1,721,086 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
Transition to Sustainable Energy Technologies: Pathways, Sources, Mobility
No full textThis book explains the challenges related to global energy transition, focusing on decarbonization, renewable technologies, and sustainable mobility. It offers a comprehensive exploration of integrated socio-economic, environmental, and technological perspectives and provides actionable solutions and practical pathways for transitioning to sustainable energy systems. Designed to be used in short academic courses, this textbook is an excellent foundational text for upper-level undergraduate and graduate students in engineering and environmental sciences taking specialized courses in energy systems, renewable technologies, climate change mitigation, and environmental impacts. It is also a great resource for professionals and policy makers involved in energy projects. Features: • Offers an interdisciplinary approach to energy transitions combining theoretical frameworks with practical applications. • Explores the full spectrum of energy systems, comparing conventional to renewable sources, energy vectors, and energy-storage technologies. • Incorporates real-world data from leading institutions and integrates key historical milestones like the Paris Agreement with forward-looking trends. • Highlights cutting-edge innovations, including solar and wind energy, hydrogen, energy-storage systems, synthetic fuels, and smart grids, and emphasizes their integration into energy systems and sustainable mobility solutions. • Bridges the gap between socio-economic, environmental, and technological perspectives. The Open Access version of this book, available at https://www.taylorfrancis.com, has been made available under a Creative Commons Attribution-Non Commercial-No Derivatives (CC BY-NC-ND) 4.0 license
Linguistic validation of a questionnaire for the diagnosis of sleep-related breathing disorders in children
No full textOBJECTIVES. The aim of this paper was to find in the literature the best diagnostic accuracy questionnaire for the diagnosis of sleep-related breathing disorders (SRBD) in children and to validate it in Italian language.MATERIALS AND METHODS. A detailed electronic bibliographic research was conducted to select the most accurate questionnaire in the literature. This questionnaire was subjected to translation and adaptation to the Italian version through a process of forward/backward translation and of cognitive debriefing. During the cognitive debriefing step, a sample of 20 subjects (6 males and 14 females, mean age 40.5 years) was randomly selected and tested for determining the comprehension, understanding, appropriateness and cultural significance of the Italian translated questionnaire.RESULTS. The best diagnostic accuracy questionnaire was the Pediatric Sleep Questionnaire (PSQ) in 22 items (PSQ-SRBD scale). At the end of the first step of linguistic validation process, a first Italian version of the questionnaire was released, which was improved at the end of the cognitive debriefing process.CONCLUSIONS. The PSQ-SRBD scale was the questionnaire with the best di- agnostic accuracy. Thanks to the Italian validated version, it may be used, after psychometric evaluation, as a screening tool to identify SRBD in the Italian pediatric population
Metodi avanzati per la verifica a fatica di giunti saldati di testa
No full textLo scopo principale del presente lavoro è la valutazione della
resistenza a fatica di un giunto saldato di testa, tipico della
carpenteria pesante ed in particolare delle applicazioni navali,
al variare di diversi parametri geometrici caratterizzanti la
giunzione stessa. Allo scopo, sono stati utilizzati tre differenti
metodi di predizione della vita a fatica, ovvero l'Effective
Notch Stress Approach, che è ormai di uso comune ed è supportato
da ampia bibliografia, il metodo della Strain Energy
Density (SED) ed il Peak Stress Method (PSM), due approcci,
quest'ultimi, di recente introduzione nella letteratura
scientifica ed ancora in fase di sperimentazione in ambito
industriale. Si sono inoltre condotte tutte le analisi mediante
l'impiego di due distinti codici di calcolo agli elementi finiti:
ANSYS® ed ADINA®. Il servirsi di diversi software FEM ha
permesso di verificare la bontà dei risultati ottenuti, di far
emergere alcune peculiarità fondamentali relative ai metodi
di estrapolazione dei valori dai punti di integrazione degli
elementi finiti e di estendere l'approccio del PSM ad un altro
software oltre a quello proposto dall'autore del metodo
(ANSYS®).The main aim of this work is the fatigue strength assessment of
a butt joint with weld reinforcement, typically used in steel
works and especially in shipbuilding applications when varying
different geometric parameters of the welded joint; to
this purpose, three different approaches for fatigue strength
estimates were applied, i.e. the Effective Notch Stress Approach,
which is now commonly used and it is supported by
a comprehensive bibliography, the Strain Energy Density approach
(SED) and the Peak Stress Method (PSM), the latter
ones newly introduced in scientific literature and still being
tested within industrial practice. Furthermore, all analyses
were carried out using two different finite element codes:
ANSYS® and ADINA®. The application of different FEM
software allowed verifying the quality of obtained results,
disclosing certain essential aspects related to the extrapolation
of values from integration points of finite elements and
extending the Peak Stress Method to an additional software
with respect to that proposed by the author of the method,
i.e. ANSYS®
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