• Title/Summary/Keyword: Safety Value

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A Proposal of the Quality Models and Additive Value Degrees for the Barrier Free Design in the Rural Campus Design Value Engineering (지방대학 캠퍼스의 Barrier Free Design을 위한 설계VE 품질모델 및 가중치 제안)

  • Min, Kyung-Seok
    • Journal of the Korean Institute of Rural Architecture
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    • v.8 no.1
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    • pp.9-16
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    • 2006
  • In campus project, "Barrier Free Design" is the essential part for the handicapped. It is necessary to make a quality model that choose effective design value engineering objects. So more effective models, this study examine requests of the university students. Checked items are classified into four groups that movement, guidable, safety and territoria parts, and each groups are also divided into detailed items for basic decisional elements. When basis points sets 10, it can be divided that movement parts 2.93pts, guidable parts 2.31pts, safety parts 2.41pts and territoria parts 2.35pts. in this results, we can make additive value and quality model for barrier free design in campus design value engineering.

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A Study of Limit State Design Method in Soil Slope (토사면의 한계상태 설계법에 관한 연구)

  • Joung, Gi-Hun;Kim, Jong-Min;Jang, Bum-Su
    • Proceedings of the Korean Geotechical Society Conference
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    • 2005.03a
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    • pp.129-136
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    • 2005
  • The deterministic analysis method has generally used to evaluate the slope stability and it evaluates the slope stability with decision value that is a representative value of design variables. However, one of disadvantages in the deterministic approach is there is not able to consider the uncertainty of soil strength properties, even though it is the biggest influential parameter of the slope stability. On the other hand, the limit state design(LSD) can take a consideration of uncertainties and computes both the reliability index and the probability of failure. LSD method is capable of overcoming the disadvantages of deterministic method and evaluating the slope stability more reliably. In this study, both the mean value and standard deviation of the internal land's representative soil strength properties applied to process the LSD method. The major purpose of this study is to gauge the general applicability of the limit state design in soil slope and to weigh the comparative validity of the proposed partial safety factor. In order to reach the aim of this study, the partial safety factor and resistance factor which totally satisfied the slope's overall safety factor were calculated by the load and resistance safety factor design (LRFD).

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ANALYSIS OF UNCERTAINTY QUANTIFICATION METHOD BY COMPARING MONTE-CARLO METHOD AND WILKS' FORMULA

  • Lee, Seung Wook;Chung, Bub Dong;Bang, Young-Seok;Bae, Sung Won
    • Nuclear Engineering and Technology
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    • v.46 no.4
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    • pp.481-488
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    • 2014
  • An analysis of the uncertainty quantification related to LBLOCA using the Monte-Carlo calculation has been performed and compared with the tolerance level determined by the Wilks' formula. The uncertainty range and distribution of each input parameter associated with the LOCA phenomena were determined based on previous PIRT results and documentation during the BEMUSE project. Calulations were conducted on 3,500 cases within a 2-week CPU time on a 14-PC cluster system. The Monte-Carlo exercise shows that the 95% upper limit PCT value can be obtained well, with a 95% confidence level using the Wilks' formula, although we have to endure a 5% risk of PCT under-prediction. The results also show that the statistical fluctuation of the limit value using Wilks' first-order is as large as the uncertainty value itself. It is therefore desirable to increase the order of the Wilks' formula to be higher than the second-order to estimate the reliable safety margin of the design features. It is also shown that, with its ever increasing computational capability, the Monte-Carlo method is accessible for a nuclear power plant safety analysis within a realistic time frame.

A Study on Simulation Analyze on Scheduling Application to Lifetime Value(LTV) (LTV(Lifetime Value)를 적용한 일정계획의 시뮬레이션 분석에 관한 연구)

  • 양광모;박재현;강경식
    • Journal of the Korea Safety Management & Science
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    • v.6 no.1
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    • pp.219-228
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    • 2004
  • We can be acquire the conformation about on the due date of supplier by using the A TP(A vail able to Promise) function of management about real and concurrent access on the supply chain, also decide the affect about product availability due to forecasting or customer's orders through the A TP. Under the these environments, defines the A TP rule that can improve the customer value and data flow related the LTV(Life Time Value) and builds on a algorithm. In this paper, It consolidates the necessity on a LTV (Life Time Value) and analyzes data which is concerned of Customer Value. Under the these environments, defines the LTV rule that can improve the customer value. And then, Scheduling plays an important role in shop floor planning. Therefore, this study tries to proposed that Scheduling by customer needs group for minimizing the problem.

A Study for Establishment to the hierarchy of Housing Values (주거가치 체계 정립을 위한 연구)

  • 최목화
    • Journal of the Korean Home Economics Association
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    • v.25 no.4
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    • pp.85-97
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    • 1987
  • The purpose of this study was to establish the hierarchy of housing values. Housing values were hygienic, safety, convenience of near environment, social affiliation oriented, self-actualization, aesthetic, and prestige. A final instrument was developed through two stage pilot surveys. The respondents were 1292 homemakers of middle and high economic class in Seoul and Daejeon, selected through stratified randon sampling technique. Data were collected during March and April 1986, and analyzed using SPSS and SAS computer packages. The statistics used were frequency, percentage, Guttman's reproducibility coefficient. The major finding were as follows; The hierachy of housing values was established with Guttman's coefficient of reproducibility. 94. Those were hygienic value, safety value, convenience of near environment value, aesthetic value, social affiliation oriented value, self-actualization value, prestige value in order.

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Focusing on Mediating Effect of Social Outcome between Value Realization Efforts and Economic Outcome of Social Enterprises (사회적기업의 가치 실현 노력이 사회적 성과를 매개로 경제적 성과에 미치는 영향)

  • Cho, Young-Ju;Jung, Young-Deuk
    • Journal of the Korea Safety Management & Science
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    • v.24 no.2
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    • pp.105-111
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    • 2022
  • This study aims to analyze mediating effect of social outcome between value realization efforts and economic outcome of social entrprises. Data for the analysis is collected from Social Enterprise Promotion Agency. The results of anaylsis are first social value realization efforts had no positive effect on economic outcome of the social enterprises. But social outcome had a significant mediating effect between social value realization efforts and economic outcome. Through this, it was confirmed that although a social enterprise is a hybrid organization that must pursue both social and economic outcome, social value realization efforts go through a social outcome that affects economic outcome. mediating social performance This is expected to have implications for the role of social value realization efforts and social outcome in order to increase the economic outcome of social enterprises.

A Study on the Safety Evaluation of Design for Piping Materials (I) (배관용재료의 설계시 안전성 평가에 관한 연구(I))

  • 김복기
    • Journal of the Korean Society of Safety
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    • v.10 no.2
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    • pp.3-9
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    • 1995
  • Several piping material test methods have been developed as a result of advances in elastic-plastic fracture mechanics. It's known that, crack propagation of the materials strongly governed by the $J_{Ic}$ value. But the value is still difficult to be obtained because of it's complicate and troble-some determination process. In this paper, to prove the validity of the developed test procedure a series of tests were peformed at various temperatures and for different material directions. directions.

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Safety Organization

  • 김용욱
    • Journal of the Korean Society of Safety
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    • v.2 no.3
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    • pp.44-53
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    • 1987
  • The effective production executive knows the value of organization. He realizes fully that no objective can be attained, whether it be for production, inspection, training, seling, or accident prevention without The effective production executive knows the value of organization. He realizes fully that no obifctive can be attained, whether it be for production, inspection, training, seling, or accident prevention without organization, and that an objective of accident prevention or elimination does not come about unless all levels of the organization are "turned in" toward that objecitive.

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A Study on the Consumer Insights of Active Safety Features (능동안전장치의 소비자 인식 연구)

  • Sim, Jihwan;Lee, Hwasoo;Yim, Jonghyun
    • Journal of Auto-vehicle Safety Association
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    • v.8 no.2
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    • pp.6-10
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    • 2016
  • The objective of this paper is to understand value of active safety features on the customer perspective. In this study, 30 participants who don't have experience with active safety features were recruited and asked for preference, usefulness and consideration of each active safety feature after driving evaluation by them. Through this research, the preference of active safety features were analyzed and which of active safety features were the most useful and the most considered by customer when they purchase new vehicle. As a result, adaptive cruise control and side blind zone alert were the most strongly preferred and considered features by respondents and it means that respondents wanted comfort environment while driving and seemed to value features that compensated for limited visibility. On the other hand, active safety features that warned driver without control of the vehicle was deemed generally less desirable such as lane departure warning and forward collision alert. But autonomous emergency braking was higher than the other active safety features with only warning even if they did not have experience for it while this test. They thought it will be helpful in case of front-end collision situation even they just listened description before the test.

A System Dynamics View of Safety Management in Small Construction Companies

  • Guo, Brian H.W.;Yiu, Tak Wing;Gonzalez, Vicente A.
    • International conference on construction engineering and project management
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    • 2015.10a
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    • pp.92-96
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    • 2015
  • Due to unique characteristics of small construction companies, safety management is comprised of complex problems (e.g., resources constraints, a lack of formalized management structures, low level of management safety commitment etc.). In order to understand causal interdependencies between safety factors at different system levels (regulation, organization, technical and individual), this paper aims to develop a system dynamics (SD) model of safety management in small construction companies. The purpose of the SD model is to better understand why small construction companies have low level of safety performance. A causal loop diagram (CLD) was developed based on literature, with an attempt to map causal relationships between variables. The CLD was then converted into stock and flow diagram for simulation. Various tests were conducted to build confidence in the model's ability to represent the reality. A number of policies were analyzed by changing the value of parameters. The value of a system dynamics approach to safety management in small construction companies is its ability to address joint effects of multiple safety risk factors on safety performance with a systems thinking perspective. By taking into account feedback loops and non-linear relationships, such a system dynamics model provides insights into the complex causes of relatively poor safety performance of small construction companies and improvement strategies.

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