• Journal of Yeungnam Medical Science
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• v.13 no.1
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• pp.97-109
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• 1996

Recently there has been attempts to develop hospital information system including order communicating system, patient tracing system, tumor registry system, office automation system and picture archiving and communication system(PACS). The authors devloped a practical system that was operated via order communication system of Yeungnam University Hospital. The system provided us the speed, accuracy, reliability, retention, economy and wide applicability through practical test. So we believed that this system would be one of standard computerized programs in radiation oncology practice and providing widely usable data for clinical statistics, medical record, tumor registry system and clinical researches.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.36 no.10
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• pp.1267-1274
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• 2012

A guide vane plays a key role in controlling the flow rate of water supplied to the turbine of a hydropower plant. It has been reported that guide vane bearing bushings are subjected to considerable wear, which requires them to be maintained. An ancillary service such as frequency control and black start causes cyclic low opening operation of the guide vanes. It is empirically well known that such operation increases the wear rate of the guide vane bearing bushing. In this study, the effect of low opening operation on the increasing wear of the guide vane bearing bushing is quantitatively assessed via finite element flow analysis, finite element stress analysis, and relative wear evaluation. As a result of the assessment, it is identified that the pressure applied on the guide vane surface increases and the contact length between the outer surface of the guide vane stem and the inner surface of the bearing bushing decreases with a decrease in the opening of the guide vane. In addition, low opening of the guide vanes results in an increase in the relative wear owing to the generation of high contact pressure on the bearing bushing surfaces.

• Journal of Korean Library and Information Science Society
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• v.42 no.3
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• pp.311-330
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• 2011

In line with the establishment of the National Sejong Library, the main objective of this study is to construct a basic management plan to enable smooth operations of the library from its opening. To follow through with this goal, this paper analyzes the environment surrounding the National Sejong Library, puts forth new strategies to reinforce the policy information service, and suggests new development plans for the library's collection. This study examines the internal and external environment of the library through face-to-face interviews with library staff, while conducting surveys on public officials transferred to the city for suggestions on how to reinforce the policy information service. The vision of the National Sejong Library is to become a specialized resource institution in administrative policy, while also fulfilling the day-to-day needs of the community and serving as a supplementary record storage facility to the National Library. In order to reinforce the policy information service, it is crucial to digitize all policy-related theses, reports, and trend research, while establishing a firm network with other libraries in Korea and abroad to provide a wider range of policy files, local government policy documents, and other resources.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2001.10a
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• pp.142-145
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• 2001

I did research or design technology of(integration) network of PSTN and PSDN in this paper. Network structure model in association with soft switching and access gateway can create various services based on web and live time and service fee at the rate of bandwidth which can't be provided by existing network based on SONET. Also, interns of capability(function) of each area and construction of local network subscribers, it has great recovery capability by separating each network as local areas. It indicates that it can additionally maximize the application of its own communication network and drastic reduction of communication cost because it is alternated to exclusive usage cost.

• Journal of the Korea Society of Computer and Information
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• v.25 no.6
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• pp.73-79
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• 2020

Nowadays, with the rapid spread of streaming services in the internet world, security vulnerabilities are also increasing rapidly. For streaming security, this paper proposes a PN(pseudo-random noise) distributed structure-based security processor for web streaming contents(SP-WSC). The proposed SP-WSC is basically a PN distributed code algorithm designed for web streaming characteristics, so it can secure various multimedia contents. The proposed SP-WSC is independent of the security vulnerability of the web server. Therefore, SP-WSC can work regardless of the vulnerability of the web server. That is, the SP-WSC protects the multimedia contents by increasing the defense against external unauthorized signals. Incidentally it also suggests way to reduce buffering due to traffic overload.

• Journal of Korean Society of Transportation
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• v.17 no.2
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• pp.137-147
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• 1999

This paper studies on the optimal bus network design in the framework of the set covering theory. The theory enables to cover passenger's loading and alighting areas as the set, and maximize the covering set as much as possible. In other words, it calculates the minimal set of the bus routes for covering whole bus passengers demand. After the optimal set of the bus routes is generated by the set covering theory, multimodal traffic equilibrium assignment is used for evaluating the generated set in terms of passenger's mode and route choice behavior. Whilst most previous works on it have been based on analyzing a specific route in a limited area, this study seeks to optimize the whole bus network.

• Journal of Digital Convergence
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• v.13 no.12
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• pp.151-160
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• 2015

As a lexical meaning, casino is defined as "a certified gambling house, equipped with recreational facilities such as dance and music, etc., where people play roulette or cards." Casinos started from 17th to 18th century for European nobility and their social meetings and established a casino industry framework in the United States in the 1930s. The success of the casino business leads to the increase of sales; it became very helpful for the local and national government revenues and also for the related incidental tasks. Casino operations include a variety of fields, such as general customer management, dealer game management, security, account management, currency exchange, re-exchange management, marketing management, comp management and placement management, etc. These operations should be organically connected to each other by information systems such as a groupware, ERP and Customer Relationship Management (CRM), etc. In addition, in order to effectively manage comprehensive entertainment service, including accommodation and tourism, it is necessary to develop an information system which supports casino business and collateral entertainment service, collects the data generated throughout the business and provides information about the situations of management. Thus, this study will propose a casino information system designed and implemented, considering these details.

• 한국IT서비스학회:학술대회논문집
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• 2006.05a
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• pp.267-272
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• 2006

일반적으로 거버넌스는 사회가 스스로를 이끌어나가는 과정을 의미하며, 전자거버넌스시스템(electronic governance system)은 이러한 거버넌스 지원을 위한 차세대 전자정부시스템을 의미한다. 전자거버넌스시스템은 주로 정부기관의 기능 강화에 초점을 두고 있는 전자정부시스템과 달리 능동적인 시민참여에 중점을 두고 있으므로 이에 부수되는 정보공유, 보안, 프라이버시, 구성원 사이의 상호 신뢰형성 등의 문제를 해결하여야 한다. 현재 거버넌스 관점에서 행정에 대한 시민참여가 활발하게 논의되고 거버넌스에 대한 이론 및 실증적 연구는 활발히 연구되고 있으나, 전자거버넌스시스템의 개발에 대한 연구는 매우 미약한 실정이다. USN(Ubiquitous Sensor Network)은 유비쿼터스 컴퓨팅 환경의 중요한 한 축으로써 많은 응용 잠재성을 내포하고 있으며, IT839 전략에 따라 국내 USN 인프라스트럭쳐에 대한 활발한 연구${\cdot}$개발 및 시험사업이 진헹되고 있다. 본 논문은 이러한 USN 인프라스트럭쳐를 활용하여 구성원 사이의 신뢰형성을 도울 수 있는 전자거버넌스시스템의 구조에 대하여 논한다.

• The Journal of the Korea Contents Association
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• v.9 no.4
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• pp.198-206
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• 2009

Recently, there has been a trend designing a consistent and uniform regional identity in South Korean provinces as demonstrated by efforts in Chungcheongnam buk-Do. The motivating goals have been to establish an identity for local residents, provide voluntary services, achieve higher value-added business, introduce new management strategies, and establish a local brand through the exportation of local specialties. The by-products of these goals when accomplished include: maintaining a consistent policy, securing governmental economic efficiency of the province, characterizing local culture and improving quality of life. In this study, I tried to find out whether a local logo which is associated with a city plays a core role in the city's identity by comparing each symbol's shape, color and other components which are ways of expressing its meaning. In this respect, I analyzed the type of the Chungcheongnam buk-Do's symbol marks (30) and tried to suggest the desirable direction in developing symbol marks.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.30 no.4A
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• pp.304-311
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• 2005

OCSP has specific characters which can suspend, close, and correct in real time. But, as more clients use the OCSP server verification, more updated information is needed, which can lead to jamming in the OCSP server. To apply this technique of Distributed OCSP server so as to reduce the certificate verification OCSP from jamming. Also, the Distributed OCSP server will solve the problems of the intensive central structure. Simulation results show that the average reply time of certificate verification request and server load are reduced in the case using distributed OCSP. In addition to this advantage, resource distribution and fault tolerance are acquired because of multiple OCSP.