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Babak Abedin Farhad Daneshgar John D’Ambra 《Education and Information Technologies》2011,16(3):227-244
By the proliferation of online courses, the social dimension of computer supported collaborative learning (CSCL) is becoming
more important than before. Research shows that communicative behavior adaptation to the computer medium is a critical issue
in CSCL social relationship development. Two dominant theories in the CSCL field, social information processing theory and
adaptive structuration theory, argue that individuals do not simply receive the technology passively but they adapt their
behavior to increase benefits from the technology. This paper develops an instrument in order to operationalize the notion
of individual’s communicative behavior adaptability in CSCL. Through an exploratory factor analysis performed on a small sample
of post graduate students of an online degree in an Australian university, three factors have been unveiled: (1) individual
perception of self-representation, (2) individual perception of compatibility, and (3) individual perception of the use of
computer technology. Identification of these factors is expected to facilitate understanding of individuals’ social behaviors
in CSCL environment, which in turn will guide the design of CSCL systems. In addition, the paper examines the relationships
between the extracted factors and four environmental factors: learner’s characteristics, course characteristics, instructor
characteristics, and technology characteristics. The results show that none of these characteristics strongly affect perception
of self-representation or perception of the use of computer technology. On the other hand, a strong relationship was found
between perception of compatibility and learner’s and course characteristics. The reliability as well as validity of the study
is examined and findings are discussed. These findings will provide further insights into the design process of CSCL systems. 相似文献
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Babak Abedin Farhad Daneshgar John D'Ambra 《British journal of educational technology : journal of the Council for Educational Technology》2012,43(3):385-397
While technological improvements of the computer supported collaborative learning (CSCL) have been substantial, its nontask social aspect has not received proportional attention. This study investigates the notion of nontask sociability of CSCL, and identifies its relationship with the students' learning outcomes using the case of an Australian postgraduate programme. Learning outcome is defined as a multiple variable consisting of pedagogical affect, student's interest and perceived learning. Five items were identified for operationalising the nontask sociability. These are ‘finding help’, ‘sense of appealing’, ‘sense of boringness’, ‘sense of interactivity’ and ‘sense of frustration’. In addition, a strong relationship was revealed between nontask sociability and learning outcomes which implies that further attention needs to be given to the nontask aspect of the CSCL interactions. Theoretical and practical implications of the findings are then discussed. 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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Recognizing that empirical research into classroom dialogue has been conducted for about 40?years, a review is reported of 225 studies published between 1972 and 2011. The studies were identified through systematic search of electronic databases and scrutiny of publication reference lists. They focus on classroom dialogue in primary and secondary classrooms, covering the full age range of compulsory schooling. The methods of data collection and analysis used in the studies are described and discussed, with changes and continuities over time highlighted. Study results are then summarized and integrated to present a succinct picture of what is currently known and where future research might profitably be directed. One key message is that much more is known about how classroom dialogue is organized than about whether certain modes of organization are more beneficial than others. Moreover, epistemological and methodological change may be required if the situation is to be remedied. 相似文献
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An efficient hybrid evolutionary optimization algorithm based on PSO and SA for clustering 总被引：4，自引：0，他引：4
The K-means algorithm is one of the most popular techniques in clustering. Nevertheless, the performance of the K- means algorithm depends highly on initial cluster centers and converges to local minima. This paper proposes a hybrid evolutionary programming based clustering algorithm, called PSO-SA, by combining particle swarm optimization （PSO） and simulated annealing （SA）. The basic idea is to search around the global solution by SA and to increase the information exchange among particles using a mutation operator to escape local optima. Three datasets, Iris, Wisconsin Breast Cancer, and Ripley＇s Glass, have been considered to show the effectiveness of the proposed clustering algorithm in providing optimal clusters. The simulation results show that the PSO-SA clustering algorithm not only has a better response but also converges more quickly than the K-means, PSO, and SA algorithms. 相似文献
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Berry Billingsley Manzoorul Abedin Mehdi Nassaji 《British Educational Research Journal》2020,46(1):177-204
This article describes the development of a questionnaire to discover primary school students’ perceptions of science, religion and the relationships between them on a range of topics that are known as Big Questions. The questionnaire was administered in 16 primary schools in England with over 750 students aged 10–11. The findings indicate that students in this age group have begun to consider how science and religion relate and that while there is a diversity of positions, a significant proportion perceived science and religion to conflict. Analysis of responses also indicated that primary school students’ epistemic insight was limited in relation to their understanding of the nature of science and, in particular, the idea that science has limitations. The basis and potential consequences of such views are considered and recommendations for teaching practice are presented, together with ideas for future research. It is anticipated that the study will inform teachers and curriculum planners developing approaches and guidance materials in science and religious education. 相似文献
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