1,721,083 research outputs found
Fonti inedite e studi tassonomico/nomenclaturali: il caso delle raccolte di Roberto de Visiani
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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
Unipolar Mania: Prevalence and Patient Characteristics
No full textObjectives: Recurrent [hypo]mania without major depressive episodes (“unipolar mania” [UPM]) is an uncommon form of major affective disorder related to bipolar disorder (BD). We characterized UPM patients and estimated the prevalence of their characteristics based on prolonged times-at-risk. Methods: Using standard bivariate and multivariate statistics, we compared the characteristics of 63 consecutive UPM patients to 1210 other BD patients over prolonged, close, prospective follow-up at expert mood disorder centers. Results: UPM was uncommon (4.95% of 1273 BD cases during 18.2 years at risk) with a 2.5-fold excess of men and 93.4% considered type I BD. UPM cases had earlier initial clinical interventions than other BD patients, more psychotic features with first episodes, and fewer UPM patients were married but did not have fewer children and were more unemployed. UPM cases experienced more morbidity (episodes and hospitalizations/year and %-time ill) than other BD patients and made more follow-up clinic visits/year. They were less likely to be suicidal and had less general medical comorbidity but did not differ in substance abuse. They had lower ratings of depressive symptoms, used mood stabilizers more, and as expected, received antidepressants 27 times less than other BD patients. Observed rates of UPM declined with longer observation times. Conclusions: UPM was uncommon (4.95% of BD cases; 0.31% with hypomania only). Compared to ordinary BD, UPM had significantly greater morbidity and unemployment but a lower risk of suicidal behavior or general medical disorders associated with bipolar depression. This unusual disorder needs greater recognition, clarification of its nosological status, and efforts to optimize its treatment
Seesaw longitudinal–transverse drainage patterns driven by Middle and Late Pleistocene climate cycles in the foreland basin of the south-eastern European Alps
No full textThe multi-proxy sediment provenance analysis of two sedimentary successions (GER1 core, 130 m long, and CB core, 103 m long) provides new data for detecting the temporal and spatial variations in fluvial drainage patterns and landscape evolution of the Venetian Plain (NE Italy) in relation to Middle–Late Pleistocene climate fluctuations. Detailed petrographic analyses, compared to present-day river signatures, highlight compositional variations of the sediments, providing crucial information for detecting the depositional histories of the two sites, which lie about 15 km apart, and considering a source-to-sink multi-source context. The successions span from a cold phase older than MIS 9/11 to MIS 1, and are chronostratigraphically well correlated from the MIS 7.3 marine transgression. Despite belonging to the same alluvial system since the Last Glacial Maximum, the GER1 and CB cores show different depositional histories during previous Marine Isotopic Stages, starting at least from MIS 8 (i.e., ca 300–250 ka). A glacial interval older than MIS 9/11, is encountered only within records of the GER1 core. Due to its composition and the particularly coarse grain size, it represents a key element for detecting the depositional dynamics of megafans during past climate oscillations. Conversely, the presence of sediments not fully ascribable to any of the present-day catchment suggests the existence of a trunk paleo-river, longitudinal to the foreland axis, flowing from west to east along the Po Plain and occasionally draining the Venetian Plain. A causal relationship between prograding mechanisms of transverse alluvial megafans and Pleistocene climate variations is detected, taking into account responses of local alluvial systems to glaciers' development, sediment yield from the orogenic hinterland, and sea-level lowstands and highstands. A focus on glacial termination phases allows identification of two additional incised valleys, established at the end of the pre-MIS 9/11 glaciation and of MIS 6
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
The functional connectivity of the right superior temporal gyrus is associated with psychological risk and resilience factors for suicidality
Full text linkIntroduction: Suicide attempters show increased activation in the right superior temporal gyrus (rSTG). Here, we investigated the rSTG functional connectivity (FC) to identify a functional network involved in suicidality and its associations with psychological suicidality risk and resilience factors. Methods: The resting state functional magnetic resonance imaging data of 151 healthy individuals from the Human Connectome Project Young Adult database were used to explore the FC of the rSTG with itself and with the rest of the brain. The correlation between the rSTG FC and loneliness and purpose in life scores was assessed with the NIH Toolbox. The effect of sex was also investigated. Results: The rSTG had a positive FC with bilateral cortical and subcortical regions, including frontal, temporal, parietal, occipital, limbic, and cerebellar regions, and a negative FC with the medulla oblongata. The FC of the rSTG with itself and with the left central operculum were associated with loneliness scores. The within rSTG FC was also negatively correlated with purpose in life scores, although at a trend level. We did not find any effect of sex on FC and its associations with psychological factors. Limitations: The cross-sectional design, the limited age range, and the lack of measures of suicidality limit the generalizability of our findings. Conclusions: The rSTG functional network is associated with loneliness and purpose in life. Together with the existing literature on suicide, this supports the idea that the neural activity of rSTG may contribute to suicidality by modulating risk and resilience factors associated with suicidality
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