• Korean Journal of Digital Imaging in Medicine
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• v.5 no.1
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• pp.130-136
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• 2002

One of current trends of medical technology is analog to digital. Moreover, The Government put a premium on PACS(Picture Archiving and Communication System) for Medical Insurance in November, 1999. Therefore many hospitals are installing(or planning to install) PACS facilities on their buildings. However most of hospitals didn't consider PACS facilities in the beginning of construction. In particular, the Networking is one of the most difficult things for PACS installation. There is no space for network equipments, and no path for network lines, etc. To solve these problems, wireless network is proposed. The wireless network is divided to three parts mainly. One is the wireless communication for Local Area Network, another is the data transmission through a satellite for Tele-Radiology, and the last one is the technology using Bluetooth for each sub-system of PACS. But there are other problems in wireless systems, i.e., network bandwidth, system stability, interference with other devices. The purpose of this paper is to suggest the future and new trend of PACS including all the problems.

• 한국IT서비스학회:학술대회논문집
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• 2009.05a
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• pp.371-375
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• 2009

전자정부 사업에서 개발프레임워크가 활발하게 도입되어 활용되어 왔으나 서로 다른 개발프레임워크 도입으로 인하여 전자정부 시스템간에 상호운용성이 보장 되지 못하고, 특정 개발프레임워크에 의한 사업자 종속성이 발생하게 되었다. 이러한 문제를 해결하기 위하여 전자정부 프로젝트에서는 표준화된 형태의 오픈 소스 기반 개발프레임워크를 구축하게 되었다. 본 논문에서는 표준 개발 프레임워크가 등장한 배경과 표준화 원칙들을 제시하고, 이러한 원칙들을 만족 시키기 위한 개발프레임워크의 실행환경과 개발환경에 대한 아키텍처 특성 및 기반기술을 제시하고자 한다.

• 한국IT서비스학회:학술대회논문집
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• 2008.11a
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• pp.43-46
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• 2008

전자정부의 중요한 가치이자 목표 중에 하나는 기관 및 업무의 경계 없이 정부를 하나로 연결하고, 국민에게 쉽고 편하게 최상의 정부서비스를 제공하는 것에 있다. 전자정부 선진 국가들은 상호운용성 제도가 시스템연계의 복잡도를 해결하고, 비용을 절감하며 서비스를 개선할 수 있는 필수요소로 인식하고 제도를 적극적으로 추진하고 있다. 우리나라의 경우도 정보화촉진시행계획, 상호운용성 확보를 위한 기술평가 기준 수립 등의 상호운용성과 관련된 제도들이 운영되고 있으나 제도간 연계 및 적용에 한계가 있는 것이 사실이다. 본 논문에서는 EU, 영국, 미국 등 주요 해외국가들과 우리나라 간의 상호운용성 제도 비교분석을 통해 국내 상호운용성 제도의 발전방향을 모색하여 본다.

• International Commerce and Information Review
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• v.6 no.2
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• pp.171-191
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• 2004

Recently, RFID(Radio Frequency IDentification) is observed with government and connection enterprises as the central figure. RFID utilizing radio is a technology that enable exchange of information sensing and recognize object. RFID is expected that the practical use limits widens by territory that can form vast market such as logistics management according to RFID's low-cost aggravation as well as usage of life and improvement of performance because present R&D is gone vigorously. Because RFID is possible application everywhere if it is various service industries as well as logistics, industry spot, manufactory and place that flowing of goods is, is used, and is becoming big limelight from society several territories.

• Proceedings of the Korea Association of Information Systems Conference
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• 2005.12a
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• pp.307-313
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• 2005

According to the Policy for ' e-Korea construction ' of Korean government, investment of information system during the Past decay are dramatically increasing. More than a half of this investment is cost of hardware infrastructure. So, accurate hardware sizing are essential for higher efficiency of investment. Accurate hardware sizing benefits are generally viewed in toms of the avoidance of excess equipment and lost opportunity costs by not being able to support business needs. Unfortunately, however, little research effort to make the hardware sizing methodology are doing. We propose a sizing method for information system in public sector. This method is determinated empirical study that are gathering and analyzing cases, making method and reviewing expert. Finally we are proposed calculating method for hardware components that is CPU, memory, internal and external disk according to the application system type which is OLTP, Web, WAS. Our study certainly will act as a catalyst for higher investment-efficiency of the future information programs in public sector.

• Journal of Information Processing Systems
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• v.7 no.1
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• pp.187-198
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• 2011

User authentication refers to user identification based on something a user knows, something a user has, something a user is or something the user does; it can also take place based on a combination of two or more of such factors. With the increasingly diverse risks in online environments, user authentication methods are also becoming more diversified. This research analyzes user authentication methods being used in various online environments, such as web portals, electronic transactions, financial services and e-government, to identify the characteristics and issues of such authentication methods in order to present a user authentication level system model suitable for different online services. The results of our method are confirmed through a risk assessment and we verify its safety using the testing method presented in OWASP and NIST SP800-63.

• Proceedings of the KSR Conference
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• 2003.10c
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• pp.42-48
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• 2003

Korea Railroad Research Institute(KRRI) have been developing Korean Tilting Train eXpress(TTX) with the service speed of 180km/h as the R&D project supporting by Korea government. The core of research is the development of the tilting bogie using the domestic tilting technologies. We developed the 3D-CAD prototype of tiling bogie model. In this paper we attempted to evaluate the structural strength of bogie frame using the Finite Element Method. Finally, we . would like to propose the application of the modifying part to the detail design.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2010.05a
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• pp.264-267
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• 2010

This research focuses on the development of numerical code to deal with compressible two phase flow around three dimensional objects combined with cavitation model suggested by Weishyy et al. with k-e turbulent model. The cryogenic cavitation is carried out by considering the thermodynamic effect on physical properties of cryogenic fluids in physical point of view and implementing the temperature sensitivity in the energy equation of the government equations in numerical point of view, respectively. The formulation has been extensively validated for both liquid nitrogen and liquid hydrogen by simulating the experiments of Hord on hydrofoils. Then, simulations of cavitating turbopump inducers at their design flow rate are presented. Results over a broad range of Nss numbers extending from single-phase flow conditions through the critical head break down point are discussed. In particular, thermal depression effects arising from cavitation in cryogenic fluids are identified and their impact on the suction performance of the inducer quantified.

• Journal of the Korea Society of Computer and Information
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• v.20 no.2
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• pp.181-185
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• 2015

This paper proposes a simple, approachable game via mobile application in order to change the attitudes of the general public towards donation. This game can become one of many representative online activities of NGOs(Non Government Organization). Also, as it is a song game, the public can enjoy it rather than feeling pressure. This study is expected to energize the industry of donation applications and contribute to the settlement of a popular giving culture through NGOs, corporations, and SNS(Social Networking System).

• Journal of Korea Society of Digital Industry and Information Management
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• v.9 no.4
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• pp.81-94
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• 2013

Recently, the dramatical increasement of personal information infringement makes the government strongly enforce the laws. The Key-point of law enforcement is the DB encryption. Nevertheless, DB encryption is the one of the hardest thing in the organization's security measures. The purpose of this paper is suggesting alternative means of residence numbers and showing the possibility of indicator usage for safety measures. This research suggested the best ways to make a decision through a before and after comparison of the DB encryption cost of the inherent identification number elimination in "Social Welfare consolidation service system". When this research result was applied in "Happiness-e-Um system", we found that the alternative means are more efficient than the residence number for encryption cost, system revision time and so on.