1,721,255 research outputs found
Bernardini C., Jarsitani C., Vicentini M. (Éds) (1995). Thinking Physics for Teaching. New York, Plenum Press
No full textCaillot Michel. Bernardini C., Jarsitani C., Vicentini M. (Éds) (1995). Thinking Physics for Teaching. New York, Plenum Press. In: Didaskalia, n°12, 1998. Enseigner les sciences à l'Université. pp. 153-154
Media, propaganda e rivoluzione. La Francia e la diffusione internazionale del bolscevismo (1917-1923)
No full text
Boundary value problems for Choquard equations
Full text linkWe consider the following nonlinear Choquard equation −Δu+Vu=(Iα∗|u|p)|u|p−2uinΩ⊂RN, where N≥2, p∈(1,+∞), V(x) is a continuous radial function such that infx∈ΩV>0 and Iα(x) is the Riesz potential of order α∈(0,N). Assuming Neumann or Dirichlet boundary conditions, we prove existence of a positive radial solution to the corresponding boundary value problem when Ω is an annulus, or an exterior domain of the form RN∖Br(0) ̄. We also provide a nonexistence result: if p≥[Formula presented] the corresponding Dirichlet problem has no nontrivial regular solution in strictly star-shaped domains. Finally, when considering annular domains, letting α→0+ we recover existence results for the corresponding local problem with power-type nonlinearity
Ergodic Mean-Field Games with aggregation of Choquard-type
Full text linkWe consider second-order ergodic Mean-Field Games systems in the whole space RN with coercive potential and aggregating nonlocal coupling, defined in terms of a Riesz interaction kernel. These MFG systems describe Nash equilibria of games with a large population of indistinguishable rational players attracted toward regions where the population is highly distributed. Equilibria solve a system of PDEs where an Hamilton-Jacobi-Bellman equation is combined with a Kolmogorov-Fokker-Planck equation for the mass distribution. Due to the interplay between the strength of the attractive term and the behavior of the diffusive part, we will obtain three different regimes for the existence and non existence of classical solutions to the MFG system. By means of a Pohozaev-type identity, we prove nonexistence of regular solutions to the MFG system without potential in the Hardy-Littlewood-Sobolev-supercritical regime. On the other hand, using a fixed point argument, we show existence of classical solutions in the Hardy-Littlewood-Sobolev-subcritical regime at least for masses smaller than a given threshold value. In the mass-subcritical regime we show that actually this threshold can be taken to be +∞
Isolation and characterization of five microsatellite loci in Dolichopoda cave crickets (Orthoptera Rhaphidophoridae)
Full text linkFive microsatellite loci are described for the cave cricket genus Dolichopoda. Preliminary data on allelic variation of these loci are presented for one population of D. schiavazzii and one population of D. laetitiae to test their usefulness in fine-scale studies of the genetic aspect of cave colonization. Cross-species amplifications were carried out in four other Dolichopoda species and in two species belonging to another cave cricket genus (Troglo-philus) to test the potential use of these microsatellite markers in studies of both congeneric species and species belonging to the same family
La coscienza illustrata: per una storia della mediatizzazione dell’interiorità
No full textIl saggio illustra le rappresentazioni della coscienza nell'emblematica gesuitica di età moderna
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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