1,721,057 research outputs found
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
Testing of Permian-Lower Triassic stratigraphic data in half-graben/tilt-block system: evidence for the initial rifting phase in Antalya Nappes
Full text linkTesting of Middle Permian-Lower Triassic stratigraphic data from the Antalya Nappes in a half- graben/tilt-block system has revealed the presence of episodic rifting events separated by periods of tectonic quiescence. Following a period of uplift during the Permian (late Artinskian to Roadian), the basement rocks have been activated by displacement faults and several depocenters in half-graben like asymmetrical basins began to be filled with Roadian to Wordian continental clastic deposits intercalated with coal and marine rocks. The early Capitanian time was a period of tectonic quiescence. The second event occurred in middle to late Capitanian times and produced basaltic volcanic rocks intercalated in the shallow marine fossiliferous carbonate successions. Following the Lopingian (Wuchiapingian and Changhsingian) and Permian-Triassic boundary interval representing a long tectonic quiescence, the last rifting episode started with an abrupt facies change in the late Griesbachian. Variegated shales, limestones, volcanics, talus breccia and debris flow deposits were laid down in a half-graben/tilt-block system. As normal faulting has become active the deposition continued on the subsiding hanging wall side. The stratigraphic gap increased in magnitude as the erosional truncation has incised deeply the footwall side. This initial rifting phase in the Antalya Nappes is prior to the onset of a stronger and more continuous rifting event which occurred in the Anisian-Carnian interval including a variety of deep water clastic and carbonate deposits, radiolarites containing sometimes blocks and clasts derived from the basin margins and volcanic rocks carrying intra-oceanic setting character.The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Recherches stratigraphiques et micropaléontologiques dans le Taurus Oriental au NW de Pinarbasi (Turquie)
No full textLe présent travail concerne une région cartographiée dans le Taurus Oriental au NW de la petite ville de Pinarbasi (Kayseri-Turquie), plus précisément entre Pazarëren et Tersakan, sur une superficie de 300 km2. Les affleurements étudiés sont groupés en 3 ensembles fondamentaux (Para-autochtone, Unités allochtones et Couverture) dans le cadre géologique et tectonique du Taurus. Le Para-autochtone sert de substratum tectonique aux unités allocthones (Unité Ophiolithique et Unité de Kocagedik) et constitue une partie de "l'Axe Calcaire du Taurus" qui n'est qu'un alignement de fenêtres appartenant au domaine de la plate-forme arabe-africaine. La Couverture essentiellement représentée par des roches sédimentaires soude ces deux ensembles après la mise en place des unités allochtones vers la fin du Maestrichtien. Ces trois ensembles sont perturbés à nouveau pendant la phase tectonique d'âge éo-oligocène.
L'étude stratigraphique sur ces ensembles se concentre surtout sur le Para-autochtone représenté par l'unité d'Aygörmez Dagi. Cette unité composée de 11 formations et dominée par les carbonates, est datée du Dévonien supérieur à Maestrichtien, avec un seul épisode régressif majeur dans les premiers niveaux du Mésozoïque, après le Trias inférieur et jusqu'au Lias inférieur proparte. Des corrélations avec les diverses régions du Taurus mettent en évidence la grande continuité de ces formations en dehors de la région étudiée.
L'étude micropaléontologique concerne surtout les foraminifères benthoniques provenant de l'Unité d'Aygërmez Dagi, ainsi que de l'Unité de Kocagedik (unité allochtone). Pour cette première unité, l'étude met en évidence une importante microfaune essentiellement dominée par les superfamilles des Endothyracea et des Fusulinacea pour le Paléozoïque supérieur, une association assez pauvre représentée par les familles des Fischerinidae et des Ammodiscidae pour le Trias inférieur, des familles surtout dominées par les Dicyclinidae, les Lituolidae, les Pfenderinidae, les Ataxophragmiidae, , les Pavonitinidae, les Orbitolinidae pour le Jurassique et Crétacé inférieur et finalement une importante faune de foraminifère planctonique (Globotruncanidae, etc.) pour le Crétacé supérieur. L'étude de l'Unité de Kocagedik complète en partie l'analyse micropaléontologique des foraminifères du Trias, avec l'apparition de faunes d'âge triasique supérieur qui n'ont pas été observées dans l'Unité d'Aygormez Dagi en raison de la présence d'une lacune sédimentaire à ces niveaux. Une grande partie des espèces déterminées sont décrites dans ce travail, pour certaines familles (Archaediscidae, Biseriamminidae, etc.) une révision taxonomique a également été proposée.
L'étude biostratigraphique traite des espèces caractérisant des intervalles biostratigraphiques dans l'unité d'Aygërmez Dagi. Ces intervalles sont ensuite mis en corrélation avec les unités biostratigraphiques établies dans divers bassins de la Tethys. Cette étude montre que, pour le Paléozoïque supérieur, les diverses localités ou province de la Russie (plate-forme Russe, bassin de Donetz, Transcaucasie) de l'Afrique du Nord (Libye, Algérie, etc.), d'Oman, d'Iran, d'Europe occidentale et d'Extrême Orient témoignent au moins en partie d'une évolution biostratigraphique semblable.
(...)</p
- …
