• The KIPS Transactions:PartD
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• v.8D no.6
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• pp.861-870
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• 2001

Since most of studies for information efficiency measurement of healthcare organizations have mainly focused on searching a measuring standard used for performance of informatization and each researchers subjective standard having been used, they can not be easily measured and objective. This study showed a possibility that efficiency measurement of healthcare organization can be performed by solving a problem related to objectiveness, which may occur in measuring many organization with many measuring items, with DEA (data envelopment analysis). For proving this possibility, efficiency evaluation and analysis for information resources utilization of domestic tertiary healthcare organizations have been performed by using DEA model. As a result, DMU (decision making unit) having efficiency rate of 1 will be evaluated that output is higher than input and information resources are being used efficiently, but on the other hand, DMU having efficiency rate of below 1 will be evaluated that output is lower than input and information resources are being used inefficiently, which is required to be improved.

• Korean Journal of Culture and Social Issue
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• v.19 no.1
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• pp.1-17
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• 2013

The present study aimed to investigate the discrimination between employee voice and silence behavior in measurement: it is silence behavior the absence of voice or not? It was examined using confirmatory factor analysis. Five measurement models based on the suggestion of Pinder & Harlos(2001) and Van Dyne, Ang, & Botero(2003) were compared. Additionally, the hierarchical multiple regression analysis was conducted for examining the incremental validity of silence behaviors over voice. A total of 204 employees who worked with their own supervisor were surveyed. Results indicated that silence behavior could be a separate construct from voice. Findings also showed that silence behaviors could be distinguished by the level of concreteness in definition, difference in content of motivation and have the incremental validity over voice in only acquiescent Silence. From these results, the theoretical implications of findings, limitations, suggestions for future research were discussed in discussion.

• Proceedings of the Korea Association of Information Systems Conference
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• 2004.05a
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• pp.88-95
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• 2004

가상강좌에 대한 사회적 관심이 높아지고 각종 교육기관에서 다양한 방식의 서비스를 제공하고 있음에도 가상강좌의 효과 즉, 가상강좌 수강생들의 만족을 측정하는 도구의 개발은 상대적으로 미흡한 실정이다. 특히 초기의 가상강좌가 정보기술을 이용한 실험적인 형태에서 벗어나 기존의 오프라인 교육을 대치할 수 있는 중요한 도구로 대두되고 있다는 점을 감안할 때 가상강좌의 효과를 측정하기 위한 도구는 좀 더 종합적인 접근 방식이 요구되고 있다. 본 연구에서는 가상강좌 특히 인터넷을 기반으로 하는 가상강좌의 네 가지 요소인 학습관리시스템, 강의 컨텐츠, 학습에 대한 인적 서비스 그리고 학생 자신의 심리적 상태 등을 고려한 종합적인 접근에 의한 가상강좌 만족 모형을 제시하고 그 측정도구에 대한 타당성을 검증하도록 한다. 이를 위해 정보기술 사용 측면, 정보품질적 측면, 서비스 관리적 측면 그리고 사회심리학적 측면에서 가상강좌 측면에 만족을 주는 이론적 변수 및 측정도구를 제시하고 측정도구에 대한 타당성을 실증적으로 검증한다.

• Management & Information Systems Review
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• v.29 no.3
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• pp.97-121
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• 2010

Many enterprises introduce CRM as a new process accessible to customers. And BSC forces managers to focus on balanced measures of business performance that are most critical. The purpose of this study is to find out the determinants of CRM adoption through the analysis which examine the relationship among the key success factors, and business performance using the BSC perspective. This study also gives the suggestion for the effective CRM implementation in the korean companies. This study has been conducted using the data collected from 115 companies implementing CRM. By analyses of the questionnaires, empirical results shows that the implementation of CRM has positive effect on business performance with 4 perspectives of BSC. The contribution of this study is that it provides a conceptual framework and empirical evidence of the causal relationship between key success factors, and business performance with 4 perspectives of BSC concept. This study showed that more consideration are essential to obtain balanced business performance for companies with CRM adoption plan.

• Management & Information Systems Review
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• v.33 no.5
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• pp.249-260
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• 2014

This paper explores the relationship between firm-specific volatility and some firm characteristics such as size, the market-to-book ratio of equity, PER, PBR, PCR, PSR and turnover in KOSDAQ market. In addition, I investigate whether portfolios with difference to realized range-based volatility and firm-specific volatility have different investment performance using CAPM and FF-3 factor model. The main findings of this study can be summarized as follows. First, firm-specific volatility have mostly positive relationship between firm-specific volatility and some firm characteristics. Second, this study found that realized range-based volatility and firm-specific volatility are positively related to expected return. It means that portfolios with high idiosyncratic volatility have significantly higher expected return than portfolios with low firm-specific volatility.

• The Korean Journal of Financial Management
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• v.15 no.2
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• pp.183-210
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• 1998

1975년 1월${\sim}$1996년 12월까지의 기간에서 월별주가수익률 자료를 이용하여 반대투자전략의 경제적 유용성을 검증한 결과 다음과 같은 사실을 발견할 수 있었다. 첫째, 보유기간비정상수익률 사이의 시계열상관분석에서는 18개월 이내의 기간에서 통계적으로 유의적인 시계열상관성을 발견하지 못하였으나 24개월 이상의 기간에서는 통계적으로 유의적인 부(-)의 시계열상관성이 존재하였다. 한편 36개월의 보유기간비정상수익률을 측정하는 경우 시장조정수익률모형보다 시장위험조정수익률모형에서 더 높은 시계열상관성이 관찰되었다. 둘째, 표본증권을 대상으로 하여 시장조정수익률모형에 따라 형성기간의 보유기간비정상수익률을 측정하여 반대투자전략을 수행하는 경우 검증기간의 보유기간비정상수익률이, 패자포트폴리오에서는 1% 수준에서 통계적으로 유의적인 31.1%이었으나 승자포트폴리오에서는 비유의적인 1.1%이었다. 그러나 포트폴리오를 운용하는 과정에서 부담해야 하는 거래비용을 공제하는 경우 36개월간의 보유기간비정상수익률이 21.1%인 것으로 나타나고 있어 경제적인 유용성면에서 한계가 있는 것으로 나타났다. 셋째, 시장조정수익률모형보다 시장위험조정수익률모형이 승자 및 패자포트폴리오의 구성종목에 대한 선별력이 높은 것으로 나타났다. 시장위험조정수익률모형을 이용하는 경우 36개월간의 보유기간비정상수익률이, 패자포트폴리오에서는 1%수준에서 유의적인 120.9%이었으며, 승자포트폴리오에서도 1% 수준에서 유의적인 -36.5%를 보임으로써, 시장조정수익률모형에 기초한 반대투자전략과 비교할 때, 경제적 유용성이 현저히 높은 것으로 나타났다. 넷째, 검증기간에서의 위험변화가 반대투자전략의 투자성과에 상당히 영향을 미치는 것으로 나타났다. 차익포트폴리오에서 위험변화를 고려하는 경우 36개월간의 거래비용공제전 보유기간비정상수익률이 157.4%에서 67.8%로 줄어들었다.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.28 no.6B
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• pp.683-690
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• 2008

The objectives of this study are to provide an observation-based urban flood prediction model and to evaluate their performance on a restored Cheonggye stream. The study area, which has its own unique hydrologic and flooding conditions that can be characterized the standard of flood occurrence by watergate opening and walk lane inundation, measured stream discharges at the 5 sites and watergate opening and walk lane inundation through the main stream since 2006. This study derived the relationship between precipitation intensity and watergate opening and walk lane inundation time by using the observations of 2006 and verified their performance on 2007 flood events. The result showed that the coefficients of determination are ranged on 0.57-0.75, which would be acceptable if considering the complexity of the area and the proposed model simplicity. It also suggested the continuous observation of these properties is required for further improvement of the models.

• Journal of the KSME
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• v.19 no.2
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• pp.98-105
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• 1979

이상의 고압중스트레인 측정실험으로부터 다음과 같은 결론을 얻었다. (1) 고압중에서 스트레인을 측정할 경우, 압력효과스트레인이 생기므로 스트레인의 지시치를 보정할 필요가 있다. (2) 고압 효과스트레인은 같은 종류의 게이지에 있어서도 흩어짐이 있으나 흩어짐의 폭은 압력효과스트 레인의 값보다 작다. 특히 300 기압이상에서는 브릿지의 평형을 취해가지고 측정하며는 이 흩 어짐은 한결 작아진다. (3) 고압수중에서 측정 할 경우, 대후론, 시리콘고무, 이중피복선을 도선 으로 하여 사용하고, 게이지의 부분은 시리콘고무코우팅을 되도록 두껍게 하며는 3,000 기압 정 도까지의 수압중에서도 절연저하를 초래하지 안고, 스트레인측정을 할 수가 있다. (4) 상기의 절연방법은 도선인출부에도 적용할 수 있다. (5) 원통형 하우징 모형의 내외면의 스트레인를 측 정한 결과, 유한요소법해석결과의 타당성을 확인 할 수가 있었다. 본실험은 1974년도 일본통산 성공업기술원에서 위탁받아 동지종합연구소에서, [대식도 원읍조작해저석유굴삭장치의 개발]에 관한 연구성과의 일부와 Waterloo 대학의 G.S. Kular 교수연구실의 연구결과임을 밝혔다.

• Journal of Korea Technology Innovation Society
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• v.9 no.3
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• pp.538-557
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• 2006

The interest in performance evaluation of public R&D has been dramatically increased. Many tries have been made to measure and to evaluate the quality of research performance. Quantitative indicators are considered increasingly important for this purpose. The most widely used are the number of research articles, citations and Impact Factors. However, such indicators are strongly discipline-dependent, and hence they should be used with careful attention. In this study we tried to provide quantitative evidence on the latent problems of discipline-dependent indicators. We also tried to provide a set of quantitative indicators for evaluating publications as a result of research activities. We put our focus on the quantitative indicators reflecting the characteristics on disciplines and provided several indicators with guideline on their usage.

• The Journal of the Korea Contents Association
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• v.13 no.12
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• pp.389-401
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• 2013

The objective of this study is to devise and empirically validate a model in which information characteristics influence the success of SCM system as assessed by the Information Capabilities method. The four factors examined in this study include Information Quality, Operational Information Sharing, Strategic Information Sharing, Information Capabilities. The research model was analyzed by the structural equation modeling(SEM) technique, supported by SPSS 21 and SMART-PLS 2.0. The results of this study can be summarized as follows. The study confirmed the presence of positive influence of information quality on operational information sharing, strategic information sharing and IO. And, information sharing, as expected, had a significant impact on SCM performance as assessed by the IO method. A major contribution of the study is that it provides empirical evidence of the relationships that have been presumed to exist between information characteristics and information performance of SCM system. Also, the study provides both researchers and practitioners a solid foundation for future studies and practice for more successful implementation of SCM system.