1,721,023 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
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
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
Arqueometría de pinturas rupestres la Piedra de la Cuadrícula (Suacha, Cundinamarca, Colombia): Contribución al estudio de la tecnología del arte prehistórico
No full textDissertação de Mestrado em Quaternário e Pré-históriaEl objetivo de esta tesis es mejorar significativamente los estudios sobre las condiciones en las que se encuentran los elementos pictóricos en un mural con arte rupestre, es decir, conocer los materiales usados y sus interacciones con la intemperie. Este ejercicio académico introduce nuevos aspectos en el proceso de investigación en torno a los materiales presentes en estas obras rupestres e inicia los trabajos sobre tecnología de pigmentos en la zona de estudio, ampliando las posibilidades descriptivas de las condiciones de conservación del arte rupestre. Los estudios de los materiales abren una ruta hacia los trabajos de conservación, y constituyen un camino esencial para los estudios proyectados de dataciones. En este trabajo se analizaron los pigmentos, ciertas concreciones, el sustrato roco¬so y la posible materia prima de las pinturas rupestres. El análisis realizado fue con la ayuda de la Espectrometría Infrarroja.
Este proceso de investigación está dentro del contexto que el equipo Gipri ha desarrollado en la ampliación del modelo metodológico de registro y docu¬mentación del arte rupestre en Colombia, en especial en el altiplano cundiboyacense. Se escogió la roca “Piedra de La Cuadrícula”, ubicada dentro de un conjunto total de 167 rocas en la zona de Tequendama, Municipio de Soacha, Departamento de Cundinamarca. Este sector es uno de los sitios arqueológicos más importantes del país. Allí se han encontrado secuencias estratigráficas cultu¬rales entre 12 500 B.P. y 2 500 B.P. Por otra parte, se han desarrollado estudios muy importantes del Medio Ambiente Pleistocénico y Holocénico.The aim of this thesis is to improve significantly the studies of the conditions of pictorial elements in a rock art mural, that is, to know the materials that were used and their interactions with the open air. This academic exercise introduces new aspects in the research process concerning the materials present in these rock art works and leads up to the works about technology of pigments in the studied area, extending the descriptive possibilities of the conservation conditions of rock art. The study of the materials opens a route towards the conservation work, and constitutes an essential way for the projected studies on dating. In this work, pigments were analyzed, some accretions, the rock substrate and the possible raw material of the rock art paintings. This analysis was done using Spectrometry Infrared.
This investigation process is set in the context that the research group GIPRI has developed, as an extension of the methodological model of record and documentation of rock art in Colombia, especially in the cundiboyacense high-plateau. The rock chosen was “La Piedra de la Cuadrícula“, located in a set of 167 rocks in Tequendama’s area, Soacha’s Municipality, in Cundinamarca’s department. This sector is one of the most important archaeological sites of the country. In this site cultural stratigraphic sequences between 12 500 B.P. and 2500 B.P. have been found. On the other hand, there have been developed very important studies of the Pleistocenic and Holocenic environment
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
The first Human settlements out Africa into Europe: a chronological perspective
No full textInternational audienceA reliable chronology for the oldest settlements of Europe from the Early to the beginning of the Middle Pleistocene is an important requirement for understanding human evolution and especially the routes used to reach Western Europe from Africa. The paucity of sites, plus the limited number of available samples for dating, and the many contexts which do not favor the use of particular dating methods, further complicate the picture. This contribution addresses several questions: Which dating methods are relevant for establishing the chronology of the main sites? Are the first settlements older than the Jaramillo event? Which routes were used to enter Europe? Were the earliest human occupations intermittent or continuous
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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