1,721,060 research outputs found
Corpi in connessione: la sintonizzazione affettiva che promuove il benessere del bambino
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Blue and green hydrogen energy to meet European Union decarbonisation objectives. An overview of perspectives and the current state of affairs
No full textGiven the importance of the energy system transition towards more sustainable models consistent with Sustainable Development Goal 7, this article is a narrative literature review regarding the production technologies and handling methods of blue and green hydrogen to meet the European Union decarbonisation objectives set by 2030. The European hydrogen use roadmap seems difficult to implement because, although technologies have matured, their large-scale application has been hindered by technical and infrastructure barriers. Green hydrogen is still hardly competitive with fossil fuels-based hydrogen production both for performance factors and for the availability of renewable energy, already needed for other uses in a decarbonised electricity market. Blue hydrogen production may pave the way to green hydrogen, but short-term implementation of these technologies is borderline. Adaptating and upgrading hydrogen storage and deployment, together with regulations for international trade, must be a priority. Finally, objectives and targeted strategies that are more realistic should be executed, with attention focused primarily on sectors that cannot take advantage of electrification, such as heavy industry and heavy-duty transport.(c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved
Predictors of parenting stress trajectories in premature infant–mother dyads
Full text linkThis prospective longitudinal study examined predictors of parenting stress trajectories over time in a sample of 125 mothers and their preterm infants. Infant (multiple birth, gestational age, days hospitalized, and neonatal health risks) and maternal (socioeconomic, education, depressive symptoms, social support, and quality of interaction during infant feeding) characteristics were collected just prior to infant hospital discharge. Parenting stress and maternal interaction quality during play were measured at 4, 24, and 36 months corrected age. Hierarchical linear modeling was used to analyze infant and maternal characteristics as predictors of parenting stress scores and change over time. Results indicated significant variability across individuals in parenting stress at 4 months and in change trajectories. Mothers of multiples and infants with more medical risks and shorter hospitalization, and mothers with lower education and more depressive symptoms, reported more parenting stress at 4 months of age. Parenting stress decreased over time for mothers of multiples and for mothers with lower education more than for mothers of singletons or for mothers with higher educational levels. Changes in parenting stress scores over time were negatively associated with maternal behaviors during mother-infant interactions. Results are interpreted for their implications for preventive interventions.This prospective longitudinal study examined predictors of parenting stress trajectories over time in a sample of 125 mothers and their preterm infants. Infant (multiple birth, gestational age, days hospitalized, and neonatal health risks) and maternal (socioeconomic, education, depressive symptoms, social support, and quality of interaction during infant feeding) characteristics were collected just prior to infant hospital discharge. Parenting stress and maternal interaction quality during play were measured at 4, 24, and 36 months corrected age. Hierarchical linear modeling was used to analyze infant and maternal characteristics as predictors of parenting stress scores and change over time. Results indicated significant variability across individuals in parenting stress at 4 months and in change trajectories. Mothers of multiples and infants with more medical risks and shorter hospitalization, and mothers with lower education and more depressive symptoms, reported more parenting stress at 4 months of age. Parenting stress decreased over time for mothers of multiples and for mothers with lower education more than for mothers of singletons or for mothers with higher educational levels. Changes in parenting stress scores over time were negatively associated with maternal behaviors during mother–infant interactions. Results are interpreted for their implications for preventive interventions
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
Does prosody make the difference? A meta-analysis on relations between prosodic aspects of infant-directed speech and infant outcomes
Full text linkInfant-directed speech (IDS) is the particular voice register observed in the majority of parents in interaction with their infants and differs from natural speech used in conversations with adults by showing exaggerated prosodic features. These prosodic features are supposed to have effects on regulating infant arousal and attention, fostering infant pre-linguistic and linguistic competences and enhancing the expression of positive affect. The present set of meta-analyses was conducted to test these associations and the role of moderators during the first two years of infant life. The results confirmed an overall association between IDS prosody and infant outcomes with prosodic values typical of IDS associated with better outcomes. This association was confirmed for attentional, pre-linguistic and linguistic outcomes with a greater effect on pre-linguistic than linguistic outcomes. An insufficient number of studies was found to test the association with infant emotion expression. Many limitations in the existing body of literature were found, such as a lack of empirical papers exploring IDS prosody in relation to infant outcomes using natural observations. The results and limitations were discussed in light of the necessity to examine the interplay between the quality of IDS prosody and other aspects of parental communicative and caregiving competences. To do so, the contribution of scholars from different fields is needed with the aim to fully understand the multidimensional determinants and influential mechanisms of IDS. © 2017 Elsevier Inc
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
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