1,720,954 research outputs found
Hyperspectral Imaging for the On-line Identification and Classification of End-of-Life Lamps
No full textThe lighting market is expected to have revenues of over 100 billion euros in 2020. Despite the evident economical
potentialities of this sector, the high products variability, complexity and the presence of materials with potential
negative environmental impacts, make lamps recycling processes a challenging task. The Directive 2002/96/EC
defines 80% as minimum recovery target for lamps containing mercury. Recovery processes currently adopted for
End-Of-Life lamps treatment consist of a preliminary manual phase for sorting different lamp typologies, strictly
correlated to the operator ability of recognize the lamps category. The present work proposes a new approach based
on the application of hyperspectral vision systems for the automatic identification of End-of-Life lamps, aimed at
optimizing recycling processes. These solutions could facilitate the securing of lamps containing hazardous materials,
with the aim of maximizing the degree of purity of the recovered key metals and rare earths, stimulating potential
secondary raw materials markets
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
Analisi dei dati di 17 anni di monitoraggio ambientale dell'impianto di termovalorizzazione dei rifiuti di Cremona
No full textLAUREA MAGISTRALEScopo della presente tesi è quello di aggiornare e approfondire l’analisi che annualmente viene svolta dal Dipartimento di Ingegneria Civile e Ambientale (D.I.C.A.) del Politecnico di Milano relativa alle emissioni di macroinquinanti e microinquinanti dall’impianto di termovalorizzazione rifiuti di Cremona, registrate in 17 anni di monitoraggio delle emissioni dell’impianto (1998-2014) e della qualità dell’aria nelle postazioni di misura più vicine all’impianto. Il presente lavoro ha confrontato dapprima i dati delle concentrazioni in emissione dall’impianto e la qualità dell’aria per l’anno 2014; sono inoltra stati elaborati i dati della campagna di misura invernale di diossine, elementi tossici, mercurio, particelle ultrafini e nanoparticelle per il 2015. Per quanto riguarda i macroinquinanti in emissione, la maggior parte di essi rispettano i limiti semiorari previsti dalla normativa vigente, mentre tutti rispettano i limiti sui valori del 97°percentile e i limiti giornalieri. Le concentrazioni in atmosfera rilevate in prossimità dell’impianto nella maggior parte dei casi rispettano il limite previsto per la tutela ambientale e per la salute umana. Per quanto concerne le emissioni di microinquinanti, tutti i valori risultano inferiori ai limiti ammessi. E’ stata infine eseguita una analisi di correlazione tra emissioni e qualità dell’aria su 17 anni di attività dell’impianto, che ha rilevato che ad emissioni maggiori non corrispondono maggiori concentrazioni di inquinanti in atmosfera. Inoltre quest’ultime risultano essere maggiori nei giorni in cui l’impianto è spento, anche se nella maggior parte dei casi non in modo statisticamente significativo. Complessivamente dai risultati è emerso che l’impianto di termovalorizzazione dei rifiuti di Cremona nel periodo considerato, pari a 17 anni, non ha avuto ricadute ambientali sulla qualità dell’aria nelle zone circostanti
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
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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