Search results for " rev"
showing 10 items of 3376 documents
Cuencas de montaña y la construcción de una encuesta interdisciplinaria
2021
Este estudio presentó una reflexión sobre la encuesta como estrategia de investigación social, dentro de un contexto específico, como lo representan las cuencas de montaña. Y más aún, la problemática se enfocó en la recolección de datos que tienen que darse dentro de los sistemas de riego; por esta razón, el objetivo fue la identificación de aquellos aspectos que deben ser tomados en cuenta para la construcción de una encuesta interdisciplinaria en ese contexto. Se realizó una revisión sistemática exploratoria de literatura sobre el tema propuesto y en la región señalada. Los principales hallazgos establecieron la necesidad de que los estudios sobre estos ecosistemas, tienen que tomar en cu…
Nursing students’ professional identity development: An integrative review
2021
The aim of this integrative review was to identify and synthesize current evidence of factors that influence the professional identity development of nursing students in nursing educational programs. Cinahl (EBSCO), Medline, ERIC, Embase, and PsycINFO were searched. Three different appraisal tools and the PRISMA checklist were used. The data from both quantitative and qualitative studies (19 primary studies) were analyzed by applying qualitative content analysis. The analysis revealed two main themes: a caring practice–academic partnership and support in the learning environment. The following seven sub-categories were identified: clinical supervisors, ethical competence, preparation, self…
Relationship between Training Load Management and Immunoglobulin A to Avoid Immunosuppression after Soccer Training and Competition: A Theoretical Fr…
2021
Immunoglobulin A (IgA), which is the main effector against upper respiratory tract viruses such as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has been related to training load management. The aim of this systematic review was to establish the relationship between training load and salivary IgA based on current evidence in order to avoid immunosuppression after exercise and players´ vulnerability to virus contagion. A systematic review of relevant articles was carried out using two electronic databases (PubMed and Web of Science) until 19 May 2021. From a total of 127 studies initially found, 23 were included in the qualitative synthesis. These studies were clustered depen…
SARS-CoV-2 in patients with cancer: possible role of mimicry of human molecules by viral proteins and the resulting anti-cancer immunity
2021
AbstractA few reports suggest that molecular mimicry can have a role in determining the more severe and deadly forms of COVID-19, inducing endothelial damage, disseminated intravascular coagulation, and multiorgan failure. Heat shock proteins/molecular chaperones can be involved in these molecular mimicry phenomena. However, tumor cells can display on their surface heat shock proteins/molecular chaperones that are mimicked by SARS-CoV-2 molecules (including the Spike protein), similarly to what happens in other bacterial or viral infections. Since molecular mimicry between SARS-CoV-2 and tumoral proteins can elicit an immune reaction in which antibodies or cytotoxic cells produced against t…
Real-world impact of rotavirus vaccination in European healthcare settings: a systematic literature review
2022
INTRODUCTION: Rotavirus is one of the most common pathogens causing diarrhea in children <5 years and has a major impact on childhood morbidity and mortality. Since the implementation of rotavirus vaccines into childhood immunization programs across Europe, there has been a reduction in rotavirus burden, including hospitalizations, outpatient cases, costs, and deaths. AREAS COVERED: A systematic literature review identified publications describing the clinical and economic impact of rotavirus vaccinations across Europe, from their introduction in 2006 to the end of 2020. A total of 3,137 articles were identified, of which 46 were included in the review. Included articles reported the impact…
The influence of improvisation activities on speaking confidence of EFL student teachers
2020
The purpose of the present study was to explore the application of improvisation activities in English teacher education, specifically to investigate their influence on the student teachers’ confidence when speaking English spontaneously. The improvisation activities consisted of storytelling, conversations and status expressions. Data were drawn from both pre- and post-questionnaires and retrospective texts. The statistical findings showed significant improvements in the student teachers’ level of speaking confidence and degree of relaxation while speaking English. The findings of the qualitative analysis confirmed this, and participants stated that the fun, collaboration and high degree o…
Il Paradigma della Città Fluida
2013
Nella recente crisi globale i poderosi flussi di capitali finanziari, sociali e relazionali che hanno alimentato la riqualificazione urbana nel corso degli ultimi quindici anni non sono più disponibili ad essere intercettati in maniera indiscriminata così come è stato possibile fino a qualche anno fa. Nell'era della crisi strutturale le città più dinamiche non sono più quelle in grado di attrarre progetti urbani iconici ed investitori spinti dal mercato immobiliare o dalla redditività delle attività ricreative, ma quelle città che, a partire dalle loro profonde e diversificate risorse culturali, saranno capaci di attuare una vera e propria “metamorfosi” per usarle come base per la creazione…
Tests for time reversibility: a complementarity analysis
2003
Abstract Since time reversibility (TR) is a necessary condition for an independent and identically distributed (iid) sequence, several tests for TR have been suggested to be applied as tests for model misspecification. In this paper, we analyze possible complementarities among two well known TR tests (Ramsey and Rothman's test, and Chen et al.'s test) in two situations: (1) the fitted model is a linear ARMA model when the true data generating process is a nonlinear-in-mean model (either threshold autoregressive or bilinear), and (2) the fitted model is a symmetric GARCH model but the true process belongs to the asymmetric GARCH family (either EGARCH or GJR). The results suggest that there a…