1,721,023 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
Geomorphological mapping and relief evolution of the Dokali River catchment near Demonià (South-western Lakonia, Greece) / Cartographie géomorphologique et évolution du relief du bassin versant de la rivière Dokali près de Démonia (Laconie du sud-ouest, Grèce)
No full textAbstract Open to the sea in the Demonià area, the Dokali basin, inside the Lakonia graben, constitutes a relief unit representative of the landscape of the entire western coast, from Molaoi to Neapolis. A survey was carried out for the purpose of reconstructing the geomorphological evolution of this typical Mediterranean coastal region. The attached map summarises the work accomplished and this paper deals mainly with the explanatory notes. Structural landforms are here strictly tied to a particular situation deriving from the overriding of carbonate rocks, belonging to the Gavrovo-Tripolitza nappe, on the metamorphic complex of the Lower Western Hellenic nappe (phyllites, quartzites and evapo- rites). In the inner Dokali basin a thick series of Plio-Quaternary marine sediments filled a composite structural and morphological depression. In this context exogenous processes (slope, fluvial, karstic and coastal) have generated a highly dissected topography, controlled by the sharp contrast between the two above mentioned lithological complexes, and involving differential weathering. Some different types of cal- crete have also been found on the slopes, providing further information about the long-term evolution of the landscape. The successive stages of landscape development are summarised as follows: 1) palaeo-relief (altitude between 400 and 500 m above palaeosea level) consisting of plateaux, flat divides, ridges and valleys; 2) first incidence of significant uplift and deep incision of the Dokali River fluvial system up to 100 m a.s.l.; 3) long period of stability, allowing 1 km of slope recession and pediment formation; 4) second incidence of limited uplift, followed by a renewed valley incision to below the present sea level; 5) Neogene marine ingression and consequent filling of the valley up to 100 m a.s.l.; 6) Quaternary eustatic sea level changes, with new cycle of valley incision and formation of marine terraces.Résumé Ouvert vers la mer, dans la région de Démonia, le bassin versant de la Dokali, dans la dépression tectonique du Golfe de Laconie, constitue une unité représentative du paysage de la côte occidentale tout entière, de Molaôi à Néapolis. Afin de reconstituer l'évolution du relief dans cette région côtière typiquement méditerranéenne un levé géomorphologique détaillé a été effectué. Cet article est destiné à illustrer la carte hors-texte qui a servi de base à l'interprétation du relief et de son évolution. Les formes structurales sont strictement liées à une situation tout à fait particulière, qui dérive de la superposition des roches carbonatées de la Nappe Gavrovo-Tripolitza sur le complexe métamorphique (phyllites, quartzites et évaporites) de la partie inférieure de la Nappe Occidentale Hellénique. À l'intérieur du bassin versant de la Dokali une épaisse série de sédiments plio-quaternaires ("Néogène") a rempli une dépression d'origine complexe. Dans ce contexte, les processus exogènes (fluviaux, karstiques, coders et de versants) ont produit un relief très disséqué, dominé par un net contraste entre les deux complexes lithologiques, mis en valeur par l'érosion différentielle. Plusieurs types de croûtes calcaires ont été en outre observés sur les versants. Les étapes principales de l'évolution du relief se résument ainsi : 1) existence d'un paléo-relief (entre 400 et 500 m au-dessus du niveau de la mer) avec dôme-plateaux, sommets plats, dorsales et vallées ; 2) premier soulèvement important et incision profonde du réseau hydrographique de la Dokali jusqu'à 100 m au-dessus du niveau de la mer ; 3) longue période de stabilité, permettant un recul de 1 km des talus ainsi que la formation d'un pediment ; 4) second soulèvement, faible, suivi par une nouvelle incision des vallées jusqu'au niveau actuel de la mer ; 5) transgression marine du "Néogène" et remplissage des vallées jusqu'à +100 m ; 6) changements eustatiques quaternaires du niveau de la mer, avec un nouveau cycle d 'incision des vallées et la formation de terrasses marines.Federici Paolo Roberto Roberto, Rodolfi Giuliano, Stocker Erich. Geomorphological mapping and relief evolution of the Dokali River catchment near Demonià (South-western Lakonia, Greece) / Cartographie géomorphologique et évolution du relief du bassin versant de la rivière Dokali près de Démonia (Laconie du sud-ouest, Grèce). In: Géomorphologie : relief, processus, environnement, Juillet-septembre, vol. 8, n°3. pp. 223-238
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
Assessment of hydro-geomorphological hazard potentials in the Chilean semiarid coastal range and its impacts on La Serena city, Coquimbo Region
Full text linkTwo micro-catchments, tributaries of the Elqui River in the coastal range of the semiarid central-northern Chile were analyzed to establish the hazard potentials associated with extreme rainfall and their effects on the urban area of La Serena city. Geomorphological mapping was performed identifying the morphological features associated with inherited and present-day processes, through photointerpretation and field work. To assess the geohazard potentials related to extreme precipitation events, a detailed terrain analysis was performed deriving topographic indices that in turn characterize the related process potentials. Extreme rainfall events were calculated with a decadal recurrence ([ 60 mm/day) and are subsequently associated with El Nino (ENSO) and Pacific Decadal Oscillation (PDO warm phase) events. We applied a simple storm flow model using a 20-year return period reflecting a disastrous flood event that affected the La Serena urban area in June 2011. The results highlight the spatial distribution of the hazard potentials in the two Elqui tributaries and their effects on the La Serena urban area. We show that areas subject to intensive land use change and urban sprawl associated with the lower marine terrace and river mouth of the Elqui River are of very high flooding and tsunami risk.FONDECYT (National Fund for Science and Technology), 1120234, 1113062
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
