1,720,996 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
Agentenbasierte dezentrale Architektur für integriertes Process Planning und Scheduling von Transport- und Produktionsprozessen
No full textUnternehmen stehen im heutigen globalisierten Markt vor großen Herausforderungen. Die zunehmende Komplexität innerhalb von Produktion und Lieferketten sowie die Notwendigkeit, individualisierte Produkte innerhalb kurzer Zeit zu entwickeln, bringen traditionelle Organisationsformen der Produktion an ihre Gren-zen. Zusätzlich werden die Märkte zunehmend volatil und unsicher, was zu vermehrten Disruptionen und sich verändernder Marktbedingungen aufgrund institutioneller Vorgaben und Kundenpräferenzen führt. Es besteht also ein großer Bedarf nach flexiblen und robusten Organisations- und Steuerungskonzepten, um auf diese Herausforderungen zu reagieren. Industrie 4.0 als neues Produktionsparadigma postuliert die automatisierte und dezentrale Entscheidungsfindung von Produkten und Ressourcen innerhalb der Produk-tion. Dabei entscheiden Produkte und Ressourcen selbstständig, auf Basis digitaler Modelle und Vernet-zung, über die Zuteilung und Bearbeitung der Aufträge und reagieren dabei auch lokal auf Störungen. In-dustrie 4.0 bietet einen Referenzrahmen, um diesen Herausforderungen mittels Digitalisierung und compu-tergestützten Entwicklungen zu begegnen. Digitale Vernetzung von Produkten und Ressourcen ermöglicht die Bildung flexibler Produktionsnetzwerke, die innerhalb eines Unternehmens oder zwischen verschiede-nen Unternehmen entstehen können. Diese Netzwerke können aus einer Vielzahl von Entitäten bestehen, was die Bedeutung der Dezentralität zur Vermeidung von Kommunikationsengpässen, Single-Points-of-Failures und langer Rechenzeiten zentraler Algorithmen noch verstärkt.
Da diese Flexibilität innerhalb der Produktion häufig nicht durch starre Förder- und unflexible Steuerungs-systeme abgebildet werden kann, entsteht der Bedarf, die Ressourcen flexibel zu verbinden und zu steuern und gleichzeitig die Skalierbarkeit des Steuerungssystems sicherzustellen. Transportmittel wie Brückenkrä-ne oder Verbünde autonomer mobiler Roboter ermöglichen den flexiblen Transport großer Werkstücke, welche für diese Arbeit aufgrund industrieller Anforderungen der Domänen Luftfahrt und Windenergie von besonderer Relevanz sind. Es besteht die Notwendigkeit, Prozesspläne zu erstellen, die die Flexibilität einer dezentral koordinierten Produktion nutzen können. Zudem müssen die Aufgaben dieser Transport – und Produktionsressourcen integriert geplant werden, um unnötige Stillstandszeiten und Verspätungen zu ver-meiden. Die Prozess- und Ablaufpläne müssen auch Handhabungskompatibilitäten, knappe Pufferungsmög-lichkeiten sowie die Aufrechterhaltung der Planstabilität berücksichtigen.
In dieser Arbeit wird ein integrierter Prozess- und Ablaufplanungsansatz für Produktions- und Transportres-sourcen entwickelt. Er umfasst eine skalierbare Architektur sowie entsprechende Algorithmen, welche auf den dezentralen Entitäten ausgeführt werden. Die integrierte Planung und Skalierbarkeit wird durch eine Architektur erreicht, die ein skalierbares Kommunikationsprotokoll und das erforderliche Informationsmo-dell für die Prozess- und Terminplanung bereitstellt. Innerhalb dieser Architektur werden geeignete Algo-rithmen zur Ableitung flexibler Prozesspläne auf Basis eines schnittstellenorientierten Modellierungsansat-zes und zur integrierten Ablaufplanung der verschiedenen Ressourcentypen entwickelt. Darüber hinaus bindet der Ansatz, basierend auf der Abschätzung der Dauer von Störungen, dynamische Ereignisse in die Umplanung mit ein und stellt einen Ansatz zur Kollisionsvermeidung gemeinsam genutzter Ressourcen be-reit. Der Ansatz wird in verschiedenen industriellen Fallstudien validiert und hinsichtlich der Skalierbarkeit, der Ausführungszeit und der Möglichkeit gleichzeitiger Auftragsallokation bewertet. Die Kommunikation skaliert linear und die Koordination eines Auftrages schließt innerhalb weniger hundert Millisekunden ab.Manufacturing companies face different challenges like rising complexity of their manufacturing operations, the need to quickly develop and produce individualised products, and disruptions of traditional production systems due to changing market conditions, institutional rules, and customer preferences. Thus, there is a significant need for flexible and robust organization and control approaches to cope with these new realities. Industry 4.0 proclaims the automated and decentralised decision-making of products and resources based on digitalization, referring to the automated coordination of job allocation and exe-cution. The decentralised coordination of products and resources also enables the local reaction to dis-turbances on the shop floor and within supply chains. Industry 4.0 provides a reference framework to uti-lize digitalization and computational developments to face these new challenges. Digitalization of products and resources enables the formation of flexible networks within and across companies. These networks can be composed of a large number of participants, which emphasises the need for a decentralised system to avoid communication bottlenecks, single-points-of-failures and long execution times of central algo-rithms.
As traditional, rigid conveyor systems and inflexible control systems cannot provide the required degree of flexibility, the need arises to flexibly connect and control these resources while maintaining the scalability of the control system. Transportation resources like overhead cranes or groups of Autonomous Mobile Robots enable the flexible transportation, even for large workpieces. The latter are of special importance to this thesis due to the industrial requirements from the domains of aircraft production and wind turbine blade production. The need arises to compose process plans that can utilize the flexibility of decentralised production systems. Furthermore, the scheduling of transportation and further auxiliary resources in an integrated manner with the production resources becomes necessary to avoid unnecessary delays and idle times. The process plans and schedules also need to incorporate logistics requirements such as handling compatibilities, scarce buffering possibilities as well as the need to maintain schedule stability.
This work develops a process planning and scheduling approach that integrates the production, transportation and further shared resources within a scalable architecture and provides the required algorithms that are executed on decentralised entities. This is achieved by an architecture that provides a scalable communication protocol and the required information model. Within this architecture, suitable algorithms are developed to derive flexible process plans based on an interface-oriented modelling approach as well as for integrated scheduling of the different resource types. Furthermore, dynamic events are incorporated within rescheduling, based on the estimation of the duration of disturbances as well as a dedicated approach for collision avoidance within shared physical spaces.
The approach is validated within different industrial case studies and further evaluated regarding the scalability, execution time and concurrency. It exhibits a linearly scaling communication behaviour and the coordination of orders is executed within hundreds of milliseconds. Concurrent negotiaton is possible but negatively influences the execution time.N
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
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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