Search results for "SII"
showing 10 items of 3468 documents
Mass testing and characterization of 20-inch PMTs for JUNO
2022
Main goal of the JUNO experiment is to determine the neutrino mass ordering using a 20 kt liquid-scintillator detector. Its key feature is an excellent energy resolution of at least 3% at 1 MeV, for which its instruments need to meet a certain quality and thus have to be fully characterized. More than 20,000 20-inch PMTs have been received and assessed by JUNO after a detailed testing program which began in 2017 and elapsed for about four years. Based on this mass characterization and a set of specific requirements, a good quality of all accepted PMTs could be ascertained. This paper presents the performed testing procedure with the designed testing systems as well as the statistical charac…
Production of a 15C radioactive ion beam based on 18O(n, α)
2019
In the context of the SPIRAL2 radioactive beam facility the production rate of the neutron-rich 15C nucleus by 18O(n,α) has been investigated. In a water target of 20 cm3, enriched in 18O and placed behind the neutron converter, a rate of a few 1010 nuclei per second can be reached with 1mA of 40MeV deuterons. A 18O(n,α) cross-section based on the activation method is proposed. It is intermediate between the highest and lowest evaluations available to date. peerReviewed
Pienryhmäkeskustelu opetuskeinona yliopistofysiikan peruskurssin laskuharjoituksissa
2012
Tässä tutkielmassa tutustuttiin fysiikan peruskurssin laskuharjoitusten toteutukseen pienryhmä-keskustelujen avulla ja siihen, miten pienryhmäkeskustelua voisi muuttaa oppimisen kannalta tehokkaammaksi. Lisäksi tutkimuksessa katsottiin vaikuttaako tilaisuutta ohjaavan assistentin osallistuminen keskusteluihin keskusteluiden luonteeseen. Tutkittavat pienryhmäkeskustelut ää-nitettiin ja kuvattiin analysointia varten. Tutkittavana kurssina toimi Jyväskylän yliopiston fysii-kanlaitoksen mekaniikan peruskurssin jatko-osa. Tuloksena saatiin, että eksploratiivista keskustelua, joka on oppimisen kannalta kaikista tehok-kainta, esiintyi pienryhmäkeskusteluissa eniten sellaisissa tehtävissä, joissa o…
Two-particle transverse momentum correlations in pp and p-Pb collisions at energies available at the CERN Large Hadron Collider
2023
Two-particle transverse momentum differential correlators, recently measured in Pb--Pb collisions at energies available at the CERN Large Hadron Collider (LHC), provide an additional tool to gain insights into particle production mechanisms and infer transport properties, such as the ratio of shear viscosity to entropy density, of the medium created in Pb-Pb collisions. The longitudinal long-range correlations and the large azimuthal anisotropy measured at low transverse momenta in small collision systems, namely pp and p-Pb, at LHC energies resemble manifestations of collective behaviour. This suggests that locally equilibrated matter may be produced in these small collision systems, simil…
Evidence of Single State Dominance in the Two-Neutrino Double-β Decay of ^{82}Se with CUPID-0.
2019
We report on the measurement of the two-neutrino double-β decay of ^{82}Se performed for the first time with cryogenic calorimeters, in the framework of the CUPID-0 experiment. With an exposure of 9.95 kg yr of Zn^{82}Se, we determine the two-neutrino double-β decay half-life of ^{82}Se with an unprecedented precision level, T_{1/2}^{2ν}=[8.60±0.03(stat) _{-0.13}^{+0.19}(syst)]×10^{19} yr. The very high signal-to-background ratio, along with the detailed reconstruction of the background sources allowed us to identify the single state dominance as the underlying mechanism of such a process, demonstrating that the higher state dominance hypothesis is disfavored at the level of 5.5σ.
Serialismista "raffinoituun primitiivisyyteen" : Erik Bergmanin sävelkielen kehitys 1960-1973 kolmen orkesteriteoksen valossa
2000
Tyylianalyyttinen tutkimus Usko Meriläisen teoksista "Mobile" - Ein Spiel für Orchester ja ...mutta tämähän on maisema, monsieur Dali!
2001
Kuusikymmentä ja työssä
2003
Neksusanalyysi suomen kielen oppimisesta siivoustyössä
2017
This dissertation focuses on Finnish language learning opportunities in cleaning work, which is the most common job for immigrants in Finland. The study investigates what opportunities and constraints there are for Finnish language learning in cleaning work, how a work community supports language learning, and what factors facilitate or constrain investment in language learning at work. Language learning opportunities are explored from an ecological approach as affordances – the reciprocal relations between an individual and his/her social and physical environment. The study also explores the scaffolding provided by the work community and investment in second language learning. Nexus analys…
Mahdollisuuksien rajoissa : neksusanalyysi suomen kielen oppimisesta siivoustyössä
2018
Maiju Strömmerin suomen kielen alaan kuuluva väitöskirja tarkastettiin Jyväskylän yliopistossa 15. joulukuuta 2017. Vastaväittäjänä toimi dosentti Leena Kuure Oulun yliopistosta ja kustoksena professori Minna Suni. Maiju Strömmer: Mahdollisuuksien rajoissa. Neksusanalyysi suomen kielen oppimisesta siivoustyössä. Jyväskylä Studies in Humanities 336. Jyväskylä: Jyväskylän yliopisto 2017. Kirja on luettavissa osoitteessa http://urn.fi/URN:ISBN:978-951-39-7265-3 nonPeerReviewed