• Industrial Engineering and Management Systems
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• 제7권2호
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• pp.160-170
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• 2008

This paper proposes a mathematical model for converting conveyor assembly line to cellular manufacturing in complex production environments. Complex production environments refer to the situations with multi-products, variant demand, different batch sizes and the worker abilities varying with work stations and products respectively. The model proposed in this paper aims to determine (1) how many cells should be formatted; (2) how many workers should be assigned in each cell; (3) and how many workers should be rested in shortened conveyor line when a conveyor assembly line should be converted, in order to optimize system performances which are defined as the total throughput time and total labor power. We refer the model to a new production system. Such model can be used as an evaluation tool in the cases of (i) when a company wants to change its production system (usually a belt conveyor line) to a new one (including cell manufacturing); (ii) when a company wants to evaluate the performance of its converted system. Simulation experiments based on the data collected from the previous documents are used to estimate the marginal impact that each factor change has had on the estimated performance improvement resulting from the conversion.

• 한국안전학회지
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• 제28권5호
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• pp.61-65
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• 2013

Occupational stresses of steel manufacturing workers have been investigated using an organized questionnaire composed of 40 items. Three hypothesizes were developed based on the literature review of related researches. Empirical data surveyed from ones working in steel manufacturing jobs were collected and the in-depth statistical analyses using Statistical Package for the Social Sciences(SPSS) software were performed. These statistical results indicate that the existence of occupational stress may cause to take place industrial accidents. Consequentially, the prevention of occupational stress helps to promote the will to work, following by increasing job satisfaction in working circumstance of steel manufacturing.

• 품질경영학회지
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• 제31권2호
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• pp.98-116
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• 2003

The objective in this paper is to develope the e-Supply Chain Management System and applied for the Manufacturing. A Manufacturing that is consider to be world class recognize that its ability to complete in the marketplace depends on developing e-SCM System that is properly align with its mission of serving the customer. This paper investigated the relationship between e-SCM and performance in manufacturing. A stratified random sample was collected from the Federation of Korea Industries. Conclusively, e-SCM is important factor between source factors (environmental dynamic, Leadership) and manufacturing performance. e-SCM is significantly related to Quality, Flexibility, Delivery, and Cost.

• 한국전기전자재료학회논문지
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• 제21권5호
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• pp.397-401
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• 2008

Most of the topic in PCB industry was about increasing the volume of product for the development of electronics in numerous industrial application area. However, it has been emerged that yield improvement quality manufacturing via detecting any suspicious process in order to minimize the scrapped product and material waste. In addition, recently, restriction of hazardous substances (RoHS) claims that electronic manufacturing environment should reduce the harmful chemicals usage, thus the importance of monitoring copper etchant and detecting any mis-processing is crucial for electronics manufacturing. In this paper, we have developed real-time chemical monitoring system using RGB sensor, which is simpler but more accurate method than commercially utilized oxidation reduction potential (ORP) technique. The developed Cu etchant monitoring system can further be utilized for copper interconnect process in future nano-semiconductor process.

• 대한산업공학회지
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• 제39권3호
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• pp.156-162
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• 2013

Social manufacturing architecture is based on information delivery through social media and SNS, PLM and social platform, crowd source and knowledge base on whole phase of product life cycle. Although advanced social manufacturing issues are rising globally, its technology emerging into domestic industry is likely to be slow. We focused to review technological changes and R&D trend, patent issues, and then suggest assignments and advices to be practiced for social manufacturing modeling.

• 한국안전학회지
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• 제38권1호
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• pp.34-41
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• 2023

In this study, S food manufacturing business located in Chungbuk was selected as the subject, and the transition in insulation resistance in major electrical equipment used in this food manufacturing business was analyzed for 4 years (2018-2021). It was confirmed that the insulation resistance decreased over time for all 18 electrical facilities. Insulation resistance changed due to environmental influences such as load characteristics and ambient temperature. Particularly in the case of the food manufacturing industry, it was confirmed that the decrease started after 2 years, although it varied depending on equipment and environmental influences. Furthermore, it was confirmed that management through predicting the management cycle of electrical equipment is possible by deriving a regression equation through regression analysis of insulation resistance measurement values.

• 한국경제지리학회지
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• 제22권4호
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• pp.472-487
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• 2019

제지산업은 거듭되는 원료 및 공정기술의 혁신과 함께 두드러진 입지변동을 겪은 산업으로서 국가 및 지역별 생산 조건의 차이로 인해 해당 산업의 구조 및 입지가 상이하게 전개되고 있어 국가 및 지역별 사례 연구는 큰 의의를 갖는다고 하겠다. 본 연구는 국내 제지산업의 발달과정에서 나타나는 입지 변동에 주목하고 이를 생산요소 조건과 시장 및 정부 정책을 중심으로 설명하였다. 먼저, 20세기 초반부터 오늘에 이르기까지 국내 펄프·제지산업은 생산요소 조건, 특히 원료 조건의 변화와 관련하여 펄프공정 중심에서 제지공정 중심으로 산업의 구조가 변화되었음을 고찰하였다. 둘째, 오늘날 제지산업계에서는 원료와 시장을 입지선정과 관련하여 어떻게 고려하고 있는지 파악하였다. 마지막으로, 1970년대 말부터 수도권에 대한 입지규제가 시행됨에 따라 제지산업의 입지 변동이 어떻게 진행되었는지 설명하였다.

• 대한산업공학회지
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• 제40권6호
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• pp.555-567
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• 2014

Over 40 years, the domestic manufacturing industry of Korea played the vital role in creating national wealth, employment and innovation in its economy. In 2011, industrial products made up 99.7 percent of exports, and formed 31.2 percent of GDP. Given those facts, the research of manufacturing systems engineering for higher manufacturing efficiency and its industrial applications have been essential for Korea's economic growth. In this paper, for celebrating the 40th anniversary of the foundation of Korea institute of industrial engineers (KIIE), the research results and its industrial applications of KIIE are reviewed and summarized in the area of manufacturing systems engineering over past 40 years. Directions of future manufacturing system and the role of industrial engineers for our continuous economic growth are also mentioned.

• 식품산업과 영양
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• 제8권2호
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• pp.38-42
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• 2003

• 식품산업과 영양
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• 제8권2호
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• pp.43-50
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• 2003