1,720,976 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
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
Optimal control of wind farms for TSO-DSO coordinated reactive power management
Get PDFLAUREA MAGISTRALELa crescente diffusione degli impianti di generazione da fonte rinnovabile connessi alle reti di
distribuzione pone diverse sfide ai metodi tradizionali di operazione dei sistemi elettrici, sia
a livello di distribuzione sia di trasmissione. La Generazione Distribuita (GD) offre d’altro
canto anche diverse opportunità, soprattutto in termini di regolazione della potenza rettiva.
Il controllo della potenza reattiva e delle tensioni in un sistema ad alta penetrazione
di Fonti Rinnovabili Non Programmabili (FRNP), richiede una crescente coordinazione tra
il gestore del sistema di trasmissione (TSO) e i gestori dei sistemi di distribuzione (DSO),
al fine di sfruttare in modo ottimale il potenziale offerto dalla GD.
Questo lavoro di tesi si concentra sulla coordinazione tra TSO e DSO in Germania
all’interfaccia tra l’alta e l’altissima tensione (AAT), e sul controllo ottimale dei parchi
eolici per la gestione dei flussi di potenza reattiva. A tal fine è stato sviluppato un programma
modulare di Optimal Power Flow (OPF), con ottimizzazione Multi-Obbiettivo
(MO). L’OPF è stato poi usato per costruire uno schema di interazione basato sul calcolo
della flessibilità in termini di potenza reattiva fornibile dalla rete di distribuzione e sul
successivo dispacciamento della stessa da parte del TSO in coordinazione coi generatori
sincroni. Il sistema sviluppato permette di tenere in considerazione i vincoli e le esigenze
di entrambi i sistemi minimizzando lo scambio di informazioni richiesto.
Il metodo proposto è stato validato tramite simulazioni su una porzione della rete di
trasmissione tedesca con connessa una rete di distribuzione a 110-kV collocata nel nord
della Germania e avente 1.6 GW di potenza eolica connessa. Diversi tipi di setpoint per
il DSO sono stati investigati con successo, dimostrando la possibilità di fornire anche valori
di tensione o potenza reattiva specifici per ogni punto di connessione. Anche diversi
metodi di controllo per i parchi eolici sono stati sviluppati nell’OPF. I risultati di questo
lavoro suggersicono che è possibile e anche conveniente coinvolgere le reti di distribuzione
e la GD ivi connessa nella regolazione di tensione e di potenza reattiva di intere regioni.The growing importance of renewable generation connected to distribution grids poses several
challenges to traditional grid operation methods, at both distribution and transmission
level. Distributed Generation (DG) offers on the other hand also opportunities, especially
when it comes to reactive power provision. Voltage and reactive power control in systems
with high penetration of Variable Renewable Energy Sources (VRES), require an increased
coordination between the Transmission System Operator (TSO) and the Distribution System
Operator (DSO) in order to exploit DG potential in the optimal way.
This Master Thesis addresses the coordination between TSO and DSO at the High
Voltage (HV)-Extremely High Voltage (EHV) interface in Germany and the optimal use of
wind farms for reactive power management. For this purpose, a modular Optimal Power
Flow (OPF) tool, featuring Multi Objective (MO) optimization, is developed. The OPF
tool is used to build a practical and effective interaction scheme based on sequential optimizations
to evaluate the reactive flexibility potential of distribution networks and dispatch
them along with traditional synchronous generators. The scheme developed allows taking
into account constraints and needs of both systems keeping to a minimum the information
exchange.
The proposed method is evaluated for a real German 110-kV grid with 1.6 GW of wind
power and the surrounding transmission system. Different types of set points are investigated,
showing the feasibility for the DSO to fulfill also individual voltage and reactive
power targets over multiple connection points. Different wind farm control modes are also
proposed and implemented in the OPF. The results of this work, suggest the feasibility and
the convenience of involving distribution grids and connected DG in the voltage control
concept of entire grid regions
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
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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