• Archives of design research
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• v.18 no.2 s.60
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• pp.273-282
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• 2005

In this study, we proposed Context Cube as a conceptual model of user context, and a Multi-modal Interaction Design framework to develop ubiquitous service through understanding user context and analyzing correlation between context awareness and multi-modality, which are to help infer the meaning of context and offer services to meet user needs. And we developed a case study to verify Context Cube's validity and proposed interaction design framework to derive personalized ubiquitous service. We could understand context awareness as information properties which consists of basic activity, location of a user and devices(environment), time, and daily schedule of a user. And it enables us to construct three-dimensional conceptual model, Context Cube. Also, we developed ubiquitous interaction design process which encloses multi-modal interaction design by studying the features of user interaction presented on Context Cube.

• The Journal of the Korea Contents Association
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• v.11 no.5
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• pp.489-499
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• 2011

While lots of information service providers utilize the information visualization to deliver information clearly and efficiently, the misuse of information visualization can occur many problems. We evaluated and analyzed visualization elements mainly applied to the representative information services. To find out the relation between attributes of visualization elements and efficiency of information service, we had analyzed attributes of target elements before we have evaluated. Through this study we revealed that Information visualization on information service has to be applied with considering the characteristics of information and each visualization element, and its elements can be optimized and support users to obtain intuitive insight when they are complementally combined and offer sufficient attributes additionally. We expect that the result of this study will be a guide for utilizing information visualization and developing visualization elements.

• Journal of Service Research and Studies
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• v.12 no.2
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• pp.48-64
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• 2022

The metro played a role in improving and alleviating the problems of urban ground transportation, promoting rational development of the city and at the same time leading the development of metro-related industries. There is no doubt that it had a double effect of enormous economic and social benefits on the development of the country as a whole. The purpose of this study is to apply the concept of servicescape to the metro and establish the definition of the Metro Servicescape(MSS). To this end, the service space and service facilities of the metro were analyzed, and the existing domestic and foreign literature related to servicescape was studied. First, this study defined the concept of servicescape of metro. Second, 10 elements suitable for the metro service landscape were derived through domestic and foreign service landscape studies. Third, through field surveys and analysis of metros in five cities in Seoul, Busan, Daegu, Daejeon, and Gwangju, the ranking of the current status of the domestic metro servicescapes was 203 Seoul metro, 197 Busan metro, 192 Daegu metro, 178 Gwangju metro, There were 172 metro lines in Daejeon. Among them, the four elements of comfort, sociality, cleanliness, and safety are the same, and accordingly, it seems that each city metro is the same standard. However, the six elements of aesthetics, spatiality, convenience, entertainment, openness and information were found to be different for each city metro. It is expected that the results of this study can provide a reference value for future metro service landscape research.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.21 no.6
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• pp.177-193
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• 2022

In the near future, it is expected that the use of autonomous mobility-on-demand services will increase. Considering its complicated service components, including vehicle convenience, driving and matching speed, and platform convenience, the priorities of them will need to be determined for a successful establishment. In this context, this study examined the importance rank of each service component through an online survey of potential users of autonomous mobility-on-demand services. As a result of the AHP (Analytic Hierarchy Process) with respect to the upper-level components, driving and matching speed component is selected as most important, followed by platform convenience and vehicle convenience. Mean rank analysis with respect to lower-level components showed that the in-vehicle congestion level of vehicle convenience, waiting time of driving and matching speed, and pre-booking availability of platform convenience each ranked first. Additional analysis regarding each group was conducted to establish a group-specific strategy. As a result, it would be better to focus on a vehicle than a mobile platform when designing services for the region with a high proportion of the older. Moreover, it is recommended to speed up the driving and matching speeds more than the current public transport, alleviate in-vehicle congestion, and enable the users to book the schedule in advance.

• The Journal of the Korea Contents Association
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• v.5 no.3
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• pp.201-208
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• 2005

To guarantee the quality of service for user request, we should consider various kinds of things. The important thing of QoS is that response time of service is transparently suggested 'to network users. We can know the response time of service using the information of network latency, system latency, and software component latency, In this paper, we carried out the modeling of network latency and analyzed the effects of packets loss to the network latency, Also, we showed the effectiveness of modeling using the NS-2. This research can help to provide the effective methods in case of SLA(Service Level Agreement) agreement between service provider and user.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2006.06a
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• pp.381-384
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• 2006

인터넷과 IT 인프라의 증가는 인터넷 기반의 전자상거래 시스템의 성장을 주도하였고, 이와 관련된 새로운 형태의 서비스가 나타나는 계기가 되었다. 그러나, 현재 전자상거래 서비스는 구매자가 웹에 접속하여 인터넷 쇼핑몰에 보이는 상품을 선택하여 결제 및 상품을 수신하는 방식으로 이루어진다. 또한 구매 판단을 결정할 때 최저가격 외에 신속한 배송, 부가 서비스 등의 다양한 의사결정 요소가 있음에도 불구하고, 인터넷 쇼핑몰에서 제시한 최저가의 판단요소에 의존함으로 구매자가 수동적인 입장이 된다. 따라서, 본 논문에서는 이러한 문제점을 해결하기 위해 상호간에 의견교환 및 사용자가 정한 우선순위에 따른 판단을 효과적으로 할 수 있는 서비스인 게임이론 기반의 지능모델을 제시한다 게임이론은 전통적으로 경제문제 협상과 정치문제 협상, 워 게임 등에 적용되었다. 본 연구에서는 이 점에 착안하여 게임이론 알고리듬을 이용하여 e-Commerce를 위한 지능모델에 적용하여, 기존의 수동적이고 사용자의 취향에 따라 다양한 의사결정 요소를 선택 할 수 없었던 문제를 해결한다.

• Journal of the Korean Society for Library and Information Science
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• v.50 no.3
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• pp.215-247
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• 2016

This study was performed in order to derive components that librarians think preferentially necessary and realistically important when applying the NCS 'Library and Information Administration's duty' to the library working environments. It was possible by evaluating and analyzing the importance and utilization of ability unit and its element which are the components of NCS 'Library and Information Administration's duty'. First, ability units of 'User Information Services', 'Reading and Culture Programs' were higher in importance and utilization at the same time. Ability units of 'Library and Information Practical Research Perform', 'Library and Information Curation', 'Library and Information System Operation' were lower in importance and utilization when we evaluate the importance and utilization of ability unit and its element which are the components of NCS 'Library and Information Administration's duty'. Second, components of 'Reading and Culture Programs', 'User Information Service', 'Library and Information Collection' were higher in the order, and components of 'Library and Information Curation', 'Library and Information System Operation', 'Library and Information Practical Research Perform' were found lower in demands as the desirable level and the current level appear less common when we analyzed the demands on the duty components utilizing Borich requirements analysis model. Third, six ability units of 'Reading and Culture Programs', 'User Information Services', 'Library and Information Collection', 'Library and Information Services Marketing', 'Library and Information Preservation', 'Library and Information Use Analysis' were derived as priority components when we analyzed the priority of the duty component (ability unit) utilizing The Locus for Focus model.

• Management & Information Systems Review
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• v.30 no.2
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• pp.113-131
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• 2011

Today, researches on logistics service quality or supply chain management are highlighted due to intensification of competition and diversification of needs for customer service. This study have done a comparative analysis on supply chain partnership members' perception difference about importance of logistics service quality factors. It measured perception about logistics service quality which suppliers, carriers, and buyers regard as important and then conducted t-test in order to compare perception difference. It was found that quality factors of logistic service which suppliers, carriers, and buyers in supply chain partnership perceive as important were different. And disagreements among members were found in most items when market orientation and long term orientation was low while there was no difference among most members when market orientation and long term orientation was high.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.20 no.6
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• pp.1096-1102
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• 2016

Various services have been provided due to the recent development of IT technology and widespread usage of smartphones. In recent years, Fintech service that provides financial services through mobile devices has been the trending issue. However, mobile payment services haven't been widely used. The risk factors that appear when users seek to utilize a service, in particular, is one of the biggest hinderance in the expansion of mobile payment services. The failure of gaining the trust of the consumers appear to be the continuing hinderance factor. Therefore this study is to analyse the impact of perceived risk factors on trust and continuance intention of mobile payment services. For the research purpose, we conducted survey and the research results show that most of perceived risk factors have influence on trust and continuance intention except on the impact of perceived financial risk on trust.

• Journal of the Korean Society for information Management
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• v.22 no.3 s.57
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• pp.147-162
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• 2005

This study aims to suggest a new approach to economic valuation of the special library, in response to the necessity of economic justification of the special library operated by firms and research institutes. Benefit measurement elements and analysis methods to be used in the study were derived through feasibility evaluation on models in previous studies, and objectivity and applicability were the criteria for feasibility evaluation. Depending on which type of resources are used in providing service, different benefit measurement elements and methods were applied. Based on this, calculation formula for service valuation of special library was presented. The development of analysis model for economic valuation of special library made it possible to objectively prove the value of the special library, and is considered to provide an opportunity to publicize the real value of the special library.