1,721,197 research outputs found
Tratti, sessi e generi : un dialogo
No full textIl testo che segue è stato rinvenuto in Carìa, sulle sponde di un grande lago. A quanto pare i due dialoganti – Ermes e Afrodite – furono indotti ad approfondire la relazione tra tratti sessuali, sessi, e generi a seguito dell’incidente capitato al figlio Ermafrodito. Storici di chiara fama ritengono che il dialogo sia stato protetto dalle intemperie e tramandato fino a noi grazie alle cure (e al senso di colpa) di Salmacide
Alteration of aminoacid metabolism by humic substances during germination of Pinus laricio seeds
No full textThe results suggest that HS inhibit seed germination by affecting metabolic processes, in particular the krebses cycle that provides the carbon skeleton necessary to synthesize aminoacids
Federici Nora.— La mortalita differenziale dei due sessi e le sue possibili cause
No full textCailar A. Federici Nora.— La mortalita differenziale dei due sessi e le sue possibili cause. In: Population, 7ᵉ année, n°4, 1952. pp. 752-753
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
Biological Activity of soil organic matter mobilized by root exudates
No full textIn order to study the biological activity of soil organic matter mobilized by agrarian (Zea mays : cultivars Mytos and
Samantha) and forest (Picea abies Karst. and Pinus sylvestris L.) root exudates, two different soils, an Eutric Cambisol
(EC) and a Rendzic Leptosol (RL), were considered. Soil organic matter extracts were obtained by treating the soils
with water (control) or plant root exudates. The extracts were characterized by hormone-like activities and gas chromatographic/
mass spectrometric (GC/MS) measurements. Their effects on the nitrogen metabolism in maize seedlings
were evaluated. The nitrogen organification in the maize seedlings has been greatly stimulated by all the organic acid
extracts from the agrarian soil, while the extracts from the forest soil had no influence upon the metabolism; this indicated
a probable link between the plant and the environment. The different biological activities of the extracts are
discussed
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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