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SCORM 기반의 학습자 수준별 학습 시스템에 대한 연구
신종우(Jongwoo Shin),강석훈(Seokhoon Kang) 한국정보과학회 2003 한국정보과학회 학술발표논문집 Vol.30 No.2Ⅰ
기존의 LMS(Learning Management System)는 언제 어디서나 교육이 가능하다는 온라인 교육의 장점에도 불구하고 학습자의 요구와 수준에 무관하게 학습과 관련한 컨텐츠들이 획일적으로 구성됨으로써, 학습자의 요구를 만족시키지 못하고 있다. 이에 본 논문에서는 학습자 수준을 고려하여 학습에 필요한 학습 컨텐츠를 효율적으로 개발하고, 학습자의 수준에 부합되는 컨텐츠를 제공하기 위하여 L3S(Learner Level Learning System) 시스템을 구현하였다. 학습자의 수준에 맞는 컨텐츠 제공에는 SCORM에서 제안하는 메타데이터를 이용하였으며, 저작자는 메타데이터 생성기를 통하여 학습에 필요한 학습 객체의 난이도를 지정 가능하다. 또한, 웹 브라우저를 통해 LMS에 접근한 학습자는 난이도 지정과 검색을 통하여 수준에 맞는 학습 컨텐츠를 제공함을 목적으로 한다.
가정용 스털링엔진 열병합발전시스템의 성능 특성에 관한 연구
최재준(Jaejoon Choi),박병식(Byungsik Park),정대헌(Daeheon Jung),김혁주(Hyouckju Kim),강석훈(Seokhoon Kang),임용훈(Yonghoon Im),송대섭(Daesup Song) 대한설비공학회 2010 대한설비공학회 학술발표대회논문집 Vol.2010 No.11
The unpredicted worldwide oil price makes the energy efficiency technology be more important than any other period. The small cogeneration system is one of the most representative technology among the energy efficiency technologies. Recently, the household cogeneration system has been the center object of attention because of the loss of power transmission and the reasonable energy consumption policy relative to the household (condensing) boiler producing heat only. Two cogeneration systems based on Stirling engine as primary mover which can produce 1㎾ of electrical output were investigated from various aspects. The electrical efficiency and thermal efficiency of the systems were measured. The experiment was executed at an independent Stirling engine mode, an independent secondary burner mode, and a combined mode. The emission and noise characteristics were also analyzed and compared with each other. The one cogeneration system was superior to the other in the efficiency of electrical power.
가정용 스털링엔진 및 가스엔진 열병합발전시스템의 성능특성에 관한 연구
최재준(Jaejoon Choi),박병식(Byungsik Park),정대헌(Daeheon Jung),김혁주(Hyouckju Kim),강석훈(Seokhoon Kang),임용훈(Yonghoon Im),송대섭(Daesup Song) 대한설비공학회 2010 대한설비공학회 학술발표대회논문집 Vol.2010 No.6
The unpredicted worldwide oil price makes the energy efficiency technology be more important than any other period. The small cogeneration system is one of the most representative technology among the energy efficiency technologies. Recently, the household cogeneration system has been the center object of attention because of the loss of power transmission and the reasonable energy consumption relative to the household (condensing) boiler producing heat only. A tiny gas-fueled internal combustion engine cogeneration system and two cogeneration systems based on Stirling engine as primary mover which can produce 1㎾ of electrical output were investigated from various aspects. The electrical efficiency and thermal efficiency of the systems were measured. The emission and noise characteristics were also analyzed and compared with each other. The cogeneration system based on internal combustion reciprocating engine was superior to the others in the efficiency of electrical power but was inferior in the noise and vibration level.