1,720,958 research outputs found
Preliminary observations about genotype-training system interaction on cv sauvignon Blanc: Evolution of phenolic and aromatic fractions during maturation
No full textIn order to further typify cv Sauvignon grown in the wine-producing areas of greatest interest in Friuli region (North-eastern Italy), three clonal families, cultivated following two training systems (Guyot and Spurred Cordon), were examined and during the last stages of the vegetative season various analytical parameters were determined. The results of the experiments prove the considerable influence of environment and training system on the expression of grape composition and viticultural features in the various clones
Relationship between genotype and phenolic and aromatic fractions in cv chardonnay at grape harvest. First results
No full textIn order to test possible relationship between genotype and aromatic and phenolic fractions, and than different enological attitudes, four clonal families were considered. At harvest a series of investigations of must composition and grape composition was carried out. In the present experimental work a remarkable difference among clonal families can be noted about some parameters not conventionally considered but however very important for their enological utilisation
Diversità clonale e caratterizzazione aromatica nella cv. Chardonnay in Friuli. Primi risultatI
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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
The importance of the "viticulture model" on the aromatic properties of cv sauvignon blanc
No full textThe paper presents the results from two years' of research conducted in Friuli-Venezia Giulia (North-East of Italy) concerning the influence of various parameters in the viticulture model (clone, training system, bud load) on the expression of aromatic characteristics in cv. Sauvignon Blanc. During the last stage of the vegetative cycle, from veraison to maturation, both the main vegeto-productive parameters (number of buds, middle weight of bunch, middle weight of plant, number of grapes per plant, weight of pruned wood, Ravaz index and diameter of berry) and the most important aromatic components (terpene fraction, isobuthylmethoxypyrazine and total glycosides), which are characteristics for the variety, were investigated. In general terms, there was a significant effect of the factor "training system" on both the level of isobuthylmethoxypyrazine and the total glycoside aromas, while the importance of the other parameters, namely the "genotype" and the "bud load per plant" were definitely lower. These results allow the design of a viticulture system suitable for the desired enological objectives
Influence of genotype on the methoxypyrazines content of cabernet sauvignon cultivated in friuli
No full textIn order to test the importance of the "genotype" factor on the expression of aromatic characteristics in Cabernet Sauvignon, 12 clonal selections of the variety, of which 9 were French selections (15, 188, 190, 335, 336, 337, 338, 340, 341) and 3 Italian (R5, R7, R10), were examined. The vines were cultivated on a gravely soil in the "Friuli Grave" AVA zone (Friuli-Venezia Giulia). During the vegetative season, the main vine vegeto-productive parameters (number of buds, middle weight of bunch, middle weight of plant, number of grapes per plant, weight of pruned wood, Ravaz index and diameter of berry) were investigated, as was the methoxypyrazine content, which is a notorious characteristic of the variety responsible for the vegetable aromas of the wine. The analysis of the above factors clearly distinguished the behaviour of the Italian selection R5, which had a different accumulation of sugars and acidity level in comparison with all the other clonal families. It was also confirmed that the genotype has an effect on the methoxypyrazine content at maturation
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
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