• 한국정보시스템학회지:정보시스템연구
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• 제14권1호
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• pp.251-275
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• 2005

The advantages of implementing a virtual channel can be derived from the notion of the 'death of distance' that would result from electronic commerce. According to this view, the internet was going to make distance irrelevant, in that firms would no longer need to establish a physical presence in a geographical location in order to do business there. However, on-line firms selling physical products could take advantages of presence in the related off-line(brick and mortar) industrial area. This paper developed a conceptual framework that highlights the various types of synergies by location on-line businesses in the related off-line industrial area. Using data from 96 on-line ventures selling physical products, factor analysis was used to figuring out six synergies including improved customer trust, value-added service, cost savings, personnel and organizational efficiency, sharing products and customer information, relationship with suppliers, and relationship with local government. The six empirically derived critical synergy factors were then used to examine how they improve performance of the on-line ventures measured by Balanced Scorecard(BSC). According to lthe results, we concluded that the on-line firms selling physical products can take advantages of presence in the related off-line industrial area.

• 한국정보통신학회논문지
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• 제9권1호
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• pp.181-187
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• 2005

본 논문에서는 CDMA무선망을 이용한 PDA기반의 취약한 전송로 상에서도 안전하게 메시지를 전송할 수 있는 서비스 모델과 PDA 특성을 고려한 보안 메시지 전송 프로토콜 제안하고 구현하였다. 제안된 서비스는 유선 인터넷 망과 오프라인 상태의 클라이언트 단말기를 SMS(Short Message Service)를 이용하여 연결하였다. 단말기는 SMS 메시지 수신 후에 SMS의 데이터를 분석하여 RAS(Remote Access Service)를 통해 데이터 채널을 생성하고 서버 측의 데이터가 PUSH 되도록 구현되었다. 구현된 보안 프로토콜은 SMS와 데이터 채널을 가지는 2채널 방식을 이용하여 각 통신 부문에서 안전한 통신을 보장 할 뿐 아니라, 안전한 세션키 통신을 위한 비표(nonce table)키 방식을 사용하였기 때문에 세션키 전송 시 키 길이도 줄이면서 높은 비트의 암호화를 할 수 있는 효과를 보였다.

• 한국안전학회지
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• 제12권4호
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• pp.21-26
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• 1997

Korea Atomic Energy Research Institute (KAERI) developed a risk monitor called Risk Monster which supports for plant operators and maintenance schedulers to monitor plant risk and to avoid high peak risk by rearranging maintenance work schedule. Risk Monster can update the plant risk continuously according to the change of system/component configuration since Risk Monster reevaluates the plant risk based on the Probabilistic Safety Assessment (PSA) results. A brief description of Risk Monster is provided. The PSA model of UCN 3, 4 nuclear power plant was converted by KAERI to Risk Monster model. Using this Risk Monster model, a feasibility study of the on-line maintenance of an Essential Service Water (ESW) pump was performed. On-line maintenance of one ESW pump has been shown to be acceptably safe, and has economic benefits. In addition, it is not a violation of technical specification to continue plant operation with an out-of-service ESW pump.

• 통상정보연구
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• 제5권2호
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• pp.3-17
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• 2003

This paper examined a e-Business utility of on-line shopping mall firms. Based on the literature review and cases study, the following results were found. First, in e-business policy, it was found that partnership between government and market are very important to e-business utility. Second, e-CRM of on-line shopping mall firms should be considered web site design based on commodity, cafe based on experience and information shares, and transaction confirm service. Third, B2C e-commerce model should be contained firm-specific force, customer oriented force, social force, and technology force.

• 산업공학
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• 제13권4호
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• pp.709-716
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• 2000

In this paper, We analyze a capacity dimensioning and performance of the access line to the X.25 packet network when the AO/DI internet service is connected via D-channel. We show the forecasting methodology of the traffic demand of the D-channel internet services when the TDX-1OA switching system accommodates the target number of subscriber. Based on the traffic demand forecast, the required capacity of the access line is suggested to prevent bottleneck problem in the access line to the X.25 packet network.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2009년도 춘계학술대회 논문집
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• pp.315-321
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• 2009

Since the KTX start its service on April 1st of 2004, KTX increased its share up to 17.4% (2008). It's the 2nd after the passenger car share of 59.2% in the national transportation, but the gap is still wide. In addition, because of the rise of goods' and oil price, the share of intercity express bus is growing up. Nevertheless Korail is trying to improve the train schedule and develop internodal transit system, the number of passengers of KTX is remain flat. KORAIL should start and proceed the tasks below. - Analysis of the 5 year's operation of KTX since the year of 2004 to make plans for the steady growth - development of the KTX operation plan for expansion of railway - preparing the operation of additional passenger rail services on the mail line for newly introduced trains. - expansion of KTX's service area after the introduction of KTX-II - introduction of other new trains - examination for the action plans to promote marketing in main-line including refinement of the rate structure

• 인터넷정보학회논문지
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• 제16권5호
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• pp.49-57
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• 2015

본 논문에서는 응용 맞춤형 그래픽 분할 실행 라이브러리에 기반한 효율적인 온라인 소프트웨어 서비스에 대하여 소개한다. 그래픽 분할 실행을 이용한 소프트웨어 서비스는 클라이언트 렌더링을 통하여 3D 그래픽 소프트웨어와 같은 고사양의 소프트웨어를 서버 기반의 온라인 소프트웨어 서비스로 제공할 수 있다. 그래픽 분할 실행은 서버에서 소프트웨어가 실행될 때, 그래픽 관련된 작업은 클라이언트의 GPU를 이용하여 처리하고, 데이터 관련 작업은 서버의 CPU를 이용하여 처리하는 방식이다. 그래픽 분할 실행 소프트웨어 서비스의 성능을 향상시키기 위하여, 비동기 전송 채널을 추가하고, 최적화 된 소프트웨어 공통 모듈과 소프트웨어 맞춤형 모듈을 기존의 그래픽 분할 실행 엔진에 추가한다. 이를 위하여, 본 논문에서는 그래픽 관련 API와 메시지들을 분석하여 소프트웨어 맞춤형 모듈을 구현하고, 서버 사이드 캐싱 방법을 통하여 최적화된 소프트웨어 공통 모듈을 구현하는 방법에 대하여 기술한다. 마지막으로, 성능 비교 실험을 통하여 개선된 분할 실행 엔진이 더 나은 성능을 가짐을 보여준다.

• 동아시아경상학회지
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• 제8권3호
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• pp.15-24
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• 2020

Purpose - New technologies allow service providers to integrate all the customer information within and between contact channels so that they can offer individualized services. The availability of new mobile devices enables retailers to interact with customers through countless channels (Rigby, 2011). The objective of this research is to examine customers' attitudes toward O2O (on-line to off-line) services and their intention to use based on the Technology Acceptance Model (TAM). Research design, data, and methodology - Utilizing the TAM model, the mediating effect of the users' attitudes toward O2O services on the relationship among perceived ease of use, perceived usefulness, perceived risks and intention to use are to be investigated. Results - The result shows that the perceived ease of use, perceived usefulness, perceived risks have a significant effect on customers' attitudes toward O2O services. It is also revealed that the attitude toward O2O services has a mediating effect among perceived ease of use, perceived usefulness, perceived risks and intention to use. Conclusions - The boundary between on-line and off-line is eroding and various services based on the O2O platform are growing. The results of this study and managerial implications can be applied to O2O platform operators or enterprises planning to sharp on their competitiveness edge through offering variations of service channels.

• 한국소음진동공학회논문집
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• 제14권10호
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• pp.999-1006
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• 2004

Recently, the ride comfort problem becomes increasingly important because of today's needs for train speedup. The railway has the track irregularities which cause vibrations, such as rail joints, turnout, level crossing, transition corves and super-elevation ramps, and variations in the track level(z-axis) and the gauge(y-axis). In Korea, the service run of the high speed train has been made since the 1st of April, 2004. The commercial high-speed trains must be run on the compound lines which are composed of high-speed line and conventional line. The high speed lines in both Kyoungbu line and Honam line have 57.5％ and 33.8％, respectively In this Paper, the ride comfort has been reviewed by the various experimental methods when the high-speed trains are operated on both Kyoungbu line and Honam line. The results show that the high-speed train has no problems from the viewpoint of the comfort ride during the operation on the high speed line and conventional line.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1993년도 하계학술대회 논문집 A
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• pp.473-475
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• 1993

Premium Service is the next service to be developed after the Freephone Service and Credit Call Service which has currently been developed and is being now tested. Premium Service is a service which provide information on a telephone line. The calls are charged with a special rate which includes service and call charge. Public telecommunication operator performs charging and accounting from the service user for the service provider and for every service provided subtracts the commission from the part of service revenue and gives the rest back to the service provider. This paper is about the study on the implementation of the Premium Service in the Service Switching Point.