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1
Group work as a strategy for attribution retraining in the Asian educational context of Singapore

Caroline Koh 서울대학교 교육연구소 2008 Asia Pacific Education Review Vol.9 No.2
The aim of this study is to investigate the effectiveness of group work as a strategy for attribution retraining and improving students' motivational styles. Students were first categorised into one of three motivational styles: learned helplessness, self-worth motivation and mastery orientation. In the intervention procedure, selected students from each of these three categories were subjected to an intervention procedure requiring the students to work in groups, with the emphasis on personal effort as the major contributor to group success. Post-intervention assessment of motivation showed an improvement in the motivation of self-worth motivated students although there was generally a decrease in mastery orientation amongst students in both the control as well as the experimental groups.
2
Electrical and electrochemical migration characteristics of Ag/Cu nanopaste patterns.

Koh, Minkwan,Kim, Kwang-Seok,Park, Bum-Geun,Jung, Kwang-Ho,Lee, Caroline S,Choa, Yong-Ho,Jeong, Myung Yung,Jung, Seung-Boo American Scientific Publishers 2014 Journal of nanoscience and nanotechnology Vol.14 No.12
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<P>Since direct printing technology has developed intensively, low-cost fabrication and reliability have become critical challenges for mass production of printed electronic devices. The silver/copper (Ag/Cu) nanopaste was manufactured by Ag nanopaste mixed with different proportions of Cu nanoparticles ranging from 0 to 5 vol.% in order to investigate the influences of Cu content on the electrical properties and electrochemical migration (ECM) characteristics. The patterns were constructed on a glass wafer via screen printing with the Ag/Cu nanopaste. They were then annealed through debinding for 30 min in air followed by sintering for 30 min in a hydrogen atmosphere at various temperatures (150, 200, 250, and 300 degrees C). The electrical resistivity of printed patterns that were sintered at 150 degrees C grew with increases in the percentage of Cu content in the Ag/Cu nanopaste, while printed patterns that were sintered at 300 degrees C show similar electrical resistivity values of around 2-3 μω cm regardless of Cu content. The ECM characteristics of the printed patterns were evaluated by performing a water drop test. The printed patterns that were sintered at higher temperatures showed longer ECM times. At 300 degrees C, the ECM time was considerably lengthened when the Cu content was over 2 vol.%, and the 5 vol.% Cu pattern showed the longest ECM time of 305 s, which was around 1.65 times that of the Ag pattern.</P>
3
PHENOMENOGRAPHIC STUDY OF VISUAL COMMUNICATION STUDENTS` EXPERIENCES OF DESIGN RESEARCH

Jesvin Puay-Hwa Yeo,Caroline Koh,Stefanie Yen Leng Chye 한국디자인학회 2015 한국디자인학회 학술발표대회 논문집 Vol.2015 No.10
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Literature reviews indicate that research traditions in the design field are still unchartered. Development of research cultures in design schools can be confusing due to the currently formative of design research. This study therefore, is motivated to understand the nature of design research from the fundamental levels. This study uses discursive phenomenography as the basis of its research design, to identify and describe thirty undergraduate students’ experiences and conceptions of design research. Four qualitatively different conceptions of design research were identified and described to provide an understanding of current perceptions of research culture in the area of visual communication design.