• Proceedings of the Korean Society of Computer Information Conference
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• 2023.07a
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• pp.409-412
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• 2023

검색을 통해 찾은 컴퓨터 부품의 정보(가격, 호환 여부, 성능) 등을 자동으로 체크 해주고 이를 통해 만든 컴퓨터 견적을 여러 사람과 공유 및 열람을 할 수 있고 대화창과 같은 게시판을 통해 서로의 지식과 정보를 쉽게 공유할 수 있는 웹 사이트를 개발하였다. 이 사이트가 사용자들의 합리적인 소비로 이어지기를 기대한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2019.01a
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• pp.443-444
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• 2019

공유경제 시대의 다양한 전기구동플랫폼 운용에 유효한 새로운 유지보수 가이드라인을 도출하고자, 본 연구는 하이브리드자동차와 전기자동차의 특성을 모두 갖는 PHEV의 장기간 주행 데이터를 분석하여, 주요 부품의 상태 변화를 파악하였다. PHEV의 모터, 인버터, 2차전지 등 주요 부품의 주행 데이터 변화를 관찰하여 마일리지 누적에 따른 상태변화가 큰 부품을 파악하였다. 분석결과 1만Km 이상 주행 시 보조 배터리의 온도와 5만Km 이상 주행 시 2차전지의 온도 변화가 유의미하게 발생함을 확인하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.04a
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• pp.1112-1115
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• 2011

웹 2.0 시대의 웹에는 UCC 같은 소비자가 직접 미디어를 생성하고 소비하는 프로세스가 등장하여 일반화되고 있다. 본 연구는 이러한 인터넷 사용의 트렌드에 발맞추어 다종의 멀티미디어 콘텐츠를 포함하는 개인화된 맞춤형 콘텐츠 추천 에이전트를 개발하였다. 웹 상에 존재하는 다양한 콘텐츠 중에 사용자의 선호패턴과 일치하는 콘텐츠들을 추천하여 서비스하는 본 시스템은 유무선 환경을 망라하는 다기종의 디바이스들을 위한 플랫폼들을 지원하고 있다. 또한, 사용자들이 웹 상에서 콘텐츠들을 등록하고 생성하여 각 사용자들의 그룹과 친구와의 공유가 가능하다.

• Journal of the KSME
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• v.44 no.7
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• pp.18-19
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• 2004

급변하는 시장 요구와 수요에 신속히 대처하기 위하여 제품의 제조 및 조립에 요구되는 각 부품을 설계 단계에서부터 CAE 기술을 적용하여 정량적인 설계 과정으로 확립하고 동시에 이 결과를 제품 개발과 관련된 종사자가 쉽게 공유하게 하는 효율적인 동시 공학적 설계 과정은 기업의 생산성 향상 및 제품 개발 기간 단축을 위해 필수 불가결하게 되었다.(중략)

• Proceedings of the Korea Information Processing Society Conference
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• 2004.11a
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• pp.553-556
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• 2004

인터넷의 발달로 기업 비즈니스 환경이 글로벌화되면서, 각 기업들은 제품 생산에 있어 핵심 역량만을 갖고 그 이외의 부품에 대해서는 우수한 파트너를 찾아 사이버 공간 상에서 기업 활동을 할 수 있는 환경을 필요로 하게 되었다. 이러한 환경에서는 기업간의 협업이 중요하여 제품 생산에 요구되는 각 사의 정보를 서로 공유할 수 있어야 하지만, 협업에 참여하는 각 기업들이 자사의 제품정보를 서로 다른 구조와 내용으로 서로 다른 응용시스템을 사용하여 관리하는 문제점을 갖고 있다. 이에 본 논문에서는 제품정보 공유 방안에 대해 논의하고 다양한 응용시스템을 대상으로 시험하였다.

• Telecommunications review
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• v.24 no.5
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• pp.677-691
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• 2014

Connectivity is becoming more important keywords recently. For example, many devices are going to be connected to the internet. It is usually called as the IoT(internet of things). Many IoT devices can be evolved as a part of giant system of the world wide web. It is a great opportunity for us, because many new services can have emerged through this paradigm. In this paper, we propose a device virtualization framework for smart home service. The proposed framework connects the many home appliances devices and the internet using a dynamic protocol conversion. After our protocol conversion for device virtualization, our framework provides a RESTful API to access the resources of device through the internet. Therefore, the proposed framework can provide a variety of services, so it also can be developed into the ecosystem for smart home service. The current framework version only supports UPnP enabled devices of the home, but it can easily be extended to many other home middleware solutions. To verify the feasibility of the framework, we have implemented several service scenarios.

• The Korean Journal of Applied Statistics
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• v.9 no.2
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• pp.119-134
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• 1996

Accelerated life testing (ALT) of a system is commonly used to reduce time and cost. ALT is achieved by subjecting the test systems to more severe conditions than the normal ones to obtain estimates of life distribution under normal condition. The major interest of this research is to use a model of incorporating the common environmental effect on the components serially linked into a system-so called frailty model for the system life time distribution under each stress and to discuss the related data analysis and comparison of the model with the generally used one. The profile likelihood is used to get an initial values required to compute maximum likelihood estimates and simulation is carried for comparison.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2014.10a
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• pp.540-542
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• 2014

The Universal Plug and Play (UPnP) specification permits networked devices to discover each other and to provide diverse services in the home network environment. Recently, new paradigms such as mobile connected computing, cloud-based service delivery, smart device content sharing, and Internet of Things (IoT) have emerged, but the home network based UPnP shows functional limitations in supporting such paradigms. To support them, the UPnP Forum has recently extended the capabilities of the existing UPnP, calling it UPnP+. In this paper, the UPnP Device Architecture V2.0 (UDA 2.0), which forms the basis of UPnP+, is presented. We present how UDA 2.0 enables the expansion of the home network to wide-area networks and non-IP device domains.

• The Journal of Society for e-Business Studies
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• v.14 no.4
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• pp.267-286
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• 2009

Most companies in automobile part industry need a SCM (Supply Chain Management) system under the cooperation with suppliers for assembling a automobile. Automobile part industry has a industry feature of hierarchical structure like 1st, 2nd, 3rd vendors. Recently, new cases to implement RFID (Radio Frequency Identification) technology appear in various areas required for integrated information system. Especially, supply chain environment in automobile part industry turns toward ubiquitous computing environment. Most companies in automobile part industry are interested in implementing RFID-based supply chain management system, which makes them shorten the business process, share the transaction information, and enhance the collaborative relationship between trading partners. This paper intends to implement RFID technology in the physical distribution area of automobile part industry such as warehousing, delivering, inventory management. The purpose of this paper is to improve the collaborative relationship of supply chain network using RFID applied to u-SCM system in ubiquitous computing environment. The contribution of this paper is to suggest a new system approach to transform existing business process into new business process through designing and implementing a RFID based SCM system using UML techniques.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.10
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• pp.48-54
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• 2020

DMSMS (Diminishing Manufacturing Sources and Material Shortage) is increased by developing the scientific technique and downsizing the military part market. DMSMS affects the increase in total life cycle costs and serviceability. Therefore, advance control for parts is important to reduce the cost, and a database is needed to share information on the DMSMS. A task needs to be performed continuously by setting the major control item to management more efficiently. The purpose of this study was to deduce the major control item for the DMSMS management system. Thus, the pre-control item basis of the DAPA (Defense Acquisition Program Administration) Manual and the SD-22 Manual were first selected, and the results of the survey were analyzed by AHP (Analytic Hierarchy Process) method. Fifteen of the detailed items were stratified into three criteria (Impact, Probability, and cost of the DMSMS), and each weight for the items was calculated using a nine-point scale survey. The AHP survey was executed with 25 specialists in the DMSMS management field, and the score of consistency ratio over 0.1 was excluded. The model explained the results and suggested future directions for development.