1,721,041 research outputs found
I Prodotti agroalimentari e floricoli tipici tra conservazione e innovazione
Full text linkRecent EU and National policies for agriculture and rural development are mainly focused to foster the production
of high quality products as a result of the increasing demand of food safety, typical foods and traditional processing
methods. Another word very often used to describe foods in these days is “typicality” which pools together
the concepts of “food connected with a specific place”, “historical memory and tradition” and “culture”. The importance
for the EU and the National administrations of the above mentioned kind of food is demonstrated, among
other things, by the high number of the PDO, PGI and TSG certificated products in Italy.In this period of global markets and economical crisis farmers are realizing how “typical products” can be an opportunity
to maintain their market share and to improve the economy of local areas. At the same time, new tools and strategy are needed to reach these goals. A lack of knowledge has being recognized also on how new technologies
and results coming from recent research can help in exploiting traditional product and in maintaining the
biodiversity. Taking into account the great variety and richness of typical products, landscapes and biodiversity, this
report will describe and analyze the relationships among typicality, innovation and research in horticulture.At the beginning “typicality” and “innovation” will be defined also through some statistical features, which ranks
Italy at the first place in terms of number of typical labelled products, then will be highlighted how typical products
of high quality and connected with the tradition and culture of specific production areas are in a strict relationship
with the value of agro-biodiversity.Several different examples will be used to explain different successful methods and/or strategies used to exploit and
foster typical Italian vegetables, fruits and flowers. Finally, as a conclusion, since it is thought that innovation should
be compatible with typical products without interfere and modify the link between product and area of production
the role of research will be defined and quantified
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
Valutazione di tecniche di produzione florovivaistica per il verde ornamentale urbano
No full textObiettivo delle attività era, in diverse aree geografiche e per tipologie di prodotto modello, mettere a punto protocolli di coltivazione ecosostenibili e a basso impatto ambientale. In particolare, per specie da fiore reciso (Lombardia) ed erbacee fiorite (Campania), la ricerca ha previsto:
- individuazione di aziende produttrici e selezione di campioni rappresentativi delle realtà produttive;
- indagine su tecniche colturali adottate e caratteristiche della produzione, attraverso questionario;
- in aziende opportunamente selezionate, approfondimento di specifici aspetti della produzione (i.e. riscaldamento in serra nelle specie da fiore reciso e in vaso, nutrizione idrica e minerale nelle piante erbacee fiorite), attraverso questionari sui “dati primari” relativi ai singoli input (energia, acqua, fertilizzanti);
- elaborazione dei dati acquisiti e individuazione dei punti critici del processo produttivo in termini di efficienza d’uso delle risorse ed impatto ambientale, con la metodologia del Life Cycle Assessment (LCA), e messa a punto di soluzioni correttive.
Per le piante erbacee fiorite, i risultati hanno evidenziato differenze anche marcate tra le aziende nelle emissioni generate, espresse in termini di contributo al riscaldamento globale (kg di CO2 equivalenti prodotti dai processi indagati). I valori di impatto più elevati sono riconducibili a produzione e consumo di carburante per il trasporto dei materiali utilizzati, sintesi industriale di fertilizzanti azotati ed emissioni di protossido di azoto (N2O) causate dall’applicazione degli stessi.
L’analisi della produzione delle piante in vaso ha evidenziato un uso eccessivo di fertilizzanti, con una forte variabilità tra le aziende. I substrati sono a base di torba e circa il 60% delle aziende utilizza la torba come unico substrato. Il riscaldamento delle serre è effettuato con caldaie a metano e GPL (65%), e a gasolio 25%; la restante percentuale delle aziende ha avviato l’uso di biomassa
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
Method for selecting ornamental species for different shading intensity in urban green spaces
Full text linkIn urban areas, ornamental plants face different constraints, such as the shading of buildings and trees. Therefore, the selection of suitable species and their integration or combination with pre-existing plants is very important. Trees, shrubs, and herbaceous plant species must be distributed according to plant light requirements and shading intensity. Ornamental plants are classified into two groups based on their light intensity or shade tolerance: sun and shade species. To properly position the plants, especially in the immediate vicinity of buildings, it is necessary to study the projection of shadows during the year and the most critical periods, such as July and August. The position of ornamental species with different shading tolerances can be obtained by characterizing the leaf gas exchange for each species. Among the physiological parameters, the most important is the light compensation point, which is the light intensity corresponding to a net photosynthesis equal to zero. This means that the assimilation of carbon dioxide through photosynthesis is equal to the carbon dioxide emitted by respiration. This steady state represents the most critical condition for plants to endure the summer. The distribution of species inside a green area should be determined by considering the minimum light intensity that allows sufficient photosynthesis to compensate for the respiration rate. In this context, non-destructive leaf gas exchange, chlorophyll a fluorescence, and chlorophyll content can be useful tools for selecting suitable ornamental plants under diverse shading conditions
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