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  • Open Access English
    Authors: 
    Sirunyan, A. M.; Tumasyan, Armen; Escalante Del Valle, Alberto; Bruno, Giacomo; Ramírez García, Mateo; Sánchez Hernández, Alberto; Carrillo Moreno, Salvador; Oropeza Barrera, Cristina; Vazquez Valencia, Fabiola; Eysermans, Jan; +225 more
    Publisher: APS
    Countries: Germany, France, Switzerland
    Project: EC | AMVA4NewPhysics (675440)

    A search for resonance-like structures in the $\mathrm{B}^{0}_{\mathrm{s}}\pi^{\pm}$ invariant mass spectrum is performed using proton-proton collision data collected by the CMS experiment at the LHC at $\sqrt{s} = $ 8 TeV, corresponding to an integrated luminosity of 19.7 fb$^{-1}$. The $\mathrm{B}^{0}_{\mathrm{s}}$ mesons are reconstructed in the decay chain $\mathrm{B}^{0}_{\mathrm{s}} \rightarrow \mathrm{J}/\psi\,\phi$, with $\mathrm{J}/\psi \rightarrow \mu^+\mu^-$ and $\phi\rightarrow\mathrm{K^{+}}\mathrm{K^{-}}$. The $\mathrm{B}^{0}_{\mathrm{s}}\pi^{\pm}$ invariant mass distribution shows no statistically significant peaks for different selection requirements on the reconstructed $\mathrm{B}^{0}_{\mathrm{s}}$ and $\pi^{\pm}$ candidates. Upper limits are set on the relative production rates of the X(5568) and $\mathrm{B}^{0}_{\mathrm{s}}$ states times the branching fraction of the decay $\mathrm{X}(5568)^{\pm} \rightarrow \mathrm{B}^{0}_{\mathrm{s}} \pi^{\pm} $. In addition, upper limits are obtained as a function of the mass and the natural width of possible exotic states decaying into $\mathrm{B}^{0}_{\mathrm{s}}\pi^{\pm}$. Physical review letters 120(20), 202005 (2018). doi:10.1103/PhysRevLett.120.202005 Published by APS, College Park, Md.

  • Publication . Article . Other literature type . Research . Preprint . 2021
    Open Access English
    Authors: 
    Cole Lindsey; Ayse Polatoz; Alessandro Thea; Sinan Sagir; Soureek Mitra; Ram Krishna Dewanjee; Daniele Fasanella; Robert Hirosky; Santeri Laurila; Austin Baty; +557 more
    Countries: Belgium, Italy, Spain, Turkey, United Kingdom, Italy, Italy, Germany, France, United States ...
    Project: EC | LHCTOPVLQ (752730), EC | INSIGHTS (765710), EC | AMVA4NewPhysics (675440)

    Evidence for Higgs boson decay to a pair of muons is presented. This result combines searches in four exclusive categories targeting the production of the Higgs boson via gluon fusion, via vector boson fusion, in association with a vector boson, and in association with a top quark-antiquark pair. The analysis is performed using proton-proton collision data at s√ = 13 TeV, corresponding to an integrated luminosity of 137 fb−1, recorded by the CMS experiment at the CERN LHC. An excess of events over the back- ground expectation is observed in data with a significance of 3.0 standard deviations, where the expectation for the standard model (SM) Higgs boson with mass of 125.38 GeV is 2.5. The combination of this result with that from data recorded at s√ = 7 and 8 TeV, corresponding to integrated luminosities of 5.1 and 19.7 fb−1, respectively, increases both the expected and observed significances by 1%. The measured signal strength, relative to the SM prediction, is 1.19+0.40−0.39(stat)+0.15−0.14(syst). This result constitutes the first evidence for the decay of the Higgs boson to second generation fermions and is the most precise measurement of the Higgs boson coupling to muons reported to date. Individuals have received support from the Marie-Curie programme and the European Research Council and Horizon 2020 Grant, contract Nos. 675440, 752730, and 765710 (European Union); the Programa Estatal de Fomento de la Investigación Científica y Técnica de Excelencia María de Maeztu, grant MDM-2015-0509 and the Programa Severo Ochoa del Principado de Asturias. CMS collaboration: et al. Peer reviewed

  • Publication . Article . Preprint . Other literature type . Research . Report . 2018
    Open Access English
    Authors: 
    Ece Aşılar; Marko Dragicevic; Dietrich Liko; Jochen Schieck; Wolfgang Waltenberger; Claudia-Elisabeth Wulz; Vladimir Chekhovsky; Freya Blekman; Stefaan Tavernier; I. Van Parijs; +450 more
    Publisher: Springer
    Countries: Turkey, Switzerland, Lithuania, Finland, Spain, Italy, Germany, Belgium, Italy, Turkey ...
    Project: EC | AMVA4NewPhysics (675440)

    A search for charged Higgs boson decaying to a charm and a bottom quark ( $ {\mathrm{H}}^{+}\to \mathrm{c}\overline{\mathrm{b}} $ ) is performed using 19.7 fb$^{−1}$ of pp collision data at $ \sqrt{s}=8 $ TeV. The production mechanism investigated in this search is $ \mathrm{t}\overline{\mathrm{t}} $ pair production in which one top quark decays to a charged Higgs boson and a bottom quark and the other decays to a charged lepton, a neutrino, and a bottom quark. Charged Higgs boson decays to $ \mathrm{c}\overline{\mathrm{b}} $ are searched for, resulting in a final state containing at least four jets, a charged lepton (muon or electron), and missing transverse momentum. A kinematic fit is performed to identify the pair of jets least likely to be the bottom quarks originating from direct top quark decays and the invariant mass of this pair is used as the final observable in the search. No evidence for the presence of a charged Higgs boson is observed and upper limits at 95% confidence level of 0.8–0.5% are set on the branching fraction ℬ(t → H$^{+}$b), assuming ℬ(H$^{+}$ → $ \mathrm{c}\overline{\mathrm{b}} $ ) = 1.0 and ℬ(t → H$^{+}$b) + ℬ(t → Wb) = 1.0, for the charged Higgs boson mass range 90–150 GeV. Journal of high energy physics 1811(11), 115 (2018). doi:10.1007/JHEP11(2018)115 Published by Springer Nature, Cham

  • Open Access
    Authors: 
    Peiris, David; Thompson, Simon; Beratarrechea, Andrea; MarĂ­A CĂĄrdenas; Diez-Canseco, Francisco; Goudge, Jane; Gyamfi, Joyce; Jemima Kamano; Irazola, Vilma; Johnson, Claire; +20 more
    Publisher: Figshare
    Project: EC | GACD (661024), CIHR

    NGA 15 Assessment. Tailored Hospital-based Risk Reduction to Impede Vascular Events after Stroke (THRIVES) (NGA 15).

  • Open Access English
    Authors: 
    Penca; Jerneja;
    Publisher: Zenodo
    Project: EC | EL-CSID (693799)

    Across the policy discourses and academic literature, the popularity of the concept of “science diplomacy” has used the concept in an uncritical manner. This paper aims to understand the concept’s value-added and the implications of its use. It considers the evolution of scientific cooperation and its interaction with foreign policy in the Euro-Mediterranean region. It finds out that many of the goals currently enshrined in “science diplomacy” have already constituted the history of the Euro-Mediterranean relationships since the launch of the Euro-Mediterranean Partnership. The difference with the past is that the EU now has higher political and economic expectations of genuine scientific cooperation. However, in contrast to widening the objectives, the EU has not substantively broadened the tools it avails of. This leads us to expect that the EU’s actual policy in regional scientific cooperation might nevertheless stay the same. While the rhetoric of science diplomacy is of little use, the paper suggests some meaningful questions in the science-foreign policy nexus to replace it.

  • Publication . Other literature type . Article . Research . Preprint . 2021
    Open Access English
    Authors: 
    Fruehwirth, Rudolf; Wulz, Claudia-Elisabeth; Melo Da Costa, Eliza; BRANDAO MALBOUISSON, Helena; Tomei, Thiago; De Moraes Gregores, Eduardo; De Souza Lemos, Dener; Garcia Fuentes, Francisco Ignacio; AGRAM, Jean-Laurent; Brom, Jean-Marie; +193 more
    Publisher: North-Holland Publ.
    Countries: Belgium, Germany, Italy, Switzerland, Italy, Belgium, Belgium, Spain, France, Germany ...
    Project: EC | LHCTOPVLQ (752730), EC | INSIGHTS (765710), EC | AMVA4NewPhysics (675440)

    Measurements of the second Fourier harmonic coefficient (v2) of the azimuthal distributions of prompt and nonprompt D0 mesons produced in pp and pPb collisions are presented. Nonprompt D0 mesons come from beauty hadron decays. The data samples are collected by the CMS experiment at nucleon-nucleon center-of-mass energies of 13 and 8.16 TeV, respectively. In high multiplicity pp collisions, v2 signals for prompt charm hadrons are reported for the first time, and are found to be comparable to those for light-flavor hadron species over a transverse momentum (pT) range of 2–6 GeV. Compared at similar event multiplicities, the prompt D0 meson v2 values in pp and pPb collisions are similar in magnitude. The v2 values for open beauty hadrons are extracted for the first time via nonprompt D0 mesons in pPb collisions. For pT in the range of 2–5 GeV, the results suggest that v2 for nonprompt D0 mesons is smaller than that for prompt D0 mesons. These new measurements indicate a positive charm hadron v2 in pp collisions and suggest a mass dependence in v2 between charm and beauty hadrons in the pPb system. These results provide insights into the origin of heavy-flavor quark collectivity in small systems. Individuals have received support from the Marie-Curie program and the European Research Council and Horizon 2020 Grant, contract Nos. 675440, 752730, and 765710 (European Union); CERN; the Programa Estatal de Fomento de la Investigación Científica y Técnica de Excelencia María de Maeztu, grant MDM-2015-0509 and the Programa Severo Ochoa del Principado de Asturias. CMS Collaboration: et al. Funded by SCOAP3. Peer reviewed

  • Publication . Conference object . Research . 2018
    Restricted
    Authors: 
    M. Livesu; D. Cabiddu; M. Attene;
    Publisher: The Eurographics Association
    Country: Italy
    Project: EC | CAxMan (680448)

    Accurately simulating Additive Manufacturing (AM) processes is useful to predict printing failures and test 3D printing without wasting precious resources, both in terms of time ad material. In AM the object to be fabricated is first cut into a set of slices aligned with the build direction, and then printed, depositing or solidifying material one layer on top of the other. To guarantee accurate simulations, it is therefore necessary to encode the temporal evolution of the shape to be printed within the simulation domain. We introduce slice2mesh, to the best of our knowledge the first software capable of turning a sliced object directly into a volumetric mesh. Our tool inputs a set of slices and produces a tetrahedral mesh that endows each slice in its connectivity. An accurate representation of the simulation domain at any time during the print can therefore be easily obtained by filtering out the slices yet to be processed. slice2mesh also features a flexible mesh generation system for external supports, and allows the user to trade accuracy for simplicity by producing approximate simulation domains obtained by filtering the object in slice space. Categories and Subject Descriptors (according to ACM CCS): I.3.3 [Computer Graphics]: Picture/Image Generation-Line and curve generation Smart Tools and Apps for Graphics - Eurographics Italian Chapter Conference M. Livesu, D. Cabiddu, and M. Attene Manufacturing Objects 23 13

  • Publication . Article . Other literature type . Research . Preprint . 2020
    Open Access
    Authors: 
    Valerie Domcke; Marco Drewes; Marco Hufnagel; Michele Lucente;
    Publisher: SPRINGER
    Countries: Germany, Switzerland
    Project: EC | NewAve (638528)

    We study the type-I seesaw model with three right-handed neutrinos and Majorana masses below the pion mass. In this mass range, the model parameter space is not only strongly constrained by the requirement to explain the light neutrino masses, but also by experimental searches and cosmological considerations. In the existing literature, three disjoint regions of potentially viable parameter space have been identified. In one of them, all heavy neutrinos decay shortly before big bang nucleosynthesis. In the other two regions, one of the heavy neutrinos either decays between BBN and the CMB decoupling or is quasi-stable. We show that previously unaccounted constraints from photodisintegration of nuclei practically rule out all relevant decays that happen between BBN and the CMB decoupling. Quite remarkably, if all heavy neutrinos decay before BBN, the baryon asymmetry of the universe can be quite generically explained by low-scale leptogenesis, i.e. without further tuning in addition to what is needed to avoid experimental and cosmological constraints. This motivates searches for heavy neutrinos in pion decay experiments. Journal of high energy physics 01(1), 200 (2021). doi:10.1007/JHEP01(2021)200 Published by SISSA, [Trieste]

  • Open Access
    Authors: 
    Martos-Sitcha, Juan; Bermejo-Nogales, Azucena; Calduch-Giner, Josep; PĂŠrez-SĂĄnchez, Jaume;
    Publisher: Figshare
    Project: EC | AQUAEXCEL2020 (652831)

    Forward (F) and reverse (R) primers used for real-time PCR. (DOCX 50Â kb)

  • Open Access English
    Authors: 
    Tsitsokas, Dimitrios; Kouvelas, Anastasios; id_orcid0000-0003-4571-2530; Geroliminis, Nikolas;
    Publisher: ETH Zurich
    Country: Switzerland
    Project: EC | DIT4TraM (953783)

    Traffic-responsive signal control is a cost-effective and easy-to-implement network management strategy with high potential in improving performance in congested networks with dynamic characteristics. Max Pressure (MP) distributed controller gained significant popularity due to its theoretically proven ability of queue stabilization and throughput maximization under specific assumptions. However, its effectiveness under saturated conditions is questionable, while network-wide application is limited due to high instrumentation cost. Perimeter control (PC) based on the concept of the Macroscopic Fundamental Diagram (MFD) is a state-of-the-art aggregated strategy that regulates exchange flows between regions, in order to maintain maximum regional travel production and prevent over-saturation. Yet, homogeneity assumption is hardly realistic in congested states, thus compromising PC efficiency. In this paper, the effectiveness of network-wide, parallel application of PC and MP embedded in a two-layer control framework is assessed with mesoscopic simulation. Aiming at reducing implementation cost of MP without significant performance loss, we propose a method to identify critical nodes for partial MP deployment. A modified version of Store-and-forward paradigm incorporating finite queue and spill-back consideration is used to test different configurations of the proposed framework, for a real large-scale network, in moderately and highly congested scenarios. Results show that: (i) combined control of MP and PC outperforms separate MP and PC applications in both demand scenarios; (ii) MP control in reduced critical node sets leads to similar or even better performance compared to full-network implementation, thus allowing for significant cost reduction; iii) the proposed control schemes improve system performance even under demand fluctuations of up to 20% of mean. arXiv

Advanced search in
Research products
arrow_drop_down
Searching FieldsTerms
Any field
arrow_drop_down
includes
arrow_drop_down
Include:
1,859 Research products, page 1 of 186
  • Open Access English
    Authors: 
    Sirunyan, A. M.; Tumasyan, Armen; Escalante Del Valle, Alberto; Bruno, Giacomo; Ramírez García, Mateo; Sánchez Hernández, Alberto; Carrillo Moreno, Salvador; Oropeza Barrera, Cristina; Vazquez Valencia, Fabiola; Eysermans, Jan; +225 more
    Publisher: APS
    Countries: Germany, France, Switzerland
    Project: EC | AMVA4NewPhysics (675440)

    A search for resonance-like structures in the $\mathrm{B}^{0}_{\mathrm{s}}\pi^{\pm}$ invariant mass spectrum is performed using proton-proton collision data collected by the CMS experiment at the LHC at $\sqrt{s} = $ 8 TeV, corresponding to an integrated luminosity of 19.7 fb$^{-1}$. The $\mathrm{B}^{0}_{\mathrm{s}}$ mesons are reconstructed in the decay chain $\mathrm{B}^{0}_{\mathrm{s}} \rightarrow \mathrm{J}/\psi\,\phi$, with $\mathrm{J}/\psi \rightarrow \mu^+\mu^-$ and $\phi\rightarrow\mathrm{K^{+}}\mathrm{K^{-}}$. The $\mathrm{B}^{0}_{\mathrm{s}}\pi^{\pm}$ invariant mass distribution shows no statistically significant peaks for different selection requirements on the reconstructed $\mathrm{B}^{0}_{\mathrm{s}}$ and $\pi^{\pm}$ candidates. Upper limits are set on the relative production rates of the X(5568) and $\mathrm{B}^{0}_{\mathrm{s}}$ states times the branching fraction of the decay $\mathrm{X}(5568)^{\pm} \rightarrow \mathrm{B}^{0}_{\mathrm{s}} \pi^{\pm} $. In addition, upper limits are obtained as a function of the mass and the natural width of possible exotic states decaying into $\mathrm{B}^{0}_{\mathrm{s}}\pi^{\pm}$. Physical review letters 120(20), 202005 (2018). doi:10.1103/PhysRevLett.120.202005 Published by APS, College Park, Md.

  • Publication . Article . Other literature type . Research . Preprint . 2021
    Open Access English
    Authors: 
    Cole Lindsey; Ayse Polatoz; Alessandro Thea; Sinan Sagir; Soureek Mitra; Ram Krishna Dewanjee; Daniele Fasanella; Robert Hirosky; Santeri Laurila; Austin Baty; +557 more
    Countries: Belgium, Italy, Spain, Turkey, United Kingdom, Italy, Italy, Germany, France, United States ...
    Project: EC | LHCTOPVLQ (752730), EC | INSIGHTS (765710), EC | AMVA4NewPhysics (675440)

    Evidence for Higgs boson decay to a pair of muons is presented. This result combines searches in four exclusive categories targeting the production of the Higgs boson via gluon fusion, via vector boson fusion, in association with a vector boson, and in association with a top quark-antiquark pair. The analysis is performed using proton-proton collision data at s√ = 13 TeV, corresponding to an integrated luminosity of 137 fb−1, recorded by the CMS experiment at the CERN LHC. An excess of events over the back- ground expectation is observed in data with a significance of 3.0 standard deviations, where the expectation for the standard model (SM) Higgs boson with mass of 125.38 GeV is 2.5. The combination of this result with that from data recorded at s√ = 7 and 8 TeV, corresponding to integrated luminosities of 5.1 and 19.7 fb−1, respectively, increases both the expected and observed significances by 1%. The measured signal strength, relative to the SM prediction, is 1.19+0.40−0.39(stat)+0.15−0.14(syst). This result constitutes the first evidence for the decay of the Higgs boson to second generation fermions and is the most precise measurement of the Higgs boson coupling to muons reported to date. Individuals have received support from the Marie-Curie programme and the European Research Council and Horizon 2020 Grant, contract Nos. 675440, 752730, and 765710 (European Union); the Programa Estatal de Fomento de la Investigación Científica y Técnica de Excelencia María de Maeztu, grant MDM-2015-0509 and the Programa Severo Ochoa del Principado de Asturias. CMS collaboration: et al. Peer reviewed

  • Publication . Article . Preprint . Other literature type . Research . Report . 2018
    Open Access English
    Authors: 
    Ece Aşılar; Marko Dragicevic; Dietrich Liko; Jochen Schieck; Wolfgang Waltenberger; Claudia-Elisabeth Wulz; Vladimir Chekhovsky; Freya Blekman; Stefaan Tavernier; I. Van Parijs; +450 more
    Publisher: Springer
    Countries: Turkey, Switzerland, Lithuania, Finland, Spain, Italy, Germany, Belgium, Italy, Turkey ...
    Project: EC | AMVA4NewPhysics (675440)

    A search for charged Higgs boson decaying to a charm and a bottom quark ( $ {\mathrm{H}}^{+}\to \mathrm{c}\overline{\mathrm{b}} $ ) is performed using 19.7 fb$^{−1}$ of pp collision data at $ \sqrt{s}=8 $ TeV. The production mechanism investigated in this search is $ \mathrm{t}\overline{\mathrm{t}} $ pair production in which one top quark decays to a charged Higgs boson and a bottom quark and the other decays to a charged lepton, a neutrino, and a bottom quark. Charged Higgs boson decays to $ \mathrm{c}\overline{\mathrm{b}} $ are searched for, resulting in a final state containing at least four jets, a charged lepton (muon or electron), and missing transverse momentum. A kinematic fit is performed to identify the pair of jets least likely to be the bottom quarks originating from direct top quark decays and the invariant mass of this pair is used as the final observable in the search. No evidence for the presence of a charged Higgs boson is observed and upper limits at 95% confidence level of 0.8–0.5% are set on the branching fraction ℬ(t → H$^{+}$b), assuming ℬ(H$^{+}$ → $ \mathrm{c}\overline{\mathrm{b}} $ ) = 1.0 and ℬ(t → H$^{+}$b) + ℬ(t → Wb) = 1.0, for the charged Higgs boson mass range 90–150 GeV. Journal of high energy physics 1811(11), 115 (2018). doi:10.1007/JHEP11(2018)115 Published by Springer Nature, Cham

  • Open Access
    Authors: 
    Peiris, David; Thompson, Simon; Beratarrechea, Andrea; MarĂ­A CĂĄrdenas; Diez-Canseco, Francisco; Goudge, Jane; Gyamfi, Joyce; Jemima Kamano; Irazola, Vilma; Johnson, Claire; +20 more
    Publisher: Figshare
    Project: EC | GACD (661024), CIHR

    NGA 15 Assessment. Tailored Hospital-based Risk Reduction to Impede Vascular Events after Stroke (THRIVES) (NGA 15).

  • Open Access English
    Authors: 
    Penca; Jerneja;
    Publisher: Zenodo
    Project: EC | EL-CSID (693799)

    Across the policy discourses and academic literature, the popularity of the concept of “science diplomacy” has used the concept in an uncritical manner. This paper aims to understand the concept’s value-added and the implications of its use. It considers the evolution of scientific cooperation and its interaction with foreign policy in the Euro-Mediterranean region. It finds out that many of the goals currently enshrined in “science diplomacy” have already constituted the history of the Euro-Mediterranean relationships since the launch of the Euro-Mediterranean Partnership. The difference with the past is that the EU now has higher political and economic expectations of genuine scientific cooperation. However, in contrast to widening the objectives, the EU has not substantively broadened the tools it avails of. This leads us to expect that the EU’s actual policy in regional scientific cooperation might nevertheless stay the same. While the rhetoric of science diplomacy is of little use, the paper suggests some meaningful questions in the science-foreign policy nexus to replace it.

  • Publication . Other literature type . Article . Research . Preprint . 2021
    Open Access English
    Authors: 
    Fruehwirth, Rudolf; Wulz, Claudia-Elisabeth; Melo Da Costa, Eliza; BRANDAO MALBOUISSON, Helena; Tomei, Thiago; De Moraes Gregores, Eduardo; De Souza Lemos, Dener; Garcia Fuentes, Francisco Ignacio; AGRAM, Jean-Laurent; Brom, Jean-Marie; +193 more
    Publisher: North-Holland Publ.
    Countries: Belgium, Germany, Italy, Switzerland, Italy, Belgium, Belgium, Spain, France, Germany ...
    Project: EC | LHCTOPVLQ (752730), EC | INSIGHTS (765710), EC | AMVA4NewPhysics (675440)

    Measurements of the second Fourier harmonic coefficient (v2) of the azimuthal distributions of prompt and nonprompt D0 mesons produced in pp and pPb collisions are presented. Nonprompt D0 mesons come from beauty hadron decays. The data samples are collected by the CMS experiment at nucleon-nucleon center-of-mass energies of 13 and 8.16 TeV, respectively. In high multiplicity pp collisions, v2 signals for prompt charm hadrons are reported for the first time, and are found to be comparable to those for light-flavor hadron species over a transverse momentum (pT) range of 2–6 GeV. Compared at similar event multiplicities, the prompt D0 meson v2 values in pp and pPb collisions are similar in magnitude. The v2 values for open beauty hadrons are extracted for the first time via nonprompt D0 mesons in pPb collisions. For pT in the range of 2–5 GeV, the results suggest that v2 for nonprompt D0 mesons is smaller than that for prompt D0 mesons. These new measurements indicate a positive charm hadron v2 in pp collisions and suggest a mass dependence in v2 between charm and beauty hadrons in the pPb system. These results provide insights into the origin of heavy-flavor quark collectivity in small systems. Individuals have received support from the Marie-Curie program and the European Research Council and Horizon 2020 Grant, contract Nos. 675440, 752730, and 765710 (European Union); CERN; the Programa Estatal de Fomento de la Investigación Científica y Técnica de Excelencia María de Maeztu, grant MDM-2015-0509 and the Programa Severo Ochoa del Principado de Asturias. CMS Collaboration: et al. Funded by SCOAP3. Peer reviewed

  • Publication . Conference object . Research . 2018
    Restricted
    Authors: 
    M. Livesu; D. Cabiddu; M. Attene;
    Publisher: The Eurographics Association
    Country: Italy
    Project: EC | CAxMan (680448)

    Accurately simulating Additive Manufacturing (AM) processes is useful to predict printing failures and test 3D printing without wasting precious resources, both in terms of time ad material. In AM the object to be fabricated is first cut into a set of slices aligned with the build direction, and then printed, depositing or solidifying material one layer on top of the other. To guarantee accurate simulations, it is therefore necessary to encode the temporal evolution of the shape to be printed within the simulation domain. We introduce slice2mesh, to the best of our knowledge the first software capable of turning a sliced object directly into a volumetric mesh. Our tool inputs a set of slices and produces a tetrahedral mesh that endows each slice in its connectivity. An accurate representation of the simulation domain at any time during the print can therefore be easily obtained by filtering out the slices yet to be processed. slice2mesh also features a flexible mesh generation system for external supports, and allows the user to trade accuracy for simplicity by producing approximate simulation domains obtained by filtering the object in slice space. Categories and Subject Descriptors (according to ACM CCS): I.3.3 [Computer Graphics]: Picture/Image Generation-Line and curve generation Smart Tools and Apps for Graphics - Eurographics Italian Chapter Conference M. Livesu, D. Cabiddu, and M. Attene Manufacturing Objects 23 13

  • Publication . Article . Other literature type . Research . Preprint . 2020
    Open Access
    Authors: 
    Valerie Domcke; Marco Drewes; Marco Hufnagel; Michele Lucente;
    Publisher: SPRINGER
    Countries: Germany, Switzerland
    Project: EC | NewAve (638528)

    We study the type-I seesaw model with three right-handed neutrinos and Majorana masses below the pion mass. In this mass range, the model parameter space is not only strongly constrained by the requirement to explain the light neutrino masses, but also by experimental searches and cosmological considerations. In the existing literature, three disjoint regions of potentially viable parameter space have been identified. In one of them, all heavy neutrinos decay shortly before big bang nucleosynthesis. In the other two regions, one of the heavy neutrinos either decays between BBN and the CMB decoupling or is quasi-stable. We show that previously unaccounted constraints from photodisintegration of nuclei practically rule out all relevant decays that happen between BBN and the CMB decoupling. Quite remarkably, if all heavy neutrinos decay before BBN, the baryon asymmetry of the universe can be quite generically explained by low-scale leptogenesis, i.e. without further tuning in addition to what is needed to avoid experimental and cosmological constraints. This motivates searches for heavy neutrinos in pion decay experiments. Journal of high energy physics 01(1), 200 (2021). doi:10.1007/JHEP01(2021)200 Published by SISSA, [Trieste]

  • Open Access
    Authors: 
    Martos-Sitcha, Juan; Bermejo-Nogales, Azucena; Calduch-Giner, Josep; PĂŠrez-SĂĄnchez, Jaume;
    Publisher: Figshare
    Project: EC | AQUAEXCEL2020 (652831)

    Forward (F) and reverse (R) primers used for real-time PCR. (DOCX 50Â kb)

  • Open Access English
    Authors: 
    Tsitsokas, Dimitrios; Kouvelas, Anastasios; id_orcid0000-0003-4571-2530; Geroliminis, Nikolas;
    Publisher: ETH Zurich
    Country: Switzerland
    Project: EC | DIT4TraM (953783)

    Traffic-responsive signal control is a cost-effective and easy-to-implement network management strategy with high potential in improving performance in congested networks with dynamic characteristics. Max Pressure (MP) distributed controller gained significant popularity due to its theoretically proven ability of queue stabilization and throughput maximization under specific assumptions. However, its effectiveness under saturated conditions is questionable, while network-wide application is limited due to high instrumentation cost. Perimeter control (PC) based on the concept of the Macroscopic Fundamental Diagram (MFD) is a state-of-the-art aggregated strategy that regulates exchange flows between regions, in order to maintain maximum regional travel production and prevent over-saturation. Yet, homogeneity assumption is hardly realistic in congested states, thus compromising PC efficiency. In this paper, the effectiveness of network-wide, parallel application of PC and MP embedded in a two-layer control framework is assessed with mesoscopic simulation. Aiming at reducing implementation cost of MP without significant performance loss, we propose a method to identify critical nodes for partial MP deployment. A modified version of Store-and-forward paradigm incorporating finite queue and spill-back consideration is used to test different configurations of the proposed framework, for a real large-scale network, in moderately and highly congested scenarios. Results show that: (i) combined control of MP and PC outperforms separate MP and PC applications in both demand scenarios; (ii) MP control in reduced critical node sets leads to similar or even better performance compared to full-network implementation, thus allowing for significant cost reduction; iii) the proposed control schemes improve system performance even under demand fluctuations of up to 20% of mean. arXiv

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