Search results for "Wirkung"
showing 10 items of 18 documents
Ab initio limits of atomic nuclei
2019
We predict the limits of existence of atomic nuclei, the proton and neutron drip lines, from the light through medium-mass regions. Starting from a chiral two- and three-nucleon interaction with good saturation properties, we use the valence-space in-medium similarity renormalization group to calculate ground-state and separation energies from helium to iron, nearly 700 isotopes in total. We use the available experimental data to quantify the theoretical uncertainties for our ab initio calculations towards the drip lines. Where the drip lines are known experimentally, our predictions are consistent within the estimated uncertainty. For the neutron-rich sodium to chromium isotopes, we provid…
Generation Z and Organizational Listening on Social Media
2020
Young people are avid users of social media and have appeared as a powerful force for social change, as shown by the ranks of those who have joined Greta Thunberg in the global climate movement. In addition to challenging political institutions and governments, young people today are also holding the corporate world accountable. To respond to young people’s expectations, brands, and organizations have turned to social media to interact and build relationships with them. However, critics have lamented that these attempts often fail and that young people’s trust in institutions, brands, and organizations continues to decline. This article asks how young people perceive organizational listenin…
Non-existence of unfair delay in the exercise of claim actio for amounts unduly collected. Comment on Spanish STS no. 243/2019, of April (RJ 2019, 15…
2020
El Tribunal Supremo considera que el mero retraso en el ejercicio de una acción de reclamación de cantidad no puede ser considerado por si sólo constitutivo de retraso desleal. Además, es necesario que previamente al ejercicio del derecho existan hechos, actos o conductas que provoquen en el obligado la confianza de que el derecho en su contra no se ejercitará. The Supreme Court considers that the mere delay in the exercise of an action of claim of quantity cannot be considered to constitute unfair delay. In addition, it is necessary that prior to the exercise of the right there are facts, acts or conducts that cause int the obliged the confidence that the right against him will not be exer…
Dispersion relations applied to double-folding potentials from chiral effective field theory
2020
We present a determination of optical potentials using the double-folding method based on chiral effective field theory nucleon-nucleon interactions at next-to-next-to-leading order combined with dispersion relations to constrain the imaginary part. This approach is benchmarked on O16-O16 collisions, and extended to the C12-C12 and C12-O16 cases. Predictions derived from these potentials are compared to data for elastic scattering at energies up to 1000 MeV, as well as for fusion at low energy. Without adjusting parameters, excellent agreement with experiment is found. In addition, we study the sensitivity of the corresponding cross sections to the nucleon-nucleon interactions and nuclear d…
“Una visione poliprospettica sull’emergenza da coronavirus nei rapporti tra privati”: note introduttive
2021
Il contributo analizza in maniera poliprospettica i cambiamenti accelerati dalla pandemia da Covid-19 (digitalizzazione con tutti i suoi corollari: smart working, commercio on line, processo telematico e amministrazione digitale, etc.) e quelli che sono stati provocati da essa (la galoppante deurbanizzazione e il crollo del mercato immobiliare nei centri delle grandi capitali del mondo).
Debating Europe: Effects of the “Eurovision Debate” on EU Attitudes of Young German Voters and the Moderating Role Played by Political Involvement
2016
In the run-up to the elections to the European Parliament in 2014, EU citizens had the unprecedented opportunity to watch televised debates between the candidates running for president of the European Commission. The most important debate was the so-called "Eurovision debate", which was broadcasted in almost all EU member states. In this study we explore the responses of a sample of 110 young German voters, who watched this debate, to the candidates' messages and whether exposure to the debate caused a shift in the respondents' attitudes towards the EU. Combining data from a quasi-experiment, real-time response data, and data from a content analysis of the debate, we find that respondents' …
Probing chiral interactions up to next-to-next-to-next-to-leading order in medium-mass nuclei
2019
We study ground-state energies and charge radii of closed-shell medium-mass nuclei based on novel chiral nucleon-nucleon (NN) and three-nucleon (3N) interactions, with a focus on exploring the connections between finite nuclei and nuclear matter. To this end, we perform in-medium similarity renormalization group (IM-SRG) calculations based on chiral interactions at next-to-leading order (NLO), N$^2$LO, and N$^3$LO, where the 3N interactions at N$^2$LO and N$^3$LO are fit to the empirical saturation point of nuclear matter and to the triton binding energy. Our results for energies and radii at N$^2$LO and N$^3$LO overlap within uncertainties, and the cutoff variation of the interactions is w…
Shell evolution of $N=40$ isotones towards $^{60}$Ca: First spectroscopy of $^{62}$Ti
2020
7 pags., 4 figs., 1 tab.
Buona fede, ragionevolezza e «efficacia immediata» dei principi
2017
Il volume affronta il tema del ruolo assolto dalla buona fede in seno allʼinterpretazione del contratto, la questione, particolarmente controversa, delle caratteristiche e della funzione della ragionevolezza in materia contrattuale e, infine, il connesso e prevalente problema dellʼefficacia diretta dei principî, specie nellʼambito dei rapporti contrattuali. La prospettiva consente di allargare lo sguardo alla fisionomia attuale dellʼordinamento giuridico italiano, anche alla luce del processo di integrazione europea e dellʼinfluenza di ordinamenti internazionali. Sullo sfondo si stagliano le questioni del rapporto tra legislazione e giurisdizione, dellʼindividuazione delle fonti del diritto…
First Results on the Scalar WIMP-Pion Coupling, Using the XENON1T Experiment
2018
We present first results on the scalar coupling of weakly interacting massive particles (WIMPs) to pions from 1 t yr of exposure with the XENON1T experiment. This interaction is generated when the WIMP couples to a virtual pion exchanged between the nucleons in a nucleus. In contrast to most nonrelativistic operators, these pion-exchange currents can be coherently enhanced by the total number of nucleons and therefore may dominate in scenarios where spin-independent WIMP-nucleon interactions are suppressed. Moreover, for natural values of the couplings, they dominate over the spin-dependent channel due to their coherence in the nucleus. Using the signal model of this new WIMP-pion channel, …