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국제항공운송회사의 비용효율성 연구: 국제비교를 중심으로
여규헌 ( Kyu Hun Yeo ),이영수 ( Young Soo Lee ) 한국항공운항학회 2007 한국항공운항학회지 Vol.15 No.4
The purpose of this study is to analyze the technical and cost efficiency of Air Transport Industry on Global strategic alliances. In particular, this study develops Stochastic Frontier Approach for accurate judgement. Based on 20 major international airline corporations related with strategic alliances during the period 1995-2001, we find that alliances make a significant contribution to efficiency. On the other hand, it is found that the level of contribution to efficiency is different according to alliances. These results also changed greatly between pre- and post- Asian financial crisis period.
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양지윤(Ji-youn Yang),여규헌(Kyu-Hun Yeo) 한국산업정보학회 2008 한국산업정보학회논문지 Vol.13 No.2
본 연구는 사용자가 급속히 증가하는 모바일 뱅킹 서비스 품질 측정을 통해 도출된 주요 요인을 기반으로 모바일 뱅킹 서비스의 전략을 도출하였다. 이를 위해 SERVQUAL 모형과 중요도-성과 도구를 활용하였다. 우선, 선행연구를 통해 모바일 뱅킹 서비스의 주요 요인을 SERVQUAL 모형을 이용해 사용자 만족에 영향을 주는 보증성, 고객지향성, 유형성, 신뢰성의 4가지 차원으로 분류했다. 이 요인들을 바탕으로 전략을 도출하기 위해 중요도-성과 분석을 실시하였다. 분석결과 사용자 만족에 가장 영향력이 높은 보증성 차원은 기대치는 높은데 비해 실제 성과가 낮아 중점개선부분으로, 고객지향성 차원은 기대와 성과가 모두 낮아서 만족도를 제고할 필요가 있었으며, 유형성 차원은 사용자가 실제 얻는 성과 수준은 높으나 기대치 수준은 그에 마치지 않아서 현재 수준 유지전략을, 신뢰성 차원은 성과도 높고 기대도 높아서 지속적 관리가 요구되는 전략이 필요함을 확인하였다. This research developed a strategy for mobile banking services based on the important factors deduced from quality assessment of mobile banking service that is experiencing rapid growth of user. SERVQUAL model and importance-performance tool were used. First, SERVQUAL model uses the important factors of mobile banking service selected from literature reviews. As a result, four dimensions that affect user satisfaction are found; assurance, customer orientation, tangibility, and reliability. Second, importance-performance analysis is to develop the strategy using the four factors. The final results revealed that assurance dimension had the strongest influence on user satisfaction. Assurance dimension of high expectation and yet low real performance needs immediate improvement. Customer orientation dimension of low expectation and performance should be reconsidered definition of satisfaction. On the other hand, tangibility dimension of higher performance than expectation is simply to maintain current level. Reliability dimension of high expectation and performance is recommended consistent management.
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이영수 ( Young Soo Lee ),여규헌 ( Kyu Hun Yeo ) 한국질서경제학회 2009 질서경제저널 Vol.12 No.1
This paper analyses how market concentration of Korean banking industry changed and influenced to competition since 1997 Asian financial crisis with long-term view. With Bank data from FY 1998 to FY 2007, we use CR(Concentration Ratio) and HHI (Herfindalhl-Hirschman Index) index in order to access to market concentration rate. We divide our whole sample period into two sub-periods: 1998~2002 period, and 2003-2007 period. Using H-statistic indicator suggested by Panzar-Rosse for the market structure analysis, our empirical results suggest that Korean banking industry was in monopolistic competition in overall periods. Both CR index and HHI index tell Korean banking industry is becoming more oligopoly. However when we change financing variables, the results are pretty different. Therefore we could say when we analyse market structure by P-R model, handling variables must really sensitive and reasonable. On this paper, we cannot assure P-R model as a definite analysis proof of market structure because of robustness.
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이영수 ( Young Soo Lee ),여규헌 ( Kyu Hun Yeo ) 한국항공운항학회 2008 한국항공운항학회지 Vol.16 No.3
This paper analyse the economic inducement effects of aviation industry using Input-Output Model. For measuring economic inducement effects of aviation industry on korean economy, this paper divides air transport industry as two-manufacturing industry and service industry. we also use Input-Output Table of year 1990 through 2003 from Bank of Korea. Empirical results tells that aviation manufacturing industry have high product inducement effects to national economy although its low value-added coefficient such as 0.486 for aviation manufacturing industry and 0.447 for aviation service industry. public R&D doesn`t have much effect to each of aviation industries.
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한국 상장기업의 부채구조 연구: IMF 금융위기 전후비교를 중심으로
이영수 ( Young Soo Lee ),최종일 ( Jong Il Choe ),박순찬 ( Sun Chan Park ),여규헌 ( Kyu Hun Yeo ) 한독경상학회 2007 經商論叢 Vol.25 No.4
지난 1997년 금융위기는 기업들의 과도한 차입경영과 높은 부채비율이 한국경제의 근본원인으로 제시된 바 있다. 본 연구는 한국 상장 제조기업의 부채비율의 변화 추이와 그 결정요인을 지난 1990년 이후 2006년 현재까지 17개년의 기간을 걸쳐 분석함으로써 금융위기 전후의 부채구조 변화를 종합적으로 파악하는 데에 그 일차적 목적을 두었다. 총부채비율은 기간별 구조로 나누어 각각 장기 부채비율과 단기부채비율로 구분하여 분석하였으며, 결정요인으로는 기업규모, 성장률, 유형고정자산, 총자산수익률, 영업위험, 이익변동률 등을 사용하였다. 분석결과 대기업과 중소기업 모두 부채비율이 금융위기 이후 크게 줄어드는 것을 확인하였는데 이는 정부의 시책이 올바르게 적용되었기 때문으로 판단된다. 결정요인별 분석에서는 기업규모와 수익성 등에서 정보비대칭이론 및 자본조달순위이론이, 영업위험과 이익변동률에서 절충이론이 지지를 받았으며, 기간별 부채구조분석을 통하여 자산만기대응가설이 각기 지지를 받는 것을 확인할 수 있었다. The purpose of this study is to investigate the change of leverage ratio and determinants of it. There are a lot of empirical studies that Korean Industry innovated since 1997 financial crisis, but almost all of these papers have a little limits about analyzing sample years or corporations. Although 1997 financial crisis has had so important meaning to Korean Industry, it could not be analyzed systematically. On this paper, we tried to examine how leverage ratio changed and what makes it different from FY1990 to FY2006 listed on KSE(Korean Stock Exchange) corporations. Based on a review of the literature, there are two main Capital Structure Theory for this study. One is Pecking Order theory insisted by Myers(1984), Myers and Majluf(1984), the other hypothesis is Static Trade off Theory. This paper hypothesized six factors could have some determinant to leverage. We find that all corporations declined their total leverage ratio after financial crisis period. we discerned it as Korean Government policy and corporation strategy changed well. With 500 employees, KSE corporations divided into two groups big and small company. The results show that Big company group has more leverage ratio than small one, so we could guess it as big corporations do debt financing more overly than small group. Using Fixed Effect Model by balanced panel data, the coefficient of ROA and Firm Size variables has almost all negative(-) with leverage. These results make assure that these determinants support Pecking Order Theory. On the other hand, Trade-Off Theory was supported by Earning Volatility and Business Risk. It could guess from Earning Volatility has negative(-) coefficient with leverage, and as same as Business Risk. Analyzing Before and After crisis, Firm Size variables has positive(+) coefficient to short-term liabilities, negative(-) with long-term liabilities. Tangible Assets are opposite to Firm Size. With these results, this paper also proved Korean Manufacturing corporations support Maturity matching hypothesis.
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