1,720,967 research outputs found
Ploutos e plousioi nella storiografia greca tra Erodoto e Senofonte
No full textIn ambito storiografico, la terminologia del ploutos presenta una certa ambiguità. La ricchezza è potenzialmente positiva, in quanto è incentivo e sostegno all’azione ed è strumento prezioso delle relazioni politiche e sociali; ma è anche un fattore di tensione all’interno della comunità e, soprattutto, favorisce lo sviluppo di forme di egoismo, che possono inibire un buon comportamento etico in ambito politico e sociale. Nel ripensamento che, a partire dalla riflessione dei poeti arcaici, la storiografia propone sul tema del ploutos si segnala per originalità il contributo di Tucidide.The use of wording referred to ploutos is ambiguous in ancient Greek historiography. On the one hand, wealth is felt as potentially positive, being an incentive and support to action; moreover, it is also a valuable tool of political and social relations. But, on the other hand, it also causes tension within the community and, first of all, it leads to forms of selfishness which can inhibit a good ethical behavior in the political and social life. Starting from the reflection of the archaic poets, Greek historiography offers a valuable reconsideration on the subject of ploutos; Thucydides’ contribution is noteworthy for its originality
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
Downstream Processes in a Microalgae Biorefinery: Cascaded Enzymatic Hydrolysis and Pulsed Electric Field as Green Solution
No full textMicroalgae are a promising source of valuable compounds, including proteins, pigments, lipids, vitamins, and ingredients for cosmetics and animal feed. Despite their potential, downstream processing remains a major bottleneck in microalgae biorefineries, particularly in achieving high extraction efficiency with low energy and chemical input. While several extraction methods exist, few balance efficiency with selectivity and sustainability. Recently, mild and selective techniques such as Pulsed Electric Field (PEF) and Enzymatic Hydrolysis (EH) have gained attention, both individually and in combination. This review provides the first comprehensive comparative analysis of PEF and EH, emphasizing their mechanisms of action, specific cellular targets, and potential for integration into a cascaded, wet-route biorefinery process. Studies involving PEF, EH, and their sequential application (PEF-EH and EH-PEF) are analyzed, focusing on microalgae species, operational conditions, and extraction yields. The advantages and challenges of each method, including compound selectivity, environmental impact, and economic feasibility, are critically evaluated. The goal is to gain insight into whether the synergistic use of PEF and EH can enhance the recovery of intracellular compounds while improving the overall sustainability and efficiency of microalgae-based bioprocessing
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
La liquidità del paesaggio culturale: dalle tracce delle civiltà antiche ai segni della civiltà industriale
No full textNella società moderna (definita liquida da Bauman), dai legami fragili e mutevoli, incerta, flessibile, vulnerabile, il paesaggio culturale, costituito da un ambiente che presenta segni dell’intervento umano testimoni della cultura di una o più epoche, ha avuto una significativa evoluzione, riflesso della stessa società che lo riconosce e lo fruisce.
È sintomatico, dal punto di vista normativo, il passaggio in Italia, in meno di un secolo, da una tutela prevalente delle «cose», comprendenti ville, parchi e giardini di interesse artistico o storico, e da una concezione estetizzante dell’ambiente naturale, inteso come «bellezze naturali panoramiche», in cui la tutela del contesto era finalizzata a decoro e godimento del bene (legge Bottai, 1 giugno 1939, n. 1089), a una tutela dei beni culturali comprendenti anche le cose immobili e mobili che rivestono un interesse particolarmente importante per la scienza, la tecnica, l’industria e la cultura in genere nonché i beni paesaggistici (Codice dei beni culturali e del paesaggio, d.l. 22 gennaio 2004, n. 42, art. 10 della l. 6 luglio 2002, n. 137).
L’archeologia dei paesaggi è quindi chiamata a considerare tra le tracce delle civiltà sviluppate, alternate e stratificate in un determinato luogo e le sue risorse, pure quelle successive alla rivoluzione industriale e all’avvento della modernizzazione, anche se invasive e non rispettose dell’ambiente stesso.
Si propone dunque di analizzare il cambiamento della definizione di paesaggio culturale (sviluppatosi dalla “teoria del contesto” che attribuiva senso pieno e valore alle opere solo se inserite nel proprio ambito culturale), attraverso il cambiamento estetico della visione dell’ambiente e degli interventi umani su di esso, nell’ambito archeologico, artistico, del restauro, con i suoi rapporti con l’ecologia e le normative internazionali per la tutela ambientale
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
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