• 열처리공학회지
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• 제22권4호
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• pp.203-209
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• 2009

Dual mass flywheel is the newly developed flywheel system which reduces the noise and vibration and make a better and comfortable ride of cars by adding inertia mass and damping device. However, verification of performance for this system should be carried out since this system is under developing status in our country. Especially, the durability for each part of this system should be guaranteed. Durable properties of driver plate which is the key component of dual mass flywheel were first investigated both in the raw (SCM435 in JIS) and heat-treated material. In addition, fatigue life analysis of driver plate was preformed in the real condition and the results were verified by comparison with the results of rig test.

• 산업경영시스템학회지
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• 제24권69호
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• pp.13-22
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• 2001

The efficient quality assurance system to prevent mixed assembly in introduced in this paper, It supports JIT(Just-In-Time) based Kanban and demand pull system. A new system is designed for the synchronized production and quality assurance using barcode and production kanban card, And the performance improvement method for the stable and fast response of the proposed system is suggested in this paper also. As the result of the proposed system, we improved production status visibility and quality traceability.

• 한국항행학회논문지
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• 제15권5호
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• pp.729-734
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• 2011

본 논문에서는 EPCglobal에서 표준화한 미들웨어를 이용하여 e-Meters 미들웨어와 응용 프로그램을 제안하였다. EPCglobal의 표준화된 미들웨어는 SCM 및 기타 물류의 형태로 관리할 수 있도록 설계되어 있다. RFID기반을 이용한 다양한 서비스를 지원하기 위해서는 각각의 하드웨어 프로토콜을 지원할 수 있어야 한다. e-Meters 미들웨어의 주된 기능으로는 정보 상태 및 전달, 분산 데이터베이스 처리, 이벤트 발생 데이터 분석, 처리 등이 있다. e-Meter 시스템정보를 실시간으로 운영하기 위해서 데이터를 수집한 결과를 처리하는 과정까지 구성하였다.

• 한국축산식품학회지
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• 제33권4호
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• pp.463-473
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• 2013

Through the development of efficient data collecting technologies like RFID, and inter-enterprise collaboration platforms such as web services, companies which participate in supply chains can acquire visibility over the whole supply chain, and can make decisions to optimize the overall supply chain networks and processes, based on the extracted knowledge from historical data collected by the visibility system. Although not currently active, the MeatWatch system has been developed, and is used in part for this purpose, in the imported beef distribution network in Korea. However, the imported beef distribution network is too complicated to analyze its various aspects using ordinary process analysis approaches. In this paper, we suggest a novel approach, called RFID-based supply chain process mining, to automatically discover and analyze the overall supply chain processes from the distributed RFID event data, without any prior knowledge. The proposed approach was implemented and validated, by using a case study of the imported beef distribution network in Korea. Specifically we demonstrated that the proposed approach can be successfully applied to discover supply chain networks from the distributed event data, to simplify the supply chain networks, and to analyze anomaly of the distribution networks. Such novel process mining functionalities can reinforce the capability of traceability services like MeatWatch in the future.

• 대한안전경영과학회지
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• 제4권1호
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• pp.105-114
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• 2002

Nowadays, most companies seek after the greatest profit by means of offering the goods which consumers want timely and efficiently and minimizing the cost of inventory and distribution channel which amounts to the great portion of total cost. And according as EC(Electronic Commerce) market has increased rapidly, SCM(Supply Chain Management) for EC become one of the most important facts for companies, therefore this paper suggest SCM scheme which EC, especially B to C, is added to the existing commerce system. This paper uses internet for information integration of distribution channel which is away from one another and applies TOC(Theory of Constraint)'s DBR(Drum-Buffer-Rope) Scheduling for synchronization through the whole supply chain. It is possible to synchronize the whole supply chain by means of making the speed of manufacturing and distribution to be controlled by consumer's order which is received in distribution center, and inventory and loss of sales opportunities are minimized by constant. Buffer Management. If inventories in distribution center is short, then it needs to search CCR(Capacity Constraint Resource) in supply chain and to control the speed of manufacturing and distribution according to the ability of CCR. This paper applies PT(Partial Transshipment) strategy for Delivery from distribution center to store or cyber consumer. the strategy this paper suggests chooses neighbour area from area which each distribution center takes charge, and then makes product ordered by cyber consumer which lives in the chosen area to be delivered according to inventory of distribution center.

• 한국통신학회논문지
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• 제37권1C호
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• pp.17-23
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• 2012

RFID(Radio Frequency IDentification)는 바코드를 대체해 많은 분야에서 각광을 받고 있으나, 현재까지는 적용 범위가 유통관리, 판매 등의 한정된 산업 분야에서 주로 이용되어 왔다. 본 논문에서는 RFID 시스템을 실제 공정과정에 적용할 경우의 운영 방안 및 효과에 대한 연구 결과를 기술하였다. 아울러 RFID 시스템의 도입 전과 후의 비용 관점에서의 비교 분석 결과, RFID 시스템의 운용 이후 이에 투자되는 비용 상쇄는 물론 그 이상의 효과가 있음을 확인 하였다. 따라서 본 연구 결과는 바코드 시스템에서 RFID 시스템으로의 교체를 망설이는 많은 제조업체들의 의사결정에 크게 기여할 수 있을 것으로 기대된다.

• 한국기계가공학회지
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• 제12권1호
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• pp.9-14
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• 2013

In recent years, high hardness steel is used for most of the material in many areas including aircraft, nuclear power, space exploration and automotive parts. Low CBN tools are widely used in industrial field which can effectively process high hardness steel of HRC 45 or harder. The results of this study demonstrated, when high hardness steel, SCM440 is turned with Low CBN tools coated with TiN and TiAlN coatings respectively, that both the thrust force and cutting force tends to increase with more increase in cutting force than thrust force, as the feed rate increases at constant cutting speed. In addition, the size of the cutting force and thrust force does not change with the increased cutting speed at the same feed rate, but the tool life is reduced if the cutting speed is increased to shorten the machining time. Therefore, it is recommended to limit the cutting speed at 250 m/min maximum or less. Furthermore, comparing the cutting force of the three tools at the same cutting condition, Tin coating tool showed the smallest cutting force and Low CBN was the next, and the TiAlN coating tools showed the largest cutting force.

• 정보처리학회논문지D
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• 제12D권7호
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• pp.1039-1048
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• 2005

대규모의 과제를 수행함에 있어 소프트웨어 형상 관리는 필수이다. 소프트웨어 형상관리 (Configuration Management)의 범주는 버전관리 외에도 각 개발자의 작업영역 관리, 소프트웨어 제작 관리, 개발 프로세스 제어부분까지 폭 넓게 포함하고 있다. 본 논문은 이러한 형상관리 부분에서 소프트웨어 제작부분의 최적화를 위해 다른 부분들이 어떻게 상호 유기적으로 조정되어야 하는지에 방향성을 두고 있으며 특히 형상관리 되어지는 정보 중에 어떠한 내용을 리포팅 할 때 소프트웨어 제작부분의 효율이 높아지는지에 대해 분석하고 그것을 기반으로 새로운 리포팅 시스템을 설계, 구현하고 평가하였다. 평가시에는 기존의 형상관리도구들의 관련 기능들에 대한 분석을 바탕으로 한 상대적 유효성에 대해 평가하였으며 각 리포팅 대상자들에게 관련 정보를 제공했을 때 생겨나는 변화에 대하여 설문 조사하여 그 유효성기 정성적 평가를 추가하였다.

• STI Policy Review
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• 제4권1호
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• pp.27-53
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• 2013

Technology research and development (R&D) expenditures have increased as most countries recognize that technological innovation is a significant factor for continued economic growth. R&D subsidies by governmental entities were permitted in accordance with the Subsidy and Countervailing Measure (SCM) Agreement under the World Trade Organization (WTO) system. However, according to Article 31 of the SCM Agreement the provision for R&D subsidies have been terminated as of January 2000 and legal disputes over R&D subsidies are likely to increase. The aircraft industry has been the only industry where R&D subsidies have become an issue under the WTO. This paper examines international trade disputes within the aircraft industry in regards to measures by Canada and bilateral disputes between the U.S. and the European Communities (EC). In these cases, various R&D subsidies on civil aircraft are found to be inconsistent with WTO rules. This study summarizes the WTO decisions on various R&D subsidies disputed in the aircraft cases and examines the type of R&D subsidies found to be inconsistent (or consistent) with the WTO to provide guidelines for current and future R&D subsidy policies in high-tech industries. The Canada-Aircraft case indicates that R&D subsidies directly targeted towards near market R&D projects with a high export potential will likely be in violation of current WTO rules. Furthermore, findings from the EC-Aircraft and the U.S.-Aircraft cases suggest that the forms (or the methods) of R&D subsidy distribution were not a sufficient condition for the WTO ruling; instead, what ultimately mattered was whether and specifically to whom the benefits of the R&D subsidies are conferred by the government entities.

• 한국정보통신학회논문지
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• 제11권4호
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• pp.641-647
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• 2007

전자무역에서 WMS는 물류산업을 보다 편리하고 효율적으로 개선시키는데 많은 부문에 기여했다고 할 수 있다. 그러나 운영 측면에서 볼 때 전자데이터 등의 폭발적인 수요 폭주로 인하여 운송방법 등의 기술적인 문제점들이 적잖게 노출되어 있는 것이 현실이다. 따라서 우리나라가 물류정보 중심지로 성장하기 위해서는 전자무역 ERP 관리하의 SCM 기반구축과 WMS를 충분히 활용하여야 할 시점이다. 본 연구의 목적은 전자무역 WMS의 효율적인 운영을 위하여 첫째, 우리나라 전자무역의 부분별 종합 WMS의 플로우 과정을 고찰하고 둘째, 전자무역 WMS의 문제점과 개선방안을 제시 하고자 한다. 본 논문은 WMS의 기술적인 방향을 제시하기보다는 실무적 관점에서 해석적 기초를 제시하는데 그 목적이 있다.