1,721,366 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
La geología del litoral asturiano y su importancia industrial: estudios originales del permiano y del hullero superior de España
No full text[EN] This study starts from a previous work of recognition
made out a few years ago on the cretaceous valley of Asturias.
In the place named Bergueres a pit about 70 meters deep
was drilled, and so two crosscuts that splitted, under the infracretaceous mantle-sensibly horizontal there-, a stratigraphic ensemble nearly upright, composed by shales and
sandstones with an association of permian and carboniferous
-flora which had not been found as yet in Spain.
On the year 1940, after having interrupted the works into
the pit of Bergueres, a prospecting Society was constituted
,according to the author's mind, that, availing that pit and
:recognizing again its stratigraphy by means of the cross-cuts
and some borings made in the outskirts, discovered in several
places the presenGe of a productive coal measure, underneath
the permian and aptien beds.
It is described in the paper the way how these investigations
were made, analyzing the oldest prospections on the
:region and studying the most interesting outcrops of the paleozoic
areas which remained without 'any classification.
From these studies, stretched out for twelve years, unquestionable
proofs were obtained about the existence of a carboniferous
field on the whole central valley of Asturias, and
'also, its direct connection with the coal measure of La Camocha
(Gijon), what has enabled to draw some very impor'
tant stratigraphic cuts, so regarding to the central valley
,as to some other further regions.
On the other hand, it is perfectly delimited the tectonic
and thus the true geological age of the overlying strata
from this side of the Asturian shore, considered like tri.
assic up to now, which from the same coast penetrate as far
'as to superpose the northern edge of the muscovien basin of
Asturias, such as those which partly overlap the carboniferous
of Langreo in Sama and La Felguera, and in the zone,
slightly more eastern, of Aramil, Lieres and another spots.
The investigations on the central valley have shown not
only the existence of the productive carboniferous under the
mantle of clays, sands and conglomerates from the aptien,
but also that one of the characteristic layers from the permian,
lower and mean (rothliegende), which superpose each
other accordingly. On the other side, on the whole Asturian
shore, up to strike against the edge of the central muscovien
basin, the red mantles composed by clays, sandstones, and
siliceous conglomerates, which overlie the productive upper
carboniferous (uralien), belong to the upper permian (zechs~
tein), as it has been shown by the flora and fauna gathered
and classified by the author. Their deposit happened after
the fold of the uralien and rothliegende layers altogether.
It is equally settled, with no doubt, that all the red field
on the Asturian coast, except the small valley of Sariego
(clearly triassic), corresponds to the permian with their
complete levels although having the mentioned discordances.
It is made clear also the exact place, on the central valley
of Asturias, occupied by the rhaetic in the supratriassic layers,
against the French geologists' opinion considering it
to be in the infra-lias layers.
An interesting geological cut is shown in the paper, that
will be very useful for future investigations, so respecting to
the central valley as to the other fields on the Asturian share.
Finnally,' a confused previous cut is unriddled, being
drawn the true arrangement and age of the elements composing
the stratigraphic complex existing from the dinantien
mass of Sueve, that partly shelters here the carboniferous of
Carrandi, up to the sea. It may be read in the new cut the
very interesting process, sedimentary and tectonic, of the
most productive paleozoic fields on the Asturian shore.Peer reviewe
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
[Conferencia sobre Gases combustibles naturales (1916) : Tittusville (Pensilvania)]
No full textColección Placas de Linterna (“Linterna Mágica") realizadas por Ignacio Patac y Pérez-Herce. Placa diapositiva usada en la docencia de la asignatura de Geología en la Escuela de Facultativos de Minas de Mieres por su autor entre 1923-1943. En la imagen se muestran varios cortes realizados por Guillermo Schulz recopilados por los ingenieros del cuerpo de minas M, Durñan y J, Fernández en el ATLAS GEOLOGICO Y TOPOGRAFICO DE LA PROVINCIA DE OVIEDO en 1914
- …
