• 대한용접접합학회:학술대회논문집
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• 대한용접접합학회 2002년도 춘계학술발표대회 개요집
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• pp.161-163
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• 2002

An implicit finite element implementation for Leblond's transformation plasticity constitutive equations, which are widely used in welded steel structure is proposed in the framework of parallel computing. The implementation is based upon the updated Lagrangian formulation. We examine the efficiency of parallel compuatation for the finite element analysis of a welded structure using multi-frontal solver.

• 대한용접접합학회:학술대회논문집
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• 대한용접접합학회 2003년도 춘계학술발표대회 개요집
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• pp.210-212
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• 2003

Finite element analysis of welding processes, which entail phase evolution, heat transfer and deformation, is considered in this paper. Attention focuses on numerical implementation of the thermo-elastic-plastic constitutive equation proposed by Leblond et al in consideration of the transformation plasticity. Based upon the multiplicative decomposition of deformation gradient, hyperelastic formulation is employed for efficient numerical integration, and the algorithmic consistent moduli for elastic-plastic deformations including transformation plasticity are obtained in the closed form. The convergence behavior of the present implementation is demonstrated via a couple of numerical example.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 제36회 하계학술대회 논문집 B
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• pp.1419-1421
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• 2005

This paper presents theoretical and practical details about the design, implementation, and performance of a series resonant dc-to-dc converter using planar magnetics. Results of sinusoidal analysis are used to predict the voltage gain and conversion efficiency. The performance of a prototype converter is presented including the efficiency measurement and theoretical loss breakdown.

• 디지털융복합연구
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• 제11권8호
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• pp.119-125
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• 2013

최근에 기업에서는 전략경영에서의 업무효율을 증진시키기 위하여 비즈니스 인텔리젼스 시스템의 구축에 노력을 기울이고 있다. 본 연구에서는 비즈니스 인텔리젼스 시스템의 구축에 영향을 미치는 요인들을 분석하기 위해서 기존에 비즈니스 인텔리젼스 시스템을 구축하여 활용하고 있는 기업을 대상으로 시스템의 구축에 중요한 영향을 미치는 요인들에 대한 설문을 실시하였다. 이를 검증하기 위하여 요인분석(FA)을 실시하였다. 요인분석을 통해서 핵심 구축지표들의 그룹화 된 요인을 도출하였고, 이들 요인들 사이의 관계를 구정식을 이용하여 분석하였다. 연구 결과에 의하면 기업이 사용 중인 정보시스템의 기능과 경영전략이 비즈니스인텔리젼스 시스템의 구축의도에 긍정적인 영향을 미치는 것으로 연구되었다. 본 연구의 결과는 효과적으로 비즈니스 인텔리젼스 시스템의 구축하고자 하는 기업에게 방향을 제시하는데 공헌을 할 것이라고 생각한다.

• 보건행정학회지
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• 제11권4호
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• pp.54-69
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• 2001

This study was conducted to assess factors associated with the degree of performance of qualify improvement(QI) activities. A mailed questionnaire survey was conducted between September 15 and October 30, 2000, with the staffs being charge of QI at each of the hospitals with 400 beds or greater. Of the 108 hospitals eligible for inclusion in our study, 79 participated, yielding a response rate of 73.1%. After excluding 12 hospitals that did not perform any QI activities, 117 responses from 67 hospitals were used for the analysis. Using the Malcolm Baldrige National Quality Award Criteria(MBNQAC), perceived performance of QI was measured in terms of the improvement of the quality of clinical practice, clinical supporting department, administrative procedure of receiving care, customer satisfaction, efficiency and standardization of work process. Factors evaluated for the association were the extent of QI implementation, compliance to 5 QI principles, participation of hospital CEOs, budget allocation, history of QI, and bed size. Path analysis was performed to assess the relationship between QI performance and these factors. Major findings of this study are as follows. Hospitals showing higher degree of QI implementation (path coefficient=0.5967, p<0.001)) and better compliance with the basic principes of QI(0.5736, p<0.05) tended to achieve better performance. Path analysis results showed that interest and participation of hospital CEOs(0.1954, p<0.05) and compliance with the basic principes of QI(0.4028, p<0.0001) indirectly affected the outcomes of QI by influencing the intermediate variable of the level of QI implementation. This study results suggest that having employees have a good orientation of the basic concept and principes of QI through relevant training be the most important requirement to achieve better outcomes from QI activities. In addition, to educate leaders of hospitals the need of active implementation of QI is important to encourage their participation and draw strong support for QI programs.

• 대한공업교육학회지
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• 제44권1호
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• pp.190-208
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• 2019

이 연구는 중앙교육연수원에서 진로진학상담교사를 대상으로 하는 진로교육 직무연수의 현업적용도를 확인하기 위해서 수행하였다. 연구의 목적을 달성하기 위해서 연수 이수 3개월 후 시점에서 이수자의 현업적용도 사전-사후 설문조사, 성공사례기법(SCM), 기대회수효과(ROE)를 알아보았다. 이 연구는 2018년 7월 중앙교육연수원의 직무연수를 이수한 진로진학상담교사 136명을 대상으로 실시하였으며, 현업적용도 조사 연구와 연수에 대한 질적 분석으로 수행되었다. 연수 이수자 136명 중 현업적용도 조사에 응답한 인원은 75명, 성공사례기법에 참여한 인원은 4명이다. 중앙교육연수원에서 2018년에 추진한 진로진학상담교사 대상의 직무연수 현업적용도의 평균값은 5점 만점에 4.17점으로 비교적 높은 점수로 확인되었다. 성공사례기법은 성공 사례자와 실패 사례자를 인터뷰하여 분석하였다. 직무 적용에 따른 행동 변화는 기획자 역할이 가장 컸고 교수자 역할, 진로교육자 역할, 학습자 역할 순이었다. 또한, 사례 분석은 면담자들이 현업적용에 대한 동기, 역량, 환경적 측면에서 의견을 제시하였다. 그리고 기대회수효과 측면에서 긍정적 평가가 85.3%로 매우 높았고, 순 추천 고객지수가 .85로서 참가자들은 다시 연수 참여 의지를 보일 정도로 만족도가 높았다. 이 연구 결과를 기초하여 추후 연구를 제언하면, 새로운 연수 방법과 추가적인 요인분석에 관한 연구가 필요하다.

• Journal of Information Technology Applications and Management
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• 제12권1호
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• pp.157-172
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• 2005

Recently, location-based service (LBS) is a hot issue in the field of computer applications. So many papers introducing new techniques of implementing a LBS and new application fields of LBS have been published recently. However, to the best of our knowledge, none of them discusses feasibility test in the prior to the implementation. The importance of a feasibility test for a design prior to the implementation cannot be overemphasized. This paper presents a method of feasibility test for a LBS design. Our method performs three steps. At the first step, we build a Petri net model of the LBS system which is depicted in natural language. The second step is to analyse the Petri net to find errors and flaws in the design. We also improve the Petri net model by fixing the errors and flaws in this step. A feasibility test is the third and final step. In this step. we verify if the design satisfies the user's requirement in the senses of quality of service (QoS) and of minimizing the implementation cost. The third step is performed in the manner of mathematical analysis of the Petri net.

• Asia pacific journal of information systems
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• 제15권1호
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• pp.81-113
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• 2005

IT has affected the hospital management via information systems and multimedia systems such as hospital information systems(HIS) and Order Communication System(OCS). A large number of researches have been done on the topic of success factors of information systems implementation, but a few on the topics of hospital information systems. Thus in this study, the success factors of the military hospital information systems implementation was analysed. To this end, a number of previous researches were reviewed and about 71 items of success factors were deduced. For doing empirical analysis, a questionnaire with 71 items was prepared and sent to proper organizations. The statistical analysis such as factor analysis was applied to about 400 of them returned. The six success factors and 20 sub success factors were resulted from factor analysis. The six success factors include systems management factor, technology and organization factor, the efficiency of IT department factor, technology application factor, outsourcing factor and environment factors. This study finds the outsourcing and environment factors are very important factors as much as other success factors which previously were mentioned.

• 경영과학
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• 제26권3호
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• pp.205-221
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• 2009

Countries around the world are actively investing in development and industrial application of RFID, a new wireless communications technology widely perceived as a next-generation growth engine with the potential for creation of new business value. In this paper, we empirically study factors influencing the acceptance of RFID by stage of introduction, to contribute making policies aimed at stimulating demand for this technology and accelerating its penetration. The process of acceptance of RFID was divided, in this paper, into three stages: perception, adoption and implementation, and influence factors, both Internal and external to an organization, drawn from existing literature, are analyzed. A conceptual model comprising internal influence factors, including technical, organization and economic factors, and external factors related to environment and this model was tested through structural equation analysis. To obtain data for empirical analysis, we surveyed public institutions and general companies that are potential users of RFID. The data thus collected were analyzed to determine factors influencing the acceptance of RFID by stage, and practical implications for the RFID promotion policy at the level of demand creation and industrial application were derived from the results of this analysis.

• Safety and Health at Work
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• 제12권1호
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• pp.42-50
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• 2021

Introduction: Despite huge investments in new technology and transportation infrastructure, terrible accidents still remain a reality of traffic. Methods: Severe traffic accidents were analyzed from four prevailing modes of today's transportations: sea, air, railway, and road. Main root causes of all four accidents were defined with implementation of the approach, based on Flanagan's critical incident technique. In accordance with Molan's Availability Humanization model (AH model), possible preventive or humanization interventions were defined with the focus on technology, environment, organization, and human factors. Results: According to our analyses, there are significant similarities between accidents. Root causes of accidents, human behavioral patterns, and possible humanization measures were presented with rooted graphs. It is possible to create a generalized model graph, which is similar to rooted graphs, for identification of possible humanization measures, intended to prevent similar accidents in the future. Majority of proposed humanization interventions are focused on organization. Organizational interventions are effective in assurance of adequate and safe behavior. Conclusions: Formalization of root cause analysis with rooted graphs in a model offers possibility for implementation of presented methods in analysis of particular events. Implementation of proposed humanization measures in a particular analyzed situation is the basis for creation of safety culture.