1,720,953 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
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
Techno-economic assessment of a solar-driven pyrolysis process using molten salts solar tower technology
No full textLAUREA MAGISTRALENell’ambito della transizione energetica, si prevede che i biocombustibili giocheranno un ruolo cruciale nella sostituzione dei combustibili fossili, soprattutto nei settori in cui l'elettrificazione è difficile (ad esempio, il settore dei trasporti e in particolare quello a lunga distanza). In questo scenario, una delle soluzioni promettenti è il processo di pirolisi, che può convertire varie biomasse carboniose in bio-olio, che può poi essere ulteriormente raffinato per produrre biocarburanti. Ad oggi, gli impianti esistenti bruciano i co-prodotti del processo (biochar e gas di pirolisi) per soddisfare la domanda energetica delle reazioni endotermiche di pirolisi, producendo emissioni di CO2 e perdendo prodotti che possono essere venduti sul mercato. Lo scopo di questo studio è di investigare la fattibilità tecno-economica di un nuovo impianto, in cui il calore richiesto è fornito da un sistema a torre solare a concentrazione (CST) che utilizza i sali solari come fluido termovettore. La novità di questo lavoro è rappresentata dall'accoppiamento dell'impianto CST con il reattore di pirolisi attraverso l'aggiunta di uno scambiatore di calore a fascio tubiero al suo interno, per sfruttare la potenza termica dei sali solari caldi che fluiscono al suo interno. L'impianto può lavorare in due modi: utilizzando solo l'energia solare termica prodotta o in modo ibrido, cioè bruciando i co-prodotti del processo durante le ore in cui l'impianto solare non funziona. È stata quindi condotta un'analisi delle prestazioni annuali variando le dimensioni del campo solare per multipli solari da 1 a 9, per determinare la produzione annuale di bio-olio e dei co-prodotti, e poi un'analisi tecno-economica per determinare il prezzo minimo di vendita del bio-olio che garantisce un valore attuale netto (NPV) pari a zero. Il prezzo di vendita più basso si ottiene per l'impianto ibrido, con un valore di 20,3 €/GJ (0,319 €/kg), mentre l'impianto convenzionale ha il valore più alto di 27,53 €/GJ (0,433 €/kg). La configurazione ibrida è la più conveniente in quanto consente un numero maggiore di ore di funzionamento rispetto al caso sola-only, permettendo di avere un campo solare più piccolo e un recupero anticipato del capitale speso. L'impianto solo solare ha invece un prezzo di vendita ottimale intermedio rispetto ai casi precedenti, pari a 23,4 €/GJ (0,366 €/kg), ma ha il vantaggio di avere il minore impatto ambientale. Infine, dall'analisi di sensibilità condotta, il prezzo del bio-olio è fortemente influenzato dal costo di investimento del pirolizzatore, che rappresenta una grande frazione dei costi totali dell'impianto di pirolisi, e dalla disponibilità annuale dell'impianto solare, poiché determina la quantità di bio-olio prodotto e di biochar risparmiato.In the context of energy transition, biofuels are expected to play a crucial role in replacing fossil fuels, especially in sectors where electrification is challenging (i.e. transport sector and in particular long-distance one). In this scenario, one of the promising solutions is the pyrolysis process, which can convert various carbonaceous biomasses into bio-oil, which can then be refined further to produce biofuels. To date, existing plants burn by-products (i.e. biochar and pyrolysis gas) to meet the energy demand of the endothermic pyrolysis process, producing CO2 emissions and losing products that can be sold on the market. The purpose of this study is to investigate the techno-economic feasibility of a new plant configuration, in which the required heat is supplied by a concentrating solar tower (CST) system using solar salts as heat transfer fluid. The novelty of this work is represented by coupling CST plant with pyrolysis reactor through the addition of a shell-and-tube heat exchanger within it, to exploit the thermal power of hot solar salts flowing into it. The plant can work in two ways: using only the solar thermal energy produced (CSP based case) or in a hybrid way, i.e. burning the by-products of the process during the hours when the solar plant is not working. An annual performance analysis was then conducted varying the solar field size for solar multiples from 1 to 9, to determine the annual production of bio-oil and by-products, and then a techno-economic analysis was carried out to determine the minimum selling price of bio-oil that guarantees a zero net present value (NPV). The lowest selling price is obtained for the hybrid plant, with a value of 20.3 €/GJ (0.319 €/kg), while the conventional plant has the highest value of 27.53 €/GJ (0.433 €/kg). The hybrid configuration is the most cost-effective since it allows a higher number of operating hours than solar-only case, enabling a smaller solar field and an earlier payback of the capital expenditure. The solar-only plant has an intermediate optimum selling price compared to the previous cases, at 23.4 €/GJ (0.366 €/kg) but has the advantage of having the lowest environmental impact. Finally, from the sensitivity analysis conducted, the price of bio-oil is strongly influenced by the investment cost of the pyrolizer, which represents a big fraction of the total costs of the pyrolysis plant, and by the annual solar plant availability, since it determines the quantity of bio-oil produced and saved biochar
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
- …
