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신재생에너지 발전원을 고려한 발전기 예방정비계획수립에 관한 연구
이연찬(Yeonchan Lee),오웅진(Ungjin Oh),최재석(Jaeseok Choi),정명훈(Myeonghoon Jung) 대한전기학회 2018 전기학회논문지 Vol.67 No.5
The purpose of this paper is to establish a new optimum Generator Maintenance Scheduling(GMS) considering renewable energy generator. In this paper, the total renewable energy generation is estimated using hourly capacity factor of renewable energy generator. The GMS was optimized with the objective function of maximizing the minimum reserve rate, minimizing the probabilistic production cost, minimizing the loss of load expectation, and minimizing CO₂ emissions. In the case study of this paper, GMS considering renewable energy and GMS not considering renewable energy are shown by each objective function. And it shows scenarios of the reliability, the environmental and economical factors when two nuclear power plants inputted and ten coal thermal power plants shut downed respectively.
배려와 소통을 추구하는 수학교사의 전문성 신장 경험에 관한 질적 사례 연구
전영국,정명훈,신향근 부산대학교 과학교육연구소 2016 교사교육연구 Vol.55 No.2
The aim of this paper was to explore and understand a math teacher’s experiences of taking diverse teacher training programs in order to promote students’ learning math and growing up as a professional in-service teacher. In-depth interviews were conducted twice between September and October in 2013 with 1 in-service teacher who had more than 20 years of teaching math. The case study highlights her passion and caring for those students who are often seen as ‘off the learning track’ due to accumulated deficit of learning. Her larger aspects of such efforts illustrates deep concerns towards a better math education based on listening to her students’ voices and complementing learning deficiencies with her own team-based teaching strategies. This portrait study depicts her motivation of becoming ended up with adopting a community of learning model in her math class, her ways of caring the students who needed complementary learning, and her fulfillment felt during math teaching.