1,720,954 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
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
Habitat use Pipistrellus nathusii in the Seewinkel region, Austria
No full textFledermäuse sind eine diverse, hochmobile und weitverbreitete Artengruppe, die sich durch Veränderungen in Verhalten, Ausbreitung und Migration an aktuelle Herausforderungen wie Klimawandel und Landnutzungsänderungen anpassen kann. Die ziehende Art Pipistrellusnathusii scheint sich derzeit in den Norden und Westen auszubreiten. Um Veränderungen der Ausbreitung zukünftig besser prognostizieren, wurde eine Habitatanlyse im Seewinkel, Österreich, durchgeführt. Wir statteten Individuen mit VHF-Transmittern aus und sammelten Daten mit Hilfe eines automatisierten Telemetriesystems. Danach berechneten wir Standortdaten durch Azimuthal Telemetry Models. Bewegung wurde durch kontinuierliche stochastische Prozesse modelliert, um räumliche und zeitliche Autokorrelation einzubeziehen. Wir untersuchten ob, die Lebensräume Wald, Siedlung, Salzlacken, Grasland, Weingarten, Neusiedlersee, Schilf oder Höfe mit Tierhaltung Einfluss auf die Habitatnutzung haben. Dafür wurde integrierte Resource Selection Analysis angewendet. Die Ergebnisse zeigen die Anpassungsfähigkeit und Individualität der Art. Bevorzugte Lebensräume werden relativ mehr genutzt als sie in der Umgebung vorhanden sind. Gemiedene Lebensräume werden wenigerhäufig genutzt also vorhanden. Kein Lebensraum wurde von allen Individuen bevorzugt oder gemieden. Die Lebensräume Wald, Siedlung und Höfe mit Tierhaltung wurden von mehr Individuen bevorzugt als gemieden. Schilfflächen wurden von gleich vielen Individuen bevorzugt und gemieden. Zwei Individuen mieden den Neusiedlersee, während keine Individuen den See bevorzugten, wobei dieses Ergebnis möglicherweise durch Einschränkungen in Reichweite und Genauigkeit des Systems und die Trockenheit während des Untersuchungszeitraumes beeinflusst wurde. All das deutet auf die Variabilität und Anpassungsfähigkeit der untersuchten Art hin und zeigt, dass sie auf Umweltdruck und neue sich verändernde Umweltfaktoren durch Ausbreitung reagiert.Bats are a very diverse, highly mobile, and widespread group of animals that – faced with current challenges, which include climate change and changes in land use – can adapt by altering their behavior, range, or migration patterns. The migrating species Pipistrellus nathusii might have expanded its range to the north and west due to environmental factors. To facilitate predictions of future expansions, we analysed the habitat use of sixteen individuals in the Seewinkel region in Austria. We attached VHF-transmitters to the individuals and collected location data using automated receiver stations. We used an Azimuthal Telemetry Model to estimate the locations of the radio-tracked animals. We then modelled movement by applying continuous-time stochastic process models to account for the spatial and temporal autocorrelation. We then analysed whether forests, settlements, temporary salt lakes, grassland, vineyards, Lake Neusiedl, reed, or farms with livestock influenced habitat use by applying integrated resource selection analysis. The results show great individuality and adaptability of the animals. Selected habitatsare used relatively more often than available in the environment, avoided habitats are used less often than they are available. The tracked individuals selected or avoided habitats differently. Pipistrellus nathusii used all analysed habitats available in the study area in someway. The habitats forest, settlement and farms with livestock were selected by more individuals than avoided. The same number of individuals selected and avoided reed areas. Two individuals avoided Lake Neusiedl, while none selected it, although these results mighthave been influenced by constraints of the telemetry system concerning range and the draught during the study period. All this is evidence of the variability and adaptability of the study species which allows it to expand its range according to pressures and opportunities.submitted by Samira LinhartMasterarbeit Universität für Bodenkultur Wien 2024Mit deutscher Zusammenfassun
Habitat use Pipistrellus nathusii in the Seewinkel region, Austria
No full textFledermäuse sind eine diverse, hochmobile und weitverbreitete Artengruppe, die sich durch Veränderungen in Verhalten, Ausbreitung und Migration an aktuelle Herausforderungen wie Klimawandel und Landnutzungsänderungen anpassen kann. Die ziehende Art Pipistrellusnathusii scheint sich derzeit in den Norden und Westen auszubreiten. Um Veränderungen der Ausbreitung zukünftig besser prognostizieren, wurde eine Habitatanlyse im Seewinkel, Österreich, durchgeführt. Wir statteten Individuen mit VHF-Transmittern aus und sammelten Daten mit Hilfe eines automatisierten Telemetriesystems. Danach berechneten wir Standortdaten durch Azimuthal Telemetry Models. Bewegung wurde durch kontinuierliche stochastische Prozesse modelliert, um räumliche und zeitliche Autokorrelation einzubeziehen. Wir untersuchten ob, die Lebensräume Wald, Siedlung, Salzlacken, Grasland, Weingarten, Neusiedlersee, Schilf oder Höfe mit Tierhaltung Einfluss auf die Habitatnutzung haben. Dafür wurde integrierte Resource Selection Analysis angewendet. Die Ergebnisse zeigen die Anpassungsfähigkeit und Individualität der Art. Bevorzugte Lebensräume werden relativ mehr genutzt als sie in der Umgebung vorhanden sind. Gemiedene Lebensräume werden wenigerhäufig genutzt also vorhanden. Kein Lebensraum wurde von allen Individuen bevorzugt oder gemieden. Die Lebensräume Wald, Siedlung und Höfe mit Tierhaltung wurden von mehr Individuen bevorzugt als gemieden. Schilfflächen wurden von gleich vielen Individuen bevorzugt und gemieden. Zwei Individuen mieden den Neusiedlersee, während keine Individuen den See bevorzugten, wobei dieses Ergebnis möglicherweise durch Einschränkungen in Reichweite und Genauigkeit des Systems und die Trockenheit während des Untersuchungszeitraumes beeinflusst wurde. All das deutet auf die Variabilität und Anpassungsfähigkeit der untersuchten Art hin und zeigt, dass sie auf Umweltdruck und neue sich verändernde Umweltfaktoren durch Ausbreitung reagiert.Bats are a very diverse, highly mobile, and widespread group of animals that – faced with current challenges, which include climate change and changes in land use – can adapt by altering their behavior, range, or migration patterns. The migrating species Pipistrellus nathusii might have expanded its range to the north and west due to environmental factors. To facilitate predictions of future expansions, we analysed the habitat use of sixteen individuals in the Seewinkel region in Austria. We attached VHF-transmitters to the individuals and collected location data using automated receiver stations. We used an Azimuthal Telemetry Model to estimate the locations of the radio-tracked animals. We then modelled movement by applying continuous-time stochastic process models to account for the spatial and temporal autocorrelation. We then analysed whether forests, settlements, temporary salt lakes, grassland, vineyards, Lake Neusiedl, reed, or farms with livestock influenced habitat use by applying integrated resource selection analysis. The results show great individuality and adaptability of the animals. Selected habitatsare used relatively more often than available in the environment, avoided habitats are used less often than they are available. The tracked individuals selected or avoided habitats differently. Pipistrellus nathusii used all analysed habitats available in the study area in someway. The habitats forest, settlement and farms with livestock were selected by more individuals than avoided. The same number of individuals selected and avoided reed areas. Two individuals avoided Lake Neusiedl, while none selected it, although these results mighthave been influenced by constraints of the telemetry system concerning range and the draught during the study period. All this is evidence of the variability and adaptability of the study species which allows it to expand its range according to pressures and opportunities.submitted by Samira LinhartMasterarbeit Universität für Bodenkultur Wien 2024Mit deutscher Zusammenfassun
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