• Information and Communications Magazine
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• v.32 no.4
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• pp.10-15
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• 2015

본고에서는 u-Office 서비스를 실현하기 위하여 이동 단말 기기로부터 수신한 사용자의 시간 및 위치 이동 정보를 이용해서 사용자에게 유용한 서비스를 제공하는 데 필요한 사용자 맞춤형 서비스 제공 통합 프레임워크 및 추론 기술 알고리즘에 대해 기술하고자 한다. 사용자 맞춤형 서비스제공 통합 프레임워크는 사용자 이동단말기 및 시간 및 이동 데이터를 저장하는 AP, AP의 데이터를 수집하는 데이터베이스, 사용자 이동 단말 어플리케이션 등으로 구성되어있으며, 사용자의 시간 및 위치 정보를 학습하여 이동 경로를 예측하고 유용한 서비스를 제공하기 위해 사용된 기계학습 기반 추론 알고리즘에 대하여 알아본다. u-Office 서비스를 실현하기 위하여 실제로 캠퍼스 및 교실범위로 구현한 사용자 패턴기반 맞춤형 서비스 프레임워크에 대해 알아보고 제공 가능한 서비스에 대하여 논의한다.

• Journal of Intelligence and Information Systems
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• v.14 no.2
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• pp.21-44
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• 2008

Recently, feasible services in ubiquitous computing environment are commonly based on context -aware computing. With the concept of context-awareness we can imagine more effective way to measure human being's daily stress and provide anti-stress services. Our study introduces logical and methodological approach to manage the stress through the development of stress index. From the practical perspectives, we also designed a business model for u-SMC, which is a profitable organization specialized in providing stress measurement services and personalized anti-stress services by utilizing the stress index model.

• Journal of the Korea Society of Computer and Information
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• v.17 no.8
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• pp.81-90
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• 2012

For digital TV, the recommendation of u-health personalized service of semantic environment should be done after evaluating individual physical condition, illness and health condition. The existing recommendation method of u-health personalized service of semantic environment had low user satisfaction because its recommendation was dependent on ontology for analyzing significance. We propose the personalized service recommendation method based on Naive Bayesian Classifier for u-health service of semantic environment in digital TV. In accordance with the proposed method, the condition data is inferred by using ontology, and the transaction is saved. By applying naive bayesian classifier that uses preference information, the service is provided after inferring based on user preference information and transaction formed from ontology. The service inferred based on naive bayesian classifier shows higher precision and recall ratio of the contents recommendation rather than the existing method.

• Journal of the Korea Society of Computer and Information
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• v.17 no.7
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• pp.147-154
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• 2012

The evolution of u-Gov will play a big impact due to the development of information and communication technology. The evolution plays as a critical mean for the government innovation which pursues the value of new administration. In this paper, through an analysis of the difference between e-Gov and u-Gov, I suggested the composition of prototype system of u-public transit application services which can be applied to u-Gov. I also studied the method for removing unstable elements of e-Gov which may occur when the prototype is implemented and the implications of the its UT-based policy for responding to u-public transit.

• Journal of Korea Spatial Information System Society
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• v.11 no.1
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• pp.25-34
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• 2009

As the trend of the Web is changing toward 'Web 2.0', OpenAPIs, Web 2.0's core technology, are used in many web sites. In the past, services in websites are used in its own, but recently it is possible to use services in other websites by using OpenAPI. In u-GIS many vendors also can provide combined service by using OpenAPI. There are already lots of OpenAPIs and the numer of OpenAPI increases very fast. So it is difficult to find a service that we want to use, and also difficult to find services for mashup. In this paper, we developed retrieval methods for OpenAPIs and mashup capable services based on similarity. First we define the integrated service information model to cover various protocols of OpenAPI, then developed a retrieval methods based on it. By implementing system according these methods by using relational database and JSP, we prove that the system can provide an ranked result sets based on similarity, OpenAPI's integration retrieval results and mashup capable service retrieval results.

• The Journal of the Korea Contents Association
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• v.9 no.1
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• pp.312-322
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• 2009

Linking between a virtual space and a physical space, ubiquitous computing is expected to create new business value. So far, however, there is no broadly accepted methodology to develop the services based on ubiquitous computing technology. Hence, this study aims to seek a systematic methodology for developing new services based on the concept of business model and to apply this in the areas of waste management practices. In addition, based on the evaluation of u-business services in waste management domain, killer services were selected, and then linked with the latest ubiquitous computing technologies. The results of this study are to be applicable to an environment friendly ubiquitous service model of u-City.

• The Korean Society of Law and Medicine
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• v.10 no.1
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• pp.171-211
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• 2009

Because Korea has the excellent informational technology, it was expected to be able to improve the accessibility to healthcare and compete with other nations in excellence through u-Healthcare. But we can't complete the excellent u-Healthcare because of the law to be able to use only the tele-counselling between doctor to doctor or doctor to nurse. First of all, we must complete the law to be able to use the improved u-Health containing of telemedicine between doctor to patient. Though other factors, the procurement of safe IT, the credibility to healthcare service provider containing of nutritionist and occupational therapist etc. are prepared for erecting u-Healthcare, we can get the final and decisive u-Health policy only by means of Law for supporting u-Healthcare's Activation. The important sections of Law for supporting u-Healthcare's Activation are as follows. Sec. 4 The Minister for Health, Welfare and Family Affairs and the dean of associated administrative division have to erect the combined plan for u-Healthcare's Activation. Sec. 11 Government and local autonomous entity can support the facility and equipment to be necessitated for using u-Healthcare to improve the medical accessibility of person in the region with poor medicine. Sec. 13 Doctor can support other doctor's medical action through IT and if there are not medical risk, doctor can give medical act directly to the special patients. Sec. 21 If pharmaceuticals is necessitated in u-Healthcare, remote doctor has to send the patient the electronic prescription and the pharmaceutist to receive the electronic prescription has to delivery the pharmaceuticals in accordance with patient's demand.

• Information and Communications Magazine
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• v.24 no.3
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• pp.53-61
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• 2007

BcN (Broadband convergence Network, 광대역 통합망)은 다양한 접속망과 서로다른 단말 디바이스를 통해 통합된 서비스를 제공받을 수 있도록 하는 네트워크 인프라이다. BcN 서비스 중에서 초기부터 개발되었고, 대표적인 서비스는 영상통화와 같은 멀티미디어 통신서비스이다. 본 고에서는 BcN 융합망 환경에서 통신응용서비스를 중심으로 서비스 제공에 필요한 기술적 고려사항들을 논의하고, 단계적 융합서비스 제공방안을 기술하였다.

• Journal of Service Research and Studies
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• v.7 no.4
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• pp.39-50
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• 2017

As a comparative study on the value of design concept between service provider (Developer) and service receiver (Customer) group, the aims of this study was to present a service model focused on Continuous positive airway pressure (CPAP) based on U-health care and user environment. Double Diamond-based methods led to a case study that conducted jointly by the department of otolaryngology in U hospital, Ulsan. By targeted on Sleep Apnea patients from the stage of diagnosis to CPAP treatment, variety of meaningful experiences have been extracted and classified into several types of customers. In the final analysis of the 13 service scenario models, Kano Satisfaction and Potential Customer Satisfaction Improvement Index (PCSI) were conducted with the customers, yet Score Model and Concept Position were evaluated by the service provider groups who engaged in development services. The results of this study showed that 7 items in the total of 12 items reached a consensus of viewpoint on value between service receiver and service provider, which the attributes of the service model are based on user environment. Whereas the other 5 items showed the divergent viewpoint on value which included the attributes of U-healthcare service model.

• Review of KIISC
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• v.17 no.1
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• pp.57-62
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• 2007

본 논문에서는 바이오인식 정보 기술(얼굴, 정맥, 지문, 홍채)을 이용하여 신뢰성 있는 Ubiquitous-Healthcare(U-HC) 서비스를 지원하는 사용자 인종 메커니즘과 암호화 기법을 제안한다. U-HC 서비스에 태동 및 특징, 국내외 산업현황, 기대효과 등을 통해 U-HC서비스의 필요성을 강조하고 있다. 하지만 지능화 및 고도화된 기술을 통하여 개인 정보를 악의적인 의도로 유출하여 개인에게 육체적 정신적 경제적 피해를 주고 있다. 바이오인식은 이러한 피해를 막고 보안 및 프라이버시 측면의 취약점 및 공격들을 분석하여 효율적으로 방어함으로서 개인의 의료정보 및 바이오 정보를 보호하기 위한 대응책인 새로운 사용자 인증과 암호화 기법이다. 사용자 인증 기법은 다수의 바이오 정보들을 인증 시에 무작위로 선택하여 2개 이상 입력하는 방안이며 암호화 기법은 사용자 스토리(Story)식 암호화(Encryption) 기법을 제안한다. 이러한 방법론을 통하여 효율적이며 신뢰 성 있는 U-HC 서비스를 보장하고자 한다.