• Journal of the Korea Institute of Information and Communication Engineering
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• v.22 no.6
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• pp.922-928
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• 2018

Recently, various researches have been studied to support service-oriented IoT networking. This is because the IoT environment coexists with various service devices for providing the service in a certain unified area. Thus, in this network environment, an effective data delivery service is not provided in a network configuration. Also, in order to provide efficient IoT services in this network environment, new scheme is necessary to recognize services by themselves and to construct network structures for each service. In this paper, we propose a service oriented self-constructive network (SO-SCN) scheme that can construct a service-oriented network in IoT environments composed of various service devices. The proposed scheme is a method that can minimize the network overhead required for service provisioning and extend the network lifetime. Through simulation, we show that the proposed service oriented self-construction network scheme improves the performance, in terms of the number of packets generated for end-to end data transmission and the end-to-end delay.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2017.05a
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• pp.611-612
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• 2017

Recently, exhibition space has incorporated a format in which visual contents providers and viewers can directly or indirectly experience the space with a sense of immersion. By offering more extended spatiality within a limited space, such exhibition design is now transcending physical limitations and expanding to visual reality; as such, exhibition design demands the implementation of not only visual elements but information services generated between people, contents, and objects. To this end, this study examines the changes and the development direction of exhibition techniques that use Internet of Things (IoT), which is a representation of environmental change in exhibition design of our times; it also explores the various forms of change based on the perception of the visual contents (visual exhibits) users during the act of accumulating and using information through the smartphone communication of viewers who experience the space through IoT. Finally, the study conducts a case study on the relationship between a regular exhibition and an exhibition design that makes use of IoT, in order to propose an exhibition design with which to verify whether the viewers are immersed in and experience a sense of realism from visual contents by identifying the viewers' visual and emotional changes.

• Proceedings of the Korean Society of Computer Information Conference
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• 2008.06a
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• pp.111-115
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• 2008

Textile industry of Domestic has been descended in the sector of design, brand, recognition comparing with developed countries. And products of middle and low price do not have competitiveness against developing countries. In addition, textile industry market is changing from the provider market-oriented to consumer-driven market. RFID(Radio Frequency Identification) is the core technology to correspond in the these environmental change. RFID is a technology that is used to communicate with identified objects using radio waves, so that the objects can be recognized, tracked and traced. In this study, we reviewed characteristic and present condition of domestic textile industry and newest technology aspect of RFID. Also, we suggested application plan of RFID technology in textile industry through the analyzing RFID application case of domestic and outside the country textile industry.

• The Journal of the Korea institute of electronic communication sciences
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• v.10 no.2
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• pp.297-304
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• 2015

Importance and necessity is enlarged due to globalization. So, English education is diverse and recently applies AR(Augmented Reality) technology to offer immersion and interest. Contents in this paper are Mobile AR contents for training infant English cognition. Our system displays teaching aid objects into 3D models, lets infants listen to English conversation and teaches them everyday English like a play. Considering infants that like games, this system adds an English game about each object of teach aids. To attract infants and parents interest persistingly, We give them immersion and interest by suggesting a different event at each step.

• The Journal of the Korea Contents Association
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• v.10 no.3
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• pp.132-140
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• 2010

RFID-based games, which use a RFID reader and RFID chips, will expand existing computer games, which use a computer screen, a keyboard or a mouse. This paper presents 4 RFID digital board game contents which are conducted by initial developers; the three of them use the screen and control the games with RFID chips and, one is a different attempted game which can exclude the screen and be immersed to the board. While initial developers use object recognition of RFID, we need to develop game contents and game interface which can recognize positions of the objects. According to the initial developer"s developing process, the cooperative system between the game technical developers and the contents developers should be necessary. Also, the interface should be developed for young children to participate and operate.

• Culinary science and hospitality research
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• v.21 no.2
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• pp.52-59
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• 2015

This study evaluated the physicochemical and sensory characteristics of teriyaki sauce added with samultang. Soluble solid content and salinity of teriyaki sauce groups added with samultang were lower than the control. The pH of the samples ranged from $4.16{\pm}0.12{\sim}4.26{\pm}0.12$, a difference that was not significant. Regarding viscosity, as the amount of added samultang was increased, the viscosity of teriyaki sauce decreased. Teriyaki sauce with samultang showed $25.72{\pm}1.52{\sim}32.94{\pm}0.94(%)$ of DPPH radical scavenging activity; free radical scavenging activity of teriyaki sauce significantly increased with an increase samultang. According to the result of sensory evaluation, overall-acceptability was $6.43{\pm}1.96$, which is approximately 10% higher than the other groups. Taken together, the results of this study suggest that samultang is a beneficial ingredient for increasing consumer acceptability and the functionality of teriyaki sauce.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2013.06a
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• pp.372-374
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• 2013

스마트 단말에 장착된 센서들로부터 단말의 상황 정보를 수집하고 분석하여, 상황에 적절한 동영상을 단말에게 스트리밍해 주는 서비스 구조를 제안한다. 스마트 단말은 NFC 또는 QR 코드 기반으로 전시물이나 특정 사물에 기등록된 동영상 정보를 획득하고, 저밀도 기반 WiFi 무선 실내 측위 기술을 사용하여 단말이 위치한 실내 공간 정보를 서버에 제공한다. 상황인지형 스트리밍 서버는 단말이 요청한 정보를 토대로 단말의 해상도에 적절한 동영상을 스트리밍 한다. 설계된 상황인지형 비디오 스트리밍 서비스 구조는 전시와 컨벤션, 대형 기관 및 테마파크의 안내 및 홍보 등의 용도로 활용될 수 있다.

• KIPS Transactions on Software and Data Engineering
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• v.5 no.2
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• pp.59-68
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• 2016

Context-aware services recognize the context of situation environments of users and provide useful services according to the context for users. Usual rule-based systems can be used for context-aware services with the specified rules that express context information and operations. This paper proposes a light-weight rule engine that minimizes memory consumption for resource-constrained smart things. The rule engine manages rules at the minimum condition level, removes memories for intermediate rule matching results, and uses hash tables to store rules and context information efficiently. The implemented engine is verified using a rule set of a mouse training system and experiment results shows the engines consumes very little memory compared to the existing Rete algorithm with some sacrifice of execution time.

• Information Systems Review
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• v.18 no.4
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• pp.173-187
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• 2016

This study on the social effects of Internet of Things (IoTs) provides an overview of future job prospects through the scenario planning approach, highlighting the challenges and opportunities that IoTs will bring in the future. IoTs and the related field of technological innovations have become increasingly important in both academic and business communities in the past few years because of computing power breakthrough and its price drop. IoTs enables people to deal with routine works efficiently and challenges them even in non-routine and/or cognitive tasks, which are considered a unique area for individuals. The scenario planning analysis helps us to define the uncertain boundary and to estimate the potential opportunities and inherent threats to provide decision makers with a mind map on how the development of IoTs can influence employment. To assess the potential effects on jobs described in our scenarios, we briefly examine the local structure of employment and discuss which careers are expected to decline or grow in particular among the 52 standard occupational classifications in Korea.

• KIPS Transactions on Computer and Communication Systems
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• v.6 no.5
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• pp.211-218
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• 2017

Recent robot software platform research focuses on providing intelligent service via abstraction of robot devices. Context-aware techniques are necessary for intelligent robot services, which are based on the perception of environmental information obtained from heterogeneous sensors in IoT environment. Robot Operating System (ROS) provides protocols to operate robot devices. ROS includes functions for abstracting heterogeneous sensors themselves in order to control the robot, however, it lacks the ability to provide context information that the robot can perceive based on environmental information through consistent collection methods. In this paper, we propose a relay system for ROS to provide context-aware robot service. The proposed system makes it possible for ROS to control and provide context-aware robot services with relay of an external context-aware system and ROS. In experiments, we demonstrate procedures that robot services abstracted from ROS and an external context-aware system works together based on the proposed system.