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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
Supplement to Resource effiency indicator-based decision support for the operation of batch and mixed batch-continuous processing plants
No full textResource effiency indicator-based decision support for the operation of batch and mixed batch-continuous processing plants
Get PDFSteigende Konzentrationen von Treibhausgasen in der Atmosphäre sind der Grund für
den globalen Klimawandel. Da die chemische Industrie wesentlich zu den Treibhausgasemissionen
beiträgt, schaffen politische Entscheidungsträger Anreize und Gesetze, um die
Industrie zu einer nachhaltigeren Produktion zu bewegen. In dieser Arbeit wird ein Rahmen
zur Definition und Nutzung von Echtzeit-Ressourcene zienzindikatoren (REI) entwickelt,
um die Ressourceneffizienz industrieller Produktionsprozesse kontinuierlich zu
überwachen und zu optimieren. Die Ressourceneffizienz ist eine mehrdimensionale Größe,
die in Relation zur Wirtschaftlichkeit bewertet werden kann. Der Fokus der Arbeit liegt
dabei auf Batch-Prozessen und Prozessen, die diskontinuierliche und kontinuierliche Teilprozesse
kombinieren. Diese stellen eine Herausforderung für die korrekte Erfassung relevanter
Prozessgrößen und die anschlie ende Analyse dar. Das vorgeschlagene Propagationskonzept
ermöglicht es, den Gesamtwirkungsgrad der Anlage auf Basis der Leistung
ihrer Komponenten zu berechnen. Die daraus resultierenden REIs spiegeln die technische
Leistung der Anlage wieder und werden zur Optimierung der gesamten Ressourceneffizienz eines Anwendungsbeispiels verwendet. Die Optimierung der Ressourceneeffizienz
stellt ein mehrdimensionales Optimierungsproblem dar, bei dem die Pareto-optimalen Betriebspunkte
die möglichen Kompromisse zwischen konkurrierenden Interessen angeben.
Die Auswahl eines gewünschten Betriebspunktes aus der Paretomenge ist nicht trivial und
kann sich ändernden Präferenzen folgen. Daher befasst sich der zweite Teil der Arbeit mit
der Synthese eines effizienten und effektiven Entscheidungsunterstützungssystems (Decision
Support System, DSS) zur Auswahl eines Betriebspunktes mit dem gewünschten
Leistungsprofil. Die Methodik wird auf ein Beispiel angewendet und durch eine experimentelle
Usability-Studie validiert. Damit leistet diese Arbeit einen Beitrag zur Optimierung
der Ressourceneffizienz in der Prozessindustrie durch die Identifikation von
ressourcenoptimalen Betriebszuständen. Die ganzheitliche Betrachtung der Ressourceneffizienz in Batchprozessen stellt eine wichtige Erweiterung der industriellen Praxis dar, die
sich derzeit in der Regel auf eine Energieeffizienzanalyse nach ISO50001 beschränkt.Increasing concentrations of greenhouse gases (GHG) in the atmosphere are the reason
for global climate change. Since the chemical industry is a signficant contributor to the
GHG emissions, policy makers are creating incentives and legislation to steer the industry
towards a more sustainable production. This thesis proposes a framework to defie and
utilize real-time resource effiency indicators (REI) to constantly monitor and optimize
the resource effiency of industrial production processes. Resource effiency is a multidimensional
entity that can be evaluated in relation to the economic performance. The
focus of the thesis is on batch- and hybrid - coupled batch and continuously operated -{ processes that introduce further challenges for the correct recording of relevant process
variables and the subsequent analysis. The proposed propagation concept makes it
possible to calculate the overall effiency of the plant based on the performance of its
components. The resulting REIs reflect the technical performance of the plant and are
used to optimize the overall resource effiency of an application case. Optimizing the resource
effiency of a process poses a multi-dimensional optimization problem, where the
Pareto optimal operating points reflect the potential trade-offs between competing interests.
The selection of a desired operational point among the optimal set is not trivial and
may be subject to changing preferences. Thus, the second part of the thesis addresses the
synthesis of an effcient and effective decision support system (DSS) to select an operating
point with the desired performance profile. The methodology is applied and validated by
an experimental usability-study. In summary, the thesis contributes to the optimization
of resource effiency in the process industry by identifying resource-optimal operating
conditions. The holistic consideration of resource effiency in batch processes represents
an important extension of industrial practice, which is up to now usually limited to an
energy effiency analysis according to ISO50001
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
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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