• Proceedings of the Korean Information Science Society Conference
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• 2003.04a
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• pp.815-817
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• 2003

본 논문은 다품종 소량생산시스템에서 장비 구성 요소들간의 복잡한 활동 및 작업 흐름에 신속하고 유연하게 대처 할 수 있는 프레임워크 구축 방법에 대해서 기술한다. 제안하는 프레임워크의 구조는 OPC와 XML을 이용하여 장비의 행위를 기술하고 제어하는 스크립트를 생성하는 부분과 생성된 스크립트를 시뮬레이션 및 실제 동작시키는 부분으로 구성된다. 이 프레임워크는 표준화와 개방화 추세에 따라 기존 시스템과 쉽게 결합하고 통합할 수 있는 구조를 갖는다. 또한 장비의 행위를 미리 구성하고 시뮬레이션을 통하여 장비 개발의 질을 향상시키고 발생 가능한 문제를 미리 예측할 수 있으므로 장비 제어 시스템의 개발 및 유지보수에 대한 비용을 현저히 줄일 수 있다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.05a
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• pp.747-749
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• 2012

This paper is analyzing the SoC policy of major nations as the U.S, Japan, Europe, Taiwan, China and draw the suggestions for the development of semiconductor industry in Korea. SoC is the non-memory semiconductor to support and put into action the function of system. SoC is big market over the 200billion dollars and have a huge potential for new IT convergence market. Developed countries as the US, Japan, and Europe have enforced the industrial competitiveness by company investment and Taiwan supported the SoC Industry by government fund. Korea is No.1 superpower in DRAM semiconductor, but very weak in SoC Industry. We should secure the competitiveness of SoC Industry by the development of core technology, planning the growth policy, and building the cooperative model to leap the SoC power nation.

• Journal of the Korea Society of Computer and Information
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• v.14 no.9
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• pp.179-187
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• 2009

The national boundary's meanings turn to weak according to advent of Global enterprises. The place for design a product and marketing are separated to actual market. R&D is to the area where the knowledge activity is well, and low skilful product assembling is to the place the low wage is acceptable. It shows that the importance of net work structure. From early 90's, production system is diversified to markets where with the consumer as the central as multifarious items and creation new demands through consumer's participation into manufacturing process. This phenomenon show that logistics structures adapt to demand of technical variation, and the development of e-business with VAN(:value added network) and EDI(:Electronic data interchange) prove it. This study tried to analyze utilitarian assay about systems those land, sea, air logistics through documents research, and this study also present the direction of logistics system of airline company and goal of development on the based to the model of domestic airline company accordingly.

• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 1997.10a
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• pp.24-31
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• 1997

최근 우리나라가 직면하고 있는 국가 경쟁력 상실이 기술개발의 부족에 기인하는 것으로 보고, 이를 개선하기 위해 그간 대기업의 소품종 대량생산을 위주로 하는 산업체제를 기술중심의 고부가가치를 갖는 다품종소량생산 체제로 전환하는 구조조정을 유도하고 있다. 우리나라의 원자력 연구개발은 표준경수로 설계기술의 자립이라는 1단계 기술개발 목표를 달성하고, 이를 바탕으로 보다 높은 수준의 기술을 달성하기 위해 2010년을 계획기간으로 하는 원자력진흥종합계획을 수립하고 있다. 본 연구는 이러한 기술개발 활동을 통해 습득된 원자력기술을 내부적으로는 개발된 기술의 유용성을 증대하고, 외부적으로는 국가 경쟁력 강화 노력에 따라 발생하는 기술수요 노력을 능동적으로 지원할 수 있는 원자력 기술확산의 가능성을 분석하였다. 이를 위해 원자력기술과 다른 기술 분야와의 기술연관성을 조사하여 원자력기술의 확산가능성을 분석하고, 기술이 응용되고 있는 구체적인 사례를 조사하였다. 또한 기술파급이 실제 이루어지고 있는 경우에 이루어지는 기술확산의 경로와 유형들의 체제를 분석하였다.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2002.11a
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• pp.432-444
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• 2002

본 연구에서는 전자상거래의 확산에 따른 환경변화 속에서 다품종소량생산체제의 특성을 가진 주문제조업체들이 동적으로 변화하는 환경과 다양한 고객들의 주문에 대응하여 경쟁력을 제고시키기 위한 멀티에이전트 기반 협상지원시스템(MANESS)을 개발하였다. 이 시스템은 동적으로 변하는 환경과 고객들의 주문에 대응하기 위한, 그리고 유연한 시스템 구조를 이루기 위한 새로운 패러다임으로 부각되는 에이전트기술을 사용하였다. 그 중에서도, 에이전트간의 협업을 통해 문제를 해결하는 멀티에이전트기술을 사용하여 시스템을 개발하였다. 이 시스템은 주문제조업체에서 가장 중요한 거래활동인 협상의 자동화를 통해 주문에서부터 생산에 이르는 일련의 모든 거래활동을 자동화하는 것이다.

• Journal of the Korea Society of Computer and Information
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• v.28 no.11
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• pp.21-28
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• 2023

In manufacturing companies that focus on small-scale production of multiple product varieties, defective products are manually selected by workers rather than relying on automated inspection. Consequently, there is a higher risk of incorrect sorting due to variations in selection criteria based on the workers' experience and expertise, without consistent standards. Moreover, for non-standardized flexible objects with varying sizes and shapes, there can be even greater deviations in the selection criteria. To address these issues, this paper designs a quality inspection system using artificial intelligence-based unsupervised learning methods and conducts research by experimenting with accuracy using a dataset obtained from real manufacturing environments.

• Journal of Digital Convergence
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• v.16 no.7
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• pp.393-400
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• 2018

I would like to design a customized furniture for one-person households that have emerged as mainstream in modern society. In particular, I focused on the tendency of generations to improve the quality of life, and wanted to design the aesthetic furniture close to art furniture. To this end, I look at art furniture in domestic and overseas furniture. and present the concept of combined custom design based on current trends. The combined custom design differs from the existing one by creating separate designs for each part and fusing them to enable more diverse and aggressive molding. This is in harmony with the active tendency of one-person households who shows a lot of interest in the quality of life. Especially, it is suitable for small quantity production of various kinds, so it can be produced in the existing craft workshop system, and the two tables can confirm the possibility of the morphological concept according to actual combined custom design.

• Journal of Korean Society for Quality Management
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• v.50 no.1
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• pp.153-167
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• 2022

Purpose: The purpose of this study is to guide the operation managers who plan daily production of large mass-processing facility that services multi-customers with multi-product, small-batch item characteristics by providing the practical best production quantity and the inventory allowed to build. Methods: Close observation of a subcontract paint-shop operator captured the daily decision process which was reflected in the subcontractor-unique mathematical model and the system dynamics simulation model. Multiple simulations were run to find the practical best production quantity and the maximum allowable stock level of inventory that did not undermine the profit from practical best daily production. Actual data and a few constant values were obtained from the firm under study. Results: While the inventory holding cost for the customer-owned material harms the total profit of the subcontractor, the running cost of the processing facility hinders production in small batches. This balances the maximum possible productions and results in practical best daily production which can be found through simulation runs with actual data. The maximum level of stocked inventory is deduced from the practical best daily production. Conclusion: To build a large volume that enables economy-of-scale production, operators should deal with multi-product small-batch items from multiple customers. When the planned schedule of the time and amount of material in-flow tend not to be reliable, operators can find it practical to execute level production across the planning horizon instead of adjusting to day-to-day in-flow fluctuations.

• The Transactions of the Korean Institute of Electrical Engineers
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• v.39 no.10
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• pp.1108-1120
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• 1990

The present study is to develop an intelligent control system for flexible manufacturing system, which is suitable for a variety of manufacturing types with smaller production rates. The controller is designed to integrate heuristic rules with optimization techniques for loading as well as flow rate of parts and ultimately meeting performance indices. The control function implemented by an optimization technique is to calculate short term production rates of parts. The heuristic control determined by production rules requires knowledge base to evaluate selected loading alternatives according to short term production rate and current process information, and also to determine final decision pertaining to loading. In this case, the knowledge base is constructed using the rules for evaluating alternatives, decision criteria, and flow control of parts in manufacturing system. The database is formulated by means of managing and updating current process information. A graphic system to monitor current status of the function and operation of manufacturing system is developed, and computer simulation is carried out to evaluate the performance of the proposed controller.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.5
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• pp.305-315
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• 2016

Due to the change from small volume production to small quantity batch production systems, individual companies have been attempting to produce a wide range of operating strategies, maximize their productivity, and minimize their WIP level by operating with the proper cycle time to defend their market share. In particular, using a complex workflow and process sequence in the manufacturing line has some drawbacks when it comes to designing the production strategy by applying analytical models, such as mathematical models and queueing theory. For this purpose, this paper uses three heuristic algorithms to solve the job release problem at the bottleneck workstation, product mix problem in multi-purpose machine(s), and batch size and sequence in batch machine(s). To verify the effectiveness of the proposed methods, a simulation analysis was performed. The experimental results demonstrated that the combined application of the proposed methods showed positive effects on the reduction of the cycle time and WIP level, and improvement of the throughput.