• KDI Journal of Economic Policy
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• 제33권1호
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• pp.73-91
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• 2011

본 연구에서는 개인이 건강검진을 통해 혈압수치 등과 같은 자신의 현재 심혈관 계통의 건강 상태에 대하여 잘 알고 있을수록, 건강검진을 받지 않은 사람에 비해 자신의 건강을 위하여 운동과 같은 건강증진행위에 더 많은 투자를 하려 한다는 것을 실증적으로 분석하고자 한다. 이를 위하여 본 논문에서는 2001년 국민건강영양조사 자료를 이용하여 bivariate probit 모델의 구조적 계량경제모형을 구축하고, 개인이 가입한 전 국민 의료보험의 유형, 즉 직장 혹은 지역 의료보험 가입 여부를 도구변수로 하여 건강검진 수검 여부에 대한 개인별 의사결정과 관련된 내생성 문제를 통제하였다. 추정 결과, 개인이 건강검진을 통해서 자신의 건강 상태에 대해 더 많은 정보를 보유할수록 건강증진을 위한 투자를 더욱 더 많이 한다는 것이 통계적으로 유의하게 나타났다. 보건정책적 관점에서 본 논문의 실증 결과는 현재 무상으로 이루어지고 있는 국가건강 검진서비스 제공 정책의 정책적 효과를 입증하기 위해 사용될 수 있다고 판단되어 동 사업 수행의 정당성 확보에 활용될 수 있을 것으로 사료된다.

• 보건교육건강증진학회지
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• 제20권1호
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• pp.61-76
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• 2003

As people get broader access to health information through the internet, there is a greater need for measure to maximize the social advantages of the internet and to minimize negative side-effects. With this concern, this paper classifies internet health information services sites into : on-line supply of health information, on-line consultation, on-line diagnosis, and on-line sales. As well this paper analyzes domestic laws supporting and/or regulating these services. The efficient provision of internet health services requires comprehensive laws on individual privacy protection, prevention and handling of medical accidents, an electronic prescription form for internet diagnosis, electronic signing, payment for medical expenses, qualifications for internet medical practitioners. Additional laws are required to establish internet pharmacies and internet health goods stores. These new laws can be prepared either separately or through revision of existing laws governing medical practice, pharmacies, and public health promotion. However, as the legal control by the government on cyber processes and entities has a fairly minimal effect, consumers should be encouraged to improve their own capacity for wisely using internet health services and health-service providers should be encouraged to promote voluntary supervision and control of their own services and practices.

• 융합보안논문지
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• 제8권4호
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• pp.167-179
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• 2008

유비쿼터스 기술이 발달하면서 모바일 기기를 통해 다양한 콘텐츠를 사용자에게 적합한 정보만을 제공하기 위한 연구가 활발하게 진행되고 있다. 그러나 모바일 기기의 작은 사용자 인터페이스로 인해 정보제공에 한계가 있다. 본 논문에서는 이런 문제점을 해결하고 모바일 환경에 적합한 지능형 에이전트 모델과, 각 개인 사용자들이 관심 있는 일자리 정보를 능동적으로 제공할 수 있는 시스템을 제안한다. 사용자 행동패턴을 감시하는 Personalization Engine과, 모바일 기기에 정보제공을 위한 Learning Algorithm으로 구성되었다. 조사를 통해 성별, 나이, 학력에 따라 선호하는 직업 항목이 다른 것을 알았으며, 지역은 직업을 검색 할 때 많은 영향을 주는 것으로 나타났다.

• 대한영양사협회학술지
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• 제6권1호
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• pp.26-32
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• 2000

The purposes of this study were to assess the importance and performance level of nutrition service in views of industrial employees and to explore the ways to improve the nutrition service quality. A survey of industrial foodservice operations located in Korea was undertaken and detailed information was collected from each, including surveys of 994 industrial employees. Statistical data was analysed by SAS PC 6.04 for descriptive analysis, t-test, and analysis of variance. The whole industrial employees assessed the importance and performance of the dieticians' role on nutrition service as '4.03' and '3.32' out of 5 respectively, which suggests that the industrial nutrition service needs to be improved. The variables which received higher scores than the average mean were safe meal provision, sanitation management and equipment & facilities management, whereas the score of individual nutrition counselling was low compared to other variables of nutrition service. The groups who scored low performance were characterized by labor work, experience with less than 10 years, single, aged below 29 years old, and female.

• Journal of Communications and Networks
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• 제7권4호
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• pp.408-416
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• 2005

Quality of service (QoS) provision is an important and indispensable function for multi-service wireless networks. In this paper, we present a new scheduling/admission control frame­work, including an efficient rate-guaranteed opportunistic scheduling (ROS) scheme and a coordinated admission control (ROS­CAC) policy to support statistic QoS guarantee in multi-service wireless networks. Based on our proposed mathematical model, we derive the probability distribution function (PDF) of queue length under ROS and deduce the packet loss rate (PLR) for individual flows. The new admission control policy makes admission decision for a new incoming flow to ensure that the PLR requirements of all flows (including the new flow) are satisfied. The numerical results based on ns-2 simulations demonstrate the effectiveness of the new joint packet scheduling/admission control framework.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.1201-1208
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• 2008

Ubiquotuous technology should be adopted in railroad business to provide passenger's security and convenience. In this project, IT and smart sensor technologies are reviewed, benchmarked, designed, and implemented. The target system is the next generation high speed train to be developed and operated in Korea with the maximum speed of 400km/h. Wireless sensor network with smart sensors is implemented around a train car. PC-like IT terminal will be designed and implemented so an individual passenger can use it to do information retrieval through the Internet, personal data processing, the e-learning, shopping on the railroad, and so on. These provision will give comfort, convenience, and safety of a passenger during his/her trip.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제10권3호
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• pp.1362-1376
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• 2016

A cloud computing system can be characterized by the provision of resources in the form of services to third parties on a leased, usage-based basis, as well as the private infrastructures maintained and utilized by individual organizations. To attain the desired reliability and energy efficiency in a cloud data center, trade-offs need to be carried out between system performance and power consumption. Resolving these conflicting goals is often the major challenge encountered in the design of optimization strategies for cloud data centers. The work presented in this paper is directed towards the development of an Energy-efficient and Performance-aware Cloud System equipped with strategies for dynamic switching of optimization approach. Moreover, a platform is also provided for the deployment of a Wind Farm CMS (Condition Monitoring System) which allows ubiquitous access. Due to the geographically-dispersed nature of wind farms, the CMS can take advantage of the cloud's highly scalable architecture in order to keep a reliable and efficient operation capable of handling multiple simultaneous users and huge amount of monitoring data. Using the proposed cloud architecture, a Wind Farm CMS is deployed in a virtual platform to monitor and evaluate the aging conditions of the turbine's major components in concurrent, yet isolated working environments.

• 한국경영과학회지
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• 제38권3호
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• pp.51-70
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• 2013

This paper develops a model to predict the adoption and level of usage of network technology in a two-level supply chain with buyer-supplier relationships. A firm's adoption of a new technology depends not only on its own beliefs of the new technology's costs and benefits, but also on the adoption decisions of other firms in the supply chain. A model first analyzes an individual supplier's decision about a new technology adoption considering with multiple suppliers and buyers. Individual suppliers' decisions are aggregated with a population model to project how new technology diffuses across the supply chain and examine the pattern of diffusion process. This study found that as more firms adopt in initial periods, the total amount of information to the potential adopters in the population increases, and then the number of firms persuaded by the information increases as the process moves up the distribution of adoption process. We consider three factors influencing the diffusion speed of the new technology in a supply chain network : mean benefits, cost sharing, and information provision. This study examines how such factors affect the reduction of threshold levels, which implies that reductions in threshold levels have an aggregate effect by accelerating the rate of adoption. In particular, we explore relationship factors available in practice in a buyer-supplier relationship and numerically examines how these relationship factors contribute to increase the diffusion speed of the technology in a two-level supply chain.

• 대한산업공학회지
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• 제39권2호
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• pp.119-128
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• 2013

Most internet users utilize internet portal search engines, such as Naver, Daum and Google nowadays. But since the results of internet portal search engines are based on universal criteria (e.g. search frequency by region or country), they do not consider personal interests. Namely, current search engines do not provide exact search results for homonym or polysemy because they try to serve universal users. In order to solve this problem, this research determines keyword importance and weight value for each individual search characteristics by collecting and analyzing customized keyword at external database. The customized keyword weight values are integrated with search engine results (e.g. PageRank), and the search ranks are rearranged. Using 50 web pages of Goolge search results for experiment and 6 web pages for customized keyword collection, the new customized search results are proved to be 90% match. Our personalization approach is not the way that users enter preference directly, but the way that system automatically collects and analyzes personal information and then reflects them for customized search results.

• 정보관리학회지
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• 제32권3호
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• pp.413-432
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• 2015

본 연구는 한국복제전송저작권협회와 체결한 협정서를 기반으로 운영되고 있는 KERIS와 KISTI의 원문복사서비스 운영상의 문제점을 저작권을 중심으로 분석하였다. 분석 결과, 협정서 적용시 원문복사서비스가 가능한 대상기관 및 자료유형의 제한, 현행 전자배송서비스가 도서관 사서 간에만 이루어지는 한계, 개인 신청자 대상 비상호대차형 원문복사서비스의 제한적 가능의 문제점이 파악되었다. 이러한 문제점을 해결하기 위하여 본 연구는 저작권법에 상호대차형 원문복사서비스에 대한 근거 규정 도입과 권위 있는 표준 가이드라인의 개발, 최종 이용자가 원문파일을 출력할 수 있도록 하되 저작권 침해방지를 위한 기술적 조치를 도서관이 의무적으로 설치할 것, 개인 신청자를 위한 저작권료 지불 원문복사서비스 모델 도입을 제안하였다.