• 대한설비공학회지:설비저널
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• 제8권4호
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• pp.266-280
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• 1979

The renewed interest in the utilization of solar energy has revealed the need for reliable data concerning the irradiation of surfaces inclined at various angles, This report outlines the mantel in which these data were developed, presents the data in tabulated form and contains illustrative examples of how the data may be applied in the solution of solar energy utilization problems. The calculations performed and the data presented apply to latitudes 34 deg through 38 dog in South Korea.

• 교육시설 논문지
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• 제18권1호
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• pp.29-38
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• 2011

ent years, the change of urban function and the decrease in birth rate have given rise to merge, abolition and relocation of the existing schools. This study explores the possibilities for various land utilizations of relocated school sites, using the trial case of 'A' elementary school in Eun-pyeong gu, Seoul. 'A' elementary school has happened transfer plan due to the urban development project of the redevelopment area, Eun-pyeong gu in Seoul. Firstly, it studies the land use categories and the development methodologies of 7 relocated school sites happened in Seoul. In addition, it analyzes the land utilization after relocation, development principals, area, building usage and changes in land use regulation. Finally, it proposes the commercial exploitation of school site targeting 'A' elementary school site. Throughout the profit analysis, this study concludes that it is available to exploit the relocated school sites by the variety of development methodologies, especially in a metropolis like Seoul.

• Animal Bioscience
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• 제37권1호
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• pp.123-130
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• 2024

Objective: Beef of Jeju black cattle (JBC) is considered as a healthy meat type due to its significantly higher unsaturated fatty acids (UFA). Lipid (e.g., UFA) is highly susceptible to oxidizing agents, which results in the quality deterioration and economic value loss of meat products. Therefore, development and application of novel preservative techniques is necessary to improve the shelf-life stability of high-UFA beef. The objective of this study was to assess the applicability of chitosan-based coatings in preservation of JBC beef. Methods: Different coating solutions: 2% chitosan alone, and 2% chitosan containing 0.1% or 0.3% gallic acid were prepared to investigate their applicability in preservation of fresh beef during storage. Jeju black cattle beef (2-cm thick steaks) were non-coated (control) or coated with the above coating solutions, placed on trays, over-wrapped with plastic film and stored at 4℃. The microbiological indices, color, total volatile basic nitrogen (TVBN) and lipid oxidation of the beef were investigated after 1, 10, and 21 days of storage. Results: Coating with 2% chitosan alone reduced the spoilage bacteria count, TVBN and thiobarbituric acid reactive substances levels in the beef compared with control during storage (p<0.05). Noticeably, coating with 2% chitosan containing 0.1% or 0.3% gallic acid was more effective on retardation of spoilage bacteria growth, lipid oxidation and discoloration in the beef compared to the chitosan coating alone over the storage period (21 days) (p<0.05). Conclusion: Taken together, the combined chitosan and gallic acid coating could be used as a bio-preservative technique in the meat industry.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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• pp.200-203
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• 2009

One-dimensional rare earth oxide luminescence nano materials have been prepared by a combination method of sol-gel process and electrospinning. Systematic studie s on optical properties indicate that electrospinning is a facile and novel route for development luminescen ce materials that are useful in fluorescent lamps an d field emission dispalys.

• 한국양식학회:학술대회논문집
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• 한국양식학회 2005년도 춘계학술발표대회 논문요약집
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• pp.111-111
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• 2005

• 한국기계기술학회지
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• 제20권6호
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• pp.879-885
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• 2018

Precedent research and development of personal armor and anti-stab wearing system has been conducted since 2018 as a part of the government-affiliated cooperative development project to create the best utilization of present technology and achievement according to the civil and military technical cooperation project promotion law. At present, the armor system operated by the ROK(Republic of Korea) military, the police, and the marine police is utilizing only basic armor using armor vests and plates. Therefore it is necessary to develop the personal armor and anti-stab wearing system which is suitable for various tasks in army with maximum protection capability. In this paper, we analyzed the study about international technologies, market trends of the developed countries and scope of research, utilization plan, R&D results for the best armor and anti-stab wearing system development.

• 한국가정과교육학회지
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• 제16권3호
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• pp.63-80
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• 2004

본 연구는 중등학교 가정과 교사들을 대상으로 하여 7차 교육과정에서 권장하는 ICT 활용의 수업 실태와 그 인지도를 알아보고, ICT 활용 교수ㆍ학습 방법이 가정과 수업에 보다 효율적이고 적정하게 활용될 수 있기 위해 개발이 요구되는 단원과 자료유형을 파악하는데 그 목적이 있다. 조사대상자는 전국에 소재한 중등학교 교사 372명이었다. 본 연구에서 얻어진 결과는 다음과 같다. 1. ICT 활용 수업을 하는 이유로는 학습자의 학업 성취도를 높이기 위하여 전개 단계에서 제시형 자료를 가장 많이 적용하는 정보 안내 유형의 수업을 진행하는 것으로 나타났다. 2. 자신들의 ICT활용 능력에 대한 인지도는 홈페이지와 관련된 영역을 제외한, E-mail 송수신 능력 프리젠테이션 작성 능력, 인터넷의 활용 능력에 대한 인지도가 높았으며, 정보화 능력에 있어서 교육경력 10년 미만인 집단의 정보화 능력에 대한 인지도가 더 높은 것으로 나타났다. 3. ICT 활용 수업에 대한 인식은 수업의 흥미를 높이는데 가장 효과적이며, 73%의 교사가 ICT 활용 수업이 가정과 수업의 질을 향상시킬 것으로 기대하고, 교육 경력이 짧은 교사의 기대도가 더 높은 것으로 나타났다. 4. ICT 활용 수업을 위해 우선적으로 개발이 요구되는 단원(자료유형)으로는 중학교 2학년의 '옷 만들기와 재활용(데이터베이스)' 중학교 1학년의 '조리의 기초와 실제(데이타베이스)' '청소년의 영양(시뮬레이션 프로그램)', '성과 이성교제' 단원으로 나타났다.

• 지역연구
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• 제8권1호
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• pp.99-118
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• 1992

In spite of the rapid development of information and computer technology, the software side of those technologies has not been well studied especially in the area of regional planning. Throughout this study we identified some critical facts as below: 1) the necessity of region-specific information which is vital for urban and regional development, 2) the necessity of integration of information system into a regional unit rather than setoral unit, 3) aggravated regional inequality through the spread of communication and computing tools, and 4) advanced regional information system linking satellite and graphic computers in developed countries. From these facts, we recommend some policy directions as below: 1) It is desperately needed to establish a regional information center covering large administrative area. 2) In establishing these system, we can utilize existing communication network or estblish a brand new system. Utilization of existing administrative network and board of statistics for data collection and management, and the utilization of postal office or telephone company for distribution are recommended through the evaluation of those two alternatives, 3) It is also recommended that one-step data collection system should be established. 4) The Dat Base should be organized in many steps in close relationship with development goal and planning process. In order to make most use of this system, we need to develop a monitoring system, regional indicators and ex-ante impact studies.

• 정보교육학회논문지
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• 제19권4호
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• pp.385-398
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• 2015

연구는 초등학교 여학생의 컴퓨팅적 사고력 신장을 위한 교육 방법으로 앱인벤터 활용 S/W교육 프로그램을 제시하였다. 개발한 교육 프로그램의 효과를 분석하기 위해 지원자 표집에 의한 지원자 표본 중 3, 4, 5학년 여학생을 실험집단으로 선정하여 개발한 프로그램을 투입하였고 사전 사후 검사 결과를 통해 교육적 효과를 분석하였다. 분석 결과, 본 연구에서 개발한 앱인벤터 활용 S/W교육 프로그램이 초등학교 여학생의 컴퓨팅적 사고력 신장에 효과적임을 알 수 있었다.

• 한국수산과학회지
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• 제41권6호
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• pp.485-492
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• 2008

To propose proper vessel characteristics for sustainable fisheries in Korean waters, we analyzed the fishing capacity, scale efficiency and utilization of large pair-trawl vessels based on the database of catch, effort and vessel characteristics (gross tonnage and engine power) in 1990 by applying data envelopment analysis (DEA). The input factors were gross tonnage, horse power and days operated; whereas the output factor was expected catch by vessel characteristics. The optimal vessel types, selected based on the input-oriented technical efficiency and gross tonnages, was 100 GT with engine power <600 HP. The output-oriented unbiased estimate of capacity utilization (CD) decreased with increasing vessel tonnage. For the same tonnage vessels, the CD decreased with increasing engine power.