1,721,425 research outputs found
Mobilité résidentielle et allongement des distances de migrations alternantes dans la région urbaine de Lyon
No full textNous nous proposons d'étudier l'impact des migrations résidentielles sur l'allongement des distances domiciles-travail dans la grande région urbaine lyonnaise à partir des recensements de 1975 et de 1990, en reprenant certains résultats d'une recherche (ANDAN Odile, POCHET Pascal, ROUTHIER Jean-Louis, SCHEOU Bernard. Stratégies de localisation résidentielle des ménages et mobilité domicile-travail. Rapport pour le compte de la DRAST. 1999), sur la dynamique d'accroissement des distances domicile-travail en milieu urbain et périurbain
Mobilité résidentielle et allongement des distances de migrations alternantes dans la région urbaine de Lyon
No full textNous nous proposons d'étudier l'impact des migrations résidentielles sur l'allongement des distances domiciles-travail dans la grande région urbaine lyonnaise à partir des recensements de 1975 et de 1990, en reprenant certains résultats d'une recherche (ANDAN Odile, POCHET Pascal, ROUTHIER Jean-Louis, SCHEOU Bernard. Stratégies de localisation résidentielle des ménages et mobilité domicile-travail. Rapport pour le compte de la DRAST. 1999), sur la dynamique d'accroissement des distances domicile-travail en milieu urbain et périurbain
Mobilité résidentielle et allongement des distances de migrations alternantes dans la région urbaine de Lyon
No full textNous nous proposons d'étudier l'impact des migrations résidentielles sur l'allongement des distances domiciles-travail dans la grande région urbaine lyonnaise à partir des recensements de 1975 et de 1990, en reprenant certains résultats d'une recherche (ANDAN Odile, POCHET Pascal, ROUTHIER Jean-Louis, SCHEOU Bernard. Stratégies de localisation résidentielle des ménages et mobilité domicile-travail. Rapport pour le compte de la DRAST. 1999), sur la dynamique d'accroissement des distances domicile-travail en milieu urbain et périurbain
Mobilité de quartier, mobilité de ville ? Les déplacements quotidiens des pauvres à Ouagadougou et Bamako
No full textNeighborhood or city mobility ? The daily mobility of the poor in Ouagadougou and Bamako.
High rates of demographic growth, plus weak and irregular incomes are the main characteristics of urban populations in sub-Saharan Africa. The spatial development resulting from this situation has been rather uncontrolled and a double phenomenon has appeared, on the one hand, a high increase of population density in some zones and on the other hand a rapid and anarchical extension of urban space. Using data collected from two household surveys carried out in Bamako and Ouagadougou, the aim of this article is to analyse the daily mobility of the mostly disadvantaged urban populations by focusing on the localisation of urban spaces they go to. A typology of these poor populations reveals strongly differentiated behaviours, distinguishing old and young, men and women, central zone dwellers and peripheral area dwellers. To accomplish their different daily activities some must travel all through the city while others are confined within the area close to their home. Thus, the improvement of transport services does not have the same impact on the various groups of poor urban dwellers.Les populations urbaines d’Afrique subsaharienne se caractérisent par leur forte croissance numérique et, pour la grande majorité d’entre elles, par des revenus faibles et irréguliers. Le développement spatial qui en résulte est très peu maîtrisé et se manifeste aussi bien par une densification élevée de certaines zones que par une extension rapide de l’espace urbain. A partir de données recueillies lors de deux enquêtes quantitatives auprès de ménages résidant à Bamako et à Ouagadougou, l’objectif de cet article est d’analyser la mobilité des populations urbaines défavorisés en mettant l’accent sur leur fréquentation des espaces urbains. Une typologie des populations pauvres fait apparaître des comportements fortement différenciés, distinguant vieux et jeunes, hommes et femmes, habitants des quartiers centraux et habitants de la périphérie : certains doivent assurer une “mobilité de ville ”, d’autres sont cantonnés à une mobilité de quartier. L’amélioration des systèmes de transport n’a donc pas le même impact sur les différents groupes de citadins pauvres.Diaz Olvera Lourdes, Plat Didier, Pochet Pascal. Mobilité de quartier, mobilité de ville ? Les déplacements quotidiens des pauvres à Ouagadougou et Bamako. In: NETCOM : Réseaux, communication et territoires / Networks and Communication Studies, vol. 13 n°1-2,1999. Exploring and navigating electronic space - II / L’espace des réseaux électroniques: exploration et navigation - II pp. 143-163
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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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