• Proceedings of the Korea Society for Industrial Systems Conference
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• 2008.10b
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• pp.404-428
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• 2008

기대일치이론에 기초한 기대일치모형은 정보시스템 연구 분야에서 정보시스템의 지속적인 사용 혹은 사용의도를 설명하는 핵심 이론으로 언급되어 왔다. 이러한 기대일치모형과 더불어 최근에 정보시스템 분야에서 주목을 받고 있는 또 다른 개념은 자동화된 행동 경향을 의미하는 ‘습관’이다. 본 연구에서는 이러한 두 가지 개념들을 기초로 모바일 인터넷 서비스에 대한 지속적인 이용 상황에서 습관과 기대일치모형을 통합하는 시도를 하였다. 이에 일치, 지각된 유용성, 지각된 사용 용이성, 습관 등의 수용후 신념, 이용자 만족, 지속적 이용의도로 구성된 연구모형을 구성하고 이를 검증하였다. J도내 250명의 대학생들을 대상으로 설문자료를 수집하여 분석한 결과, 기대일치와 지각된 유용성이 모바일 인터넷 서비스의 이용자 만족에 대한 주요 요인으로서 나타났다. 또한 지각된 유용성, 이용자 만족, 습관은 모바일 인터넷 서비스에 대한 지속적 이용의도를 결정하는 주요 요인으로 나타났다. 반면에 지각된 이용 용이성은 이용자 만족과 지속적 이용의도 모두에 대하여 아무런 관련성이 없는 것으로 나타났다.

• Journal of the Korean Society for Library and Information Science
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• v.56 no.1
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• pp.277-296
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• 2022

Despite the characteristics of public data with various potentials, few studies have been conducted on general users who lack an understanding of data as well as on expansion of the service uses. This study examined which digital-service-quality factors affect the intention to continue using public data services based on the expectation confirmation theory. As a result of the analysis, satisfaction partially mediated between expectation agreement and continued use intention for understandability and efficiency, which were combined as one factor, and completely mediated the relationship between perceived usefulness expectation agreement and continued use intention. It can be seen that the more the understanding and usefulness of the information provided by the service is satisfied, the higher the willingness to use it. Accordingly, it suggested adding an electronic bookmark function and the provision of online community for users to improve the overall quality of services. This study is significant in that it provided evidence on which part to focus on when designing electronic services from the point of view of general users.

• The Journal of Society for e-Business Studies
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• v.9 no.3
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• pp.169-190
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• 2004

This study involves the test of constructs for measuring the web site user expectation, perceived performance regarding IQ, expectation congruency, and satisfaction about influence overall satisfaction. The findings can be summarized as follows. First, Web-IQ expectation appeared to have a positive effect on Web-IQ perceived performance by expectation congruency and a positive effect on perceived performance by assimilation effect. Second, Web-IQ expectation did bot appear to have a negative effect on Web-IQ expectation congruency. Although that was rejected, it differs from established researches. Some prior Web-IQ expectations that approach to congruency after one's post Web-IQ expectation. Third, Web-IQ perceived performance appeared to have a positive effect on Web-IQ expectation congruency. Fourth, result that analyze about effect that congruency gets to Web-IQ satisfaction although Web-IQ expectation appeared to have a positive effect on overall satisfaction.

• Journal of Korea Society of Industrial Information Systems
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• v.16 no.5
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• pp.151-161
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• 2011

Social Network Service is a web-based service that allows the people to construct relationship among users with same interest and supports various activities such as managing personal relations and sharing information or contents. Based on the IS Post-Acceptance model and Success Model, this study examines factors influencing the continuance intention in the SNS. Questionnaires are collected from 275 students who are using the SNS. The results are following: first, the perceived usefulness and satisfaction have positive effect on the continuance intention. Second, the perceived usefulness, confirmation, system quality and information quality have positive effect on the satisfaction. Third, the confirmation has positive effect on the perceived usefulness. Fourth, the system quality and information quality have positive effect on the confirmation. Fifth, the satisfaction is the strongest predictor of the continuance intention and the perceived usefulness is the strongest predictor of the satisfaction.

• Information Systems Review
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• v.17 no.1
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• pp.171-197
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• 2015

SNS provider's biggest interest lies in enhancing user satisfaction through user request analysis and developing services to induce continuous use of those devices. In particular, setting up management directions to develop SNS at maturity is important and it is also important to identify the functions which SNS users are pursuing for and identify what's considered unsatisfiable among the services currently provided in light of user expectations. To this end, this study further presents sociality quality and personal emotional quality reflecting the characteristics of SNS to the existing quality factors and expands to Expected Confirmation Model. This study further took into account of sociality quality and personal emotional quality reflecting the characteristics of SNS and approached to them from the perspective of quality in a comprehensive way, analyzed the degree of impact on recognition factors, and presented the factors that had an impact on the satisfaction with usage and intention to use continuously.

• Journal of Digital Contents Society
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• v.19 no.7
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• pp.1313-1322
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• 2018

This study has tested by positive analysis to investigate use intention of self service shop offered by franchisee. The independent variable of self service shop consisted of technology based self service and feature of shop largely. Convenience of technology based self service, speed, functionality of shop feature, suitability, and cost of self service shop had been selected. As parameter, expectation confirmation and satisfaction by using Expectation confirmation theory had been selected and a dependent variable had been selected use intention lastly. The study conducted a survey of self service shop customers and 181's answers out of them had been used. According to the analysis result, convenience, speed, functionality, and suitability had a positive effect on expectation and convenience and suitability variables only had positive effect on satisfaction. The cost did not have an effect on use intention and expectation confirmation and satisfaction had a positive effect on use intention lastly.

• Transactions of the Korean Society of Mechanical Engineers
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• v.9 no.1
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• pp.127-134
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• 1985

On two type regenerator which is represented by their parameters f(t), f(x,t) for generalized regenerating heat exchanger, the temperature distributions are studied analytically in this paper. For f(x,t) regenerator type, particularly, we are able to induce the simplified temperature distribution and convection heat transfer coefficient in heating which apply on condition that regenerator having short transfer period from above theoretical analysis.

• Korean Journal of Optics and Photonics
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• v.7 no.3
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• pp.219-226
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• 1996

The wave-particle duality of light plays important role in quantum optics and it often produces a result different from that of classical wave theory. In this paper, we study the intensity and phase fluctuation of light which show certain change after light goes through a beam splitter, and show the difference between the classical and quantum theory. We show quantitatively that the uncertainty of phase increases at the output of a beam splitter due to the contribution of vacuum fluctuation, even though classical theory predicts no such change in phase fluctuation. The expectation values of normally ordered operators are introduced where the vacuum effect is naturally eliminated, and it is shown that the classical informations are recovered in this way. Analysis on the expectation values produces a distinction between measured phase and inferred phase values and they are related through the contribution of vacuum field.

• Management & Information Systems Review
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• v.35 no.1
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• pp.23-50
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• 2016

The purpose of this study is to investigate the determinants of employees' knowledge contribution to 'Easysam', the Defense Knowledge Sharing System(DKSS), and provide managers and system designers with implications for enhancing the usage of the DKSS. Although the system seems to be helpful for employees to conduct their tasks by sharing and applying knowledge from the system, use of the system is confined to restricted employees and little empirical, systematic research has been done for this area. Therefore, using the motivation opportunity ability theory of behavior, this study hypothesizes that motivation factors(enjoy helping, reward confirmation), opportunity factor(system accessibility), and ability factor(self-rated expertise, tenure in the field) increase the level of employees' knowledge contribution to the DKSS. This research also includes hypotheses which address the effect of system use voluntariness, a moderator, on the relationship between predictors described above and knowledge provision. Survey results show that the effect of enjoy helping, reward confirmation, self-rated expertise and system accessibility is significant on employees knowledge provision. However, tenure in the field has no influence on its contribution of knowledge to the system. Theoretical and practical implications are provided.

• 전기의세계
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• v.34 no.11
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• pp.654-665
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• 1985

현재 전자군의 매개변수해석에 많이 이용되고 있는 방법과 이들의 실측을 하기 위한 실험방법으로는 몇가지가 있다. 대체로 정상Townsend실험, 퍼스Townsend실험, 비행시간관측실험 등이 있으며, 본 고찰에서는 이들을 중심적으로 취급하였다. 그러나 이들은 측정실험방법이 각각 다름에 따라 이론적 해석방법도 다르다. 또한 본 논문에서는 에너지분포를 2차근사 방법으로 해석한 것을 서술하고, 그 이상의 고차항까지 고려하여 해석결과와 비교한예는 그림7과 같다. 이와 같이 기체방전현상의 이론적 해석이 실험치와 잘일치되는 것으로 보아 기체계의 절연설계나 특성 예측이 가능하기 때문에 공학적 응용이 기대되는 모델화도 이루어질 수가 있다. 기체방전simulation이 응용되어지고 있는 분야는 이외에도 가장 현대적인 응용인 gas laser의해석, laser조사에 의한 방전트리거기구의 해석 등 상당히 광범위하게 응용되어지고 있으므로 이에 대한 연구가 활성화되어져야 하겠다.