1,720,962 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Inventaire des orchidées de la Kabylie des Babors (Algérie) – éléments de cartographie et enjeux patrimoniaux
Get PDFL’orchidoflore de la Kabylie des Babors (Nord-Est Algérien) demeurait mal connue malgré l’importance de ce secteur clé pour la biodiversité et l’intérêt récent des botanistes algériens pour la famille des orchidées. Elle a été inventoriée durant la période s’étalant du printemps 2011 au printemps 2014.Vingt-sept taxons (espèces ou sous-espèces) ont été répertoriées (plus deux autres dans la littérature) réparti en neuf genres (dix avec la littérature). Le genre Ophrys est le plus diversifié, avec huit espèces, le genre Orchis vient en deuxième place, avec cinq espèces. Quatre de ces espèces sont mentionnées pour la première fois dans le secteur phytogéographique dit de "Petite
Kabylie". La région d’étude héberge douze (46,15%) espèces considérées
patrimoniales ; parmi elles cinq espèces sont reconnues comme rares, quatre espèces assez rares et une espèce très rare et parallèlement six sont protégées par la loi algérienne, tandis que trois sont endémiques algéro-tunisiennes. Cette relative diversité orchidologique s’explique en grande partie par les conditions climatiques exceptionnelles, associées à une relative originalité paysagère des milieux en altitudes de la Kabylie des Babors, plus au moins bien conservée
Variations on the Author
Get PDF“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
Get PDFWe 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
Inventaire des orchidées de la Kabylie des Babors (Algérie) – éléments de cartographie et enjeux patrimoniaux
Get PDFBougaham, A.F., Bouchibane, M. & E. Véla (2015): Orchid inventory of Babors-Kabylie (Algeria) - mapping elements and conservational issues.- J. Eur. Orch. 47 (1): 88-110. The orchids of Babors Kabylia (north eastern Algeria) remain understudied despite the importance of this key area for biodiversity and the recent interest of Algerian botanists into orchids family. They were inventoried during the spring period extending from 2011 to 2014. Twenty-seven taxa (species or subspecies) were recorded (plus two others in the literature) divided into nine genera (ten with literature). The genus Ophrys is the most diverse with eight species ; genus Orchis comes in second place with five species. Four of these species are mentioned for the first time in this phytogeographical area known as "Petite Kabylie". The study area harbour twelve (46%) species which are of high patrimonial value. Among them, five are rare, four fairly rare and one extremely rare species and in parallel six species are protected by the Algerian law, while three are Algero-Tunisian endemism. This relatively high orchid diversity is due in large part to the exceptional weather conditions, combined with a relative landscape originality in the mountainous areas of Kabylia of the Babors, fairly well preserved
Inventaire des orchidées de la Kabylie des Babors (Algérie) : cartographie et enjeux patrimoniaux
No full textInternational audienceThe orchids of Babors Kabylia (north eastern Algeria) remain understudied despite the importance of this key area for biodiversity and the recent interest of Algerian botanists into orchids family. They were inventoried during the spring period extending from 2011 to 2014. Twenty-seven taxa (species or subspecies) were recorded (plus two others in the literature) divided into nine genera (ten with literature). The genus Ophrys is the most diverse with eight species ; genus Orchis comes in second place with five species. Four of these species are mentioned for the first time in this phytogeographical area known as "Petite Kabylie". The study area harbour twelve (46%) species which are of high patrimonial value. Among them, five are rare, four fairly rare and one extremely rare species and in parallel six species are protected by the Algerian law, while three are Algero-Tunisian endemism. This relatively high orchid diversity is due in large part to the exceptional weather conditions, combined with a relative landscape originality in the mountainous areas of Kabylia of the Babors, fairly well preserve
Inventaire des orchidées de la Kabylie des Babors (Algérie) : cartographie et enjeux patrimoniaux
No full textInternational audienceThe orchids of Babors Kabylia (north eastern Algeria) remain understudied despite the importance of this key area for biodiversity and the recent interest of Algerian botanists into orchids family. They were inventoried during the spring period extending from 2011 to 2014. Twenty-seven taxa (species or subspecies) were recorded (plus two others in the literature) divided into nine genera (ten with literature). The genus Ophrys is the most diverse with eight species ; genus Orchis comes in second place with five species. Four of these species are mentioned for the first time in this phytogeographical area known as "Petite Kabylie". The study area harbour twelve (46%) species which are of high patrimonial value. Among them, five are rare, four fairly rare and one extremely rare species and in parallel six species are protected by the Algerian law, while three are Algero-Tunisian endemism. This relatively high orchid diversity is due in large part to the exceptional weather conditions, combined with a relative landscape originality in the mountainous areas of Kabylia of the Babors, fairly well preserve
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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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