• 한국문헌정보학회지
• /
• 제47권2호
• /
• pp.265-291
• /
• 2013

건강 및 의료, 그리고 웰빙에 대한 관심의 증가로 이와 관련된 정보원의 이용률, 특히 인터넷상의 건강정보원의 이용률이 급증해 왔다. 또한 공공도서관에서의 건강 및 의료관련 참고질문 건수도 지속적으로 증가하고 있는 가운데, 공공도서관사서는 이러한 유형의 참고서비스를 수행하는데 많은 한계를 느끼고 있다. 이에 본 연구에서는 공공도서관, 의학도서관, 의료기관, 건강 및 의료관련 커뮤니티, 기타 의료정보서비스를 제공하는 모든 관련기관들이 협력하여 건강정보서비스를 제공하는 CHI서비스 활성화를 위한 협력네트워크시스템 구축모형을 제안하였다. 협력모형의 핵심 요소에 해당되는 것으로 협력의 주체, 협력대상 정보원, 협력의 내용, 건강정보원 사이트의 운영, 협력센터의 운영과 역할, 그리고 상업기관과의 협력방향까지 구체적으로 제시하고 있다.

• 한국IT서비스학회지
• /
• 제15권1호
• /
• pp.269-287
• /
• 2016

In general, service failure occurs inevitably and the customers who experienced the greater dissatisfaction have the higher expectations of service recovery. However, most of the previous studies have focused on the evaluation and risk factors of pre-service quality. Thus, this study is contrary to the numerous previous studies and focus on the effectiveness of mobile application advertisement users' perceived perception on service recovery after service fails. A research model presented in this study is based on the Equity Theory and deeply evaluated the effectiveness of Distributive Justice, Interactional Justice, and Authenticity Relevance on Service Recovery. The survey of this study was conducted among 286 users who have experienced a services recovery of mobile application advertising. As a result, among all the factors of users of mobile application advertising, Distributive Justice, Interactive Justice, and Relevance have a positive impact to Satisfaction. In addition, Distributive Justice, Authenticity and Satisfaction also have a positive impact to Trust. Ultimately, Satisfaction and Trust have a positive impact to Service Recovery. The results of this study are expected as a reference for presenting a new business model for mobile application advertising industry, reducing business risk and enriching the related researches.

• 대한산업공학회지
• /
• 제13권1호
• /
• pp.25-29
• /
• 1987

When the historical data are available, the diffusion model, which describes the time pattern of the adoption process of a new product or technology or service, has been used as a reasonable predictor in the telecommunication demand forecasting area. This paper shows that the diffusion model is applicable when the historical data are not available. The model used is in the form of a "logistic" function. The parameters of the function are estimated using the questionnaire and the historical data of reference products. From the questionnaire, an initial and an upper limit long run value of the market share are estimated, and the diffusion time to the upper limit value is determined by the relation between the investment and the utility.

• 시스템엔지니어링학술지
• /
• 제14권1호
• /
• pp.83-88
• /
• 2018

Engineering is a sector with more than three times the industrial effectiveness of manufacturing. In the domestic engineering life cycle, the Operations & Maintenance (O&M) phase is a relatively high level of technology. Based on accumulated knowledge of O&M phase, it is necessary to advance operating technology and expand overseas O&M market expenditure. This study is the early stage of knowledge-based power plant O&M service framework reference model. In this study, we propose a conceptual model of architecture framework for power plant O&M. We survey the architecture framework and reference model and propose conceptual model of architecture framework for power plant O&M. The conceptual model of architecture framework for power plant O&M consists of stakeholder, O&M scenario, O&M technology. In particular, the O&M technology is defined as the fourth industrial revolution intelligence information technology. We defined a meta model from the conceptual model to define the power plant O&M architecture framework. In the future, we intend to development an architecture framework from the conceptual model and meta model.

• ETRI Journal
• /
• 제38권5호
• /
• pp.838-846
• /
• 2016

The objective of digital broadcasting has evolved from providing a plain video service to offering a realistic visual experience. Technologies such as 3DTV and UHDTV have been suggested to achieve this new objective by providing an immersive and stereoscopic visual experience. However, owing to the high bandwidth requirements of such services, the broadcasting industry has faced a challenge to find a new transport mechanism for overcoming the bandwidth limitation. The standardization organizations, the Advanced Television Systems Committee, Digital Video Broadcasting, and Telecommunications Technology Association, have been working on the integration of broadcasting and a broadband network (IP) to resolve the bandwidth issue of realistic video services. This paper introduces a frame-level timeline synchronization and transport system target decoder model for providing a stable 3DTV service over a hybrid network. The experimental results indicate that the proposed technologies can be successfully adopted as a reference model in a broadcast-broadband hybrid 3DTV service and other IP-associated hybrid broadcasting services.

• 한국산업정보학회논문지
• /
• 제17권7호
• /
• pp.59-70
• /
• 2012

본 논문은 SOA기반 시스템에 대해 품질 평가를 하기 위한 품질평가 모델을 제안하고, 이를 이용하여 ISO/IEC 9126을 참조해서 품질 평가 대상이 되는 5개의 품질 속성 즉, 기능성, 신뢰성, 사용성, 효율성, 유지보수성에 대해 품질평가를 하였다. 그 결과는 "기능성", "신뢰성", "사용성", "효율성" 및 "유지보수성"에 대해서 모두 만족하였다. 또한 이들 5개의 품질속성을 종합한 SOA기반 시스템에 대해서도 61.45%로 만족하였다.

• IEIE Transactions on Smart Processing and Computing
• /
• 제2권5호
• /
• pp.255-265
• /
• 2013

3DTV is expected to be a promising next-generation broadcasting service. On the other hand, the visual discomfort/fatigue problems caused by viewing 3D videos have become an important issue. This paper proposes a perceptual quality assessment metric for a stereoscopic video (SV-PQAM). To model the SV-PQAM, this paper presents the following features: temporal variance, disparity variation in intra-frames, disparity variation in inter-frames and disparity distribution of frame boundary areas, which affect the human perception of depth and visual discomfort for stereoscopic views. The four features were combined into the SV-PQAM, which then becomes a no-reference stereoscopic video quality perception model, as an objective quality assessment metric. The proposed SV-PQAM does not require a depth map but instead uses the disparity information by a simple estimation. The model parameters were estimated based on linear regression from the mean score opinion values obtained from the subjective perception quality assessments. The experimental results showed that the proposed SV-PQAM exhibits high consistency with subjective perception quality assessment results in terms of the Pearson correlation coefficient value of 0.808, and the prediction performance exhibited good consistency with a zero outlier ratio value.

• 정보관리연구
• /
• 제27권1호
• /
• pp.1-39
• /
• 1996

본 연구는 EconRef이라는 통합 OPAC의 구현에 관한 것으로서, 이 모델은 참고사서의 효율적인 업무처리를 가능하게 해주고, 이용자에게 조직적이고 신속한 정보서비스를 제공하는 것이다. 통합 OPAC은 REGIS와 The Book House와 같은 실제의 시스템을 기초로 하여 KPWin++를 이용하여 구현하였다. KPWin++는 전문가시스템 쉘로서 하이퍼텍스트와 전문가시스템이 결합되어 있다. 이 통합 OPAC 시스템은 6개의 모듈로 참고봉사 전문가시스템 ; 문헌정보원, 전문가정보원, 통계정보원 ; OPAC ; 외부데이터베이스 ; 이용자안내 등으로 구성되었다. 시스템의 평가는 EconRef 시스템과 초급사서 및 고급사서를 비교하였고, 하이퍼텍스트와 전문가시스템이 결합된 OPAC인 REGIS 시스템과 비교하였다. 비교결과 EconRef 시스템은 고급사서와 유사한 반면 초급사서 보다는 우수한 것으로 나타났다.

• 디지털산업정보학회논문지
• /
• 제9권1호
• /
• pp.9-23
• /
• 2013

In recent days, there are many researches of wireless LAN services as the communication environment of wireless LAN are so improved that a lot of services are available in wireless environments. The frequency of the wireless LAN is a general resource that can be used to everyone without any permission. Many technologies using this ISM (Industry Science Medical) frequency band are developed fast and widely. But, as many devices use the same frequency band at th same time, the service quality is degraded and the speed of the service rate id degraded by the result of the interference. For overcome this problem, we must provide the new technology of the mobile devices and a new cell design scheme for obtaining maximum throughput that considering the wireless environments effectively. In this paper, we explain the main technology at the IEEE 802.11n environments and proposes the optimal cell design and reference model for gaining maximum performance to many mobile devices at the same time by investigating real environment testing results.

• 한국정보시스템학회지:정보시스템연구
• /
• 제28권3호
• /
• pp.227-247
• /
• 2019

Purpose The purpose of this study is to identify the needs of art education suppliers and consumers and develop service models for an art education platform. In order to overcome the limitations of existing services limited to instructor-student customizing functions, our services take into account comprehensive relationships among various stakeholders and activities that constitute the art ecosystem Design/methodology/approach We reviewed the relevant reference and conducted interviews and surveys with stakeholders of art education market, so that identified the demand and functional priorities. Findings We identified the demand and functional priorities for customizing to as to develop major service models(i.e. service models for lessons, cubes, and businesses) for the art education platform.