104,656 research outputs found
El conocimiento del patrimonio cultural portuario y marítimo. Una propuesta interdisciplinaria. La necesidad de identificar a sus actores.
No full textArticle paru en 2020 dans la revue argentine "Revista del Mar" qui porte le numéro 175. Il est écrit par Miguel Angel de Marco (h) et par Bruno Rohou. lien vers l'article
LA NACIONALIZACIÓN DEL PUERTO DE ROSARIO A LA LUZ DE NUEVOS DOCUMENTOS SOBRE LA MEDIACIÓN DE LA DIPLOMACIA FRANCESA Y ACTORES UNIVERSITARIOS
No full textVI Jornadas Interdisciplinarias e Internacionales de Estudios Portuarios – Rosario, 20 y 21 de agosto de 2015 Autores : Miguel Ángel De Marco (h) : CONICET-IDEHESI-Nodo IH – Email: [email protected] Bruno Rohou : Centre F. Viète-UBO de Brest, Francia – Email: [email protected] Introducción: El proceso que condujo a la nacionalización del puerto de Rosario en octubre de 1942, en el condicionante contexto de la Segunda Guerra Mundial, puso fin a una etapa de cuarenta años de ..
Ports nouveaux, Ports pionniers, XIVe-XXIe siècles
No full textPorts nouveaux, Ports pionniers, XIVe-XXIe siècles IVème COLLOQUE INTERNATIONAL DU RÉSEAU LA GOBERNANZA DE LOS PUERTOS ATLÁNTICOS (XIVe-XXIe SIÈCLES) Lorient - France 6-7-8 octobre 2016 Résumé de la communication : Auteurs :Bruno Rohou, Sylvain Laubé , Serge Garlatti , Jose Antonio Mateo , Miguel Ángel De Marco (h) L'objectif de cette communication est de présenter les résultats des travaux de recherche en humanités numériques et en histoire des sciences et des techniques développés dans le c..
LA NACIONALIZACIÓN DEL PUERTO DE ROSARIO A LA LUZ DE NUEVOS DOCUMENTOS SOBRE LA MEDIACIÓN DE LA DIPLOMACIA FRANCESA Y ACTORES UNIVERSITARIOS
No full textVI Jornadas Interdisciplinarias e Internacionales de Estudios Portuarios – Rosario, 20 y 21 de agosto de 2015 Autores : Miguel Ángel De Marco (h) : CONICET-IDEHESI-Nodo IH – Email: [email protected] Bruno Rohou : Centre F. Viète-UBO de Brest, Francia – Email: [email protected] Introducción: El proceso que condujo a la nacionalización del puerto de Rosario en octubre de 1942, en el condicionante contexto de la Segunda Guerra Mundial, puso fin a una etapa de cuarenta años de ..
Jean Rohou, Les procédés comiques dans “Andromaque”: effets et raison d’être
No full textRohou recupera il suggerimento di un remoto testo di H. Weinrich (1958), già ripreso da R. Tobin nel 1999 e da J. Emélina nel 2012. L’A. sostiene che negli anni 1666-67, a cui risale la composizione di Andromaque, l’eroismo non è più al centro dell’azione tragica: pertanto, molti dei comportamenti dei protagonisti della pièce raciniana potrebbero essere riletti alla luce di categorie della comicità, quali l’autoderisione e i travestimenti spettacolari e ridicoli. La lettura di Andromaque potr..
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Reintroduction of a characterized mit tRNAgly mutation into yeast mitochondria provides a new tool for the study of human neurodegenerative diseases
No full textWe report the identi®cation and characterization of a new mutation (ts9) in the
Saccharomyces cerevisiae mitochondrial genome, which was ®rst genetically mapped in
the tRNAgly region and further identi®ed by means of sequencing as consisting of a G to A
transition at position 30 in the tRNA. The mutation causes an almost complete
disappearance of mature tRNAgly, while a second mitochondrial mutation with a
compensatory C to T change restores it in normal quantities; this points to the importance
of the strong bond between bases 30 and 40 of the anticodon stem in the stabilization of the
tRNA. In addition to resulting in a clear-cut heat-sensitive phenotype, the ts9 mutation
creates a new EcoRV restriction site. Both properties were used as markers to monitor the
successful (re) introduction of the mutated allele into a wild-type mitochondrial genome
through biolistic transformation. The mutant frequency in the progeny as well as the
correct integration of the mutated allele at its proper site demonstrate the feasibility of this
method for creating and investigating speci®c mitochondrial tRNA mutations. The method
will provide important applications for the use of yeast as a model system of human
mitochondrial pathologies
The yeast counterpart of human 'MELAS' mutations cause mitochondrial dysfunction that can be rescued by overexpression of the mitochondrial translation factor EF-Tu
No full textWe have taken advantage of the similarity between human and
yeast (Saccharomyces cerevisiae) mitochondrial tRNALeu(UUR), and
of the possibility of transforming yeast mitochondria, to construct
yeast mitochondrial mutations in the gene encoding tRNALeu(UUR)
equivalent to the human A3243G, C3256T and T3291C mutations
that have been found in patients with the neurodegenerative disease
MELAS (for mitochondrial ‘myopathy, encephalopathy, lactic
acidosis and stroke-like episodes’). The resulting yeast cells (bearing
the equivalent mutations A14G, C26T and T69C) were defective for
growth on respiratory substrates, exhibited an abnormal mitochondrial
morphology, and accumulated mitochondrial DNA deletions
at a very high rate, a trait characteristic of severe mitochondrial
defects in protein synthesis. This effect was specific at least in the
pathogenic mutation T69C, because when we introduced A or G
instead of C, the respiratory defect was absent or very mild. All
defective phenotypes returned to normal when the mutant cells
were transformed by multicopy plasmids carrying the gene encoding
the mitochondrial elongation factor EF-Tu. The ability to create
and analyse such mutated strains and to select correcting genes
should make yeast a good model for the study of tRNAs and their
interacting partners and a practical tool for the study of pathological
mutations and of tRNA sequence polymorphisms
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe 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
No full textWe 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
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