• 한국의학물리학회지:의학물리
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• 제30권2호
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• pp.59-63
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• 2019

Purpose: To manage radiation measurement equipment, a web-based management program has been developed in this study. Materials and Methods: This program is based on a web service and Java Server Pages (JSP) and employs compatibility and accessibility. Results: The first step in the workflow has been designed to create accounts for each user or organization and to log in. The program consists of two parts: fields for listed instruments, and measurement information. The instruments for measuring radiation listed in this program are as follows: ionization chambers, survey meters, thermometers, barometers, electrometers, and phantoms. Instrument properties can be put in the recording fields and browsing for associated instruments can be performed. The main part of the program is the cross-calibration for each ion chamber. For instance, the ionization chamber to be used as a relative dosimeter can be registered by cross-calibration data with a reference chamber calibrated by an accredited laboratory. This program supports methods using the central axis transfer theory for cross-calibration for the ionization chambers. The reference and field ionization chambers were placed in a solid water phantom along the beam central axis at two different depths, and then the positions were switched. Each measured value was used for calculating the cross-calibration factor. Conclusions: Because many instruments are used and managed in radiation oncology departments, systematic, traceable recording is very important. The web-based program developed in this study is expected to be used effectively in the maintenance of radiation measurement instruments.

• 한국농공학회:학술대회논문집
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• 한국농공학회 2002년도 학술발표회 발표논문집
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• pp.137-140
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• 2002

The monitoring system for integrated management of on-site wastewater treatment plants(biofilter) was designed and its operation program was developed. In design process, the research on monitoring parameters which will be able to represent condition and operation of the pilot plants was accomplished, and these parameters came to reveal with ORP(Oxidation-Reduction Potential), water level, pump and power on/off. Proposed monitoring system is composed with measurement, control, communication and display device, and PCB(Prototype Circuit Boards) and microcontroller (PIC16F877) technique are applied to its design of control device for performing specific function. also, The operation program of PC setup is developed in order to provide a convenience to the manager.

• 한국지하수토양환경학회지:지하수토양환경
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• 제12권3호
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• pp.1-9
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• 2007

수질오염 총량제가 시행됨에 따라 깨끗한 수자원을 확보하기 위한 오염퇴적물의 관리 및 처리 필요성이 더욱 높아지고 있다. 본 논문에서는 오염퇴적물의 발생원과 오염퇴적물이 수질에 미치는 영향을 살펴보고, 오염퇴적물의 관리방향을 제시하였다. 오염퇴적물을 처리하기 위한 공법으로 준설공법과 자연정화법, 현장고정화/안정화, 생물학적 현장처리, 화학적 현장처리 공법에 대하여 요약 제시하였다. 또한 새롭게 대두되고 있는 캡핑공법을 소개하고, 오염퇴적물 처리를 위한 복합공법의 적용에 대한 개념을 제시하였다.

• 대한지역사회영양학회지
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• 제20권6호
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• pp.447-459
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• 2015

Objectives: This study aimed to assess the improvement of teachers' sanitation performance and food distribution environment at Centers for children's food service management after a sanitation education program. Methods: The subjects were 119 teachers working at child care centers registered in the Daejeon Center for Children's Foodservice Management in Dongu and Jung-gu, Daejeon. The sanitation education was provided three times from March to August in 2014, and the survey questionnaires were distributed before and after the education. The sanitation status of food service environment of the centers was examined by ATP(adenosine-5'-triphosphate) bioluminescence. Results: After the sanitation education, the teachers showed higher levels of sanitation knowledge. Also, sanitation performance and recognition level of the importance of it significantly improved after the education program. The mean variation scores of importance and performance after the education were 0.14 and 0.23. According to the Importance-Performance Analysis (IPA) results of 26 sanitation attributes about the food service environment, the selection attributes with relatively low performance and importance were mostly distributed in the children's and distributer's personal hygiene management area. However, all attributes except using a personal water bottle and cup were moved to high performance and importance level. Also, the ATP examination results showed that the sanitation status of the food service environment was improved after the education program. Conclusions: The sanitation education program was effective in improving the recognition of the importance of sanitation and its performance with regard to food service management.

• 한국물환경학회지
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• 제33권6호
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• pp.769-779
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• 2017

Nutrient (i.e., nitrogen and phosphorus) budgets are required under a 'Livestock Excreta Survey'. A nutrient budget is one of the agri-environmental indicators that calculates the difference between the inputs and outputs of the amount of nutrients within a certain boundary and for a certain time period (e.g., 1 year). In this study, a nutrients budget model was developed to effectively determine the surplus of nutrients within a region in Korea. The C# program language was used in order to facilitate the deployment of a graphical user interface (GUI) and to enhance compatibility. Also, the model was developed on Windows OS, which is the commonly used operating system in Korea. The model was based on the OECD/Eurostat nutrient budget method, and it was modified to consider manure composting procedures as well. There are key features of the nutrient budget model, including directly use of the original data sets from various input and output sources, and a collectively exchange of the address in different formats. The model can quickly show the results of various spatial and temporal resolutions with the same data, as well as perform a sensitivity analysis with coefficients and easily compareresults using tables and graphs. Further, it would be necessary to study the extension of the scope of utilization, such as the application of various nutrient budget methods. It would also be helpful to investigate both pre and postprocessing information such as linking input data through online systems.

• 한국컴퓨터정보학회논문지
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• 제23권6호
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• pp.23-32
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• 2018

This study explore the possibility of water sports activities as juvenile pleasure, and was performed for the purpose of looking for ways to develop it. In order to do this, I was conducted interviews with the water sports of seven experts to achieve. As the development direction of the main contents of the interview is youth leisure activity, specific details are expected to be young and effect change through the application of Maritime youth sports programs, potential problems, and direction of water sports youth development program, primarily part of the effort needed and so on is composed of. Interview data was categorized as a job that has undergone a similar topic by phenomenological analysis of Giorgi. Findings water sports activities despite having plenty of potential to contribute to the holistic growth of the youth, the conclusion was drawn that various constraints exist. Management of water sports agencies as a way to solve this problem, provided supervision, property development program for adolescents and youth professional guidance workforce, youth water sports activities such as infrastructure presents a proposal.

• Environmental Engineering Research
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• 제15권1호
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• pp.35-40
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• 2010

Bung Boraphet is the largest freshwater reservoir in Thailand. This study examined the accumulation of copper (Cu) and lead (Pb) in water, sediment and tissues of Asian clams (Corbicula sp.) within Bung Boraphet to assess the possible polluting effect of soil erosion and the dissolution of water soluble salts from the Nan River. Samples were collected from 12 study sites within Bung Boraphet between February and December 2008. The physicochemical parameters of the water including temperature, pH, turbidity, ammonia nitrogen, nitrate nitrogen, orthophosphates, biochemical oxygen demand, dissolved oxygen, Cu, and Pb were measured. The water in Bung Boraphet was found to be medium clean according to the surface water quality standard of Thailand. The levels of Cu and Pb in the water were low but heavy metals were detected at higher levels in the sediment and tissues of Corbicula sp. In the near future, management practices and regulator approaches for Cu and Pb contamination will be needed to protect the water in Bung Boraphet.

• 치위생과학회지
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• 제6권2호
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• pp.133-138
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• 2006

이 연구는 상수도수불화사업의 경제적 편익에 미치는 영향을 파악하기 위하여 2003년 1월 1일부터 6월말까지 상수도수불화지역인 청주시 상당구, 상수도수비불화지역인 안양시 만안구를 대상지역으로하여, 조사대상지역내의 치과의원에서 진료를 받은 진료지표를 비교 분석한 결과는 다음과 같다. 1. 상수도수비불화사업지역인 안양에서 상수도수불화사업을 실시할 경우 2003년 상반기의 6세에서 18세까지 연령에서 기대되는 치아우식증과 치수 및 치근단 주위조직 질환으로 인한 감소기대진료건수는 1,272건, 저추정시 636건, 고추정시 1,908건이 감소될 것으로 기대된다. 그리고 감소기대진료비는 40,888천원, 저추정시 20,444천원, 고추정시 61,333천원이 감소될 것으로 기대된다. 2. 상수도수불화사업의 전국 확대를 가정한 연간 기대건수는 2,492,018건, 저추정시 1,246,009건, 고추정시 3,738,027건이 감소가 기대되며, 감소기대진료비는 80,105,075천원, 저추정시 40,052,537천원, 고추정시 120,157,612천원이 각각 감소가 기대된다. 3. 급수인원이 48,925명인 영운정수장의 경우 편익/비용 비율이 2.9배이며, 급수인원이 239,751명인 지북정수장의 경우 편익/비용 비율이 9.0배이다. 상수도수불화사업은 급수인원이 증가함에 따라 비용의 증가는 미미하고 규모에 따른 경제 효과가 매우 크게 나타났다. 국민구강건강증진은 아울러 구강건강보험재정의 비용절감과 연관이 있다고 사료되며, 이를 위하여 전국 모든 지역에 상수도수사용을 확대 실시하여, 상수도수와 불소화에 대한 적극적인 홍보와 교육을 통한 신뢰 구축이 추가적으로 필요하다고 생각된다.

• 대한공간정보학회지
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• 제3권2호
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• pp.101-113
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• 1995

상수도 계획 시 계획에 필요한 지형 및 공간특성이 갖는 정보들의 상호 유기적인 결합과 분석의 활용 가치를 증대시키기 위하여 보다 체계적이고 합리적인 정보관리체계가 필요하며 이러한 문제해결을 위한 데이타베이스 관리시스템(Data Base Management System : DBMS) 및 의사결정 지원시스템의 구축이 불가피하다. 또한 관로상의 수리학적 특성에 관련된 통과경로는 대상경로가 갖는 지리적 특성에 큰 영향을 받으므로 수리학적 안정성과 용수공급 대상지역까지 도수 및 송수가 원활히 이루어질 수 있도록 보다 경제적인 노선의 선정방법이 요구된다. 따라서 본 연구에서는 상수도의 신규개발이나 기존시설 확장 시, 계획의 적정성이나 경제성 등을 고려하여 각종기술 및 사회적 경제적 요인을 종합적으로 분석하고 그 결과를 토대로 보다 합리적이고 효율적인 계획 대안을 제공할 수 있는 의사결정 지원시스템을 도입한 상수도 계획기법을 개발하고자 하였다. 특히 상수도 관로계획 수립은 대상지역의 지형 및 토지이용특성에 따른 영향이 지배적인 인자이며 이를 해결하기 위한 방만으로 지리정보시스템(Geographic Information System ; GIS)을 이용하여 시스템을 구성하였다. 용수공급계통계획의 주된 요인인 지형적 공간적 특성을 GIS가 지니는 각종 분석기능과 관로 수리해석 프로그램 SAPID, 경제분석 프로그램인 ECOVEL을 개발하여 결합하고, 지형적인 공간특성정보를 데이터베이스화함으로써 관로의 적정노선을 보다 합리적으로 선정할 수 있는 의사결정 지원시스템을 개발하였으며 개발시스템의 현장 적용성 평가를 실시하여 그 가능성을 검토하였다.

• 한국물환경학회지
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• 제25권6호
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• pp.972-978
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• 2009

This study modifies the present total maximum daily load (TMDL) system of Ministry of Environment and applies to the Anyangcheon watershed. Hydrologic Simulation Program-FORTRAN (HSPF) model is used to simulate both runoff and non-point source pollution, simultaneously, instead of QUAL2E. The drought flow (355th daily flow) is proposed for the target water quantity since it is easier to satisfy low flow (275th daily flow) for the target water quality than drought flow. The increase of discharge is more than the increase of pollutant load except for the period under low flow. The measured unit loads for non-point source are used to consider the regional runoff characteristics. The measured water quantity and quality data are used since the ministry of environment supports only water quality. This analysis results show some reasons for the improvement of the present TMDL system of Korea.