Search results for "Jet"
showing 10 items of 4711 documents
Biometristen todennusmenetelmien tietoturva ja käytettävyys – sormenjälki ja silmän iiris biometrisinä tunnisteina
2016
Ihmiset joutuvat päivittäin todentamaan identiteettinsä erilaisin keinon saadakseen pääsyn esimerkiksi johonkin palveluun tai laitteeseen. Perinteisten, esimerkiksi käyttäjänimeen ja salasanaan tai ulkoisesti generoitavaan koodiin perustuvien todennusmenetelmien lisäksi erilaiset käyttäjän luonnollisiin piirteisiin perustuvat biometriset todennusmenetelmät ovat kasvattaneet suosiotaan viime vuosina. Biometriaa hyödynnetään esimerkiksi korkean turvatason kulunvalvonnassa, valtioiden rajavalvonnassa ja yksityishenkilöiden matkapuhelimissa. Tietoturvan ja käytettävyyden näkökulmat ovat tärkeitä, jotta voidaan luoda biometrisia todennusjärjestelmiä, joissa saavutetaan tyydyttävä turvataso ja sä…
El trabajo doméstico: Un análisis jurídico a la luz del paradigma internacional del trabajo decente
2022
En los últimos años, como consecuencia de factores tales como la incorporación masiva de la mujer al mercado de trabajo, la escasez de políticas públicas encaminadas a favorecer la conciliación de la vida laboral y familiar y el envejecimiento de la población, se ha producido un “resurgimiento” del trabajo doméstico. Pese a su esencialidad para el correcto funcionamiento de la economía, paradójicamente, este sigue siendo una de las actividades más precarias y vulnerables del mercado de trabajo. Son las peculiaridades propias del sector las que hacen del trabajo doméstico una actividad caracterizada por la explotación, la invisibilidad y el aislamiento. Los componentes domiciliario – al ser …
Three-dimensional core-collapse supernovae with complex magnetic structures: I. Explosion dynamics
2021
Magnetic fields can play a major role in the dynamics of outstanding explosions associated to violent events such as GRBs and hypernovae, since they provide a natural mechanism to harness the rotational energy of the central proto-neutron star and power relativistic jets through the stellar progenitor. As the structure of such fields is quite uncertain, most numerical models of MHD-driven core-collapse supernovae consider an aligned dipole as initial magnetic field, while the field's morphology can actually be much more complex. We present three-dimensional simulations of core-collapse supernovae with more realistic magnetic structures, such as quadrupolar fields and, for the first time, an…
Energy efficient model for biogas production in farm scale
2011
Energy efficient solutions for six farm biogas production was found by calculating mass and energy balance in different scenarios. Raw materials in biogas production were cow manure and grass silage that were produced in these farms. There were calculated mass and energy balances on average for one year biogas prouduction that consisted of grass silage production, raw material transportation and biogas production in the biogas plant. In addition, direct greenhouse gases from biogas production were estimated. The direct mass and energy flows were calculated. It turned out that one input energy unit can produce 5.0 to 5.5 energy units as heat and electricity. Biogas reactor consumed heat from…
Search for photonic signatures of gauge-mediated supersymmetry in 8TeV pp collisions with the ATLAS detector
2015
A search is presented for photonic signatures motivated by generalized models of gauge-mediated supersymmetry breaking. This search makes use of 20.3 fb[superscript −1] of proton-proton collision data at √s = 8 TeV recorded by the ATLAS detector at the LHC, and explores models dominated by both strong and electroweak production of supersymmetric partner states. Four experimental signatures incorporating an isolated photon and significant missing transverse momentum are explored. These signatures include events with an additional photon, lepton, b-quark jet, or jet activity not associated with any specific underlying quark flavor. No significant excess of events is observed above the Stand…
Le travail discipliné : genèse d'un projet technologique au XIXe siècle
2009
International audience
From investing to saving in education : principals and educational savings
2017
In autumn 2015, it was announced that the government would execute massive budget cuts to education. This was due to the efforts of the new government to save money and balance the state economics. The amount of money that the state intended to save from the basic education, also known as primary and lower secondary schools nationwide was estimated to be around 40 million euros. 30 million euros out 40 million euro savings was from group size money and 10 million of development money. Money directed to group sizes has been used by the schools to downsize the class and group sizes. The developing money on the other hand is for the development of the schools, for example to modernize equipmen…
Kuntahallinnon uudelleenorganisointia Suomessa : kuinka käy kulttuuritoimelle?
1999
Import and impact : characterization of parvovirus-nucleus interactions
2016
Understanding tungsten erosion during inter/intra-ELM periods in He-dominated JET-ILW plasmas
2021
Tungsten erosion was quantified during inter/intra-ELM periods in He-dominated JET-ILW plasmas by optical emission spectroscopy. The intra-ELM tungsten sputtering in helium plasmas, which dominates the total W source, prevails by a factor of about 4 over inter-ELM sputtering in the investigated ELM frequency range from 90 Hz-120 Hz. He ions are mainly responsible for the W erosion during the ELMs in He plasmas. The strong in/out asymmetry of the ELM-induced W erosion is observed in He plasmas even at high ELM frequencies beyond 100 Hz. In Ohmic/L-mode plasmas and during the H-mode inter-ELM plasma phases both He2+ and Be2+ ionic species are major contributors to the W erosion. Their contrib…