1,720,973 research outputs found
"Vivere e non sapere. Fenomenologia della post-truth tra educazione e comunicazione. / To live and not Know. The Phenomenology of Post-Truth between Education and Communication""
No full textMultidimensional Learning. The Space-Time of Didactics /Apprendimenti multidimensionali. Lo spazio-tempo della didattica
No full textSome remarks on fixed points for maps which are expansive along one direction
Full text linkWe present some fixed point theorems for planar maps
which satisfy a property of path–expansion along a certain direction.
We also show some links between these fixed point theorems
and other recent results about covering relations and topological
horseshoes
Chaotic dynamics for maps in one and two dimensions: a geometrical method and applications to economics
No full textThis article describes a method — called here “the method of Stretching Along the Paths” (SAP) — to prove the existence of chaotic sets in discrete-time dynamical systems. The method
of SAP, although mathematically rigorous, is based on some elementary geometrical considerations
and is relatively easy to apply to models arising in applications. The paper provides a
description of the basic mathematical ideas behind the method, as well as three applications to economic models. Incidentally, the paper also discusses some questions concerning the definition of chaos and some problems arising from economic models in which the dynamics are defined only implicitly
Multiple periodic solutions and complex dynamics for second order ODEs via linked twist maps
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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
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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