1,720,975 research outputs found
Seasonal variations of spatial behaviour in female Alpine ibex (Capra ibex ibex) in relation to climatic conditions and age
No full textThe spatial behaviour of female Alpine ibex Capra ibex ibex L. 1758, was analysed in Gran Paradiso National Park (Italy). Data were collected on 14 radio- collared females from September 2000 to August 2002, using radio-tracking and direct observations. Seasonal spatial behaviour was influenced by environmental conditions, in particular climatic factors. In the presence of thick snow cover, females significantly reduced winter home range sizes. Snow cover limited ibex mobility and reduced localization altitudes. Annual home range and winter home range sizes were inversely related to age. Temperature modified the use of space by females during summer. During the hottest summer females moved over larger ranges at higher altitudes. Annual home range sizes (mean 186.2 ha ± 71.7 in 2000 and 182.2 ha ± 70.0 in 2001) and seasonal home range sizes were significantly smaller than those of reintroduced populations, moreover they were smaller that those of males calculated in a close study area in Gran Paradiso National Park
Seasonal variations of spatial behaviour in female Alpine ibex (Capra ibex ibex) in relation to climatic conditions and age
No full textGoing 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
Habitat selection in adult male of Alpine ibex, Capra ibex ibex
No full textHabitat use and selection of 14 Alpine ibex males were studied in the Gran Paradiso National Park. Alpine meadows were always overused and positively selected, because this habitat constituted an important food resource for the ibex. Even if rocks (30%) and stone ravines (22%) were the most frequented habitats in the study area, their use was lower than their availability because they offered few trophic resources. Pastures were used only in spring when the ibexes were looking for those sites just free from snow and with fresh vegetation. Stone ravines, where the ibexes rested in the hottest days, were most used in summer. Rocks were most used in winter: rock-faces are the only sites where the risk of avalanches is low and where it is still possible to find snow-free patches. Larch woods were especially used in winter and spring when it was still possible to find snow-free patches. The home range sizes proved to be influenced by the amount of Alpine meadows and rocks
Habitat selection in adult male of Alpine ibex, Capra ibex ibex
No full textHabitat use and selection of 14 Alpine ibex males were studied in the Gran Paradiso National Park. Alpine meadows were always overused and positively selected, because this habitat constituted an important food resource for the ibex. Even if rocks (30%) and stone ravines (22%) were the most frequented habitats in the study area, their use was lower than their availability because they offered few trophic resources. Pastures were used only in spring when the ibexes were looking for those sites just free from snow and with fresh vegetation. Stone ravines, where the ibexes rested in the hottest days, were most used in summer. Rocks were most used in winter: rock-faces are the only sites where the risk of avalanches is low and where it is still possible to find snow-free patches. Larch woods were especially used in winter and spring when it was still possible to find snow-free patches. The home range sizes proved to be influenced by the amount of Alpine meadows and rocks
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
Che suono avevano gli strumenti musicali degli antichi? Un progetto di ricerca e valorizzazione per lo strumento a fiato di età romana del Museo civico di Belriguardo
No full textLo studio riguarda lo strumento musicale a fiato ritrovato, alla metà degli anni Ottanta, nello scavo di Voghenza, che ha riportato alla luce una necropoli con recinti ed epigrafi, risalenti ai primi secoli dell’Impero, e parte del centro abitato. I materiali dello scavo, compreso lo strumento musicale, è attualmente conservato al Civico museo di Belriguardo (Voghiera, Ferrara). Nel 2019, in collaborazione con il Museo archeologico nazionale di Ferrara, Fede Berti, direttrice allora dello scavo archeologico e destinataria della Festschrift, ha caldeggiato la ripresa degli studi per la valorizzazione dello strumento musicale, di cui si dà conto in queste pagine. Qui si presenta l'aggiornamento sullo stato della ricerca, verso due prospettive: una lessicale, l'altra di ricreazione del suono. Da un lato, si approfondisce l’associazione del nome ad un certo strumento musicale ormai scomparso e, dall’altro, si descrivono i procedimenti metodologici per la restituzione del suono prodotto da uno strumento musicale non più in uso da secoli.
Si tratta del primo studio inter- e multidisciplinare sullo strumento, e pertanto può costituire un modello metodologico rilevante per studi futuri sia sul medesimo oggetto, sia su altri reperti sonori.
Attraverso le moderne tecnologie di ripresa e di ricreazione di copie in 3D e la sonorizzazione virtuale, lo strumento potrà avere una nuova visibilità all’interno del museo dove è attualmente conservato. Un nuovo allestimento della teca è già previsto, proprio sulla base di questo studio.
Il ruolo dell’autrice comprende l’ideazione del contributo, il coordinamento delle sezioni curate dai vari componenti del gruppo di studio, la stesura della sua parte
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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