1,720,996 research outputs found
La regolazione delle autorità in materia di soggetti finanziari fra concorrenza e sovrapposizioni
No full textGli A. muovono dai modelli di delegificazione dei dd.lgs. 1 settembre 1993 n. 385 e 24 febbraio 1998 n. 58 relativamente alla disciplina di banche, intermediari finanziari, s.i.m., s.g.r. e s.i.c.a.v. e ne verificano l'attuazione da parte di Cicr, Ministro dell'Economia e delle Finanze, Banca d'Italia e Consob. La finalità è l'analisi dei criteri di riparto delle competenze tra autorità, la comprensione delle ragioni e l'individuazione delle aree di possibile sovrapposizione o conflitto
The influence of principal component analysis on the spatial structure of a multispectral dataset
No full textMultispectral remote sensing images often have extensive interband correlation. As a result, the images may contain similar information and have similar spatial structure. Principal component analysis (PCA) is a technique for removing or reducing the duplication or redundancy in multispectral images and for compressing all of the information that is contained in an original n-channel set of multispectral images into less than n channels or, more specifically, to their principal components. These are then used instead of the original data for image analysis and interpretation. The principal components are ranked in terms of the amount of variance that they explain. A consequence of ranking in this way is that the resulting principal components show a markedly different spatial structure from one another. This effect can be problematical, for example, when studying landscape ecology, where understanding the interactions between elements of the landscape structure as manifest in remote sensing images and environmental processes is of primary importance. Although the difference in spatial structure of an image after applying PCA and its influence on potential applications have been known for some time, it does not appear to have been studied explicitly. Accordingly, the aim of this paper was to examine the implications of applying PCA for the spatial structure and content of multispectral remote sensing images using parts of a Landsat Thematic Mapper (TM) frame of northern Sardinia, Italy. The results show that, due to the significant influence of PCA on the spatial structure and content of remote sensing images, the resulting principal components have a spatial structure and content that differ markedly from one another and from the original images. As a result, extreme care is necessary when applying PCA to remote sensing images and interpreting the results
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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