Search results for "arki"
showing 10 items of 1015 documents
Diquark correlations in hadron physics: Origin, impact and evidence
2020
The last decade has seen a marked shift in how the internal structure of hadrons is understood. Modern experimental facilities, new theoretical techniques for the continuum bound-state problem and progress with lattice-regularised QCD have provided strong indications that soft quark+quark (diquark) correlations play a crucial role in hadron physics. For example, theory indicates that the appearance of such correlations is a necessary consequence of dynamical chiral symmetry breaking, viz. a corollary of emergent hadronic mass that is responsible for almost all visible mass in the universe; experiment has uncovered signals for such correlations in the flavour-separation of the proton's elect…
Linearly polarized gluons and axial charge fluctuations in the glasma
2018
We calculate of the one- and two-point correlation functions of the energy density and the divergence of the Chern-Simons current in the nonequilibrium Glasma state formed in a high-energy nuclear collision. We show that the latter depends on the difference of the total and linearly polarized gluon transverse momentum distributions. Since the divergence of the Chern-Simons current provides the source of axial charge, we infer information about the statistical properties of axial charge production at early times. We further develop a simple phenomenological model to characterize axial charge distributions in terms of distributions of the energy density.
Measurement of beauty production via non-prompt D0 mesons in Pb-Pb collisions at √sNN = 5.02 TeV
2022
The production of non-prompt D0 mesons from beauty-hadron decays was measured at midrapidity (|y| 5 GeV/c in the 0–10% central Pb-Pb collisions. The data are described by models that include both collisional and radiative processes in the calculation of beauty-quark energy loss in the quark-gluon plasma, and quark recombination in addition to fragmentation as a hadronisation mechanism. The ratio of the non-prompt to prompt D0-meson RAA is larger than unity for pT> 4 GeV/c in the 0–10% central Pb-Pb collisions, as predicted by models in which beauty quarks lose less energy than charm quarks in the quark-gluon plasma because of their larger mass. [Figure not available: see fulltext.]
The FIRST experiment at GSI
2012
The FIRST (Fragmentation of Ions Relevant for Space and Therapy) experiment at the SIS accelerator of GSI laboratory in Darmstadt has been designed for the measurement of ion fragmentation cross-sections at different angles and energies between 100 and 1000 MeV/nucleon. Nuclear fragmentation processes are relevant in several fields of basic research and applied physics and are of particular interest for tumor therapy and for space radiation protection applications. The start of the scientific program of the FIRST experiment was on summer 2011 and was focused on the measurement of 400 MeV/nucleon 12C beam fragmentation on thin (8 mm) graphite target. The detector is partly based on an alread…
Aikuisuus nuorten kokemana : nuorten kokemuksia aikuisten arjesta ja mielikuvia omasta tulevaisuudesta aikuisena
2015
Jokinen, Veera. 2015. Aikuisuus nuorten kokemana. Nuorten kokemuksia aikuisten arjesta ja mielikuvia omasta tulevaisuudesta aikuisena. Kasvatustieteen pro gradu- tutkielma. Jyväskylän yliopisto. Opettajankoulutuslaitos. Tämän tutkimuksen tarkoituksena oli tutkia nuorten kokemuksellista suhdetta aikuisuuteen. Tavoitteena oli ymmärtää, miten nuoret kokevat heitä ympäröivien aikuisten arjen ja elämän, sekä millaisia tulevaisuuskuvia nuorilla on omasta aikuisuudestaan. Tutkimuksen tavoitteena oli lisätä ymmärrystä nuorten kokemuksista ohjauksen kehittämiseksi. Tutkimus toteutettiin aineistolähtöisesti fenomenologisen metodin ohjaamana. Kohdejoukkona toimivat 9.-luokkalaiset nuoret. Aineisto ker…
Sähköinen arkistointi ja pitkäaikaissäilytys Suomessa valmisohjelmistolla
2012
Arkistointi on hävittämisen taidetta. Kun työkalut ovat hallussa, tietää lainalaisuudet ja käytettävät standardit, voi keskittyä tähän taitolajiin, mitä säilyttää ja mitä hävittää. Tässä työssäni tarkastelen sähköisen arkistoinnin ja pitkäaikaissäilytykset peruskäsitteet, merkittävimmät standardit ja ohjelmistot. Lisäksi avaan lainalaisuuksia ja koitan selvittää kuinka lainsäädäntö säätelee sähköistä arkistointia. Tutkin kuusi suomessa toteutettua julkishallinnon arkistointi ja/tai pitkäaikaissäilytysratkaisua. Julkishallinnon asiakirjanhallinta ja arkistointi on selkeää, sitä ohjaa lainsäädäntö ja Arkistolaitos. Muiden täytyy ymmärtää ensin syyt, joiden takia arkistoidaan tietoa, sekä kaua…
Life-Space Mobility in Parkinson's Disease: Associations with Motor and Non-Motor Symptoms.
2019
Background To describe life-space mobility and explore associations of motor and non-motor symptoms with life-space mobility in people with Parkinson’s disease (PD). Methods About 164 community-dwelling persons with PD (mean age 71.6 years, 64.6% men) received a postal survey and a subsequent home visit. Motor assessments included perceived walking difficulties (Walk-12G), mobility (Timed Up and Go test), motor symptoms (UPDRS-III), and freezing of gait (item 3, FOG-Qsa). Non-motor symptoms included depressive symptoms (GDS-15), pain, fatigue (NHP-EN), and global cognition (MoCA). Life-space mobility was assessed with the life-space assessment (LSA). Calculations included composite score (r…
Service quality benchmarking via a novel approach based on fuzzy ELECTRE III and IPA: an empirical case involving the Italian public healthcare conte…
2017
A novel fuzzy-based approach which combines ELECTRE III along with the Importance-Performance Analysis (IPA) is proposed in the present work to comparatively evaluate the service quality in the public healthcare context. Specifically, ELECTRE III is firstly considered to compare the service performance of examined hospitals in a noncompensatory manner. Afterwards, IPA is employed to support the service quality management to point out improvement needs and their priorities. The proposed approach also incorporates features of the Fuzzy Set Theory so as to address the possible uncertainty, subjectivity and vagueness of involved experts in evaluating the service quality. The model is applied to…
O utworzeniu Parku Narodowego "Puszcza Śląska"
2016
National Park is in Рolish law one of the most important protection form that is dedicated to areas sustained in natural conditions, having fairly untouched vegetation and biodiversity. Despite that the Silesian Forest-Nature District has a unique areas in terms of nature values as well as cultural and biodiversity heritage, no national parks were established here until now. In the proposed national park of Silesian Forest 50 legally protected plant species were noted, in this 16 listed as threatened in Polish Red Data Book. More than 130 plant species were found rare within the area. Approximately 250 legally protected animal species are found within park borders that are permanent residen…
A system-level mathematical model of Basal Ganglia motor-circuit for kinematic planning of arm movements
2017
International audience; In this paper, a novel system-level mathematical model of the Basal Ganglia (BG) for kinematic planning, is proposed. An arm composed of several segments presents a geometric redundancy. Thus, selecting one trajectory among an infinite number of possible ones requires overcoming redundancy, according to some kinds of optimization. Solving this optimization is assumed to be the function of BG in planning. In the proposed model, first, a mathematical solution of kinematic planning is proposed for movements of a redundant arm in a plane, based on minimizing energy consumption. Next, the function of each part in the model is interpreted as a possible role of a nucleus of…