1,720,958 research outputs found
I principali riferimenti normativi internazionali per il trasporto delle merci pericolose
No full textNel corso della catena logistica, le merci pericolose, se non adeguatamente imballate, stoccate e movimentate, possono potenzialmente costituire una seria e costante fonte di rischio per la salute umana e per l’ambiente circostante. Ecco quindi come, a livello internazionale, già da molti anni, sia stata avvertita la necessità di sviluppare norme riguardanti, in particolare, le diverse modalità di trasporto di tali beni allo scopo di facilitare gli scambi commerciali e garantire, allo stesso tempo, che essi possano svolgersi con elevati standard di sicurezza. Obiettivo della presente nota, è stato di offrire una panoramica dei differenti regolamenti-quadro esistenti in materia, dei loro ambiti di applicazione, dei loro contenuti e delle interrelazioni reciproche
Evolution of wastewater purification: a historical perspective on innovation, regulation and knowledge transfer
No full textTipologie e principali caratteristiche degli imballaggi per il trasporto su strada di merci pericolose
No full textIl trasporto di merci pericolose, per sua natura, è un’attività che non può circoscriversi in spazi definiti, ragione per cui la definizione delle relative norme deve essere necessariamente stabilita e condivisa a livello internazionale. Risulta evidente, dunque, la necessità di facilitare la libera circolazione di tali merci rendendo ampie garanzie per la sicurezza non solo delle persone ma anche dell’ambiente circostante. Le norme ADR (Accord européen relatif au transport international des marchandises dangereuses par route) sono prevalenti sulle singole disposizioni di ogni paese, tuttavia le competenti Autorità degli Stati hanno la facoltà di adottare, sul proprio territorio, prescrizioni aggiuntive e limitazioni specifiche relative al trasporto di alcune materie pericolose e alla circolazione su strada, ovviamente entro le limitazioni dell’Accordo. Un’importante sezione dell’ADR riguarda l’utilizzazione degli imballaggi per le merci pericolose, la loro costruzione, le prove e le verifiche a cui devono rispondere per ottenere la garanzia di idoneità al trasporto. Lo scopo della presente nota è stato di indagare circa le principali tipologie di imballaggi e modalità di contenimento delle sostanze per il trasporto in sicurezza di merci pericolose
Addressing Challenge and Upcycle of Biomasses in Wastewater Sludges
Get PDFIn the context of the management of wastewater purification plants, one of the major critical issues in the last five years has been, and continues to be, the unavailability of sites where the ever-increasing quantities of sludge produced can be disposed of. Within the perspective of minimizing and managing sludge, exploring enhanced solutions like syngas, biochar, and energy production is feasible. However, it is essential to shift the focus upstream and address the issue systematically by intervening appropriately in various sections of wastewater treatment processes. This work addresses the problem of minimizing the sludge produced in purification plants, with an interdisciplinary functional approach. An innovative decision-making digital tool has been developed that integrates the "Data-Driven" Digitalization approach with the "Knowledge Embedded" multidisciplinary one. The results deriving from the use of the software are encouraging because they allow to choose the best operational strategy in order to minimize the quantity of sludge produced by the plant
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
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
- …
