1,720,986 research outputs found
Exergy-based comparative assessment of "Zero CO2 Emission" Coal Gasification Processes feeding H2-Fuelled Power Plants
No full textPotential and Effective Support Networks of Young Italian Adults
No full textInternational literature on individual behavior has shown the importance of the network of relationships binding individuals to the people who are close to them in everyday life. Family and other role relations are important sources of emotional and instrumental support, as well as social companionship. For the Italian scenario, the 2003 Generations and Gender Survey offers some challenges for constructing ego-centered support networks based on reasonable assumptions of the frequency of contacts and residential proximity of respondents with kin, friends and neighbors. Focusing on young Italian adults aged 18–34 years who are single or have a partner, we define two kinds of support networks—the potential support ego network and the effective support family network—with the aim of analyzing the effects of network characteristics (size and composition) on the probability of receiving help. Our findings show that couples received
more support and more often than singles. Although singles’ potential support networks were more characterized by no family ties than the ones of partners, the availability of a ‘‘comprehensive’’ network or a network not ‘‘encapsulated’’ only in the family increased the probability of receiving help in both groups. Moreover, gender differences provide evidence of distinct behavior between partners in activating their network for (family) support
Identifying a putative common binding site shared by substance P receptor and an anti-substance P monoclonal antibody
No full textSubstance P G-protein coupled receptor and the antigen recognition site of a monoclonal antibody raised against substance P share a stretch of five contiguous identical amino acids. This observation prompted us to build an atomic model of both the receptor and the antibody and to analyse their common features. In particular, we report here that a pocket of similar size and composition is present in both proteins, strongly suggesting a similarity in the mode of binding of both macromolecules to substance P. From the analysis of our models, the available data on the mode of binding of the antibody to substance P and recent data on substance P receptor mutants, we concluded that the pocket is very likely to be involved in binding of the C-terminal 'message sequence' of the tachykinin. This allowed us to suggest specific site-directed mutants of the receptor which should shed some light on the mechanism of peptide recognition by G-protein coupled receptors
Development of a novel modular simulation tool for the exergy analysis of a scramjet engine at cruise conditions
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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
Social Support Networks of Italian Couples
No full textDuring the last decades, researchers have shown great interest in the topic of social support and international literature has illustrated the importance of the network of relationships that bind an individual to the people who are close to him in his everyday life. This set of people represents the “social space” surrounding individuals (Pattison et al., 2004).
The social space can take shape in the (immediate or extended) family and the circles of friends, workmates, or neighbors; it can generate strong or weak ties that interact with individual choices, and it can take the form of emotional support, instrumental support, or social companionship.
According to this line of research, we intend: i) to analyze the Potential Support Ego (PSE)-centered networks of Italian couples along the different phases of family formation; ii) to extract structurally similar groups (PSE-network typologies) from partners’ ego-networks by means of multivariate techniques for categorical data.
More specifically, our research questions concern: the characteristics of partners’ ego-social support networks; the types of help couples receive from people outside the immediate family; the effect of network typologies on the probability of receiving help in the household life course
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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