1,721,825 research outputs found
Few comments on: "musculoskeletal applications of elastography: a pictorial essay of our initial experience" : RE
Full text linkauthor reply 25
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
Test da campo per la valutazione degli sport da combattimento
No full textLo scopo di questo lavoro è quello di analizzare le capacità condizionali prevalenti negli sport da combattimento e di mettere in luce i principali test da campo che si possono effettuare in queste discipline.
Diversi studi mettono in evidenza come la rapidità e la forza esplosiva sia degli arti superiori che degli arti inferiori (solitamente determinata con squat jump e counter movement jump) siano determinanti ai fini della prestazione in discipline quali lotta greco romana, scherma, kick boxing, taekwondo, judo e karate. In quest’ultima disciplina, Ad esempio questi test hanno portato a dimostrare che la componente di forza elastica sia più importante nel kumite rispetto al kata (Scurati, Invernizzi et al. 2005). Per determinare il profilo dei substrati energetici sono stati condotti anche test sulla resistenza, tramite valutazioni di frequenza cardiaca, consumo di ossigeno e lattato. Sempre nel karate, ad esempio, si è determinato un bilanciamento tra substrati aerobico e anaerobico nel kata, e sbilanciati a favore dell’aerobico nel kumite (Doria, Veicsteinas et al. 2009).
I test da campo si possono basare su semplici misurazioni, sulla frequenza cardiaca e sul lattato. Alcuni esempi:
• Special Physical Fitness Test di Sterkowicz (1997) basato sul tempo di esecuzione di speciali azioni (calci, pugni, rotazione delle anche, azioni di evasione, piegamenti sulle braccia).
• Indice di efficacia tecnica: comparazione tra ampiezza e velocità di esecuzione dell’azione (Scurati, Invernizzi et al. 2007).
• Special Judo Fitness Test di Sterkowicz (1997) basato sulla frequenza cardiaca alla fine e ad un minuto dal termine di un test navetta combinati con il numero di tecniche eseguite durante il test.
• Test di rapidità basato sulla produzione di lattato in un determinato tempo e il numero delle tecniche eseguite durante il test.
• Scala di Borg per la percezione dello sforzo.
References
Doria C, Veicsteisas A, Limonta E, Maggioni MA, Aschieri P, Eusebi F, Fanò G, Pietrangelo T. Energetics of karate (kata and kumite techniques) in top-level athletes. Eur J Appl Physiol (2009) 107:603-610.
Scurati R, Invernizzi PL, Michielon G, Roione GC, Petruccioli MG. Kàrate deportivo : anàlisis de la fuerza explosiva de los miembros inferiores en atletas profesionales italianos. In: Deporte y ciencia : la busqueda del rendimiento (2005) 220-222.
Scurati R, Michielon G, Longo S, Invernizzi PL. Evaluating an index of technical effectiveness (I.E.T.) in karate : a pilot study. International ACAPS Conference Movement and sport sciences around the world (2007)
Monitoraggio Corte EDU marzo 2016
No full textRassegna delle principali sentenze pronunciate dalla Corte EDU nel mese di marzo 2016 in materia penale e processuale penal
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
- …
