• Proceedings of the Korea Contents Association Conference
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• 2007.11a
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• pp.527-529
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• 2007

We build the striped and parallel gridftp server on WAN and test to find the best parameters for high performance. Also we check the various problems about gridftp service as production level and propose a best configuration for real service environment.

• International Journal of Contents
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• v.12 no.3
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• pp.29-33
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• 2016

Cloud computing makes extensive use of virtual machines that permit for workloads, as well as resource usage, to be isolated from one another, and a hypervisor can be used by a virtual machine to construct cloud computing infrastructure. However, the hypervisor has high resource usage when constructing virtual machines, which results in a waste of allocated resources when not activated. Docker provides a more light-weight method to obtain agile computing resources based on a container technique that handles this problem. In this study, we have chosen this specific tool due to the increasing popularity of MapReduce and cloud container technologies such as Docker. This study aims to automatically configure Twister workloads for container-driven clouds. Basically, this is the first attempt towards automatic configuration of Twister jobs on a container-based cloud platform VM for many workloads.

• Proceedings of the Korea Contents Association Conference
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• 2009.05a
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• pp.8-11
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• 2009

NAC(Network Access Control) technology is intended for authentication of internal networks access through various paths. In this paper, we build computer network platform using NAC and Extreme switch and confirm authentication for the platform. The platform consists of PIX, NAC and authentication server.

• Proceedings of the Korea Contents Association Conference
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• 2005.11a
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• pp.654-658
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• 2005

This paper investigates a method of application of terrestrial DMB(Digital Multimedia Broadcasting) to telematics wireless network, and telematics services using terrestrial DMB(T-DMB). Especially, we introduce a return channel configuration to provide an interactive TPEG service using T-DMB data broadcasting.

• Management & Information Systems Review
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• v.11
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• pp.45-69
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• 2002

One of important technology that must improve compulsorily on information-oriented society stores, search and transmit cultural contents data of great quantity in heterogeneous environment. SAN appeared by solution to resolve the problem such as integration management of heterogeneous system data, effective practical use of storage, data transmission limit is happened from here. SAN is system that manage and shares data of large quantity efficiently attaching directly to high speed network such as Fiber Channel that storage system has been attached to server individually SAN became more complicated than existent storage environment although offer much advantage such as decrease of storage expense and flexibility of system configuration. This study argues management way could consider in such environment that understand complexity and component of networked storage system.

• Proceedings of the Korean Society of Computer Information Conference
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• 2016.01a
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• pp.299-302
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• 2016

본 논문에서는 작은 화면의 스마트 폰에서 볼 수 있는 전자책을 구성하였다. 대부분의 전자책이 PDF 파일과 같이 기존의 종이책을 단지 정보처리 기기에서 보는 개념의 채용 형태이거나 제한된 규정을 통해 구성된 내용을 스마트 폰보다 화면이 큰 전용 단말기를 통해 보도록 되어 있다. 본 연구에서는 PDF나 웹 형태가 아닌 앱 형태로 컴퓨터보다도 널리 퍼져있는 스마트 폰을 통해 책을 보도록 하였다. 현재 전자책의 실질적 표준 역할을 하는 EPUB는 전용 단말기를 이용한 전자책도 텍스트형 콘텐츠 또는 잡지형 콘텐츠로 정보 처리 기기의 다양한 기능을 살리지 못하고 있다. 본 연구에서는 앱을 이용한 전자책의 초기 시도로 기존 책의 구성을 가능한 지키면서 앱의 다양한 능력을 통해 많은 편리성을 살리는 한편 특히 본문은 작은 화면에 많은 정보를 담는 것은 책을 읽는 독자에게 무리한 요구를 하는 것이므로, 본문의 내용과 관계된 이미지를 의미 단위로 토막을 내고 이를 항, 절, 장으로 구분지어 태그를 붙여 데이터베이스에 저장한 후 태그를 기반으로 본문 화면에 시간차를 두고 자동 출력하도록 하는 시도로 사용자의 편리를 도모하였다.

• Proceedings of the KIEE Conference
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• 2004.05a
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• pp.62-64
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• 2004

P2P Systems have grown dramatically in recent years. Now many P2P systems have developed and been confronted by P2P technical challenges. We should consider how to efficiently locate desired resources. In this paper we integrated the existing pure P2P and hybrid P2P model. We try to keep roles of super peer in hybrid and concurrently use pure P2P model for searching resource. In order to improve the existing search mechanism, we present contents-based classification mechanism. Proposed system have the following features. This can forward only query to best peer using RI. Second, it is self-organization. A peer can reconfigure network that it can communicate directly with based on best peer. Third, peers can cluster each other through contents-based classification.

• Journal of Digital Contents Society
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• v.14 no.4
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• pp.505-511
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• 2013

Recently, cloud computing is being emerged paradigm that a support computing resource flexible and scalable to users as the want in distributed computing environment. Actually, cloud computing can be implemented and provided by virtualization technology. In this paper, we studied open source based cloud computing and built a educational practice system through cloud computing. Virtualization-based cloud computing provides optimized computing resources, as well as easy to manage practical resource and result. Therefore, we can save the time for configuration of practice environment. In the view of faculty, they can easily handle the practice result. Also, those practice condition reuse comfortably and apply to various configuration simply. And then we can increase capabilities and availabilities of limited resources.

• The Journal of the Korea Contents Association
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• v.20 no.3
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• pp.390-399
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• 2020

The purpose of this study was to apply Q methodology to the graduate students who have a good reputation in the food service industry in Seoul, in order to grasp the subjective perception of the customers about the small-scale banquet menu promotion of luxury hotels. As a result of the type analysis, a total of four were derived. Type 1 (N = 4): Banquet menu configuration comparison type, Type 2 (N = 5): Banquet food hygiene-seeking at a Type, Type 3 (N = 3): Banquet menu quality satisfied type, Type 4 (N = 6): Banquet course focus type. Based on this study, it will be used as basic data for the direction of the development of small-scale banquet menu promotion of the luxury hotel, the boom of the domestic hotel industry, and the service quality in the future.

• The Journal of the Korea Contents Association
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• v.9 no.8
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• pp.41-48
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• 2009

As enactment and enforcement of capital markets integration law, investment banks are going to be appeared in our financial market and be able to provide payment services. To provide these kinds of services, investment banks need to be participated in the financial network. As the financial network enormously affect the economy, the operation of the network will require a variety of risk managements. In this paper we define operational risk management criteria for the financial network such as security, in-time response, economical efficiency and stability to be required for the healthy economy and propose the configuration of the financial network system based on virtual private networks for investment banks to provide payment services. Finally we analyze that the proposed VPN configuration for financial networks has high security and in-time response with the cost and operation effective.