1,721,127 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
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
Impacto de los procesos de autoevaluación y acreditación de la carrera de Veterinaria de la Facultad de Ciencias Veterinarias de la UBA: el diseño de un proyecto estratégico de mejora
Full text linkLos procesos de autoevaluación en el marco de la acreditación de carreras universitarias incluyen un conjunto de experiencias institucionales vinculadas con la gestión institucional que conducen hacia la mejora de la calidad académica. Se analiza en profundidad el caso de la Facultad de Ciencias Veterinarias de la UBA, en la cual la autoevaluación y acreditación de la carrera, han permitido hacer visibles algunos aspectos de la cotidianeidad y sistematizar información disponible indispensable para la gestión. Asimismo ha tenido lugar un trabajo colectivo de explicitación y combinación de conceptos e ideas presentes en la institución, la valoración de las principales fortalezas, la identificación de las oportunidades y amenazas así como la reconsideración de las debilidades detectadas. Es posible aseverar que el proceso de autoevaluación ha permitido tomar decisiones en función de la mejora continua; de este modo el impacto puede ser percibido en las estrategias y lineamientos prioritarios que se desarrollan actualmente en la facultad. El cambio planificado favorece la toma de conciencia de círculos cada vez más amplios de actores institucionales, generando sinergia en la acción y coherencia interna. En el trabajo se despliegan los resultados obtenidos y las principales estratégicas de acción que, a partir de la autoevaluación, han sido delineadas como parte de un proyecto institucional a mediano y largo plazo
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
Stochastic analysis of motorcycle dynamics
No full textOff-road and racing motorcycles require a particular setup of the suspensions to improve the
comfort and the safety of the rider, maintaining a continuous contact between the road and the
motorcycle (by means of the tires). Further, because of the ground roughness, in the case of offroad
motorcycle, suspensions usually experience extreme and erratic excursions (suspension
stroke) in performing their function. In this regard, the adoption of nonlinear devices can,
perhaps, limit both the acceleration experienced by the sprung mass and the excursions of the
suspensions. This leads to the consideration of asymmetric nonlinearly-behaving suspensions.
This option, however, induces the difficulty of the need to solve nonlinear differential equations
governing the motion of the motorcycle as excited by the stochastic road ground profile. In this
paper a “quarter” dynamic model of a motorcycle is considered. The model involves suspension
elements with asymmetric behavior. Further, it is assumed that the motorcycle is exposed to
loading of a stochastic nature as it moves with a specified speed over a road profile defined by a
relevant power spectrum. It is shown that a meaningful analysis of the motorcycle response can
be conducted by using the technique of statistical linearization. The validity of the proposed
approach is established by comparison with results from pertinent Monte Carlo studies. It is
hoped that the proposed approach can be used for a variety of parameter/ride quality studies and
as preliminary design tool by the motorcycle industry
Analysis of uniparental markers reveals a complex pattern of migration within Sardinia
No full textBackground: From the genetic viewpoint, Sardinia is well differentiated from other surrounding populations. In spite of a common ancestral origin, substantial genetic heterogeneity is observed within the island. Matrimonial pattern, as well as past migration movements, may account for the complex genetic structure of Sardinia. Aim: To compare data from uniparental markers in order to highlight the migration pattern of male and female lineages and check their congruence with the demographic data. Subjects and methods: Genomic DNA was obtained from 279 unrelated males selected from three isolated villages and from three open populations representative of North, Central and South Sardinia. The hypervariable region 1 of mtDNA was sequenced and 17 Y-chromosome loci were genotyped. Parameters of within and among populations diversity were calculated and analysis of migration was performed. Results: When analysed as a whole population, demographic data show a balanced movement of males and females in Sardinia, unlike other Italian and European populations. Remarkably, when the island is divided into geographic areas, different migration patterns are clearly recognisable. Whereas North and Central Sardinia populations show a stronger male migration rate, the South Sardinia population shows a stronger female migration rate. Conclusion: Distinct migration patterns of male and female lineages affect the areas investigated differently. These past migration movements are major contributors to the complex genetic structure currently observed in the Sardinian population
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