997 resultados para Homozygosity mapping


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Block ionomer complexes SSEBS-c-PCL were prepared, as a consequence of proton transfer from the sulfonic acid of sulfonated polystyrene-block- poly(ethylene-ran-butylene)-block-polystyrene (SSEBS) to the tertiary amine of a tertiary amine terminated poly(?-caprolactone) (APCL). The phase behavior of SSEBS-c-PCL was thoroughly investigated and the results showed that APCL in SSEBS-c-PCL displays unique crystallization behavior owing to the influence of interactions between the amine and sulfonic acid groups as well as the effects of confinement. Further, small-angle X-ray scattering study revealed that SSEBS-c-PCL displays a less ordered micro-phase structure compared to SSEBS. A quantitative mapping of mechanical properties at the nanoscale was achieved using peak force mode atomic force microscopy. It is found that the block ionomer complex possesses a higher average elastic modulus after complexation with crystallizable APCL. Additionally, the moduli for both hard and soft phases increase and the phase with higher modulus assignable to the hard SPS component shows much more pronounced changes after complexation, confirming that APCL interacts mainly with the SPS blocks. This provides an understanding of the composition and nanomechanical properties of these new block ionomer complexes and an alternative insight into the micro-phase structures of multi-phase materials.

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As part of a broad disciplinary shift, from a focus on measuring the value and meaning of cultural artefacts to understanding the import of cultural flows, humanities researchers are increasingly turning to other disciplines and disciplinary practices to inform their research. For film scholars, rather than providing a reading of specific media texts and their qualities there is an increasing focus on the contextual events that shape and formulate cinema practice. This chapter is an example of how cross-disciplinary relationships, for example between Cinema Studies, Geospatial Science, Statistics and the Creative Arts can uncover new research questions and test methodologies across uncharted disciplinary terrain. It also offers an opportunity to reflect on some of the key assumptions around collaborative research, through its reorganization of academic spaces and “sites” of knowledge.

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This chapter locates knowledge mapping within the theoretical framework of cultural historical activity theory. Cultural historical activity theory provides an analytic tool for understanding how knowledge maps can act as “stimuli-means”: a cultural artefact that can mediate the performance of subjects (Vygotsky, 1978 ). Knowledge maps possess Vygotsky’s double nature: they not only enable students to enact academic practice but also allow refl ection on that practice. They enable students to build an “internal cognitive schematisation of that practice” (Guile, 2005 , p.127). Further, cultural historical activity theory gives the tools to analyse the social context of our use of knowledge maps and thus consider the mediating rules (tacit and explicit) and division of labour that mediate our use of knowledge maps. Knowledge maps can be viewed as acting within Brandom’s ( 2000 ) space of reasons , which allows learners to use reasons to develop and exchange judgements based on shareable, theoretically articulated concepts and collectively develop the ability to restructure their knowledge and enact these judgements (Guile, 2011 ). In particular multimodal collaborative knowledge maps can act as Vygotsky’s (Vygotsky, 1978 ) zone of proximal development , where teacher and peer-to-peer interaction allow students to solve problems and learn concepts and skills that they would be otherwise unable to tackle.

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The Studying the Effectiveness of Teacher Education (SETE) project (2010- ) investigates, as a priority, how well equipped teacher education graduates are to meet the requirements of diverse school settings. This paper outlines notions of diversity as reflected in large-scale longitudinal data sets including quantitative teacher and principal surveys (n=5,000+), national audit of teacher education programs (n=500+), and analysis of data from intensive case studies which track 170 graduate teachers through the first three years of their teaching career.


The storylines that emerge highlight the significance of context for teacher education and illustrate the diversity and complexity of contexts in which Graduate teachers find themselves employed.
 
Diversity is mapped firstly in terms of geography and location (rural/urban/remote), school size, sector, and student demographics including SES; secondly we track the variety of pathways into teaching; and finally, we examine the diversity of ways in which graduates are employed and the impact of said employment status on the way in which they are able to enact the learnings from their initial teacher education program.

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While there are many small-scale case studies that investigate specific teacher education practices, large scale longitudinal studies designed to provide rich and comprehensive data about the effectiveness of teacher education, are limited (Cochran-Smith & Zeichner, 2005). The Studying the Effectiveness of Teacher Education (SETE) project aims to address this gap by investigating the effectiveness of teacher education programs in preparing teachers for the variety of school settings in which they begin their careers. This three-year study utilises large-scale surveys and case studies, and includes a comprehensive mapping of teacher education programs across Australia. It tracks all 2010/2011 teacher education graduates in Queensland and Victoria to investigate the effectiveness of particular characteristics of their teacher education programs in equipping them with the capacity to meet the learning needs of young people in a diverse range of Australian school settings.

This paper presents the findings from the mapping exercise and the surveys of teachers and principals, and the problematics and possibilities of reading across the data sets. The SETE mapping exercise used publicly available online information to examine the characteristics of initial teacher education programs accredited by the Victorian Institute of Teaching (VIT) and the Queensland College of Teachers (QCT). Preliminary results address, inter alia, the length, content and delivery of programs and critical issues of the development of pedagogical and assessment expertise and preparation to teach in diverse contexts. The paper also presents findings from the first of a series of online surveys completed by teacher education graduates in Queensland and Victoria. Beginning teachers’ responses are mapped against key characteristics of participants' pre-service programs and framed in relation to the key themes of curriculum, pedagogy, assessment, behaviour management, and engagement with school stakeholders and local community.