• 대한지구과학교육학회지
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• 제5권1호
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• pp.124-133
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• 2012

Modern society requires people with practical knowledge that is able to recognize actual problems in the complex reality and solve the problems. Due to that reason, the 7th National Curriculum aims to basically cultivate ability adaptable to information-oriented global age by maximizing students' individuality and creativity. However, as existing education is hard to improve creativity, logical thinking, information processing skills, and problem-solving ability in the information-oriented age, self-directed learning is getting highlighted. Therefore, this study aimed to look into how learner-oriented IPER for self-directed learning and problem-based learning(PBL) in middle school science affected academic achievement of science and self-directed learning characteristics. As the results of the study are as follows. First, as the result of pre-and post-test to compare and analyze the effects of IPER instruction model and PBL instruction model on learners' academic achievement increase, it showed that the class with IPER instruction model was more effective. Second, as the result of pre-and post-test to compare and analyze the effects of IPER instruction model and PBL instruction model on self-directed learning characters, IPER was more effective than PBL overall, and among sub-areas, 'openness', 'self-concept', 'initiative', 'future-oriented self-understanding', and 'self-evaluation' were more effective in IPER while 'creativity' was more effective in PBL. However, among sub-areas 'responsibility' and 'learning enthusiasm' didn't show statistically significant difference. Third, the results of the post-survey to compare and analyze learners' perception regarding the application of IPER instruction model and PBL instruction model, the two models were positively affective. In addition, as the result of comparing the two models, IPER was more positive than PBL.

• 대한지구과학교육학회:학술대회논문집
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• 대한지구과학교육학회 2010년도 제4차 학술대회
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• pp.34-35
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• 2010

• 전자공학회논문지SC
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• 제41권6호
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• pp.61-66
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• 2004

최소한의 피폭선량으로 고품질의 영상진단정보를 제공하기 위하여 노후화 및 불량인 장비를 선량과 해상력을 이용하여 평가하며, 국내특수의료장비 법제화를 위한 실태파악을 토대로 국내실정에 맞는 기준치를 개발하는 것이 논문의 목적이다. 전국 29개병원에 설치되어 있는 혈관조영장비 46대를 대상으로 입사선량율(EER) 및 입력형광면조사선량(IPER)을ion chamber로 측정하였고, Burger Rose 팬텀을 사용하여 투시영상의 저대조도 해상력을 측정하였다. 현재 대학병원 및 종합병원에서 사용되는 혈관조영 장비의 현상태를 파악함으로써 장비의 노화정도를 예측하고 부적절한 장비의 사용제한을 목적으로 종합평가 결과의 통계치로1안(1)과 2안(2)으로 구분하여 기준안을 작성하였다. 해상력 및 선량으로 장비를 조사하였을 때, 91%의 혈관조영X-선 장치가 기준 이상의 성능을 갖추고 있었으며 기준 미달의 장치의 경우 병원에서 교체를 검토하고 있음을 확인할 수 있었다.