1,721,522 research outputs found
Uso del sistema de corrección coplanar en Escoliosis Neuromuscular. Comparación con la técnica de desrotación apical y análisis de las complicaciones y comorbilidades
Full text linkTesis para el grado de Doctor en medicina clínica, con mención Tesis InternacionalThe concept of neuromuscular scoliosis includes a wide variety of pathologies
associated with both the nervous and muscular systems they represent a challenging population to treat.
As such, determining the correct surgical plan can oftentimes be complex given the multitude of variables
to consider, ranging from clinical (i.e., ventilatory function, comorbidities) to biomechanical (i.e., pelvic
obliquity, curve magnitude and rigidity, bone quality, sitting balance. Currently, no clear patterns of
neuromuscular curvatures have been described in the literature and there remains a lack of consensus on
the best technique to achieve a balanced posture.
In the setting of neuromuscular scoliosis, a surgeon has multiple corrective techniques at his or her
disposal to select from. The use of traction, either preoperatively or intraoperatively, has been previously
reported in patients with high grade curves. Combined approaches have a role in correction when treating
patients with rigid curves and permit better control of pelvic obliquity; however, they are also associated
with increased OR time and EBL. The posterior-only approach on the other hand has been associated with
fewer complications and thus remains the preferred technique for a majority of spine surgeons.
The Vertebral Coplanar Alignment (VCA) technique takes into consideration aspects of vertebral
anatomy that the Apical Derotation (AD) techniques do not. Because the medial cortex of the vertebral
body is wider and more resistant than the lateral cortex, this allows for more anchor points during
derotation for a better distribution of forces. Furthermore, VCA takes advantage of the fact that children
have stronger ligaments and more elastic bones by relying on this strong attachment to guide correction.
By relocating the normal coplanar axis into a single plane, translation and derotation can be achieved in
one gesture. With such a heterogeneous group of disorders, it is difficult to establish guidelines for preoperative
planning, surgery, and postoperative treatment. Although patients are evaluated individually, the
identification of shared characteristics can be valuable for treatment algorithms. Complications in
neuromuscular scoliosis surgery are difficult to anticipate and no association has been studied between
perinatal comorbidities, preoperative evaluation, surgical parameters, and postoperative complications.
One of the complications is profuse bleeding, the mechanisms of addressing this issue are either
replacing blood, involving autotransfusions, cell saver and allotransfusions, all which are potentially
associated with complications, increase procedures and higher costs, or saving blood. In recent years
tranexamic acid has taken precedence in this matter.Existen múltiples consideraciones en escoliosis neuromuscular, grandes
deformidades, curvas rígidas, mala calidad ósea y oblicuidad pélvica. No hay consenso en cual es la mejor
técnica quirúrgica para seguir con estos pacientes. La técnica de desrotación coplanar considera tres
aspectos, no evaluados previamente: que la corteza medial del pedículo es mas gruesa que la corteza lateral,
el aumento de los puntos de torque permite una mejor distribución de las fuerzas y el uso de ligamentotaxis
como coadyuvante en la maniobra de reducción. Si logramos realinear la coplanaridad normal, la traslación
y desrotación vertebral son posibles en un solo gesto quirúrgico. Las comorbilidades y complicaciones son
considerable en este grupo de pacientes y difíciles de predecir. Una de las complicaciones mas importantes
es el sangrado masivo, dentro de los mecanismos para enfrentarlo, está el uso de acido tranexámico,
habitualmente utilizado de manera endovenosa, se ha explorado también su uso tópico.
OBJETIVO: Comparar la capacidad de corrección de el Sistema de desrotación coplanar (DC) versus el
de desrotación apical (DA) en pacientes pediátricos con escoliosis neuromuscular. Como objetivo
secundario, determinar los factores predictores de riesgo de complicaciones en escoliosis neuromuscular,
con énfasis en el sangrado y el uso de acido tranexámico endovenosos y tópico para su prevención.MedicinaCiencias de la Salu
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
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
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
- …
