Optimal synthesis of liquid-liquid multistage extractors

Presentation in the 11th European Symposium of the Working Party on Computer Aided Process Engineering, Kolding, Denmark, May 27-30, 2001.

Literatura dramática contemporánea (1950-2000)

El trabajo quiere ser una visión sintética que describa la evolución de la literatura dramática catalana de la segunda mitad del siglo XX y la primera década del actual, desde los primeros años de la dictadura franquista, en los cuales el teatro en catalán fue prohibido, pasando por el teatro independiente, y los diversos caminos emprendidos durante la etapa democrática o diferentes apuestas del teatro actual, un momento en el cual la escena catalana hace años que es un valor en alza. Se apuntan tanto los autores más consolidados y referentes de la moderna escritura, como los dramaturgos más maduros de las nuevas generaciones actuales. Unos y otros son autores ampliamente representados y traducidos a diversas lenguas.

Comunicación para la inclusión social de minorías. La Clase Mágica, un modelo de intervención para el cambio social

Las minorías culturales y étnicas son con frecuencia los grupos más desfavorecidos en términos sociales y económicos debido a su falta de representación institucional. El objetivo de este artículo es proponer un modelo de intervención capaz de aumentar el poder de participación de una minoría a través de la comunicación horizontal con otras identidades mayoritarias. Los resultados del estudio de caso del programa socioeducativo La Clase Mágica, para el que se utiliza una metodología eminentemente cuantitativa a partir de cuestionario, demuestran que estos aspectos contribuyen a que los mexicanos de primera y segunda generación en el sur de California desarrollen capacidades clave para el empoderamiento y la inclusión social. Además, el programa impactó en un factor determinante para que una comunidad consiga ganar poder de acción y voz suficiente para influir en las instituciones sociales: los apoyos externos.

Nostalgic representation of reality in television fiction: an empirical study based on the analysis of the Spanish television series Cuéntame cómo pasó

The Spanish transition from dictatorship to democracy is often described as an example of negotiation or agreement between the elites (Sánchez Cuenca and Aguilar, 2009: 433). Journalistic and political elites, aware of their important historical role, agreed a consensus on certain issues (democracy, constitution, amnesty) or characters (King Juan Carlos I), in order to ensure the stability of the democratic process (Zugasti, 2007, 2008). Television, which articulates the discourse of the masses, has been one of the basic means used to illustrate the development. Among the highlights of recent major audiovisual content, Cuéntame cómo pasó (2001-present) -a TV-series designed to explain changes with a nostalgic tone in Spanish society since 1968 until today- stands out. By choosing a random sample of episodes for this research we propose to verify the validity of the representation of the political process which contextualizes the series. By analyzing many elements, such as the opinions of the main characters, their personal, political and geographical situations, we try to show the construction of a focal point that sanctifies the official version. We also stress the pacifying and nostalgic tone, which constructs stereotypes and taboos about the process and which characterizes this series as a symbolic culmination of the democratization undertaken by the elites.

The representation of the world in national Arab news agencies: an exploration of (trans)national networks in the official Arab media

The purpose of this paper is to draw a map of the representation of the world and of Arab states as reflected by the countries of the region. To do so, we have analysed the news (4,093 news randomly collected on February and August 2005) produced by the governments of the Arab states through their national news agencies. Several regional and world maps had been constructed to show the official Arab representation of the World, the Arab countries conflict agenda, the persistence of colonial ties (with the European metropolis) and the emergence of new relationships (Asian countries). The representation of the world that appeared in the analysis focuses its interest on the USA, the war in Iraq, the Israel-Palestine conflict, the United Kingdom, France, and Iran. The Arab regional powers organise the flow of information (Saudi Arabia and Egypt) and the colonial past determines the current structure of communication (French-speaking bloc and English-speaking bloc).

On the stability of the Motzkin representation of closed convex sets

A set is called Motzkin decomposable when it can be expressed as the Minkowski sum of a compact convex set with a closed convex cone. This paper analyzes the continuity properties of the set-valued mapping associating to each couple (C,D) formed by a compact convex set C and a closed convex cone D its Minkowski sum C + D. The continuity properties of other related mappings are also analyzed.

Graphical Representation of the Changes of Sector for Particular Cases in the Ponchon Savarit Method

A graphical and systematic analysis of particular cases where the compositions of the streams developed in the rectification column coincide with one of the vapor (yGFk) or liquid (xGFk) portions generated from the GFk can be found in this material (i.e.: yGFk=yk+1,1 or xGFk=xk,NTk).

Graphical User Interface (GUI) for the representation of GM surfaces (using the NRTL model) and curves, including tie-lines and Hessian matrix

A single and very easy to use Graphical User Interface (GUI- MATLAB) based on the topological information contained in the Gibbs energy of mixing function has been developed as a friendly tool to check the coherence of NRTL parameters obtained in a correlation data procedure. Thus, the analysis of the GM/RT surface, the GM/RT for the binaries and the GM/RT in planes containing the tie lines should be necessary to validate the obtained parameters for the different models for correlating phase equlibrium data.