• 한국멀티미디어학회논문지
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• 제10권12호
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• pp.1612-1621
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• 2007

In this paper, we introduced our designed TDMA (Time Division Multiple Access) based MAC (Medium Access Control) protocol for Home Networks called HomeTDMA. We have implemented and tested it in a test bed using crossbow motes and TinyOS. We also have compared HomeTDMA and CSMA (Carrier Sense Multiple Access) in terms of space and time complexity, channel access time, delivery success ratio, and throughput. Based on our results, HomeTDMA has an advantage over CSMA on channel access time, throughput and delivery success ratioIn the case of complexity, HomeTDMA is more complex compared to CSMA. Thus, CSMA is more appropriate in wireless sensor networks (WSNs) where memory, energy, and throughput are important parameters to be considered. However, HomeTDMA has a natural advantage of collision free medium access and is very promising for home networks where a reliable transmission or data transfer and congestion control is highly preferred.

• 농촌의학ㆍ지역보건
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• 제21권1호
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• pp.47-60
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• 1996

Home health care is one of the important components of health care services. Today, the need and demand for the home health care is increasing. To assess the effects of home visit health services by public health nurses in health center on the stat of health, use of medical services and quality of life by elderly people living at home, a randomized controlled trial was implemented for 65 years or more old people randomly allocated to intervention(93) and control(118) group. Intervention group received 2 visits a month over 6 months. Control group received no home visits. The data was collected in a one-year follow-up survey conducted at Kyongju before and after the intervention which composed of health risk assessment, risk factor education and health related behavior counseling. The prevalence rate of chronic illness was more decreased in intervention group than control group after intervention. The intervention group visited medical facilities less frequently than control group. And the home visit health services encouraged the elderly to practice regular exercise. After the intervention, the score of ADL(activities of daily living), LSI(life satisfaction index) and SSI(social support index) in intervention group were more increased than control group. And the increase of scores was more prominent in 70 years or more old people, female, non-smoker and non-chronic illed elderly rather than others. In conclusion, the regular home visit health services provided by public health nurses were beneficial for the elderly in terms of health promotion and quality of life.

• 근관절건강학회지
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• 제12권2호
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• pp.143-154
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• 2005

Purpose: The aim of this study was to investigate the effects of home care exercise program on knee joint function(WOMAC) and the quality of life in patient with total knee replacement arthroplasty. Method: Forty-one subjects were sampled according to research criteria, and divided into two groups : 21 out of experimental group and 20 out of control group. The patients having treatment of total knee replacement arthroplasty were out of the hospital. After surgery executed, it took 8days for them to recovere their health conditions since 10th day, the experimental group received the home care exercise program per regularly four days interval. Results: 1) After applying home care exercise program, the total score on the WOMAC Index for the control group was $3.09{\pm}.76$. The score of the experimental group was $3.55{\pm}.55$ which is statistically higher than that of the control group. (P=.007). 2) After applying home care exercise program, the score of the quality of life for the control group was $3.09{\pm}.50$. The score of the experimental group was $3.46{\pm}.35$ Which is statistically higher than that of the control group. (P=.007). Conclusion: This figures show that home care exercise program has good results. These findings also indicate that the services of home care exercise program are alternatives for the hospitalization.

• 한국주거학회논문집
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• 제14권3호
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• pp.77-84
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• 2003

This study analyzes the necessity and situation of the improvement of housing quality control system for the consumer. we find several defeats of the Housing Quality Control System in Korea. Especially there is no any organization that manange the total housing quality control. So this study suggest the home warranty system should be established as soon as possible for protectings home-buyers and improving housing quality.

• 복식
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• 제46권
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• pp.143-158
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• 1999

The purpose of this study was to investigate the influence of home environment school life adjustment and demographic variables on the adolescents' clothing attitudes The subjects were 682 middle and high school boys and girls(boys. 342, girls:340) in Seoul Korea. Modesty of boys was influenced by parent's education(-) academic record achievement tendency of home and allowance(-) $(R^2$=8.6%) and girls influenced by affection of home(-) allowance(-) age and academic record$(R^2$=11.2%). Clothing satisfaction of boys was influenced by parents' education self-control tendency of home and school life adjustment$(R^2$=19.4%). girls influenced by allowance affection of home parents' education school life adustment and self-control of home$(R^2$=20.3%) Age was most important in predicting the wearing of regulative clothes of boys. followed by allowance and academic record(-)$(R^2$=26.7%) allowance was most important in girls followed by academic record(-), and achievement tendency of home $(R^2$=19.0%). The present findings mean that the more allowance adolescents received and the lower the academic record the lower the modesty and the their the wearing of regrlative clothes. The school life adjustment and home environment such as achievement affection and self-control tendency were meaningful variables That affect clothing attitude of adolescent.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 학술회의 논문집 정보 및 제어부문 B
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• pp.701-704
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• 2003

The home network system of ubiquitous computing concept is changing present our home life as more comfortable and safe. Also, it permits that we can connect the home network system and control the appliance which is linked to the home network system without limitation in time and place. But, as other systems that use the public network like the Internet, remote control/monitoring of the home network system that use the Internet includes problems such as user's access which is not admitted and information changing. This paper presents the efficient solution about the security problem that is recognized to important problem of the home network system. Also this paper implements the security of the home network system based on the UPnP (Universal Plug and Play), adding VPN (Virtual Private Network) router that uses the IPsec to the home network system which is consisted of the ARM9 and the Embedded Linux.

• 디지털융복합연구
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• 제15권4호
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• pp.259-266
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• 2017

무선 홈 IoT (Internet of Things)상에서 대용량 트래픽 간섭은 패킷 손실의 원인이 되며, 패킷 손실은 무선 홈 네트워크의 QoS와 처리율을 떨어뜨린다. 본 논문에서는 실시간 트래픽과 비실시간 트래픽을 탐지하여 무선 홈 IoT 서비스의 QoS 및 처리율을 향상시키기 위한 새로운 적응형 트래픽 간섭 제어 시스템, ATICS(Adaptive Traffic Interference Control System)을 제안한다. 제안된 시스템은 트래픽 특성에 따라 단기(short term) 트래픽 혼잡 프로세스와 장기(long-term) 트래픽 혼잡 프로세스로 구분하여 트래픽 간섭을 제어한다. 시뮬레이션 결과 제안된 기법은 다른 비교 기법들에 비해서 트래픽 간섭 제어 성능 척도가 더 효율적임을 보인다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2001년도 ICCAS
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• pp.82.5-82
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• 2001

There are lots of wired and wireless home network technologies these days. However, an effective middleware is needed to control devices in home regardless oj any kinds of home network technologies applied. We can integrally and simply control all the home appliances using the architecture that leverages TCP/IP and Web technologies, which is like UPnP control technology. In this paper, UPnP technology and IEEE 1394 technology are introduced., and also UPnP over 1394 is issued. Some results from the implementation show that it is possible to control IEEE 1394 devices using the IP-based UPnP technology instead of just using a direct AV/C command set. So, in the experiment, implements the modeling of the UPnP-enabled IEEE 1394 device which is not present for real. Therefore, promising ...

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2008년도 춘계종합학술대회 A
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• pp.540-543
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• 2008

지능형 홈은 수많은 정보가전기기들이 네트워크로 연결되어 있으며 사용자는 이러한 기기들을 제어하고 관리할 수 있어야 한다. 그러나 지능형 홈을 구성하는 기기들에 대한 사용자 인터페이스는 다수의 기기, 기기별로 서로 다른 제어 방법 등에 의해 복잡하고 사용하기 불편한 특성을 가지고 있으며 이에 대한 연구도 부족한 상황이다. 본 논문에서는 지능형 홈 시스템 보급 장애요인 중 하나인 지능형 홈 서비스 인터페이스의 복잡성을 낮추고 편의성을 높이는 방안을 제시하고 이를 구현하였다. 제안하는 인터페이스는 사용자들이 실제 거주하고 있는 공간을 모델링하고, 사용자 소유의 홈 기기들을 실제 집안에 배치하는 것과 같이 가상공간에 배치하는 등 실제 가정 내에서 홈 기기를 사용하는 것과 같은 패턴으로 지능형 홈 시스템을 사용할 수 있도록 통합 인터페이스를 설계하고 구현하였다. 이는 사용자가 집 안의 홈 기기들의 위치와 상태를 한 눈에 파악할 수 있고, 제어하기를 원하는 기기를 선택하여 직접 제어하는 등 사용자가 장치의 선택 및 제어를 직관적으로 할 수 있는 인터페이스를 제공한다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제12권12호
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• pp.6057-6078
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• 2018

Smart home systems provide a safe, comfortable, and convenient living environment for users, whereby users enjoy featured home services supported by the data collected and generated by smart devices in smart home systems. However, existing smart devices lack sufficient protection in terms of data security and privacy, and challenging security and privacy issues inevitably emerge when using these data. This article aims to address these challenging issues by proposing a private blockchain-based access control (PBAC) scheme. PBAC involves employing a private blockchain to provide an unforgeable and auditable foundation for smart home systems, that can thwart illegal data access, and ensure the accuracy, integrity, and timeliness of access records. A detailed security analysis shows that PBAC could preserve data security against various attacks. In addition, we conduct a comprehensive performance evaluation to demonstrate that PBAC is feasible and efficient.