Dos proyectos de escala metropolitana de fin de siglo XX en México: la Plaza Tapatía en Guadalajara y la Macro Plaza en Monterrey

El texto siguiente analiza las experiencias de dos proyectos de gran impacto urbano de la década de los 80 del siglo XX en dos ciudades mexicanas, Guadalajara y Monterrey. En ambos casos se refieren los antecedentes en cuanto a la planeación urbana y los distintos proyectos para regenerar los centros históricos de dichas ciudades. También se exponen las consideraciones de las autoridades locales respecto a la imagen desgastada y deteriorada de los cascos antiguos, a la hora de plantear intervenciones a gran escala que implicaron la demolición de edificios y espacios de origen colonial y del siglo XIX. Los resultados son contradictorios: se ganó un gran espacio público, pero a la vez se sufrió la pérdida de la huella de las trazas originales de las ciudades y no pocos edificios de valor patrimonial. Ambos proyectos fueron resultado de decisiones políticas autoritarias, sin ninguna consulta a los habitantes de Guadalajara y Monterrey, simplemente mediante decreto de sus gobernantes.This article analyzes the experiences of two projects which had a major urban impact in the 1980s on two Mexican cities, Guadalajara and Monterrey. In both cases, the background behind urban planning and the different projects to regenerate the historic city centers are discussed. The considerations of the local authorities regarding the tired and deteriorated image of the old downtown area are also presented, outlining the large-scale interventions that involved the demolition of colonial and 19th-century buildings and spaces. The results are contradictory: on one hand, a large public space was gained, but at the same time, the original city layout and many heritage buildings were lost. Both projects were the result of authoritarian political decisions, by governor decrees, without any consultation with the inhabitants of Guadalajara and Monterrey.O texto analisa as experiências de dois projetos de grande impacto urbano nos anos de 1980 em duas cidades mexicanas, Guadalajara e Monterrey. Em ambos os casos, referem-se aos antecedentes do planeamento urbano e aos diferentes projetos de regeneração dos centros históricos destas cidades. Mostra também as considerações das autoridades locais com relação à imagem desgastada e deteriorada dos cascos antigos, que propuseram intervenções em grande escala que envolveram a demolição de edifícios e espaços de origem colonial e do século XIX. Os resultados são contraditórios: por um lado, ganhou-se um grande espaço público, mas ao mesmo tempo, perdeu-se a disposição original das cidades e muitos edifícios de valor patrimonial. Ambos os projetos são o resultado de decisões políticas autoritárias sem qualquer consulta com os habitantes de Guadalajara e Monterrey, simplesmente por meio de decretos de seus governantes

Xavier Villaurrutia como crítico de la literatura mexicana

1 archivo PDF (15 páginas). fhtrigintaseptemEl autor describe la actividad del poeta “sin grupo” como crítico en el ámbito literario, particularmente con relación a la literatura mexicana. Con base en una metodología no impresionista, halla algunas limitaciones en la actividad crítica de Villaurrutia, y asimismo, como en cualquier crítico, exaltados amores y odios por algunos autores mexicanos. De la Mora destaca la penuria de Xavier Villaurrutia para referirse a los propios personajes femeninos y la contrastante sagacidad para delimitar a los de otros autores

Los días terrenales en "La región más transparente"

1 archivo PDF (10 páginas). fhquadragintatresEn este artículo de ofrecen evidencias derivadas de la teoría del discurso que demuestran que el canon literario mexicano ha logrado una excelente novela, como es “Los días terrenales” cuyas características discursivas la situarían en un nivel igual o superior a la denominada novela de la ciudad, me refiero a “la región más transparente. PALABRAS CLAVE: Narrativa mexicana. Ciudad de México. Carlos Fuentes. José Revueltas. La región más transparente. Los días terrenale

Perspectivas de la ciencia abierta. Un estado de la cuestión para una política nacional en Colombia

Objective:. To review the state of open science at a global level and establish a broad theoretical and conceptual framework with which to make general recommendations (challenges and perspectives) for a national policy on open science in Colombia. Methodology: A systematic review of the literature from both open and closed sources of information and content analysis to select the most significant contributions and formulate new theoretical and conceptual contributions. Results: At the general level, it was possible to build a theoretical-conceptual framework to describe open science and identify some challenges and perspectives related to the construction of a national policy on open science. At the specific level, as theoretical and conceptual contributions to designing a policy for open science for Ibero-America and at a global level, the article offers: 1) a comprehensive definition of open science based on authoritative international contributions; 2) an open science taxonomy translated into Spanish; 3) a timeline chronicling open science in the last three decades; and (4) an identification of the status of open science at the level of national policy or specific and prominent cases or projects in some countries

CO2 strong chemisorption as an estimate of coal char gasification reactivity

ABSTRACT: In this article, coal char gasification reactivity was correlated with the strong chemisorption of CO2 at 3008C. Chars of as-received, demineralized, K and Fe loaded coals were prepared at 8008C, under high purity nitrogen. The CO2 chemisorption method described in this article allows differentiation between two types of chemisorption that takes place at low temperatures: strong CO2 chemisorption (irreversible) which is related to the presence of the active inorganic components of the char, and weak CO2 chemisorption (reversible) which is because of the organic matter of the char. The char doped with K showed the highest CO2 strong chemisorption and at the same time the highest reactivity in the CO2 gasification, while the char loaded with Fe had the highest amount of weak chemisorption. It was found that total chemisorption (weak 1 strong) at 3008C depends on the CO2 pressure of the analysis. The reactivity of the CO2 gasification of the char was normalized using the value of the amount of CO2 strongly chemisorbed at 3008C. q 1999 Elsevier Science Ltd. All rights reserved

Presentación : lenguas amerindias y lingüística

1 archivo PDF (10 páginas). fhundequinquagintaEn términos generales, las investigaciones lingüísticas durante el siglo XX dieron prioridad a los estudios de la lengua entendida como un sistema autónomo. Sin embargo, en las últimas décadas del siglo, apareció en el escenario de los estudios de esta disciplina, un marco que concibe las lenguas como un medio de interacción comunicativo entre usuarios Observar los fenómenos de la lengua desde una u otra perspectiva acarrea resultados disímiles, notoriamente, y es sobre este tema que versan los artículos del número 49 de Fuentes Humanísticas

Using context to improve protein domain identification

<p>Abstract</p> <p>Background</p> <p>Identifying domains in protein sequences is an important step in protein structural and functional annotation. Existing domain recognition methods typically evaluate each domain prediction independently of the rest. However, the majority of proteins are multidomain, and pairwise domain co-occurrences are highly specific and non-transitive.</p> <p>Results</p> <p>Here, we demonstrate how to exploit domain co-occurrence to boost weak domain predictions that appear in previously observed combinations, while penalizing higher confidence domains if such combinations have never been observed. Our framework, Domain Prediction Using Context (dPUC), incorporates pairwise "context" scores between domains, along with traditional domain scores and thresholds, and improves domain prediction across a variety of organisms from bacteria to protozoa and metazoa. Among the genomes we tested, dPUC is most successful at improving predictions for the poorly-annotated malaria parasite <it>Plasmodium falciparum</it>, for which over 38% of the genome is currently unannotated. Our approach enables high-confidence annotations in this organism and the identification of orthologs to many core machinery proteins conserved in all eukaryotes, including those involved in ribosomal assembly and other RNA processing events, which surprisingly had not been previously known.</p> <p>Conclusions</p> <p>Overall, our results demonstrate that this new context-based approach will provide significant improvements in domain and function prediction, especially for poorly understood genomes for which the need for additional annotations is greatest. Source code for the algorithm is available under a GPL open source license at <url>http://compbio.cs.princeton.edu/dpuc/</url>. Pre-computed results for our test organisms and a web server are also available at that location.</p