• Proceedings of the Korea Society of Information Technology Applications Conference
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• 2005.11a
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• pp.243-246
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• 2005

Recent ubiquitous computing environments increasingly impact on our lives using the current technologies of sensor network and ubiquitous services. In this paper, we propose ubiquitous architectural framework for ubiquitous sleep aid service(UbiSAS) in the subset of ubiquitous computing for refreshing of human's sleep. And we examine technical feasibility. Human can recover his health through refreshing sleep from fatigue. Ubiquitous architectural framework for UbiSAS in digital home offers agreeable sleeping environment and improves recovery from fatigue. So we present new concept of ubiquitous architectural framework dissolving stress. Specially, we apply context to context-aware framework module. This context is transferred to context adaptive inference engine which has service invocation function in intelligent agent module. Ubiquitous architectural framework for UbiSAS using context adaptive rule inference engine without user intervention is technical issue. That is to say, we should take sleep comfortably during our sleeping. And sensed information during sleeping is changed to context-aware information. This presents significant information in context adaptive rule inference engine for UbiSAS. This information includes all sleeping state during sleeping in context-aware computing technique. So we propose more effective and most suitable ubiquitous architectural framework using context adaptive rule inference engine for refreshing sleep in this paper.

• Journal of Digital Contents Society
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• v.8 no.4
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• pp.491-497
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• 2007

RPersonal area networking technology is becoming increasingly important in enabling useful wireless home applications. For example, Bluetooth and IEEE 802.11b standards are the most commonly deployed technologies for wireless home applications. However, because both standards share the same unlicensed ISM (Industrial, Scientific, Medical) radio spectrum, severe interference is inevitable and performance can be impaired significantly when heterogeneous devices using the two technologies come into close proximity. In this paper, we research Gaussian FSK Bluetooth system, which is an open specification technology for short-range wireless connectivity between electronic devices. In this paper, we analyzes the effects of co-channel interference on the performance of a Gaussian FSK Bluetooth system. Performance criteria used in the study are the signal to interference power ratio (SIR), interference index, and the bit error rate (BER) in the wireless channel. The effect of co-channel interference from various sources on the performance of a Gaussian FSK Bluetooth system is analyzed using an IGA(Impulsive Gaussian Approximation) method, and these quantities are plotted against Eb/No, $\rho$ and SIR for various channel conditions in figures.

• Journal of Digital Contents Society
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• v.17 no.6
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• pp.479-487
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• 2016

In a Web 2.0 context, users are exposed to numerous smart devices and services that allow real-time interaction between users (or consumers) and developers (or producers). For the provisioning of new user-created services based on user's context, the data management of service creation experiences becomes a non-trivial task. This article introduces a data model for service creation and then proposes a service creation management architecture which enables new service creation using the data model, the management of the service creation data, and the semantic service discovery across internal/external service repositories. The article also explains the use of the proposed architecture with two different scenarios: home and mobile environments. The proposed architecture for service creation data management offers consistent and seamless handling of the service creation data throughout its usage lifecycle.

• Journal of Agricultural Extension & Community Development
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• v.15 no.3
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• pp.499-531
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• 2008

Rural Traditional Theme Villages are one of the village-based businesses, which obtains excellent results. However, it also has brought negative results such as splits in locals due to income disparity, and ill-advised development which does not consider surrounding potential resources, etc. So, this study analyzes several problems of Rural Traditional Theme Villages, and proposes how Rural Traditional Theme Villages can be revitalized by benchmarking other successful cases. First, it is important to pursue differentiation of operating programs for Rural Traditional Theme Villages. Second, it is possible to give weight to elements which show efficiently rural atmosphere to enhance images of Rural Traditional Theme Villages. Third, expanding budget support and securing a new route for budget are definitely needed to cultivate self-growth capability of villages. Fourth, it is necessary to apply experts and facilities of local-based universities, cooperate with relevant organizations, and nurture local leaders by various means such as study in/visits to advanced regions at home and abroad and experts training. Localgovernment should be in charge of nurturing talented people. Fifth, it is necessary to reinvigorate rural economy by networking each Rural Traditional Theme Village, providing a wide range of information on diversified villages to people in cities, and promoting consumption. Moreover, securing immovable customers is important through networking city-rural exchange with city consumers and other organizations, and sisterhood relationship, membership businesses and events. As mentioned above, it is expected that Rural Traditional Theme Villages will be able to be developed continuously as a model for rural revitalization, which is stagnant, by expanding city-rural interchange.

• The Transactions of the Korean Institute of Electrical Engineers A
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• v.53 no.8
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• pp.472-476
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• 2004

Standby power is the electricity consumed in an electrical equipment when it is switched-off or not performing its main function. Due to the acceleration of digital electronics and home networking, standby power use tends to increase rapidly year by year. In this paper, standby power consumption in residential sector in Korea has been surveyed and reported for the first time. Totally 825 pieces of electrical equipments that consume standby power in 53 households were investigated. The average standby power per equipment and total standby power per household were 3.66W and 57.0W, respectively. Annual standby power consumption per household was estimated 306kWh; which means the standby power consumption in residential sector in Korea can be estimated 4.6TWh a year representing 1.67 percent of total electrical consumption (274TWh).

• Journal of Digital Contents Society
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• v.7 no.4
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• pp.301-308
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• 2006

There are some technologies such as USN, RFID, Home-network to advance the ubiquitous era. Those technologies embody Context-Awareness System. To Context-Awareness System is that human, objects and environment supply information with cable and wireless at real time. So private information, information privacy, a wide sense privacy will be faced on serious menace. In this article, I analyze threat of private information in Context-Awareness System under USN(ubiquitous Sensing Network) surroundings and present technology to protect private information. Each technology can apply subdivided protection province information privacy. I expect definition of information privacy, insight through technological presentation and total solution in this article.

• Korea Journal of Hospital Management
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• v.6 no.2
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• pp.173-201
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• 2001

This study purports to examine the current management and information technology related strategy of Korean hospitals and suggest the effective management strategy in the 21st century when is digital era. Specifically the study tries to analyze the changing trends of strategic orientation and investigate the general management and information technology strategy of Korean hospitals. Self-administered Questionnaires were distributed to 721 hospitals nationwide and finally 98 Questionnaires were analyzed for the study. The results of the study are as follows : 1) Half of the respondent hospitals reported that they have an analyzer orientation in 2000, whereas 19.4% were prospectors, reactors 16.4%, and defenders 14.3%. However, the respondent hospitals intended to have a prospector orientation in the future (2002), while 29.6% planned on being analyzers, 17.3% reactors, and 3.1% defenders. 2) Hospital services for improving patient satisfaction were the most common. strategy for the respondent hospitals, followed by cost containment, organizational restructuring, employee education, purchasing system change, specialization of clinical services, quality improvement of medical care, strengthening the networking with the stakeholders, public relations and marketing strategy, diversification, and installing the information system. However, the strategies of annual salary system, retrenchment of unprofitable services, merit payment based on performance were still not popular for the respondent hospitals. 3) As for the strategies related with information technology, most hospitals have not implemented actively, except for the establishment of home-pages, order communication systems, and insurance claims through electronic data interchange system. 4) There were significant differences in the level of strategy implementation in terms of the ownership, bed size, financial performance, and the top managers I knowledge of information technology. The larger bed size, the higher financial performance, the better knowledge of information technology the top managers have, the more strategies the respondent hospitals implemented. The managerial and political implications for Korean hospitals in digital era were also discussed.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.40 no.2
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• pp.385-389
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• 2015

If visible light communication is to be used against large background noise in indoor environment, low frequency noise should be avoided. To maintain the advantages of LED lighting while transmitting signals, LEDs should be dimmable and free from flickering effect. In this paper, the spectrum of transmission signal is shifted toward high frequency for this purpose. Specifically, we propose a subpulse-VPPM scheme, which can be designed using only digital components, and we implement a test-bed for performance measurement.

• Fashion & Textile Research Journal
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• v.14 no.4
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• pp.614-628
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• 2012

The purpose of this study was to analyze research trends and make suggestions regarding the future of information technology (IT) in the fashion industry. In this study, 437 papers written regarding IT fashion from five major journals published between 2000 and 2011 were examined. The research areas were then organized by subject and keyword, and divided into 16 high-context categories. Two IT fashion maps were constructed, one from a fashion consumer's perspective, and the other based on the fashion industry's supply chain. This study identified important trends in IT fashion such as: 3D scanners, 3D digital renderings of the human form, 3D digital garments, smart garments, mass customization, production automation, online shopping, home shopping, online communities, e-commerce, digital media, virtual reality, e-tail, the digital generation, E-CRM, and education. Data from body scans was collected and applied to production, and research on smart textiles was also carried out. As for IT fashion's service areas, the majority of the research focused on online shopping or online communication. Additionally, research done on avatars and cyber space, and studies on social networking services are shown. The results of this study indicated that a new field of research has opened and that current research has been developing. Also, this study showed what is needed to expand and strengthen IT fashion.

• Journal of The Institute of Information and Telecommunication Facilities Engineering
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• v.1 no.1
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• pp.6-25
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• 2002

In this paper, we have implemented UPnP Devices which emulate a Control Point, a Light Controller, and a Digital TV. The Control Point has been developed on Linux host system by using C language. The UPnP Devices emulating the Digital TV and Light Controller are running on embedded linux developer board. For the development of UPnP Devices, UPnP SDK API Vl.04 made by Intel Co. Ltd. has been ported on Assabet Linux Reference board to implement the UPnP protocol. After we analyze and design some services of Digital TV device, we have applied UPnP Device program to those devices. UPnP SDK vl .04 consists of APIs which support HTTP, SSDP, SOAP, GENA and XML DOM Level-1 that are cores of UPnP protocol. The C program written for the UPnP Control Point has been compiled and executed on Linux-based PC. The embedded system running on Embedded Linux OS has been connected all together through Ethernet which allows IP-based communications. Under this environment, the UPnP programs are being executed on each device. Control Point, when in operational mode, discovers UPnP Devices on the network and displays the device list on the consol. By selecting one of the functionalities of the device services that are displayed on the Control Point, the controllability has been accomplished. The experiment that we performed in this thesis have revealed that the Control Point and UPnP Devices have supported the protocols including SSDP, SOAP, GENA, and DHCP.