• Journal of Digital Convergence
• /
• v.10 no.3
• /
• pp.191-196
• /
• 2012

The importance of hi-tech communications technology including mobile or ubiquitous system and the related business field is currently expanding. In terms of wellness for enhancing quality of individual life, ICT technology became a requirement, not an option. The first purpose of this study is to identify factors that influence user's perceived usefulness & perceived ease of use related to the acceptance of TAM focused on ubiquitous fitness service through multiple regression analysis, thereby discovering important factors influencing consumer behavior. In conjunction with the result, the second purpose of this study has also its implication on the u-Healthcare system development using QFD. That is, this research is to propose the possibility of combining the external variables of TAM to u-Healthcare system service characteristics with user requirement reflected by using QFD method. Based on these results, the suitable system may be constructed and developed.

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

• Journal of Advanced Navigation Technology
• /
• v.13 no.4
• /
• pp.577-585
• /
• 2009

Various studies on individual health-care application services have been lively going on due to recent development of information and communication technology and improvement of life quality. Moreover, U-health care area is emerging as a new growth industry as the demand of U-health care service for a quality life grows with the development of medical technology and ubiquitous environment. U-health care system for crew members on ships, who need to spend much time on sea far from their families, is especially needed because they find their job much more stressful not only physically but also mentally than any other people in different jobs do and have less chance to get proper medical services in time. In this paper, we suggested how to get more accurate and objective U-health wellbeing index by complementing SF-36, the general heath care index model in order to managing health of crew. Also we designed the U-health wellbeing index service system which can provide appropriate sports programs or diet contents according to health index.

• The KIPS Transactions:PartC
• /
• v.17C no.2
• /
• pp.173-180
• /
• 2010

Information technology is being applied to the development of ubiquitous healthcare system, which provides both efficient patient care and convenient treatment regardless of patient's location. However, the increasing number of users and medical information give rise to the problem of user management and the infringement of privacy. In order to address this problem we propose a user access scheme based on the RBAC (Role Based Access Control) model. The preceding trust management model for Grid security, FAS(Federation Agent Server), was analyzed and extended to provide supplementary functions for role-based access control in u-Healthcare system. The RBAC model provides efficient user management and access control, but very vulnerable in case when one with valid role tries to leak confidential inner medical information. In order to resolve this problem, a RBAC-WS (Work Status with RBAC) model has been additionally developed which allows only qualified staffs to access the system while on duty. Th proposed RBAC and RBAC-WS model have been merged together and applied to the PACS (Picture Archiving and Communication System).

• Journal of KIISE:Computing Practices and Letters
• /
• v.13 no.6
• /
• pp.378-387
• /
• 2007

To enhancing the exercise effect, exercise management systems are introduced and generally used. They create the proper exercise program through exercise prescription after determining the personal body status. When the exercise programs are created, they will consider $2weeks{\sim}3months$ period. And, existing exercise programs cannot respect with personal exercise habits or exercise period which are changing variedly. If exercise period is long, it can be caused inappropriate exercise about user current status. To solve these problems in legacy systems, this paper proposes a Context Aware Exercise Model (CAEM) to provide the exercise program considering the user context. Also, we implemented that as Intelligent Fitness Guide (IFG) System. The IFG system is selectively received necessary measurement values as input values according to user's context. If exercise kinds, frequency and strength of user are changing, that system creates the exercise program through exercise optimization algorithm and exercise knowledge base. As IFG is providing the exercise program in a real time, it can be managed the effective exercise according to user context.

• ICROS
• /
• v.18 no.3
• /
• pp.24-32
• /
• 2012

최근 유비쿼터스 환경을 실현하기 위한 노력이 활발히 진행되고 있다. 대표적으로 센서 네트워크를 예로 들 수 있는데, 센서 네트워크란 다양한 위치에 선치된 태그와 센서노드를 통해 사람과 사물, 환경정보를 인식하고 그 정보를 무선으로 수집해 언제 어디서나 자유롭게 이용할 수 있도록 구성된 네트워크를 의미한다. 이를 실현하기 위해 센서 네트워크를 적용한 물류, 환경제어, 홈 네트워크, 헬스케어, 교통 등 다양한 응용분야가 적용되고 있는 가운데, 센서 네트워크 분야는 거대해지고 응용분야가 확장될 것으로 예상된다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2006.11a
• /
• pp.705-708
• /
• 2006

IT 정보 기술발전에 힘입어 시간과 장소에 제약받지 않고 언제, 어디서나 네트워크 서비스를 이용할 수 있는 유비쿼터스 시대에 우리가 살고 있다. 이러한 유비쿼터스 환경에서 자주 언급되고 핵심 기술로 부각되고 있는 것이 USN(ubiquitous sensor network)의 센서(sensor) 기술이며, 센서를 이용한 응용 기술 연구가 활성화되어 있다. 이러한 센서 기술 개발로 유비쿼터스 환경이 진일보 우리 생활에 영향을 미치고 있지만 향후 센서를 이용한 실생활 접목 기술 또한 더욱 활성화 될 것으로 보인다. 이에 본 논문에서는 유비쿼터스 환경에서 기본으로 구성되어야 할 기술인 센서 네트워크에 대한 개요를 살펴본다. 또한 센서로부터 생체 데이터 획득(예, 체온, 맥박 등)을 센서로부터 실시하여 질병 진단을 수행하기 위한 운영체제를 살펴보며, 본 연구를 기반으로 구축하게 될 센서를 이용한 의료진단 시스템 데이터 모델링과 의료진단 시스템 구축을 위한 구정에 관하여 살펴본다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2008.05a
• /
• pp.495-498
• /
• 2008

This paper describes design of a real-time, wearable reflectance pulse oximetry which is based Wireless Sensor Network. For the purpose of continuously monitoring vital signs of a human, wearable reflectance pulse oximetry is built into a wrist type that can be obtained $SpO_2$ value of patient unobtrusively. This designed $SpO_2$ module is based on a low-power 8 bit ATmega128L microcontroller operating in 3V. Low power operating $SpO_2$ module was integrated to wireless sensor node for user's health monitoring. This paper is focused on the successful integration of all these components into wearable reflectance pulse oximetry and evaluates its ability to measure patient' $SpO_2$ value. Information from this sensor was wirelessly transmitted to a base-station for storage and display purposes.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2011.05a
• /
• pp.793-795
• /
• 2011

In this paper, an wet diaper sensor system for u-healthcare is implemented and designed. The u-healthcare system of wet diaper sensor consists of sensor node, data-logger/gateway, and server or user terminals. The sensor node includes $NH_3$, humidity, and temperature sensors and TI CC2530 chip, and the data-logger/gateway can connect to a communication network and send the aggregated data from the sensor nodes to a server, and the server can manage the situation of the sensor node and make another analyzed information. Also user terminals can request and obtain the information necessary from the server. The algorithm for detecting wet diaper is proposed, and using the proposed algorithm, the sensitivity for detecting wet diaper is 100%.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.10 no.11
• /
• pp.2107-2112
• /
• 2006

As growing up of elderly population, the interesting on healthcare system in normal life using W is increasing. An integrated u-healthcare service architecture with IEEE 802.11 and IEEE 802.15.4 based sensor network and code divisi(m multiple access(CDMA) public mobile telecommunication networks was designed and developed. Sensor nodes with electrocardiogram(ECG), body core temperature sensors are attached on the patients' body. The healthcare parameters are transferred to web server via CDMA mobile network or through existed LAN network. The existed LAN network is suggested to be used for continuous monitoring of patient's health status in hospital while mobile networks can be used for general purpose at home or outdoor where infra networks unavailable. This system enable healthcare personal to be able to continuously access, review, monitor and transmit the patients information whereever they are, whenever they want. And immediately check their status by using cellular phone and obtain detail information by communication with medical information server through CDMA. By using this developed integrated u-healthcare service architecture, we can monitor patients' health status for 24 hours.