1,721,166 research outputs found
Primitive iteration and unary functions
No full textProgramming practice suggests a general notion of primitive iteration which subsumes the for-until-do construct as well as all known primative iteration operators. This leads to new iterative characterizations of primitive computable functions usable in computer science
Non-Deterministic Closure Theory and Universal Arrows
No full textTraditional closure theory discusses the closure operations on orders with graph-theoretic methods, or the reflectors on skeletal categories with category-theoretic methods. Both approaches are confined, like most of classical mathematics, to total and deterministic operations. So traditional closure theory makes it possible to define the semantics of the while-do commands only for terminating and deterministic programming. This paper outlines a closure theory for relations which transcend totality and determinism. For the sake of conciseness, the language used is that of graph theory but the methods are category-theoretic and some hints are offered for a possible translation into the language of category theory. Our basic idea is that closure relations consist of universal arrows in the sense of category theory. The new closure theory is appropriate for defining a semantics of the while-do commands both for terminating, deterministic programming and for non-terminating, non-deterministic programming
Recensione a «Dulcis alebat Parthenope». Memorie dell’antico e forme del moderno all’ombra dell’Accademia Pontaniana, a cura di G. Germano - M. Deramaix, Napoli, Paolo Loffredo, 2020, pp. 456
No full textRecensione al vol. «Dulcis alebat Parthenope». Memorie dell’antico e forme del moderno all’ombra dell’Accademia Pontaniana, a cura di G. Germano - M. Deramaix, Napoli, Paolo Loffredo, 2020, pp. 456
Fixed Point Iteration
No full textIteration seems to play a fundamental role in learning theory - as everywhere else. Since neurons need a rather long time to reach a stable state, Caianiello's Paradox suggests that special actions cause the iteration of state transitions until a stable neural state is reached. Now, a stable state is a fixed point for any transition function; so we may call the iteration above, we want to discuss, "fixed point iteration"
Recensione a Giovanni Gioviano Pontano, De bello Neapolitano, a cura di G. Germano, A. Iacono, F. Senatore, Firenze, SISMEL-Edizioni del Galluzzo, 2020, pp. LVIII-604
No full textRecensione a Giovanni Gioviano Pontano, De bello Neapolitano, a cura di G. Germano, A. Iacono, F. Senatore, Firenze, SISMEL-Edizioni del Galluzzo, 2020, pp. LVIII-604. Si tratta della prima edizione critica della principale opera storiografica dei Giovanni Pontano, apparsa nel 2020 nella collana Il ritorno dei Classici nell'Umanesimo. Edizione Nazionale dei Testi della Storiografia Umanistica, pubblicata a Firenze dalla SISMEL-Edizioni del Galluzzo.Review to Giovanni Gioviano Pontano, De bello Neapolitano, edited by G. Germano, A. Iacono, F. Senatore, Firenze, SISMEL-Edizioni del Galluzzo, 2020, pp. LVIII-604. This is the first critical edition of the main historiographical work by Giovanni Pontano, which appeared in 2020 in the series Il ritorno dei Classici nell'Umanesimo. Edizione Nazionale dei Testi della Storiografia Umanistica, published in Florence by SISMEL-Edizioni del Galluzzo
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
L’esordio del De hortis Hesperidum di Giovanni Pontano tra riflessioni teoriche e prassi della ricezione dei modelli
No full textIl saggio analizza l'esordio del De hortis Hesperidum nelle sue implicazioni intertestuali ed ideologich
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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