• 기술혁신학회지
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• 제8권1호
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• pp.277-295
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• 2005

The objective of the study is to verify the discriminatory power of valuation indexes in predicting IT small and medium sized manufacturing firms' going concern or firms' failure. The result of the study is expected to be useful in loan evaluation, investment decision, internal management decision making and business improvement. The results of study is as follows. First, we find that at least six valuation index elements are significant ex-ante variable which are discriminating between firms' going concern and firms' failure in IT small and medium sized manufacturing firms in various analysis' results. Second, these index elements are composed of 2 indexes-the ability of technology R&D, the efficient strategy of market penetration and six index elements explain 46% of the total variance. This explainable power of these indexed is similar to that of the existing 16 index elements. Finally, we find that the most important success factor of IT small and medium sized manufacturing firms are the ability of technology R&D and the efficient strategy of market penetration.

• 한국IT서비스학회지
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• 제8권4호
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• pp.41-55
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• 2009

Due to the global business environments and severe competitions, SMEs have carried out IS projects for their competitive advantages. However, numerous organizations have faced with difficulties in the IS project management such as large amounts of IT expenses and uncertainties in project implementations. Thus, this study is intended to discover critical risk factors in the IS project management. To achieve this research goal, we have mailed questionnaires to SMEs and SI companies that experienced IS project failures and 63 usual data were collected. The result of analysis with step wise regression showed that 6 factors are related with IS project failures. The study contributes to the literature in two ways. First, this paper empirically identifies IS risk factors for SME manufactures. Second, this research result can be utilized as a checklist for the successful IS implementations. Limitations and future research topics are also discussed.

• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2013년도 제48차 하계학술발표논문집 21권2호
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• pp.405-408
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• 2013

본 연구에서는 기존에 존재하는 제품을 대체하고 보완하는 기능을 가진 새로운 유형의 컴퓨터가 시장에서 받아들여지지 않아 실패하는 요인을 연구하였다. 제품실패의 원인을 소비자가 제품의 가치를 부정적으로 지각하는 것에 두고, 가치 지각에 영향을 주는 요인들을 소비자가 제품을 사용하여 얻게 되는 혜택과 제품을 사용하는데 소요되는 비용으로 구분하여 영향관계를 파악하였다. 넷북을 대상으로 실증 연구한 결과 소비자가 신제품의 가치에 대해 부정적으로 지각하는 것은 사용의도에 부정적으로 영향을 미치는 것으로 나타났다. 그리고 소비자가 새로운 유형의 컴퓨터에 대해 지각하는 비용은 신제품의 가치를 부정적으로 지각하는데 유의하게 영향을 미치는 것으로 나타났다. 다만 소비자가 새로운 유형의 컴퓨터에 대해 혜택을 부정적으로 지각하더라도 이는 가치를 부정적으로 지각하는데 영향을 미치지 않았다.

• International Journal of Quality Innovation
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• 제8권2호
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• pp.20-31
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• 2007

Moral hazard and adverse selection often exist in asymmetric information environment. In this paper, quality investment decision problem is studied under moral hazard. A basic model for quality investment level decision is developed with the supplier as a principal and the buyer as an agent. And then we regard the supplier and the buyer's rational limitations to set up a model when the buyer's quality evaluation and processing activities are hidden. The model is optimized and the results under different backgrounds are discussed and compared. Results show that the buyer's quality evaluation level and processing level are mostly influenced by the supplier's quality assurance payment. Both the supplier and the buyer choose different quality investment levels under moral hazard because of the supplier's payment to the buyer in case of internal failure and external failure.

• Journal of Advanced Marine Engineering and Technology
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• 제38권2호
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• pp.154-161
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• 2014

This research presents results of structural designs and evaluations for 3MW Wind Turbine Blade by FEM analysis. After the GFRP model was designed as a baseline model, failure check by Puck's failure criterion and buckling analysis were accomplished to verify safety of wind turbine blade in the critical design load case. Moreover, applicability of two kinds of carbon spar cap model, was studied by comparing total mass, price and tip deflection to the GFRP model. The results showed that the GFRP model had sufficient structural integrity in the critical design load case, and the carbon spar cap model could be a reasonable solution to reduce weights, tip deflections.

• International Journal of Reliability and Applications
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• 제3권3호
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• pp.147-154
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• 2002

In this paper, we consider the warm standby redundant system(WSRS) which is consisted of an active unit, a standby unit and a switchover device. In addition, the switchover processing is controlled by a control module. The effect of failure of the control module is taken into account to develop our reliability model for the redundant structure. For the performance evaluation of a redundant system with the function of switchover processing which is assumed to cause the increase of the failure rate of the system, some reliability indices, such as availability, average availability, reliability and steady state availability, are considered.

• Industrial Engineering and Management Systems
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• 제9권1호
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• pp.54-59
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• 2010

A two-plan sampling system is proposed for a failure-censored life testing when the lifetime follows a Weibull distribution with known shape parameter. The proposed sampling system is based on a switching rule, for switching between the tightened and the normal inspection levels when lots are submitted for inspection in the order of production or in some other systematic way. The design parameters of the proposed sampling system are determined by the two-point approach considering the producer's risks and the consumer's at the specified acceptable reliability level and the lot tolerance reliability level, respectively. It has been observed that the proposed system requires only a single failure for the observation.

• International Journal of Reliability and Applications
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• 제14권1호
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• pp.41-54
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• 2013

In this paper, cost analysis is conducted using inter-failure interval under renewable warranty subject to imperfect repair for multi-component system. One way to model the imperfect repair is to use the quasi-renewal process (Wang and Pham 1996). Two alternative quasi-renewal processes were suggested by Park and Pham (2010) using quasi-renewal process; first is an altered quasi-renewal process with random variable parameter and second is a mixed quasi-renewal process considering replacement service and repair service, simultaneously. In this study, we use the altered and mixed quasi-renewal processes and develop the warranty cost model to obtain the expected value of warranty cost and to help company make important decisions regarding the warranty policy. Numerical examples are used to demonstrate the applicability of the methodology derived in the paper.

• 대한안전경영과학회지
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• 제19권1호
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• pp.169-179
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• 2017

The size of the market for SCM information systems have globally and steadily increased. And there are businesses that obtained innovative business performance by introducing SCM information systems. However, many businesses have still undergone trial and error in the process to introduce and operate SCM. As external factors including suppliers, customers, etc. and internal factors of businesses have been analyzed to be failure factors of executing SCM information systems, the businesses that try to introduce SCM information systems need to understand possible failure factors and establish the solutions. Therefore, this study tries to verify the diffusion of SCM information systems and effects on bullwhip effects. The study is expected to suggest empirical data that people will refer to the establishment of next counterstrategies according to the lapse of the period that systems are introduced based on theoretical bases related to the diffusion of SCM information systems.

• 디지털융복합연구
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• 제10권9호
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• pp.239-251
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• 2012

이 연구의 목적은 소상공인들의 생존율에 영향을 미치는 창업초기 성과를 높일 수 있는 영향요인들을 탐색적으로 연구하여 소상공인 성공창업을 위한 정책과 방안을 모색하고자 하였다. 소상공인이 인지하는 창업성과(매출액, 순이익, 결과기대감)를 측정하기 위해서 독립변수로 창업가특성(경험, 심리적특성), 창업 준비과정, 매개변수로 자기효능감을 측정하였다. 설문대상은 창업초기 소상공인 427명으로부터 구조화된 자기기입식 질문지를 수집하고, SPSS 18.0 통계프로그램을 활용하여 다중회귀분석기법을 사용하였다. 연구결과는 업종경험, 성취욕구, 위험감수성향, 창업 준비기간은 자기효능감에 유의미한 영향을 미치고, 실패경험과 자기자본비율이 매출액과 순이익에 유의미한 영향을 미쳤으며, 통제위치는 매개변수인 자기효능감을 통해 결과기대감에 유의미한 영향을 미치는 것으로 나타났다. 창업가 특성과 창업 준비과정에 따라서 소상공인의 자기효능감과 창업성과가 달라진다는 것이 발견되었다. 이러한 연구결과를 토대로 이론적 실천적 함의를 논의 하였고, 연구의 문제점 및 향후 정책, 연구를 위한 제언을 제시하였다.