Metrizable DH-spaces of the first category

We show that if a separable space X has a meager open subset containing a copy of the Cantor set 2^\omega, then X has $\frak{c}$ types of countable dense subsets. We suggest a generalization of the \lambda-set for non-separable spaces. Let X be an h-homogeneous \Lambda-set. Then X is densely homogeneous and (X \setminus A) is homeomorphic to X for every \sigma-discrete A \subset X

Narratives of change and citizen participation in modern political campaigning: The origins of the Trump movement

This article offers insights into how the storytelling aspects of the Donald Trump presidential campaign of 2016 contributed to the rise of the Trump movement and paved his way to the White House. With 50 Trump speeches being analysed, the study reconstructs the narrative Donald Trump communicated to the target audience on his way to the highest office. Exploring the idea of Donald Trump as a storyteller, the article discusses how the ideology of the Trump base was constructed and an eagerness to participate was ignited by the narrative. Methodologically, the article derives the seven principles of political storytelling from its theoretical framework and applies them as an analytical frame to the analysis of the narrative structure of the Trump campaign. The seven principles suggest that the political narrative benefits from being targeted, empathic, happy-ending, consistent, well delivered, well communicated and engaging

Wave turbulence in the two-layer ocean model

This paper looks at the two-layer ocean model from a wave turbulence perspective. A symmetric form of the two-layer kinetic equation for Rossby waves is derived using canonical variables, allowing the turbulent cascade of energy between the barotropic and baroclinic modes to be studied. It turns out that energy is transferred via local triad interactions from the large-scale baroclinic modes to the baroclinic and barotropic modes at the Rossby deformation scale. From there it is then transferred to the large-scale barotropic modes via a nonlocal inverse transfer. Using scale separation a sys- tem of coupled equations were obtained for the small-scale baroclinic component and the large-scale barotropic component. Since the total energy of the small-scale component is not conserved, but the total barotropic plus baroclinic energy is conserved, the baroclinic energy loss at small scales will be compensated by the growth of the barotropic energy at large scales. It is found that this transfer is mostly anisotropic and mostly to the zonal component

Anomalous spectral laws in differential models of turbulence

International audienceDifferential models for hydrodynamic, passive-scalar and wave turbulence given by nonlinear first- and second-order evolution equations for the energy spectrum in the $k$-space were analysed.Both types of models predict formation an anomalous transient power-law spectra.The second-order models were analysed in terms of self-similar solutions of the second kind, and a phenomenological formula for the anomalous spectrum exponent was constructed using numerics for a broad range of parameters covering all known physical examples. The first-order models were examined analytically, including finding an analytical prediction for the anomalous exponent of the transient spectrum and description of formation of the Kolmogorov-type spectrum as a reflection wave from the dissipative scale back into the inertial range. The latter behaviour was linked to pre-shock/shock singularities similar to the ones arising in the Burgers equation.Existence of the transient anomalous scaling and the reflection-wave scenario are argued to be a robust feature common to the finite-capacity turbulence systems. The anomalous exponent is independent of the initial conditions but varies for for different models of the same physical system

Das Fernsehen als Manipulationsmittel im System Putin

Fernsehen ist das primäre Medium in Russland, das in der russischen Bevölkerung höchstes Vertrauen genießt. Das russische Fernsehen übernimmt die Rolle einer Werbeagentur zur Regimelegitimierung, zur Propagierung von Weltanschauungen der herrschenden Elite, zur Diffamierung von Regime-Kritikern. Spätestens seit der Ukraine-Krise nimmt die Fernsehberichterstattung immer mehr Züge eines Manipulationsmittels zur Mobilisierung der Bevölkerung an