• 한국농공학회논문집
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• 제51권5호
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• pp.101-106
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• 2009

The previous study developed the Filter-Disinfection-Adsorption (FDA) system to provide clean irrigation water for greenhouse cultivation as well as convenience water to farmers. In this study, the field examination was undertaken to assess performance of the FDA system. The field application was made in the suburb of Daegu, one of the large city in Korea. The study area located near by down-stream of Gum-Ho river is suffering low irrigation water quality problems with no water supply service facilities. Four water quality parameters including Suspended Solid (SS), Biological Oxygen Demand (BOD), coliform, and turbidity were selected to test the purification performance of FDA system. Also in order to improve the system, this study investigated the defects of using the FDA system through field monitoring. As results, it was found that this system can be used to supply good quality of irrigation water for greenhouse cultivation and also provide convenience water to farmers in the field areas of no water supply services.

• 한국농공학회논문집
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• 제51권5호
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• pp.95-100
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• 2009

The water purification systems have been hardly used for agricultural purpose due to their complicated compositions and high costs for farmers, while only simple filtrations have been applied to irrigation systems in order to prevent the system from clogging problems. This study therefore developed a clean water supplying system, the Filter-Disinfection-Adsorption (FDA) system, especially for greenhouse cultivation of where low quality of water is available. This system has also been produced for providing convenience water to farmers in the areas of no water supply service systems for the purpose of washing their bodies or agricultural machineries after farm work. The FDA system consists of three stages of purification processes with an integral module, including disk and teflon filtrations and Ultraviolet (UV) sterilization processes. Indoor experiments were undertaken with a trial product of the FDA system to test its performance. The operation test of the process was performed as well as the condition check of each item including UV module, filters, control panel, pump, valves, etc. The results shows good performance of each test with no critical problems. The initial and maintenance costs were also analysed with other purification systems. From the comparisons, the FDA system found to be very economical and easy to use.

• 상하수도학회지
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• 제26권4호
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• pp.513-520
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• 2012

The use of food waste disposers (FWDs) can be an emerging option to manage organic food wastes in municipal sewage system. The cost-benefit analysis (CBA) of introducing domestic FDWs is conducted to access the allowable disposer market price and the economic impact on food waste management from conventional solid waste management system. If the convenience value of 10,000 won/month is taken into consideration based on survey results, the introduction of FDWs can lead to net economic benefits, allowing the capital cost of disposer up to 1,000,000 won/unit. Without the consideration of convenience value, the introduction of FWDs becomes profitable if the capital cost of disposer is less than 50,000 won/unit. In case that the value of convenience is more than 7,000 won/month, the reduction of food waste management cost is not valid for the introduction of FWDs to be non-profitable. However, if environmental externalities are considered, the proposed system could become breakeven with the cost of food waste management decreases by 54 % (60,000 won per ton).

• 환경영향평가
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• 제20권5호
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• pp.765-777
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• 2011

According to the total pollution load management system, exact prediction and analysis of water quality and discharge has been required in order to allocate the amount of pollution load to each local government. In this study, QUAL2E model was used for comparison with other water quality models and improve the inadequate to forecast future water quality. And Various calibration and verification methods were applied to deal with existing uncertainties of parameter during modeling water quality. For user convenience, A GUI(Graphical User Interface) system named "QL2-XP" model is developed by object-oriented language for the user convenience and practical usage. Suggested GUI system consist of hydraulic analysis, water quality analysis, optimized model calibration processes, and postprocessing the simulation results. Therefore this model will be effectively utilized to manage practical and efficient water quality.

• 농촌계획
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• 제9권3호
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• pp.47-52
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• 2003

The purpose of this study is to evaluate the satisfaction level and to analyze the factors in the environment friendly consolidation canals. In this study, the survey consists of four parts, such as the actual status of environment friendly canals, satisfaction level for each items, overall satisfaction level and the personal features of the users. Total 128 samples out of 140 respondents were used for the final analysis. Analysis of the satisfaction level were fulfilled to survey results such as the basic statistics and the correlations of variables, in addition, dispersion analysis for two user groups were carried out. Function of canal, water quality, landscape, and convenience facilities were chosen as independent variables in the model. Residents in Yeoju area were satisfied with water quality, water quantity and the function of canal. And residents of Yeonggwang area were satisfied with the convenience facilities and the function of the newly consolidated canal.

• Journal of Nutrition and Health
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• 제53권3호
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• pp.255-270
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• 2020

본 연구는 2019년 제15차 청소년건강행태온라인조사 원시자료를 활용하여 청소년들의 편의 식품 섭취 경험에 영향을 미치는 요인을 인구사회학적 특성, 정신건강 특성, 그리고 건강행태 특성으로 구분하여 살펴보았다. 연구 결과에 의하면 청소년들의 편의식품 섭취에 영향을 미치는 요인으로 인구사회학적 특성인 성별, 주관적 학업성적, 주관적 경제상태뿐만 아니라 정신건강 요인인 스트레스 인지, 주관적 수면 충족, 우울감 경험, 자살 생각이 유의한 변수로 확인되었으며, 건강행태 요인으로 아침식사 결식, 패스트푸드, 단 음료 섭취 등과 같은 식생활 행태뿐만 아니라 흡연, 음주, 약물복용 등의 요인도 청소년들의 편의식품 섭취에 영향을 미치는 것으로 확인되었다. 이러한 결과를 바탕으로 청소년들의 편의식품 섭취를 줄이기 위해서는 가정에서는 청소년들이 아침식사, 채소, 과일, 우유 섭취와 같은 건강한 식습관 및 충분한 수면 습관을 형성하도록 돕는 자녀교육이 필요하며, 학교에서는 청소년들이 건강한 식품을 선택하고 손쉬운 건강식을 스스로 만들어 먹을 수 있는 기술을 습득하도록 돕는 영양교육이 필요하다. 특히 편의식품 섭취 빈도가 높은 청소년들을 대상으로 스트레스를 관리하고 금연, 금주와 같은 건강증진 행위를 실천하도록 돕는 건강교육이 함께 실시될 필요가 있다. 정부에서는 청소년들에게 건강한 식품을 제공할 수 있는 소매 업체가 우선적으로 학교 주변에 위치할 수 있도록 법률을 제정하거나, 학교 주변 소매 환경에서 양질의 편의식품이 판매될 방안을 마련할 필요가 있다. 이러한 결과를 바탕으로 향후에는 청소년의 편의식품 섭취에 영향을 미치는 요인을 종단적으로 연구할 것을 제언한다.

• 한국응용과학기술학회지
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• 제39권5호
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• pp.666-673
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• 2022

본 연구는 국내 수상스포츠 시설의 서비스스케이프가 고객만족 및 참여행동에 어떠한 영향을 미치는지를 규명하여 운영방안의 기초자료를 제공하고자 했다. 따라서 수상스포츠 시설을 경험한 사람들 중 20대 이상 참여자를 표본으로 선정했다. 조사는 2022년 4월 25일부터 7월 15일까지 비대면으로 실시했으며, 총 243부의 데이터를 최종 분석에 이용했다. 자료처리는 SPSS(ver. 21.0) 프로그램을 활용해 빈도분석, 탐색적 요인분석, 문항내적일관성, 상관분석, 단순 및 다중회귀 분석을 실시했다. 본 연구의 주요 결과, 첫째, 수상스포츠 시설 서비스스케이프가 편리성, 공감성, 시설환경 순으로 가치에 영향을 미치는 것으로 나타났다. 둘쨰, 수상스포츠 시설 고객만족이 참여행동에 영향을 미치는 것으로 나타났다. 셋째, 수상스포츠 시설 서비스스케이프가 시설환경, 서비스, 편의성, 공감성 순으로 참여행동에 영향을 미치는 것으로 나타났다.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2005년도 학술발표회 논문집
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• pp.474-477
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• 2005

The Industrial development and the Increase in population have brought out a rapid increase of wastewater discharge. To deal with this matter, much estimate has been spend on construction and management of a large scale sewage treatment plant. Although every effort has been carried out, river water quality has no significantly improved. Especially. the aggravation of the water quality in dry season is brought out a serious social problem. The purpose of this study Is the development of an optimal water quality management technique considering the efficient control of the multiple pollutant load associated with the total pollutant load control. A GUI(Graphical User Interface) system named 'QL2-XP' model is developed by object-oriencted language for the user convenience and practical usage. Suggested GUI system consist of hydraulic analysis. water quality analysis, optimized model calibration processes, and postprocessing the simulation results.

• 한국농공학회지
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• 제44권2호
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• pp.148-160
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• 2002

Lake water quality assessment information is useful to anyone involved in lake management, from lakeshore owners to lake associations. 11 provides lake water quality, which can improve how to manage lake resources and how to measure current conditions. It also provides a knowledge base that can be used to protect and restore lakes. SWMM was applied to simulate the discharge and pollutant loads from Boryeong watershed, and WASP5 was applied to analyze the changes of water quality in Boryeong freshwater lake. In each model, the most suitable parameters were calculated through sensitive analysis and some parameters used default data. Simulated in SWMM and measured discharge showed the accuracy of 88.6%. T-N and T-P exceeds the criteria in the simulation of water quality in Boryeong freshwater lake, and control of pollutant loads in the main stream showed the most effective way. Integrated water quality management system was developed to give convenience in the operation of SWMM and WASP5 and data acquisition.

• 국제학술발표논문집
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• The 4th International Conference on Construction Engineering and Project Management Organized by the University of New South Wales
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• pp.376-381
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• 2011

In Korea Water Resources Corporation (K-Water) has seen four problems rising in four aspects of property management of approximately 1,300 buildings scattered through put to country. To solve these, ground data for repair and replacement works to be conducted for prevention will be prepared and building maintenance system (hereinafter referred to as PBMS) intended to record related repair and replacement work histories and calculate LCC of the related these items will be developed. PBMS, a web-based system, will be developed for users' convenience and data monitoring in real time. To sum up, PBMS are expected to maximize efficiency in four aspects including the establishment of repair and replacement work plans for prevention, history management, DB for predicting future work to be occurred and enable the determination of priorities by being developing into facility condition assessment systems through the results of analysis of repair and replacement histories and LCC.