1,721,074 research outputs found
Un modello a logica fuzzy per valutare gli interventi di recupero urbano
No full textNei processi decisionali relativi agli interventi di recupero urbano la chiarezza e la trasparenza giocano un ruolo primario. In questi contesti, pur trovando un’ampia applicazione, le tecniche multicriterio non sempre si di-mostrano adeguate nella rappresentazione e misura degli effetti qualitativi degli interventi come pure nel confronto delle alternative per la scelta della soluzione migliore, fasi in cui di solito le regole logiche seguite dal decisore non sono esplicitate. Nel presente lavoro viene proposta una soluzione a questi aspetti attraverso l’impiego di un sistema a logica fuzzy. Utilizzando variabili linguistiche ed espressioni del linguaggio comune sono formalizzate le regole logiche seguite del decisore nel compiere le valutazioni. Ne risulta un processo decisionale chiaro e di immediata comprensione, con ricadute positive sulla legittimazione delle scelte della Pubblica Amministrazione
Investing in prevention in the workplace: an experimental survey for the analysis of return of prevention in Italy in the construction sector
No full textActivities aimed at the prevention and reduction of work-related accidents can, if implemented, be effective in improving the Health and Safety of Workers (OSH) as an investment for companies. A systemic approach to OSH management can reduce occupational accidents and diseases and support the competitiveness of companies. Assessing the effects of OSH investments can be very complex; as heterogeneous factors often have an indirect impact on the productivity of the work process, in par-ticular the construction process, (the construction sector in Italy has the highest incidence rate of fatal accidents among all sectors). With the aim of assessing employers’ perceptions of OSH prevention investments in German companies operating in different sectors, the Istitut Arbei und Gesundheit der Deutschen Gesetzichen Unfallver-sicherung (BGAG) proposed in 2009 an evaluation tool based on a cost-benefit approach summarized by the Return of Prevention (ROP). In 2010, the International Social Security Association (ISSA) supplemented and expanded the BGAG’s experimentation with an international survey in which, in addition to quantitative data, qualitative data are also considered with the same approach. The employers of the companies involved were invited to express (subjectively) through a questionnaire the economic effects (costs and benefits) that investments in OSH in the workplace may have on the company’s balance sheet. The synthetic indicator used (ROP) to define the economic return on investment in prevention is borrowed from the Return of Investment (ROI) which traditionally expresses the profitability index of an investment with a cost-benefit approach. The aim of the paper is to investigate the perception of the effects of prevention investments in Italy in the construction sector in the Province of Rome, with the experimental release of a questionnaire, similar in structure to the ISSA’s survey, but adapted to the Italian context and to the sector in question. The results describe a reality in which investments in prevention are perceived qualitatively as very important, while their effectiveness in terms of return on initial investment is considered less consistent than in the international survey
Le biografie papali e l'informazione politica tra Cinque e Seicento
No full textNel contributo si leggono le biografie papali tra XVI e XVII secolo come veri e propri strumenti di qualificata informazione politica ad uso familiare e come depositi di una memoria funzionale al mantenimento del decoro politico e alle opportunità di impiego politico ed ecclesiastico dei discendenti. Si considerano qui principalmente le biografie di Gregorio XIII, Paolo V, Gregorio XV, Urbano VIII
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Sulle origini della stampa delle gazzette in Italia
No full textStati italiani e pubblica informazione a stampa
Variations on the Author
Get PDF“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
Get PDFWe 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
Get PDFWe 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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