• 한국화재소방학회논문지
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• 제33권3호
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• pp.91-97
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• 2019

국내 화학물질 안전관리는 환경부의 화학물질관리법이 기본이 되어 관리되고 있다. 그 중에서도 취급시설의 설치 및 관리기준을 강화하여 관리하고 있는데, 타 법과의 상충, 시설 규모 및 물질 특성 미반영 등으로 인한 문제점들이 노출되었다. 본 연구에서는 이러한 취급시설 기준 중 건축물 내화기준에 대해 보다 현실적이면서 합리적인 개선 방안을 마련하고자 하였다. 이를 위해 국내 유사 화학물질 취급시설 안전관리 법령의 건축물 내화기준을 비교하였으며, 환경부 화학물질안전원 국민신문고를 통해 접수된 취급시설 기준 관련 민원 2220건 중 대표 민원 사례를 통해 주요 문제점을 파악하였다. 마지막으로 화학물질관리법상 취급시설의 규모와 물질의 종류를 구체화하여 건축물 내화기준을 적용하는 개선 방안을 제시하였다. 향후, 본 연구 결과는 환경 유해성을 고려한 화학물질관리법의 기본 취지에 부합하고, 산업계에도 현실적으로 적용될 수 있는 합리적인 기준마련에 기여할 수 있을 것으로 기대된다.

• 융합보안논문지
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• 제23권1호
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• pp.35-43
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• 2023

우리나라는 2011년에 개인정보보호법이 제정되어 국민의 개인정보를 안전하게 보호하고 권익을 보호하는 많은 역할을 해오고 있다. 개인정보처리자는 안전한 개인정보 관리를 위하여 안전성 확보 조치 기준을 의무적으로 준수해야 한다. 이렇게 행정 규제가 수반되는 문제임에도 누구에게 언제 어떻게 적용되는지가 명확하지 않다. 법 적용의 원칙은 법의 적용 범위나 대상이 명확해야 하고 대상자의 법적 안정성과 예측 가능성에 있어야 한다는 것이다. 의무 부과에 따라 대상자에 대한 범위, 기준, 안전조치 항목, 절차 등이 명확하고 구체적으로 명시되어야 하지만 현행법 제도는 미흡하다. 따라서 본 연구에서는 선행연구와 개인정보보호 실태조사 자료를 기반으로 적용 대상자 분류 기준, 대상 판단 근거 기준, 안전성 확보 조치 기준 등에 대한 문제점과 합리적인 개선 방안을 제시하였다. 이를 통해 적용 범위와 기준을 명확화, 구체화하여 합리적인 방안을 제시하여 제도의 실효성을 높이는데 기여하고자 한다.

• 산업경영시스템학회지
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• 제45권1호
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• pp.31-40
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• 2022

Six Sigma is a philosophy and systematic methodology for quality improvement. It encourages continuous quality improvement efforts to achieve the ideal goal of 6σ. Sigma(σ) is a statistic representing the standard deviation of the normal distribution, and 6σ level means a level where the tolerance of the specification is six times the standard deviation of the process distribution. In terms of the defective rate, the 6σ level achieves the 0.002 defectives per one million units. However, in the field, the 6σ level is used in the sense of achieving 3.4 defects per one million opportunities, which shows a large gap from the 6σ level in the statistical viewpoint. This is because field practitioners accept a 1.5σ shift of the mean of process when calculating the defective rate under sigma level. It said that the acceptance of 1.5σ shift of the mean is from experience, but there is no research or theoretical explanation to support it logically. Although it is a non-scientific explanation based on experience, considering that there has been no objection to the 1.5σ shift for a long time and it is rather accepted, it is judged that there is a reasonable basis for the 1.5σ shift. Therefore, this study tries to find a reasonable explanation through detective power of control chart via the run-rules to the 1.5σ shift empirically recognized by practitioners.

• Industrial Engineering and Management Systems
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• 제6권1호
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• pp.64-71
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• 2007

J. Kennedy and R. Eberhart first introduced the concept called as Particle Swarm Optimization (PSO). They applied it to optimize continuous nonlinear functions and demonstrated the effectiveness of the algorithm. Since then a considerable number of researchers have attempted to apply this concept to a variety of optimization problems and obtained reasonable results. In PSO, individuals communicate and exchange simple information with each other. The information among individuals is communicated in the swarm and the information between individuals and their swarm is also shared. Finally, the swarm approaches the optimal behavior. It is reported that reasonable approximate solutions of various types of test functions are obtained by employing PSO. However, if more precise solutions are required, additional algorithms and/or hybrid algorithms would be necessary. For example, the heading vector of the swarm can be slightly adjusted under some conditions. In this paper, we propose a hybrid algorithm to obtain more precise solutions. In the algorithm, when a better solution in the swarm is found, the neighborhood of a certain distance from the solution is searched. Then, the algorithm returns to the original PSO search. By this hybrid method, we can obtain considerably better solutions in less iterations than by the standard PSO method.

• 한국태양에너지학회 논문집
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• 제23권1호
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• pp.57-67
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• 2003

This study aims to presents Evaluation Method of Green Remodeling that analyze the value of environment through expense, using the method of life cycle cost and life cycle assessment simultaneously. The results of this study are summarized as follows. Evaluation Model developed in this study can convert economical value of environment into cost by integrating. In addition, the model can apply as a useful tool to estimation of economical design alternative as well as quantification of environmental loads and costs. Evaluation Model presented In this study observe energy consumption and the environmental load emission with qualification, it can forecast effect of environmental cost that cost estimation is expected to be added to energy cost rate by being possible. Synthetically, when Estimation Model and computer program that developed in this study is applies to the construction industry; reasonable management of environmental load is convenient at each step of Green Remodeling. In addition, at preliminary design phase, practical use may be possible by reasonable yardstick about various alternatives and improvement of design alternatives likewise by grasping environmental effect.

• 한국식품조리과학회지
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• 제30권2호
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• pp.228-238
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• 2014

This study identified the importance and performance perceptions of funeral foodservice service quality toward funeral foodservice employees, chief mourners/the bereaved and funeral visitors. Data were collected using self-administered questionnaires from 102 funeral foodservice employees, 71 chief mourners/the bereaved and 293 funeral visitors. According to the result of the survey, 'hygienic food production process' was recognized as the most important attribute while 'neat appearance of food' had the least performance. By comparing the importance of service quality attributes between three subject groups, it can be identified funeral foodservice employees had the highest recognition while funeral visitors had the lowest (p<0.001). Furthermore, funeral foodservice employees had a significantly high performance level compared to chief mourners/the bereaved in all 19 service quality attributes (p<0.001). The IPA result toward funeral foodservice employees indicated the following attributes that required improvements: 'reasonable menu price' and 'kindness of helpers'. Another IPA result from chief mourners/the bereaved recognized 'reasonable menu price' as a service priority. Overall, implications for funeral foodservice managers regarding service quality improvement are discussed.

• 한국정밀공학회지
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• 제27권12호
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• pp.92-98
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• 2010

The design of press bonding tool in LCD module equipment is a very complex and difficult task because many design able variables are involved while their effects are not known. It takes longtime experiments and much expenses to verify the effects of these design variables. However the optimization of bonding tool using OLB(outer lead bonding) and PCB Bonding is a very important problem in LCD manufacturing process, so much design efforts have been made for improving the bonding tool performance. In this paper, a reasonable and fast process which gives optimized solution under the design requirements has been presented. Both analytical and statistical methods are employed in this process. A reliable analytic model using experiment-oriented FE analysis can be obtained, in which the regression equations that predict the tool efficiency from various DOE method are found. Improvement of tool efficiency could be estimated by the regression equations using meaningful factors converged by RSM(Response Surface Method). With this process a reasonable optimized solution that meets a variety of design requirements can be easily obtained.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2008년도 추계 학술발표회
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• pp.184-195
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• 2008

The use of geosynthetics for the reinforced earth wall system has been increasing rapidly for a number of years. The connection strength between wall facing and geosynthetics should be evaluated in the design of geosynthetics. However, the connection strength is not often evaluate, exactly, and it causes problems such as deformation of the wall facing, local failure of the reinforced earth wall system, conservative design and so on. Therefore, the connection strength in the design of geosynthetics should be applied evaluation result by reasonable method. This study is evaluated connection strength using the typical design method, NCMA(1997) and FHWA(1996), in the field case. Then the results compared with the evaluation results of connection strength, which is suggested by Soong & Koener(1997). The analysis results confirmed that the connection strength for the design of geosynthetics should be evaluate using reasonable method with considering various factor, such as safety factor, installation and importance of construction.

• 조명전기설비학회논문지
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• 제24권8호
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• pp.15-20
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• 2010

전력용변압기 용량을 산정하는데 있어서 수용률 및 부등률, 단위세대의 표준 부하용량은 매우 중요한 기준이다. 본 연구에서는 60[$m^2$] 이하의 임대아파트를 대상으로 각 수용가의 계약전력과 최근 5년 동안의 최대전력을 조사하였다. 조사된 자료의 전체 특징과 중심적인 경향을 알아 보기 위해서 평균값 등의 특징 파라미터를 분석하였고, 회귀분석을 통하여 그 경향을 분석하였다. 모든 단지가 전력용변압기의 여유가 많은 것을 확인하였고, 적정용량 산정을 위한 부등률 기준을 제안하였다.

• 가정과삶의질연구
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• 제10권2호
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• pp.1-18
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• 1992

The purpose of this study is to consider the socio-economic development and policy in each five-year economic development plan influences of urban households and to seek a plan of household stability and reasonable consumption expenditure on the aspect of Family economics. Data is based on the "Annual Report on the Family Income and Expenditure survey" of the National Bureau of Statistic Economic Planning Board, Republic of Korea and analyzed as follows: First, in analysis to the structure of consumption expenditure, the averaged percentage of each item to total consumption expenditure is estimated by each Economics Development Plan year. Second, in order to analyze the relative importance value of household consumption expenditure, priority correlation order is derived from comparison of characteristics of household consumption expenditures by multiple regression analysis. Third the patterns of consumption expenditure of salary and wage earner's households in all cities are estimated by the household consumption function, marginal propensity to consume, and income elasticity, according to socio-economic variable, and demographic variable. In the recent Korean economy, income level of household is increased and consumption expenditure level is largely increased because of the execution of economic development plan. But the improvement of income derives the increasment of the consumption needs and over-consumption trend is spread due to the import liberization. And above all, the reasonable household management and economic life are needed.