In this talk we review jet production in a large variety of collision systems
using the JETSCAPE event generator and Hybrid Hadronization. Hybrid
Hadronization combines quark recombination, ...applicable when distances between
partons in phase space are small, and string fragmentation appropriate for
dilute parton systems. It can therefore smoothly describe the transition from
very dilute parton systems like $e^++e^-$ to full $A+A$ collisions. We test
this picture by using JETSCAPE to generate jets in various systems. Comparison
to experimental data in $e^++e^-$ and $p+p$ collisions allows for a precise
tuning of vacuum baseline parameters in JETSCAPE and Hybrid Hadronization.
Proceeding to systems with jets embedded in a medium, we study in-medium
hadronization for jet showers. We quantify the effects of an ambient medium,
focusing in particular on the dependence on the collective flow and size of the
medium. Our results clarify the effects we expect from in-medium hadronization
of jets on observables like fragmentation functions, hadron chemistry and jet
shape.
Proceedings of Science (Hard Probes 2023) 2023 Understanding the modification of jets and high-$p_T$ probes in small systems
requires the integration of soft and hard physics. We present recent
...developments in extending the JETSCAPE framework to build an event generator,
which includes correlations between soft and hard partons, to study jet
observables in small systems. The multi-scale physics of the collision is
separated into different stages. Hard scatterings are first sampled at binary
collision positions provided by the Glauber geometry. They are then propagated
backward in space-time following an initial-state shower to obtain the
initiating partons' energies and momenta before the collision. These energies
and momenta are then subtracted from the incoming colliding nucleons for
soft-particle production, modeled by the 3D-Glauber + hydrodynamics + hadronic
transport framework. This new hybrid approach (X-SCAPE) includes non-trivial
correlations between jet and soft particle productions in small systems. We
calibrate this framework with the final state hadrons' $p_T$-spectra from low
to high $p_T$ in $p$-$p$, and and then compare with the spectra in $p$-$Pb$
collisions from the LHC. We also present results for additional observables
such as the distributions of event activity as a function of the hardest jet
$p_T$ in forward and mid-rapidity for both $p$-$p$ and $p$-$Pb$ collisions.
Considerable information about the early-stage dynamics of heavy-ion collisions is encoded in the rapidity dependence of measurements. To leverage the large amount of experimental data, we perform a ...systematic analysis using three-dimensional hydrodynamic simulations of multiple collision systems -- large and small, symmetric and asymmetric. Specifically, we perform fully 3D multi-stage hydrodynamic simulations initialized by a parameterized model for rapidity-dependent energy deposition, which we calibrate on the hadron multiplicity and anisotropic flow coefficients. We utilize Bayesian inference to constrain properties of the early- and late- time dynamics of the system, and highlight the impact of enforcing global energy conservation in our 3D model.
Voice-based Conversational UX Studies and Design Reeves, Stuart; Porcheron, Martin; Fischer, Joel E. ...
Extended Abstracts of the 2018 CHI Conference on Human Factors in Computing Systems,
04/2018
Conference Proceeding
Voice User Interfaces are becoming ubiquitously available, providing unprecedented opportunities to advance our understanding of voice interaction in a burgeoning array of practices and settings. We ...invite participants to contribute work-in-progress in voice interaction, and to come together to reflect on related methodological matters, social uses, and design issues. This one-day workshop will be geared specifically to present and discuss methodologies for, and data emerging from, ongoing empirical studies of voice interfaces in use and connected emerging design insights. We seek to draw on participants' (alongside organisers') contributions to explore ways of operationalising findings from such studies for the purposes of design. As part of this, will try to identify what can be done to improve user experience and consider creative approaches to how we might ameliorate challenges that are faced in the design of voice UIs.
In this talk we review jet production in a large variety of collision systems using the JETSCAPE event generator and Hybrid Hadronization. Hybrid Hadronization combines quark recombination, ...applicable when distances between partons in phase space are small, and string fragmentation appropriate for dilute parton systems. It can therefore smoothly describe the transition from very dilute parton systems like \(e^++e^-\) to full \(A+A\) collisions. We test this picture by using JETSCAPE to generate jets in various systems. Comparison to experimental data in \(e^++e^-\) and \(p+p\) collisions allows for a precise tuning of vacuum baseline parameters in JETSCAPE and Hybrid Hadronization. Proceeding to systems with jets embedded in a medium, we study in-medium hadronization for jet showers. We quantify the effects of an ambient medium, focusing in particular on the dependence on the collective flow and size of the medium. Our results clarify the effects we expect from in-medium hadronization of jets on observables like fragmentation functions, hadron chemistry and jet shape.
Understanding the modification of jets and high-\(p_T\) probes in small systems requires the integration of soft and hard physics. We present recent developments in extending the JETSCAPE framework ...to build an event generator, which includes correlations between soft and hard partons, to study jet observables in small systems. The multi-scale physics of the collision is separated into different stages. Hard scatterings are first sampled at binary collision positions provided by the Glauber geometry. They are then propagated backward in space-time following an initial-state shower to obtain the initiating partons' energies and momenta before the collision. These energies and momenta are then subtracted from the incoming colliding nucleons for soft-particle production, modeled by the 3D-Glauber + hydrodynamics + hadronic transport framework. This new hybrid approach (X-SCAPE) includes non-trivial correlations between jet and soft particle productions in small systems. We calibrate this framework with the final state hadrons' \(p_T\)-spectra from low to high \(p_T\) in \(p\)-\(p\), and and then compare with the spectra in \(p\)-\(Pb\) collisions from the LHC. We also present results for additional observables such as the distributions of event activity as a function of the hardest jet \(p_T\) in forward and mid-rapidity for both \(p\)-\(p\) and \(p\)-\(Pb\) collisions.
Les interactions de service font sans doute partie des activités qui ont été les plus transformées ces dernières décennies par l’introduction massive de technologies de communication, notamment dans ...un souci d’automatisation (interfaces vocales, interfaces web, bornes interactives de vente et d’information, avatars). Deux éléments de justification sont avancés pour expliquer le déploiement des automates : des enjeux de rentabilité pour les entreprises, des enjeux de « modernisation de l’accue...
L’ouvrage du sociologue des sciences et des techniques Harry Collins est une contribution majeure à la sociologie de l’intelligence artificielle (IA) qui montre bien l’intérêt de faire exister une ...perspective solidement ancrée dans les sciences sociales pour penser ses développements récents. C’est précisément cette perspective qui place le livre au cœur des débats dans ce domaine, car l’auteur procède à une critique interne de la technologie du point de vue des connaissances produites par la...
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