1,721,017 research outputs found
Contratti pubblici e prevenzione della corruzione
Full text linkIl presente volume sviluppa una ricerca interdisciplinare sulla natura della corruzione, le sua manifestazione nella società e nelle istituzioni, la sua incidenza sul potere politico e gli strumenti di prevenzione, esaminati anche alla luce dello sviluppo delle nuove tecnologie. Esso, in particolare, raccoglie gli atti del convegno dal titolo "La prevenzione della corruzione: quadro normativo e strumenti di un sistema in evoluzione" svoltosi il 5 ottobre 2018 all'Università di Pisa, nell'appena restaurato Palazzo de "La Sapienza", storica sede della facoltà di Giurisprudenza
Presenting and communicating statistics: principles, components and their quality assessment. A proposal
Full text linkThe NTTS (New Techniques and Technologies for Statistics) seminar is an international scientific conference on the impact of new technologies on statistical collection, production and dissemination systems. The conference is intended to stimulate and facilitate the preparation of new innovative projects for the 7th Framework Programme for Research and Development, to encourage co-operation and possible building of consortia by researchers with the aim of enhancing the quality and usefulness of official statistics.
NTTS conferences have been organised in 1992, 1995 and 1998. The last one has been organised jointly with the ETK seminar in 2001 in Creta.
The conference is combined with the ETK (Exchange of Technology and Know-how) which aims to provide a forum where producers of official statistics and developers of statistical methods and tools can meet, network and identify problems to be solved
Presentare e comunicare le statistiche: principi, componenti e valutazione della loro qualità
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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
Assessing the quality of communication in statistics: the application of a model
Full text linkIn a previous work, we dealt with the fundamental components involved in an effective statistics communication process, namely ethics, rhetoric and aesthetics. The present paper aims at building a conceptual model for evaluation purposes and at developping a practical approach to assess the effectiveness of statistical communication, particularly when official data are of concern.
The first part of the paper presents the conceptual model, by identifying
- the dimensions to evaluate (the “codes”, i.e. Invention, Layout, Expression and Execution),
- the evaluation criteria (Appropriateness, Correctness and Clarity) and
- the components of the communication process (Audience, Channel, Context, Topic and Data).
In order to assess the conceptual model, a compliance procedure was drawn and applied on six official publications, five produced by some National Statistical Bureaus and international organizations. The procedure allowing the quality criteria to be assessed (at total and component level) requires subjective evaluations to be collected from a group of selected judges through an assessing table. To reduce the complexity of the evaluation process, the judgements were expressed through a simple binary scale (presence / absence).
Subsequently, data collected through the assessing table for each publication have been reduced (through the modal criterion) by condensing the scores expressed on the dimensions for each criterion (Appropriateness, Correctenss and Clarity).
The successive data analysis aimed at getting insight into the quality weaknesses and strengths of the publications to be assessed. The analysis is devoted primarily to comparing publications both in terms of general quality and along each single quality criterion. Further focuses are performed, stratifying data by communication components.
Traditional statistical data analysis procedures based upon linear mathematical instruments, hardly applicable on data discrete in their nature.In particular, dealing with binary data rises some methodological difficulties, especially in the aggregating process aimed at getting unidimensional scores allowing for a direct comparison and ranking of statistical units (publications, in our case). Admittedly, the traditional approach can be criticized in many respects. Aggregating variables of different nature is not always as meaningful as it may appear. Moreover, scaling tools tend to impose a quantitative latent model to the data, which is often forcing and does not respect their true qualitative nature.
Recently, new methodolgies have been proposed aimed at dealing with discrete ordinal data, when evaluation, comparisons and rankings are of concern. Such methodologies are based on Partially Ordered SEt Theory (POSET theory), part of Discrete Mathematics that offers many tools and results to explore and analyze the structure of discrete datasets, like that of interest in the present study. Posets of finite cardinality can be conveniently depicted by means of certain directed acyclic graphs, called Hasse diagrams.
Based on its score on each evaluation criterion, each publication is given a particular position in the diagram. The structural information contained in the resulting pattern was then extracted by means of poset tools and was used to perform comparisons among the publications, ranking them in quality terms.
The application aims just at showing how the procedure (assessing table, data collection and POSET data analysis) can be used to reach meaningfull and interpretable results allowing different pubblications to be compared and ranked with reference to the evaluation criteria
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