• The Journal of the Korea Contents Association
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• v.8 no.9
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• pp.19-26
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• 2008

With the development of ubiquitous computing and the construction of infrastructure for one-to-one personalized services, the importance of context-aware services based on user's situation and environment is being spotlighted. The smart home technology connects real space and virtual space, and converts situations in reality into information in a virtual space, and provides user-oriented intelligent services using this information. In this paper, we proposed the discovery of the behavior sequence pattern using the mining in the smart home. We discovered the behavior sequence pattern by using mining to add time variation to the association rule between locations that occur in location transactions. We can predict the path or behavior of user according to the recognized time sequence and provide services accordingly. To evaluate the performance of behavior consequence pattern using mining, we conducted sample t-tests so as to verify usefulness. This evaluation found that the difference of satisfaction by service was statistically meaningful, and showed high satisfaction.

• Journal of Korea Society of Industrial Information Systems
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• v.24 no.5
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• pp.129-137
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• 2019

Ubiquitous computing technology is emerging as information technology advances. In line with this, a number of studies are being carried out to increase device miniaturization and user convenience. Some of the proposed devices are user-friendly and uncomfortable with hand-held operation. To address these inconveniences, this paper proposed a virtual button that could be used in watching television. When watching a video on television, a camera is installed at the top of the TV, using the fact that the user watches the video from the front, so that the camera takes a picture of the top of the head. Extract the background and hand area separately from the filmed image, extract the outline to the extracted hand area, and detect the tip point of the finger. Detection of the end point of the finger produces a virtual button interface at the top of the image being filmed in front, and the button activates when the end point of the detected finger becomes a pointer and is located inside the button.

• KOMUNHWA
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• no.68
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• pp.25-39
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• 2006

This article attempts to define identity, role and functions of a university museum and to suggest specialization of the university museum in the perspective of culture, arts, and science. A university museum is defined as a center for the service of the university community and its development which acquires, researches, communicates, exhibits and educates, for purposes of eduinfotainment,29 material evidence of people and their environment. The target user of the today's university museum are not only professors, students, university workers, but also university neighbourhood such as the related professionals, patrons, parents, school children and villagers. A multi-dimensional and multi-purpose university museum can be established and managed in a real world and / or a cyber world in the perspective of culture, arts, and science. Based on a ubiquitous system30 in a cyber world vis-a-vie a real world, the university museum can be easily utilized by users anywhere, anytime and any device. In order to specialize the university museum in the perspective of culture, arts and science, it is desirable that the university museum director with the CEO of the university community promote the specialization of the university museum based on philosophy and strategies of university community management after they definitely evaluate the components and resources of the university museum such as human powers, museum collections, organizational, technological, capital, spacial and symbolic resources, The specialization of the university museum should be projected and executed in the direction of maintaining the typical scope of museum activities and managing the effective museum management. Specializing the university museum in the perspective of culture, arts, and science can contribute not only to establish the identity of the university community and to perform role and functions of the university museum but also to encourage academic development, to revaluate the brand of the university community and to promote the marketing for the university.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2008.05a
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• pp.491-494
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• 2008

최근 유비쿼터스의 활용이 확장되고 있다. 헬스분야에도 예외는 아니다. 기존의 헬스 싸이클은 단지 고정된 싸이클에 현재 자신의 속도와 맥박 등의 일반적인 정보만 제공하기 때문에 장시간이나 장기간의 운동을 하기에는 시간이 지날수록 흥미도가 떨어지고, 자신에 맞는 운동을 하기도 어렵다. 본 논문에서 논의하는 헬스 싸이클은 센서 네트워크와 DB를 접목한 상증 인식 시스템을 이용하여 자신이 현재 상태와 운동 진행 상태를 분석한 맞춤 운동을 할 수 있다. 사용자는 부착된 체온센서와 심전도센서를 통해서 자신의 상태를 실시간으로 확인하게 된다. 센싱된 신호들을 효율적으로 관리하기 위해서 센서네트워크를 형성하여 모든 신호들은 싱크노드에 집중되게 된다. 이 신호들과 DB에 기록된 사용자의 과거 운동기록을 활용하여 현재 운동중인 사용자의 신체적인 상태를 체하게 된다. 이러한 상황인식을 통해서 운동자에게 위험한 요소를 제거하거나 효과적인 운동이 가능하도록 자동으로 제어해주는 것이 이 헬스싸이클의 특징이다. 또한 여기에 충격감지 센서, 유압펌프제어, Python을 이용한 3D 게임엔진을 더하여 운동시에 가상현실적인 상황을 만들고자 하였으며 장시간의 운동에도 흥미가 떨어지지 않도록 하는 것도 상기 헬스싸이클의 특징이다.

• Electronics and Telecommunications Trends
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• v.24 no.3
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• pp.24-31
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• 2009

IMT-Advanced 무선전송 시스템 단말모뎀 플랫폼은 다중 반송파 변조 기술, 채널 부호화 기술, 셀 탐색/동기 기술 등 핵심이 되는 요소 기술인 고속 무선 전송 기술을 구현할 수 있는 하드웨어 구조, 기능 및 인터페이스를 설계 제작하였다. 상기 단말모뎀 플랫폼에서는 기저대역 모뎀 물리계층 기능인 변조, 복조, 부호, 복호, 동기를 위한 각각의 FPGA가 실장되는 Daughter Board 형태로 구성되어 L1 기저대역 모뎀 장치에 실장된다. 그리고 PHY 계층(L1)부터 MAE 계층(L2), RRC 계층(L3)까지의 하드웨어 및 소프트웨어 수행을 지원한다. 4G용 단말모뎀을 개발하기 위하여 상용화 이전에 LTE-Advanced 테스트 베드용 단말모뎀 플랫폼을 개발하여 20 MHz 대역폭을 적용 3 km/h의 저속 이동속도에서는 최대 110 Mbps를 수신하고, 최대 55 Mbps를 송신한다. 그리고 120 km/h의 고속 이동속도에서는 최대 55 Mbps를 수신하고, 최대 28 Mbps를 송신한다. 상기 성능을 만족하는 단말모뎀 플랫폼이 개발되면 IMT-Advanced 단말모뎀 플랫폼 기술을 확보하게 된다. 따라서 이동통신 분야에서 기술적인 우위와 시장 선점을 위하여 요소기술 IPR을 확보하고, IMT-Advanced의 표준화 과정에서 이를 국제 표준으로 반영하여 로열티 창출 효과 및 기술 경쟁력을 확보하게 될 것이다. 아울러, LTE 사용자들은 대용량의 고속, 멀티미디어 송 수신을 가능하게 하는 기술로 2010년 이후 가상 현실 서비스, 3D 게임, 센싱 등 사물과 사물이 통신하는 유비쿼터스 서비스로 발전할 것으로 전망한다.

• Proceedings of the Korea Institute of Convergence Signal Processing
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• 2005.11a
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• pp.233-237
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• 2005

수화의 인식 및 표현 기술에 대한 관련 연구는 수화 인식을 통한 건청인과의 의사 전달, 가상현실에서의 손동작 인식 등을 대상으로 여러 방면으로의 접근 및 연구 결과를 도출하고 있다. 그러나 이들 연구의 대부분 데스크탑 PC기반의 수신호(Hand signal) 제어 및 수화 - 손 동작 인식에 목적을 두었고 수화 신호의 획득을 위하여 영상장비를 이용하였으며 이를 바탕으로 단어 위주의 수화 인식 및 표현에 중점을 둔 수화 인식 시스템의 구현을 통해 비장애인과의 자유로운 의사소통을 추구하고 있다. 따라서 본 논문에서는 햅틱 장치로부터 사용자의 의미있는 수화 제스처를 획득하기 위한 접근 방식을 차세대 착용형 PC 플랫폼 기반의 유비쿼터스 환경으로 확대, 적용시켜 제스처 데이터 입력 모듈로부터 새로운 정보의 획득에 있어 한계성을 극복하고 사용자의 편의를 도모할 수 있는 효율적인 데이터 획득 방안을 제시한다. 또한 퍼지 알고리즘 및 RDBMS 모듈을 이용하여 언제, 어디에서나 사용자의 의미 있는 문장형 수화 제스처를 실시간으로 인식하고 표현하는 수화 제스처 인식기를 구현하였다. 본 논문에서는 수화 제스처 입력 모듈(5th Data Glove System과 $Fastrak{\circledR}$)과 차세대 착용형 PC 플랫폼(embedded I.MX21 board)간의 이격거리를 반경 10M의 타원 형태로 구성하고 규정된 위치로 수화 제스처 데이터 입력모듈을 이동시키면서 5인의 피실험자에 대하여 연속적으로 20회의 반복 실험을 수행하였으며 사용자의 동적 제스처 인식 실험결과 92.2% 평균 인식률을 도출하였다.

• Journal of the Institute of Electronics Engineers of Korea SC
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• v.42 no.4 s.304
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• pp.11-18
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• 2005

For expressing intention the human often use body languages as well as vocal languages. Of course the gestures using arms and hands are the representative ones among the body languages. Therefore it is very important to understand the human arm motion in human-computer interaction. In this respect we present here how to estimate 3D pose of human arms by using computer vision systems. For this we first focus on the idea that the human arm motion consists of mostly revolute joint motions, and then we present an algorithm for understanding 3D motion of a revolute joint using vision systems. Next we apply it to estimating 3D pose of human arms using vision systems. The fundamental idea for this algorithm extension is that we may apply the algorithm for a revolute joint to each of the revolute joints of hmm arms one after another. In designing the algorithms we focus on seeking closed-form solutions with high accuracy because we aim at applying them to human computer interaction for ubiquitous computing and virtual reality.

• Journal of the Korean Institute of Landscape Architecture
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• v.47 no.2
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• pp.59-75
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• 2019

This study was carried out to explore the 4th Industrial Revolution technology from the perspective of the landscape industry to provide the basic data necessary to increase the virtuous circle value. The 4th Industrial Revolution, the characteristics of the landscape industry and urban regeneration were considered and the methodology was established and studied including the technical classification system suitable for systematic research, which was selected as a framework. First, the 4th Industrial Revolution technology based on digital data was selected, which could be utilized to increase the value of the virtuous circle for the landscape industry. From 'Element Technology Level', and 'Core Technology' such as the Internet of Things, Cloud Computing, Big Data, Artificial Intelligence, Robot, 'Peripheral Technology', Virtual or Augmented Reality, Drones, 3D 4D Printing, and 3D Scanning were highlighted as the 4th Industrial Revolution technology. It has been shown that it is possible to increase the value of the virtuous circle when applied at the 'Trend Level', in particular to the landscape industry. The 'System Level' was analyzed as a general-purpose technology, and based on the platform, the level of element technology(computers, and smart devices) was systematically interconnected, and illuminated with the 4th Industrial Revolution technology based on digital data. The application of the 'Trend Level' specific to the landscape industry has been shown to be an effective technology for increasing the virtuous circle values. It is possible to realize all synergistic effects and implementation of the proposed method at the trend level applying the element technology level. Smart gardens, smart parks, etc. have been analyzed to the level they should pursue. It was judged that Smart City, Smart Home, Smart Farm, and Precision Agriculture, Smart Tourism, and Smart Health Care could be highly linked through the collaboration among technologies in adjacent areas at the Trend Level. Additionally, various utilization measures of related technology applied at the Trend Level were highlighted in the process of urban regeneration, public service space creation, maintenance, and public service. In other words, with the realization of ubiquitous computing, Hyper-Connectivity, Hyper-Reality, Hyper-Intelligence, and Hyper-Convergence were proposed, reflecting the basic characteristics of digital technology in the landscape industry can be achieved. It was analyzed that the landscaping industry was effectively accommodating and coordinating with the needs of new characters, education and consulting, as well as existing tasks, even when participating in urban regeneration projects. In particular, it has been shown that the overall landscapig area is effective in increasing the virtuous circle value when it systems the related technology at the trend level by linking maintenance with strategic bridgehead. This is because the industrial structure is effective in distributing data and information produced from various channels. Subsequent research, such as demonstrating the fusion of the 4th Industrial Revolution technology based on the use of digital data in creation, maintenance, and service of actual landscape space is necessary.