• Journal of The Korean Association For Science Education
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• v.35 no.2
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• pp.217-229
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• 2015

In this study, we explored the development of scientific model through the social-construction process on "combustion." Students were 8th graders from one middle school class. Each student engaged in small group discussions three times and made a group model on combustion. Discourses between peers and teacher were videotaped, audiotaped, and transcribed. The results show that the small groups constructed an initial concept: 'Conditions of combustion', which they then evaluated and revised the initial concept through combustion experiment. Following the discussions, some small groups evaluated their model and made a revised model. Then, the small groups compared various models and constructed a scientific model through consensus within the small group and as a whole class. Finally, students kept revising their model to 'Burning needs oxygen.' This tells us that the social construction process of scientific model made a meaningful role to build scientific model through diverse discussion between the students and their teacher, although they have had some difficult process to reach the final consensus. The data also showed some group features: the members were open to other's ideas. They analyzed the differences between their own ideas from others and revised their model after the whole class discussion. Lastly, they showed the tendency to make a good use of teacher's guidance. This study implies the importance of having social interaction process for students to understand the scientific model and learn the nature of scientific inquiry in class.

• Management & Information Systems Review
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• v.29 no.1
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• pp.177-205
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• 2010

The major purpose of this study is to investigate the relationships between change management characteristics and implementation performance of ERP. In addition, this research examines the moderating effects of organization characteristics as contextual variables on the relationship between change management characteristics and implementation performance. For these purposes, a research model is developed based on the relevant literature reviews of ERP systems and change management theory. The data have been collected from the 148 enterprises which have implemented ERP systems at least one year ago. The respondents were person in charge of ERP system of each corporation. The results of this study are summarized as follows. Firstly, top management concern and support, consultant support goodness, education, and communication have positive influence upon internal performance. Secondly, consultant support goodness and education are positive influence upon external performance. Lastly, organization characteristics including formalization and centralization have partial moderating effect on the relationship between change management characteristics and implementation performance of ERP. From the analyses, this research have identified change management activities according to the organization structural contexts for the successful implementation of ERP.