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
Hashtabellen und Hashfunktionen im Big-Data Framework Thrill
No full textIn der heutigen Zeit steigt die Menge der weltweit generierten Daten kontinuierlich immer weiter an. Dies erzeugt jedoch Probleme, da konventionelle Technologien und Ansätze nicht mehr in der Lage sind diese Daten in akzeptabler Zeit zu verarbeiten. Entsprechend dessen wurden in der Vergangenheit verschiedene Lösungsansätze, Technologien und Frameworks wie etwa das MapReduce Programmiermodell entwickelt. Eines dieser Frameworks ist das Big-Data Framework Thrill, welches mit dem
Ziel entwickelt wurde eine möglichst hohe Performanz für die Verarbeitung großer Daten bei gleichzeitig einfacher Benutzbarkeit zu bieten. Das Framework verfügt jedoch über Probleme, welche sich negativ auf die Skalierbarkeit auswirken. Einige dieser Probleme basieren auf der Verwendung Hashfunktionen und Hashtabellen. Im Rahmen dieser Arbeit wurden diese Probleme analysiert und Lösungsansätze entwickelt
sowie evaluiert. Einige der Lösungsansätze wie die Verwendung einer festen Hashfunktion sowie die Implementierung einer neuen Hashtabelle auf Basis von Cuckoo Hashing wurden im Rahmen dieser Arbeit realisiert und im Anschluss bewertet. Dabei zeigte sich, dass durch Verwendung einer festen Hashfunktion Verbesserungen realisieren lassen. Es zeigte sich jedoch auch, dass die Hashtabelle auf Basis von Cuckoo Hashing über zahlreiche Probleme verfügt, wodurch der Einsatz von dieser Art von Hashtabellen in dem in der Arbeit vorgestelltem Kontext als kritisch zu bewerten ist.The amount of data generated worldwide is constantly increasing day by day. This creates several problems due to the fact that conventional technologies are unable to process the data in an acceptable time. As a result, various technologies and frameworks like the MapReduce paradigm were developed in the past. One of those solutions is the big data framework Thrill. Thrill was developed with the intention of creating a framework that offers a high performance for processing big data while offering a good usability at the same time. However, this framework has various issues that result in a negative impact on scalability. Some of those problems are based on the usage of hash tables and hash functions. In this thesis, those problems
are analyzed, and several solutions are developed and evaluated. In addition, some solutions like the usage of a fixed hash function or the implementation of a new hash table based on cuckoo hashing were realized and evaluated as part of this thesis. It is shown that the usage of a fixed hash function can have a positive impact on the performance of the framework. However, it is also shown that the hash table based o
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
Entwicklung einer Anwendung zur Analyse und Darstellung von Metadaten eines nonlinearen Imageboards am Beispiel von Safebooru (safebooru.donmai.us)
No full textIn den vergangenen Jahren ist die Popularität von sogenannten "nonlinearen Imageboards" im Internet immer weiter angestiegen. Auf solchen Imageboards sind Benutzende in der Lage, Bilder hochzuladen und zu verschlagworten. Diese hinzugefügten Informationen sind in Form von entsprechenden Metadaten für alle Bilder vorhanden.
Es gibt jedoch bis jetzt keine einfache Möglichkeit, diese Daten zu analysieren und z.B. nach Mustern oder Aufkommen zu untersuchen. Vor diesem Hintergrund wird in dieser Arbeit eine Anwendung erstellt, welche die Metadatan eines ausgewählten nonlinearen Imageboards (Safebooru) sammelt, aufbereitet und anschließend zur Verfügung stellt. Die aufbereiteten Daten werden am Ende in Form einer React-Anwendung Benutzenden zur Verfügung gestellt.
In dieser Arbeit wird dabei die Konzeptualisierung, der Entwurf, die Implementierung, das Testen und das Bereitstellen der Anwendung thematisiert. Das Ergebnis dieser Arbeit ist auf einer virtuellen Maschine der Hochschule bereitgestellt. Ebenso ist der Code der Arbeit auf GitHub einzusehen.In recent years, the popularity of so-called "non-linear imageboards" has seen a sharp increase. On such imageboards, users are capable of uploading different pictures and
adding information to them. The resulting metadata is available for every image on the imageboard. However, after all those years, there is still no simple way available to analyse the data, e.g. regarding recurring patterns or image volume. Thus, the goal of this bachelor thesis is to create an application which gathers, processes, and analyses the metadata from a selected non-linear imageboard (Safebooru).
This thesis covers the conceptualisation, design, implementation, testing, and the deployment of the application on a virtual machine. The results of this work are deployed on a virtual machine of the university where they can be accessed. The code of this work can be viewed on GitHub
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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