1,720,990 research outputs found
A new tool to process forecast meteorological data for atmospheric pollution dispersion simulations of accident scenarios: A Sicily-based case study
Full text linkEmergency response plans to mitigate the severity of the accidental release of hazardous compounds in the air have become a primary concern in view of the many adverse events occurred over the years in high-risk plants. To do this, an accurate estimate of forecast meteorological data to be used in dispersion models can be very useful to respond in advance to emergency situations. In this field, FORCALM is a new tool developed to elaborate European Centre for Medium-Range Weather Forecasts data on a 3D computational domain with a high-resolution grid. FORCALM data can be used to perform predictive simulations of impacts on local and regional levels by using CALPUFF modelling system. A case study relevant to an accident, occurred in the “Mediterranea” Refinery at Milazzo (Italy) in 2014, has been also examined for validation purposes. A comparison with results obtained by using CALMET modelling system and observed meteorological data, covering the area under study, is also described. The validation work has allowed confirming that predictive assessments, carried out with the help of FORCALM, lead to information regarding potential environmental impacts with a good degree of accuracy
Qualità dell’aria: il Fuzzy Environmental Analogy Index Model (FEAIM) per valutare l’idoneità delle stazioni ai fini modellistici
No full textTutte le attività volte a studiare le cause primarie e gli effetti dell’inquinamento atmosferico richiedono l’impiego di una rete di monitoraggio della qualità dell’aria ottimizzata per la valutazione dell’esposizione dei bersagli recettori agli effetti degli inquinanti aerodispersi. Nell’ambito di una collaborazione tra ARPA Sicilia e il Dipartimento di Ingegneria dell’Università di Palermo, sono state condotte ricerche per sviluppare una metodologia innovativa utile per ottimizzare l’assetto delle reti di monitoraggio della qualità dell’aria su scala regionale. L’approccio metodologico si fonda su un nuovo indice, chiamato indice di analogia ambientale del territorio (FEAI), basato sulla teoria degli insiemi sfumati - fuzzy.
FEAI è dedotto combinando due indici: l’indicatore di pressione meteorologica (MPI) e l’indicatore di pressione antropica (API). MPI permette di studiare, per il territorio esaminato, analogie orografiche e meteorologiche (in particolare anemologiche) tra aree diverse al fine di confrontarne il funzionamento fluidodinamico nello strato basso della troposfera; API ha la funzione di indicizzare gli impatti legati a fonti antropiche o naturali su scala regionale, permettendo di mettere a confronto le pressioni su zone limitate appartenenti alle medesime aree funzionali (agglomerati urbani, agglomerati industriali, altre zone).
Il modello FEAIM è stato applicato all’analisi della rete della Regione siciliana. I risultati ottenuti hanno permesso di confermare la capacità dell’indice FEAI di indagare le somiglianze tra le aree limitrofe, in termini di pressioni ambientali dovute a fonti antropiche e naturali. Inoltre, ha consentito di mettere in evidenza nuovi aspetti di funzionamento della rete e confermarne altri che già da tempo si erano manifestati, come evidenze empiriche, nelle attività di monitoraggio della qualità dell’aria
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
La profezia penitenziaria: se il carcere diventa un laboratorio sociale
Full text linkThe Author presents a comprehensive historical overview of the evolution of prison both in terms of purpose and of living conditions inside. He describes the present condition of perennial overcrowding as well as the characteristics of a large part of prison population, which make the access to alternative measures and the arrangement of a successful rehabilitation programme practically impossible. Special attention is given to such topics as recidivism and the difficult work of prison officers, social workers and doctors. From such considerations the hope inevitably springs that the future may be directed at a different use of prison and at innovative solutions shared in the international legal framework and successfully tested in some other European countries.L’autore presenta un esaustivo excursus storico dell’evoluzione del carcere sia in termini di finalità ad esso sottese, sia di condizioni di vita al suo interno. Egli giunge a fotografare l’attuale condizione di perenne sovraffollamento, anche descrivendo le peculiari caratteristiche di un’ampia fetta di popolazione penitenziaria, a causa delle quali l’accesso alle misure alternative e la predisposizione di un proficuo programma di reinserimento sul territorio, divengono praticamente impossibili. Attenzione particolare viene concessa tanto ai temi connessi alla recidiva quanto a quelli riguardanti il difficile operato degli agenti di custodia, del personale dell’area trattamentale e di quella sanitaria. Da simili riflessioni nasce, inevitabilmente, l’auspicio che il futuro sia rivolto ad un diverso utilizzo del carcere e si apra a innovative soluzioni di esecuzione penale tanto condivise nella cornice internazionale e già positivamente sperimentate in alcune realtà europee
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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