1,721,109 research outputs found
CASE STUDIES AND APPLICATIVE RESEARCHES CONCERNING THE UNCERTAINTY OF THE CONTROL CHARACTERISTIC FOR CONTROL MEANS
No full textCASE STUDIES CONCERNING THE BAD INFLUENCE OF THE LIMIT MEASUREMENT ERROR ON CONTROL OBJECTIVITY
No full textUtilizzo di un protocollo diagnostico per i disturbi della spettro autistico (DSA): esperienza del Centro Universitario per l'Autismo di Bologna
No full text
A diagnostic protocol for autism: an Italian experience
Full text linkBackground and aims: The usefulness of a protocol for aetiologic diagnosis in pervasive developmental disorders (PDD) has been considered in literature and the results are heterogeneous. We addressed this topic, evaluating an Italian sample of patients with PDD.
Material and methods: We included in the study the patients referred to the Autism Centre of the University of Bologna from January 1999 to September 2009, affected by PDD according to DSM-IV-TR. All the subjects underwent anamnesis, clinical, laboratory and instrumental investigations for an aetiological diagnosis. First, we evaluated neurobiological findings in the whole sample. After, we divided the patients into two groups, respectively syndromal (with genetic or metabolic syndromes, cerebral lesions and/or microcrania/macrocrania) and nonsyndromal (without genetic, metabolic diseases, cerebral lesions and/or microcrania/macrocrania), that we compared each other for several
variables.
Results: We selected 90 subjects (mean age 11 years 1 month, range 2-36 years, mean follow-up 3 years 8 months), respectively with autistic disorder (55.5%), pervasive developmental disorder not otherwise specified (38.9%), Asperger disorder (4.4%), Rett disorder (1.1%). Male-to-female ratio was 3:1. Organic pre-, peri-, and postnatal antecedents were found in 27.8% of subjects. Neurological signs were present in 83.3%; brain imaging showed pathological findings in 33.3%. Genetic examinations disclosed abnormal karyotype in 7.8%, one patient had the Cowden syndrome, one the Rett disorder variant CDKL5, one the Wilson-Turner syndrome. The syndromal group consisted of 42 subjects (46.7%), the non-syndromal one of 48 patients (53.3%). Dysmorphisms prevailed significantly in the syndromal cases (30.9%), but they were present also in 10.4% of the non-syndromal ones. Severe/profound mental retardation recurred more often in syndromal cases respect to non-syndromal ones (42.9% vs 29.2%), but the difference was not significant. We found epilepsy in 30.0% of the whole sample without a significant group difference.
Conclusion: The identification of specific pathologies underlying PDD could help to provide a medical therapy in tractable conditions, and to give a genetic counselling. In our sample genetic examinations, MRI and EEG recordings had the best diagnostic yield, while metabolic tests and other examinations were negative or mildly altered. Diagnostic evaluation should be performed choosing the examinations based on clinical suspicion with minimal resources and patient discomfort and with the best diagnostic yield
Protocollo diagnostico per i disturbi pervasivi dello sviluppo del Centro per l’autismo di Bologna.
No full textUn protocollo diagnostico per i disturbi dello spettro autistico (DSA): l'esperienza del centro universitario per l'autismo di Bologna
No full textGoing 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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