1,720,967 research outputs found
ANALISI EEG BISPETTRALE COME TARGET DELLA IPNOSI DURANTE ANESTESIA GENERALE IN CARDIOCHIRURGIA.
No full textDetection of minimal hepatic encephalopathy: Normalization and optimization of the Psychometric Hepatic Encephalopathy Score. A neuropsychological and quantified EEG study
No full textBackground/Aims: Psychometric Hepatic Encephalopathy Score (PHES) and EEG are used to detect minimal hepatic
encephalopathy (MHE). We aimed at standardizing PHES in Italy and comparing Italian, German and Spanish norms in
EEG characterized cirrhotic patients.
Methods:PHES was standardized on 228 normal individuals. Repeatability was studied in 128 individuals. One hundred
patients with liver cirrhosis underwent EEG and PHES which was computed on the Spanish, German and the Italian norms.
Results:Age and education levels were predictors of psychometric tests; therefore, adjusted Z scores were calculated.
Practice effect (p < 0.01) was detected. In the patients, the Italian norms were closer to the Spanish norms (difference
!0.14 ± 1.32, p = 0.29) than to the Germans ones (difference 1.97 ± 2.07, p < 0.001). The PHES calculated on the Italian
norms was correlated with the EEG mean dominant frequency more closely than the ones calculated on the German and
Spanish norms (r = 0.38, r = 0.31, r = 0.33, respectively – p < 0.01). The detection of MHE on the basis of PHES and
EEG showed limited agreement (73%, Cohen’s K = 0.32).
Conclusions: (i) Valid norms for PHES were produced, (ii) clues for the use of common norms in Latin Countries were
found, (iii) different findings between PHES and EEG possibly reflect various features of MHE
Italian revised memory and behavior problems checklist (It-RMBPC): validation and psychometric properties in Alzheimer’s disease caregivers
No full textBehavioral and psychiatric symptoms (BPSD), common in persons with Alzheimer’s disease (AD), are known to be associated with caregiver burdening. Therefore, early recognition of BPSD is necessary to protect these caregivers. The aim of this validation study was to test the internal consistency, test–retest reliability and concurrent validity of an Italian translation of the revised memory and behavior problems checklist (RMBPC), as it demonstrated high plasticity in timely measuring the day-to-day BPSD changes that challenge caregivers. A cohort of 355 dyads composed of AD subjects and their principal caregivers were assessed with the Italian version of RMPBC capitalizing on the information provided by the latter ones. The results were compared with the ones from other predictors (i.e., the Zarit Burben Interview, the Hospital Anxiety and Depression Scale, the EurQuality of Life, the neuropsychiatric symptoms). The validity and stability of the It-RMBPC resulted being solid and concurrent reliability resulted having higher correlations with principal caregiver anxiety level. Future studies on the role of BPSD in fostering anxiety in AD principal caregivers are merited
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
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