• The Journal of the Convergence on Culture Technology
• /
• v.3 no.3
• /
• pp.43-49
• /
• 2017

The purpose of this study is to study the standardization of the core business process in the chemical manufacturing industry and to establish a production information management system for the purpose of establishing the production information management system that can achieve mid -To be applied. The development methodology for the standardization of the chemical manufacturing information system is applied to the production information management system development methodology (PSDM) that was developed and developed by the Agency for Technology and Information Promotion of Small and Medium Enterprises. The standardization target is the system structure, It is a core business process that becomes a skeleton during construction. In this study, the chemical manufacturing SMEs and related professional IT companies who want to build the production information management system can apply the standardized core business process more effectively to build the system more effectively, and provide ease of installation and reliability to the system, In order to maximize the utilization of processes, follow-up education training and maintenance measures are suggested. Applying the results of this study, it is possible to eliminate the unreasonable elements of the production process, improve the quality of production product, and reduce production cost.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.33 no.2
• /
• pp.365-372
• /
• 2004

The purpose of this study was to implement HACCP system to foodservice of W and D elementary schools with joint-lunch management system in Kyungsan area. Steamed rice with squid was selected and Control Action, Monitoring Procedure and Control measure were identified based on HACCP flowchart to produce safe and healthy food. It was suggested that frozen squid must be thawed under the cold running city water and kept temperature below 1$0^{\circ}C$ and receiving/thawing procedure has to be done within 30 min. Raw vegetables must be washed under three-tube wash stand and whole prepreparation procedures should be done in 20 minutes. Clean and sanitize all the equipment and utensils before and after handling squid. Knives and cutting boards for vegetable and squid should be classified. Sauce for steamed rice with squid should be heated about 21 minutes to reach the temperature of 94$^{\circ}C$ before serving and internal temperature of food must be kept above 84.4$^{\circ}C$ during serving. The ideal temperature of kitchen should be remained 15∼18$^{\circ}C$. The underground water has to be excluded to minimize the risk of contamination in the foodservice facility and the prepreparation place must be separated with cooking place. Also, Personal hygiene Practice should be check in each stage. Further, additional research needs to be conducted to determine models for HACCP implementation for different menu.

• The Journal of the Korea Contents Association
• /
• v.7 no.12
• /
• pp.333-345
• /
• 2007

In the recent years, the companies have manually recorded a production status in a work diary or have mainly used a bar code in order to collect each process's progress status, production performance and quality information in the production and logistics process in real time. But, it requires an additional work because the worker's record must be daily checked or the worker must read it with the bar code scanner. At this time, data's accuracy is decreased owing to the worker's intention or mistake, and it causes the problem of the system's reliability. Accordingly, in order to solve such problem, the companies have introduced RFID which comes into the spotlight in the latest automatic identification field. RFID is an automatic identification technology by radio communication technology that allows us to identify or record information without contacting the corresponding object, and as Gen2 and EPCIS, EPCglobal's standard tag for RFID, have recently been established, it will be introduced to the whole computation industry. This study suggests RFID type Modeling Notation for analyzing logistics flow to improve MES focusing on extended model of EPCIS, and EPCISEvent Template in manufacturing industry.

• Korean Journal of Construction Engineering and Management
• /
• v.5 no.4 s.20
• /
• pp.71-78
• /
• 2004

In this study, the concept of Just-In-Time, Lean Construction and Supply Chain Management have been applied to furniture works of high-rise residental building. For the purpose of systematic furniture work planning, it should be established to analyse furniture-work process from design phase through contract, and procurement to construction phase. The analysis of process and data for furniture-work provides the roles of conducting subjects and presents management items at each phase. This proposal will provide the systematic furniture-work managements and reduce construction time and cost, and also raise the quality of furniture works.

• Journal of the Korea Society for Simulation
• /
• v.20 no.3
• /
• pp.119-127
• /
• 2011

Overhaul and repair service means the sequential processes of disassembly, repair and reassembly for a product which has been used for a long time. Overhaul is required for the companies producing airplanes, ships, trains, military weapons and heavy industrial equipments which are very expensive and have a long life cycle. The most important performance measure of the overhaul repair shop is usually the lead time. Thus, how to design the manufacturing system to meet the delivery date is a major concern in overhaul repair shop. This paper introduces the case study of an overhaul repair shop producing military weapon systems with the 3D simulation tool, $QUEST^{TM}$. At first, the characteristics of overhaul shop and what should be considered for simulation modeling are explained. Then, various simulation scenarios including two types of disassembly systems, one is flow line system and the other is cell system, are discussed with the results of simulation experiments.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.18 no.11
• /
• pp.110-117
• /
• 2017

In the construction of high-rise residential buildings in which the finishing works are done repetitively in each housing unit, the construction period and cost can be reduced, while maintaining the quality, if the work process is properly managed in order for the resources to be input continuously. Time management methods such as the Bar Chart, CPM and LOB are not appropriate, due to the difficulties involved in the diagraming of repetitive works and applying them to the project. The Tact method also has difficulties in maintaining a constant work flow and needs significant effort and cooperation from the subcontractors to allocate the resources consistently. Partitioning, base works for finishing, floor mortar plastering and the final finishing work are done sequentially in residential buildings projects, and there are many repetitive activities which differ in terms of the work method, work area and productivity. If these repetitive activities are synchronized or converged toward the last work area, the goal of process management can be achieved effectively. Therefore, a process planning method for the finishing works of residential building projects is proposed, which takes into consideration elements, such as the sequential relation between the activities in each housing unit and classification of repetitive works in terms of their management method, work area and production rate, for the continuous input of resources into the housing units.

• Proceedings of the Korean Institute Of Construction Engineering and Management
• /
• autumn
• /
• pp.490-493
• /
• 2002

There have to be a pooled procurement in order to control construction in every stage. And we need also efficient supply chains to utilize the process. Researching and developing the method, which make it possible the supply chain management by modeling for Internet-enabled pooled procurement in construction, through breakdown in materials is currently in-progress the inside and out side of country. The objective of this paper is to find a reform while modeling the production process of cable duct moreover understanding the wasting factors in each step.

• Journal of Korean Society for Quality Management
• /
• v.47 no.4
• /
• pp.823-835
• /
• 2019

Purpose: This study deals with a production planning and scheduling problem to minimize the total weighted tardiness on hybrid flow shop with sets of non-identical parallel machines on stages, where parallel machines in the set are dedicated to perform specific subsets of jobs and sequence-dependent setup times are also considered. Methods: A two-stage approach, that applies MILP model in the 1st stage and dispatching rules in the 2nd stage, is proposed in this paper. The MILP model is used to assign jobs to a specific machine in order to equalize the workload of the machines at each stage, while new dispatching rules are proposed and applied to sequence jobs in the queue at each stage. Results: The proposed two-stage approach was implemented by using a commercial MILP solver and a commercial simulation software and a case study was developed based on the spark plug manufacturing process, which is an automotive component, and verified using the company's actual production history. The computational experiment shows that it can reduce the tardiness when used in conjunction with the dispatching rule. Conclusion: This proposed two-stage approach can be used for HFS systems with dedicated machines, which can be evaluated in terms of tardiness and makespan. The method is expected to be used for the aggregated production planning or shop floor-level production scheduling.

• Proceedings of the KIEE Conference
• /
• 1999.07b
• /
• pp.945-947
• /
• 1999

첨단의 자동화 시스템을 구축하기 위해서는 각 필드기기에서 생산되는 정보들을 적절한 형태로 가공하여 적시에 필요한 공정으로 제공하여 줄 수 있는 지능형 센서 및 필드기기의 도입이 필요하다. 이러한 필드기기들이 유기적으로 정보를 교환하고 공유하기 위해서는 통신망 시스템을 구축할 필요가 있다. 필드버스는 자동화 및 분산 제어 시스템의 컴퓨터 통신망 계층구조에서 최하위 계층 기기들 간에 실시간 통신을 제공하는 산업용 통신망이다. 본 연구에서는 통신용 프로세서인 Mc68360을 기반으로 하여 필드버스의 일종인 Profibus의 물리계층과 데이터링크계층 프로토콜을 구현하였다. 물리계층은 프로세서의 UART 통신 기능과 RS-485칩을 사용하여 구현하고, 데이터링크계층 프로토콜은 프레임 분석과 송수신, 에러처리, 흐름제어, 매체접속권한 관리 등의 기능을 소프트웨어로 구현하였다. 또한 지능형 센서 본래의 목적중의 하나인 원격관리 기능을 위하여 각 필드기기의 노드 주소, 타이머 값 등의 통신 파라미터를 원격 마스터에서 설정할 수 있도록 관리계층의 기능을 추가하였다. 본 연구에서는 각각 하나의 노드기능을 담당하는 여러 개의 보드들로 구성된 testbed를 구축하고, 다양한 통신환경에서 초기화, 정상, 비정상 상태 등의 동작을 실험하였으며, 이를 통하여 지능형 센서용 필드버스의 데이터링크계층 프로토콜이 정상적으로 동작됨을 확인하였다.

• Journal of the Korea Institute of Building Construction
• /
• v.20 no.3
• /
• pp.245-252
• /
• 2020

Synthetic resin formwork is made of lightweight high-density polyethylene(HDPE). This study used a process flow chart that satisfies the system boundary (such as Cradle-to- Product shipmen ) required by ISO FDIS 13352 to evaluate the entire process of synthetic resin foam using. The entire life cycle inventory (LCI) database calculated from input energy sources, materials used, transportation methods, and manufacturing processes at the system boundary was analyzed. Based on the environmental impact assessment index methodology of the Ministry of Environment from the LCI data analysis of synthetic resin formwork, the environmental impact assessment was carried out through classification, normalization, characterization, and weighting process. The experimental results are as follows the amount of CO₂ (carbon) emission considering the number of conversions was about 32% lower than that of the Euroform. This shows that the use of synthetic resin formwork reduces material production by half compared to Euroform and reduces CO₂ (carbon) emissions.