• 대한산업공학회지
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• 제22권3호
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• pp.413-426
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• 1996

Modern society, as a result of high industrial technology, is characterized by a series of mass production, moss consumption and mass disposal. As the mass disposal is known as the major culprit of destroying ecological system of our environment, human prosperity is in turn threatened by this indiscrete activities. Under current industrial technology which pursuit maximum profit, environmental problems could not be solved. This paper proposes recycle manufacturing systems of assemble products as a measure of current non-recycle manufacturing systems. Products are also composed of a number of ports. All parts are represented by a function of time cost performance variable as reuse level. We develop on information systems which give all the information on reused and recycled parts. We try to implement this result on a real fields. We confide ourselves to the contribution to on effective solution of environmental problems and to give profit to assembly manufacturing and consumers.

• 한국콘텐츠학회논문지
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• 제14권10호
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• pp.218-226
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• 2014

상황이론을 바탕으로 유연성, 전략유형, 정보특성이 생산성과에 미치는 영향관계를 실증분석을 통해 규명하고자 하였다. 유연성에는 제품유연성, 믹스유연성을 적용하였고, 전략유형에는 저원가전략과 차별화전략을 적용하였다. 정보특성에는 재무적 정보와 비재무적 정보를 적용하였으며, 성과는 생산성과를 적용하였다. 연구결과, 제품유연성은 차별화전략에 유의적인 영향을 미치고, 믹스유연성은 저원가전략에 유의적인 영향을 미치는 것으로 나타났다. 전략 중 재무정보와 비재무적정보에 유의적인 영향을 미치는 것은 저원가전략만이 유의적인 영향을 미치는 것으로 나타났다. 재무정보와 비재무정보는 생산성과에 유의적인 영향을 미치는 것으로 파악되었다. 믹스유연성은 재무정보와 비재무정보에 간접적인 영향을 미치고 있고, 또한, 믹스유연성은 생산성과에도 간접적인 영향을 미치는 것으로 파악되었다.

• 산경연구논집
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• 제9권11호
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• pp.93-104
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• 2018

Purpose - For small and medium sized firms, CEO characteristics are main factor influencing firms' prosperity as well as performance. So it is quite natural that many people are interested in factors of CEO that matters. In this research, CEO characteristics in terms of capabilities and skill or special knowledge necessary to run the business are invested for manufacturing firms. Precedent studies reveal that CEO characteristics such as psychological factors including desire to succeed, tendency to take risks, personal factors including age, year of running business, and task related factors including managing capability, communication skills, network influence firm performance for manufacturing firms. However, these studies simply verify whether or not those factors affect firm's managing performance. This study, however, goes further to investigate how is the affecting process from CEO's capabilities and organization characteristics to firm's core competence, and from core competence to advantages, and from advantages to managing performance. Research design, data, and methodology - We make a questionnaire and surveyed manufacturing firm CEO's in Gyeonggi-do area. General characteristics analysis, factor analysis, regression analysis, and control effect analysis was conducted. SPSS 2.0 Win, version was used. Results - The CEO characteristics including basic capability, task capability, leadership, and organization characteristics affect core competence at the statistically significant level. And, core competence affect both price advantage and differentiation advantage at the significant level. Some unique finding is that while differentiation advantage affects both financial achievement and non-financial achievement, price advantage does not affect both financial and non-financial achievement. And firm characteristics mainly measured by CEO characteristics of skills has control effects on the trace from core competence to price advantage. Conclusions - For small and medium sized firms CEO characteristics is the most important factor influencing firm's prosperity. For manufacturing firms, whether CEO has the skill or special knowledge to run the firm is critical factor. The study results show that CEO's for manufacturing firms put importance on price and price advantage which seems to be familiar to them. However, the price advantage does not influential to financial and non-financial achievement. This result suggests that small and medium sized manufacturing firms' CEO's should make effort to improve other aspects of advantages to be more competitive.

• 한국원자력학회:학술대회논문집
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• 한국원자력학회 2004년도 추계학술발표회 발표논문집
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• pp.672-673
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• 2004

• 벤처창업연구
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• 제16권6호
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• pp.69-84
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• 2021

최근 4차 산업혁명에 따른 산업구조 변화로 첨단산업 육성에 대한 필요성이 커지고 첨단제조 분야에서의 부가가치 창출이 높은 것으로 나타남에 따라 이에 대한 중요성이 점차 높아지고 있다. 그러나 급변하는 경제 환경속에서 첨단제조 벤처기업은 내부 핵심자원과 경험 부족으로 경쟁 우위를 확보하는데 많은 어려움을 겪게 되면서, 내부 경쟁력을 강화하고 비(非) 핵심 분야를 보완하기 위하여 다양한 경험과 기술력, 풍부한 자원을 보유하고 있는 외부 기업 또는 기관과의 협력활동을 적극적으로 추진하고 있다. 따라서 본 연구에서는 자원기반이론과 거래비용이론을 바탕으로 첨단제조 벤처기업의 외부적 협력활동 경험이 내부 핵심역량과 경영성과에 미치는 영향을 분석하였다. 본 연구의 가설 검증을 위하여 중소벤처기업부에서 1999년부터 편제하고 있는 벤처기업정밀실태조사의 2020년 자료를 활용하였다. 연구 결과에 따르면 첫째, 외부적 협력활동 경험은 첨단제조 벤처기업의 내부 핵심역량과 비재무적 경영성과에 유의한 영향을 미치는 반면, 재무적 경영성과에는 영향이 없는 것으로 나타났다. 그리고 외부적 협력활동 경험은 내부 핵심역량을 매개하여 경영성과에 영향을 미치는 것으로 나타났다. 둘째, 첨단제조 벤처기업의 내부 핵심역량은 비재무적 경영성과와 재무적 경영성과에 유의한 영향을 미치며, 비재무적 경영성과는 다시 재무적 경영성과에 유의한 영향을 미치는 것으로 나타났다. 마지막으로 외부적 협력활동 경험은 개발·제조·마케팅 역량 모두에 긍정적인 영향을 미쳤으며, 경영성과에는 내부 핵심역량을 구성하는 개별 요인이 미치는 영향이 다르게 나타났다. 특히, 개발·마케팅 역량은 비재무적 성과와 재무적 성과에 모두 유의한 영향을 미치는 반면, 제조 역량은 재무적 성과에만 유의한 영향을 미치는 것으로 나타났다.

• 한국기계가공학회지
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• 제12권6호
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• pp.142-151
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• 2013

This study develops an automation system for metallic mold design that is applicable in forging non-axial symmetric parts. The metallic mold design program is used to design the metallic mold using two-dimensional axial symmetric metallic molds and to predict the stress concentration using finite element analyses. Then, the program redesigns the metallic mold using variables such as the optimal split diameter, maximum allowable inner pressure, fit tolerance, and stress distribution, which are calculated using the metallic mold design program. When the involute spur gear is forged, stress concentration occurs on the tooth root bounded at the symmetric surface. The SCM4 material is suitable for metallic molds because the stress is less than the yield strength of the insert and it acts on the tooth root regardless of the inner pressure. The metallic mold for forging non-axial symmetric parts can be designed through adjusting the magnitude of the contact pressure. The program developed in this study can be applied to metallic mold designs in involute spur gears of forging, which is an ordinary non-axial symmetric part.

• 융복합기술연구소 논문집
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• 제3권2호
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• pp.11-15
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• 2013

These days, the quality of goods is required to improve in the process of manufacturing the semiconductor through the short working hours and clean transportation. The non-contact transport device using magnetic levitation can be a solution in the manufacturing process. The non-contact transport device, using electromagnetic actuation, is the system that can actually transport them by only using attraction force from the electromagnetic source without authentic contact. Moreover, the system using electromagnetic force has a substantial number of benefits ranging from unrestricted design to unlimited expansion. Especially, the price is competitive. The non-contact transport device, using electromagnetic force, has another merits in controlling by giving the same amount of attraction force to ferromagnetic body. By controlling the currents given to coil, the operator is able to decide the direction of the transportation. In order to design the optimal system, we implemented five different things such as the presence of the links below the electromagnetic, the electromagnet changes due to coupling method, the change according to the thickness of the links below electromagnet, due to changes in between electromagnetic distance direction, and the size of the current. Through simulations and the optimum design, it seems to control easily and figure out the exact size of power. It might definitely be the non-contact transport that can sharply reduce tiny scratches and particles in the process of manufacturing the semiconductor.

• 한국생산제조학회지
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• 제22권6호
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• pp.937-944
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• 2013

This paper describes an improved model that can be used for configuring a non-contact pneumatic head to handle a large sheet of glass. The cylindrical head model is of a large size (70 mm). It operates on vortex flow, which can simultaneously generate suction and repulsion over the flat object's surface. The head allows for the minimal non-contact lifting of objects weighing over 3N by using reference conditions (working pressure and head dimensions). Additionally, a functional flow-guide is applied for inducing a developing tangential vortex flow to increase suction and repulsion to the reference head. The cylindrical flow-guide is associated with relatively low tangential velocity. The improved model generates greater lifting force than the reference model, as verified experimentally.

• 한국생산제조학회지
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• 제22권6호
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• pp.913-920
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• 2013

This paper presents an applicable basic design that can configure non-contact levitation table for conveying a large sheet of glass. The suggested air levitation table consists of a series of air chambers with porous pads and fans as the conveyor system. The air supply chambers are arrayed to supply an adequately strong upward airflow for supporting the glass. Levitation is controlled by the size and discharge velocity, of the chamber arrays, as well as the glass supporting height. After pre-evaluation of the glass rigidity and the filer functional performance, a one-way fluid structure interface (FSI) analysis is performed for predicting pressure and deflection working of the 8G glass in the transverse and longitudinal directions, respectively. After comparing calculated levels of flatness of the glass, it determines the chamber array for the linear non-contact conveying motion.

• 한국산학기술학회논문지
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• 제11권11호
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• pp.4174-4181
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• 2010

본 논문은 비안정적인 재작업 발생확률이 존재하는 제조공정을 위한 적응형 스케줄링 알고리즘을 제시한다. 본 논문에서 제안하는 하이브리드 Q-학습 알고리즘은 강화학습 기반의 Q-학습과 인공신경망을 결합한 알고리즘으로써 재작업확률이 불안정한 상황의 제조공정에 대해 학습을 통해 적응력을 가질 수 있도록 고안되었다. 제안 알고리즘은 평균지연시간을 척도로 그 성능을 평가하였고, 기존의 작업할당 알고리즘들과 다양한 실험 시나리오를 기반으로 비교함으로써 그 우수성을 보이도록 한다.