1,721,132 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
Sea-Level Rise by 2100
Get PDFISI Document Delivery No.: 274ZI Times Cited: 0 Cited Reference Count: 0 Church, John A. Clark, Peter U. Cazenave, Anny Gregory, Jonathan M. Jevrejeva, Svetlana Levermann, Anders Merrifield, Mark A. Milne, Glenn A. Nerem, R. Steven Nunn, Patrick D. Payne, Antony J. Pfeffer, W. Tad Stammer, Detlef Unnikrishnan, Alakkat S. payne, antony/A-8916-2008; Church, John/A-1541-2012 payne, antony/0000-0001-8825-8425; Church, John/0000-0002-7037-8194 0 AMER ASSOC ADVANCEMENT SCIENCE WASHINGTON SCIENC
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
The complex network topology of trade in a globalized world
Get PDFDie Organisation von Handelsstrukturen bringt seit je her weitreichende soziale, politische sowie ökonomische Implikationen mit sich. Da die zugrundeliegenden Dynamiken von Handelssystemen a priori unbekannt sind bieten Konzepte aus der Theorie komplexer Systeme nützliche Werkzeuge, um neue Muster zu entdecken, sowie neue Hypothesen zu den Vorgängen innerhalb der Handelssysteme zu entwickeln. Einen nützlichen Ansatz stellen dabei komplexe Netzwerke dar, da Handelsströme zwischen ökonomischen Einheiten sinnvoll als Knoten und Verbindungen im Netzwerk darstellbar sind.
In dieser Arbeit erweitern wir spezielle Methoden auf komplexen Netzwerken, um die Netzwerk-Topologie des Handels auf globaler und auf nationaler Ebene zu untersuchen. Auf dem Level einzelner Industriesektoren erhalten wir neue Einblicke in die topologische Struktur des internationalen Handelsnetzwerks. Dazu führen wir neue Netzwerkmaße ein, welche die Funktion von Knoten in Subgraphen unter dem Blickwinkel, dass das Gesamtsystem durch ein Netzwerk aus mehreren Subnetzwerken dargestellt wird, beschreiben. Im Zuge der Globalisierung gewinnen bilaterale Handelsabkommen bei Entscheidungsträgern an Aufmerksamkeit und werden in zunehmender Zahl verhandelt. Wir entwickeln in dieser Arbeit einen neuen Ansatz, um die Auswirkungen dieser Abkommen auf die beteiligten Ökonomien zu analysieren und zu quantifizieren. Weiterhin behandeln wir die Fragestellung, in welchem Maß Handel als ein Übermittler von Nachfrage- und Angebotsveränderungen auf andere Industrien angesehen werden kann. Schließlich betrachten wir Handelsnetzwerke auf der Ebene von einzelnen Firmen und beschreiben die Funktion von einzelnen Knoten, insbesondere deren Rolle innerhalb von 3er-Motiven. Obwohl alle Methoden und Maße, die wir im Zuge dieser Arbeit einführen, aus Fragen im Kontext des Handels motiviert sind, sind die methodischen Konzepte auf komplexe Netzwerke in anderen Forschungsrichtungen anwendbar.The organization of trade and its patterns and structures have always had far reaching implications among social, political and economic dimensions. The underlying dynamics of trade systems are often a priori unknown and concepts from complex system theory provide useful tools to discover new patterns and to develop new hypotheses on the mechanisms of the system. Complex networks offer a particularly useful approach to trade systems, as trade flows between economic entities can be intuitively and meaningfully represented as nodes and links in a network.
In this thesis, we extend specific methods of complex networks with a focus on the relations between different subnetworks to investigate the network topology of trade on both the global and national scale. On an aggregation level considering individual industries as nodes, we obtain new insights about the topological structure of the international trade network by introducing new network measures that characterize the roles of nodes in subnetworks from a network of networks perspective. During the process of globalization bilateral trade agreements have received rising attention among policy makers and have been negotiated at an increasing pace. Here, we develop a framework to analyze and quantify impacts of these agreements on the involved economies. A further question that we address is to what extent trade can be regarded as a mediator of demand and supply spillovers to other industries. Finally, we look into trade networks at the scale of individual business firms and describe the role of nodes with a focus on 3-node motifs. Although all new methods and measures introduced in this thesis are motivated by questions in the context of trade, the methodological concepts are widely applicable to complex networks of other research disciplines
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
Sea-Level Rise by 2100
No full textISI Document Delivery No.: 274ZI Times Cited: 0 Cited Reference Count: 0 Church, John A. Clark, Peter U. Cazenave, Anny Gregory, Jonathan M. Jevrejeva, Svetlana Levermann, Anders Merrifield, Mark A. Milne, Glenn A. Nerem, R. Steven Nunn, Patrick D. Payne, Antony J. Pfeffer, W. Tad Stammer, Detlef Unnikrishnan, Alakkat S. payne, antony/A-8916-2008; Church, John/A-1541-2012 payne, antony/0000-0001-8825-8425; Church, John/0000-0002-7037-8194 0 AMER ASSOC ADVANCEMENT SCIENCE WASHINGTON SCIENC
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
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