1,721,051 research outputs found
Holm Oak (Quercus ilex L.) decline in Apulia, Southern Italy, a phytopathological overview.
No full textLucchese P.G., Chiaromonte E., Salamone D., Tarasco E., Pollastro S., Faretra F., Nigro F., 2025 – Holm Oak (Quercus ilex L.) decline in Apulia, Southern Italy, a phytopathological overview. 17th International Congress of Mediterranean Phytopathological Union (MPU). CIHEAM Bari, Italy, July 6-10 202
Il cancro del fusto minaccia il melograno italiano
No full textDiversi impianti di melograno stanno morendo a causa del fungo Coniella granati, patogeno per il quale è lecito attendersi una rapida diffusione
Fungicide resistance in Botrytis cinerea: updates on resistance mechanisms and management
No full textResistance to fungicides is an evolutionary process resulting from the selection of advantageous genotypes in naturally diverse populations. Up to nine fungicide modes of action are authorized to control grey mould caused by Botrytis cinerea, according to the crop and the country. Out of them, six have encountered specific resistance, with variable frequencies in populations and possible consequences for field fungicide efficacy. Moreover, multidrug resistance (MDR) is caused by fungicide efflux and allows a weak resistance towards eight unrelated modes of action. Here, a review is given of the fungicide resistance status of B. cinerea, via the examples of French and Italian vineyards and some other crops. Recently developed resistance and recent findings concerning the associated resistance mechanisms are focused upon, and more particularly on fenhexamid, SDHI and multidrug resistance. The importance of properly quantifying resistance costs will be stressed, as well as the impact of fungicides on population structure. Finally, anti-resistance strategies will be presented and examples of managed resistance will be discussed in a more general manner, with the aim of extending this knowledge to other crops and countries undergoing similar resistance problems
Le viti native americane e asiatiche. Ibridi portinnesti e varietali.
No full textLe viti americane e asiatiche. Ibridi portinnesti e varietali
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
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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