1,720,956 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
Integration von Free and Open Source Software zur Optimierung von Energiesystemen in ein bestehendes Framework von Energiesystem Modellen
No full textDas Transforming Energy Supply System (Modelling) Framework oder auch kurz Tessif ist ein am Energietechnik Institut der Technischen Universität Hamburg in Python
entwickeltes Framework, das den Vergleich verschiedener Softwaretools zum Modellieren
und Optimieren von Energiesystemen ermöglicht. Für den Vergleich transformiert Tessif
ein zuvor erstelltes Energiesystemmodell in die verschiedenen Modelle der in Tessif integrierten Softwaretools, die das Energiesystem anschließend optimieren. Die Ergebnisse
der Optimierungen werden abschließend von Tessif vereinheitlicht und somit vergleichbar. Zum jetzigen Zeitpunkt sind die Programme Oemof, PyPSA, FINE und Calliope
in Tessif integriert und können in Tessif für die Modellierung und Optimierung von
Energiesystemen verwendet werden.
Im Rahmen dieser Arbeit wird mit Urbs ein weiteres Programm zur Modellierung und
Optimierung in Tessif integriert. Die Integration besteht zu einem großen Teil aus der
Transformation des Energiesystemmodells von Tessifs in Urbs Modellformulierung (es2es)
sowie der Umwandlung der Optimierungsergebnisse in Tessifs einheitliche Darstellungsweise (es2mapping). In dieser Arbeit wird dabei ausführlich auf die verschiedenen Modellierungsansätze und deren Unterschiede sowie die Umsetzung der Transformation eingegangen.
Die korrekte Integration von Urbs wird anhand eines exemplarischen Vergleichs diverser Beispielenergiesystemmodelle gewährleistet. Zusätzlich werden die Unterschiede zwischen den verschiedenen Softwaretools ausgearbeitet. Abschließend werden die Ergebnisse des exemplarischen Vergleichs genutzt, um Urbs im Rahmen von Tessif einzuordnen
und die Stärken sowie Schwächen von Urbs zu identifizieren.The Transforming Energy Supply System (Modelling) Framework, or Tessif for short,
is a framework developed with Python at the Institute of Energy Technology of the
Technical University of Hamburg that enables the comparison of different software tools
for modeling and optimizing energy systems. For the comparison, Tessif transforms a
previously created energy system model into the model of the software tools integrated
in Tessif, which then optimizes the energy system. The results of the optimizations are
finally unified by Tessif and thus become comparable. Currently, the programs Oemof,
PyPSA, FINE and Calliope are integrated in Tessif and can be used within the framework
of Tessif for the modeling and optimization of energy systems.
In the context of this work, Urbs, another program for modeling and optimization, is
integrated into Tessif. The integration consists to a large extent of the transformation
of the energy system model from Tessif into Urbs model formulation (es2es) as well
as the conversion of the optimization results into Tessifs uniform representation mode
(es2mapping). Herein, the various modeling approaches and their differences as well as
the implementation of the transformation are discussed in detail.
The correct integration of Urbs is ensured by comparing various example energy system
models. In addition, the differences between the various software tools are elaborated.
Finally, the results of the comparison are used to classify Urbs in the context of Tessif
and to identify the advantages and disadvantages of using Urbs
Entwickeln eines netzbasierten Energiesystemmodells zum Vergleich von Free und Open Source Energiesystemmodellierungssoftware in Python
No full textIm Zuge der Energiewende wird der Einsatz von erneuerbaren Energien in der Energieversorgung immer relevanter, um die Treibhausgasemission zu reduzieren. Durch diese Umstrukturierung der Energieversorgung gewinnen Modellierungsprogramme für Energiesysteme immer mehr an Bedeutung. Um einen Vergleich von verschiedener existierender Modellierungssoftware durchzuführen, wird im Rahmen dieser Arbeit ein Referenzenergiesystem erstellt und für den Vergleich der Programme Oemof und PyPSA verwendet. Der Fokus dieses Referenzmodells liegt dabei insbesondere bei Netzkomponenten sowie der Struktur des Energienetzes.In the context of the energy transition, the use of renewable energies in the energy supply is becoming more and more relevant to reduce greenhouse gas emissions. Due to this restructuring of the energy supply, modeling tools for energy systems gain more and more importance. In order to compare different existing modeling software, a reference energy system is developed in this thesis and used for the comparison of the tools Oemof and PyPSA. The focus of this reference model is especially on grid components and the structure of the energy grid
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
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