1,721,113 research outputs found
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
Una valutazione degli effetti della diffusione degli impianti per il biogas sui contratti di locazione dei terreni agricoli
Get PDFLa diffusione di impianti a biogas per la produzione di energia elettrica e termica da substrati di origine agro-zootecnica, stimolata principalmente dal sistema di incentivazione diretta dell’energia prodotta da parte del GSE, è una causa rilevante alla base di alcune distorsioni che hanno interessato il mercato fondiario delle aree interessate dal fenomeno. Se da un lato, lo sviluppo di questa tecnologia ha dato la possibilità all’imprenditore agricolo di diversificare il proprio reddito e di ottenere nuove opportunità di ricavo sfruttando materiale di scarto come letame e liquame, dall’altro la concentrazione degli impianti in aree a prevalente vocazione maidicola per la zootecnia ha modificato alcuni equilibri di mercato che meritano di essere analizzati in quanto strettamente collegati alla filiera di produzione primaria.
Il terreno agricolo assume, dunque, una potenziale duplice destinazione, alimentare o energetica, e la scelta tra le due non può essere esclusivamente di natura economica in considerazione anche delle questioni etiche sollevate recentemente da più parti in merito proprio a questa destinazione no-food dei fondi e delle relative colture. Di conseguenza, anche il mercato delle compravendite ma soprattutto degli affitti fondiari ne ha subito delle modificazioni.
L’obiettivo del presente studio è, dunque, quello di verificare se esiste un legame tra la diffusione di impianti a biogas e il prezzo di affitto dei terreni agricoli (inteso come richiesta di terreni per l’attività di produzione della biomassa), in un determinato contesto territoriale. L’analisi ha considerato dei parametri “tradizionali”, come l’incidenza sul prezzo di affitto dei terreni agricoli da parte del prezzo dei cereali e la presenza della contributo PAC (in termini di pagamento diretto) e ne ha ipotizzato altri introdotti dalla nuova situazione come la prossimità ad impianti di biogas, condizione che in alcune aree appare essere imprescindibile dalla valutazione monetaria del canone di affitto.
Si deve sottolineare anche che il legame tra filiera energetica da biogas e attività agricola è favorito dal fatto che, per ottenere una fiscalità agevolata, la società proprietaria dell’impianto abbia all’interno del proprio organigramma almeno un imprenditore agricolo professionale (IAP) e che i substrati di alimentazione derivino per almeno il 51% da terreni di proprietà o in affitto della società stessa. Ciò ha rappresentato ovviamente una motivazione importante per la ricerca di terreni, influenzandone la dinamica del mercato.
Gli autori, sulla base di tali considerazioni e di un’analisi della bibliografia sulla filiera agro-energetica e il suo sviluppo territoriale (Fabbri et alii, 2013; GSE, 2013; Zezza, 2008), hanno isolato alcuni parametri ritenuti di maggior rilievo sull’andamento del mercato fondiario al fine di verificare e valutare l’influenza degli stessi sul valore dei canoni di affitto dei terreni
Millennial consumers' wine consumption and purchasing habits and attitude towards wine innovation
Get PDFThe work is focused on Italian Millennials, currently representing one of the most interesting target for wine producers. In the US, Millennials’ wine consumption behaviour is already well surveyed; however, in the Old World, this phenomenon is an unexplored area. The aim of this study is to identify wine consumption and purchasing behaviour of Italian Millennials and to explore their reluctance or readiness to purchase and try unfamiliar or new wines or wine styles. The methodology includes two steps: (1) an explorative analysis, carried out through focus groups; and (2) a quantitative survey based on a specific questionnaire submitted vis a vis to consumers in 2017. Wine Neophobia Scale studied by Ristic et al., 2016, has been applied to assess whether Italian Millennials are neophobic or neophilic. Data elaboration includes an Exploratory Factor Analysis to identify latent factors on wine consumption and purchasing habits and a multivariate linear regression to explore the level of Neophilia and wine consumption and purchasing habits. Results show that Italian Millennials are rather neophilic, that is have a positive approach to unfamiliar or new wines. The wine purchasing and consumption habits show an uncertain Millennial consumers’ approach to wine novelties
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
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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