70 research outputs found
Lectura crítica, una herramienta para mejorar el aprendizaje de las Ciencias
El pensamiento crítico es un aspecto crucial que todo ciudadano necesita para poder participar en una sociedad democrática y plural. La lectura, a clase de ciencias de artículos y textos de diferentes fuentes, así como su comprensión crítica, puede ayudar a los estudiantes a desarrollar esta capacidad y potenciar la participación en el discurso social en relación a temáticas científicas que los afectan directamente. Nuestro estudio, que se enmarca dentro del grupo de investigación de la UAB LIEC, se centra en promover la lectura crítica de textos de contenido científico de diferentes fuentes, y analizar como esta lectura favorece un aprendizaje de las ciencias relevante socialmente. En esta comunicación se presenta los resultados de aplicar una de estas actividades realizada a partir de la lectura crítica de un artículo de prensa sobre grafitis
¿Con qué criterios valora el profesorado la aplicación de un proyecto de innovación de física en contexto?
En este trabajo presentamos algunos de los criterios con los que el profesorado valora la aplicación de un proyecto de física en contexto, analizando su contribución al desarrollo de las capacidades recogidas en las finalidades y los objetivos del bachillerato y buscando identificar los puntos fuertes y los aspectos que habría que revisar para orientar los posibles cambios a introducir para su mejora. Los resultados muestran, por una parte, que el proyecto interesa y se adapta al currículum y a las PAAU y es rico en actividades de enseñanza-aprendizaje, aunque no siempre se saben utilizar de manera eficiente y que, por otra, genera un proceso de formación en el profesorado que se valora como muy positivo y que comporta cambios profesionales más allá de la aplicación del proyecto
Miniatures from domestic contexts in Iron age Iberia
This article reviews a set of miniatures from domestic contexts in Iron Age eastern Iberia, and interprets them in terms of their role in forging social personae. After an introduction to the historical case under consideration, the miniatures are described in terms of their typology and their contexts of provenance are outlined. Though not abundant, they tend to occur in central places in the landscape; specifically, they are often found in houses of the powerful. The vast majority are miniatures of pottery and tools, though some miniature weapons are recorded. We contend that these objects were used as a means of enculturation and for the learning of values and norms. It is no coincidence that they emerge in the archaeological record of Iron Age Iberia at the same time as the rise of a social structure based on hereditary power
Enquesta preliminar de càries dentària en la població escolar del Priorat, la Ribera d'Ebre i la Terra Alta: objectius i metodologia (I.ª part)
Podeu consultar la segona part de l'article a: http://hdl.handle.net/2445/112051Hi ha una notable escassetat de dades i d'estudis epidemiològics sobre la magnitud del problema de la càries dentària a Catalunya i a la resta d'Espanya. L'únic treball realitzat a Espanya prou important per poder extreure'n resultats significatius és el que va realitzar la Direcció General de Sanitat, durant els anys 1968-1969, entre la població escolar..
Resultats de l'enquesta preliminar de càries dentària en la població escolar del Priorat, Ribera d'Ebre i Terra Alta (2.ª part)
Podeu consultar la primera part de l'article a: http://hdl.handle.net/2445/106530Hi ha una elevada prevalença de càries dentària en la població d'edat escolar d'aquestes tres comarques. Així, la prevalença de càries en dents permanents és del 71,7%. Les xifres són encara més preocupants si considerem la càries en dents temporals. En aquest cas, el 91% dels nens de 6 a 14 anys té algun tipus de càries
Applying action research in CAD teaching to improve the learning experience and academic level
Update of the 5 MW Beam-on-Target Requirements for improvement of the materials irradiation performance at IFMIF-DONES
Palaeogenomic analysis of black rat (Rattus rattus) reveals multiple European introductions associated with human economic history
The distribution of the black rat (Rattus rattus) has been heavily influenced by its association with humans. The dispersal history of this non-native commensal rodent across Europe, however, remains poorly understood, and different introductions may have occurred during the Roman and medieval periods. Here, in order to reconstruct the population history of European black rats, we generated a de novo genome assembly of the black rat, 67 ancient black rat mitogenomes and 36 ancient nuclear genomes from sites spanning the 1st-17th centuries CE in Europe and North Africa. Analyses of mitochondrial DNA confirm that black rats were introduced into the Mediterranean and Europe from Southwest Asia. Genomic analyses of the ancient rats reveal a population turnover in temperate Europe between the 6th and 10th centuries CE, coincident with an archaeologically attested decline in the black rat population. The near disappearance and re-emergence of black rats in Europe may have been the result of the breakdown of the Roman Empire, the First Plague Pandemic, and/or post-Roman climatic cooling.Competing Interest StatementThe authors have declared no competing interest.- Results and Discussion -- The demographic history of Rattus rattus and its closely related species -- A global phylogeography of the black rat based on mitochondrial DNA -- Ancient genomes reveal the relationships of European black rats over space and time - Discussion - Method
Poor prognostic factors guiding treatment decisions in rheumatoid arthritis patients: a review of data from randomized clinical trials and cohort studies
Relationship between time-integrated disease activity estimated by DAS28-CRP and radiographic progression of anatomical damage in patients with early rheumatoid arthritis
<p>Abstract</p> <p>Background</p> <p>The main aim of the study was to investigate the relationship between persistent disease activity and radiographic progression of joint damage in early rheumatoid arthritis (ERA).</p> <p>Methods</p> <p>Forty-eight patients with active ERA was assessed every 3 months for disease activity for 3 years. Radiographic damage was measured by the Sharp/van der Heijde method (SHS). The cumulative inflammatory burden was estimated by the time-integrated values (area under the curve-AUC) of Disease Activity Score 28 joint based on C-reactive protein (DAS28-CRP) in rapid progressors versus non-progressors. Bland and Altman's 95% limits of agreement method were used to estimate the smallest detectable difference (SDD) of radiographic progression. The relationship between clinical and laboratory predictors of radiographic progression and their interactions with time was analysed by logistic regression model.</p> <p>Results</p> <p>After 3-years of follow-up, radiographic progression was observed in 54.2% (95%CI: 39.8% to 67.5%) of patients and SDD was 9.5 for total SHS. The percentage of patients with erosive disease increased from 33.3% at baseline to 76% at 36 months. The total SHS of the progressors worsened from a median (interquartile range) of 18.5 (15-20) at baseline to 38.5 (34-42) after 3 years (p < 0.0001) whereas non-progressors worsened from a median of 14.5 (13-20) at baseline to 22.5 (20-30) after 3 years (p < 0.001). In the regression model, time-integrated values of DAS28-CRP and anti-CCP positivity have the highest positive predictive value for progression (both at level of p < 0.0001). Radiographic progression was also predicted by a positive IgM-RF (p0.0009), and a high baseline joint damage (p = 0.0044).</p> <p>Conclusions</p> <p>These data indicate that the level of disease activity, as measured by time-integrated DAS28-CRP, anti-CCP and IgM-RF positivity and a high baseline joint damage, affects subsequent progression of radiographic damage in ERA.</p
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