• Title/Summary/Keyword: JIT

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A Study on directions of Developing a Transportation and Procurement System for JIT Management of Curtain Walls in High-Rise Building Construction (커튼월 공사의 적시생산(JIT)관리를 위한 양중 조달 시스템 개발방향에 관한 연구)

  • Yang Jong-Youb;Ahn Byung-Ju;Baek Jong-kun;Kim Jae-Jun
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • autumn
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    • pp.371-374
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    • 2002
  • Purpose of this study is to suggest the directions for development of a transportation and procurement system for JIT management of curtain walls. First, this study looks over the concept of JIT, and grasps the characteristics of the material and the problems of logistics in the construction field through the field and literature survey. And then, it develops countermeasures for the problems and with this, it suggests the directions for development of a transportation and procurement system for JIT management.

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Inhibitory Effects of Jojoongikgi-tang on the Secretion of PGE2 and NO and Cytokines in LPS-stimulated BV2 Microglial Cells

  • Lee, Jun-Moon;Lyu, Sun-Ae;Lee, Seung-Yeon;Kim, Bo-Kyung;Ko, Woo-Shin
    • The Journal of Pediatrics of Korean Medicine
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    • v.21 no.2
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    • pp.97-107
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    • 2007
  • Objectives This experiment is about Jojoongikgi-tang(JIT) exerts anti-inflammatory effects in BV2 microglial cells, and the effect of JIT on Nitric oxide(NO) production in lipopolysaccharide(LPS)-stimulated BV2 microglial cells were also demonstrated. Methods To investigate the anti-inflammatory effects of JIT, NO production, expression level of iNOS mRNA, PGE2 synthesis, expression COX-2 mRNA, cell viability, $TNF-{\alpha}$ mRNA expression were examined. Results The expression level of inducible nitric oxide synthase(iNOS) was decreased by JIT, and the production of Prostaglandin E2(PGE2) and the expression of Cox-2 mRNA also were inhibited by JIT. Proinflammatory mediators, such as $TNF-{\alpha}$, $IL-1{\beta}$, IL-12, were inhibited by JIT in a dose-dependent manner. Conclusions JIT have anti-inflammatory effects in BV2 microglial cells and could be used in inflammatory disease.

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A Theoretical Study on the Toyota Production System and New JIT (도요타 생산방식(TPS)과 NEW JIT에 관한 이론적 연구)

  • Lim, Jae-Hwa;Mok, Jin-Hwan
    • 한국산학경영학회:학술대회논문집
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    • 2005.11a
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    • pp.29-46
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    • 2005
  • Recently, TPS is one of the hot issues which enterprises and manufacturing related people were greatly concerned. TPS is very representative of Japanese production system. And TPS have contributed to the advance of industrial engineering. This study highlights the limitation and unsolved problems of presented TPS, through understanding the basic principles and characteristics and application process of TPS. To be continuously developing and competitive system in the future, we suggest New JIT System to complement current TPS system. New JIT is a customer oriented system. For the customer satisfied quality management, renovate business process in production, development and sales area. It has hardware and software system. Hardware system is consists of TMS, TDS, TPS. Software system Is scientific SQC utilized TQM. For the advanced next generation manufacturing management system, we should develop New JIT system.

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A Theoretical Study on the Toyota Production System and New JIT (도요타 생산방식(TPS)과 NEW JIT에 관한 이론적 연구)

  • Lim, Jae-Hwa;Mok, Jin-Hwan
    • Korean Business Review
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    • v.19 no.1
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    • pp.93-114
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    • 2006
  • Recently, TPS is one of the hot issues which enterprises and manufacturing related people were greatly concerned. TPS is very representative of Japanese production system. And TPS have contributed to the advance of industrial engineering. This study highlights the limitation and unsolved problems of presented TPS, through understanding the basic principles and characteristics and application process of TPS. To be continuously developing and competitive system in the future, we suggest New JIT System to complement current TPS system. New JIT is a customer oriented system. For the customer satisfied quality management, renovate business process in production, development and sales area. It has hardware and software system. Hardware system is consists of TMS, TDS, TPS. Software system is scientific SQC utilized TQM. For the advanced next generation manufacturing management system, we should develop New JIT system.

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A study stack allocation on JIT Code Generator for reducing register load traffic (레지스터 로드 트래픽 감소를 위한 JIT Code Generator에 스택할당 정책 적용 방안 연구)

  • Song, Kyung-Nam;Kim, Hyo-Nam;Won, Yoo-Hun
    • Proceedings of the Korea Information Processing Society Conference
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    • 2001.10b
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    • pp.1541-1544
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    • 2001
  • Java virtual machine의 성능을 향상시키기 위해 "JIT(Just-in-Time)"code generator가 고안되었다[3], JIT code generator는 스택기반의 자바 바이트 코드를 레지스터 기반의 native machine code로 변환해 주는 역할을 수행하여 바이트 코드의 번역시간을 줄여준다. 그러나 JIT 는 많은 레지스터의 사용을 야기시키므로 효율적인 레지스터 allocation 정책이 필요하고 스택과 레지스터 간의 traffic 을 가중시킨다. 그러므로 본 논문에서는 자바 바이트 코드의 효율적인 stack allocation 정책을 JIT code generator에 적용함으로 레지스터와의 traffic을 줄이는 방법을 제시하였다.

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A Study on the Hybrid Production System of GT, MRP and JIT (GT, MRP, JIT 혼합생산시스템에 대한 연구)

  • 이현용;이승우;강경식
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 2000.04a
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    • pp.189-192
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    • 2000
  • 생산성 향상, 재고의 최소화, 납기일의 준수, 자원의 최대활용등을 위해 그동안 많은 생산관리 기법이 제시되어 왔으며 그중 GT, MRP, JIT 기법이 가장 많이 사용되고 있다. 각각의 시스템은 모두 장단점을 가지고 있기 때문에 이들 시스템을 혼합하면 상호간의 단점을 보완할 수 있을 것이다. GT 기법은 부품의 유사성을 이용한 기존자료의 검색 및 그룹가공을 통한 생산성 향상에 유용하며, MRP 기법은 기초자료를 이용하여 생산 및 자재계획을 동시에 수립할 수 있기 때문에 계획수립에 유용하며, JIT 기법은 낭비의 제거, 재고의 제로화, 간판을 이용한 현장관리 등을 할 수 있기 때문에 실시단계에 유용하다. 본 연구에서는 GT, MRP, JIT 기법을 비교 분석하고 이를 상호 보완할 수 있는 알고리즘을 개발하여 GT, MRP, JIT 혼합 생산시스템의 모델을 제시하고자 한다.

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A Study on Structuring the Hybrid Production System of MRP, JIT and OPT (MRP, JIT그리고 OPT의 Hybrid생산시스템 구현에 관한 연구)

  • 조성훈;안동규;임명준
    • Journal of the Korea Society of Computer and Information
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    • v.4 no.1
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    • pp.54-61
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    • 1999
  • The MRP, OPT and JIT systems have the respective limitations to become the suitable production management systems of the future. Therefore it is highly requested to develop an integrated production management system by the hybridization of those production systems. Accordingly, this study has focused its hybrid model using MRP, JIT and OPT. There has been many efforts in comparing and analyzing the usefulness and the limitations of those production systems and applying the usefulness to the maximum which improving and supplementing the weakpoints of respective systems. In this respect, this study develop the hybrid simulation model, and this hybrid model are evaluated and compared with MRP(Push system) and JIT(Pull system) by using a simulation.

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A study on MRP/JIT system for vendor management

  • Lee, Soon-Yo;Yang, Seun-Mo
    • Korean Management Science Review
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    • v.5 no.2
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    • pp.57-70
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    • 1988
  • This paper examines both MRP and JIT for reducing WIP(Work In Process). The MRP/JIT system is suitable for multi-model, small-production manufacturing comparies in Korea because of the short delivery distance and low risk of accident during delivery. The objective of this paper is to manage vendors effectively by informing supply points and quantity of parts of vendors with MRP and JIT.

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A Study of Hybrid Production System using GT, MRP & JIT (GT, MRP, JIT의 혼합생산시스템 구축에 관한 연구)

  • 이현용;송준엽;강경식
    • Proceedings of the Safety Management and Science Conference
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    • 2001.05a
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    • pp.185-188
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    • 2001
  • Many production management systems for increasing productivity, minimizing inventory, keeping due dates and maximizing use of resources have been proposed, and GT, MRP and JIT are frequently used among these systems. The three systems have merits and demerits through comparing with each other. Because each system has mutual dependence, a hybrid production system is necessary for using their merits maximally. In this study, a hybrid production system is designed by combining GT, MRP and JIT, which is suitable in the domestic production system.

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CIM Implementation through JIT and MRP Integration (JIT 와 MRP 통합에 의한 CIM 추진 사례연구)

  • Lee, Young-Q.;Shin, Hee-Jun;Kim, Myong-Sun
    • IE interfaces
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    • v.7 no.3
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    • pp.39-51
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    • 1994
  • A CIM implementation case is introduced in this paper. It is accomplished through the integration of two fundamental approaches to production planning and control; JIT and MRP. The resultant system is a hybrid where some JIT methodologies prevail, but the benefits of the MRP are also required. A new BOM structure called 'Family-BOM' is designed for the load leveled production with small lot size and the synchronized production. The overall production planning concept is described with actual data.

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