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31.
Dean B. Cowie 《Journal of The Franklin Institute》1974,298(4):307-319
Genetic interrelationships among the T-even bacteriophages have been studied by DNA-DNA hybridization techniques. The isolation, identification and characterization of completely distinct nucleotide sequences from heteroduplexes provided DNA fractions which, upon further testing, gave results useful for a comparative evaluation of the viral contents of the T-even bacteriophages. 相似文献
32.
Bronwen Maxwell 《Teaching Education》2013,24(4):335-348
Recent reforms of initial teacher education (ITE) in the learning and skills sector (LSS) in England are standards based and emphasise subject specialism. The reforms are underpinned by objectivist epistemological assumptions which are incompatible with socio‐cultural theories of professional knowledge, and ignore the diverse teaching roles and contexts in the sector and wider systemic issues. A qualitative scoping study found that LSS in‐service trainee teachers drew on three types of knowledge resources, or clusters of ‘rules’ for practice, in their teaching: these were related to their subject/vocational area, generic teaching and learning processes and specific learners and groups. Trainees generated knowledge resources through participation in their workplace, ITE course and other social contexts, and from embedded and encoded workplace knowledge. Trainees’ beliefs, values and prior experiences were both a knowledge resource and influenced their engagement with knowledge generation activities. It is argued that using a knowledge resources perspective, which recognises how trainees generate knowledge and seeks to bridge gaps in their access to knowledge resources, would be more effective in supporting trainees’ development than the current reforms. 相似文献
33.
Bronwen J. Davis Mary Ann Evans Kailey Pearl Reynolds 《Scientific Studies of Reading》2013,17(4):341-364
We studied 52 parent–child dyads reading an alphabet book to examine the nature of children's miscues and parents' feedback, and whether miscues and feedback were related to each other and to preliteracy skills. Letter knowledge, phonological awareness, and expressive vocabulary were assessed in 5-year-old nonreaders who were also audiotaped reading an alphabet book at home with their parent. Results indicate that after controlling for vocabulary, children with higher phonological awareness more often labeled objects with a name beginning with the page's target letter. Parents provided substantial sustaining feedback after miscues, as though using alphabet books as a way of fostering their child's literacy. Findings highlight the need to consider both the child's skill-base and parent–child interactions to understand the role of alphabet books in literacy development. 相似文献
34.
Bronwen J. Cohen Marta Korintus 《Early Years: An International Journal of Research and Development》2017,37(2):235-249
Recent anniversaries remind us of the lengthy history of the European Union’s involvement in ECEC, from the early work of the European Commission’s Childcare Network, from 1986–1996, to the European Commission’s publication in 2015 of an indicative Roadmap outlining potential new initiatives. European-funded research and policy reviews are numerous, frequently highlighting the significance of integrated ECEC systems in developing services and other areas of provision. This article looks back on three decades of EU policy initiatives and suggests that whilst key EC reviews have advocated integrated systems for member states, the Commission’s own fragmented approach has impeded the development of an effective framework at an EU level. It is argued that a tougher approach to improving ECEC, as suggested by recent developments, requires an integrated policy framework, unified targets and a strong single lead able to initiate and not just support actions at an EU level. 相似文献
35.
Bronwen Cowie Alister Jones Kathrin Otrel-Cass 《International Journal of Science and Mathematics Education》2011,9(2):347-366
International assessment data paints a complex picture of the engagement and achievement of New Zealand students in science.
New Zealand was second only to Finland in the top achievers group in PISA 2006, but it also has one of the widest spreads
in student achievement, particularly in relation to Mori and Pasifika students. Thus, the challenges faced by New Zealand
students, teachers, schools and policy makers resonate with those from elsewhere. New Zealand has a strong research and development
tradition around student ideas in science education, but recently, there has been increased recognition at the policy and
practice level of the importance of both engagement and participation linked to student identity. A sociocultural orientation
to identity has the potential to generate new ways of thinking about and responding to the challenge of engaging students
in science. This orientation involves considering classrooms as sites for students working through the development and performance
of science-related identities, or not. In this paper, three suggestions from long-term research studies are made for ways
forward in addressing the challenge of increasing student engagement and participation through an expansion of the possibilities
for students to express and develop science-related identities. These are reconceptualising assessment, the inclusion of student
funds of knowledge and strategies for breaching the classroom walls. 相似文献
36.
Anatomy curricula are becoming increasingly populated with blended learning resources, which utilize the increasing availability of educational technology. The educational literature postulates that the use of technology can support students in achieving greater learning outcomes by increasing engagement. This study attempts to investigate the dimensions of student engagement with technology-enhanced learning (TEL) resources as part of a medical program’s anatomy curriculum using exploratory factor analysis. A 25-item five-point Likert-based survey was administered to 192 first-year medical students, with three emergent factors discerned: satisfaction, goal setting and planning, and physical interaction. The three factors closely aligned with the existing literature and therefore additional nonparametric analysis was conducted that explored the levels of engagement across three custom-made anatomy TEL resources, including: (1) anatomy drawing screencasts; (2) an eBook; and (3) a massive open online course (MOOC). Usage data indicated that the most popular resource to be accessed across the cohort was the anatomy drawing screencasts via YouTube, with the MOOC being used least. Moreover, some evidence suggests that those students who utilized the MOOC were more engaged. Generally, however, no correlations were observed between the levels of engagement and TEL resource usage or assessment outcomes. The results from this study provide a clear insight into how students engage with TEL resources, but do not reveal any relationship between levels of engagement, usage, and assessment outcomes. 相似文献
37.
Query Expansion (QE) is one of the most important mechanisms in the information retrieval field. A typical short Internet query will go through a process of refinement to improve its retrieval power. Most of the existing QE techniques suffer from retrieval performance degradation due to imprecise choice of query’s additive terms in the QE process. In this paper, we introduce a novel automated QE mechanism. The new expansion process is guided by the semantics relations between the original query and the expanding words, in the context of the utilized corpus. Experimental results of our “controlled” query expansion, using the Arabic TREC-10 data, show a significant enhancement of recall and precision over current existing mechanisms in the field. 相似文献
38.
Mariya P. Ivancheva Rebecca Swartz Neil P. Morris Sukaina Walji Bronwen J. Swinnerton Taryn Coop 《British Journal of Sociology of Education》2020,41(5):608-625
AbstractThe advent of massive open online courses and online degrees offered via digital platforms has occurred in a climate of austerity. Public universities worldwide face challenges to expand their educational reach, while competing in international rankings, raising fees and generating third-stream income. Online forms of unbundled provision offering smaller flexible low-cost curricular units have promised to disrupt this system. Yet do these forms challenge existing hierarchies in higher education and the market logic that puts pressure on universities and public institutions at large in the neoliberal era? Based on fieldwork in South Africa, this article explores the perceptions of senior managers of public universities and of online programme management companies. Analysing their considerations around unbundled provision, we discuss two conflicting logics of higher education that actors in structurally different positions and in historically divergent institutions use to justify their involvement in public–private partnerships: the logic of capital and the logic of social relevance. 相似文献
39.
An evaluation of characteristics of environmental education practice in New Zealand schools 总被引：1，自引：1，他引：0
This paper reports on a national evaluation project that investigated characteristics of environmental education (EE) practice in New Zealand schools in 2002–2003. The research included a review of New Zealand and international environmental education literature, a survey of nearly 200 New Zealand schools and case studies of environmental education practice in eight schools. In this paper we describe and discuss key features of environmental education practice in New Zealand schools at the time of the research. We consider the rewards and challenges for teachers, students, schools and the wider school community arising from the schools’ implementation of this non‐compulsory curriculum subject. We conclude by considering what the findings told us about current EE practice and how these findings might inform a greater emphasis towards environmental education/education for sustainability in New Zealand schools at a time of national curriculum policy change. 相似文献
40.
Ultrasonography is a noninvasive imaging modality, and modern ultrasound machines are portable, inexpensive (relative to other imaging modalities), and user friendly. The aim of this study was to explore student perceptions of the use of ultrasound to teach “living anatomy”. A module utilizing transthoracic echocardiography was developed and presented to undergraduate medical, science, and dental students at a time they were learning cardiac anatomy as part of their curriculum. Relevant cardiac anatomy was explored on a student volunteer and images were projected in real‐time to all students via an AV projection system. Students were asked to complete a questionnaire about the learning experience and were given the opportunity to provide open feedback. The students' evaluations of this learning experience were very positive. They agreed or strongly agreed that it was an effective way to teach anatomy (90% medical; 77% dental; 100% science) and that it was incorporated in a way that promoted reinforcement of the lecture material (83% medical; 76% dental; 100% science). They agreed or strongly agreed with statements that the experience was innovative (93% medical; 92% dental; 100% science) and stimulated interest in the subject matter (86% medical; 75% dental; 96% science), and that they would like to see more modules, exploring other anatomical sites, incorporated into the curricula (83% medical; 72% dental; 100% science). We believe that ultrasound could be a useful tool, in conjunction with traditional teaching methods, to reinforce the learning of anatomy of a variety of different undergraduate student groups. Anat Sci Educ. © 2010 American Association of Anatomists. 相似文献