• Journal of Communications and Networks
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• 제18권6호
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• pp.962-974
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• 2016

We are concerned with whether a vertically integrated broadband and content provider can unreasonably advantage itself over competing content providers, either by selling quality-of-service (QoS) to content providers at unreasonably high prices, or by refusing to provide access to QoS to competing content. We address this question by modeling the competition between one such vertically integrated provider and one over-the-top (OTT) content provider. The broadband provider decides whether to deploy QoS, and if so it also determines the QoS price if sold to either the OTT content provider or directly to users. We analytically determine when the broadband provider will sell QoS and when the OTT content provider or users will purchase QoS. We characterize the optimal QoS and video service prices. The Internet service provider (ISP)'s market share increases with the difference in the value of the two video services and decreases with the difference in the corresponding costs. Numerical results illustrate the effect of QoS price on content price, the variation of prices and profit with QoS price, and the variation of prices and market shares with the benefit of QoS. The ISP may sell QoS to users at a lower price than when QoS is sold to the OTT provider.

• 한국정보통신설비학회:학술대회논문집
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• 한국정보통신설비학회 2006년도 하계학술대회
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• pp.73-76
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• 2006

International Roaming is a kind of telecommunication service that enables subscribers use the same mobile number when they go abroad and access other service provider's network. International roaming call is made through three network parts-home (original service provider) network, intermediate network, and local (overseas service provider) network. It is not possible to monitor every section of whole roaming service network because service providers do not provide their network management information to other service providers. The limitation causes harsh problem when a service anomaly arises and operators have to confirm the reason of failure. To solve this problem, we propose a scheme that deduces roaming service status of each overseas service provider using internal network management information. SK telecom implemented a international roaming service management system based on the scheme using performance measurement of signaling points, roaming service nodes, and charging data from existing network management systems.

• 한국임상보건과학회지
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• 제1권3호
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• pp.21-31
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• 2013

Purpose. The purpose of this study was to explore the meaning of BLS-Provider Certification Course experienced by nursing students. Methods. The phenomenological method developed by Giorgi was used for this study. The participants were 7 students who had experienced BLS-Provider Certification Course. The data were collected between February, 2013 and May, 2013 by face to face interview. The interview was recorded and then transcribed. Results. The constituents associated with the meaning of the Nursing students's experiences on BLS-Provider Certification Course were as followings 'To obtain the information', 'Complicated preparation process', 'Unfamiliar education', 'Fear on the BLS ', 'Satisfaction after getting of BLS-Provider Certification ' Conclusions. The result of this study may contribute to a deeper understanding of the meaning of the BLS-Provider Certification Course experienced by nursing students. The highlights of this study are that, although the students had much inconvenience on the preparation process of BLS-P and fear on the BLS-Provider Certification Course, they were satisfied much after getting the BLS-Provider Certificate. It can give the better quality of BLS-Provider Certification Course if these results are provided in the program.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제7권12호
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• pp.3135-3148
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• 2013

The popularization of streaming networks and mobile devices brings a new kind of network called mobile peer-assisted streaming network. In this network, service provider not only offers downloading services, but also pre-pushes resources to users for caching. Users can download their demanded resources while working as servers for uploading the cached data. Also the mobile characteristic makes high package losing probability in this network. So we study how the service provider pre-pushes or the user downloads resources efficiently and effectively while considering the package losing in this paper. We build utility models for service provider and user, and solve the models using Bellman's theory to achieve Nash Equilibrium which shows the service provider's optimal pre-pushing speed and user's optimal downloading speed. The numerical simulation demonstrates the efficiency and effectiveness of our proposed pre-pushing and downloading scheme by comparing to the traditional scheme.

• Journal of Information Processing Systems
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• 제6권2호
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• pp.185-196
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• 2010

This paper proposes a personal information protection model that allows a user to regulate his or her own personal information and privacy protection policies to receive services provided by a service provider without having to reveal personal information in a way that the user is opposed to. When the user needs to receive a service that requires personal information, the user will only reveal personal information that they find acceptable and for uses that they agree with. Users receive desired services from the service provider only when there is agreement between the user's and the service provider's security policies. Moreover, the proposed model utilizes a mobile agent that is transmitted from the user's personal space, providing the user with complete control over their privacy protection. In addition, the mobile agent is itself a self-destructing program that eliminates the possibility of personal information being leaked. The mobile agent described in this paper allows users to truly control access to their personal information.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2002년도 봄 학술발표논문집 Vol.29 No.1 (B)
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• pp.169-171
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• 2002

MIRAGE는 XML을 기반으로 하는 가상문서라는 개념을 도입하여 인터넷 상의 정보 공유를 가능하게 하여 새로운 지식을 생성할 수 있도록 한 디지털도서관 시스템이다. OAI는 컨텐츠에 대한 메타데이터를 이용해서 디지털도서관 안에 있는 정보를 상호이용하기 위한 프로토콜이다. 본 논문에서는 MIRAGE에 OAI 지원 기능을 첨가하여 MIRAGE 시스템에 의해 만들어진 가상문서에 대한 메타데이터를 제공하는 data provider를 구현하여 다른 디지털도서관과 더불어 정보를 상호이용할 수 있도록 하였다. 또한 원문에 대한 접근을 원하는 사용자를 위해서 메타데이터의 원문에 직접 접근할 수 있도록 하였다.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2001년도 춘계종합학술대회
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• pp.575-578
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• 2001

전화번호이동성이란 전화서비스 가입자가 전화망 사업자, 지역, 서비스의 종류를 변경하여도 종전에 사용하던 전화번호를 변경하지 않고 그대로 사용할 수 있는 것을 뜻한다. 새로운 통신사업자가 계속 등장함에 따라 국가적으로 이들의 공정한 경쟁을 유도하는 정책이 필요하게 되었으며 전화번호 이동성의 제공은 후발 통신사업자가 선발 통신사업자와 공정한 경쟁을 할 수 있는 토대를 만드는 것으로 인식되면서 국내에서도 전화번호이동성을 제공하기 위한 법률이 만들어지고 전 사업자가 동의할 수 있는 전화번호이동성을 제공하기 위한 표준이 필요하게 되었다. 이를 위하여 번호이동성 구현을 위한 규격을 개발하였으며, 번호이동성 구현을 위한 규격에는 호처리구조, 망구조 요구사항 등이 있으며 본 논문에서는 상기와 같은 규격에 관하여 다룬다.

• 정보처리학회논문지C
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• 제18C권6호
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• pp.389-396
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• 2011

최근 들어 현재의 인터넷에서 널리 사용되고 있는 서비스 제공자 중심적인(service provider-centric) 고립형(isolated) 인증 모델의 사용자 편의성 부족, 고비용 구조, 그리고 프라이버시 보호 어려움 등의 문제를 해결하기 위해 단일 사인온(single sign-on) 기반의 공유 인증에 대한 연구가 활발하게 진행되어 왔다. 인증 제공자(authentication provider)의 인증 결과가 다수의 인터넷 서비스 제공자(service provider)에 의해 공유되는 공유 인증(shared authentication) 모델이 실제 인터넷 환경에 적용되기 위해서는 사용자, 서비스 제공자, 그리고 인증 제공자간의 인증 보증 수준(level of authentication assurance)과 인증 정보 보호 수준(level of authentication information protection)에 대한 신뢰가 매우 중요하다. 본 논문은 사용자 중심적인(user-centric) 동작과 개방형 신뢰 제공자 네트워크(trust provider network)와 결합된 신뢰적이고 프라이버시 보호가 가능한 공유 인증 프로토콜에 대한 프레임워크를 제시한다. 제안된 공유 인증 프로토콜 프레임워크는 상호동작 가능한 개방형의 신뢰적인 인증 서비스를 제공함으로써 기존 공유 인증 연구들과 차별화된다.

• 한국병원경영학회지
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• 제8권2호
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• pp.111-129
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• 2003

This study discusses the direction of legislation to strengthen the legal protection of medical records privacy in information age. The legislation trends on privacy protection of medical records in European Union and United States are analysed and the current law and regulation of Korea on medical records are compared. The issues discussed include the ownership of medical records, the patient's right of access to medical records, medical information publication for other than treatment or insurance processing use, confidentiality responsibility of provider organizations, medical information management in provider organizations, penalty for the unlawful use of patient information. This study concludes that the patients' right on medical record and provider organization's responsibility in processing patient information should be strengthened in order to protect patients' privacy and to conform to the international standard on medical record protection in the information age.

• Journal of Information Technology Applications and Management
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• 제20권3_spc호
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• pp.201-217
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• 2013

This paper analyzes the effect of network neutrality regulation on social welfare using the two-sided market under the network congestion. This paper deals with zero price rule regulation which means the price regulation on the side of content. The results are as follows : First, under the monopoly platform, internet use price, contents price, and the number of internet user and content provider are all decreasing as the network congestion increases. Second, under the monopoly platform internet use price, contents price, and the number of internet user and content provider are all increasing as the network capacity increases. Third, the price of internet use and contents internet use which maximize social welfare are increasing and the number of internet user and content provider are decreasing as the network congestion increases. Fourth, optimal network capacity for monopoly platform provider is less than socially optimal network capacity. Fifth, if network neutrality regulation is enforced, the price of internet use is higher than monopoly platform provider and the price of contents is lower than monopoly platform provider. Also, the number of internet user is less than monopoly platform provider and the number of content provider is more than that. By the way, when network congestion increases, internet use price, the number of internet user, and the number of content provider are decreasing. Sixth, network neutrality regulation is more effective for internet user side than contents provider when network congestion is considered. This means that network neutrality regulation is not effective for contents market side when network congestion is seriously large.