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김준태,권재술 한국교원대학교 과학교육연구소 1994 청람과학교육연구논총 Vol.4 No.1
This study tried to find the effect to the representation patterns of science concepts upon the momentum effect. The previous studies showed that the momentum effect is influenced by students' cognitive levels and the abstractness of test items. The representation patterns of science concepts are divided into 4 different types: quantitative and qualitative, verbal and image. The research method used in this study is time series design. The period is 50 days. The period is divided into "pre-test", "intervention-test", "post-test". Pre-test period is 5 days and in this period class instruction does not exist. Intervention-test period is 30 days and in this period class instruction exist. Post-test period is 15 days and in this period class instruction does not exist. The results showed longer momentum effect on the image-qualitative representation pattern than the other representation patterns. Qualitative concepts is formed better than quantitative. Momentum effects is not artifact but the essential characteristics of science study.
김준태,권재술 한국과학교육학회 1992 한국과학교육학회지 Vol.12 No.1
This study tried to find out the effect to types of test items upon the momentum effect. The previous studies showed that the momentum effect is influenced by students' congnitive levels and the abstractness of test items. In this study focused on the types of test items. The test items are divided into 4 different types quantitative and qualitative, verbal and image. The result showed that qualitative items showed a longer momentum effect than quantitative ones. The image items and verbal items did not show significant difference in the duration of momentum effect. The interpretation of this would need a careful psychological analysis. Anyhow, this result reconfirmed the existence of the momentum effect and showed that the study on the momentum effect could be a significant research paradigm.
다양한 작물로부터 분리한 탄저병균(Colletotrichum spp.)의살균제에 대한 반응
김준태,김흥태,민지영 한국식물병리학회 2006 식물병연구 Vol.12 No.1
This study has been conducted to investigate the responses of various isolates of four Colletotrichum species such as C. gloeosporioides, C. acutatum, C. coccodes, and C. dematium isolated from infected tissues of several crops to fungicides such as carbendazim, carbendazim+diethofencarb, four protective fungicides, and three ergosterol biosynthesis-inhibiting (EBI) fungicides. All the isolates of C. acutatum showed EC50 values in a range of 0.001-3.040 μg/ml against carbandazim, a benzimidazole fungicide. As for the response to carbendazim, the isolates of C. gloeosporioides obtained from pepper, apple, and strawberry were clearly divided into two groups, resistant or sensitive isolates. All the resistant isolates showed EC50 values above 1000 μg/ml, whereas the sensitive isolates had lower EC50 values than 0.550 μg/ml. The isolates of C. gloeosporioides exhibited a negative cross resistance between carbendazim and diethofencarb (a N-phenylcarbamate fungicide), but isolates of C. acutatum did not. Toward carbendazim, C. coccodes and C. dematium isolates showed a similar response to C. acutatum isolates and the sensitive isolates of C. gloeosporioides, respectively. As for response of protective fungicides, all the isolates of C. acutatum showed a more resistant reaction than all the isolates of C. gloeosporioides. However, there was no difference among 4 species of Colletotrichum against EBI fungicides.