1,721,019 research outputs found
Data regarding the experimental manufacture of Roman objects made of domestic herbivores horns
No full textProcessing hard animal materials in Roman times was an important occupation. In any Roman settlements there were certainly workshops where objects were being made out of the bones and horns of domestic animals. One such workshop was found on Insula 3 of the ancient Roman town named Colonia Dacica Augusta Ulpia Traiana Sarmizegetusa, and a similar case was registered in Histria. The workshop provided residual bone ends, cut segments, finished items, in the process of being made or discarded. Upon closer analysis, I found that the horny part of the cattle, sheep and goat horns are lost in time as they are 100% organic nature, this being the reason why in the Roman sites there are no artefacts made out of these horn parts. Experimental archaeology has helped to restore some parts of the bovine and goat horns, to see differences or similarities with antlers, in terms of processing. Thus, I made a comb, different chips for games, a hair pin, a pendant and a dagger button of bovine horn, as well as a dice and a needle of goat horn. After processing the horns of domestic animals, I could see that they can be altered by heat (so they can be shaped), that they are as suitable for making items as the horns of wild animals, that they have a pleasant translucent appearance and that they were certainly used by the Romans in making different types of objects.Barbu Marius-Gheorghe. Data regarding the experimental manufacture of Roman objects made of domestic herbivores horns. In: Annales d'Université "Valahia" Târgovişte. Section d'Archéologie et d'Histoire, Tome 14, Numéro 1, 2012. pp. 105-116
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
Study of some hydrostatic approximations of fluid mechanics models
No full textDans la première partie de cette thèse, nous étudions trois modèles décrivant une approximation hydrostatique des équations issues de la mécanique des fluides telles que les équations de la magnétohydrodynamique, les équations primitives et les équations hyperboliques de Navier-Stokes. Dans le cadre de ce projet, nous avons déterminé l'impact que la méthode des estimations analytiques pourrait avoir sur le problème de la limite hydrostatique des équations de la mécanique des fluides avec une faible viscosité dans un domaine mince. Les équations de la magnéto-hydrodynamique et hyperbolique de Navier-Stokes avec une viscosité évanescente et conditions Dirichlet au bord du domaine, font intervenir des équations de type Prandtl qui régissent le comportement du fluide dans une couche limite proche du bord. Ces équations semblent être mal posées dans des espaces de Sobolev, mais elles sont bien posées pour des données initiales analytiques. Nous avons démontré par la méthode des estimations analytique qu'il est possible d'obtenir un résultat d'existence globale en temps dans l'espace des fonctions analytiques, à donnée initiale petite. Dans la deuxième partie de cette thèse, nous étudions le système magnétohydrodynamique dans tout l'espace de dimension trois R3. Dans ce cadre, on a obtenu deux résultats d'existence de solutions fortes globales pour ce système magnéto-hydrodynamique homogène et inhomogène. En effet, on a étudié ces équations dans un cadre homogène et inhomogène où on a pu montrer que nos équations sont globalement bien posées lorsque la dérivée verticale de nos données initiales satisfait une condition de petitesse.In the first part of this thesis, we study three models describing a hydrostatic approximation of equations derived from equations of fluid mechanics such as the equations of magnetohydrodynamic, the primitive equations and the hyperbolic equations of Navier-Stokes. In this project, we determined the impact that the method of analytical estimates could have on the problem of the hydrostatic limit of the equations of fluid mechanics with low viscosity in a thin domain. The equations of the magnetohydrodynamic and hyperbolic Navier-Stokes with evanescent viscosity and Dirichlet conditions at the edge, involve the Prandtl equations that govern the behavior of the fluid in a boundary layer close to the edge. These equations seem to be poorly posed in Sobolev spaces, but they are well posed for initial analytical data. We have demonstrated by the method of analytical estimates that it is possible to obtain a global existence result in time in the space of analytical functions, with a small initial data. In the second part of this thesis, we study the magneto-hydrodynamic system in all the space of dimension three R3. In this context, we obtained two results of existence of strong global solutions for this homogeneous and inhomogeneous magneto-hydrodynamic system. Indeed, we studied these equations in a homogeneous and an inhomogeneous framework where we were able to show that our equations are generally well-posed when the vertical derivation of our initial data satisfies a smallness condition
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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