• Knowledge Management Research
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• v.17 no.2
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• pp.187-204
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• 2016

In this study, we investigated the repeated vist of the e-village shopping mall as an online agricultural business platform. We applied Pine and Gilmore (1998) theory for the e-village website information systems. We hypothesized that 4 dimensions such as entertainment experience, educational experience, esthetic experience, and escapist experience toward satisfaction and, moreover, we investigated the moderating trust effect of satisfaction and repeated visit website. We set those independent variables (entertainment experience, educational experience, esthetic experience, and escapist experience) and dependent variable as experience satisfaction. The results indicated that the 4 experiences factors had a positive effect on the experiential satisfaction, and the trust moderating effect has a negative effection between the experiential satisfaction and the repeated visit. The experiential satisfaction had a positive effect on the repeated visit of e-village websites.

• Journal of KIISE:Computer Systems and Theory
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• v.26 no.2
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• pp.145-154
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• 1999

본 논문에서는 주어진 문제의 루프 알고리즘으로부터 시스톨릭 어레이 구현이 용이한 정규 순환 방정식으로의 자동적 유도를 위한 대수적인 방법과 조건을 제시하였다. 이를 위하여 계산점 집합과 순차 정렬 벡터를 구하고, 행렬의 커널을 이용하여 자료 흐름 벡터를 찾았으며, 정규 파이프라이닝 가능성 조건을 제시하였다 그리고 각 계산점에 대한 배열 원소의 초기 입력 위치를 구하였다. 본 논문에서 제시된 방법을 사용하면 주어진 루프 알고리즘을 정규 순환방정식으로 자동적으로 유도 할 수 있으며, 주어진 알고리즘이 정규 순환 방정식으로 유도될 수 있는지를 검사할 수 있다.

• Journal of Information Technology Services
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• v.10 no.2
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• pp.189-202
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• 2011

It is important issue how to evaluate the economic feasibility of computing factors in the real world when we build ubiquitous spaces. In this paper, we propose a simple model that can evaluate the economic feasibility of mobile RFID-based ubiquitous computing system which enables seamless communication between offline and online via embedded computing factors in the real world. To achieve this, we explore the meaning of mobile RFID system, the difference between our research and extant researches concerning the evaluation of economic feasibility in RFID system, and propose the so-called 'Tag-based Evaluation Model' (TEM) which is an evaluation model to access the economic feasibility of mobile RFID systems. We also analyze the TEM via simulation cases based on proposed model and discuss the future of TEM.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.27 no.8
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• pp.67-74
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• 2013

Major utilities have been focusing on R&D and nationwide business of AMI system which plays a vital role in SmartGrid whose concept is to maximize energy efficiency and optimize electric power facility management with exchanging real time information between utilities and consumers based on ICT technologies in power grid. In this paper, we suggest a power loss monitoring method using KEPCO's AMI system which is operating in fields and with the acquisition of AMI data and analyses verify the validation of a power loss monitoring method.

• KIEE International Transactions on Power Engineering
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• v.5A no.4
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• pp.390-395
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• 2005

The most widely used index for the vulnerable area investigation has been the reactive power margin or sensitivity analysis. But we can only obtain the results of these analyses if the results of load flow are convergent in severe contingencies. Otherwise these methods are not adoptable. This paper presents a good index for overcoming severe contingencies, though the power flow equation is unsolvable using the branch parameter continuation power flow. In simulation, the Korea Electric Power Corporation (KEPCO) Systems are applied.

• Proceedings of the KIEE Conference
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• 2006.07a
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• pp.183-184
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• 2006

전력계통 관리와 정보교환 분야의 표준화는 국제전기 기술위원회(International Electrotechnical Commission, IEC) 산하의 57 전문위원회(Technical Committee, TC57)에서 주로 다루고 있다. 그 중에서도, 특히 에너지관리시스템 응용프로그램 인터페이스 기술과 배전관리용 시스템 인터페이스 기술에 관한 표준을 주로 다루는 전문가그룹(Working Group, WG)이 WG13과 WG14이다. 본 논문에서는TC57 개요와 WG13/14를 중심으로 국제표준화 기술동향과 향후 기술전망에 대해 소개하고자 한다.

• Journal of the Korea Safety Management & Science
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• v.10 no.3
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• pp.81-87
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• 2008

The reliability prediction and evaluation for general electronic components are required to guarantee in quality and in efficiency. Although many methodologies for predicting the reliability of electronic components have been developed, their reliability might be subjective according to a particular set of circumstances, and therefore it is not easy to quantify their reliability. In this study reliability prediction of electronic components, that is the interface card, which is used in the CNC(Computerized Numerical Controller) of machine tools, was carried out using PRISM reliability prediction specification. Reliability performances such as MTBF(Mean Time Between Failure), failure rate and reliability were obtained, and the variation of failure rate for electronic components according to temperature change was predicted. The results obtained from this study are useful information to consider a counter plan for weak components before they are used.

• STI Policy Review
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• v.6 no.2
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• pp.24-53
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• 2015

Foresight, a major methodological tool in the STI policy toolbox, has recently featured new directions in methodological development, becoming influenced by progress in information and communication technologies and online tools. However, no overview of these directions has been available so far. Based on a literature review, an interactive workshop, and an international expert survey as well as expert interviews, the research presented here attempts to shed light onto some of the relevant issues by providing a structured overview of recent changes in order to further the debate on the future directions of methodological development in foresight. The paper outlines four clusters of emerging approaches in foresight:Integrated qualitative and quantitative approaches, IT-based and automated foresight, experiential foresight including new forms of communication and interaction such as visualization and gaming, and open and crowd-sourced approaches. The benefits and challenges of the approaches known so far are categorized and summarized, and areas of potential use for each of the clusters in STI contexts are identified.

• Proceedings of the KWS Conference
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• 2002.10a
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• pp.330-335
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• 2002

Resistance spot welding is one of the most widely used processes in sheet metal fabrication. Quality assurance of welding has been important to increase the productivity. In this study, weld quality estimation using primary circuit dynamic resistance applied to the in-process real-time systems. For quality estimation, factors relating to quality were extracted from the dynamic resistance, measured in the timer. The relationship between these factors and weld quality was determined through a artificial neural network model. This method has the advantage over the conventional one, such as obtaining the quality information without the use of extra devices.

• Journal of Korean Medical classics
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• v.22 no.4
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• pp.167-176
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• 2009

This study aim to organize knowledge of the Oriental Medicine using the 'Wisdom of Crowds', and also results could be learned effectively. The progress of the research aims to understand the classic documents easily using the existing systems resources that is related to the information Oriental Medicine. As a result, the system that could understand how to deal with the existing definition of terms individually easily via cross reference, and also sort out and arrange without damaging the order of documents related to the Oriental Medicine was built up. In return, the system that could be handled by many participants could create and edit the knowledge of the Oriental Medicine together.