1,722,178 research outputs found
Infección puerperal. Consideraciones sobre su profilaxia y tratamiento : Tesis inaugural
No full textFil: Alvarez, Luis. Universidad de Buenos Aires. Facultad de Medicina. Buenos Aires, Argentina.A la cabeza de portada: Universidad Nacional de Buenos Aires. Facultad de Ciencias Médicas. - Incluye nómina de Catedráticos y Asignaturas. Tesis con dedicatori
Croissance économique et originalité nationale
No full textLopez Alvarez Luis. Croissance économique et originalité nationale. In: Tiers-Monde, tome 8, n°32, 1967. L'Espagne à l'heure du développement. pp. 1069-1092
Incentivos Colectivos y Política Exterior : El concepto de "amenaza terrorista" como fundamento de las intervenciones militares del gobierno de los Estados Unidos durante el periodo 1990-2015
Full text linkEl presente trabajo parte de la exploración de los siguientes interrogantes: ¿Cómo realiza el gobierno norteamericano las construcciones conceptuales que justifican sus intervenciones militares? ¿Cual es la intención y la extensión de estos conceptos? ¿De que manera logra que los mismos se constituyan en incentivos colectivos para la sociedad? ¿Cuanto influyen los ciclos económicos de raíz política? ¿Que relaciones de intercambio se producen entre los sectores público y privado? ¿Que espacio queda para la acción política? Instalándonos en una perspectiva epistemológica se buscara transitar las problemáticas de esta temática poniendo en valor la importancia de la deconstrucción conceptual para dar cuenta de los diferentes aspectos de esta particular forma de hegemonía que tiende a ser universalFil: Alvarez, Luis. Facultad de Ciencias Sociales, Universidad de Buenos Aires
Image quantization by nonlinear smoothing
No full textWe present a quantization technique based on the partial differential equation (Equation presented) where (Equation presented) represents the derivative of the function u in the direction orthogonal to the gradient, Gσ is a linear convolution kernel, g is a decreasing function and f(s,t) is a lipschitz function. We assume that when t tends to +∞, f(s, t) tends uniformly to a function f∞(s) which has a finite number of zeros with negative derivative which act as atractors in the system and represent the quantization levels. The location of the zero-crossing of the function f∞(s) depends on the histogram of the initial image given by u0. We introduce a new energie based in the Lloyd model to compute the quantizer levels. We develop a numerical scheme to discretize the above equation and we present some experimental results.19218
Image quantization using reaction-diffusion equations
No full textIn this paper we present an image quantization model based on a reaction-diffusion partial differential equation. The quantized image is given by the asymptotic state of this equation. Existence and uniqueness of the solution are proved in the framework of viscosity solutions. We introduce an L∞ stable algorithm in order to compute numerically the solution of the equation, and some experimental results are shown. A new energy functional based on the classical Lloyd method is used to compute the quantizer codewords.1751530,829Q1SCI
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
De la invisibilización a la visibilización de la diversidad : Políticas públicas, géneros y sexualidades durante el periodo 2003-2013 en Argentina
Full text linkTomando como punto de partida el cambio de gobierno en Argentina a partir del año 2003, el presente trabajo explora las políticas públicas en torno a géneros y diversidad que se produjeron durante el periodo 2003-2013. En líneas generales, cada una de estas políticas públicas suponía un doble reto: resolver las deudas pendientes y enfrentar los desafíos futuros que planteaba la inauguración de un nuevo siglo. Los intentos por abordar este doble reto han demostrado toda su complejidad y a partir de los resultados obtenidos, mucho se ha debatido respecto del carácter de estas políticas publicas: si debían ser universales, regionales, locales o glocales (pensamiento global - acción local). El camino recorrido durante el periodo en cuestión ha dejado en claro algo: estas políticas públicas deben poner en el centro de la agenda estatal las cuestión de género y diversidad como los ejes dinamizadores que permitan ocuparnos de manera simultánea del doble reto antes citado: resolver las deudas pendientes y superar los desafíos futurosFil: Alvarez, Luis. Facultad de Ciencias Sociales, Universidad de Buenos Aires
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