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Educational Research for Policy and Practice - Reporting on the results of a sequential mixed-methods study conducted in the Iranian higher education context, this paper addressed measures and... 相似文献
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Omid Noroozi Armin Weinberger Harm J.A. Biemans Martin Mulder Mohammad Chizari 《Educational Research Review》2012,7(2):79-106
Learning to argue is an essential objective in education; and online environments have been found to support the sharing, constructing, and representing of arguments in multiple formats for what has been termed Argumentation-Based Computer Supported Collaborative Learning (ABCSCL). The purpose of this review is to give an overview of research in the field of ABCSCL and to synthesize the findings. For this review, 108 publications (89 empirical studies and 19 conceptual papers) on ABCSCL research dating from 1995 through 2011 were studied to highlight the foci of the past 15 years. Building on Biggs’ (2003) model, the ABCSCL publications were systematically categorized with respect to student prerequisites, learning environment, processes, and outcomes. Based on the quantitative and qualitative findings, this paper concludes that ABCSCL environments should be designed in a systematic way that takes the variety of specific conditions for learning into account. It also offers suggestions for educational practice and future research. 相似文献
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Omid Noroozi Maria C. Busstra Martin Mulder Harm J. A. Biemans Hilde Tobi Anouk Geelen Pieter van’t Veer Mohammad Chizari 《Educational technology research and development : ETR & D》2012,60(2):193-221
This study used a sequential set-up to investigate the consecutive effects of timing of supportive information presentation
(information before vs. information during the learning task clusters) in interactive digital learning materials (IDLMs) and
type of collaboration (personal discussion vs. online discussion) in computer-supported collaborative learning (CSCL) on student
knowledge construction. Students (N = 87) were first randomly assigned to the two information presentation conditions to work individually on a case-based assignment
in IDLM. Students who received information during learning task clusters tended to show better results on knowledge construction
than those who received information only before each cluster. The students within the two separate information presentation
conditions were then randomly assigned to pairs to discuss the outcomes of their assignments under either the personal discussion
or online discussion condition in CSCL. When supportive information had been presented before each learning task cluster,
online discussion led to better results than personal discussion. When supportive information had been presented during the
learning task clusters, however, the online and personal discussion conditions had no differential effect on knowledge construction.
Online discussion in CSCL appeared to compensate for suboptimal timing of presentation of supportive information before the
learning task clusters in IDLM. 相似文献
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This article discusses two mechanisms through which understanding static mathematical concepts (basic and more advanced mathematical concepts) in terms of fictive motions or motion events enhance our understanding of these concepts. It is suggested that at least two mechanisms are involved in this enhancing process. The first mechanism enables us to employ both the motor system and the visual system as two contributing cognitive resources to process the static concept. When one representation of a mathematical concept is transformed into another representation, there is a shift in the mode of processing. This shift facilitates the process of employing new cognitive resources such as the motor and visual systems. The second mechanism, which is a special form of mental simulation, enables us to simulate the process of formation of the static concept, which, in turn, makes it easier for us to understand the structure and properties of the static concept. 相似文献
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ABSTRACTHafez’s tomb was constructed on the grave of the well-known Iranian poet in Shiraz, in the 1930s. The dome of this monument is made of copper metal and has been exposed to the urban environment for 80 years. In this study, corrosion mechanisms and conservation conditions of the metallic dome of the Hafez’s tomb are investigated by analytical methods including optical microscopy, ICP-MS, SEM-EDX, and X-ray diffraction. The results showed that the dome is constructed from many copper sheets that are hammered to shape the dome. The corrosion products formed on the surface of copper sheets include copper oxide and copper trihydroxichlorides. In fact, the corrosion mechanism occurring in the metallic dome consists of copper oxidation and redeposition of copper II products because of reaction with air pollutants. 相似文献
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Omid Payrow Shabani 《Religious education (Chicago, Ill.)》2013,108(3):332-346
The argument of this article is that the recent writing of Jürgen Habermas concerning the boundary of public reason offers the following advantages over the classic liberal proviso: (1) It releases religious citizens from an undue cognitive burden; (2) It distributes the cognitive burden of justification symmetrically across the citizenry; and (3) It offers a multidimensional concept of reason that becomes self-critically aware of its boundaries. 相似文献
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This paper deals with the problem of the instability regions of a free-free flexible jointed bipartite beam under the follower and transversal forces as a realistic simulation of a two-stage aerospace structure. The aim of this study is to analyze the effects of the characteristics of a flexible joint on the beam instability to use maximum bearable propulsion force. A parametric study is conducted to investigate the effects of the stiffness and the location of the joint on the critical follower force by the Ritz method and the Newmark method, then to research the vibrational properties of the structure. It has been shown that the nature of instability is quite unpredictable and dependent on the stiffness and the location of the joint. The increase of the follower force or the transversal force will increase the vibration of the model and consequently cause a destructive phenomenon in the control system of the aerospace structure. Furthermore, this paper introduces a new concept of the parametric approach to analyze the characteristics effects of a flexible two-stage aerospace structure joint design. 相似文献