1,721,063 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
Regional institutions and competitiveness dynamics of typical quality products in the neww EU scenery
No full textVariations 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
The role of the innovation and the behaviour of consumers and producers in different Alternative Agri-Food Networks (AAFN)
No full textIn most of agri-food system in Western Countries, over the last decades, have been emerging and progressively spreading new forms of food supply chains, often far from agribusiness and traditional channels of production and commercialization, according to the needs expressed by different actors involved at any level (producers, consumers, intermediaries, wholesalers, distributors, governative entities). These new food chains can be traced back to that set of system and initiatives going under the name of Alternative Agri-food Networks (AAFNs). They represent a different approach to global and traditional systems, moving away from them because made of a combination of one or more innovations, such as those regarding productive, processing, of know-how, societal and governmental aspects. The reasons behind the introduction of a new element in any step or node of the chain, innovating it, can be brought back to two main groups of motivations. The former, economic motivations, are supported and promoted by specific actors of the chain, while non economic reasons aim to reach an higher environmental sustainability, to support local systems or are due to cultural affiliation and altruism. Thus, it is evident that chain innovation typology largely depends on the purposes for which it is promoted and actors who make pressures for it and, directly or indirectly, make it concrete.
However, an innovation leads to a change in the dynamics of the food chain, returning in repercussions on these same actors who, for various reasons, pressed for the concretization of the innovation itself. These modifications could cause both positive and negative impacts on different spheres and affecting the overall sustainability of the chain.
Thus, the study aims to go into the relationships between actors and innovation typology and assess impacts of innovation, once introduced, on different actors and their relationship. For this reason it is carried out a qualitative analysis of innovative and traditional food chains in order to identify causes and effects of innovation. A set of qualitative criteria is provided and some indicators are proposed, to get to a preliminary comparison of the characteristics of the various food chains identified
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
Changes over time in mammary compliance values after breast augmentation
No full textCapsular contracture is the most troublesome and distressing complication after breast augmentation for both the surgeon and patient. The etiology of capsular contracture remains unclear. Clinical treatment for this complication is based on the surgeon's evaluation, the condition of the breast, and a number of other factors. In a previous study, the authors investigated whether measurement of mammary compliance as a means of assessing capsular contracture was comparable with other methods described for the assessment of capsular contracture. The purpose of this study was to evaluate whether capsular contracture varies significantly over time. A prospective study was performed to measure mammary compliance in 60 female patients who received a total of 120 implants between 2000 and 2002. The implants used were anatomic prostheses filled with cohesive silicone gel and round double-lumen prostheses filled with silicone gel and saline solution. All the patients were followed up for at least 2 years. Statistical analysis of the data also was performed to assess significance. The results showed a general trend in mammary compliance values over time
- …
