• Asia pacific journal of information systems
• /
• 제10권1호
• /
• pp.61-79
• /
• 2000

ERP system is a very popular tool for pushing management innovation and implementing an integrated information system. The purpose of this research is to investigate the relationship among the structure of production systems, types of implementation strategy, relative importance of competitive goals, information technology and culture level, and the efficiency from using the system. The data for this study were collected from 45 Korean manufacturing firms that have implemented ERP system. Research results confirm that the success factors include the top managements' strategic views and culture level related to new information technology. But the linkage between the structure of production systems and types of implementation strategy is proved to be very weak. Also control effect of types of implementation strategy on the efficiency of the organization is not strongly recognized. A summarized report of other findings is provided as well.

• Journal of Information Technology Applications and Management
• /
• 제14권1호
• /
• pp.1-20
• /
• 2007

IT outsourcing becomes one of the important shills for managing diverse and complex information systems, SIA is considered as an one of the success factors for the successful outsourcing management. Since it helps to establish common goal and provides better visibility of trends and performance, the SLA process must go beyond mere measurement to include a methodology for the ongoing management of service levels, and for the continuous improvement of service activities, functions and processes. Despite SLA is one of the most important skills for the successful outsourcing, few studies have been conducted for academic as well as practical purpose. For this reason, The objective of this study is to develop an SLA's maturity model and empirically demonstrate how SLA's maturity level affects its Performance through SLA's maturity model. The major contributions of this study are in two areas. This study contributes to academicians as well as practitioners. First, from the academic perspectives this study tries investigating the maturity level of the SLA based on empirical data. Second, practitioners can self-test their firms' maturity level using the proposed model. The results of this study show that the SLA's maturity level affected positively SLA's performance. It is founded that the SLA's maturity level had a significant impact on SLA's performance.

• 통상정보연구
• /
• 제12권4호
• /
• pp.25-45
• /
• 2010

The objective of this paper is to review the mechanics of how global e-trade practices can affect a firm's performance. It is well known that the introduction of global e-trade systems can save transaction costs at the macro level. However this study is extended at micro level by determining whether global trade transaction costs influence positively or negatively in exporting firms performances at firm level. A theoretical framework is suggested for determining the usage and performance of global e-trade with the global e-trade barriers. An empirical analysis of South Korean exporting firms has been undertaken. This paper concludes that the global e-trade has yet to overcome the barriers resulting from the transaction costs and asset specificity. In this regard, appropriate action like intensive education and training program should be implemented in order to make South Korea's global e-trade more matured.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제8권7호
• /
• pp.2420-2433
• /
• 2014

Fusing the scores of multibiometrics is a very promising approach to improve the overall system's accuracy and the verification performance. In recent years, there are several approaches towards studying score level fusion of several biometric systems. However, most of them does not consider the genuine and imposter score distributions and result in a higher equal error rate usually. In this paper, a novel score level fusion approach of different biometric systems (dual iris, thermal and visible face traits) based on $Acz{\acute{e}}l$-Alsina triangular norm is proposed. It achieves higher identification performance as well as acquires a closer genuine distance and larger imposter distance. The experimental tests are conducted on a virtual multibiometrics database, which merges the challenging CASIA-Iris-Thousand database with noisy samples and the NVIE face database with visible and thermal face images. The rigorous results suggest that significant performance improvement can be achieved after the implementation of multibiometrics. The comparative experiments also ascertain that the proposed fusion approach outperforms the state-of-art verification performance.

• 한국산학기술학회논문지
• /
• 제14권9호
• /
• pp.4163-4170
• /
• 2013

최근의 무기체계 연구개발에서 실패의 주요인은 요구되는 핵심성능의 미충족과 기술성숙도 부족이다. 이러한 실패의 가능성에 대한 위험관리를 위해서 기술성능측정 관리와 기술성숙도 평가의 수행이 필요하다. 하지만 일반적인 기술성능측정 관리 기법의 적용은 컴포넌트 수준 이하에 대한 측정으로 시스템 통합의 효과를 반영하는 데는 제한이 있다. 한편으로 시스템 통합에 대한 효과를 반영하기 위한 시스템 성숙도 측정 방법이 제시되었지만 성능과 기술성숙도를 분명하게 연계시키지는 못했다. 따라서 본 연구에서는 컴포넌트 수준으로부터 상방향으로 확대하여 시스템 수준에서의 기술적 성능 달성도 평가방법과 함께 시스템 성숙도를 연계하는 시스템 성능 달성도 측정 기법을 제시하였다. 이를 통해 무기체계개발에서 위험관리에 활용할 수 있게 된다.

• 한국산업정보학회논문지
• /
• 제14권4호
• /
• pp.183-197
• /
• 2009

단순히 정보기술에 대한 투자만으로는 조직성과의 성공적 달성을 기대할 수 없으며, 기업이 보유하고 있는 정보기술지식과 기업의 제반 활동에서 정보기술이 활용되고 있는 수준이 중요하다는 인식하에 연구를 시작하였다. 한편, 조직상황에 따라 정보기술 활용수준이 조직성과에 미치는 영향이 달라질 수 있음을 확인하기 위하여 내부 환경특성으로 조직규모와 외부 환경특성으로 환경역동성을 선택하여 조절효과를 살펴보았다. 조직규모는 대기업, 중기업 및 소기업으로 구분하여 차이를 살펴보았다. 85개 기업을 대상으로 실증분석을 실시한 결과 조직규모가 커질수록 정보기술 활용수준이 높아지는 것으로 나타났다. 전체적으로는 정보기술 활용수준이 조직성과에 유의적 영향을 미치는 것으로 나타났으나, 중기업 및 소기업과는 달궈 대기업의 경우는 유의적 영향을 나타내지 못하여 조직규모에 따라 차이가 있음을 보여주었다. 전체적으로 환경역동성이 정보기술 활용수준과 조직성과의 관계에 미치는 조절효과는 유의적이지 못한 것으로 나타났으나, 소기업과 대기업에서 환경역동성이 높은 경우에는 유의적인 조절효과를 보여주었다.

• 대한전자공학회:학술대회논문집
• /
• 대한전자공학회 2002년도 ITC-CSCC -3
• /
• pp.1736-1739
• /
• 2002

The advanced in semiconductor, hardware, and software technologies enables the integration of more com- plex systems and the increasing design complexity. As system design complexity becomes more complicated, System-level design based on the If block and processor model is more needed in most of the RTL level or low level. In this paper, we present a novel approach fur the system-level design, which satisfies the various required constraints and an optimization method of image encoder based on codesign of function, algorithm, and architecture. In addition, we show an MPEG-4 encoder as a design case study. The best tradeoffs between algorithm and architecture are necessary to deliver the design with satisfying performance and area constraints. The evaluations provide the effective optimization of motion estimation, which is in charge of an amount of performance in the MPEG-4 encoder module.

• 한국정보시스템학회지:정보시스템연구
• /
• 제3권
• /
• pp.133-145
• /
• 1994

Performance evaluation is essential for the successful management and operation of MIS. The more MIS grows and relevant investment enlarges, the more performance evaluation grows in importance. However, MIS managers as well as top management still have difficulty in evaluating the performance of MIS. This arises from various reasons, such as the specialty of MIS, diversified influences of MIS, multidimensionality of evaluation items, and the difference between evaluation levels. In this paper, MIS is understood in a broad sense. MIS's scope is of a very wide range from each application system to system innovation view. The MIS should support the firm's objectives, and, consequently, MIS evaluation should be implemented at corporate level, not merely at application system level. The most critical problem of MIS evaluation is that a systematic frame covering various viewpoints and factors of MIS evaluation does not exist. Not a single measure covers all aspects of MIS evaluation. To help resolve this problem, this paper proposes an hierarchical approach for practical use that includes most aspects of evaluation approaches from previous studies, and, furthermore, emphasizes the evaluation of strategic aspects of MIS.

• 대한전자공학회:학술대회논문집
• /
• 대한전자공학회 2002년도 ITC-CSCC -1
• /
• pp.149-151
• /
• 2002

We had been developing the variety of parallel processing systems in order to improve the processing speed of visual media applications. These systems were using multi-access memory system(MAMS) as a parallel memory system, which provides the capability of the simultaneous accesses of image points in a line-segment with an arbitrary degree, which is required in many low-level image processing operations such as edge or line detection in a particular direction, and so on. But, the performance of these systems did not give a faithful speed because of asynchronous feature between MAMS and processing elements. To improve the processing speed of these systems, we have been investigated a pipelined parallel processing system using MAMS. Although the system is considered as being the single instruction multiple data(SIMD) type like the early developed systems, the performance of the system yielded about 2.5 times faster speed.

• Asia pacific journal of information systems
• /
• 제15권2호
• /
• pp.121-148
• /
• 2005

This study focuses on MRO e-Marketplace and attempts to research how companies select the structure of e-Marketplace governance and how it influences purchasing performance. Furthermore, a longitudinal study is conducted to analyze the dynamic relationship between variables in our research model. The research gives the following results. First, as the utilization level of e-Marketplace increases, the level of relational exchange between purchasing company and e-Marketplace increases. The increased utilization level enhances purchasing efficiency rather than reducing purchasing price. Secondly, as the level of relational exchange between purchasing companies and e-Marketplace increases, system integration increases, whereas supply externality decreases. Accordingly, system integration improves purchasing efficiency, whereas the low supply externality does not help lower purchasing price. Third, compared to the initial growth stage, the stable stage of e-Marketplace has the significantly increased level of relational exchange and purchasing efficiency through system integration, rather than the reduction of purchasing price by supply externality.