• 한국정보시스템학회지:정보시스템연구
• /
• 제16권4호
• /
• pp.51-73
• /
• 2007

Ubiquitous computing is enhancing computer use by making many computers available throughout the physical environment, but making them effectively invisible to the user. To facilitate the successful adoption and diffusion of ubiquitous computing, it is necessary to figure out the factors affecting the use of U-service. Though the research related to ubiquitous computing has been vigorously conducted from the aspect of system and service provider, there have been very few studies that focus on the user's perspective. Therefore, this study attempts to figure out major factors which are dedicated to the development of ubiquitous computing and u-service, and that ultimately influence the u-business outcome. This study derived the factors that characterize u-service, such as ubiquity, contextual offer, reliability, invisibility, and confidentiality, which are then combined in the TAM model and carry out the path analysis. The research findings indicate that ubiquity affects both the perceived usefulness and perceived ease of use. The reliability and confidentiality were found to affect the perceived usefulness, whereas the contextual offer and invisibility turned out to influence the perceived ease of use. Finally, the relationship among the perceived usefulness, perceived ease of use, and the attitude toward using are identical with the previous research findings related to the technology acceptance model(TAM).

• 한국IT서비스학회지
• /
• 제15권4호
• /
• pp.125-151
• /
• 2016

In recent years, O2O (Online to Offline) services get a lot of attention to improve the trust in online shopping and minimize the inconvenience and the cost burden in offline shopping as the number of consumers, who do not show concern about the purchase platform like online or offline, increases. Even though the services have been getting the spotlight as a strong business platform for next generation commerce, there have been only a few studies on the O2O services. The purpose of this research is to investigate the factors which affect the consumer's intention to use location-based O2O services. The study is based on VAM (Value-based Adoption Model) which is able to analyze those factors from the aspects of benefit and sacrifice. We used the partial least squares (PLS) method for empirical analysis, and the result shows that contextual offers, instant connectivity, webrooming and economic efficiency, which fall under the benefit, affect perceived value positively while annoyance and face consciousness, which fall under the sacrifice, do not affect perceived value significantly. In addition, contextual offers and instant connectivity affect trust positively. Location accuracy, which falls under the benefit of location-based O2O service, do not significantly affect perceived value and trust while security risk affects trust and use intention negatively. It appears that trust affects perceived value and use intention positively.

• ETRI Journal
• /
• 제29권2호
• /
• pp.169-178
• /
• 2007

With the advent of ubiquitous computing environments, it has become increasingly important for applications to take full advantage of contextual information, such as the user's location, to offer greater services to the user without any explicit requests. In this paper, we propose context-aware active services based on context-aware middleware for URC systems (CAMUS). The CAMUS is a middleware that provides context-aware applications with a development and execution methodology. Accordingly, the applications based on CAMUS respond in a timely fashion to contextual information. This paper presents the system architecture of CAMUS and illustrates the content recommendation and control service agents with the properties, operations, and tasks for context-aware active services. To evaluate CAMUS, we apply the proposed active services to a TV application domain. We implement and experiment with a TV content recommendation service agent, a control service agent, and TV tasks based on CAMUS. The implemented content recommendation service agent divides the user's preferences into common and specific models to apply other recommendations and applications easily, including the TV content recommendations.

• 경영정보학연구
• /
• 제22권2호
• /
• pp.167-199
• /
• 2020

본 연구의 목적은 정보통신기술의 발달에 따른 미술관 전시 환경 변화의 한 흐름인 정보통신기술 (ICT) 기반 큐레이션이 미술관 관람객의 몰입과 만족도, 재방문의도에 미치는 영향 관계를 분석하는데 있다. 이를 통해 현재 많은 미술관에서 운영되고 있는 ICT 기반 큐레이션 개발과 서비스 운영관리에 시사점을 제시하고자 한다. 본 연구에서는 위치기반 모바일 큐레이션을 박물관 및 미술관 등에서 제공하는 스마트폰 애플리케이션 또는 스마트 단말기를 이용하여 경험하는, 멀티미디어 전시 해설 서비스로 정의하고, 이에 대한 변수 속성으로서, 재미적 요소인 게이미피케이션(gamification), 이미지/영상 정보품질, 소리/텍스트 정보품질, 상황기반 제공성(contextual offer), 그리고 즉시접속성(instant connectivity) 등 총 5가지 속성을 제시하였다. 이 각각의 속성과 미술관 관람객의 몰입 및 만족도와의 관계, 그리고 재방문의도에 이르기까지의 영향을 밝히고자 설문지기법을 통한 실증 분석을 실시하였다. 본 연구의 주요연구 결과는 다음과 같다. 첫째, 위치기반 모바일 큐레이션 속성들 중에서 게이미피케이션만이 관람객의 몰입에 정(+)의 영향을 미치는 것으로 나타났다. 둘째, 위치기반 모바일 큐레이션 속성들 중에서 관람객의 만족도에 유의적으로 정(+)의 영향을 미치는 것은 즉시접속성과 소리/텍스트 정보품질 요인 등이었다. 셋째, 미술관 관람객의 몰입은 만족도에 정(+)의 관계가 있는 것으로 나타났으며, 마지막으로, 미술관 관람객의 몰입은 재방문의도에 유의적인 영향을 미치지 않았으나, 관람만족도는 재방문의도에 대해 정(+)의 영향을 미치는 것으로 분석되었다.

• 한국콘텐츠학회논문지
• /
• 제13권12호
• /
• pp.402-411
• /
• 2013

스마트폰의 확산과 더불어 모바일 콘텐츠 시장이 성장하고 있다. 모바일을 통한 온라인 콘텐츠 접속은 기존 PC를 기반으로 한 온라인 접속과 구별되는 서비스 전달 특성으로 언제 어디서나 접속할 수 있는 유비쿼터스 접속성과 모바일 사용자의 정보를 바탕으로 상황에 맞는 정보를 전달할 수 있는 맥락적 제안의 특성을 지니고 있다. 본 연구는 이러한 모바일 서비스의 새로운 특성과 더불어 기존의 PC 기반 온라인서비스에 비해 상대적으로 열위에 있는 특성인 시스템의 반응 속도와 비언어적 정보 전달성을 포함해 모바일 서비스의 전달 특성이 사용자들의 상호작용성 지각과 서비스에 대한 태도에 미치는 영향을 확인하였다. 연구결과 유비쿼터스 접속성과 맥락적 제안성은 모바일 콘텐츠 이용자의 상호작용성 지각에 긍정적 영향을 주고 있었으며, 반응속도 역시도 지각된 상호작용성에 긍정적인 영향을 미치고 있었으나, 비언어적 정보전달성은 그렇지 않음을 확인하였다. 반응속도와 비언어적 정보전달성은 모바일 콘텐츠 개발 시 상충관계에 있는 속성이며, 본 연구는 비언어적 정보전달성 보다는 반응속도를 강화했을 때 모바일 콘텐츠에 대한 상호작용성 인식과 서비스 관련 태도에 긍정적인 영향을 줄 것임을 제시하고 있다.

• 한국정보시스템학회지:정보시스템연구
• /
• 제26권4호
• /
• pp.163-188
• /
• 2017

Purpose The purpose of this study is to empirically analyze the factors affecting the intention to use the IPA focusing on functional characteristics. Based on the research result, this research has significance in that it not only suggested strategic guidelines for the related business operators, it also helped identify the factors that will influence the intention to use an intelligent personal assistant centering on the functional characteristics of the IPA. Design/methodology/approach Accordingly, in an attempt to identify factors that will influence the intention to use the intelligent personal assistant, we proposed a research model, together with a corresponding hypothesis, which incorporates the functional characteristics (personalization, anthropomorphism, autonomy, communication ability, contextual offer) and perceived enjoyment of the intelligent personal assistant into a technology acceptance model. To verify the research hypothesis of this research, we have conducted a questionnaire survey with individuals who have used an intelligent personal assistant as target. And with the data collected from 215 copies of the questionnaire survey, we have carried out a path analysis using the PLS structural equation. Findings As a result, it turned out that, of the IPA functional characteristics, personalization had a positive effect on perceived usefulness, autonomy had a positive effect on perceived usefulness and perceived ease of use. Also, communication ability had a positive effect on perceived ease of use and perceived enjoyment, and anthropomorphism and contextual offer had a positive effect on perceived ease of use and perceived enjoyment and turned out to be major factors that increased the use intention of intelligent personal assistant.

• 한국정보시스템학회지:정보시스템연구
• /
• 제17권3호
• /
• pp.175-204
• /
• 2008

Ubiquitous computing is enhancing computer use by making many computers available throughout the physical environment without being noticed to the users. To facilitate successful adoption and diffusion of ubiquitous systems, it is important to find out the factors affecting their uses. Although researches related to ubiquitous computing have been vigorously conducted from the aspect of system and service provider, there have been very few studies that focus on the user's perspective. This study attempts to find out major factors which are dedicated to the development of ubiquitous systems and services and the relationships between these factors and user satisfaction factors. This study derived the specific factors that characterize ubiquitous services, such as ubiquity, contextual offer, user affinity, privacy, reliability, responsiveness, assurance, and empathy. We also considered service quality factors of ubiquitous services. Then these factors were combined with the Expectation Confirmation Theory (ECT) model and the path analysis was applied to find out the factors affecting user satisfaction and the intention to use the systems. The research findings indicate that ubiquity, contextual offer, privacy, reliability, and responsiveness affect the perceived usefulness. The perceived ease of use and confirmation were found to affect the perceived usefulness. The perceived usefulness, perceived ease of use, and confirmation fumed out to influence the satisfaction. It turned out that the result of this study on the relationship between the perceived usefulness and user satisfaction was identical with the findings in previous related ECT researches. We think this study makes two significant contributions to the development of ubiquitous services. First, this study provides basic implications for better ubiquitous services by considering important characteristics of ubiquitous systems as services. Second, this study also suggests important factors that need to be considered when ubiquitous service providers develop new ubiquitous services to improve user satisfaction and the intention to use the services.

• 한국초등수학교육학회지
• /
• 제7권1호
• /
• pp.23-44
• /
• 2003

수학적 맥락 정보를 이용한 문제가 주어졌을 때, 학생들의 문제 해결 활동을 관찰하고 인지적 측면과 정서적 측면에서 분석하였다. 수학적 맥락 문제들은 Freudenthal의 수학 교육 이론과 RME에 따라 구성하였다. 그 결과, 개방된 형태의 맥락 문제가 보다 다양한 풀이를 산출해냄을 알 수 있었다. 따라서 교사는 스스로 형식적 수학을 재발명하고, 학생들로 하여금 그에 걸맞은 인지적 활동이 이루어지도록 나름대로의 교수 학습 방법을 개발하여야 한다.

• Korean Journal of Acupuncture
• /
• 제35권2호
• /
• pp.47-55
• /
• 2018

Objectives: Clinical improvements can be observed following placebo administrations in clinical trials. Randomized controlled trials have been conducted to disentangle the specific effects of therapeutic interventions over the past decade. In acupuncture trials, non-penetrating placebo needles offer the opportunity to determine the specific effects of needling. Methods: The present review provides an overview of the concept of the placebo effect and the characteristics of the placebo needles. Results: Placebo control can contribute to minimize for bias and the contextual and psychological components of therapeutic interventions. Placebo control should meet two criteria: blinding efficacy (indistinguishable from active treatment) and physiological inertness. In the case of acupuncture, however, it is difficult to meet both criteria simultaneously. The dilemma of placebo needles suggests that placebo needles do not constitute proper control in acupuncture research. Considering the characteristics of placebo needles, patients are more likely to perceive placebo needles as active treatment in acupuncture trials compared to placebo pills in pharmaceutical trials. Placebo response might be observed more frequently to placebo needles than to placebo pills. When acupuncture treatments are utilized in clinical use, placebo effects can be enhanced by exploiting patients' expectations in the contextual or environmental cues that surround medical intervention. Conclusions: We have to consider these unique characteristics of placebo needles in order to avoid drawing premature conclusions that acupuncture itself is just a placebo.

• 경영정보학연구
• /
• 제8권1호
• /
• pp.81-99
• /
• 2006

최근 새로운 정보기술 패러다임인 유비쿼터스가 등장함에 따라 그에 관련된 연구와 개발이 활발해지고 있다. 유비쿼터스 환경에서 기업은 효과적인 상품 개발과 서비스를 위해 사용자들이 어떠한 요인에 의해 u-서비스를 이용하는지에 대한 연구가 필요하다. 그러나 유비쿼터스에 대한 기존 연구는 기술 중심적인 연구에 치중되어 서비스나 상품을 마케팅 하는 데는 시사점이 적었다. 본 연구에서는 u-서비스 이용에 영향을 미치는 중요 요인에 대한 실증적 연구를 통해 기업의 입장에서 향후 u-서비스를 개발하고 이용자를 확대하는데 시사점을 제공하고자 하였다. 본 논문은 기존 문헌을 바탕으로 유비쿼터스 개념을 정의하고 유비쿼터스 특성요인을 반영한 u-서비스 수용 모델을 제시하고 이를 실증하였다. 그 결과 u-서비스 이용에 영향을 미치는 요인은 편재성, 상황기반 제공성, 친화성 등이었으며 지각된 가치는 이용의도에 영향을 미치며, 또한 이용 빈도에도 유의한 영향을 미치는 것으로 나타났다. 이러한 실증결과를 바탕으로 u-서비스 활성화를 위한 마케팅적 시사점을 토의하고, 연구의 한계점과 향후 연구방향을 제시하였다.