• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2004.10a
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• pp.477-480
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• 2004

최근 생산 현장에 최종 제품의 성능 보장을 위해 사용될 소재의 특성을 검사하는 장비가 도입.운영되고 있다. 이들 장치 중 Rheotruder는 폴리머 소재의 품질 평가기준이 되는 점도를 측정하기 위해 제작되었으며 이는 지연시간 및 비선형적 특성을 갖게 되어 시스템의 분석이 용이하지 않다는 문제점을 갖는다. 본 연구에서는 비선형 특성을 갖는 측정 장치의 성능 평가를 용이하게 하기 위해 동적 시스템 모델링이 가능한 TDNN(Time Delay Neural Network)을 도입하여 실제 Rheotruder에 적용하여 봄으로써 그 유용성을 확인하고자 한다.

• Food Science and Industry
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• v.42 no.3
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• pp.2-7
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• 2009

• Journal of Environmental Policy
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• v.7 no.1
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• pp.1-29
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• 2008

The Ministry of Environment(MoE) of Korea has recently established the Environmental Health Act. This Act contains a clause related to implementation of Health Impact Assessment(HIA). So, selecting a landfill which was expected to have an influence on human health among major development projects, this study carried out the human risk assessment due to inhalation exposure to landfill gas emission and attempted to measure the possibility of domestic application of HIA in the future. The process for HIA on landfill site extension focusing on human risk assessment is as follows: The first step is to presume and calculate the amount of landfill gas emissions using LandGEM, The second step is to carry out exposure assessment using K-SCREEN Model which is used for predicting the concentration in a conservative method. The last step is to carry out human risk assessment of carcinogenic and non-carcinogenic substances. It is considered that it is likely to apply a technique for human risk assessment due to inhalation exposure to landfill gas emission performed here more specifically in the case of implementing HIA. In addition, it is also believed that more systematic studies are needed to overcome some weak points and limits found in this study and if these weak points and limits are improved more reliable outcomes will be produced.

• Korean Journal of Organic Agriculture
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• v.26 no.4
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• pp.759-774
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• 2018

This study was conducted to establish scores according to the importance levels of each HACCP evaluation item in cattle farm. The importance levels and score of each HACCP evaluation item was derived through the non-compliance rate and severity levels of hazard. In order to change the score criteria according to the importance of each HACCP evaluation item, we analyzed the importance of each HACCP evaluation item by using the portfolio mapping method according to the occurrence frequency and severity levels of hazard. The scores were classified into 3 point, 2 point, and 1 point, respectively, by classifying the importance of each category as 'high', 'middle' and 'lower'. Accordingly, we have established a now scoring system of each HACCP evaluation item through this study. Through the result of this study, the objectivity of the comparative evaluation was verified by implementing the currently used HACCP evaluation item to the cattle farm. In conclusion, Implementation of the result of this study to cattle farm may help to increase the objectivity and also improve more safety and hygienic cattle management and raw milk production.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2000.04a
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• pp.477-480
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• 2000

오늘날 많은 제조업체 또는 물류업체는 물류의 효과적 수행을 위해 물류센터를 운영하고 있으며, 물류센터의 효과적 이용을 통한 물류문제 해결은 기업운영에 있어서 주요 해결과제 가운데 하나로 자리잡게 되었다. 이러한 물류센터를 운영하고 관리함에 있어서 물류센터의 전략적 의사결정과 투자계획의 수립을 위해 물류센터의 수행도 측정을 통한 정량적인 평가가 절대적으로 필요하게 되었다. 그러나 현재 기업물류활동을 평가하기 위한 여러가지 물류활동 측정지표들이 제시되고 있으나 물류센터들의 수행도 측정을 위해 체계적으로 정의화되고, 표준적으로 사용되는 유력한 정량적 평가방법이 아직 제시되어 있지 않다. 본 연구에서는 물류센터의 특성을 Cost(비용), Operation(설비운영). Quality(성과), Speed(속도), Flexibility(유연성), Safety(안전성)등 모두 여섯 가지로 구분하여 각각의 특성을 통해 물류센터를 정량적으로 평가한다. 이중 Safety(안전성)를 기본으로 삼고 나머지 주요인자들의 정량적 평가치 들을 통해 물류센터의 종합적인 수행도 평가 모델을 제시하였다. 물류센터의 운영평가는 궁극적인 공급체인관리망(SCM: Supply Chain Management)의 완성과 기업의 업무효율에 이바지하는 것이다.

• Venture DIGEST
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• s.67
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• pp.14-15
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• 2005

정부의 벤처 활성화 대책에 발맞춰 최근 산업은행은‘기업금융 활성화를 위한 기술평가제도(2호)’를 발표하였다. 보고서에 따르면‘기술이전촉진법’과‘벤처특별법’등 기술거래를 위한 기술가치평가의 근거가 마련되어있지만, 미래가치 평가를 위한 평가시스템과 전문기관 및 인력이 필요하다고 지적하였다. 또, 벤처 활성화를 위해 기술평가의 표준화 추진과 평가모델 신뢰성을 제고하는 한편 정부차원의 적극적인 지원방안을 수립해 기업금융을 연계할 필요가 있다고 주장하였다. 다음은 산업은행의 보고서를 정리한 글이다.

• Journal of Environmental Impact Assessment
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• v.30 no.6
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• pp.413-424
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• 2021

Health impact assessment in the environmental impact assessment is conducted to determine whether to exceed the standard of each single substance and to establish appropriate reduction measures. In some development projects, although all substances in risk assessment meet the standard, exposure concentration is very close to it. However, considering the cumulative exposure of all substances, health effects are likely to occur considerably severer than those of individual substances, so it is necessary to prepare a concrete and improved methodology for integrating evaluation of emissions to identify the health effects actually exposed to receptors of living things. This study established the definition of cumulative risk assessment through overseas advanced cases and domestic and foreign literature reviews, and proposed a methodology for utilizing cumulative risk assessment considering health effects on multiple substances when developing industrial complexes. Applied by the proposed methodology, integrated indicators forfourtypes of hazardous heavy metals (Ni, Cr⁶⁺, Cd, As) emitted from industrial complexes were calculated, and applicability was tested with case of the industrial complex development projects conducted over the last decade (2011-2020).

• Proceedings of the Korea Water Resources Association Conference
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• 2021.06a
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• pp.341-341
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• 2021

농업적 가뭄을 모니터링하기 위해 토양수분량, 증발산량, 지하수위 등을 이용하며, 농업용 저수지의 저수율을 기반으로 농업용수 공급능력을 평가해 왔다. 특히, 농업용 저수지에 대한 농업적 가뭄을 평가하기 위해 저수율 관측 자료를 저수율을 이용하거나, 관측 자료가 없는 경우 물수지 모형을 이용한 연구는 다수 진행되어 왔다. 다만, 농업적 가뭄을 전망하는데 있어 물수지 모형의 활용은 입력 자료의 구축 및 기상예보자료의 활용 기술 부족으로 많은 평가가 진행되지 못하였다. 본 연구에서는 기상예보자료와 회귀모델을 연계한 농업적 가뭄전망정보를 산정하고, 활용성을 평가하였다. 기상예보자료는 기상청 현업예보 모델인 GloSea5로부터 생산된 자료를 이용하였으며, 농업적 가뭄을 평가하기 위해 농업용 저수율 자료 기반인 RDI (Reservoir Drought Index)를 활용하였다. 농업적 가뭄전망정보는 현재의 수문조건이 지속된다는 가정 하에 예보선행시간 3개월까지 산정하였다. 가뭄전망정보를 평가하기 위해 과거 가뭄사상을 대상으로 산정하였으며, 전망정보의 예측성은 통계분석을 이용하여 정량적으로 평가하였다. 금회 제시한 연구방법은 현재의 수문조건이 지속될 시 기상예보에 따른 농업적 가뭄을 예측할 수 있다는 점에서 활용성이 높을 것으로 판단된다.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2000.05a
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• pp.83-83
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• 2000

• Journal of Food Hygiene and Safety
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• v.14 no.4
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• pp.319-326
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• 1999

Recently, it is continuously rising to concern about the health risk being induced by microorganisms in food such as Escherichia coli O157:H7 and Listeria monocytogenes. Various organizations and regulatory agencies including U.S.FPA, U.S.DA and FAO/WHO are preparing the methodology building to apply microbial quantitative risk assessment to risk-based food safety program. Microbial risks are primarily the result of single exposure and its health impacts are immediate and serious. Therefore, the methodology of risk assessment differs from that of chemical risk assessment. Microbial quantitative risk assessment consists of tow steps; hazard identification, exposure assessment, dose-response assessment and risk characterization. Hazard identification is accomplished by observing and defining the types of adverse health effects in humans associated with exposure to foodborne agents. Epidemiological evidence which links the various disease with the particular exposure route is an important component of this identification. Exposure assessment includes the quantification of microbial exposure regarding the dynamics of microbial growth in food processing, transport, packaging and specific time-temperature conditions at various points from animal production to consumption. Dose-response assessment is the process characterizing dose-response correlation between microbial exposure and disease incidence. Unlike chemical carcinogens, the dose-response assessment for microbial pathogens has not focused on animal models for extrapolation to humans. Risk characterization links the exposure assessment and dose-response assessment and involve uncertainty analysis. The methodology of microbial dose-response assessment is classified as nonthreshold and thresh-old approach. The nonthreshold model have assumption that one organism is capable of producing an infection if it arrives at an appropriate site and organism have independence. Recently, the Exponential, Beta-poission, Gompertz, and Gamma-weibull models are using as nonthreshold model. The Log-normal and Log-logistic models are using as threshold model. The threshold has the assumption that a toxicant is produce by interaction of organisms. In this study, it was reviewed detailed process including risk value using model parameter and microbial exposure dose. Also this study suggested model application methodology in field of exposure assessment using assumed food microbial data(NaCl, water activity, temperature, pH, etc.) and the commercially used Food MicroModel. We recognized that human volunteer data to the healthy man are preferred rather than epidemiological data fur obtaining exact dose-response data. But, the foreign agencies are studying the characterization of correlation between human and animal. For the comparison of differences to the population sensitivity: it must be executed domestic study such as the establishment of dose-response data to the Korean volunteer by each microbial and microbial exposure assessment in food.