Relationship between science knowledge levels and beliefs toward science instruction held by preservice elementary teachers

Aspects of science background knowledge and attitudes toward teaching science were examined among preservice elementary teachers. The results indicated a low level of science knowledge, a negative relationship between science knowledge and attitude toward teaching science, and a marked lack of confidence toward teaching science among the prospective teachers. Some interesting paradoxes were also found. Recommendations concerning preservice preparation, inclusion of academic science coursework, and collaborative efforts between college departments are offered.     

金属烤瓷修复体602例临床分析

目的 通过对金属烤瓷修复体的追踪检查，总结修复成功的关键要素。方法 常规牙体制备、取印模、灌模、制作暂时冠、比色、试戴、调He、粘固等系列步骤，对602例1512个牙进行金属烤瓷冠修复。结果 通过5个月至5年5个月的追踪检查，发现 其中32个修复体有瓷裂纹或瓷折裂现象(2．1％)，18个修复体边缘不太密合(1．19％)，8个修复体龈缘金属显露(0．5％)，12个修复体发生龈缘炎或龈萎缩(0．75％)，4个修复体发生牙髓炎(0．25％)，10个修复体有食物嵌塞，24个修复体色调、彩度、明度出现偏差。均未见牙颈部继发龋，松动脱落现象。结论 选择适合的基牙，采用正确的备牙方式，合理的颈缘肩台设计，准确的邻接关系，细致的比色与调He，及时制作暂时冠，能使金属烤瓷修复体取得满意的临床效果。     

Immersion,Reflection, Failure: Teaching Graduate Students to Teach Writing Online

ABSTRACT

A common challenge facing those who prepare graduate students to teach writing online is the need to help those students connect online writing instruction (OWI) theory with their classroom practice. The authors present how graduate students are prepared to teach writing online at three universities and then synthesize those approaches to highlight three principles that can guide effective OWI preparation for graduate students in any program: immersion, reflection, and failure.     

The preparation of cognitively agile principals for turnaround schools: a leadership preparation programme study

The purpose of this study was to examine the ability of two educational leadership university programmes to improve the cognitive agility of their graduates. The research looked to discover whether the aspiring principals exited the programmes with an increased ability to employ cognitive agility – the ability to use the multiple thinking skills of systems thinking, reflecting, and reframing – when engaged in their professional work and solving problems. Both Masters programmes were in School Leadership, offered through the same university department and following the same core curriculum leading to Level 1 educational leadership certification. The results indicate that of the two programmes studied, the Principal Rapid Orientation and Preparation in Educational Leadership (PROPEL) programme, designed to prepare leaders for turnaround schools, produced more cognitively agile graduates than the traditional Master’s programme. The mediating variables of participants’ years of experience and budget responsibility increased the level of cognitive agility of both programme’s graduates.     

纳米氧化铁的制备与展望

纳米氧化铁的制备方法有水热法、强迫水解法、凝胶-溶胶法、胶体化学法、水溶胶-萃取法、化学气相沉积法和激光热分解法等。通过分析比较各种纳米氧化铁的制备方法,提出了纳米氧化铁制备应向低成本、粒径可控、粒子均匀的方向发展。     

阴离子型封闭聚氨酯聚电解质的制备

以甲苯二异氰酸酯、聚酯多元醇、扩链剂、封闭剂，通过丁酮法合成了阴离子水性聚氨酯电泳涂料。实验结果表明，NCO基团含量越高，漆膜硬度越高；亲水性扩链剂用量越多，乳液粒径越小，粘度越大，耐水性越差；当三乙胺的中和程度为0．75时，漆膜的综合性能最优。本实验用丁酮肟作为封端剂，漆膜性能得到很大的改善。     

谈对投资提取减值准备的会计处理

按成本与市价孰低的原则计提短期投资跌价准备以及短期跌价准备的冲回,出售短期投资时短期跌价准备的会计处理;有市价和无市价的长期投资是否计提减值准备的判断以及如何计提长期投资减值准备、长期投资减值准备的冲回和出售长期投资时长期投资减值准备的会计处理。     

浅析半夏的炮制方法

半夏是中药中最早记载的炮制品种之一,而且随时代的变迁炮制方法有所发展.现将目前市场上半夏的三个主要炮制品种清半夏、姜半夏、法半夏的历代炮制方法进行总结、评价,以促进半夏炮制工艺水平的进一步提高.     

Using quality enhancement processes to achieve sustainable development and support for sessional staff

Abstract

Consistent with quality enhancement, we report on how we used a continuous improvement cycle to formalise and embed an academic development and support programme for our School’s sessional staff. Key factors in establishing and maintaining the programme included: local change agents supported initially by institutional project funding; School support for key academic and administrative roles; timely access to reports and tools from nationally-funded projects and sessional staff input. Reviewing our approach against national standards highlighted ongoing actions while collaboration with academic developers is critical for advancing our understanding and reviewing our approaches in our continuously changing context.     

试论我国特殊教育师资培养中的几个争议问题

随着社会变迁和特殊教育的发展,我国的特殊教育师资培养在观念、体系、目标、课程设置等方面出现了一些与时代发展不同步的地方,并由此产生了一些有争议的问题。本文在简单回顾我国特殊教育师资培养发展历史的基础上,对目前关于特殊教育师资培养体系、培养模式、培养层次上的三个争议问题做出分析。作者认为,目前我国特殊教育师资培养应逐渐倾向于在普通师范院校和综合性大学中进行,培养模式应以不分类为主,培养层次也应由过去的中师提高到大学本科水平及本科以上水平。