• Journal of Information Technology Services
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• v.11 no.sup
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• pp.41-50
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• 2012

With the recent advances in smart grid technologies and the increasing dissemination of smart meters, the power usage of each time unit can be detected in modern smart building environments. Thus, the utility company can adopt different price of electricity at each time slot considering the peak time. Korea government also announces the smart-grid roadmap that includes a law for realtime price of electricity. In this paper, we propose an efficient power scheduling scheme for smart buildings that adopt smart meters and real-time pricing of electricity. Our scheme dynamically changes the power mode of each consumer device according to the change of power rates. Specifically, we analyze the electricity demands and prices at each time, and then perform real-time power scheduling of consumer devices based on collaboration of each device. Experimental results show that the proposed scheme reduces the electricity charge of a smart building by up to 36.4%.

• Journal of Fashion Business
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• v.18 no.5
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• pp.82-98
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• 2014

The influence from the increased income and aging society has amplified the interest in the well-being trend and health. People tend to enjoy sports and outdoor life. The development of smart clothing containing heating function to help maintain body temperature has been actively researched after the mid 2000s. However, the domestic study on heating clothing is severely limited. Practical study on designing heating clothing which can be commercialized is needed. The purpose of this study is to develop a commercialized detachable heating vest design through collaboration with a heating vest manufacturer. The results of this study are as follows: 1) Conducted the interview with manufacturer and a demand survey with consumers in order to develop the heating vest design. 2) Developed heating vest design that reflected the wants in the demand survey and sketched the prototype of detachable heating vest. 3) Made a sample of the heating vest and tested the wearability to illustrate the result of this study. Overall, the wearing test result showed high satisfaction for both gender.

• The Journal of Korean Institute of Information Technology
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• v.17 no.1
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• pp.149-156
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• 2019

Mixed reality technology (MR) has become one of the fourth industrial revolution element technologies. MR technology has been widely applied not only as a digital contents industry but also in the fields of architecture, tourism, medical field, and education. In this paper, we propose a collaborative service platform for architectural applications that inter-operate with heterogeneous devices such as MR device, PC and mobile, and develop prototype system and verify it. As a result, the 3D model using the skp extension, which is mainly used in architecture design office, was created by using developed prototype system and generate the MR contents for the hololens, which is the MR device, and the conversion time and normal operation were confirmed.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2009.11a
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• pp.254-257
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• 2009

유비쿼터스 시대가 도래하면서 사용자를 중심으로 하는 서비스에 대한 관심이 증가하고 있다. 더불어 사용자의 특성에 맞는 개인화 된 서비스를 요구하고 있다. 본 논문에서는 유비쿼터스 공간에서 소형화, 지능화되고 있는 개인형 이종 디바이스 간의 협업을 통해 사용자에게 보다 직관적이고 편리한 개인화된 서비스를 제공하기 위한 디바이스 협업 기반 에이전트 기술을 제안한다. 본 연구에서는 센서를 통해 사용자 환경에 대한 정보 및 사용자 정보를 수집하여 기본적인 서비스에 필요한 상황정보를 처리한다. 또한, 유비쿼터스 사용자에게 필요한 멀티모달 서비스를 제공한다. 따라서 일반적인 자동화 서비스 이상의 개인 특성에 맞는 고품질의 서비스를 제공할 수 있다.

• Proceedings of the Korean Information Science Society Conference
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• 2008.06d
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• pp.332-336
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• 2008

오늘날 보이지 않는 수많은 장치들과 소프트웨어들이 서로 연결되어 각각의 사용자들에게 편리한 서비스를 제공하는 유비쿼터스 환경에서 모바일 단말기는 유저와 서비스간의 매개체 역할을 한다. 하지만 자원이 제한적인 모바일 단말기의 특성상 사용 시에 많은 제약이 있다. 이러한 문제를 해결하기위해 가용한 주변의 장치 자원을 연결하여 사용할 수 있도록 표준 인터페이스를 제공하는 기술들이 있다. 하지만 동적으로 변화하는 사용자의 선호도 정보와 장치 자원 정보와 같은 프로파일 정보를 효율적으로 적용하지 못하여 사용자 맞춤형 디바이스를 제공하지 못하는 문제점이 있다. 본 논문에서는 유비쿼터스 환경에서 이러한 프로파일 정보를 효율적으로 적용하여 사용자 맞춤형 자원 공유 서비스를 제공하는 시스템을 제안한다.

• 한국IT서비스학회:학술대회논문집
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• 2008.11a
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• pp.559-562
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• 2008

IT와 건설 산업간 융합의 대표적 사례로서 유비쿼터스 도시의 개념이 도입된 이후 현재 여러 지자체에서 u-City 구축이 확산되고 있다. 한편, u-City에 구축된 첨단 인프라의 활용성을 극대화하여야 한다는 부담감이 다양한 u-서비스에 대한 고민으로 이어 졌으며, 이로부터 u-디바이스간 협업의 개념이 파생되었다. u-디바이스간협업의 예로는 공공장소에서의 개인 미디어 재생과 같은 응용이 자주 거론되고 있다. 그러나 음향 미디어의 재생에 있어서는 그 재생의 품질이 서비스의 만족도에 중요한 역할을 할 것이다. 이에 본고에서는 하이파이 재생 시스템의 모델로부터 고충실도 음향 재생을 위한 기능요소를 추출하고, 이를 기반으로 하이파이 응용을 위한 u-서비스 제공 구조를 제시하고자 한다.

• Asian Journal for Public Opinion Research
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• v.7 no.3
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• pp.143-168
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• 2019

With much attention being paid to the rapid growth of wrist-worn smart devices, this study aimed to examine the micro-processes that determine an individual's adoption of smart bands and smartwatches. Primarily relying on the theoretical background of the extended technology acceptance model (TAM II), this study explored relationships between three groups of predictors-social, personal, and device-oriented-and the three main components of the original TAM: perceived usefulness (PU), perceived ease of use (PEOU), and behavioral intention (BI). Results from the path analysis indicated multiple factors played significant roles in increasing the PU, PEOU, and BI of wristworn smart devices: subjective norms, social image, self-efficacy, perceived service diversity, and perceived reasonable cost. The main findings from this research contribute to significantly improving the understanding of the main factors leading people to adopt wrist-worn smart devices.

• Asian Journal for Public Opinion Research
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• v.7 no.3
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• pp.169-198
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• 2019

This study focused on the increase in refugee-related discourse in Korean society with the recent inflow of asylum seekers to Jeju Island. The purpose of our study was to understand the trends in public opinion concerning the acceptance of refugees by analyzing the content of refugee-related video commentary on YouTube. Topic modeling was conducted to analyze the main points, context, and ideas in the comments. The results indicated that the media mainly focus on the pros and cons of refugees, restricting the refugee issue to the problem of acceptance with a narrow focus on the case of Jeju Island. Refugee acceptance was treated as overwhelmingly unacceptable in the comments. We found that commenters often used negative discourse in the comments as a device for reproducing and amplifying hate speech.

• Journal of Korea Society of Digital Industry and Information Management
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• v.14 no.4
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• pp.27-33
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• 2018

The recent efforts in academia and industry represent a paradigm shift that will extend the IoT from the home environment so that it is interoperable with the Internet of Vehicles (IoV). IoV is a special kind of IoT. It allows to connect between vehicle and things located in infrastructure. Furthermore, IoV enable to create new intelligent services through collaboration with existing various services such as smart city and connected home. In this paper, we develop a service in order to realize IoV. To this end, we design a novel vehicle service platform which could automatical controlling the IoT device according to drivers' voice. To show practical usability of our proposed platform, we develop a prototype service could be call car-to-thing (C2T). We expect that our proposed platform could eventually contribute to realizing IoV.

• Korea Science and Art Forum
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• v.20
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• pp.307-314
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• 2015

Tele-Gesture is a tangible user interface(TUI) device that allows a user to physically point to a 3D object in real life and have their gestures play back by a robotic finger that can point to the same object, either at the same time, or at another point in time. To understand the extent of the gestures as new way of digital collaborative communication, collaboration situation and types were experimented as TUI implementations. The design prototype reveals that there is a rich non-verbal component of communication in the form of gesture-clusters and body movements that happen in an digital communication. This result of analysis can contribute to compile relevant contributions to the fields of communication, human behavior, and interaction with high technology through an interpretive social experience.