Usability of Ubiquitous Services : A Critical Review of Literature from evaluation of ubiquitous service

Sangwoo Bahn,Ilsun Rhiu,Wonjoon Kim,Joohwan Lee,Myung Hwan Yun 대한인간공학회 2011 대한인간공학회 학술대회논문집 Vol.2011 No.10

Objective: The aim of this study is to review literatures on the usability of ubiquitous service, and examine whether two approaches-usability and service quality approaches-are sufficient for the evaluation of ubiquitous service. Background: The emergence of ubiquitous technology and subsequent changes in life are bringing about incoming issues in service industry. Just as mobile payment system enabled users to replace annoying cash exchange in return for new problems of privacy and security, so is happening with commercial prevailing of ubiquitous service. It is, therefore, important to put all possible issues into consideration in evaluating a service with new technology, which necessitates inter-disciplinary approaches. Method: Prior to examination, current service concepts of ubiquitous system are observed, and related literatures are reviewed to delineate the attributes of ubiquitous service. Then, collected attributes of ubiquitous service are categorized into 3 perspectives: technology-, service-, and user-oriented attributes. User-oriented attributes are examined if they can be evaluated by typical usability approaches. Similarly, both technology- and service-oriented attributes are examined if they can be evaluated by service-quality approaches. Results: For usability approach, 'invisible' and 'unobtrusive' attributes of ubiquitous service is hard to be captured because typical usability test is dependent upon what user perceives. Also, service quality approach lacks holistic point of view to evaluate the scope of service properly. Conclusion: An analysis of various evaluation methods presents that the evaluation of ubiquitous services should consider the purpose of evaluation, the focus of evaluation and various evaluation techniques for further development. Application: It is expected that the results of this study could provide new direction of evaluation method for ubiquitous service.

부산국제영화제 관광동기, 만족, 재방문의도에 미치는 영향관계

박현지(Hyun Ji Park),양정윤(Jeong Yoon Yang),주현식(Hyun Sik Joo) 한국호텔외식관광경영학회 2009 호텔경영학연구 Vol.18 No.3

As the role of IT technology in tourism industry becomes increasingly important, the user`s behavior for the ubiquitous tourism service should be identified. So in this study, we analyze how the users respond to the ubiquitous tourism service for PIFF(Pusan International Film Festival). We study the interaction among the tourism motives, the satisfaction and the usage intention of the ubiquitous tourism service. Drawing on the data from 195 participants in PIFF who experienced the ubiquitous tourism service, we statistically analyzed these data using factor analysis, reliability analysis and multiple regression analysis. The finding shows that there are 1) the significant relationship between tourism motivations and U-PIFF service factor satisfaction, 2) the partial relationship between tourism motivations and U-PIFF information service factor satisfaction, 3) the significant relationship between satisfactions(U-PIFF service factor satisfaction and U-PIFF information service) and revisit intention. This study presents important implications for ubiquitous tourism service as follows. The first implication is that users are more satisfied with static image as the contents than dynamic image because the function as the-state-of-the-art technology of speed and display is limited. Secondly, the data about tourism as ubiquitous service should be simple and timely updated because ubiquitous tourism service is real time service. Thirdly, event markets are appeared prospective for ubiquitous tourism service because event tourists such like U-PIFF participants are more willing to pay for this service than any other tourists.

유비쿼터스 서비스 모델의 성과 평가 모형 개발에 관한 연구

남세일(Se-il Nam),김민관(Min-Kwan Kim),이차영(Cha-Young Lee),한창희(Chang Hee Han) 한국데이타베이스학회 2008 Journal of information technology applications & m Vol.15 No.1

The introduction of a ubiquitous environment has realized commercial ubiquitous services in various industrial fields and government area. The central and/or local governments are demanding an appropriate investment evaluation model for ubiquitous service. Thus, this study develops and suggests an evaluation model for ubiquitous service by reflecting its characteristic of promoting public good, as well as its broad ripple effect on people. The investment evaluation model for ubiquitous service suggested by this study is based on Cost Benefit Analysis Method. Especially, the ‘Benefit’ is analyzed in two aspects; ‘Economic Benefit’, which shows the benefit that ubiquitous service providers to the overall local economy, and; ‘Financial Benefit’, which shows the profit of individual investors participating in the introduction of ubiquitous service. The investment evaluation model for ubiquitous service suggested by this study can be used by the central and/or local government during their evaluation for investment before introducing a ubiquitous service. Also, when introducing a ubiquitous service in public field, the model can be used to support the decision making of private businesses for investment. Finally, it can be used to promote and inform the expected benefits of introducing a ubiquitous service to local residents.

Towards Ubiquitous Robotic Companion: Design and Implementation of Ubiquitous Robotic Service Framework

Young-Guk Ha,윤현수,Joo-Chan Sohn,Young-Jo Cho 한국전자통신연구원 2005 ETRI Journal Vol.27 No.6

In recent years, motivated by the emergence of ubiquitous computing technologies, a new class of networked robots, ubiquitous robots, has been introduced. The Ubiquitous Robotic Companion (URC) is our conceptual vision of ubiquitous service robots that provide users with the services they need, anytime and anywhere in ubiquitous computing environments. To realize the vision of URC, one of the essential requirements for robotic systems is to support ubiquity of services: that is, a robot service must be always available even though there are changes in the service environments. Specifically robotic systems need to be automatically interoperable with sensors and devices in current service environments, rather than statically preprogrammed for them. In this paper, the design and implementation of a semantic-based ubiquitous robotic space(SemanticURS) is presented. SemanticURS enables automated integration of networked robots into ubiquitous computing environments exploiting Semantic Web Services and AIbased planning technologies.

유비쿼터스도시의 최소 품질 보장을 위한 필수적인 유비쿼터스도시서비스 제안에 관한 연구

황병주(Hwang, Byung Ju),김병선(Kim, Byeong Sun),이재용(Lee, Jae Yong) 대한공간정보학회 2013 대한공간정보학회지 Vol.21 No.1

2000년대 이후, 정부부처별 유비쿼터스도시사업에 의해 유비쿼터스도시 구축을 전국으로 확산해 나가고 있으나, 근래 들어 유비쿼터스도시에 대한 낮은 체감도가 주요 문제로 대두되고 있다. 이를 해결하기 위해 많은 연구와 정책 과제에서 시민체감형 유비쿼터스서비스를 발굴하려는 시도가 이어지고 있지만, 유비쿼터스도시계획을 수립하는 단계에서 이러한 서비스를 효과적으로 접목하기 위한 연구는 부족한 실정이다. 이 연구에서는 유비쿼터스도시 계획 수립단계에서 적용할 수 있는 필수적인 유비쿼터스도시서비스를 도출하여 유비쿼터스도시의 최소 품질을 보장할 수 있는 방안을 제안한다. 이를 위해 먼저, 163개 시·군 지자체를 대상으로 유비쿼터스도시 추진 현황을 조사하여 U-City의 현주소를 진단하였다. 또한 38명의 U-City 관련 전문가를 대상으로 약 한 달 동안 전문가 설문조사를 실시하여 보편성, 지역경제육성, 사회복지구현, 효과적인 도시관리 관점의 필수적인 14개 유비쿼터스도시서비스를 도출하였다. 마지막으로, 11개 지자체의 유비쿼터스도시계획(안)과 도출된 필수 U-City 서비스를 비교하여 시사점을 도출하였다. Since 2000, ubiquitous cities are spread over Korea by government’s supporting project for ubiquitous city construction. But recently problems such as low perception of ubiquitous city are issued. There is just a few studies about a creation of citizen centric ubiquitous city service even though there have been several studies and policies to overcome such problems. There is not enough research on applying ubiquitous city service effectively at the stage of ubiquitous city plan. To solve this problems, this study ultimately aims to suggest essential ubiquitous city service applied at that stage to guarantee minimum quality of ubiquitous city. The expert survey method was employed to select essential ubiquitous city service. To achieve this goal, First, a survey performed by 163 local government officers to know current status of the ubiquitous city construction project. Second, another survey was performed for about 30 days by 38 experts worked at local public official and ubiquitous city organization to select essential ubiquitous city service. Finally we suggested 14 essential ubiquitous city service from the several viewpoints, which were universality, industry growth, social welfare, effective city management. And we analyzed the differences between ubiquitous city services written 14 ubiquitous city plan and essential ubiquitous city services.

유비쿼터스 관광 정보서비스 구축 현황 및 사례 분석

김현정(Hyun-Jeong Kim) 한국콘텐츠학회 2010 한국콘텐츠학회논문지 Vol.10 No.1

최근 유비쿼터스 기술이 발달하고 일상생활에 접목되면서, 관광 정보 서비스에 유비쿼터스 기술 도입이 추진되고 있다. 그러나 유비쿼터스 기술을 적용하고 관광 콘텐츠를 개발하는데 있어 각 지자체는 선례나 기준이 없어 개별적이고 독자적으로 구축, 서비스하고 있는 실정이다. 본 연구는 향후 가속화될 유비쿼터스 관광정보 서비스의 표준적이고 효과적인 구축 방안을 수립하기 위한 기초단계로서 현재 국내에서 구축, 서비스되고 있는 유비쿼터스 관광정보서비스의 사례를 수집, 분석하고자 하였다. 먼저, 문헌 조사를 통하여 관광정보서비스에 활용 가능한 다양한 유비쿼터스 기술 동향에 대해 살펴보고, 유비쿼터스 관광정보서비스의 대표적인 사례들을 수집하여 유비쿼터스 적용기술, 디바이스 활용, 서비스 콘텐츠의 내용과 형식 등 네 가지 측면에서 현황과 문제점을 분석하였다. 분석 결과를 종합하여 향후 유비쿼터스 관광정보 서비스의 개괄적인 구축에 대한 시사점을 네 가지 각 항목에 따라 토의하였다. 본 연구는 각 지자체가 개별적이고 독자적으로 구축하고 있는 유비쿼터스 관광 콘텐츠의 총괄적인 현황과 문제점을 파악할 수 있게 하며, 전국적인 표준안을 마련하여 통합, 구축 및 운영에 대한 필요성을 역설하고 구축을 위한 개괄적인 방향을 시사한다는데 의의가 있다고 하겠다. As ubiquitous technology has been developed and has come into everyday life, it has been integrated to tourism information service. However, each regional government develops ubiquitous tourism information service independently without successful example or standard. Therefore, this paper aims to analyze existing cases of domestic ubiquitous tourism information service as a foundation research to establish standard and effective development strategy for accelerating ubiquitous tourism information service in the future. First, ubiquitous technology trend which can be adapted to tourism information service was reviewed by secondary research. Second, representative cases of ubiquitous tourism information service were collected and analyzed in four aspects such as adapted ubiquitous technology, adapted device, service content and type of content. Finally, overall development strategy of ubiquitous tourism information service was discussed based on the analysis result This paper contributes to get an outline of present conditions and problems of existing ubiquitous tourism information service, suggest overall development direction for ubiquitous tourism information service and point out necessity of the standard and unified plan for nationwide development and management.

유비쿼터스 서비스 평가 방법론에 대한 연구

반상우(Sangwoo Bahn),김원준(Wonjoon Kim),이재홍(Jaehong Lee),윤명환(Myung Hwan Yun) (사)한국CDE학회 2012 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2012 No.2

The purpose of this study is to review literatures on the usability of ubiquitous service, and examine whether two approaches-usability and service quality approaches-are sufficient for the evaluation of ubiquitous service. Prior to examination, current service concepts of ubiquitous system are observed, and related literatures are reviewed to delineate the attributes of ubiquitous service. For usability approach, ‘invisible’ and ‘unobtrusive’ attributes of ubiquitous service is hard to be captured because typical usability test is dependent upon what user perceives. Also, service quality approach lacks holistic point of view to evaluate the scope of service properly. It is expected that the results of this study could provide new direction of evaluation method for ubiquitous service.

SOA Platform in Ubiquitous Factory Concept

Min Hong,Dukhee Lee 한국IT서비스학회 2011 한국IT서비스학회 학술대회 논문집 Vol.2011 No.9

A next generation concept of manufacturing environment called Ubiquitous Factory was proposed last year. This concept was introduced with the purpose of harmonious integration of people and machines for an environment where human creativity, expertise, and experience can exert influence on making more valuable accomplishments with the aid of ubiquitous information technologies. Ubiquitous Factory concept can be defined as a collection of u-Services (Ubiquitous Services) where each u-Service serves a specific purpose in building Ubiquitous Factory and is designed by integrating ubiquitous information technologies to serve the purpose. As various u-Services emerge and as these u-Services contain elements of ubiquitous information technologies where various forms and large quantities of data has to be sent and received, the need for efficient development of u-services, efficient handling of large amount of data transfer and reducing the effort of software development have emerged. In this paper, I propose a concept of Service- Oriented-Architecture in the view of Ubiquitous Factory concept in order to handle the emerging needs mentioned above.

A Usability Assessment Metric for Ubiquitous Services

Joo Hwan Lee,Joobong Song,Myung Hwan Yun 대한인간공학회 2012 大韓人間工學會誌 Vol.31 No.1

Objective: The main objective of this study is to propose a user-centered assessment metric for ubiquitous services. Background: As the ubiquitous era took off, the interactions between ubiquitous services and users have come to take an important position. It is essential to conceptualize a new assessment model that considers human-system interaction capability with a user-centered design perspective. Method: The evaluation model for the interactivity of ubiquitous service was approached from the concept of usability and inter-personality of services. As a validation study, suggested assessment metric was utilized to evaluate the u-Home service. Priority weighting of each assessment metric was derived using the quantification type-Ⅰ analysis. Results: To evaluate interactivity, this study suggested a quantitative metric for user testing performed after classifying the interactivity characteristics to contextualization; ubiquity; user experience; and service capability. Conclusion: This study suggest the metric for the ubiquitous service that are experienced in real life, and introduced the concept of ubiquitous service interactivity. Application: The suggested evaluation metric can be used to evaluate interactivity level of ubiquitous service and identify the potential problem and usability requirements at the early stage of service development.

논문 : SF 영화에 나타난 유비쿼터스 서비스 사례 연구

류혜지 ( Hye Ji Ryu ),정태섭 ( Tae Sub Chung ) 디자인융복합학회 2010 디자인융복합연구 Vol.9 No.6

본 연구의 목적은 미래가 대상인 SF 영화 속에서 나타난 다양한 유비쿼터스 서비스의 종류를 파악하고 분석해 봄으로써, 미래 사회에서 우선적으로 적용 되어야 할 유비쿼터스 서비스들의 종류를 제안하는 것이었다. 연구 방법은 문헌조사와 SF 영화를 대상으로 한 사례조사로 진행되었다. 유비쿼터스 서비스는 안전성, 편리성, 건강성, 쾌적성, 정보성, 경제성, 사회성, 오락성으로 분류하였고, SF 영화는 A.I., I Robot, The Island, The Moon, Minority Report, Bicentennial Man 6편을 선정하였다. 분석 공간은 주거환경, 상업환경, 공공환경 3가지로 구분하였다. 구체적인 연구 결과는 다음과 같다. 첫째, 주거환경 속의 서비스는 편리성, 안전성, 오락성, 건강성과 쾌적성, 정보성, 경제성과 사회성 순서로 나타났다. 둘째, 상업환경 속에서는 안전성과 편리성, 정보성, 건강성 순서로 4가지 종류만 나타났다. 셋째, 공공환경 속에서는 편리성, 안전성, 정보성, 쾌적성과 사회성과 오락성 순서로 나타났다. 이상에서 영화 내용에 따라서 표현되는 공간의 종류와 서비스가 다르지만, 공통적으로 많이 사용되는 유비쿼터스 서비스가 있음을 파악하였다. 본 연구는 영화 속의 유비쿼터스 서비스를 파악하고 분석하여 미래의 유비쿼터스 사회에 제공 가능한 서비스를 제안할 수 있다는데 의의가 있다. The purpose of this study was to analyze the ubiquitous service for future society by investigating SF films. The study methods were literature survey and case study. The ubiquitous services were divided into security, convenience, wellness, comfortableness, information, economic, social and entertainment. The target films were A.I., I Robot, The Island, The Moon, Minority Report, and Bicentennial Man. The results of case study were as follows. First, in residential environments, convenience, security, entertainment, wellness & comfortableness, information, economics & sociality service were found as in order. Second, in commercial environment, convenience & security, information and wellness were found as in order. Third, in public environments, convenience, security, information, comfortableness & sociality, entertainments were found as in order. Finally, according to movie content and services, there were different kinds of ubiquitous service. To analyze the ubiquitous service in the SF film can provide efficiently the ubiquitous service in the future ubiquitous society.