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강지훈,조영환,박천수,Kang, Ji-Hoon,Cho, Young-Hwan,Park, Cheon-Shu 한국정보교육학회 2001 정보교육학회논문지 Vol.4 No.2
Hypermedia documents include structural information for their documents There have been researches on storing and searching hypermedia documents using the structural information of the documents. For the purpose of presenting hypermedia documents, however, only a few models have been proposed. In this paper, we propose a new object-oriented model based on the structural information of HyTime documents for storing and also presenting efficiently the documents. For this modeling, we consider an application of HyTime, a system for a news-on-demand service that provides news customized by user requests. Our modeling can be applied to several Hypermedia application areas, like as customized web-based instructions and digital libraries as well as news-on-demand services.
학령기 아동의 신체활동 증진에 대한 학부모 인식과 요구도 조사
강지훈 한국스포츠학회 2018 한국스포츠학회지 Vol.16 No.2
이 연구는 학령기 아동의 신체활동 증진을 위한 기초자료 제공을 목적으로 아동의 신체활동 증진을 위한 부모의 요구와 인식을 알아보았다. 연구대상은 학령기 아동의 학부모가 참여하였으며, 조사도구와 자료처리 및 절차는 다음과 같이 진행하였다. 먼저 개방형 질문지를 통하여 학부모의 신체활동 증진 요인과 및 요구 요인을 수집하였다. 이후 수집 된 개방형 질문 자료는 귀납적 범주분석을 실시하였다. 분석결과에 따르면, 신체활동 증진요인에 대한 개방형 반응은 총 173개로 나타났으며, 직접적 신체활동, 생활습관 개선, 환경변화, 운동정보, 동기부여 순으로 5개의 일반영역 주제 로 범주화되었다. 신체활동 증진을 위한 요구에 대한 개방형 반응은 총 159개로 나타났으며, 운동프로그램, 대중매체 관리, 생활조절, 운동제반교육 순으로 4개의 일반영역 주제로 범주화되었다. 본 연구를 통해 아동의 신체활동에 부모 역 할이 강조될 수 있다는 것을 재확인할 수 있었고, 향후 아동의 신체활동 증진을 위한 프로그램 개발시 본 연구에서 도출 된 부모의 인식과 요구도를 포함시킬 필요성을 시사하고 있다. The study looked at parents ' needs and perceptions to improve children's physical activities with the aim of providing basic data for improving physical activity in school children. The survey tools, data processing and procedures were carried out as follows : Factors for promoting physical activities of parents and their needs were collected through open questionnaire. An inductive category analysis was performed on the collected open question data. According to the analysis, the open response to physical activity promotion factors totaled 173, with 5 categorized by direct physical activity, lifestyle improvement, environmental change, exercise information, and motivation. There were a total of 159 open responses to the need for physical activity, categorized into 4 topics, in order of exercise program, media management, lifestyle control and general education of exercise.
강지훈,장현철,최정미,현재영,석중현 대한금속·재료학회 2014 대한금속·재료학회지 Vol.52 No.1
The replacement for indium tin oxide (ITO) in electronic displays should have comparable optical transmittance and electrical conductivity while being easy to source and manufacture. However, novel materials such as singlewalled carbon nanotubes (SWCNTs) and reduced graphene oxides (RGOs) are incapable of addressing these challenges. We demonstrate a simple method to fabricate good transparent conductive films (TCFs) by combining and leveraging the superior optical transparency of RGOs and the excellent electrical conductivity of SWCNTs. This method affords thin multilayers of SWCNTs and RGOs with excellent optical and electrical properties because these properties are correlated with spraying time and the amount of SWCNTs or RGOs. In general, transmittance is advantageous to RGO as conductance is to CNTs. With a view to finding good TCFs with reduced sheet resistance, but with little sacrifice of transmittance, it is natural to explore the combination of CNT and RGO. The sandwiched multilayer of SWCNTs and RGOs exhibited a low sheet resistance of 214.2 Ω/sq, which was comparable to that of SWCNTs, and a transmittance of 60% at a wavelength of 550 nm. To further reduce the sheet resistance and improve the transparency of the multilayer TCFs, Au doping was carried out. The doping, in combination with controlled spraying of the amount of SWCNTs and RGOs, led to multilayers with resistance/transmittance combinations of 141.3 Ω/sq and 70% and 371.5 Ω/sq and 83%. These properties meet the requisite criteria for an ITO replacement.