Pragmatism, Pedagogy and Philosophy A Model of Thought and Action in Action in Primary Technology and Science Teacher Education

This article reports on one outcome from a three-year study with pre-service primary teachers at Goldsmiths' College, University of London. The purpose of the study was to evaluate the influence of participants' prior educational experience and beliefs about the relationship between design & technology (D&T) and science on their lesson planning for these subjects during school placements. Data from the study support a three-domain model of pre-service teachers' thinking and action. When operating within the pragmatic domain, participants are primarily concerned with survival in the classroom, resulting in short-term planning which may contradict their epistemological and curricular beliefs. In the pedagogical domain, the focus shifts from the pre-service teacher themselves and their immediate survival to the learning potential of the activities they plan. There is evidence that some participants have progressed to operating within a philosophical domain, leading to clasroom practice which reflects and re-conceptualises pre-service teachers' core beliefs about the nature of, and relationship between, D&T and science. This revised version was published online in July 2006 with corrections to the Cover Date.     

Enhancing Practicing Primary School Teachers' Pedagogical Content Knowledge in Technology

This paper describes the frameworks and cognitive tools that have been developed to enhance practising teachers' pedagogical content knowledge in primary school technology education. The frameworks evolved from our research that firstly examined existing teaching practices, secondly enhanced formative interactions and thirdly enhanced summative assessment strategies. The evidence gained over the three years demonstrated how the effective use of frameworks could be utilised to enhance teacher pedagogical content knowledge (PCK). How we see learning is of prime importance in examining the development of teacher pedagogical content knowledge. A sociocultural view of learning is taken where human mental processes are situated within their historical, cultural and institutional setting. In the research project we strongly emphasised the need for teachers to build a knowledge base for teaching technology. Critical aspects identified as enhancing PCK included: negotiated intervention, planning frameworks, reflection on case studies, workshops and support in classrooms, appropriate resources, teacher agreement meetings, portfolios of student work and summative profiles. The increased PCK resulted in: enhanced teacher knowledge about technology including the nature of technology, areas of technology and specific technological knowledge, changed pedagogical approaches, enhanced teacher student interaction, refinement of appropriate learning outcomes, critical decision making, improved teacher confidence, and enhanced student learning. Seven characteristics or features of pedagogical content knowledge that we believe are important for effective teaching and learning in technology are presented. This revised version was published online in July 2006 with corrections to the Cover Date.     

Perceptions of pre-service teachers on seismic risk and their implications for science education: a comparative study between Spain and Portugal

Abstract

This study investigated the importance given by two groups of pre-service teachers of primary education from Spain and Portugal to seismic risk in a framework of different natural risks, both in personal terms and as future teachers. A questionnaire was used for data collection. Some questions about the seismic phenomenon were also included. The sample groups consisted of 110 students from an institution in Spain and 121 from one in Portugal. Both institutions are in cities affected by the historic Lisbon earthquake of 1755. The results showed that the risk of forest fire was the first choice for classroom study in both cases. The Spanish group was also more focused on the importance of other risks like flood and drought. The Portuguese group showed a greater concern with seismic risk, frequently referring to their own historic earthquake of 1755. A few gaps in knowledge concerning earthquake prediction and comparing seismic risk in different regions of their own countries were also found. In accordance with the results, it is suggested that training courses for primary school teachers should include Disaster Risk Education in Science Education for a better understanding of the impact of various hazards and a greater concern with seismic risk due to its particular features, especially in regions where the seismic pattern is characterized by long seismic cycles with major earthquake episodes.     

跨越“中等收入陷阱”与构建消费主导型经济发展模式——中国特色社会主义消费理论的探究

社会主义市场经济条件下,居民个人消费与社会主义公有制相联系,体现了社会主义市场经济的性质。其一,消费是最大限度满足人们不断增长的物质、精神以及生态的需要。这也是推进改革和现代化建设的出发点和落脚点。其二,消费以实现共同富裕为目标。采取一部分人和一部分地区先富起来的政策;实行按劳分配为主、按生产要素分配相结合的方式,逐步实现共同富裕。其三,社会主义发展生产力是为了提高人民生活水平和质量,因此,消费水平和质量的提高是以发展生产为根本条件的。公平分配和统一市场是提高消费水平和质量的基本及重要条件。     

厂房屋面防水设计与施工中的一些问题

文章从厂房屋面的基层、找平层、保温层和防水层以及檐口泛水等厂房屋面的几个施工工序方面,从设计到施工到材料选用上提出了一些常见的质量问题以及处理这些问题的相应对策,为提高工业厂房屋面防水质量提供一些参考意见。     

大宗农产品供应链协调问题分析

大宗农产品供应链管理是实现我国农业现代化、产业化的有效途径。以大宗农产品供应链为研究对象,阐述了大宗农产品供应链失调的后果,通过对现阶段我国大宗农产品供应链管理失调的主要原因进行分析,提出促进我国大宗农产品供应链协调的可行性建议。     

增值税改革对企业劳动份额的作用机制——基于面板三重差分模型的实证研究

以中国工业企业数据为样本,从微观层面运用面板三重差分模型（DDD）对增值税转型的效果进行了测算,发现增值税转型显著降低了劳动份额,并且显著降低了政府份额。为了探索其内在机制,基于收入分配的视角,进一步分析发现增值税转型对劳动份额存在两方面的效果,一是增值税转型降低政府份额,政府份额下降有利于增加劳动份额。二是增值税转型加剧资本对劳动的替代。实证研究发现第二种效果大于第一种效果,最终降低了劳动报酬。研究补充了增值税改革的经验,为2015年营业税改增值税的政策评价提供了参考。     

论市场化运作条件下土地一级开发的价值取晦

土地一级开发的市场化运作应兼顾公平与效率。在招标选择一级开发企业时,应将土地取得与市政设施建设两项不同性质的内容区别开来,采取不同评价标准和管理模式,进而使一级开发实现公平与效率的结合。     

俄罗斯电动汽车发展现状及趋势

俄罗斯自1970年诞生第一辆纯电动汽车之后数十年,电动车研发与生产基本处于停滞状态。近几年,俄罗斯意识到节能、减排是未来汽车技术发展的主攻方向,其电动汽车产业发展逐渐开始升温。对俄罗斯电动汽车市场发展现状做了概括介绍,对政府出台的扶持政策、配套设施建设等方面进行了分析,展望了俄罗斯电动汽车未来发展前景。俄罗斯汽车制造企业,除研发生产混合动力汽车和纯电动汽车外,也积极同国外合作涉足燃料电池电动车的电池研发。2012年,俄罗斯交通部出台了《俄罗斯普及电动车发展规划》,进一步显示了俄罗斯政府发展电动车行业的决心。     

Effectiveness and safety of betrixaban extended prophylaxis for venous thromboembolism compared with standard-duration prophylaxis intervention in acute medically ill patients: a systematic literature review and network meta-analysis

Abstract

Aims: To determine the clinical effectiveness and safety of venous thromboembolism (VTE) prophylaxis using US- and Europe-approved anticoagulants relative to extended-duration VTE prophylaxis with betrixaban. Low molecular weight heparins (LMWHs), unfractionated heparin (UFH), fondaparinux sodium and placebo were each compared to betrixaban, as standard-duration VTE prophylaxis for hospitalized, non-surgical patients with acute medical illness at risk of VTE.

Materials and methods: A systematic literature review was conducted up to June 2019 to identify randomized controlled trials (RCTs) of VTE prophylaxis in hospitalized, non-surgical patients with acute medical illness at risk of VTE. Studies that reported the occurrence of VTE events (including death) and, where possible, major bleeding, from treatment initiation to 20–50?days thereafter were retrieved and extracted. A Bayesian fixed effect network meta-analysis was used to estimate efficacy and safety of betrixaban compared with standard-duration VTE prophylaxis.

Results: Seven RCTs were analyzed which compared betrixaban, LMWHs, UFH, fondaparinux sodium, or placebo. There were significantly higher odds (median odds [95% credible interval]) of VTE with LMWHs (1.38 [1.12–1.70]), UFH (1.60 [1.05–2.46]), and placebo (2.37 [1.55–3.66]) compared with betrixaban. There were significantly higher odds of VTE-related death with placebo (7.76 [2.14–34.40]) compared with betrixaban. No significant differences were observed for the odds of major bleeding with all comparators, VTE-related death with any active standard-duration VTE prophylaxis, or of VTE with fondaparinux sodium, compared with betrixaban.

Limitations and conclusions: In this indirect comparison, betrixaban was shown to be an effective regimen with relative benefits compared with LMWHs and UFH. This indicates that betrixaban could reduce the burden of VTE in at-risk hospitalized patients with acute medical illness who need extended prophylaxis, though without direct comparative evidence, stronger conclusions cannot be drawn.