A convenient way to test Urban Search And Rescue (USAR) robots would be in virtual environments (VEs). Evaluations in VEs are generally accepted as alternative for real scenarios. There are obvious differences between operation in a real and virtual environment. Nonetheless, the current experiment showed no significant differences in situation awareness (SA) and performance during several elementary tasks (e.g. slalom) between a virtual world and a previous experiment in reality (Mioch, Smets, & Neerincx, 2012). Only small dependencies between the unit tasks were found. The effect of individual differences (like gender, km driven per year, and gaming experience), were significant for certain elementary tasks. Testing robots in virtual environments could still be useful even if differences between VE and reality exist, since comparisons of different conditions in VE seems to have the same results as the same comparison in the field (Bishop & Rohrmann, 2003; Van Diggelen, Looije, Mioch, Neerincx, & Smets, 2012).Intelligent SystemsElectrical Engineering, Mathematics and Computer Scienc

    Regarding: Nicotinic acetylcholine receptors α7 and α9 modify tobacco smoke risk for multiple sclerosis.

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    This is a author manuscript of an article accepted for publication in Multiple Sclerosis Journal. Version of record is available online at Jacobs BM, Smets I, Giovannoni G, Noyce A, Jokubaitis V, Dobson R. Regarding: Nicotinic acetylcholine receptors α7 and α9 modify tobacco smoke risk for multiple sclerosis. Multiple Sclerosis Journal. December 2020. doi:10.1177/1352458520969941. Copyright (c) 2020. The Authors. doi:10.1177/135245852096994

    The role of oxide interlayers in back reflector configurations for amorphous silicon solar cells

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    Thin oxide interlayers are commonly added to the back reflector of thin-film silicon solar cells to increase their current. To gain more insight in the enhancement mechanism, we tested different back reflector designs consisting of aluminium-doped zinc oxide (ZnO:Al) and/or hydrogenated silicon oxide (SiOx:H) interlayers with different metals (silver, aluminium, and chromium) in standard p-i-n a-Si:H solar cells. We use a unique inverse modeling approach to show that in most back reflectors the internal metal reflectance is lower than expected theoretically. However, the metal reflectance is increased by the addition of an oxide interlayer. Our experiments demonstrate that SiOx:H forms an interesting alternative interlayer because unlike the more commonly used ZnO:Al it can be deposited by plasma-enhanced chemical vapour deposition and it does not reduce the fill factor. The largest efficiency enhancement is obtained with a double interlayer of SiOx:H and ZnO:Al.Electrical Sustainable EnergyElectrical Engineering, Mathematics and Computer Scienc

    An encoding framework for binarized images using hyperdimensional computing

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    The author(s) declare financial support was received for the research, authorship, and/or publication of this article. This work was supported by the Flemish Government under the "Onderzoeksprogramma Artificiele Intelligentie (AI) Vlaanderen" program

    Enhancing x-ray baggage inspection by interactive viewpoint selection

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    Industrial Design Engineerin
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