1,721,069 research outputs found
Al di là della coscienza interna del tempo. L'ispirazione husserliana della "diacronia" nel pensiero di Levinas
Full text linkLa ricerca elaborata consiste nell’analisi della fenomenologia del tempo di Levinas con l’intento di mostrarne l’ispirazione husserliana. Questa è interpretata nel senso di fedeltà alla vocazione fenomenologica di risalita al senso autentico del tempo e si esplica nel superamento degli enigmi della coscienza interna del tempo che Levinas riscontra nei suoi commenti, quali l’auto-costituzione del flusso, lo statuto dell’intenzionalità interna come sentire e il senso del rapporto tra ritenzione, impressione originaria e protenzione. Dunque, al fine di valorizzare la profondità della riflessione levinassiana sul tempo e mostrarne la specificità fenomenologica la mia tesi di dottorato si presenta come un’analisi testuale e descrittiva che correla, in ciascuna fase dell’opera dell’autore, lo sviluppo dell’interpretazione levinassiana della fenomenologia husserliana della coscienza interna del tempo e delle descrizioni elaborate da Levinas, culminante nel concetto di “diacronia”. Sarà così possibile mostrare come la fenomenologia del tempo di Levinas approfondisca l’intreccio d’ispirazione husserliana tra sentire, tempo e alterità. I principali commenti sulla coscienza interna del tempo delineano quindi la partizione della ricerca in tre capitoli: il primo indaga l’analisi della fenomenologia del tempo tra intenzionalità e affettività nella produzione degli anni Trenta, mentre il secondo il senso del presente, del flusso e della differenza temporale tra il 1940 e il 1961 e, infine, il terzo l’introduzione e l’elaborazione della nozione di diacronia
Nonzero-sum stochastic differential games between an impulse controller and a stopper
Full text linkWe study a two-player nonzero-sum stochastic differential game, where one player controls the state variable via additive impulses, while the other player can stop the game at any time. The main goal of this work is to characterize Nash equilibria through a verification theorem, which identifies a new system of quasivariational inequalities, whose solution gives equilibrium payoffs with the correspondent strategies. Moreover, we apply the verification theorem to a game with a one-dimensional state variable, evolving as a scaled Brownian motion, and with linear payoff and costs for both players. Two types of Nash equilibrium are fully characterized, i.e. semi-explicit expressions for the equilibrium strategies and associated payoffs are provided. Both equilibria are of threshold type: in one equilibrium players’ intervention are not simultaneous, while in the other one the first player induces her competitor to stop the game. Finally, we provide some numerical results describing the qualitative properties of both types of equilibrium
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
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
- …
