1,721,056 research outputs found
Il corpo delle meraviglie: l'isteria e i fantasmi della sensibilità
No full textIl saggio è dedicato all’insorgere, fra Settecento e Ottocento, di un modello neurologico e meccanicistico dell’isteria, che da un lato risponde alla volontà di radicare la malattia nelle disfunzioni dell’organismo, e dall’altro sospinge medicina e scienza verso ipotesi occulte e magico-esoteriche, convertendo l’isteria in un fenomeno medianico. Negli stessi anni in cui Freud lavora sui sintomi isterici, esplode in Europa un singolare intreccio fra medici, ipnotizzatori e medium, che attira gli ambienti intellettuali trasformando il corpo isterico nell’emblema di una nuova estetica (Rodin, Rilke, Duchamp), e nel prototipo di un’opera d’arte che crea imitando le forme della malattia (Benjamin)
A MODELING EVALUATION OF THE EFFECT OF CHLORINE ON THE FORMATION OF PARTICULATE MATTER IN COMBUSTION
No full textModeling the rich combustion of aliphatic hydrocarbons
No full textA new kinetic mechanism has been developed for the formation of benzene and high-molecular-mass aromatic compounds in rich flames of aliphatic hydrocarbons. The kinetic scheme emphasizes both the role of resonantly stabilized radicals in the growth of aromatics and the standard acetylene addition mechanism. The model has been used to simulate premixed flames of acetylene and ethylene where the concentrations of radicals and high-molecular-mass compounds are known. The kinetic scheme accurately reproduces the concentrations and trends of radicals and stable species including benzene and total aromatic compounds. Formation of benzene is controlled by propargyl radical combination. The model reproduces well the profiles of benzene for the different hydrocarbons and in the different operating conditions. Key reactions in the formation of high-molecular-mass aromatics are the combinations of resonantly stabilized radicals, including cyclopentadienyl self-combination, propargyl addition to benzyl radicals, and the sequential addition of propargyl radicals to aromatic rings. The predicted amounts of total aromatic compounds increase at the flame front and remain constant in the postoxidation zone of the flames, attaining the final concentrations of soot, in slightly-sooting conditions. As a consequence, the carbonaceous species which contribute to soot formation are already present at the flame front as high-molecular-mass structures. Soot is formed through dehydrogenation and aromatization of the high-molecular-mass compounds, rather than by surface growth
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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