• Proceedings of the Safety Management and Science Conference
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• 2008.11a
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• pp.583-588
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• 2008

세계 각국은 새로운 유비쿼터스 환경변화에 맞추어 전략적 차원에서 u-IT에 대한 연구와 다양한 프로젝트를 추진 중이다. 그 중 지역수준에서 u-정보화의 편익을 체감 할 수 있고, 지역산업 발전에도 기여할 수 있는 u-City 서비스 모델들을 발굴하여 집 중적으로 추진함으로써 지역 구성원들간 삶의 질을 제고하고 관련 산업의 성장을 도 모하고 있다. 그러나 유비쿼터스 환경의 중심 기술 중 하나인 RFID 기술은 다양한 기술적용환경과 표준화되지 않은 일부 기술들로 인하여, u-City 사업의 기대효과를 부 각시키지 못함은 물론 실제 지속적인 서비스모델로 적용하기도 쉽지 않은 상황이다. 따라서 본 연구에서는 기존의 문제점을 보완하여 새로운 u-City 서비스 모델로써 u-Zone 서비스 구축시에 필요한 듀얼밴드를 적용한 RFID 시스템의 소프트웨어 모듈과 OID개념을 도입한 데이터 프로토콜 표준적용에 관한 연구 방안을 모색하고자 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.04a
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• pp.840-842
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• 2012

오늘날의 정보통신 환경은 유비쿼터스 IT기술의 시대로 진입하고 있다. 유비쿼터스는 사용자가 컴퓨터나 네트워크를 의식하지 않은 상태에서 시간과 장소에 구애받지 않고 자유롭게 네트워크에 접속 할 수 있는 정보와 환경을 의미한다. u-Health(Ubiquitous-Health)는 의료 및 국민 복지에서 떠오르는 분야이며 기존의 의료서비스와는 달리 사용자가 간편하고 언제 어디서나 사용될 수 있는 시스템이다. 기존 u-Health 시스템은 사용자가 착용한 센서로부터 신체 데이터를 제공받고, 제공 받은 데이터로 사용자가 현재 어떠한 상태인지를 파악한다. 그러나 센서로부터 제공받은 신체데이터는 무선통신으로 인한 데이터의 손실 및 오류가 발생하게 된다. 이러한 단점을 극복하고 정확한 환자의 상태를 판단하기 위한 방법으로 온톨로지 기반의 상황인식을 적용하여 기존의 u-Health 시스템 보다 더욱 신뢰성 있는 u-Health 시스템을 구축하고자 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2010.04a
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• pp.214-217
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• 2010

유비쿼터스 컴퓨팅 기술의 발전과 IT-BT-NT를 포함한 기술간 컨버전스 경향은 유비쿼터스 헬스케어(u-Healthcare)의 실현을 가속화하고 있다. u-Healthcare 시스템은 센서 네트워크로부터 수집된 대량의 생체신호를 신속히 처리 분석하여 의료진에게 전달함으로써 시간과 장소에 관계없이 환자에게 적절한 의료 서비스를 제공할 수 있다. 기존의 u-Healthcare 시스템은 모든 이벤트를 전송하였다. 본 논문에서는 미리 정의된 이벤트에 속하는 데이터만 선별하여 베이스 노드로 전송하는 EEF(Embedded Event Filtering) 기법을 적용하여 통신 빈도수와 처리 비용을 줄였다. 시뮬레이션 결과를 통해 기존의 심전도 측정시스템보다 효율적인 시스템임을 확인하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.11a
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• pp.974-976
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• 2008

유비쿼터스 컴퓨팅은 우리의 생활양식을 빠르게 변화시켜가고 있다. 그러한 배경에는 IT 기술 고도화와 무선 통신기술 발달로 인한 센서 네트워크 환경이 있다. 유비쿼터스 환경 속 센서 네트워크 구축에 있어서는 기존 네트워크와는 다르게 정해진 규격의 동일 장비의 네트워크가 아닌 정해진 규격의 다양한 장비들 간의 상호교류 속에서 이루어진 다는 것이 다르다. 또한 무선을 통해 정보를 주고 받기 때문에 주변 환경에 따라서 통신을 위한 추가적인 경비가 더 소모되기도 한다. 본 논문에서는 이러한 센서 네트워크 환경 구축함에 있어 효율적인 방안을 제시하고 RapidPLUS를 이용하여 시뮬레이터를 구현한다.

• 한국노년학
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• v.30 no.1
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• pp.159-177
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• 2010

This study focused on elderly caring issues and proposes Information Technology (IT) as the complementary tool of care activities, and it was aimed to identify application and feasibility of complementary IT for elderly care activities. Focus Group Interview (FGI) was conducted with current and potential caregivers respondents to explore caregivers' opinions and needs of care activities, and to suggest roles of IT which are helpful for elderly caregiving. The results showed that caregivers desire to check elderly care receivers' health, safety, and location whenever and wherever they want, and these caregivers' needs can be satisfied with IT by supporting caring ubiquitously. Moreover, this article provided more specific guidelines of IT applications for elderly caring services, so it expected positive roles of IT for elderly caring activities. However, this paper consequently emphasized IT must focus on only supporting and complementary roles of caregiving activities rather than alternative roles to enhance caregivers' caring efficiency and reduce their caring burden.

• Journal of Broadcast Engineering
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• v.10 no.4 s.29
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• pp.557-575
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• 2005

Much research in core technologies has been done to make it possible the ubiquitous video services over various kinds of user information terminals anytime anywhere in the way the users want to consume. In this paper, we design plototypesystem architecture for the ubiquitous TV program content consumption based on user preference via various kinds of intelligent information terminals in digital home environment, and present an implementation and testing results for the prototype system. For the system design, we utilize the TV Anytime specification fur the consumption of TV program contents based on user preference in TV programs, and also use the MPEG-21 DIA (Digital Item Adaptation) tools which are the representation schema formats in order to describe the context information for user environments, user terminal characteristics, user characteristics for universal access and consumption of the preferred TV program contents. The proposed ubiquitous content mobility prototype system is designed to make it possible to seamlessly consume contents by a single user or multiple users via various kinds of user terminals for the TV program contents they watch together. The proposed ubiquitous content mobility prototype system in digital home environment consists of a home server, a display TV terminal, and an intelligent information terminal. We use 42 TV programs contents in eight different genres from four different TV channels in order to test our prototype system.

• 한국HCI학회:학술대회논문집
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• 2008.02a
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• pp.573-578
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• 2008

Recently, we should control various devices such as TV, audio, DVD player, video player, and set-top box simultaneously to manipulate home theater system. To execute the function the user want in this situation, user should know functions and positions of the buttons in several remote controllers. Normally, people feel difficult due to these realistic problems. Besides, the number of the devices that we can control shall increase, and people will confuse more if the ubiquitous home environment is realized. Therefore, user adaptive interface that provides the summarized functions is required. Moreover there can be a lot of mobile and stationary controller devices in ubiquitous computing environment, so user interface should be adaptive in selecting the functions that user wants and in adjusting the features of UI to fit in specific controller. To implement the user and controller adaptive interface, we modeled the ubiquitous home environment and used modeled context and device information. We have used Bayesian network to get the degree of necessity in each situation. Behavior selection network uses predicted user situation and the degree of necessity, and it selects necessary functions in current situation. Selected functions are used to construct adaptive interface for each controller using presentation template. For experiments, we have implemented ubiquitous home environment and generated controller usage log in this environment. We have confirmed the BN predicted user requirements effectively as evaluating the inferred results of controller necessity based on generated scenario. Finally, comparing the adaptive home UI with the fixed one to 14 subjects, we confirmed that the generated adaptive UI was more useful for general tasks than fixed UI.

• Archives of design research
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• v.19 no.5 s.67
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• pp.323-334
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• 2006

The continuous development of digital technology has actualized ubiquitous computing, and the environment of human life has come to face changes. Prediction of the future so that human life may be prepared can be very important. A number of predictions of ubiquitous space are presented, ranging from related professional research to mass media, However, proper analyses and understanding are required to understand ubiquitous space and apply it to design. This study seeks to understand ubiquitous space through analysis of the trend in digital technology from a new perspective, to research cases, and predict the future of ubiquitous space. Human, object, and environment have been set as basic factors as the subjects smoothly exchanges various types of information in the physical space, and the trend in digital technology is analyzed. From a human-oriented perspective, the background and development trend of digital technology has been analyzed under the theme of interaction and interlace. From an object-oriented perspective, an analysis was unfolded under the theme of products' evolvement from radios to robots. From an environment-focused perspective, an analysis has been carried out under the theme of situation recognition, intrinsic factors, and integration and connectivity. By applying the analytic results, the types of studies that predict the future of ubiquitous space and generate concepts have been classified and analyzed into three different types of studies for experiment, industry, and public. In this manner, ubiquitous space has been forecasted. This study seeks a systematic analysis of the understanding of the trends in digital technology and employs a case study of ubiquitous space based on systematic analysis. In consideration of all these, this study is expected to contribute to concept generation and development by designers.

• Journal of the Korea Society of Computer and Information
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• v.18 no.7
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• pp.125-137
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• 2013

Seoul city provided u-tourism services for inbound tourists' convenience. These services began in April, 2010 and were completed in advanced way by the end of 2011. Seoul city developed a brand fit to the new services simultaneously for communicating it. Recently, there are so many cities in the world that steadily try to give favorable impression and images to people. In the study, we analyze the process of brand building to present a guideline for city brand and tourism service brand building. The study includes a series of brand making process such as environment of brand, customer analysis, design of brand platform, brand hierarchy, visualization of various brand factors, strategies of operation and performances of brand awareness and draw a conclusion and suggest an advice. As for implication, the study shows the necessity of service brand launching plus Seoul official brand(Hi, Seoul), the service brand including ubiquitous concept, development of brand factors with complementarity and observation of systematical methodology.

• Journal of Intelligence and Information Systems
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• v.16 no.1
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• pp.17-43
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• 2010

This research considers the role of knowledge as marketing message, designs and analyses the personal experience management (PEM) business model using Human-Reader system. It is difficult to save and manage person's daily experience and relevant contents due to the lack of proper infrastructure and system. On the contrary, using Human-Reader infrastructure, person's experience and various relevant contents can be easily saved and managed because seamlessness between offline and online and the various devices that person can always carry along in ubiquitous environment. Since person can store and manage information, contents and advertisements through Human-Reader system and u-PEMS, marketing messages and advertisements do not have to be repetitive and stimulating. Instead, marketing messages and advertisements in Human-Reader environment should be granting values that can be saved and managed. We propose various scenarios, processes and its issues. And we analyze the expected value of RFID tag used on the proposed business model by so-called 'Tag Evaluation Model' and assess the assumptions that are basis of the proposed business model for evaluate the feasibility of the u-PEM business model.