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Träfflista för sökning "LAR1:kth srt2:(2020-2022)"

Sökning: LAR1:kth > (2020-2022)

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1.
  • 58,105 Irish-style double jigs
  • 2021
  • Konstnärligt arbete (swepub:mat_score_t)abstract
    • These 58,105 tunes come from a collection of 100,001 generated by the folk-rnn (v2) model trained on tens of thousands of transcriptions of Irish traditional dance music. This subset are tunes approved by an artificial critic according to how well they exemplify characteristics of the 365 double jigs in O’Neill’s “1001” (1907) – in reference to a few rough measures. Each tune is numbered in the order of its generation by folk-rnn (v2). Two values accompanying each tune denote its “distance” from the double jigs in O’Neill’s “1001”, and the greatest number of quavers of 24 matching the double jigs in O’Neill’s “1001”. More information about this critic and these tunes can be found in: B.L.T. Sturm, “An Artificial Critic of Irish Double Jigs”, in Proc. AI Music Creativity Conference, Graz, 2021. 
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  • A. Mouris, Boules, et al. (författare)
  • Multi-tone Signal Optimization for Wireless Power Transfer in the Presence of Wireless Communication Links
  • 2020
  • Ingår i: IEEE Transactions on Wireless Communications. - : Institute of Electrical and Electronics Engineers (IEEE). - 1536-1276 .- 1558-2248. ; 19:5, s. 3575-3590
  • Tidskriftsartikel (refereegranskat)abstract
    • In this paper, we study optimization of multi-tone signals for wireless power transfer (WPT) systems. We investigate different non-linear energy harvesting models. Two of them are adopted to optimize the multi-tone signal according to the channel state information available at the transmitter. We show that a second-order polynomial curve-fitting model can be utilized to optimize the multi-tone signal for any RF energy harvester design. We consider both single-antenna and multi-antenna WPT systems. In-band co-existing communication links are also considered in this work by imposing a constraint on the received power at the nearby information receiver to prevent its RF front end from saturation. We emphasize the importance of imposing such constraint by explaining how inter-modulation products, due to saturation, can cause high interference at the information receiver in the case of multi-tone signals. The multi-tone optimization problem is formulated as a non-convex linearly constrained quadratic program. Two globally optimal solution approaches using mixed-integer linear programming and finite branch-and-bound techniques are proposed to solve the problem. The achieved improvement resulting from applying both solution methods to the multi-tone optimization problem is highlighted through simulations and comparisons with other solutions existing in the literature.
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4.
  • A U-turn to the Future: Sustainable Urban Mobility since 1850
  • 2020
  • Samlingsverk (redaktörskap) (refereegranskat)abstract
    • From local bike-sharing initiatives to overhauls of transport infrastructure, mobility is one of the most important areas in which modern cities are trying to realize a more sustainable future. Yet even as politicians and planners look ahead, there remain critical insights to be gleaned from the history of urban mobility and the unsustainable practices that still impact our everyday lives. United by their pursuit of a “usable past,” the studies in this interdisciplinary collection consider the ecological, social, and economic aspects of urban mobility, showing how historical inquiry can make both conceptual and practical contributions to the projects of sustainability and urban renewal.
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  • Aaboud, M., et al. (författare)
  • Search for a scalar partner of the top quark in the all-hadronic t(t)over-bar plus missing transverse momentum final state at root s=13 TeV with the ATLAS detector
  • 2020
  • Ingår i: European Physical Journal C. - : Springer Nature. - 1434-6044 .- 1434-6052. ; 80:8
  • Tidskriftsartikel (refereegranskat)abstract
    • A search for direct pair production of scalar partners of the top quark (top squarks or scalar third-generation up-type leptoquarks) in the all-hadronic t (t) over bar plus missing transverse momentum final state is presented. The analysis of 139 fb(-1) of root s = 13 TeV proton-proton collision data collected using the ATLAS detector at the LHC yields no significant excess over the Standard Model background expectation. To interpret the results, a supersymmetric model is used where the top squark decays via (t) over tilde -> t(*) (chi) over tilde (0)(1), with t(*) denoting an on-shell (off-shell) top quark and (chi) over tilde (0)(1) the lightest neutralino. Three specific event selections are optimised for the following scenarios. In the scenario where m((t) over tilde) > m(t) + m((chi) over tilde 10), top squark masses are excluded in the range 400-1250 GeV for (chi) over tilde (0)(1) masses below 200 GeV at 95% confidence level. In the situation where m((t) over tilde) similar to m(t) + m((chi) over tilde 10), top squarkmasses in the range 300-630 GeV are excluded, while in the case where m((t) over tilde) < m(W) + m(b) + m(<(chi)over tilde>10) (with m((t) over tilde) - m((chi) over tilde 10) >= 5 GeV), considered for the first time in an ATLAS all-hadronic search, top squark masses in the range 300-660 GeV are excluded. Limits are also set for scalar third-generation up-type leptoquarks, excluding leptoquarks with masses below 1240 GeV when considering only leptoquark decays into a top quark and a neutrino.
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  • Aad, G., et al. (författare)
  • A detailed map of Higgs boson interactions by the ATLAS experiment ten years after the discovery
  • 2022
  • Ingår i: Nature. - : Nature Research. - 0028-0836 .- 1476-4687. ; 607:7917, s. 52-59
  • Tidskriftsartikel (refereegranskat)abstract
    • The standard model of particle physics1–4 describes the known fundamental particles and forces that make up our Universe, with the exception of gravity. One of the central features of the standard model is a field that permeates all of space and interacts with fundamental particles5–9. The quantum excitation of this field, known as the Higgs field, manifests itself as the Higgs boson, the only fundamental particle with no spin. In 2012, a particle with properties consistent with the Higgs boson of the standard model was observed by the ATLAS and CMS experiments at the Large Hadron Collider at CERN10,11. Since then, more than 30 times as many Higgs bosons have been recorded by the ATLAS experiment, enabling much more precise measurements and new tests of the theory. Here, on the basis of this larger dataset, we combine an unprecedented number of production and decay processes of the Higgs boson to scrutinize its interactions with elementary particles. Interactions with gluons, photons, and W and Z bosons—the carriers of the strong, electromagnetic and weak forces—are studied in detail. Interactions with three third-generation matter particles (bottom (b) and top (t) quarks, and tau leptons (τ)) are well measured and indications of interactions with a second-generation particle (muons, μ) are emerging. These tests reveal that the Higgs boson discovered ten years ago is remarkably consistent with the predictions of the theory and provide stringent constraints on many models of new phenomena beyond the standard model.
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