• 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.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.5 no.2
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• pp.150-160
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• 2004

This study investigates the influential factors for the user's satisfaction in usage of PDA in Korea Postal Services. This is the case of user's acceptance of information technology that organization mandatorily implements for the sake of employee's productivity. The factors examined in this study include system quality, information quality, perceived usefulness, user satisfaction, and compatibility with work. All these factors were found significant for users satisfaction. Especially, we notice the close relationship between compatibility with work, perceived usefulness, and user satisfaction in case of nonvolitional IT usage.

• Proceedings of the Korea Database Society Conference
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• 2010.06a
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• pp.75-90
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• 2010

기술 수용 모델을 통하여 개인이 신 기술을 채택하여 사용하는 경향에 관한 연구가 활발히 논의되고 있다. 그러나 많은 연구가 비자발적인 시스템 환경에서 편리성, 유용성의 개선을 통한 사용의도 향상에 관한 것이다. 최근의 인터넷의 보급은 기업의 정보시스템 환경에도 많은 변화를 주고 있으며 사용자들에게도 다양한 기회를 제공하고 있다. 브라우징, 컴포넌트화를 제공하는 웹 환경으로 전환된 개인화된 정보시스템은 종전 클라이언트/서버 환경과 달리 사용자들에게 스스로 사용 환경을 구성하고 업무에 활용할 수 있는 기회를 제공하고 있다. 인트라넷 시스템을 대상으로 실증 분석을 실시한 결과 개인화를 통하여 정보시스템을 자발적인 사용 환경으로 구축하고 편리성과 유용성을 개선하여 새로운 기술 수용에 대하여 우호작인 태도를 가질 수 있으며 이를 통하여 사용 의도를 향상 시킬 수 있음을 검증하였다. 향후 자발적인 환경으로 기업의 정보시스템을 구현할 경우에 필요한 개인화 변수 및 모델을 제시하였다.

• Informatization Policy
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• v.25 no.2
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• pp.46-66
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• 2018

This research explores the factors affecting infusion of public administrative information systems(IS) and analyzes its impact on work performance. For this purpose, the factors affecting the infusion of IS are classified into voluntary and involuntary motivations based on the self-determination theory that explains individual motivations. As factors for voluntary motivation, performance expectancy, personal innovativeness, and organizational citizenship behavior are proposed, while government influence, competitor influence, and the top-level management influence are proposed as factors for involuntary motivation. The analysis shows the voluntary motivation factors-performance expectancy, personal innovativeness, and organizational citizenship behavior-do affect infusion of IS, whereas the involuntary motivation factors-government influence, competitor influence, and the top-level management influence-have no statistically significant impact on the infusion of IS. The relationship between infusion of IS and work performance is found significant. While individuals are unable to decide on the adoption of IS in an involuntary environment such as in the case of using the public administrative IS, the results show that the factors related to individual autonomy have an important role in extended, active usage of IS beyond the mandatory level.

• The Transactions of the Korea Information Processing Society
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• v.4 no.2
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• pp.441-455
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• 1997

An agent system is comsisted of agents that have the following properties: autonomy, scial ability, reactivity, pro-activeness.It provides a good enbironment to an end-user.Therefore, an end-user can feel more natural and comfortable in using a computer system.However, a system develper will have difficulty because he(or she) has to follow the funditons and the speiciffcation which are generally required for an agent system.Moreover, it is hard to ues resoures mutually and share information between agent systems that are solely developed without satisfying the standardization .In this paper, we describe the requirments for and agent development tools(ADT).We also introduce the ADT that is developed to efficiently resolve the problems occurred in develping an agent system.The main properties of the ADT are:ether expert or non-expert can easily intervace an appli-cation to existiong agent systems and effectively manage the resoures that are related to the agent systems.There-fore , one can easily expand agent system and achieve high quality of services with our ADT.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2004.11a
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• pp.259-268
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• 2004

유비쿼터스환경으로 발전하기 위하여 네트웍을 구성하는 시스템들의 문제나 장애의 자가 진단 및 치유에 대한 요구가 높아지고 있다. 본 논문에서는 이러한 유비쿼터스환경에서 여러 시스템들이 스스로 자신의 오류나 문제를 관찰, 진단하고 치유할 수 있는 자가치유 시스템을 제안한다. 특히, 제안 시스템은 기존의 자가 치유시스템에서 연구되어왔던 일률적인 치유가 아닌 각각의 시스템의 상황을 인식하고 그것에 맞추어서 치유전략을 달리하는 상황인식 기능과 치유 결과 분석을 통해 치유전략을 자발적으로 개선해 나가는 기능을 제공한다. 구체적인 주요 기능은 다음과 같다: 치유대상들의 의존성 점검을 통한 근원적인 문제 해결, 자가치유를 위한 효율적인 리소스 사용, 벤더의 웹서버를 검색하여 치유정보를 수집, 벤더 의존성의 경감등, 치유프로세스의 개선은 물론 치유를 위한 관리자의 작업 부담을 상당 부분 경감할 수 있게 된다. 제안 시스템은 시뮬레이션을 통하여 그 유효성을 입증하고 있다.

• Proceedings of the Korean Nuclear Society Conference
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• 1996.11b
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• pp.769-774
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• 1996

DUPIC 공정은 재처리공정과는 달리 공정의 전ㆍ후를 통하여 사용후핵연료의 양이 변하지 않기 때문에 시설이 원활히 운전되기 위해서는 사용후핵연료가 결손 또는 전용되지 않았음을 증명할 수 있어야 한다. 따라서, 핵투명성(nuclear transparency)을 보장할 수 있는 DUPIC 핵연료 보장조치용 비파괴측정 장치의 개발이 요구되었으며 $^3$He tube, 폴리에칠렌(CH$_2$)감속재, 텅스텐 차폐체 그리고 PSR(portable shift register) 등으로 구성된 측정 시스템을 제작하였다. 본 장치를 사용하여 사용후핵연료에서 검출되는 중성자중에서, $^{244}$ Cm의 자발핵분열중성자 수를 분석할 수 있으며 이를 이용하여 사용후핵연료를 계량관리 할 수 있다. 현재 측정시스템에 대한 성능시험등을 수행하고 있는 중이며 향후 DUPIC 연구용 고준위방사성물질취급시설(hot-cell)에 설치할 예정이다.

• Journal of the Korea Society of Computer and Information
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• v.24 no.10
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• pp.101-116
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• 2019

In this paper, we propose a novel behavioral model that explains the use of the military battlefield management system more effectively in the non-voluntary use environment. This study intends to suggest a model based on the Unified Theory of Acceptance and Use of Technology(UTAUT), an extended TAM. Also, it introduces the concept of 'Conative IS use' as a dependent variable that can explain user's behavior more effectively in non-voluntary technology acceptance environment. In addition, we propose the major factors affecting the UTAUT components from the TOE(Technology-Organization-Environment) perspectives, and analyze their effects. In order to validate the proposed model, this study applies PLS(Partial Least Squares) to the survey collected from military personnel. The findings of our study may shed a light on improving the effectiveness of battlefield management information system.

• Journal of Energy Engineering
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• v.13 no.3
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• pp.205-213
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• 2004

Usefulness of an optical fiber was demonstrated by detecting the generation of self-excited combustion oscillations. OH chemiluminescence intensity detected by the optical fiber showed mostly excellent agreement with those obtained by high speed CCD camera measurements when combustion oscillations were strong. Symptoms of self-excited combustion oscillation were also studied in order to predict the onset of combustion oscillation before it proceeded to a catastrophic failure. For the purpose, we have found and proposed unique measures to tell the onset of self-excited combustion oscillations based on the careful statistics of fluctuating properties in flames, such as pressure or omission of OH radicals.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2014.05a
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• pp.177-179
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• 2014

Unlike using smart-phone for music, game, information searching, shopping, using smart-phone for tasks may be forced in the task environment. Therefore, attitude, usefulness, and easy of use of technology on information technology adoption mode can not fully explain using smart phone for tasks. To explain using smart phone for tasks, this paper is based on the theory of task and technology fit(TTF) that TTF influences the usage performance of technology.