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1.
E. Poldner P.R.J. SimonsG. Wijngaards M.F. van der Schaaf 《Educational Research Review》2012,7(1):19-37
Reflective essays are a common way to develop higher education students’ reflection ability. Researchers frequently analyse reflective essays based on quantitative content analysis procedures (QCA). However, the quality criteria that should be met in QCA are not straightforward. This article aims to: (1) develop a framework of quality requirements for QCA; and (2) explore the extent to which QCA studies of students’ reflective essays meet these quality requirements. First, a methodological review of psychometric and edumetric criteria for QCA is conducted, resulting in a framework with required quality criteria. Second, 18 studies were selected in which QCA was used to analyse students’ reflective essays. These studies were scrutinised using the developed framework. The results showed that none of the selected studies met all requirements. It is concluded that QCA procedures for analysing students’ reflective essays need improvement and that the developed framework can be used to improve and evaluate these procedures. 相似文献
2.
Validity in quantitative content analysis 总被引：8，自引：0，他引：8
Rourke Liam Anderson Terry 《Educational technology research and development : ETR & D》2004,52(1):5-18
Over the past 15 years, educational technologists have been dabbling with a research technique known as quantitative content
analysis (QCA). Although it is characterized as a systematic and objective procedure for describing communication, readers
find insufficient evidence of either quality in published reports. In this paper, it is argued that QCA should be conceived
of as a form of testing and measurement. If this argument is successful, it becomes possible to frame many of the problems
associated with QCA studies under the well-articulated rubric of test validity. Two sets of procedures for developing the
validity of a QCA coding protocol are provided, (a) one for developing a protocol that is theoretically valid and (b) one
for establishing its validity empirically. The paper is concerned specifically with the use of QCA to study educational applications
of computer-mediated communication. 相似文献
3.
Including all learners: QCA's approach 总被引：1，自引：0，他引：1
Judith Wade 《British Journal of Special Education》1999,26(2):80-82
Judith Wade, QCA (Qualifications and Curriculum Authority) Principal Manager for Equal Opportunities and Access, outlines recent and future developments initiated by the QCA. She highlights the challenges faced by the QCA to encourage all staff to take into account all learners, including those with special educational needs. The points she makes are not only relevant to schools and LEAs (Local Education Authorities) but also to all community organisations and service providers. 相似文献
4.
本文的立意非常简单和明确,即数学命题的最基本规律.任何一个数学命题：其计算出来的结果都要符合“验根”的要求;即每道数学命题中,根据题设的要求得出的计算或推理结果,不能与题设条件相矛盾,否则,结果就不正确.这是数学的基本规律.@@在高斯的电通量定理中,高斯的电通量定理是根据库仑定律经二重积分推导出来的.无论是根据库仑定律还是高斯定理进行计算都能得出如下的计算或推理结果：一、两个点电荷不能相互靠近,否则其相互作用力理论上会达到无穷大,其相互作用的关系是与距离的平方成反比;二、线电荷与点电荷之间的距离也不能为零,否则也是相互间的作用力理论上会达到无穷大,其相互作用的关系是与距离的一次方成反比;三、点电荷与平面电荷的关系则是一个常数,即点电荷与平面电荷的作用关系与距离无关.这就产生了一个天大的矛盾：即,如果我们在平面电荷的平面上取一个点A,那么这个点A上的电荷就是明显的经典的点电荷,再经这个所取的点电荷A点,在平面电荷的平面上作一条直线BC,直线BC经过A点;那么这务直线BC在这个平面电荷的平面上,而在这条直线BC上的电荷则又是一条经典的线电荷.那么,通过刚才在平面电荷的平面上所取的点电荷的点A,作一条垂直于平面电荷的平面的直线AD,垂线AD与平面电荷的平面相交于A点.由此可得如下结果：平面电荷外的那个点电荷D点与平面上的无论是A点电荷,还是D点电荷与经过垂直点A点的平面电荷上的线电荷BC,都是不能相互靠近的,其作用的关系与距离的二次方或一次方成反比.也就是说当距离AD为零时,其中,D点电荷与A点电荷,或D点电荷与BC线电荷之间的作用力理论上会达到无穷大.这就形成了用高斯定理本身产生的自相矛盾的情况出现.由此充分说明高斯的电通量定理是谬误的.高斯是 相似文献
5.
Simplified analysis for reflective overpressure on walls of rectangle-section tunnel due to its inner-explosion 总被引：1，自引：0，他引：1
Based on the constructing thought of the displacement model of isoparametric finite element, an extended interpolating algorithm is deduced for calculating the overpressure history of an optional point on the walls of the rectangle-section tunnel under an optional point-explosion in its internal space. According to the working principle, the overpressure histories of all nodes on the walls of a tunnel with the equal width and height of 2 m, induced by a reference-charge explosion at each node in this tunnel's cross section, are computed using the LS-DYNA software, and then are gathered to establish a reference database, which makes it possible to set optionally the positions of the explosive and the overpressure-observed point. In addition, some variation factors of peak values and durations of overpressure on the walls, reflecting some changes on the charge weight and the sizes of width and height of the section, are included in this algorithm in order to simulate approximately the overpressure responses on the walls under the optional charge weight and cross-section size. Some example analyses indicate the rapidity and validity of this method, and therefore this will bring it a good prospect in engineering application. 相似文献
6.
The UK Qualifications and Curriculum Authority (QCA) documents for religious education indicate two distinct areas for study that may be characterised as teaching about the main faith traditions and tackling puzzling problems. This paper presents a detailed analysis of whole‐class interactive teaching and learning in one session in each of four classrooms. The analysis will present two sessions with younger pupils and two with older pupils. The sessions analysed will reflect the QCA distinctions. The mode of analysis employed focuses at the level of utterance on categories of utterance derived from studies of classroom talk in relation to learning intentions. In discussion we will describe the topography of the lessons and address two key issues, the distinctive features to these religious education sessions and the distinctions between types of lesson. 相似文献
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大学人力资源建设与教职聘任标准问题广受社会各界关注。当前中国大学教职聘任标准的制定
与出台由大学内外部多因素促成,定性比较分析方法探讨这一复杂情境具有独特优势。本文选取 60所不
同类型大学作为研究案例,运用模糊集定性比较分析方法展开系统探讨,寻找影响中国大学教职获得标准
的各种条件变量组合。研究结果表明,中国大学教职获得标准趋同化现象严重,教职聘任可分为“优质匹配
型”“匹配失衡型”和“中度匹配型”三种类型。国内知名研究型大学可考虑进一步提升人才聘任待遇用以吸
纳顶尖人才;地方大学应避免盲目跟随研究型大学的聘任标准,制定契合自身实际情况的教职招聘策略;政
府管理部门应探索制定以市场调节为主、宏观调控为辅的人才流动政策,以有利于中国高校的整体性发展。 相似文献
10.
程智宾江吉彬 《福建工程学院学报》2021,(3):242-246
针对电动自行车充电管理难、安全性低的问题,设计一种基于窄带物联网(narrow band internetof things,NB-IoT)的电动自行车充电管理系统,以STM32F103C8为主要控制器,通过NB-IoT通信模块与服务器进行数据交互,结合区块链技术,提高消费支付和资金管理的安全性。经实际使用验证,该系统具有管理手段先进、使用方便、安全可靠等特点,已在多个学校和社区安装使用。 相似文献
11.
宋玉宏 《顺德职业技术学院学报》2005,3(2):18-22
针对电力线通信模拟前端滤波技术这一难点作了初步探讨,设计了滤除信道同步噪声的高通陷波器,以及采用新型元件第三代电流传送器CCIII构成带通滤波器.所提方案具有易集成化、负载特性好、工作稳定等特点,克服了一般有源滤波器工作频率不能做得很高的缺点,并通过PSpice仿真及灵敏度计算验证了该方案的正确性及可行性. 相似文献
12.
Bandara Bandaranayake 《The Australian Educational Researcher》2016,43(5):587-606
Applying qualitative comparative analysis (QCA), this study explores the configurations of conditions that contribute to the polarisation of high-performing and low-performing secondary schools in Victoria, Australia. It is argued that the success and failure of schools can be understood in terms of causal complexity, where one or several configurations of conditions can cause a given outcome. The study identifies that there is no single condition alone that produces high or low performance. However, the study does reveal the existence of multiple configurations or causal relations that tend to produce school success or school failure. Relative to the dataset considered in this study, three configurations related to success and almost twice that many configurations underpinning failure are identified. The polarisation of the high-performing and low-performing schools and persistent inequality are complex phenomena. This study presents QCA as a useful and alternative methodology for researchers to uncover such complex phenomena over and above large-scale quantitative and classical analysis. 相似文献
13.
由相对论速度变换式分析得出相对论质量和相对论动量变换式,在此基础上根据相对论力学方程推导出了两惯性系之间力的一般变换式,并据此变换式求解了运动点电荷对静止点电荷的电场力。 相似文献
14.
1 Ｉｎｔｒｏｄｕｃｔｉｏｎ Ｏｗｉｎｇｔｏｉｔｓｈｉｇｈｈｙｄｒｏｇｅｎ ｓｔｏｒａｇｅａｂｉｌｉｔｙ ,ｌｏｗｃｏｓｔａｎｄａｂｏｕｎｄｉｎｎａｔｕｒａｌｒｅｓｏｕｒｃｅｓ ,Ｍｇ ｂａｓｅｄａｌｌｏｙｂｅ ｃｏｍｅｓａｃｏｍｐｅｔｉｔｉｖｅｈｙｄｒｏｇｅｎ ｓｔｏｒａｇｅｍｅｄｉｕｍｗｈｉｃｈｃａｎｂｅｕｓｅｄｉｎＮｉ ＭＨｂａｔｔｅｒｙａｎｄｆｕｅｌｃｅｌｌ.Ｔｈｅｅｌｅｃ ｔｒｏｃｈｅｍｉｃａｌｍｅｔｈｏｄｈａｓｂｅｅｎｕｓｅｄｉｎｔｈｅｓｔｕｄｙｏｆｈｙ ｄｒｏｇｅｎａｔｉｏｎ/ｄｅｈｙｄｒｏｇｅ… 相似文献
15.
本文采用基于电势多极展开的电像法求解像电荷的大小、位置和系统在空间中的电势．计算了带电导体椭球与点电荷之间的相互作用力． 相似文献
16.
Keith Humphreys 《British Journal of Special Education》2001,28(3):123-125
EQUALS is a national organisation that has a major concern for the development of a curriculum that promotes the inclusion of all pupils. The EQUALS movement has, in the past, published its own materials in support of curriculum development for pupils with learning difficulties. In this article, Keith Humphreys, EQUALS' quality assurance manager, provides a response to the publication of the QCA/DfEE guidelines. He discusses EQUALS' response to these guidelines and proposes a way forward for schools already using EQUALS materials. While acknowledging that the implementation of the QCA/DfEE guidelines will lead to an evolution of good practice, he articulates a concern that staff should continue to appreciate and value their own development work. Keith Humphreys details the ways in which EQUALS intends to support this process of evolution in the future. 相似文献
17.
Rosie Turner-Bisset 《Education 3-13》2013,41(2):193-203
This article offers an analysis of recent development in primary education, in particular the prevailing climate of performativity and new initiatives on creativity. Since 1989 education has been dominated by the performativity discourse accompanied by the obsession with evidence: of children's learning; of teachers' performance; and of student teachers' ‘covering’ the standards. Recent initiatives would seem to signify a shift in official Government thinking on education and a move to embrace the creativity discourse. The commissioning of a national report on creativity and culture was an important first step. There was also the QCA's literature review of creativity, and the development of the QCA web site on creativity. More recently, we have seen the introduction of the new Primary National Strategy (PNS) via the DfES document Excellence and Enjoyment and Government support for creative partnerships: a programme aimed at developing creativity in learning and participation in cultural activities. This article argues that the new initiatives on creativity do not herald major change in primary education. It offers a critique of two significant texts: the Primary National Strategy and the QCA web site on creativity. It presents an alternative analysis of creativity and suggests ways forward to prevent creativity becoming hijacked by the performativity discourse. 相似文献
18.
刘云 《贵州教育学院学报》2008,24(6):7-10
计算了点电荷与介质球系统的电势,并根据其结果定量分析了极限条件下导体球表面的感应电荷和介质球极化电荷的分布规律及其表达式。对认识静电平衡的性质以及球体表面上的电荷的分布规律有比较重要的启示作用。 相似文献
19.
求解正负极化电荷在电介质面上分布区域是教和学中的难点 ,本文给出一个命题 ,不需要计算就可较简单地确定正负极化电荷在电介质面上的分布区域。 相似文献
20.
Much is known about what teachers, parents and educationalists think about the National Tests. But what do the children think? This article describes part of a research project, ‘Children's Perceptions of the National Tests’ (partially supported by the QCA), in which a team of researchers from the University of Cambridge Local Examinations Syndicate explored the user-friendliness of the national assessment materials. The article focuses on the KS2 Reading Comprehension tests and discusses salient features, identified by the children, of the stimuli and answer booklets. 相似文献