688 research outputs found

    Taking Deliberation to the Streets : Reflections on Deliberative Walks

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    The focus of this article, a model that we call the Deliberative Walk, builds on the principles of Citizens’ Juries and Development Walks. Two case studies are used to explore the potential of uniting the two different participatory models, one that is based on discussion and the other that is more observation oriented. Both case studies were implemented in Finland during autumn 2014. Reviewing these case studies is important, because the issue of ‘taking deliberation to the streets’ has rarely been addressed in the academic literature on CJs and other deliberative mini-publics. Based on the case studies, our suggestion is that in place-specific deliberations, a Deliberative Walk is a suitable method when the issue that is being tackled has highly intertwined social and physical dimensions, while in more situation-specific deliberations, a Deliberative Walk adds value when the issue is such that it needs a more complete and direct learning experience.fi=vertaisarvioitu|en=peerReviewed

    Infection rates and prevalence of metazoan parasites of the non-native round goby (Neogobius melanostomus) in the Baltic Sea

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    Studies in the Baltic Sea have identified over 30 parasite taxa infecting the invasive round goby (Neogobius melanostomus (Pallas, 1814). In this study, we aimed at comparing parasite assemblages and infection rates (prevalence and intensity) in different populations across the invasive range in the Baltic Sea (Denmark, Lithuania, Estonia and Finland). Infection rates were 56-60% across all locations except Lithuania (28%). However, the parasite assemblages in the sampled populations were dissimilar, each location having unique parasites. In addition, many of the parasites were generalists commonly infecting native fish species. Based on the results of this study and those previously conducted in the Baltic Sea, the round goby has not retained parasites from its area of origin, but instead has been successively colonized by native generalist parasites. Although variable, overall parasite richness is still quite low around the Baltic compared to the native areas (34 vs 71 taxa, respectively). Also, prevalence and mean infection intensities in the Baltic Sea are significantly lower than in the native areas. Therefore, the invasion success of the round goby in the Baltic Sea can at least partly be attributed to enemy release, in this case shedding a significant proportion of their native parasite load.Peer reviewe

    Entwicklungstendenzen und Entwicklungsbedingungen der gesellschaftlichen AktivitÀt junger WerktÀtiger: erste Ergebnisse der AktivitÀtsstudie ; Komplexstudie '79 ; Teilbericht Nr. 3

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    Vorgelegt werden Ergebnisse einer schriftlichen Befragung junger BerufstĂ€tiger (n=6794) und Lehrlinge (n=2475). Hierbei geht es zunĂ€chst um die politische AktivitĂ€t junger WerktĂ€tiger. Behandelt werden folgende Faktoren: (1) Mitgliedschaft in der SED; (2) Mitgliedschaft in gesellschaftlichen Massenorganisationen; (3) AusĂŒbung ehrenamtlicher Funktionen in gesellschaftlichen Massenorganisationen. Weitere Schwerpunkte betreffen die Teilnahme an organisierter fachlicher Weiterbildung, an organisierter kulturell-kĂŒnstlerischer BetĂ€tigung sowie an organisierter sportlicher BetĂ€tigung. (ICE

    Ferromagnetic (Ga,Mn)As nanowires grown by Mn-assisted molecular beam epitaxy

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    (Ga,Mn)As nanowires were grown by molecular beam epitaxy using Mn as a growth catalyst on GaAs(001) substrates at 485 °C, i.e., at intermediate temperatures higher than ones used for the growth of (Ga,Mn)As thin films, but lower than the ordinary temperatures of Au-assisted growth of GaAs nanowires. (Ga,Mn)As nanowires obtained with typical lengths between 0.8 and 4 Όm and diameters 50–90 nm do not have defects, such as dislocations or precipitates, except for the stacking faults lying parallel to the growth direction. The investigation of magnetic and optical properties has been carried out not only for as-grown samples with nanowires but also for peeled off nanowires from the host substrate. The results obtained demonstrate that (Ga,Mn)As nanowires exhibit ferromagnetic ordering around 70 K.Peer reviewe

    Temperature dependence of eta/s of strongly interacting matter : Effects of the equation of state and the parametric form of (eta/s)(T)

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    We investigate the temperature dependence of the shear viscosity to entropy density ratio eta/s using a piecewise linear parametrization. To determine the optimal values of the parameters and the associated uncertainties, we perform a global Bayesian model-to-data comparison on Au + Au collisions at root s(NN) = 200 GeV and Pb + Pb collisions at 2.76 TeV and 5.02 TeV, using a 2 + 1D hydrodynamical model with the Eskola-KajantieRuuskanen-Tuominen (EKRT) initial state. We provide three new parametrizations of the equation of state (EoS) based on contemporary lattice results and hadron resonance gas, and use them and the widely used s95p parametrization to explore the uncertainty in the analysis due to the choice of the equation of state. We find that eta/s is most constrained in the temperature range T approximate to 150-220 MeV, where, for all EoSs, 0.08 <eta/s <0.23 when taking into account the 90% credible intervals. In this temperature range the EoS parametrization has only a small similar to 10% effect on the favored eta/s value, which is less than the similar to 30% uncertainty of the analysis using a single EoS parametrization. Our parametrization of (eta/s)(T) leads to a slightly larger minimum value of eta/s than the previously used parametrizations. When we constrain our parametrization to mimic the previously used parametrizations, our favored value is reduced, and the difference becomes statistically insignificant.Peer reviewe

    Design of a novel instrument for active neutron interrogation of artillery shells

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    The most common explosives can be uniquely identified by measuring the elemental H/N ratio with a precision better than 10%. Monte Carlo simulations were used to design two variants of a new prompt gamma neutron activation instrument that can achieve this precision. The instrument features an intense pulsed neutron generator with precise timing. Measuring the hydrogen peak from the target explosive is especially challenging because the instrument itself contains hydrogen, which is needed for neutron moderation and shielding. By iterative design optimization, the fraction of the hydrogen peak counts coming from the explosive under interrogation increased from 53(-7)(-7)% to 74(-10)(+8)% (statistical only) for the benchmark design. In the optimized design variants, the hydrogen signal from a high-explosive shell can be measured to a statistics-only precision better than 1% in less than 30 minutes for an average neutron production yield of 10(9) n/s.Peer reviewe
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