13 resultados para 58597


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The disparity that exists between the highest and lowest achievers together with deficit approaches to teaching, learning and assessment raise serious equity issues related to fairness, validity, culture and access, which were analysed in a recent Australian Research Council funded project. This chapter explores the potential that exists for teachers to work with Indigenous Teacher Assistants (ITAs) to secure cultural connectedness in teaching, learning and assessment of Indigenous students. The study was a design experiment, which was conducted in seven Catholic and Independent primary schools in northern Queensland and involved semi-structured focus group interviews with Year 4 and 6 Indigenous students, principals, teachers and Indigenous Teacher Assistants. Classroom observations and document analyses were also conducted. This corpus of data was analysed using a sociocultural theoretical lens. The use of a sociocultural analysis helped to identify cultural influences, Indigenous students’ funds of knowledge and values. The information from this analysis was made explicit to teachers to demonstrate how they could enhance their pedagogic and assessment practices by embracing and extending the cultural spaces for learning and teaching of Indigenous students. The way in which teachers construct their interactions for greater cultural connectedness and enhanced learning would appear to rely on relationship building with Indigenous staff, Indigenous students’ cultural knowledge, and improved understanding of assessment and related equity issues.

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During 28-29, September 2005, water was drawn from Hanjiang River and Houguan Lake to the Yangzi River via Sanjiao Lake and Nantaizi Lake in Wuhan in order to provide favorable conditions for ecosystem restoration. To evaluate the feasibility and validity of drawing water as a means of ecosystem restoration, zooplankton populations were studied 3 times (before, immediately after finishing and a month after drawing water) at seven locations from 27 Sept. 2005 to 2 Nov. 2005. Water quality in the lakes was mostly improved and zooplankton species richness decreased as soon as drawing water had finished but increased a month after drawing water. Zooplankton density and biomass was reduced in the lakes by drawing water but was increased at the entrance to Sanjiao Lake because of landform geometry change. Before drawing water, most species in Sanjiao Lake e.g., Brachionus sp. and Keratella sp. were tolerant of contamination. After drawing water oligotrophic-prone species such as Lecane ludwigii and Gastropus stylifer emerged. We conclude that drawing water could be important for improving water quality and favour ecosystem restoration. Dilution of nutrient concentrations may be an important role in the effect.

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Référence bibliographique : Rol, 58597

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Reflexión sobre el uso del cine como estrategia de enseñanza y su finalidad educativa. Se pretende la aplicación de un procedimiento didáctico que facilite aprender del medio cinematográfico y tomar conciencia de la influencia del cine en la transmisión de valores. Se sugiere una lista de más de 100 películas comerciales para su utilización en la formación psicopedagógica de los docentes. Se describe el modelo didáctico de Observar, Relacionar y Aplicar (ORA) a partir del cual se comentan las películas cinematográficas que se ofrecen como ejemplos en la segunda parte del trabajo.

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Es un libro que introduce al lector en el mundo de la medida, y es el resultado de un trabajo experimental realizado por los autores durante varios cursos en un Instituto de Barcelona. Se trata, no sólamente de conocer las unidades, los mecanismos relativos al cambio de unidades, los errores cometidos en la medición, el sistema de escritura de los números y sus algoritmos, sino de llegar a una concepción más global del tema, así comno de darle un enflque funcional. La medida como nstrumento que permite representar, describir, descubrir y predecir hechos naturales o artificiales es el objetivo del libro. Los diferentes conceptos, habilidades y procedimientos se van desarrollando a través de una serie de actividades y ejercicios puramente instrumenatales hasta lecturas comprensivas, prácticas de medidas, descripción de hechos, búsqueda de información, etc.

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Exosomes (Exos) are secreted nanovesicles that contain membrane proteins and genetic material, which can be transferred between cells and contribute to their communication in the body. We show that Exos, obtained from mature human dendritic cells (DCs), are incorporated by tumour cells, which after Exos treatment, acquire the expression of HLA‐class I, HLA‐class II, CD86, CD11c, CD54 and CD18. This incorporation reaches its peak eight hours after treatment, can be observed in different cell tumour lines (SK‐BR‐3, U87 and K562) and could be a means to transform non‐immunogenic into immunogenic tumour cells. Interestingly, tetraspanins, which are expressed by the tumour cells, have their surface level decreased after Exo treatment. Furthermore, the intensity of Exo incorporation by the different tumour cell lines was proportional to their CD9 expression levels and pretreatment of Exos with anti‐CD9 decreased their incorporation (by SK‐BR‐3 cells). This modification of tumour cells by DC‐derived Exos may allow their use in new immunotherapeutic approaches to cancer. Furthermore, by showing the involvement of CD9 in this incorporation, we provide a possible selection criterion for tumours to be addressed by this strategy

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von Josef Akermann

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This study, carried out in the context of the Factor Markets research project, investigates the impact of the SAPS (Single Area Payment Scheme) on farmland rental rates in the new EU member states. Using a unique set of farm level panel data with 20,930 observations for 2004 and 2005 we are able to control for important sources of endogeneity. According to our results, the SAPS has a positive and statistically significant impact on land rents in the EU. However, the estimated incidence is smaller than predicted theoretically. Land rents capture only 19 cents of the marginal SAPS euro, and around 10% of the SAPS benefit non-farming landowners through higher farmland rental prices. As the share of rented land is higher in corporate farms than individual ones, family farms benefit more from the SAPS than corporate farms do.