• 한국안전학회지
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• 제20권3호
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• pp.34-41
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• 2005

For assessing residual lift of the steam pipe in fossil power plants, inspections and analysis are usually focused on the critical locations such as butt welds, elbows, Y-piece and T-piece of the steam pipes. In predicting the residual life of T-piece, determination of local stress near welds considering system load as well as internal pressure is not a simple problem. In this study, stress analysis of a T-piece pipe was conducted using a three-dimensional model which represents the T-piece of a domestic fossil power station. Elastic and elastic-creep analysis showed the maximum stress level and its location. Residual creep rupture life was also calculated using the stress analysis results. It was argued that the calculated life is reasonably same as the measured one. The stress analysis results also support life prediction methodology based on in-field replication technique.

• 한국실내디자인학회논문집
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• 제13권4호
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• pp.196-203
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• 2004

In The Lighting design is important to acknowledge appearance space. Development of artificial light makes a extension to life space in the Modern life. With the rapid development of efficient light sources, have lighting design acquired the tools that allow artificial lighting to be produced with adequate illuminance levels. However, by the task of defining the objectives and methods behind discipline, of deciding on the criteria by which the artificial lighting that is now provide many available data to be anpaied. The main concern is which illuminace levels and types of lighting will ensure optimum visual performance, high productive and safety at design which are affordable. This study is support to standard design process with material reflection rate, installing the lighting fixture, task illuminance level and automatic arithmetic calculation during the lighting design. Lighting Design database can check and support other final lighting level. A quantitative light that is primarily oriented toward providing a recommended illuminance level, the criterion of develop a concept that goes beyond the requirements that would ensure productivity and safety to meet the needs of the architecture and interior space. illuminance level is compose to space task and space code according to KS A 3011. To be able to design the visual effect of an environment the central reference quantity has to provided the Database.

• Journal of the Korean Wood Science and Technology
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• 제23권4호
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• pp.46-53
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• 1995

The anatomy of Korean diffuse-porous woods, 36 families, 75 genera, 145 species, 215 specimens was described and analyzed. Sixteen wood anatomical characters, habit and phenology factors were determined by simple correlation and principal component analysis. Strong positive correlations were found between vessel element length and fiber length, ray width and ray height, simple pits of fiber wall and paratracheal parenchyma distribution. The results of principal component analysis (PCA) disclose the primitive characteristics and the direction of xylem evolution of Korean diffuse-porous woods. The xylem evolution scenario for Korean dicotyledonous woods is considered to be developed in the direction of decreasing trends of vessel frequency, vessel element length, and length/diameter(L/D) ratio of vessel element but increasing trends of vessel diameter, fiber length/vessel element length(F/V) ratio, libriform wood fibers, simple perforation, and homogeneous ray composition. Increase of vessel diameter and decrease of vessel frequency seem to be related to the improvement of conductive efficiency, and increase of the vessel element length and occurrence of scalariform perforation in vessel element may be related to enhanced of conductive safety. Also the libriform wood fibers and ray features appear to have relationship with mechanical support and nutrient metabolism, respectively.

• 한국자동차공학회논문집
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• 제14권5호
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• pp.186-194
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• 2006

Traffic accident involved with the vulnerable pedestrian is one of the significant concerns, which has higher possibility of fatality than any other accident types. Worldwide significant efforts have been made to establish a vehicle safety regulation, which is internationally agreed, in order to reduce pedestrian casualties in pedestrian-vehicle collisions. One of the key issues in deriving the regulation is how to effectively select the parameter values associated with the regulation. This study firstly develops a method to optimize parameter values. An optimizing problem in terms of maximizing safety benefits, which are life-saving effects by the regulation, is formulated. Extensive actual accident data analysis and simulations are conducted to establish several statistical models to be used in the proposed optimization procedure. A set of parameter values that can produce maximizing life-saving effects is presented as the outcome of this study. It is expected that the proposed method would play a significant role in determining parameters as a decision support tool toward ensuring better pedestrian safety.

• 한국안전학회지
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• 제32권1호
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• pp.121-127
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• 2017

Recently, many patients in a hospital are threatened life by fire disaster. Because many patients like vulnerable people have more evacuation problem than ordinary person. So a patient who can escape by oneself with walking assistance device like crutches or wheelchair and another patient who can't escape by oneself are should be supported safety technologies and service. Earlier research of 'hospital evacuation' led by actual experiments or computer evacuation simulation. Actual experiment is effective to gain credibility of result but it is difficult for patients to experiment repeatedly and it requires consideration for spatial problem and economic problems. Although computer evacuation simulation have been used to solve these problems, almost have concluded only results based on velocity without evacuation device. In this study, evacuation results with support device application or not are analysed used by computer evacuation simulation based on MAS(Multi Agent System). As a result, it is drawn through proof of efficiency of evacuation device in the vertical space like stairs that can improve the evacuation plan for vulnerable people in the hospital.

• 한국심리학회지 : 문화 및 사회문제
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• 제9권spc호
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• pp.89-105
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• 2003

이 글에서는 한국 사람들의 안전과 관련된 심리 중에서도 특히, 한국 청소년의 안전관련 토착심리를 분석하는데 주된 목적이 있다. 이를 위해 다음과 같은 네 가지 측면에서 선행연구 결과들을 개관하고 정리하였다. 첫째, 한국 청소년의 안전사고에 대한 고유한 표상을 파악하기 위해, 안전사고의 내용, 안전사고의 원인, 안전사고 후의 사회적 지원, 안전사고의 예방 측면에서 살펴보았다. 이러한 안전사고에 대한 표상이 학교수준별, 성별, 안전효능감수준별로 어떠한 차이점과 공통점이 있는지에 대해서도 검토하였다. 둘째, 한국 청소년 안전효능감의 변화를 분석하기 위해, 안전효능감의 개념을 정의하고, 초 중 고등학생의 안전효능감 수준의 변화를 살펴보았다. 셋째, 안전효능감과 안전사고 예방행동의 관계에 대해 살펴보았다. 넷째, 부모가 청소년 자녀의 안전에 미치는 영향에 대해 간략히 정리하였다. 즉 부모의 사회경제적지위와 부모의 안전효능감 및 부모의 안전사고 행동이 청소년 자녀의 안전효능감 및 안전사고 행동과 어떠한 관련이 있는가를 살펴보았다. 이러한 선행연구들에 대한 개관을 통해, 다섯 가지 측면에서 종합적으로 논의하고 후속연구를 위한 시사점을 살펴보았다: 1) 청소년 발달과정에서 안전효능감의 감소 경향성, 2) 안전효능감과 안전행동의 관계, 3) 토착심리학적 접근의 필요성, 4) 부모가 청소년의 안전효능감과 안전행동에 미치는 영향, 5) 한국 사회문제 맥락속에서의 접근: 인간 생명 존엄성에 대한 인식과 사회 전반의 신뢰 구축.

• 한국안전학회지
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• 제25권1호
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• pp.72-78
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• 2010

Laboratory accidents have happened incidently. However, laboratory safety management has been out of concerns for a long time. At last, the Korean government established an act called Establishment of safe environment of laboratories in 2005. To support the act and to establish policies on laboratory safety management，a national-wide survey was conducted for the 74 research organizations sampled and their 201 laboratories. For the survey, a safety management checklist with 114 items grouped into 20 categories was developed By using this checklist, safety expert groups investigated the laboratories and evaluated them on the five-point Likert scale. A statistical analysis was conducted to compare the safety management status between different research organization types and between different research fields. The resultsmanaw that the universities are in significant lower level on safety institution and safety education than the public research organizations and theare poration research organizations. In terms of research field, chemistry/chemical engineering laboratories generallymanaw higher level compared with theaothers. Conversely, biology/life science laboratories marked low levels in a number of checklist items.

• 가정과삶의질연구
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• 제28권5호
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• pp.53-66
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• 2010

The purpose of this study is to investigate the influence of family-friendly life environment factors including local community's living environment satisfaction (safety, convenience, comfort, accessibility, exchange of neighbor satisfaction), family support facility satisfaction, family support program satisfaction and nurture and education environment satisfaction, and local community's living information accessibility on the effect of multiple roles of married men and women with children. Data were collected from 380 married men and women with children located Seoul, GyeongGi-Do, ChungCheongBuk-Do, and KyungSangNam-Do. The results show that, first of all, related to general trend of role satisfaction and role strain, the subjects have higher experience of role satisfaction than role strain. Secondly, the variables of social demography, such as monthly income, non-regular full-time working system, white collar occupation, number of children and level of education, and living environment variables, such as satisfaction of living environment stability and satisfaction of neighbor exchange in living environment were significantly related to role strain. Thirdly, social demography variables, such as average monthly earnings, gender (male), non-regular part-time working system, satisfaction of stability in living environment, and satisfaction of convenience in living environment were significantly related to role strain.

• 대한가정학회지
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• 제33권5호
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• pp.13-25
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• 1995

The purpose of this study was to understand the variables affecting the dual role strain and the satisfaction with the life of working mothers, Based on this result, the family policies for the balance between family life and work were proposed. 1) For the family, husband's psychological and behavioral supports were needed to wives as workers. 2) For business, the child care support and services have to be provided for children of both male and female employees. 3) For the government, the policies can be proposed : child care center or support and service in the business, child care program after school hours, insurance policies for child safety, deduction in income taxes corresponding expenditures for child care service.

• KEPCO Journal on Electric Power and Energy
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• 제2권4호
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• pp.583-588
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• 2016

The high-temperature steam pipes of thermal power plants are subjected to severe conditions such as creep and fatigue due to the power plant frequently being started up and shut down. To prevent critical pipes from serious damage and possible failure, inspection methods such as computational analysis and online piping displacement monitoring have been developed. However, these methods are limited in that they cannot determine the life consumption rate of a critical pipe precisely. Therefore, we set out to develop a life assessment system, based on a three-dimensional piping displacement monitoring system, which is capable of evaluating the life consumption rate of a critical pipe. This system was installed at the "M" thermal power plant in Malaysia, and was shown to operate well in practice. The results of this study are expected to contribute to the increase safety of piping systems by minimizing stress and extending the actual life of critical piping.