1,721,081 research outputs found
13 - Modeling the post-LGM deglaciation of the Scandinavian-Barents Sea Ice Sheet: a model intercomparison approachM. Petrini, N. Kirchner, F. Colleoni, A. Camerlenghi, M. Rebesco, R.G. Lucchi, R. Noormets, E. Forte, R.R. Colucci
No full textARCA Project - Final Conference, 11 October 2016 Rome - Poster Session - Marine Geology - Extended abstract(M. Petrini, N. Kirchner, F. Colleoni, A. Camerlenghi, M. Rebesco, R.G. Lucchi, R. Noormets, E. Forte, R.R. Colucci)</div
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
Adenosine A1 receptor-mediated inhibition of evoked glutamate release is coupled to calcium influx decrease in goldfish brain synaptosomes.
No full textNeuroscienze
No full textSia che si osservi attraverso una visione molecolare, cellulare, sistematica, comportamentale, o cognitiva, il sistema nervoso dell’uomo è uno splendido capolavoro di macchinario biologico. Partendo da presupposti, come per esempio, i manufatti della cultura umana, esistono ottime ragioni per voler comprender come l’encefalo e il resto del sistema nervoso funziona. Gli effetti debilitanti ed economici delle malattie neurologiche e psichiatriche spingono ulteriormente la necessità di trovare risposte a queste domande. Lo scopo di questo libro è quello di mettere in risalto le sfide intellettuali e l’eccitazione, ma anche l’incertezza, di quella cosa che da molti viene considerata l’ultima grande frontiera delle scienze biologiche.. Gli argomenti trattati nel testo dovrebbero servire come base di partenza per gli studenti di Medicina e per gli specializzati in neuroscienze, e tutti gli altri che vogliono capire come funziona il sistema nervoso nell’uomo. Come tutte le grandi sfide, le neuroscienze dovrebbero essere considerate, e lo sono, un insieme di discussioni. Tutti questi ingredienti sono stai usati per scrivere la quarta edizione di questo libro, noi speriamo che tutto ciò venga trasmesso in egual misura ai lettori di qualsivoglia livello
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
A new Arctic seepage site? Preliminary evidence from benthic community.
Full text linkThe Kveithola Trough is an abrupt and narrow sedimentary system located in the NW Barents Sea. The hydrographic,
bio-geochemical conditions and the possible existence of gas seepage activity of the area have been
investigated during the Eurofleets 2- BURSTER cruise, conducted on board the German icebreaker RV Polarstern.
The aim of our work is to characterize the benthic biota and more specifically the macrofaunal community
structure coupled to the study of benthic foraminiferal meiofauna.
Preliminary qualitative results revealed that in the inner Kveithola Trough, the macrofaunal community is
composed by abundant black worm tubes (Chaetopteridae worms and Siboglinidae-like taxa) with presence of
Thyasiridae bivalve species. The occurrence of these macrofaunal taxa is usually associated to oxygen-reduced
environments, hydrothermal vents and cold seeps. The living benthic foraminiferal assemblage in the same
stations is characterized by the presence of typically oxygen-depleted environmental taxa including the calcareous
species Nonionellina labradorica and Globobulimina spp.. Conversely, in the outer Kveithola trough, both benthic
macrofauna and foraminiferal meiofauna assemblages are characterized by less opportunistic taxa with a higher
biodiversity suggesting very distinct oceanographic sea bottom conditions.
The organic matter richness plays a large role in the Kveithola Trough environmental setting and may bring
anoxic conditions that could affect the biota of the area. In fact, the benthic community structure of this area
inhabits suboxic, anoxic and organic-enriched sediments and disturbed environments, forming assemblages with
low diversity and high abundances of a few tolerant and/or specialized species.
This preliminary finding could be consistent with other studies examining benthic community structure around
Svalbard and in particular cold seep and vents habitats where faunal characteristics are patchy, suggesting
small-scale heterogeneity in the environment surrounding cold seeps. For said reasons we envisage the presence
of a new Arctic seepage site having a strong local impact on the benthic system
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