• KSII Transactions on Internet and Information Systems (TIIS)
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• 제10권1호
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• pp.38-57
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• 2016

Service discovery is one of the major challenges in cloud computing environment with a large number of service providers and heterogeneous services. Non-uniform naming conventions, varied types and features of services make cloud service discovery a grueling problem. With the proliferation of cloud services, it has been laborious to find services, especially from Internet-based service repositories. To address this issue, services are crawled and clustered according to their similarity. The clustered services are maintained as a catalogue in which the data published on the cloud provider's website are stored in a standard format. As there is no standard specification and a description language for cloud services, new efficient and intelligent mechanisms to discover cloud services are strongly required and desired. This paper also proposes a key-value representation to describe cloud services in a formal way and to facilitate matching between offered services and demand. Since naïve users prefer to have a query in natural language, semantic approaches are used to close the gap between the ambiguous user requirements and the service specifications. Experimental evaluation measured in terms of precision and recall of retrieved services shows that the proposed approach outperforms existing methods.

• 한국중재학회지:중재연구
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• 제22권2호
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• pp.79-101
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• 2012

In 2010, the United Nations Commission on International Trade Law (UNCITRAL) initiated work on the settlement of disputes in international e-commerce through online dispute resolution (ODR). The basic goal is to use ODR to resolve disputes with low value but high volume in international e-commerce. The background is that consumers have no way to solve their legal problems in this area. An ODR system is intended to create a new way to enforce their rights. However, the legal situations of the countries in the e-commerce sector, particularly in consumer protection, are very diverse. Thus, no reasonable model for conflict resolution is available. Some countries consider this as public policy and want absolute protection of their consumers. Other countries want to encourage freer e-commerce trading. This diversity of consumer protection policy is an obstacle to ODR. However, sooner or later, reaching an agreement is feasible because each representative is making a reasonable effort to reach the goal.

• 한국정보통신학회논문지
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• 제14권1호
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• pp.156-166
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• 2010

인터넷과 IP 네트워크 기술의 발전은 IPTV, VoIP와 같은 IP Network을 통한 융합화된 새로운 서비스형태를 창출하게 되었다. 특히 차세대 IP분야인 IPv6의 발전은 인터넷 사용자들의 증가로 인한 IP 주소 고갈의 문제를 해결해 줄 것이며, 보안, QoS 및 대용량의 대역폭등 높은 수준의 서비스 품질을 요구하는 IPTV Network에서는 그 중요성 매우 높아지고 있다. 본 논문에서는 IPv6 네트워크 환경 하에서 다양한 라우팅 프로토콜들에 대하여, 사용자 관점에서의 객관적 화질 평가방법인 PSNR을 이용하여 IPv6 네트워크에서 최적의 영상 품질을 서비스 할수 있는 기준을 제시하고자 한다.

• 한국보건간호학회지
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• 제31권1호
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• pp.19-33
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• 2017

Purpose: This study was conducted to explore the meaning and contents of high-quality aged care facilities and provide basic data for evaluation of service quality in such facilities. Methods: The focus group interviews and participants consisted of two user groups, for a total of 16 family caregivers of the elderly living in facilities and four service provider groups, for a total of 26 chief managers and caregivers working in aged care facilities. All interviews were recorded and transcribed as they occurred. Content analysis was used and debriefing notes were referred to in order to analyze the data. Results: Four themes of a high-quality aged care facility emerged from the analysis; 1) a place to rest for comfortable later years; 2) systematic value-based management; 3) providing professional care; 4) comprehensive service provision in response to diverse needs. Conclusion: The findings of the study showed the importance of client centered care and ethical mindset of providers, which had not been included in the existing quality evaluation programs. Based on these results, medical treatments, end-of-life care and more comprehensive and extended services including family care need to be provided in facilities to ensure good quality aged care.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제9권6호
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• pp.2050-2077
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• 2015

One of the major issues in emerging cloud management system needs the efficient service level agreement negotiation framework, with an optimal negotiation strategy. Most researchers focus mainly on the atomic service negotiation model, with the assistance of the Agent Controller in the broker part to reduce the total negotiation time, and communication overhead to some extent. This research focuses mainly on composite service negotiation, to further minimize both the total negotiation time and communication overhead through the pre-request optimization of broker strategy. The main objective of this research work is to introduce an Automated Dynamic Service Level Agreement Negotiation Framework (ADSLANF), which consists of an Intelligent Third-party Broker for composite service negotiation between the consumer and the service provider. A broker consists of an Intelligent Third-party Broker Agent, Agent Controller and Additional Agent Controller for managing and controlling its negotiation strategy. The Intelligent third-party broker agent manages the composite service by assigning its atomic services to multiple Agent Controllers. Using the Additional Agent Controllers, the Agent Controllers manage the concurrent negotiation with multiple service providers. In this process, the total negotiation time value is reduced partially. Further, the negotiation strategy is optimized in two stages, viz., Classified Similarity Matching (CSM) approach, and the Truncated Negotiation Group Gale Shapely Stable Matching (TNGGSSM) approach, to minimize the communication overhead.

• 통상정보연구
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• 제12권4호
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• pp.363-382
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• 2010

It should be unthinkable to not provide water at survival of any living things. Water is too a basic element for development for a country. Currently, the global market of mineral water is growing rapidly. This study, I conceptualized mineral water as bottled water. In particularly, bottled water has seen huge global growth for the last few years. The annual growth rate of the market in the period 2005-2009 was 5.9%. Following a surge in obesity and subsequent health and wellness trends, many consumers are switching from sugary soft drinks to healthier alternatives. Therefore, the global bottled water market is one area which has big potential for growth, but price competition is getting intensified among multi-national and domestic firms. Korean providers too are faced with strong competition in growing domestic market. The bottled water market has presence of multinational provider like Nestle, Danone and Coca-Cola, which collectively account for 35.1% of the world market share in 2009. On the basis of a market orientation approach, this article looks at changing environments in the world mineral water industry and attempts to describe foreign market entry strategy of the Korean mineral water industry. The market orientation provides strong norms for learning from customers and competitors, is instrumental in creating a superior value for buyers, innovating successfully, and generating excellent firm performance. So firms should consider a strategic planning in basis on market orientation before they enter foreign markets. Some discussions were made about managerial implications for Korean bottled water providers.

• 구강회복응용과학지
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• 제22권1호
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• pp.29-36
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• 2006

As migraine pain represents a substantial personal and social burden worldwide, there has been a great deal of effort in developing a screening instrument for migraine. Lipton et al(2003) developed and validated the ID Migraine questionnaire, which is a self-administered screener for migraine in primary care, and it is brief and easy to use for a primary care provider. The aim of this study was to determine if the ID Migraine questionnaire could be applied successfully to assess the headache patients with temporomandibular disorders(TMD) and orofacial pain. This study found that nausea, photophobia and headache-related disability had the highest individual sensitivities and specificities, and the performance of the three-item screener was equivalent to that reported in a previous study. Although the sensitivity of the three-item screener in this study (0.58) was lower than in a previous study (0.81), the specificity (0.98) was higher and the positive predictive value was 93.9%. This suggest that the ID Migraine questionnaire is very efficient in this setting. In conclusion, the ID Migraine questionnaire, which is a three-item screener consisting of nausea, photophobia and headache-related disability, is effective as a self-administered report for detecting migraine headaches in patients with temporomandibular disorders(TMD) and orofacial pain.

• 한국산업정보학회논문지
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• 제8권2호
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• pp.62-71
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• 2003

최근 기업들은 생산성 향상과 새로운 기회의 창출이라는 관점에서 e-Business 기업으로의 변환을 시도하고 있다. e-Business 기업으로의 변환에 있어서 솔루션의 도입은 거대한 자본이 소요되어 특히 중견/중소기업으로서는 엄두도 내질 못하는 실정이다. 이로 인하여 IT 아웃소싱의 극대화된 형태로 대두된 ASP를 이용하여 임대하는 성향이 나타나고 있는데, ASP는 웹을 기반으로 하여 어플리케이션을 공급하는 형태로 로컬 ERP를 도입하는 것과 비교해 볼 때 초기투자에 따른 자본절감효과를 누릴 수 있는 등의 여러 가지 장점을 지니고 있으므로 e-Business구축에 적합한 형태라 볼 수 있다. 하지만 ASP의 활성화는 매우 더디게 진행되고 있으며 중견/중소기업들의 ASP에 대한 인식부족은 이들 더욱 지체시키고 있다. 따라서 본 논문은 ASP 방식을 이용한 ERP구축 사례를 연구하고 명확한 ASP 방식의 ERP 도입을 위해 필요한 요소들을 살펴보고자 한다.

• 한국산업정보학회논문지
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• 제12권4호
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• pp.153-163
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• 2007

IT 아웃소싱에 관한 현재까지의 연구에서는 IT 아웃소싱의 계약관계, 서비스 수준 계약관계(SLA), 파트너쉽 대한 연구의 성과는 많이 있다. 또, 주로 대기업과 공기업들의 아웃소싱전략과 성공요인분석 등의 연구가 주류를 이루고 있고 성과측정 또는 만족도 측정모델에 관련한 연구였다. 그러나 기업들은 IT 아웃소싱 수행업체 선정 시 많은 고민을 하고 있는 상태이다. 본 연구는 현재까지 연구된 모든 분야의 IT 아웃소싱 성공 요인들을 분석하고 AHP기법을 통해 요인과 요인변수들을 가중치 별로 도출하였고 요인과 요인변수들의 중요도 가중치를 계산 해내어 IT 아웃소싱 수행업체를 평가할 수 있는 방법론은 제시하였다.

• 정보처리학회논문지C
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• 제13C권1호
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• pp.35-44
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• 2006

현재의 저작권 보호 기술 개발은 디지털 콘텐츠의 최종 소비자인 구매자단을 대상으로 해서 주로 이루어지고 있다. 그러나. 불법복제는 최종 소비자인 구매자뿐만 아니라 디지털 콘텐츠의 유통 가치사슬 중간 단계인 공급자와 배포자단에서도 항상 발생할 수 있다. 이에 본 논문에서는 창작자가 콘텐츠를 배포한 시점부터 구매자가 소비하는 시점까지 모든 유통 가치사슬에서 콘텐츠의 저작권 보호를 지원하는 End-to-end 디지털 저작권 보호 시스템을 설계하고 구현한다 제안하는 시스템은 창작자, 공급자, 배포자 단에서도 구매자 단에서와 같이 콘텐츠 저작권을 안전하게 관리하고 콘텐츠의 불법 사용을 방지할 수 있는 기술적 장치를 제공함으로써 각 유통주체의 저작권을 보호하고 소유권 침해를 방지할 수 있는 환경을 제공한다.