1,721,143 research outputs found
Generazione automatica di modelli tirante-puntone per il design delle strutture in calcestruzzo armato soggette ad azioni sismiche
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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
Analysing the pace of the energy transition under different cumulative CO2 budgets
No full textUnder the pressing need for decarbonisation, most industrialized countries are targeting net-zero CO2 emissions by mid-century. The pathway to the net-zero configuration is as important as the final goal, since a lack of containment of the cumulative CO2 emissions may enhance climate impact effects and force larger efforts for negative emissions. The main objective of this article is to investigate the effects of cumulative CO2 emission budgets in shaping the long-term transformation of national energy systems, using Italy as a case study. By comparing three scenarios with different budgets, the analysis provides insights into their impact on technology deployment, infrastructure development, and timing of decarbonisation actions. The analysis is developed with the open-source model FENICE (Future Energy traNsition multI-seCtor model), which is here fully presented for the first time. It provides a comprehensive multi-period approach to analyse multi-vector energy systems with multi-node and multi-sector resolutions. Based on the oemof framework, FENICE considers the five main energy carriers (electricity, hydrogen, fossil and biogenic CH4, liquid fuels, biomass), detailing their transmission infrastructures and tracking the CO2 flows. Results confirm the expected surge of renewable energy sources in all scenarios, combined with programmable technologies (power generation or energy storage) as well as carbon capture. Energy infrastructures emerge as key enablers of decarbonisation, facilitating renewables installation and highlighting the relevance of their detailed modelling. Under low CO2 budgets, the system development is impacted by installation rate limits and the urgency of new measures forces large negative emission contributions, leading to diverse CO2 pipeline designs and transport dynamics
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
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