1,720,991 research outputs found
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
Attività enzimatiche glicometaboliche in linfomonociti di soggetti obesi con e senza diabete di tipo II: correlazione col binding e con la sensibilità insulinica in vivo.
No full textB cell secretion and insulin sensitivity in hypertensive and normotensive obese subjects
No full textTo test the hypothesis that in obesity hypertension is associated with more pronounced hyperinsulinaemia and insulin resistance we compared plasma insulin levels and insulin sensitivity in a group of 6 obese subjects with untreated hypertension and in a group of 6 obese subjects with normal blood pressure. The two groups were similar for sex, age, body mass index and glucose tolerance. Six nonobese subjects served as controls. The study consisted of a 2-h hyperglycaemic clamp (steady-state plasma glucose = 11 mmol/l) and a 15-min insulin tolerance test (0.1 U/kg body wt). During hyperglycaemic clamp, insulin and C-peptide plasma levels were similar in normotensive and hypertensive obese subjects: the area under the plasma insulin curve was 36,000 +/- 3000 pmol/l X 120 min in the former and 34,000 +/- 1000 pmol/l X 120 min in the latter; the area under the plasma C-peptide curve was 298,000 +/- 26,000 pmol/l X 120 min in the former and 246,000 +/- 26,000 pmol/l X 120 min in the latter (P = n.s.). The ratio M/I between the amount of glucose metabolized (M) and the mean plasma insulin levels (I) during hyperglycaemic clamp was similar in the two groups: 0.59 +/- 0.09 in normotensive and 0.58 +/- 0.08 mg/min X m2 per pmol/l in hypertensive obese subjects (P = n.s.). Also the rate coefficient of glucose disappearance from plasma (K(itt)) after i.v. insulin injection was similar in the two groups (4.08 +/- 0.51 vs. 3.87 +/- 0.53 per cent/min).(ABSTRACT TRUNCATED AT 250 WORDS
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
Mononuclear leukocytes from obese patients with type II diabetes have reduced activity of hexokinase, 6-phosphofructokinase, and glucose-6-phosphate dehydrogenase.
No full textc-Sisma 3.1 vers. PRO
No full textc-Sisma 3.0 è una procedura che consente di automatizzare il calcolo dei coefficienti di
attivazione legati a singoli cinematismi elementari di macroelementi (generalmente pareti o limitati
assemblaggi) individuabili negli edifici in muratura1 2.
Nella fattispecie, la versione PRO di c-Sisma 3.0 comprende l’analisi di 20 meccanismi fuori
piano per strisce verticali.
È possibile scegliere i meccanismi voluti e procedere al calcolo dei coefficienti di attivazione;
il programma restituisce il calcolo di c = a/g (moltiplicatore delle masse inerziali che attiva il
meccanismo considerato) per ciascun cinematismo ed individua il valore minimo, relativo al
meccanismo più debole. Il programma svolge inoltre le verifiche di sicurezza prescritte dalla
vigente normativa3.
La procedura compendia le proposte disponibili in letteratura di ricercatori e studiosi
particolarmente attenti verso i problemi legati alla conservazione di complessi ed agglomerati
storici, spesso collocati in zone ad elevato rischio sismico, sul tema della vulnerabilità sismica degli
edifici esistenti. Questi, infatti, spesso non rispondono a caratteristiche costruttive imputabili
generalmente ad edifici di nuova fattura (comportamento “scatolare”, garantito da adeguato
ammorsamento tra pareti e tra queste ed orizzontamenti, sufficiente rigidezza degli impalcati,
monoliticità delle pareti, ecc.), per i quali sono utilizzabili specifici algoritmi di calcolo, ma
richiedono adeguati strumenti di modellazione, capaci di considerare meccanismi di collasso
anticipati (basati generalmente sulla perdita di equilibrio di porzioni murarie rigide) rispetto a
comportamenti che richiamano gli stati di sforzo e deformazione interna dei materiali
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