1,721,144 research outputs found
Analysis of the Alternative Agriculture’s Seeds Market Sector : History and Development
No full textAlternative agricultural systems, like organic and local agriculture, are becoming increasingly important in Europe to the detriment of conventional methods. As a matter of fact, sustainable agriculture, which started as a niche sector, has been able to conquer a significant share of the European agro-food market. Institutional promotion along with increasing consumer demand has allowed for the development of different agricultural models, from the farm to the fork, with an increasing focus on the ethical issues associated with the agro-food production system. For instance, the organic agriculture agro-food chain is based on four principles, namely health, ecology, fairness and care (IFOAM 2004) with the goal of competing in the global agro-food market while respecting the environment, livestock, producers, and consumers. Within these themes, the seed market represents an extremely complex part of the whole picture. The present paper analyses the historical evolution of the seed sector by identifying the main issues related to sustainable agricultural systems and protection of biodiversity. It follows the identification of different seed markets based on different farm types. The two aspects are then discussed and matched in order to identify the main issues characterizing the sector. A review of possible solutions to those problems, taking into account their ethics, is also provided
L’impostazione acustica dei teatri nei progetti del primo Neoclassicismo italiano (1762-1772)
No full textScopo del presente studio è quello di analizzare storicamente e
tecnicamente le proposte in campo acustico avanzate da Enea Arnaldi
e Francesco Milizia, i due antesignani del neoclassicismo italiano
nel settore in oggetto (§§ 1-2). Tali valutazioni verranno analizzate
e confrontate con le analoghe valutazioni che vengono oggigiorno
formulate in relazione alla progettazione acustica dei teatri
d’opera. Verrà inoltre fornita una sintesi comparativa dei rilevamenti
sperimentali effettuati in tempi recenti su teatri dello
stesso periodo (§ 3
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
L’acustica teatrale nel neoclassicismo italiano. Con una ricostruzione virtuale del “teatro ideale” di Francesco Milizia (1773)
Full text linkLo studio si propone di documentare le reazioni che suscitarono il Italia le proposte di rinnovamento dell’architettura teatrale formulate dal neoclassicismo francese. Formalmente basato sul ritorno all’impianto palladiano, detto rinnovamento principalmente si ispirava a motivazioni di egualitarismo sociale, coinvolgenti sia la visuale che l’acustica.
Nei §§ 1-2 vedremo che in Italia tali proposte furono parzialmente accolte solo da teorici dell’architettura quali Enea Arnaldi (1762) e Francesco Milizia (1772-94); furono invece respinte da tutti gli altri, Giordano Riccati compreso (1790). Le loro proposte verranno analizzate e confrontate con le valutazioni che vengono oggigiorno formulate in relazione alla progettazione acustica dei teatri ’opera. A differenza della Francia, nessuna sala fu inoltre realizzata sulla
base di tali principi. Con la motivazione di svariate ragioni principalmente sociali, economiche, e acustiche) non trovarono quindi accoglienza la pianta circolare tronca della platea, le ‘democratiche’ balconate senza divisori (al posto
degli aristocratici palchi), il recinto orchestrale incassato sotto il palcoscenico, i soffitti cupuliformi.
Lo studio verra` inoltre corredato di una sintesi comparativa dei rilevamenti sperimentali effettuati in tempi recenti su teatri italiani del periodo in oggetto (§ 3) e di una ricostruzione digitale del ‘teatro ideale’ di Milizia, con relative simulazioni acustiche (§ 4)
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
Supply CHINA Management
No full textNell’era della globalizzazione anche le imprese italiane allargano il
perimetro del loro sistema del valore alla ricerca di fornitori competitivi, più favorevoli condizioni operative e nuovi sbocchi commerciali.
Sulle ali della sua vorticosa ascesa economico-industriale la Cina è il paese che più di ogni altro offre opportunità a questa nuova frontiera della strategia d’impresa, ma è anche un contesto complesso, rischioso, distante culturalmente ancor più che geograficamente. Il libro racconta, analizza e compara l’evoluzione della supply chain di chi in Cina ha deciso di produrre, comprare e vendere, con un originale e pragmatico percorso alla scoperta di cosa fare (e non fare) per vincere la sfida della competitività
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