2 resultados para Colorometric analysis, manual

em Academic Archive On-line (Stockholm University


Relevância:

30.00% 30.00%

Publicador:

Resumo:

El objetivo de esta monografía es el de analizar el modo en el que un manual didáctico para la enseñanza del español en el contexto educativo sueco de bachillerato aplica y desarrolla la competencia pragmática funcional en sus propuestas didácticas. Para la realización de dicho análisis usaremos como instrumento de medida, por una parte, las actividades de simulación, escenario y role-play que propone Sánchez Sarmiento (2005), y que se dirigen a la activación de la competencia pragmática de los estudiantes de lenguas extranjeras y, por otra, los criterios de transacciones e interacciones de colaboración para el desarrollo de la competencia pragmática funcional que se recogen en el §.5 del Marco Común Europeo de Referencia para las lenguas: aprendizaje, enseñanza, evaluación (MCER, 2002). La hipótesis de la que parte este estudio postula que el manual que analizamos (Caminando 5, Natur & Kultur, 2013), a pesar de estar compuesto de propuestas didácticas en las que se presentan el componente pragmático funcional, no enuncia de forma explícita el trabajo con ella, no conduce ni a su activación ni a su desarrollo, su frecuencia de aparición en el manual es irregular, y las actividades que forman parte de sus propuestas didácticas no proponen reflexiones metapragmáticas sobre los propios contenidos pragmáticos de la lengua. La investigación que hemos desarrollado confirma que, aunque en algunas propuestas didácticas del manual  se proponen actividades que activan y desarrollan algunos de los criterios de transacción e interacción colaborativa del MCER (2002), su tratamiento resulta poco exhaustivo y su explicitación es escasa. Sin embargo, se puede constatar que el manual representa un acercamiento a los principios metodológicos de los enfoques comunicativos y que su explotación didáctica, aunque no de forma explícita, conduce, en parte, al trabajo con algunos de los criterios pragmáticos funcionales que se proponen en el MCER (2002).

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Projected air and ground temperatures are expected to be higher in Arctic and sub-Arcticlatitudes and with temperatures already close to the limit where permafrost can exist,resistance against degradation is low. With thawing permafrost, the landscape is modifiedwith depression in which thermokarst lakes emerge. In permafrost soils a considerableamount of soil organic carbon is stored, with the potential of altering climate even furtherif expansion and formation of new thermokarst lakes emerge, as decay releasesgreenhouse gases (C02 and CH4) to the atmosphere. Analyzing the spatial distribution andmorphometry over time of thermokarst lakes and other water bodies, is of importance inaccurately predict carbon budget and feedback mechanisms, as well as to assess futurelandscape layout and these features interaction. Different types of high-spatial resolutionaerial and satellite imageries from 1963, 1975, 2003, 2010 and 2015, were used in bothpre- and post-classification change detection analyses. Using object oriented segmentationin eCognition combined with manual adjustments, resulted in digitalized water bodies>28m2 from which direction of change and morphometric values were extracted. Thequantity of thermokarst lakes and other water bodies was in 1963 n=92, with succeedingyears as a trend decreased in numbers, until 2010-2015 when eleven water bodies wereadded in 2015 (n=74 to n=85). In 1963-2003, area of these water bodies decreased with50 651m2 (189 446-138 795m2) and continued to decrease in 2003-2015 ending at 129337m2. Limnicity decreased from 19.9% in 1963 to 14.6% in 2003 (-5.3%). In 2010 and2015 13.7-13.6%. The late increase in water bodies differs from an earlier hypothesis thatsporadic permafrost regions experience decrease in both area and quantity of thermokarstlakes and water bodies. During 1963-2015, land gain has been in dominance of the ratiobetween the two competing processes of expansion and drainage. In 1963-1975, 55/45%,followed by 90/10% in 1975-2003. After major drainage events, land loss increased to62/38% in 2010-2015. Drainage and infilling rates, calculated for 15 shorelines werevaried across both landscape and parts of shorelines, with in average 0.17/0.15/0.14m/yr.Except for 1963-1975 when rate of change in average was in opposite direction (-0.09m/yr.), likely due to evident expansion of a large thermokarst lake. Using a squaregrid, distribution of water bodies was determined, with an indistinct cluster located in NEand central parts. Especially for water bodies <250m2, which is the dominant area classthroughout 1963-2015 ranging from n=39-51. With a heterogeneous composition of bothsmall and large thermokarst lakes, and with both expansion and drainage altering thelandscape in Tavvavuoma, both positive and negative climate feedback mechanisms are inplay - given that sporadic permafrost still exist.