Assessment-oriented Java development vs. Clickers' use in formal assessment of basic principles of dental radiology: The opinion of dentistry students

[EN]The integration of Information and Communication Technologies (ICTs) has generated a change in teaching methodologies au university level. The objective of this study is to check the effectiveness of interactive processes in summative assessment or learning-oriented assessment contexts using electronic self assessment processes (Java application) versus the use of audience response systems (ARS) or “clickers” in the classroom, from the point of view of students’ satisfaction measurement. The sample for this study is composed by the students of the first year of the Degree on Dentistry of the School of Medicine of the University of Salamanca, and which was carried out by means of a questionnaire, where 1 stood for total disagreement and 7 for absolute agreement; together with an statistical analysis (Conbach alpha) that allows us to value the reliability of the answers obtained. Results reflect the students’ answers to the questionnaire, as well as the relationship between the two systems. To conclude, there are certain coincidences when judging both assessment tools, but we also observe that there is a better predisposition towards Java system rather than to clickers. The job done by a coordinated interdisciplinary team formed by members of different areas has made it possible to build and validate interesting pedagogical materials, as well as to develop formative assessment strategies that could be generalized to other subjects in different degrees

"Eficiencia en el Mercado Accionario: Nueva Evidencia para el Caso Mexicano "

This article uses bootstrap techniques to determine whether the exchange market in Mexico, during the period 1997-2011, is efficient or not. To the best of our knowledge, although this methodology is not new, it has not yet been applied to the case of Mexico. Based on the daily changes of observed exchange rates random sequences of prices are generated to obtain the empirical distribution of returns under two well known trading rules: filter and moving average. Further, we determine if, for each trading rule, the returns obtained with the series of prices actually observed belong to the corresponding empirical distribution, in which case the foreign exchange market will be consistent with the efficiency hypothesis. Our results suggest that there is no evidence to reject the efficiency hypothesis in the foreign exchange Mexican market for the period considered in this study.En este artículo se utiliza el método de bootstrap para evaluar la eficiencia del mercado cambiario en México durante el periodo 1997-2011. Si bien esta metodología no es nueva, hasta donde se conoce no ha sido todavía aplicada al caso mexicano. Esencialmente, a partir de los cambios diarios observados de precios se generan series aleatorias de precios a fin de obtener la distribución empírica de los beneficios obtenidos bajo dos conocidas reglas técnicas de operación bursátil: las reglas de filtro y media móvil. Posteriormente se determina si, para cada regla técnica, los beneficios obtenidos con las series realmente observadas pertenecen, con un nivel de confianza dado, a la distribución empírica, en cuyo caso el comportamiento observado del mercado sería consistente con la hipótesis de eficiencia. Los resultados obtenidos con esta metodología sugieren que no hay evidencia que permita rechazar la hipótesis de eficiencia del mercado cambiario mexicano durante este periodo.

Modelo de competencia docente del profesor de medicina en la UNAM

El estudio presenta un modelo de competencia docente del profesor de medicina. Fue generado a partir de un modelo conceptual preexistente: a) dicho modelo se sometió al juicio de expertos quienes seleccionaron las competencias de mayor impacto; b) se construyó un perfil de competencias; c) se generó un instrumento basado en la opinión de los estudiantes y otro de autoevaluación; d) ambos fueron validados por 18 expertos en evaluación; e) se aplicó a 2,281 estudiantes y 107 profesores, obteniendo un comportamiento psicométrico adecuado que permitió establecer un modelo acorde a las tendencias actuales en evaluación del desempeño docente

Más que la suma de las partes: análisis del Programa Hábitat Vertiente Centros Históricos en la Ciudad de México

This paper aims to analyze the policy processes of the Slope of Historic Mexican Centres on the UNESCO´s World Heritage list in the Habitat Program which is coordinated by the Secretaría de Desarrollo Social (Sedesol). The document is divided in three parts: the first discusses the justification of the government intervention in the conservation and restoration of Historical Heritage. Later, the text explores the processes by which studied policy enters into the government’s agenda and what effects it produces. Finally, this study provides some reflections and comments about the program in general.El presente trabajo tiene como objetivo analizar los procesos de política de la Vertiente de Centros Históricos Mexicanos inscritos en la lista de Patrimonio Mundial de la Organización de las Naciones Unidas para la Educación, la Ciencia y la Cultura (UNESCO) del Programa Hábitat coordinado por la Secretaría de Desarrollo Social (Sedesol). El documento está divido tres partes: la primera analiza la justificación de la intervención gubernamental en la conservación y restauración de Centros Históricos Patrimonio de la Humanidad. Posteriormente, el texto explora los procesos por los cuales la política pública estudiada entra en la agenda de gobierno y cuáles son los efectos que produce. Por último, el presente estudio provee de ciertas reflexiones y observaciones con respecto al Programa

Assessing two Theoretical Frameworks of Civic Engagement

The purpose of this study was to empirically test two major theoretical models: a modified version of the social capital model (Pattie, Seyd and Whiteley, 2003), and the Informed Social Engagement Model (Barr and Selman, 2014; Selman and Kwok, 2010), to explain civic participation and civic knowledge of adolescents from Chile, Colombia and Mexico, using data from the International Civic and Citizenship Education Study 2009 (Schulz, et al., 2010). The models were used to identify factors associated with different levels of knowledge and civic participation: expected participation in legal and illegal protests, and electoral participation. Data were analyzed using regression analysis. Results show that the Informed Social Engagement approach (ISEM), explains better the observed differences in civic knowledge and civic participation, than the Social Capital Model (SCM). That is, the expected values associated with the variables included in the ISEM are closer to the observed values, than those predicted by the SCM. This is true for the three outcomes (expected participation in legal protests, illegal protests, and electoral participation) and in the three countries analyzed (Chile, Colombia and Mexico)

Miradas exploratorias. Fotografías inéditas del viaje a Italia de Asís Cabrero

[EN] As was the case in not just a few of his contemporaries, Francisco Cabrero's modern advent is centred on his initial trip, in this case the one made to Italy in 1941. The historiography of Spanish architecture in general and the specific studies on the architect have shown the impact and the scope of this two-month trip on his later career. Fleeing the ruling academicism in Spain, Cabrero 'discovers' in Italy the rationalist and abstract expression of monumentality. Nevertheless, the access to a wide photographic reportage —unpublished up to now— accomplished by the architect during the trip, allows us to document his journey but also to put in to question those claims. The photographs introduce us for the first time to Cabrero the photographer —to his particular way of constructing an image— and as a result they pave the way for the recognition of this visual tool as an exploratory instrument of the gaze to the detriment of the pencil and notebook. Above all and paradoxically, they contradict the supposed fascination for modern language in Cabrero since discovering that historical architecture was almost the only objective of his selective photographic look and as a result, the primary source, of his transforming inspiration.[ES] Como ocurrió en el caso de no pocos de sus contemporáneos, el advenimiento moderno de Francisco Cabrero se vertebra en torno a un viaje iniciático, en este caso el realizado a Italia en 1941. La historiografía de la arquitectura española en general y los estudios específicos sobre el arquitecto han señalado el impacto y el alcance de este viaje de dos meses de duración en su trayectoria posterior. Huyendo del academicismo imperante en España, Cabrero ‘descubre’ en Italia la expresión racionalista y abstracta de la monumentalidad. Sin embargo, el acceso a un amplio reportaje fotográfico —inédito hasta la fecha— realizado por el arquitecto durante el viaje, nos permite documentar su periplo pero también poner en cuestión esas aseveraciones. Las fotografías nos descubren por primera vez al Cabrero-fotógrafo —su particular manera de construir la imagen— y apuntan en sí mismas a la revalorización de esta herramienta visual como instrumento exploratorio de la mirada en detrimento del lápiz y el cuaderno de apuntes. Pero sobretodo y paradójicamente contradicen la supuesta fascinación por el lenguaje moderno en Cabrero al descubrirse que fue la arquitectura histórica el objetivo casi único de su selectiva mirada fotográfica y la fuente primaria, en suma, de su inspiración transformadoraAldea Hernández, MJ.; Bergera, I. (2017). Exploratory gazes. Unpublished photographs of Asís Cabrero's Italian trip. VLC arquitectura. Research Journal. 4(1):31-60. doi:10.4995/vlc.2017.7011SWORD316041Aldea Hernández, María José. "Francisco de Asís Cabrero: vuelta al mundo en busca de la historia". In Inter Fotografía y Arquitectura, Congreso internacional, edited by Rubén Alcolea, Jorge Tárrago. Pamplona: Servicio Publicaciones Universidad de Navarra, 2016.Capitel, Antón. "Abstracción plástica y significados en la obra de Francisco Cabrero", In Arquitectos, n. 118. Madrid: CSCAE, 1990.Benton, Tim. Le Corbusier Secret Photographer. Zürich: Lars Müller Publishers, 2013.Bergera, I-aki. Rafael Aburto Arquitecto. La otra modernidad. Arquíthesis collection, n. 18. Barcelona: Fundación Caja de Arquitectos, 2005.Bergera, I-aki. "Spain, photographs without photographer: la mirada analítica de Bernard Rudofsky". In Bernard Rudofsky: Desobediencia crítica a la modernidad. Granada: Centro José Guerrero, 2014.Cabrero Torres-Quevedo, Francisco de Asís. Cuatro Libros de Arquitectura. Madrid: Colegio Oficial de Arquitectos de Madrid, 1992.Cabrero Torres-Quevedo, Francisco de Asís. "La obra de Francisco Cabrero". In Francisco Cabrero, arquitecto. 1939-1978. Edited by Javier Climent. Madrid: Xarait, 1979.Colomina, Beatriz. "Hacia un arquitecto global". En Los viajes de los arquitectos. Nueva York, Pamplona: GSAPP, T6 Ediciones, 2011.Conesa, Mariano. "Francisco Cabrero. Instrumentos universales al servicio de la arquitectura", in I Congreso Pioneros de la Arquitectura Moderna Espa-ola: Vigencia de su pensamiento y obra. Madrid: Fundación Alejandro de la Sota 2014.Delgado Orusco, Eduardo. "La OSH y las normas de Cabrero". In Un siglo de vivienda social: 1903-2003, Catálogo de exposición. Edited by Carlos Sambricio. Madrid: Ministerio de Fomento, Ayuntamiento de Madrid and Consejo Económico y Social, 2003.García Rubio, Rubén. Densidad aparente. Las lecciones constructivas de Rome en Louis I. Kahn, Tesis doctoral. Valladolid: Universidad de Valladolid, Universitá degli Studi Rome Tre, 2016.Grijalba Bengoetxea, Alberto. "El cuaderno olvidado. La guerra de Asís Cabrero". In El dibujo de viaje de los arquitectos. Actas del 15 congreso de Expresión Gráfica Arquitectónica. Las Palmas de Gran Canaria: EGA, May, 2014.Moreno Mansilla, Luis. Apuntes de viaje al interior del tiempo. Arquíthesis Collection.10. Barcelona: Fundación Caja de Arquitectos, 2002.Pagano, Giuseppe. Vocabulario de imágenes. Valencia: Lampreave & Millán, 2008.Ruiz Cabrero, Gabriel. "Vida y obra de Asís Cabrero". In Legado 02. Francisco de Asís Cabrero. Madrid: Fundación COAM, 2007

Madera y fuego

Publicación divulgativa sobre el comportamiento de la madera ante el fuego. Dirigida principalmente al ámbito de la construcción

Seasonal variability of oceanographic conditions off NW Galician waters influencing the early life trophic ecology of European hake Merluccius merluccius by stable isotope analysis

Stable isotopes of nitrogen (δ15N) and carbón (δ13C) have been used as tracers for analyzing the trophic ecology of European hake larvae collected during the winter and summer of 2012 off NW Galicia. The sampling times correspond to periods of high and low hake spawning activity, respectively. Trophic enrichment was analyzed using as baseline two different plankton size fractions, corresponding to micro- (55-200μm) and mesozooplankton (>200μm). During both seasons, the δ15N signatures of hake larvae showed higher values than the zooplankton fractions. The first survey carried out in late February was characterized by a preceding marked upwelling, low geostrophic velocities in the hydrographic circulation and an intense mixing of the water column. This environmental scenario is hypothesizing that originated a great nutrient availability for primary consumers showed its effect in the low δ15N values observed in plankton and hake larvae. During July, the environmental setting corresponded to period where the water column was stratified, an anticyclonic gyre was formed in the center of the study area that concentrated particles and weak upwelling conditions and strong geostrophic currents where found. This scenario was characterized hypothetically by low nutrient availability in which production is mainly based on regenerated nutrients which would explain the higher δ15N values found during this period. On the other hand, the greater δ13C values observed in summer in comparison to winter suggest differences in the energetic sources of carbon (Fig. 1). The discussion of results is centered in how oceanographic variability conditions signatures of stable isotope fractionation in the early life trophic food web influencing the variable trophic pathways of larval hake subject to contrasting environmental conditions, thereby affecting their larval nutritional condition as estimated by RNA/DNA ratios and the Fulton index. This study was financed by the projects: CRAMER-CTM2010-21856-CO3 y ECOPREGA-10MMA602021P