• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2001년도 학술대회지
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• pp.495-500
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• 2001

공동주택은 준공 후 일정기간이 경과하면서 사용된 자재의 내구연한에 따라 노후화 현상이 나타난다. 구성자재의 내구연한에 의해 일부부위는 짧은 시간내에 수선을 하여야 하며 어떤 부위는 장시간이 경과한 후에 수선을 하기도 한다. 이와 같이 건물에 나타나는 다양한 노후화 현상에 대해 체계적일 유지관리를 하려면 준공후 경과년수에 따른 장기적인 계획수선을 필요로 한다. 장기수선계획작성에는 건물의 공종에 따른 수선시기를 예측하여 이를 기초로 작성해야 한다. 공동주택에서 장기수선계획이 계획에 지나지 않으며 실질적인 수선에 적용되지 못하는 주요인은 앞으로 수선이 예측되는 건물의 각 부위에 대한 수선시기를 예측하지 못하기 때문이다. 이에 본 연구는 전국에 산재한 공동주택을 장수명화하기 위해 장기수선계획을 활용하여 .해당단지의 부위별 재료의 특성을 반영한 수선주기 및 수선시기를 예측하고, 공동주택 관리자가 주기적 점검, 진단, 교체 등의 사항을 유지관리 캘린더에 의해 단지별로 자동관리할 수 있는 웹기반 유지관리 시스템을 제안하다.

• Journal of Platform Technology
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• 제11권6호
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• pp.79-88
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• 2023

최근 산업 재해는 산업화로 인해 지속적으로 증가하고 있으며, 작업현장에서 위험요소로 인한 손실을 줄이기위해 작업자의 안전관리는 필수사항으로 인식되고 있다. 작업자의 안전관리를 위해서는 산업현장의 특성을 고려한 맞춤형 안전관리 인공지능 기술의 적용이 요구된다. 현장의 안전관리는 작업 및 공정별 안전사고 유형 및 위험성 분석을 기반으로 상황에 따른 작업자의 실시간 위험 감지 및 대응을 위한 서비스 설계를 고려한다. 제안된 안전관리 서비스는 IoT 기반의 센서 자료를 획득하기 위한 작업자 디바이스, 획득한 센서 자료를 수집하기 위한 엣지장치와 작업자의 재해 대응을 지원하는 음성챗봇으로 구성된다. 음성챗봇은 재해 현장의 작업자의 위험대응을 위한 상호작용을 수행하는 주요한 역할을 수행한다. 이 논문은 작업자의 상황에 따른 작업안전을 위한 IoT 기반의 시스템과 서버 상의 음성챗봇을 활용한 실시간 위험대응 서비스 시스템을 기술한다. 안전관리 서비스 제공을 위한 엣지 수준에서의 대응처리를 위해 스토리기반 음성챗봇을 활용하도록 한다.

• 스마트미디어저널
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• 제12권10호
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• pp.85-92
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• 2023

2014년 12월, 가축 및 축산물 이력 관리에 관한 법률이 제정되면서 소비자는 축산물 이력정보를 제공받게 되었다. 이러한 축산물이력제는 소비자들에게 먹거리에 대한 투명하고 공정한 정보를 제공하여 신뢰를 높일 수 있는 반면, 정육업계 관계자들에게는 이력 관리로 인한 업무 증가와 과태료 부담을 가져왔다. 본 논문에서는 판매자가 소비자에게 편리하게 축산물 이력정보를 제공할 수 있도록 이력번호 기반의 재고관리 IoT 시스템을 제안하였다. 저울 데이터를 관리하기 위한 전송 프로토콜을 분석하고 모바일 기기에서의 기능 테스트와 검증을 진행하였으며, 안드로이드 기반 기기에서 이력정보와 상품정보를 전자저울과 연동하고 동기화할 수 있도록 사용자 입장에서의 UI/UX를 고려한 디자인 설계와 시스템 기능을 구현하였다. 향후 제안된 방식은 기존 시장에서 사용자의 불편함을 최소화하고 생산 효율성을 향상시킬 것으로 기대된다.

• International Journal of Railway
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• 제2권2호
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• pp.50-59
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• 2009

Numerous train operating companies provide training by means of driving simulators. A detailed analysis in the course of the rail research project 2TRAIN has shown that the simulation technology, the purposes of training and the overall concept of simulator-based training are rather diverse (Schmitz & Maag, 2008). A joint factor however are weak assessment capabilities and the fact that the simulator training is often not embedded into the overall competence management. This fact hinders an optimal use of the simulators. Therefore, 2TRAIN aims at the development of enhanced training and assessment tools. Taking into account that several simulators are already in use, the focus lays on the extension of existing simulation technology instead of developing entirely new systems. This extension comprises (1) a common data simulation interface (CDSI), (2) a rule-based expert system (ExSys), (3) a virtual instructor (VI), and (4) an _assessment database (AssDB). The foundation of this technical development is an assessment concept (PERMA concept) that is based on performance markers. The first part of the paper presents this assessment concept and a process model for the two major steps of driver performance assessment, i.e. (1) the specification of exercise and assessment and (2) the assessment algorithm and execution of the assessment. The second part describes the rationale and the functionalities of the simulator add-on tools. Finally, recommendations for further technical improvement and appropriate usage are given. based on the results of a pilot study.

• 무역상무연구
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• 제60권
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• pp.213-234
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• 2013

e-Trade 3.0 era which means the expansion of seamless e-Trade process into global business has been come. e-Trade is in the evolution stage with the reflection of time changes and IT development. Furthermore e-Trade marketing method of SMEs has been generalized. However, SMEs have not utilized e-Trade marketing very actively even if it has much benefits in exploring overseas marketing. In this regard this paper has cautiously suggested the strategic using plan of e-Marketplace and SNS along with policy improvement in order to promote extensive diffusion of e-Trade marketing. First of all, a comprehensive evaluation system has to be developed for the assessment of overseas marketing program and provide organized guideline including SMEs support system. Also e-Marketplace operation company is necessary to invent management system for supervising and detecting risk factors of participating firms and business model to share information which each e-Marketplace possesses through mutual connection. Finally, the effective supports such as short-term education and acting operation of initial account to use SNS strategically are needed and continuous contents development to adopt SNS is absolute.

• 한국항해항만학회지
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• 제39권2호
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• pp.107-113
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• 2015

This paper analyzes and evaluates the importance of energy saving measures based on qualitative survey. Through literature review and group interviews with specialists, 4 factors, 13 measures for energy savings, and 4 evaluation criteria were selected to carry out an Analytic Hierarchy Process (AHP) analysis. At the first stage of AHP analysis, the importance of factors was derived, and then the importance of 13 measures. Lastly, the cross examination of 4 factors was carried out in order to evaluate the best possible qualitative considerations. The result revealed that 'choosing the best course weather', is the most important factor with the highest value on applicability and operational complexity criteria. These results may imply that operational considerations are regarded as a main factor to be taken into account when considering appropriate energy saving measures.

• Journal of Electrical Engineering and information Science
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• 제2권3호
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• pp.105-112
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• 1997

The performance of a shared memory multiprocessor system is very sensitive to process scheduling. w can enhance the performance of a whole system as well as of an individual process by taking the multiprocessor characteristics into account in the design of the process scheduler. In this paper, we proposed a general purpose scheduler for a shared memory multiprocessor, called the Two-Level Multi-Scan (TLMS) process scheduler, that considers the processor affinity loosely and decreases the interference among multiple processors greatly. The TLMS scheduler is composed of a local scheduler at each processor and a semi-global scheduler that balances the load among processors. In particular, the semi-global scheduler tries to minimize priority inversion, which is an important factor of the system performance. The TLMS scheduler also tries to reduce the number of resources to be shared and improves the processor utilization. to meet these requirements, th semi-global scheduler interacts with the operation of the local scheduler when a need arises, thus the name is loose processor-affinity. We also show that the proposed scheduling technique can be extended for other types of resources making it a general purpose resource management queue.

• 한국컴퓨터정보학회논문지
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• 제15권2호
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• pp.35-39
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• 2010

웹 2.0 시대가 되면서 참여와 개방이라는 개념 하에 사용자가 주체가 되어 직접 콘텐츠를 제작하는 UCC가 널리 퍼지고 있다. 이러한 UCC가 널리 이용됨에 따라 저작권 문제 역시 큰 문제로 등장하고 있다. 이에 본 논문에서는 UCC 저작권 보호를 위한 DRM 시스템을 제안한다. 제안하는 시스템은 UCC 콘텐츠의 유통에 DRM기술을 적용하여, UCC 제작자가 자신이 생성한 컨텐츠에 정당한 권한을 행사 할 수 있게 하였다. 또한 저작권 문제가 발생 시 저작권 침해 사용자를 추적할 수 있도록 하였으며, 원본 콘텐츠의 제작자가 통제가 가능하다는 장점을 가지고 있다.

• Nuclear Engineering and Technology
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• 제42권5호
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• pp.590-599
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• 2010

Recently, efficient operation and practical management of power plants have become important issues in the nuclear industry. In particular, typical aging parameters such as stress and cumulative usage factor should be determined accurately for continued operation of a nuclear power plant beyond design life. However, most of the major components have been designed via conservative codes based on a 2-D concept, which do not take into account exact boundary conditions and asymmetric geometries. The present paper aims to suggest an effective fatigue evaluation methodology that uses a prototype of the integrated model and its transfer functions. The validity of the integrated 3-D Finite Element (FE) model was proven by comparing the analysis results of individual FE models. Also, mechanical and thermal transfer functions, known as Green's functions, were developed for the integrated model with the standard step input. Finally, the stresses estimated from the transfer functions were compared with those obtained from detailed 3-D FE analyses results at critical locations of the major components. The usefulness of the proposed fatigue evaluation methodology can be maximized by combining it with an on-line monitoring system, and this combination, will enhance the continued operations of old nuclear power plants.

• Journal of Information Technology Applications and Management
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• 제21권3호
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• pp.1-17
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• 2014

In this study, various characteristics of R&D related economic variables were studied to analyze complexity of science and technology activities in Korea, as reliance of R&D activities of the private sector is growing by the day. In comparison to other countries, this means that it is likely to be fluctuated by economic conditions. This complexity characteristic signifies that the result of science and technology activities can be greatly different from the anticipated results - depending on the influences from economic conditions and the results of science and technology activities which may be unpredictable. After reviewing the results of 17 variables related to science and technology characteristics of complex systems intended for time-series data - in the total R&D expenditure, and private R&D expenditure, numbers of SCI papers, the existence of chaotic characteristics were. using Lyapunov Exponent, Hurst Exponent, BDS test. This result reveals science and technology activity of the three most important components in Korea which are; heavy dependence on initial condition, the long term memory of time series, and non-linear structure. As stable R&D investment and result are needed in order to maintain steady development of Korea economy, the R&D structure should be less influenced by business cycles and more effective technology development policy for improving human resource development must be set in motion. And to minimize the risk of new technology, the construction of sophisticated technology forecasting system should take into account, for development of R&D system.