197,337 research outputs found
Imprimere segni. Dialogo sulla parola “insegnamento”
No full textDialogo con il Prof. Modugno sulla libertà di insegnamento e sulle sue implicazioni sul piano costituzional
Critica, verità, identità umana: attualità de "L'interiorità oggettiva" di Sciacca
No full textDiscussione sull'attualità dei temi chiave de "L'interiorità oggettiva" opera centrale del pensiero di M.F. Sciacc
The geometry of Newton's law and rigid systems
No full textsummary:We start by formulating geometrically the Newton’s law for a classical free particle in terms of Riemannian geometry, as pattern for subsequent developments. For constrained systems we have intrinsic and extrinsic viewpoints, with respect to the environmental space. Multi–particle systems are modelled on -th products of the pattern model. We apply the above scheme to discrete rigid systems. We study the splitting of the tangent and cotangent environmental space into the three components of center of mass, of relative velocities and of the orthogonal subspace. This splitting yields the classical components of linear and angular momentum (which here arise from a purely geometric construction) and, moreover, a third non standard component. The third projection yields a new explicit formula for the reaction force in the nodes of the rigid constraint
Nowcasting inflation using high frequency data
No full textThis paper proposes a methodology to nowcast and forecast inflation using data with sampling frequency higher than monthly. The nowcasting literature has been focused on GDP, typically using monthly indicators in order to produce an accurate estimate for the current and next quarter. This paper exploits data with weekly and daily frequency in order to produce more accurate estimates of inflation for the current and followings months. In particular, this paper uses the Weekly Oil Bulletin Price Statistics for the euro area, the Weekly Retail Gasoline and Diesel Prices for the US and daily World Market Prices of Raw Materials. The data are modeled as a trading day frequency factor model with missing observations in a state space representation. For the estimation we adopt the methodology exposed in Banbura and Modugno (2010). In contrast to other existing approaches, the methodology used in this paper has the advantage of modeling all data within a unified single framework that, nevertheless, allows one to produce forecasts of all variables involved. This offers the advantage of disentangling a model-based measure of ”news” from each data release and subsequently to assess its impact on the forecast revision. The paper provides an illustrative example of this procedure. Overall, the results show that these data improve forecast accuracy over models that exploit data available only at monthly frequency for both countries. JEL Classification: C53, E31, E37Factor models, forecasting, inflation, Mixed Frequencies
Lingue, letterature e culture migranti
No full textIl volume raccoglie i contributi\ua0presentati al primo Seminario organizzato nel 2014 a Firenze dalla Sezione di\ua0Studi Interculturali del Dipartimento di Lingue, Letterature e Studi\ua0Interculturali sul tema “Lingue, letterature e\ua0culture migranti”. I saggi – di\ua0autrici provenienti dall’area di studi di germanistica e di filologia\ua0germanica, di lusitanistica, ispanoamericanistica, sinologia e comparatistica –\ua0prendono in analisi vari aspetti del tema della\ua0‘migrazione’ nella molteplicit\ue0\ua0delle sue realizzazioni: accanto ad osservazioni strettamente linguistiche, indagano\ua0sul fenomeno del contatto interculturale sul piano sociale, storico, letterario\ua0e antropologico
Interpretare "Volare" La ricerca fotografica di Michele Coccioli
No full textLe interpretazioni fotografiche di Michele Coccioli, della nota canzone di Domenico Modugno
Collective oscillations of two colliding bose-einstein condensates
No full textTwo
87
Rb
condensates (
F
=
2
,
m
f
=
2
, and
m
f
=
1
) are produced in highly displaced harmonic traps and the collective dynamical behavior is investigated. The mutual interaction between the two condensates is evidenced in the center-of-mass oscillations as a frequency shift of
6.4
(
3
)
%
. Calculations based on a mean-field theory well describe the observed effects of periodical collisions both on the center-of-mass motion and on the shape oscillations
Preface
No full textDissemination of scientific results is an important and necessary component of research activity. Nowadays research asks to be widely diffused and shared in a larger community in the effort to demonstrate its innovation and originality, so to enlarge network and obtain funds to keep working. In this context, PhD students, as part of scientific community and young researchers in training, have to understand the rule of publications to define the best strategy for the dissemination of their research. The present book, through the experiences of national and international PhD candidates, PhDs and Professors, is a contribute in the current opened debate on the most effective strategies and related tools to design specific actions, to highlight and improve the peculiar qualities and disciplines of each research
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