Search results for "NIP"
showing 10 items of 775 documents
Monipuolisuutta lasten liikuntaan määrän ja tehon rinnalle
2022
Strong coupling between surface plasmon polaritons and molecules : Lindblad equation approach
2016
Pintaplasmonipolaritonit (SPP) ovat metallin ja dielektrisen aineen, esim. ilma, rajapintaan syntyviä sähkömagneettisia aaltoja. Tämä työ käsittelee SPP:en ja molekyylien välistä vuorovaikutusta vahvan kytkennän rajalla. Vahvan kytkennän rajalla systeemin energiatilat muodostavat uusia hybriditiloja. Näitä uusia tiloja voidaan hyödyntää mm. kemiallisten reaktioiden muokkaamisessa ja kvantti-informatioteknologiassa. Eräs SPP:en ominaisuus on, että ne voivat lähettää vain p-polarisoitunutta valoa. Viimeaikaisissa tutkimuksissa on kuitenkin havaittu SPP–molekyyli-systeemin lähettävän myös s-polarisoitunutta valoa. Yksi tämän työn tavoitteista oli löytää prosessi, joka selittäisi s-polarisoitun…
Tēlainība politikas valodā
2017
Bakalaura darba tēma ir “Tēlainība politikas valodā”. No visiem tēlainās izteiksmes līdzekļiem šajā darbā tiek aplūkotas metaforas. Darba mērķis ir konstatēt metaforu tipus un to funkcijas runās, kas izskan no Saeimas tribīnes. Darba teorētiskajā daļā tiek raksturots politikas jēdziens un indivīda vieta politikā, noskaidrotas politikas valodas galvenās iezīmes, kā arī pētīts metaforas jēdziens.
Measurement of an Excess in the Yield of J/ψ at Very Low pT in Pb-Pb Collisions at √sNN = 2.76 TeV
2016
We report on the first measurement of an excess in the yield of J=ψ at very low transverse momentum (pT < 0.3 GeV=c) in peripheral hadronic Pb-Pb collisions at √sNN=2.76 TeV, performed by ALICE at the CERN LHC. Remarkably, the measured nuclear modification factor of J=ψ in the rapidity range 2.5 <y< 4 reaches about 7 (2) in the pT range 0–0.3 GeV=c in the 70%–90% (50%–70%) centrality class. The J=ψ production cross section associated with the observed excess is obtained under the hypothesis that coherent photoproduction of J=ψ is the underlying physics mechanism. If confirmed, the observation of J=ψ coherent photoproduction in Pb-Pb collisions at impact parameters smaller than twice the nu…
Prevalencia de riesgos psicosociales en personal de la administración de justicia de la comunidad valenciana (España) / Prevalence of psychosocial ri…
2016
RESUMEN: El objetivo del estudio fue evaluar los factores psicosociales en el trabajo del personal de justicia de la Comunidad Valencia (España) para identificar la prevalencia de riesgos psicosociales. Participaron 402 trabajadores (28.11 % hombres) incluyendo gestores, tramitadores y auxiliares sociales. Se evaluó con la Batería UNIPSICO (incluye factores de demanda, factores de recursos y consecuencias de los riesgos psicosociales). Los principales riesgos fueron la sobrecarga de trabajo (46.02 % de participantes en situación de alto riesgo) dentro de las demandas, la falta de recursos para realizar el trabajo (76.37 % en situación de alto riesgo) y la falta de autonomía (67.41 % en situ…
Approach to equilibrium of a quarkonium in a quark-gluon plasma
2018
We derive equations of motion for the reduced density matrix of a heavy quarkonium in contact with a quark-gluon plasma in thermal equilibrium. These equations allow in particular a proper treatment of the regime when the temperature of the plasma is comparable to the binding energy of the quarkonium. These equations are used to study how the quarkonium approaches equilibrium with the plasma, and we discuss the corresponding entropy increase, or free energy decrease, depending on the temperature regime. The effect of collisions can be accounted for by the generalization of the imaginary potential introduced in previous studies, and from which collision rates are derived. An important outcom…
Creation of quark-gluon plasma droplets with three distinct geometries
2019
Experimental studies of the collisions of heavy nuclei at relativistic energies have established the properties of the quark–gluon plasma (QGP), a state of hot, dense nuclear matter in which quarks and gluons are not bound into hadrons1,2,3,4. In this state, matter behaves as a nearly inviscid fluid5 that efficiently translates initial spatial anisotropies into correlated momentum anisotropies among the particles produced, creating a common velocity field pattern known as collective flow. In recent years, comparable momentum anisotropies have been measured in small-system proton–proton (p+p) and proton–nucleus (p+A) collisions, despite expectations that the volume and lifetime of the medium…
Minijet initial state of heavy-ion collisions from next-to-leading order perturbative QCD
2014
Measurements of the groomed jet radius and momentum splitting fraction with the soft drop and dynamical grooming algorithms in pp collisions at √s = …
2023
This article presents measurements of the groomed jet radius and momentum splitting fraction in pp collisions at √ s = 5.02 TeV with the ALICE detector at the Large Hadron Collider. Inclusive charged-particle jets are reconstructed at midrapidity using the anti-kT algorithm for transverse momentum 60< 80 GeV/c. We report results using two different grooming algorithms: soft drop and, for the first time, dynamical grooming. For each grooming algorithm, a variety of grooming settings are used in order to explore the impact of collinear radiation on these jet substructure observables. These results are compared to perturbative calculations that include resummation of large logarithms at all or…
Measurement of inclusive and leading subjet fragmentation in pp and Pb–Pb collisions at √sNN = 5.02 TeV
2023
This article presents new measurements of the fragmentation properties of jets in both proton–proton (pp) and heavy-ion collisions with the ALICE experiment at the Large Hadron Collider (LHC). We report distributions of the fraction zr of transverse momentum carried by subjets of radius r within jets of radius R. Charged-particle jets are reconstructed at midrapidity using the anti-kT algorithm with jet radius R = 0.4, and subjets are reconstructed by reclustering the jet constituents using the anti-kT algorithm with radii r = 0.1 and r = 0.2. In proton–proton collisions, we measure both the inclusive and leading subjet distributions. We compare these measurements to perturbative calculatio…