工程图样第一角画法和第三角画法的异同分析

产品的图样在国际上通常的画法有第一角和第三角画法两种,茶文通过对这两种画法的分析,对二者的异同进行了详细的对比,提出了这两种画法的近似转换方法,为阅读图纸提供参考依据。     

Cauchy核中多复变微分方程自回归线性解初值问题

研究Cauchy核中多复变微分方程自回归线性解初值问题,为物理控制和生物医学演化等数学模型的构建提供数学基础。特别在高温冷却下的温度场有限元分析控制中具有重要的控制应用价值,采用非线性微分方程解分析的方法,通过对方程的多个逼近特征解进行分析,提取出所有解的特征,从而求解稳定解,此方法在多解相关性强的情况下具有较好的效果。在两个状态时滞向量的Cauchy核中求解多复变微分方程泛函,得到自回归线性解初值的最小正特征带状的连接权,根据Cauchy核中多复变微分方程泛函,得到Cauchy核最优解和Cauchy核最优边界,通过证明得到Cauchy核中多复变微分方程的自回归线性初值是连续收敛和渐进稳定的,且在闭环控制性能曲面上至少有一个稳定解。分析结果有利于提高高温冷却下的温度场有限元分析控制性能。     

对安徽高等教育强省建设的若干思考

高等教育强省的内涵具有"名词"、"动词"、"动词+名词匹配"三重意义的理解,内涵意蕴不同,则高等教育强省的参照系也是多维的。自2010年安徽省正式推进高等教育强省建设方略、实施"双百"发展方针以来,普通高校数、在校普通本专科生数等指标名列前十强,毛入学率已超全国均值,初步成效明显。今后,重任在肩的安徽高等教育强省建设至少应在以下三大领域发力:顶层设计——进一步旗帜鲜明、大张旗鼓地彰显省域应用性高等教育体系;长远规划——以高等教育强省建设为龙头,引领教育现代化建设目标的基本实现;近期行动——以地方高水平大学分类推进为突破口,强力推进高教强省建设。     

中能重离子碰撞中末态核碎片的各向异性分布

在多源理想气体模型的框架内,用解析和蒙特卡洛两种方法计算分析了中能重离子碰撞中末态核碎片的方位角分布和椭圆流对横动量的依赖关系,并由此分析了末态核碎片的各向异性分布特征。对计算结果与同位旋依赖的的量子分子动力学(ISQMD)模型的计算结果进行了比较,发现二者基本符合。     

溶胶凝胶法制备NiZn铁氧体的性能研究

通过溶胶凝胶法制备NixZn1-xFe2O4(x=0.2,0.4,0.6,0.8)铁氧体粉体.XRD显示制备的样品具有良好的尖晶石结构.研究了其磁性能比如密度、起始磁导率、Q值和截止频率.     

青海省登山体育旅游产业评价指标体系构建初探

采用文献资料法、专家访谈法、问卷调查法、AHP法和数理统计法,对青海省登山体育旅游产业概念和相关指标筛选的原则和方法进行了探讨,并以此为基础初步构建了一套三层共89个评价指标的青海省登山体育旅游产业综合评价指标体系,以资参考。     

Professionalisation policies in the ECEC field: trends and tensions in the Italian context

In recent times, a growing consensus has emerged, among researchers and policy-makers, that a well-educated, competent and adequately supported workforce is crucial for the quality of early childhood education and care (ECEC). Despite governmental initiatives aimed to enhance the professional preparation and continuing development of early years practitioners being high on the political agenda of many EU member states, very few studies are analysing professionalisation policy developments and their implications within the national contexts of ECEC. Against this background, the article describes the key features of ECEC policies in Italy and their current trends by focussing specifically on the professionalisation of early childhood practitioners working across 0–3 and 3–6 services. Drawing on the data collected from documentary sources and interviews with key informants, this paper will critically review policy discourses as well as recurring themes and tensions arising from the academic and political debate. The findings from our analysis highlight that the increasing discontinuity characterising professionalisation initiatives across the 0–3 and 3–6 sector might lead to widening the gap among professionals working in such services. The risks that are associated with this trend are, on the one side, to devalue the educational role of 0–3 services and, on the other, to produce the schoolification of educational practices in 3–6 services. In addition, our analysis identified inconsistencies between initial and continuing professional development policies, which are progressively creating a dichotomy between initial and in-service training. The consequences of this process might produce, on the long term, the fragmentation of the ECEC system across public and private not-for-profit provision with the subsequent risk of impoverishing the local culture of childhood on which the Italian ECEC system has traditionally built its strength.     

Voice over distance: a case of podcasting for learning in online teacher education

This paper reports on a case study of an online pre-service teacher education course in a New Zealand university aimed at exploring the potential of student-generated podcasts as a form of interactive formative assessment at a distance. The study was part of a wider two-year funded project with the overall goal of documenting, developing, and disseminating effective and innovative e-learning practice. Findings from lecturer and tutor interviews, student focus group (FG) discussion, and course evaluations indicate that the podcasting task provided opportunities for the course lecturer, tutors, and students to learn and share ideas with one another. The experience empowered students to develop the skills and confidence to initiate more independent inquiry into technologies to support their pedagogical purposes. The study contributes to a better understanding of the skills, dispositions, and knowledge needed to prepare teacher candidates for teaching-learning contexts where information and communication technologies are increasingly pivotal.     

Talking Together,Learning Together: The Story of English PGCE Student Teachers’ Adventures in Classics

This article reports on the first two phases of a project to promote the classics through English at Key Stage 3, a scion of the Cambridge Schools Classics Project. We discuss the primary importance of speaking and listening in the English classroom both for the individual and the collective, and reflect on the power and importance of using classic tales in English as a means of promoting good-quality oracy. We comment on the precarious position of both oracy and story in the 2014 national curriculum. We report on the impact of a project during which student teachers were introduced to classical oral storytelling and encouraged to use it in their teaching. Findings suggest that the student teachers recognised oracy and storytelling as fundamental to their developing pedagogy and that they saw the need to promote oracy.     

“What would you like me to do? Lie to you?” Teacher education responsibilities to LGBTI students

The experiences of lesbian, gay, trans (The use of trans with an asterisk avoids the use of transsexual or transgender and promotes recognition of the inadequacy of such labels), bisexual and intersex (LGBTI) student teachers were recently investigated at a New Zealand faculty of education. Student teachers studying in early childhood education and care, primary and secondary initial teacher education (ITE) were asked about their perceptions of LGBTI visibility and inclusion. Methods used were online questionnaires, focus groups and individual interviews. While the study encompassed all aspects of the ITE programme, this work uses one specific question about practicum from the questionnaire, and findings related to practicum and teaching from the focus groups and individual interviews. In this article, the experiences of LGBTI (those who identified as non-heterosexual) student teachers and “straight” (those who identified as heterosexual) are discussed. Findings suggest that both faculty and practicum settings are heteronormative and indicate that LGBTI student teachers felt uncertain about their safety. Both LGBTI and straight students felt they had not been given adequate preparation to manage the complexities of diverse sexualities on practicum or in their future teaching. We argue that addressing heteronormativity in ITE will better prepare student teachers for the rich diversity of students and families they will encounter in their teaching.