1,720,964 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Disfunción endotelial asociada a la diabetes mellitus: interacción entre inflamación e hiperglucemia
Get PDFTesis doctoral inédita leída en la Universidad Autónoma de Madrid. Facultad de Medicina, Departamento de Farmacología y Terapéutica. Fecha de lectura: 12 de Julio de 2012
ASOCIACIÓN DE LA CONSULTA OFTALMOLÓGICA EN PACIENTES CON DIABETES MELLITUS TIPO II Y RETINOPATÍA DIABÉTICA
Get PDFType 2 diabetes mellitus (T2DM) is a disease that affects millions of people in the world every day and is considered a silent pathology since the majority of patients begin to present symptoms once damage has been established. cellular level in various tissues. One of the main complications of DM2 is diabetic retinopathy. Therefore, the objective of the study is to establish the relationship between the time of evolution of DM2 and the degrees of diabetic retinopathy. For this, a non-probabilistic sampling study was carried out on 58 patients with DM2. The results showed that there is a significant relationship between the time of evolution of DM2 and the degrees of retinopathy, so we conclude that early detection of the disease, as well as timely ophthalmological follow-up is key to saving the patient's health.La diabetes mellitus tipo 2 (DM2) es una enfermedad que cada día afecta a millones de personas en el mundo, y es considerada una patología es silenciosa ya que la mayoría de los pacientes comienzan a presentar síntomas una vez que se ha instaurado un daño a nivel celular en diversos tejidos. Una de las principales complicaciones de la DM2 es la retinopatía diabética. Por lo tanto, el objetivo del estudio es establecer la relación entre el tiempo de evolución de la DM2 con los grados de retinopatía diabética. Para esto, se realizó un estudio por muestreo no probabilístico a 58 pacientes con DM2. Los resultados mostraron que existe una relación significativa entre el tiempo de evolución de la DM2 y los grados de retinopatía, por lo que concluimos que una detección temprana de la enfermedad, así como un seguimiento oftalmológico oportuno es clave para salvaguardar la salud del paciente
Asociación de la consulta oftalmológica en pacientes con diabetes mellitus tipo II y retinopatía diabética
No full textLa diabetes mellitus tipo 2 (DM2) es una enfermedad que cada día afecta a millones de personas en el mundo, y es considerada una patología es silenciosa ya que la mayoría de los pacientes comienzan a presentar síntomas una vez que se ha instaurado un daño a nivel celular en diversos tejidos. Una de las principales complicaciones de la DM2 es la retinopatía diabética. Por lo tanto, el objetivo del estudio es establecer la relación entre el tiempo de evolución de la DM2 con los grados de retinopatía diabética. Para esto, se realizó un estudio por muestreo no probabilístico a 58 pacientes con DM2. Los resultados mostraron que existe una relación significativa entre el tiempo de evolución de la DM2 y los grados de retinopatía, por lo que concluimos que una detección temprana de la enfermedad, así como un seguimiento oftalmológico oportuno es clave para salvaguardar la salud del paciente
Asociación de la consulta oftalmológica en pacientes con diabetes mellitus tipo II y retinopatía diabética
No full textLa diabetes mellitus tipo 2 (DM2) es una enfermedad que cada día afecta a millones de personas en el mundo, y es considerada una patología es silenciosa ya que la mayoría de los pacientes comienzan a presentar síntomas una vez que se ha instaurado un daño a nivel celular en diversos tejidos. Una de las principales complicaciones de la DM2 es la retinopatía diabética. Por lo tanto, el objetivo del estudio es establecer la relación entre el tiempo de evolución de la DM2 con los grados de retinopatía diabética. Para esto, se realizó un estudio por muestreo no probabilístico a 58 pacientes con DM2. Los resultados mostraron que existe una relación significativa entre el tiempo de evolución de la DM2 y los grados de retinopatía, por lo que concluimos que una detección temprana de la enfermedad, así como un seguimiento oftalmológico oportuno es clave para salvaguardar la salud del paciente
Variations on the Author
Get PDF“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
Get PDFWe 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
Get PDFWe 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
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