1,721,066 research outputs found

    Excel & Statistica Medica. Guida pratica per le professioni Sanitarie.

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    L’idea di questo testo nasce dall’esigenza di fornire agli studenti delle Lauree Sanitarie una guida pratica da seguire per poter concretizzare i principali metodi di analisi statistica utilizzando un programma diffuso quale Microsoft Excel. In campo sanitario si è spesso portati a pensare all’utilità di ricerche metodologicamente corrette per verificare l’efficacia di nuove terapie o protocolli di cura considerando la fase di costruzione della matrice dati quale aspetto fondamentale per l’avvio della ricerca stessa. Excel con la sua interfaccia user friendly, fornisce una vasta gamma di strumenti che permettono allo studente di costruire uno “spazio” elettronico per l’inserimento, l’archiviazione e l’analisi descrittiva ed inferenziale dei dati senza doversi avvalere di un particolare software statistico il quale viene normalmente implementato per chi possiede competenze statistiche specifiche. Lo scritto e gli esempi forniti rappresentano la raccolta di esperienze didattiche e tutoriali maturate negli anni, in diversi corsi di laurea triennale, specialistica e master universitari. Il testo è indicato come guida pratica all’utilizzo del foglio elettronico e non come sostituto di qualsiasi guida operativa del programma di Excel. Le istruzioni fornite si basano su diverse versioni di Excel, dalla 2003 alla 2010, con Sistema operativo Windows 7 e XP Professional

    Effects of the ketogenic diet on nutritional status, resting energy expenditure, and substrate oxidation in patients with medically refractory epilepsy: A 6-month prospective observational study

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    This 6-month prospective, single-arm observational study was designed to assess the effects of the KD on the nutritional status, resting energy expenditure (REE), and substrate oxidation in patients with drug-resistant epilepsy. Eighteen patients with medically refractory epilepsy underwent assessment of body composition, REE, and substrate oxidation rates before and after 6 months of KD. Compared with baseline, there were no statistically significant differences at 6 months in terms of height, weight, BMI z-scores, and REE. However, the respiratory quotient decreased significantly (from 0.800.06 to 0.720.05, p<0.001) whereas fat oxidationwas significantly increased (from50.925.2 mg/ min to 97.525.7 mg/min, p<0.001). Interestingly,we found that the increase in fat oxidationwas the main independent predictor of the reduction in seizure frequency (beta1⁄40.97, t1⁄46.3, p < 0.05). Administering a KD for 6 months in patients with medically refractory epilepsy increases fat oxidation and decreases the respiratory quotient, without appreciable changes in REE

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

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    “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
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