1,720,956 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
CO2-adsorption performance of biochar from waste products
No full textIn dieser Masterarbeit wird die CO2-Adsorptionsleistung von Biokohle aus erneuerbaren Rohstoffen im Vergleich zu industriell hergestellter Aktivkohle bewertet. Verglichen werden Biokohle-Pellets, die aus verschiedenen Biomasse-Abfallprodukten selbst hergestellt wurden, mit losen Materialformen und industriell hergestellten Aktivkohlen aus Steinkohle und Kokosnussschalen.In der Studie werden die chemischen und physikalischen Eigenschaften von Biokohle mit Hilfe von Techniken wie der thermogravimetrischen Analyse (TGA), der Rasterelektronenmikroskopie (SEM) und der Analyse des Metallgehalts methodisch charakterisiert. Diese Methoden stellen Korrelationen zwischen dem Formfaktor der Biokohle - Pellets oder loses Material - und ihrer CO2-Adsorptionsleistung her und untersuchen den Einfluss der Art des Ausgangsmaterials, der Verarbeitungsbedingungen und der Aktivierungsmethoden.Die Ergebnisse unterstreichen das Potenzial der Verwendung von Biokohle, insbesondere in pelletierter Form, als nachhaltige Alternative zu herkömmlichen Aktivkohlen in CO2 Adsorptionsanwendungen, die zur Kohlenstoffbindung beitragen und eine produktive Nutzung von Biomasseabfällen ermöglichen.Diese Forschung unterstreicht die Bedeutung der Optimierung von Produktionsund Aktivierungsverfahren zur Verbesserung der Adsorptionseigenschaften von Biokohle, um ihre Wirksamkeit als umweltfreundliche Lösung für das Umweltmanagement und die Abschwächung des Klimawandels zu verbessern. Die Studie schließt mit Empfehlungen für die weitere Erforschung von Biokohleanwendungen in industriellen Umgebungen, um ihr breiteres Potenzial in der Umwelttechnologie zu erkunden.This Master's thesis evaluates the CO2 adsorption performance of biochar derived from renewable feedstocks compared to industrially produced activated carbon. It compares biochar pellets, self-prepared from various biomass waste products, against loose material forms, alongside the industrially produced activated carbons made from hard coal and coconut shells.The study methodically characterizes the chemical and physical properties of biochar, utilizing techniques such as thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and metal content analysis. These methods establish correlations between the biochar's form factor —pellets versus loose material— and its CO2 adsorption performance, as well as examining the influence of feedstock type, processing conditions, and activation methods.The findings highlight the potential of using biochar, especially in pelletized form, as a sustainable alternative to conventional activated carbons in CO2 adsorption applications, contributing to carbon sequestration efforts and offering a productive use of biomass waste.This research underscores the importance of optimizing production and activation techniques to enhance the adsorptive properties of biochar, aiming to improve its effectiveness as a green solution for environmental management and climate change mitigation. The study concludes with recommendations for further research into biochar applications in industrial settings, exploring its broader potential in environmental technology.submitted by Benjamin DaurerDie 2 bei CO2 ist im Titel tiefgestelltMasterarbeit BOKU University 2024Mit deutscher Zusammenfassun
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
CO2-adsorption performance of biochar from waste products
No full textIn dieser Masterarbeit wird die CO2-Adsorptionsleistung von Biokohle aus erneuerbaren Rohstoffen im Vergleich zu industriell hergestellter Aktivkohle bewertet. Verglichen werden Biokohle-Pellets, die aus verschiedenen Biomasse-Abfallprodukten selbst hergestellt wurden, mit losen Materialformen und industriell hergestellten Aktivkohlen aus Steinkohle und Kokosnussschalen.In der Studie werden die chemischen und physikalischen Eigenschaften von Biokohle mit Hilfe von Techniken wie der thermogravimetrischen Analyse (TGA), der Rasterelektronenmikroskopie (SEM) und der Analyse des Metallgehalts methodisch charakterisiert. Diese Methoden stellen Korrelationen zwischen dem Formfaktor der Biokohle - Pellets oder loses Material - und ihrer CO2-Adsorptionsleistung her und untersuchen den Einfluss der Art des Ausgangsmaterials, der Verarbeitungsbedingungen und der Aktivierungsmethoden.Die Ergebnisse unterstreichen das Potenzial der Verwendung von Biokohle, insbesondere in pelletierter Form, als nachhaltige Alternative zu herkömmlichen Aktivkohlen in CO2 Adsorptionsanwendungen, die zur Kohlenstoffbindung beitragen und eine produktive Nutzung von Biomasseabfällen ermöglichen.Diese Forschung unterstreicht die Bedeutung der Optimierung von Produktionsund Aktivierungsverfahren zur Verbesserung der Adsorptionseigenschaften von Biokohle, um ihre Wirksamkeit als umweltfreundliche Lösung für das Umweltmanagement und die Abschwächung des Klimawandels zu verbessern. Die Studie schließt mit Empfehlungen für die weitere Erforschung von Biokohleanwendungen in industriellen Umgebungen, um ihr breiteres Potenzial in der Umwelttechnologie zu erkunden.This Master's thesis evaluates the CO2 adsorption performance of biochar derived from renewable feedstocks compared to industrially produced activated carbon. It compares biochar pellets, self-prepared from various biomass waste products, against loose material forms, alongside the industrially produced activated carbons made from hard coal and coconut shells.The study methodically characterizes the chemical and physical properties of biochar, utilizing techniques such as thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and metal content analysis. These methods establish correlations between the biochar's form factor —pellets versus loose material— and its CO2 adsorption performance, as well as examining the influence of feedstock type, processing conditions, and activation methods.The findings highlight the potential of using biochar, especially in pelletized form, as a sustainable alternative to conventional activated carbons in CO2 adsorption applications, contributing to carbon sequestration efforts and offering a productive use of biomass waste.This research underscores the importance of optimizing production and activation techniques to enhance the adsorptive properties of biochar, aiming to improve its effectiveness as a green solution for environmental management and climate change mitigation. The study concludes with recommendations for further research into biochar applications in industrial settings, exploring its broader potential in environmental technology.submitted by Benjamin DaurerDie 2 bei CO2 ist im Titel tiefgestelltMasterarbeit BOKU University 2024Mit deutscher Zusammenfassun
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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