1,720,962 research outputs found
Correlación entre los hallazgos del ultrasonido doppler transvaginal y la flexografía pélvica en mujeres con signos clínicos de insuficiencia venosa pélvica atendidas por el servicio de cirugía vascular y angiología en el Hospital Militar central
No full textEl objetivo de este trabajo es realizar una correlación entre los hallazgos de la ecografía doppler transvaginal con los hallazgos de la flebografía pélvica, considerada mundialmente como el gold estándar en la evaluación de la anatomía venosa pélvica. Desde junio de 2008 hasta junio de 2009, se evaluaron 42 pacientes llevadas a flebografía pélvica con evaluación de los 4 ejes con el objetivo de revisar la correlación entre los hallazgos del dúplex transvaginal y la flebografía. 29 de nuestras pacientes fueron elegibles de acuerdo a la disponibilidad de los estudios de flebografía y dúplex transvaginal, para su correlación, así como el cumplimiento de los requisitos técnicos establecidos en la literatura y los protocolos del servicio, pero solo 12 de las pacientes fueron evaluadas de forma completa con flebografía de los 4 ejes para el análisis del estudio. Los datos obtenidos fueron evaluados mediante la base de datos en el programa SPSS 15, llevando a cabo un análisis de sensibilidad y especificidad para insuficiencia venosa pélvica, individualizado a cada eje y la posterior correlación mediante el coeficiente R de Pearson del tamaño de la vena gonadal medido por flebografía, con el tamaño de los lagos venoso medidos por ecografía. Se encontró una excelente sensibilidad del dúplex transvaginal para detectar la presencia de varicocele pélvico, sin embargo su capacidad para determinar el origen anatómico de las mismas fue considerablemente menor. Es necesario aumentar el número de muestra para evaluara una mayor cantidad de pacientes con síndromes de compresión que nos permita hacer una inferencia estadística del papel de la ecografía pélvica transvaginal en el diagnóstico de estos. Los pacientes que por dificultades anatómicas no puedan ser evaluados mediante flebografía de 4 ejes deberán ser evaluados con otro estudio anatómico que permita evaluar los resultados de la ecografía pélvica, antes de recomendar a esta última como un adecuado procedimiento de selección para llevar las pacientes a manejo intervencionist
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
Características de la madera plástica aprovechadas y proyectadas por el diseñador Industrial en nuevos productos
No full textMonografía (Diseño Industrial) Universidad Católica de Pereira. Facultad de Arquitectura y Diseño, Pereira, 2002Universidad Católica de Pereira; Asesores: Gabriel Flórez, Sandra Forero, Cesar Hernández y Luz Elena Franc
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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