1,720,992 research outputs found
Analisi citazionale e indicatori bibliometrici nel modello Open Access
Full text linkThis article is focused on the bibliometric methods used for research evaluation, within the well known field of the bibliometrics which uses mathematical and statistical techniques to analyze the publications distribution patterns, and to explore their impact into the scholarly communities. While the bibliometric methods are used more often in the LIS, bibliometrics offers a wide range of applications in a variety of fields of knowledge. Since the research evaluation requires a double approach: quantitative (bibliometric analysis) and qualitative (peer-review, panel...), the fundamental idea is that the measurement of the scientific knowledge uses both the methods.
Though the IF or impact factor is the most well known bibliometric index, is not the only one suggested by ISI (now Thompson) to refer. In the Open Access world are spreading a wide number of initiatives and projects regarding the “bibliometrics” field, in which are being testing alternative solutions to the traditional IF, for example the Eigenfactor, the Hirsch index and its variations like the g-index, a-index, h-b-index, tools that mark a meaningful change in this fascinating field.
While the indicators “author-produced” are the citations, those “reader-produced” are usage data collected through webserver and linkresolver logs. A quantitative bibliometric indicator of new generation is the Usage Factor UF, complementary but non substitutive of traditional or alternative impact factor indicator. It will be necessary to organize the log data collection to share methods to obtain significant analysis. The article goes over some examples of new tools/projects for citational analysis in the Web area, among these the Web Impact Factor (WIF), and for the statistical analysis of logs and data, both bringing back to the new science known as metric of the web or Webometric.
Within the OAI framework there are many research projects of the webometric type, involving the intellectual output archivied into the repositories and their impact within the constitutive processes of the scholarly communication.
The theory assuming that an open access article in more likely to be read and therefore cited is matter of international debates and object of several studies, aimed to analyze the effects of the open access model and of the download on the citational impact. The article closes with a critical report on some of the most important works investigating the validity of this theory, from the original study of Lawrence, on Nature 2001, to the most recent works, the three postulates of Kurtz, the analysis run in 2006 by the Cornell’s Library staff on the MathSciNet database, the study of Moed which imposed a completely new methodological level with the introduction of the “variable citation window”.
Useful tools for the citational bibliometric analysis, on the statistical usage measurement of the researchs for the successful data monitoring, should be in the hands of the research producers, not in the hands of those commercial oligopoles that can influence the investment strategies and the national and international policies for the research
Scholarly communication and open access : research communities and their publishing patterns [New Trends in Scholarly Communication : how do Authors of different research communities consider OA?]
Full text linkAt the time of the Budapest Declaration, self-archiving supporters looked like a revolutionary, "anti-commercial publishers" movement. Today, after some years debate (and technological innovation in research and scientific e-publishing), antagonist positions are able to compromise and consider the tradeoffs.
What is really changing in the Authors' attitude towards institutional or disciplinary repositories, and peer reviewed open access journals?
Many recent papers have investigated these topics. From these sources we can note that Biomedical Authors behave differently from Physicists, Astronomers and Mathematicians, who have been using open archives for such a long time. Therefore we intend to analyze these different trends in the diverse communities.
Several aspects also deserve a careful attention: the role of new OA journals in evaluation processes (i.e. their impact and citations), implementation and maintenance costs of institutional repositories, the evolution of bibliometric indicators.
We intend also to discuss the role of libraries in service innovation and e-publishing promotion. The main areas where a key role may be played are: institutional repository management and users' training, the promotion of OA journals and information about evaluation methods (both qualitative and quantitative).
We think that the transition towards new communication models may be a great opportunity that libraries have to be ready to support
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
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
Quid agendum ? "Net generation" e competenze digitali
No full textIt is a long time that a large discussion is open about the net generation and the need to update teaching methods. A large number of papers are published about this topic; the most relevant reviews point out that, in general, the use of social networks by the net generation does not mean that young people has natural digital skills/competencies they apply in the learning activities.
The present short review discusses the literature about this subject; different definitions of “digital literacies are considered”. In particular a JISC study “Thriving in the 21st century. Learning Literacies for the Digital Age” (LLiDA Project) is cited, because its approach to a very detailed definition of learning literacies.
Moreover, recent papers show that the search and reading approach of the net generation – though making use of the most recently available sources like Wikipedia – is lacking of selection criteria and quality evaluation skills.
In the conclusions the Author asks some questions about the best e-learning methods to teach digital literacies, in a context where the change is so fast, and the traditional LMS approach may be a waste of time and money (and, very difficult to put in practice in a time of retrenchment for Italian Universities)
Net generation and digital literacy: a short bibliographical review and some remarks
Full text linkA far reaching discussion on the net generation and the need to update teaching methods has been ongoing for a while. A large number of papers on this topic have been published. The most relevant reviews point out that by and large the use of social networks by the net generation does not mean that young people has natural digital skills/competencies they apply in the learning activities.
The present brief review discusses the relevant literature considering the various definitions of “digital literacies” . In particular an JISC study “Thriving in the 21st century. Learning Literacies for the Digital Age” (LLiDA Project) is cited, because of its approach to a very detailed definition of learning literacies.
Moreover, in spite of them making use of the most recently available sources like Wikipedia recent papers have shown that the search and reading approach of the net generation – lacks selection criteria and quality evaluation skills.
In the conclusions the Author raises questions on the best e-learning methods to teach digital literacies, in a context where the change is fast, and the traditional LMS approach may be a waste of time and money - and, very difficult to put in practice in a time of retrenchment for Italian Universities
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