1,720,953 research outputs found
Effectiveness and Safety of Intracanal Pulsed Radiofrequency of the Dorsal Root Ganglion in Chronic Lumbar Radicular Pain
No full textEl dolor lumbar es una de las principales causas de discapacidad a nivel mundial y su prevalencia aumenta persistentemente. En el año 2020, afectaba a 619 millones de personas y se estima un incremento aproximado del 36% para el año 2050. El dolor lumbar crónico, definido como aquel que perdura más de 3 meses, afecta gravemente la funcionalidad y suele acompañarse de depresión y ansiedad generando un ciclo de afectación de la calidad de vida y limitación funcional. El dolor lumbar radicular resultado de la compresión de raíces nerviosas afecta entre el 13 al 40% de la población. Los tratamientos conservadores como fármacos o fisioterapia, tienen una eficacia limitada. La radiofrecuencia pulsada epidural del ganglio de la raíz dorsal por vía intra canal bajo guía fluoroscopia coma ha mostrado alivio del dolor mejoría en la calidad de vida y menor dependencia a analgésicos. Diseño materiales y métodos: Se llevó a cabo un estudio observacional analítico retrospectivo de serie de casos en el hospital universitario santa fe de Bogotá Es inclusión de pacientes adultos atendidos entre marzo de 2024 y marzo de 2025. Se seleccionó a pacientes mayores de 18 años con dolor lumbar radicular crónico mayor de 3 meses de evolución, escala numérica del dolor mayor o igual a 5 con refractaria al tratamiento convencional. El muestreo fue no probabilístico por conveniencia. Se analizaron todas las historias clínicas de los pacientes que cumplieron criterios de inclusión y se realizó seguimiento en los controles clínicos periódicos y en aquellos casos donde no se completaron los datos contacto vía telefónica. El análisis estadístico aplicó pruebas para definir El grado de mejoría del dolor y respuesta al tratamiento al igual que la mejoría con escalas de valoración funcional al igual que las complicaciones registradas en este periodo de seguimiento. Resultados: Se observó una mejoría clínicamente significativa en términos de intensidad del dolor y mejoría de la limitación funcional por escalas de valoración física. Se observó diferencia estadísticamente significativa en la disminución de los valores de escala numérica del dolor al igual que la puntuación de las escalas de limitación funcional en los periodos de seguimiento clínico. No se identificó complicaciones neurológicas mayores asociadas al procedimiento. Se terminó la dosis de radiación total promedio, por área y por numero de niveles intervenidosHospital Universitario Fundación Santa Fe de BogotáEspecialista en Medicina del Dolor y Cuidados PaliativosEspecializaciónLow back pain is one of the leading causes of disability worldwide, and its prevalence continues to rise. In 2020, it affected 619 million people, and it is projected to increase by approximately 36% by 2050. Chronic low back pain—defined as pain lasting more than three months—severely impairs functional ability and is often accompanied by depression and anxiety, creating a cycle of reduced quality of life and disability.Radicular low back pain, resulting from nerve-root compression, affects between 13% and 40% of the population.Conservative treatments such as medications or physical therapy have limited efficacy. Epidural pulsed radiofrequency of the dorsal root ganglion via the intracanalar route under fluoroscopic guidance has demonstrated pain relief, improved quality of life, and reduced dependence on analgesics. Design, Materials, and Methods A retrospective, analytical, observational case-series study was conducted at the Hospital Universitario Fundación Santa Fe de Bogotá, including adult patients treated between March 2024 and March 2025. Patients over 18 years of age with chronic radicular low back pain of more than three months’ duration, a numerical pain score ≥ 5, and refractoriness to conventional treatment were selected. Non-probabilistic convenience sampling was used. All medical records meeting inclusion criteria were reviewed, and patients were followed during routine clinical visits or, when data were incomplete, by telephone contact. Statistical analyses were applied to determine the degree of pain improvement, treatment response, functional-status changes (using validated scales), and any complications recorded during the follow-up period. Results: A clinically significant improvement was observed in terms of pain intensity and reduction of functional limitation, as measured by physical assessment scales. A statistically significant difference was found in the decrease of numeric pain scale values as well as in the scores of functional limitation scales across clinical follow-up periods. No major neurological complications related to the procedure were identified. The average total radiation dose, dose per area, and dose per number of treated levels were recorded
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
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
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
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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