• Title/Summary/Keyword: Safety problem

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Estimation of running safety of cast steel bogie used on container carrier car (주강대차 컨테이너화차의 주행안전성 평가)

  • Ham Young-Sam;Hong Jai-Sung;Chung Woo-Jin;Oh Il-Geun
    • Proceedings of the KSR Conference
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    • 2004.10a
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    • pp.133-138
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    • 2004
  • Domestic freight car holding amount is possessing much amount than other vehicle model about 14,000. Problem is happening in bogie device of cast steel structure because is structure that there are many wear departments. Therefore, the KNR is restricting running speed of empty car by 70km/h low. In this research, presented speed elevation way as dynamic characteristic analysis result that use ADAMS and confirm running safety by main line test.

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A Study on the Problems and the Implementation Phases in Building CRM (CRM구축에서의 문제점과 중점구축방안에 관한 연구)

  • 윤지태;박재현;김봉진
    • Journal of the Korea Safety Management & Science
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    • v.3 no.1
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    • pp.25-34
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    • 2001
  • With the help of the Internet, communication with customers and the frequency and speed of the problem solving has improved greatly At this point mayor enterprises are paying much attention to CRM and their related markets are expanding rapidly I'll give a bnef introduction to the CRM system and go Into the problems that should be considered and which phase to emphasize when building this system.

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Adaptive EWMA Feedback Process Adjustment (적응적 EWMA 피드백 공정 조정)

  • 고용해;이성철;전상표
    • Proceedings of the Safety Management and Science Conference
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    • 1999.11a
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    • pp.237-246
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    • 1999
  • An important problem in process adjustment using feedback is how often to sample the process and when to apply an adjustment. Schemes designed to minimize the overall cost. The cost taken the frequency with which they require observations to be made, and the resulting overall length of time between adjustment. In this article, the process adjustment which is based on the adaptive EWMA forecasts are derived. An example is presented to improve confirm standard varation through the analysis of a data series.

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A Study on Determining Single-Center Scheduling using LTV(LifeTime Value) (고객 생애 가치를 활용한 단일 창구 일정계획 수립에 관한 연구)

  • 양광모;박재현;강경식
    • Proceedings of the Safety Management and Science Conference
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    • 2003.05a
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    • pp.285-290
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    • 2003
  • There is only one server available and arriving work require services from this server. Job are processed by the machine one at a time. The most common objective is to sequence jobs on the severs so as to minimize the penalty for being late, commonly called tardiness penalty Based on other objectives, many criteria may serve as s basis for developing job schedules. Therefore, this study tries to proposed that Scheduling by customer needs group for minimizing the problem and reducing inventory, product development time, cycle time, and order lead time.

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Customer Group Analysis Using SN Ratio for Efficiency CRM (효율적인 CRM 운영을 위한 SN비를 활용한 고객 집단 분석에 관한 연구)

  • 양광모;강경식
    • Proceedings of the Safety Management and Science Conference
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    • 2003.05a
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    • pp.291-297
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    • 2003
  • In fact, some cases that successfully introduced CRM show that CRM is migrating from small scale which is typical when introduced to larger scale through various tests. The process also comprises all strategic planning, capital investments, management decisions, and tasks necessary to create a new product. manufacturing processes must be created so that the product can be produced in the product facility Therefore, this study tries to segment customer for the sieving the problem. And it make efficient customer management.

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Probability Calculation of Component or Subsystem Failure used by Bayes Formula (베이즈 정리를 이용한 부품 또는 서브시스템의 고장 확률 계산)

  • 이성철
    • Journal of the Korea Safety Management & Science
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    • v.3 no.2
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    • pp.123-131
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    • 2001
  • Reliability calculation of a system is frequently required in industrial, military, and everyday life situations. For such a calculation, it is necessary to specify the configuration of components and subsystems, the failure mode of each component, and the states in which the system is classified as failed. In this paper, we are primary interested in the time to the first failure of a system. And we discuss failure probability of coherent system under various condition, especially focus on probability calculation of subsystem failure before system failure used by Bayes formula. Problem statement and general applications illustrated by several examples.

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State-of-the-Art and Perspectives of the Industrial Accident Compensation Insurance System in Korea (우리나라 산재보험의 보상제도의 현황과 발전방향)

  • 이윤혁;이상도
    • Journal of the Korean Society of Safety
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    • v.13 no.3
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    • pp.143-162
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    • 1998
  • There are two ways to prevent labor from Industrial accident One is pre-prevention, another is compensation. Onless It happens the compensation problem from The pre-prevention, It will be best way to solve. To prevent lobar widely first, the application range should be wide which is base of repayment second, assoradiy to reconsideration of apportionment properly The Max-Min limitative cost of compensative should be paid, one the other hands, The lay-off payment of limitative and The fixed payment of Funeral should be introduce Third, The specialization of examination.

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The Development of Fuzzy to Decide System Failure Rate (시스템 고장률 결정을 위한 Fuzzy Model)

  • 김병석;김정한
    • Journal of the Korean Society of Safety
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    • v.8 no.4
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    • pp.91-94
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    • 1993
  • The main purpose of this study was to develop fuzzy models in order to decide system failure rate in industrial accident prevention. The purposed linguistic approach uses the Zadeh's concept of a linguistic variable with value which are not number. The problem of measurement Is the assignment of numbers to reprresnt properties of the involved events, object, or situation. Thus, in this study, part standard compatibility function was used.

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Development of Maintenance Sequence System by Using Modified FMEA and CBR (FMEA 개념과 사례베이스추론 기법을 이용한 보전작업순서결정시스템의 개발)

  • 김광만
    • Journal of the Korea Safety Management & Science
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    • v.3 no.4
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    • pp.103-112
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    • 2001
  • In Factory, as the number of machine is increased the more maintenance efforts are necessary. Multi maintenance issues may occur at a certain time and the determination of maintenance sequence is needed. In this study, we first compare the priority of machines and the impact value using modified FMEA(Failure Mode Effect and Analysis) method. Also, CBR(Case-based Reasoning) approach is applied to retrieve similar fault cases of current machine problem. The proposed methodology will be useful to implement decision support system of maintenance sequence for CMMS/EAM (Computerized Maintenance Management System/Enterprise Asset Management).

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