• Title/Summary/Keyword: reasonable improvement

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A study on the Rationalization of Safety Management in Chemical Facilities: Focused on Architecture Fire Resistance Standards (화학물질 취급시설의 안전관리 합리화 방안 연구: 건축물 내화기준 중심)

  • Lee, Eun-Byul;Yoo, Byung-Tae
    • Fire Science and Engineering
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    • v.33 no.3
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    • pp.91-97
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    • 2019
  • In Korea, the Ministry of Environment's Chemical Control Act is the basis for hazardous chemical substances and safety management is being carried out. In particular, the standards for the installation and management of facilities are strongly managed. There were problems in the early stages of implementation, conflict with other laws, size of facilities and non-reflection of material properties. In this study, more realistic and reasonable improvement was planned for the fire-resistance standard of buildings among these facilities. We compared the fire resistance standards of buildings in the Korean similar chemical facility safety management ordinance. Key problems were identified through examples of representative complaints concerning the criteria for facilities. Finally, the Chemical Control Act provided an improvement measure to apply the building fire-resistance standard by clarifying the size and chemical of facilities. In the future, the results of this study are expected to be consistent with the basic purpose of the Chemicals Contral Act considering environmental hazards and contribute to the standard of handling facilities of reasonable chemical management laws that can be applied to the industry in reality.

A Study on Improvement Plans for Application of the Personal Information Protection Act(Based on the Subject to Duty of Safeguards) (개인정보보호법 적용 대상에 대한 개선 방안 연구(안전성 확보조치 기준 의무 대상 중심으로))

  • Jang Sang Soo
    • Convergence Security Journal
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    • v.23 no.1
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    • pp.35-43
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    • 2023
  • Since the Personal Information Protection Act was enacted in 2011, it has played a role in safely protecting people's personal information and protecting their rights. Personal information controller must comply with the duty of safeguards for safe personal information management. Even though administrative regulation is an accompanying issue, it is not clear to whom, when and how it applies. According to the imposition of duties, the scope, standards, safety measures, procedures, etc. for the target person should be clearly and specifically specified, but the current legal system is insufficient .In this study, problems and reasonable improvement plans were presented for the classification criteria for applicable subjects, the criteria for the criteria for determining the targets, and the criteria for measures to ensure safety. Through this, we intend to contribute to enhancing the effectiveness of the system by presenting reasonable measures by clarifying and specifying the scope and standards of application.

A Note for 1.5σ Shift of Six Sigma (식스시그마의 1.5σ 이동에 대한 소고)

  • Park, Jong Hun
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.45 no.1
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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.

An Improvement of Particle Swarm Optimization with A Neighborhood Search Algorithm

  • Yano, Fumihiko;Shohdohji, Tsutomu;Toyoda, Yoshiaki
    • Industrial Engineering and Management Systems
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    • v.6 no.1
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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.

A Study on the Evaluation Method of Green Remodeling Considering LCA and LCC (LCA 및 LCC를 고려한 환경친화적 리모델링의 평가방법에 관한 연구)

  • Lee, Gwan-Ho;Kim, Nam-Gyu;Rhee, Eon-Ku
    • Journal of the Korean Solar Energy Society
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    • v.23 no.1
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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.

The IPA of Multilateral Perception on Foodservice Quality of Hospital Funeral Centers : Focusing on Foodservice Operators, Chief mourners/the bereave and Funeral Visitors (의료기관 장례식장 급식품질의 다자간 인식차이 및 IPA 분석: 장례식장 급식운영 담당자, 상주 및 유족, 조문객을 중심으로)

  • Park, Moon-Kyung;Lee, Jung-Yoon;Jeong, Yun-Hui
    • Korean journal of food and cookery science
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    • v.30 no.2
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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.

The Design Optimization of LCD Panel Bonding Equipment by Design of Experiment (실험계획법을 이용한 LCD 압착장비의 설계최적화)

  • Hwang, Il-Kwon;Kim, Dong-Min;Chae, Soo-Won
    • Journal of the Korean Society for Precision Engineering
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    • v.27 no.12
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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.

Problem of Evaluation Methods on the Wall Facing-Geosynthetics Connection Strength and Its Improvement (전면 벽체-보강재 연결강도 평가방법의 문제점 및 개선 방향)

  • Hong, Ki-Kwon;Shin, Ju-Oek;Han, Jung-Geun;Cho, Sam-Deok;Lee, Kwang-Wu
    • Proceedings of the Korean Geotechical Society Conference
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    • 2008.10a
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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.

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A Study on the Assessment of a Reasonable Transformer Capacity by the Improvement of Diversity Factor (부등률 적용 개선을 통한 변압기의 적정용량 산정에 관한 연구)

  • Seo, Seung-Kwan;Oh, Yong-Taek;Kim, Se-Dong;Shin, Wha-Young;Yoo, Sang-Bong;Lee, Jin
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.24 no.8
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    • pp.15-20
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    • 2010
  • This paper shows a reasonable diversity factor, that was made by the systematic and statistical way considering actual conditions, such as investigated contract power and peak power for the last 5 years of each customer for 20 Lease Apartment. In this paper, it is necessary to analyze the key features and general trend from the investigated data. It made an analysis of the feature parameters, such as average, standard deviation, median, maximum, minimun and thus it was carried out by the linear and nonlinear regression analysis. The standards of demand, diversity, and load density are necessary to create the design of a transformer capacity that is seldom presented in terms for academic study.

An Analysis of the Household Consumption Expenditure Structure by the Korean Economic-Development Plan Years (한국경제개발 계획년도별 가계소비지출 구조분석)

  • 박선미;김영숙
    • Journal of Families and Better Life
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    • v.10 no.2
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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.

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