355 research outputs found

    Research on Staff loyalty of Creative Industries Enterprise from the Perspective of stakeholder

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    Abstract: This article from the perspective of stakeholders, learned theory of stakeholders, creative industries, staff loyalty and staff loyalty level; established index system for evaluating employees loyalty of creative industries; through the fuzzy comprehensive evaluation method and examples of Wuxi enterprises of the creative industries, did quantification and applied research to index system. Key words: Stakeholder; Creative Industries; Staff loyalt

    Right-handed Dirac and Majorana neutrinos at Belle II

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    We assess the ability of the Belle II experiment to probe the Dirac or Majorana nature of a massive right-handed neutrino (RHN) NN in the MeV to GeV mass range. We consider the production and decay of RHNs to proceed via new interactions described by the standard model effective field theory (SMEFT) extended with right-handed neutrino fields (SMNEFT), and not via mass mixing with active neutrinos. We find that Belle II has the potential to discover NN if kinematically accessible. We perform detailed simulations of the angular distributions of lepton pairs from the decay of NN produced in two-body and three-body decays of BB mesons. We show that for mNm_N above 100 MeV, Belle II can distinguish between Dirac and Majorana neutrinos at more than the 5σ\sigma CL for most operators, and the combination of the production and decay operators can be identified from the subsequent decay of the heavy neutrino. Also, the production operators can be identified using three-body BB meson decay independently of mNm_N.Comment: 27 pages, 13 figures, 12 table

    Extending the unified subhalo model to warm dark matter

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    Using a set of high-resolution N-body simulations, we extend the unified distribution model of cold dark matter (CDM) subhaloes to the warm dark matter(WDM) case. The same model framework combining the unevolved mass function, unevolved radial distribution, and tidal stripping can predict the mass function and spatial distribution of subhaloes in both CDM and WDM simulations. The dependence of the model on the DM particle property is universally parameterized through the half-mode mass of the initial power spectrum. Compared with the CDM model, the WDM model differs most notably in two aspects. 1) In contrast to the power-law form in CDM, the unevolved subhalo mass function for WDM is scale-dependent at the low mass end due to the cut-off in the initial power spectrum. 2) WDM subhaloes are more vulnerable to tidal stripping and disruption due to their lower concentrations at accretion time. Their survival rate is also found to depend on the infall mass. Accounting for these differences, the model predicts a final WDM subhalo mass function that is also proportional to the unevolved subhalo mass function. The radial distribution of WDM subhaloes is predicted to be mass-dependent. For low mass subhaloes, the radial distribution is flatter in the inner halo and steeper in the outer halo compared to the CDM counterpart, due to the scale-dependent unevolved mass function and the enhanced tidal stripping. The code for sampling subhaloes according to our generalized model is available at https://github.com/fhtouma/subgen2 .Comment: 15 pages, 14 figure

    Nonequilibrium Mean-Field Theory of Resistive Phase Transitions

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    We investigate the quantum mechanical origin of resistive phase transitions in solids driven by a constant electric field in the vicinity of a metal-insulator transition. We perform a nonequilibrium mean-field analysis of a driven-dissipative anti-ferromagnet, which we solve analytically for the most part. We find that the insulator-to-metal transition (IMT) and the metal-to-insulator transition (MIT) proceed by two distinct electronic mechanisms: Landau-Zener processes, and the destabilization of metallic state by Joule heating, respectively. However, we show that both regimes can be unified in a common effective thermal description, where the effective temperature TeffT_{\rm eff} depends on the state of the system. This explains recent experimental measurements in which the hot-electron temperature at the IMT was found to match the equilibrium transition temperature. Our analytic approach enables us to formulate testable predictions on the non-analytic behavior of II-VV relation near the insulator-to-metal transition. Building on these successes, we propose an effective Ginzburg-Landau theory which paves the way to incorporating spatial fluctuations, and to bringing the theory closer to a realistic description of the resistive switchings in correlated materials.Comment: 18 pages, 9 figure
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