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Sökning: (WFRF:(Arnault Y)) srt2:(2010-2014) srt2:(2012) pers:(Arguin J F.) mspu:(article)

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1.
  • Özkahraman, Özer, 1992-, et al. (författare)
  • Combining Control Barrier Functions and Behavior Trees for Multi-Agent Underwater Coverage Missions
  • 2020
  • Ingår i: Proceedings of 59th Conference on Decision and Control, 2020.
  • Konferensbidrag (refereegranskat)abstract
    • Robot missions typically involve a number of desired objectives, such as avoiding collisions, staying connected to other robots, gathering information using sensors and returning to the charging station before the battery runs out.Some of these objectives need to be taken into account at the same time, such as avoiding collisions and staying connected, while others are focused upon during different parts of the executions, such as returning to the charging station and connectivity maintenance.In this paper, we show how Control Barrier Functions(CBFs) and Behavior Trees(BTs) can be combined in a principled manner to achieve both types of task compositions, with performance guarantees in terms of mission completion. We illustrate our method with a simulated underwater coverage mission.
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  • Aad, G., et al. (författare)
  • 2012
  • swepub:Mat__t (refereegranskat)
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  • Özeren, Hüsamettin Deniz, et al. (författare)
  • Starch/Alkane Diol Materials: Unexpected Ultraporous Surfaces, Near-Isoporous Cores, and Films Moving on Water
  • 2020
  • Ingår i: ACS Omega. - : American Chemical Society (ACS). - 2470-1343. ; 5:44, s. 28863-28869
  • Tidskriftsartikel (refereegranskat)abstract
    • The aim of this study was to find alternative starch plasticizers to glycerol that yielded a less tacky material in high-moisture conditions without leading to starch crystallization. A range of glycerol films containing different potential plasticizers (linear alkane diols) were therefore produced, and it was shown that 1,3-propanediol, in combination with glycerol, was a possible solution to the problem. Several additional interesting features of the starch films were however also revealed. The larger diols, instead of showing plasticizing features, yielded a variety of unexpected structures and film properties. Films with 1,6-hexanediol and 1,7-heptanediol showed an ultraporous film surface and near-isoporous core. The most striking feature was that starch films with these two diols moved/rotated over the surface when placed on water, with no other stimulus than the interaction with water. Films with 1,8-octanediol and 1,10-decanediol did not show these features, but there was clear evidence of a structure with phase-separated crystallized diol in a starch matrix, as observed in high-resolution scanning electron microscopy (SEM) images.
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  • Özdogan, Özgecan, 1992-, et al. (författare)
  • Using Intelligent Reflecting Surfaces for Rank Improvement in MIMO Communications
  • 2020
  • Ingår i: ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). - : IEEE. - 9781509066315 - 9781509066322 ; , s. 9160-9164
  • Konferensbidrag (refereegranskat)abstract
    • An intelligent reflecting surface (IRS), consisting of reconfigurable metamaterials, can be used to partially control the radio environment and thereby bring new features to wireless communications. Previous works on IRS have particularly studied the range extension use case and under what circumstances the new technology can beat relays. In this paper, we study another use case that might have a larger impact on the channel capacity: rank improvement. One of the classical bottlenecks of point-to-point MIMO communications is that the capacity gains provided by spatial multiplexing are only large at high SNR, and high SNR channels are mainly appearing in line-of-sight (LoS) scenarios where the channel matrix has low rank and therefore does not support spatial multiplexing. We demonstrate how an IRS can be used and optimized in such scenarios to increase the rank of the channel matrix, leading to substantial capacity gains.
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  • Aad, G., et al. (författare)
  • 2012
  • swepub:Mat__t (refereegranskat)
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