• 제목/요약/키워드: JEL classification

검색결과 12건 처리시간 0.025초

Fractional Integration in the Context of Periodicity: A Monte Carlo Experiment and an Empirical Study

  • Gil-Alana Luis A.
    • Communications for Statistical Applications and Methods
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    • 제13권3호
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    • pp.587-605
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    • 2006
  • Recent results in applied statistics have shown that the presence of periodicities in time series may influence the estimation and testing of the fractional differencing parameter. In this article, we provide further evidence on the issue by using several procedures of fractional integration. The results show that in the presence of periodicities, the order of integration can be erroneously detected. An empirical application in the context of seasonal data is also carried out at the end of the article.

The empirical analysis of the growth rate on Small and medium size Enterprises(SMEs) in Korea

  • Han, Jung-Hee
    • 벤처창업연구
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    • 제1권1호
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    • pp.105-125
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    • 2006
  • This paper relates recent empirical research on the growth. Smaller and younger firms have been growing more quickly than larger and older firms, thus, generating proportionately more new jobs. It is not difficult to understand why small and medium firms receive so much attention. Because SMEs provide about 80 percent of private sector employment so SMEs performance is an important economic and social factor. Despite this, they are subject to higher risk and mobility than those at the large firms. This paper is analyzes the relationship between firm growth measured as growth in employment, sales and production and firms age, size and R&D investment. The growth and its relationship with the determinants is linked to industrial policy in Korea. Empirical results are based on an unbalanced panel data covering period 1999-2002. Results show significant relationship between growth, size and age of firm.

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The Impacts of Technology Transfer on Productivity Growth of Firms based on Malmquist Productivity Index

  • Han, Jaeseung;Kwon, Youngkwan;Lee, Sang-Yong Tom
    • Asia pacific journal of information systems
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    • 제26권4호
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    • pp.542-560
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    • 2016
  • This study determines whether or not firms can achieve high productivity growth through external technology acquisition. It also identifies the key factors affecting adopting firms' productivity growth by employing the Malmquist productivity index (MPI) methodology, which features computational ease, low data dependency, and decomposition of productivity growth into technical efficiency change and technical change. Results showed that the effects of productivity growth arising from technology transfer became stronger over time. Moreover, patent transfer guaranteed firms' productivity growth, but no evidence was found that factors such as age and size could increase productivity. Finally, cultural similarity could be another factor conditioning the effectiveness of technology transfer in the productivity of adopting firms.

Diffusion of ICT from the view of ICT generation: The experience in the UK during the 1980s

  • Hwang, Gyu-hee
    • 한국기술혁신학회:학술대회논문집
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    • 한국기술혁신학회 2001년도 춘계학술대회:발표자료
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    • pp.205-242
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    • 2001
  • This paper aims to provide a better understanding about how Information and Communication technology (ICT) has diffused. The investigation is conducted with the consideration of ICT evolution in terms of technological change and usage pattern. The definition used is presented as 'the ICT is a process of convergence of technologies between information-processing and information-transforming technologies, mainly due to the advent of microelectronlcs'. After examining technological changes of ICT, the diffusion path of ICT is traced through the usage ratio in total input and/or investment based on Input-Output tables (I-O). It shows that the evolution of ICT from the change of usage pattern is an up-and-down usage pattern rather than a uni-modal usage time path. With this recognition, the diffusion index is prepared. JEL classification : C43, L63, O33.

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한국 주요 어종의 시장수요와 개인수요의 비교분석 (Comparative Analysis of Market Demand and Individual Demand for Major Fish Species in Korea)

  • 박환재
    • 수산경영론집
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    • 제43권1호
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    • pp.35-48
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    • 2012
  • Inverse demand models are well established as market demands in theory and practice of the existing literature. However, the derivation and its interpretation of individual demands from the market demands are not well known in the literature. This paper analyzes the fish market in Korea by the inverse demand model and shows how we deduce the consumer's responses from the market responses when the markets determine the prices by the quantities demanded. It illustrates empirically how this can be done applying to the korean fish market data. The empirical results show that all fishes are price inflexible and mackerels and hairtails are scale flexible in the market demand while mackerels, hairtails, and croakers are price elastic and mackerels and hairtails are income inelastic in the individual demand. The methodology and empirics used in the paper will make a contribution to the existing literature especially for the purpose of recovering consumer's demand from the market demand, thus implementing the policies to administer the fish markets.

OECD 국가들의 건강수준 결정요인 (The Determinants of Population Health in OECD countries)

  • 최병호;남상호
    • 보건행정학회지
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    • 제20권1호
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    • pp.1-18
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    • 2010
  • This article examines social determinants of population health in OECD countries, where life years, infant mortality, and PYLL are used as proxy variables of health. The unit of analysis is a country which is the OECD affiliate. A panel regression estimation is chosen as a method, using OECD Health Data. The results are: the increasing national health expenditure affected positively to improve population health. Education was rather a significant determinant of health than income level. The government direct investment for public health did not contribute positively to enhance population health. The expansion of health care coverage was working positively for improving health, but with a time lag. The supply of doctors was a most influential determinant of health. In case of Korea, the coverage expansion of health care was the most important determinant of health. The supply of doctors was, however, not a positive factor for better health, which is different result with the case of OECD countries.

신경망 접근법을 이용한 회계자료와 시장자료의 미래예측력 비교 (A Neural Network Approach to Compare Predictive Value of Accounting Versus Market Data)

  • Kim, Choong-Nyoung;Jun, Sang-gyung;Kinsun Tam
    • 지능정보연구
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    • 제10권1호
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    • pp.77-91
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    • 2004
  • 기업파산예측에 대한 기존연구는 회계자료를 통해 추출한 재무비율 (부채비율, 이자상환율 등)을 이용한 분석에 의존하였다. 본 논문은 기업파산을 예측함에 있어서 자본시장자료를 이용한 정보가 어떠한 유용성을 지니는지를 분석하고, 자본시장자료와 회계자료 간의 상대적 우월성을 비교하였다. 비교분석을 행함에 있어서 신경망 접근법을 이용함으로써 모형 의존성을 회피하고자 하였다. 실증분석결과에 의하면 자본시장자료와 회계자료 모두 기업파산을 예측하는데 유용한 정보를 제공하고 있으며, 어느 자료가 상대적으로 우월하다고 유의하게 단정할 수는 없었다. 하지만 자본시장자료와 회계자료를 함께 사용하여 정보를 추출하면 어느 한 자료만에 의존하는 경우에 비해 월등한 예측력 향상을 도모할 수 있음을 알 수 있었다. 이 결과는 회계자료에만 의존해 온 기업파산연구에 대해 자본시장자료에 좀더 관심을 기울일 필요가 있음을 시사한다.

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A Study on the Transition and Classification of Somatotyping

  • Choi, Wan Suk;Moon, Ok Kon;Choi, Jung Hyun;Kim, Bo Kyoung;Wang, Joong San;Kim, Hong Rae;Park, Joo Hyun;Song, Young Hwa;Hwang, Hyun Sook;Kim, Soon Hee
    • 국제물리치료학회지
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    • 제4권1호
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    • pp.539-544
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    • 2013
  • Experts of medicine, philosophy and psychology found that human somatotypes were related to personality or physical characteristics and classified somatotypes into various forms. This study explored the changes and types of somatotyping methods from Before Christ to present day and identified the status of studies of somatotypes in the area of physical therapy. This study covered the methods applied in various majors with a focus on those provided in books and papers of Heath BH. and Carter JEL. Based on the results, there are officially twelve assessment methods. Currently, the method of Heath & Carter is most widely applied. Somatotypes are studied in many areas. It is actively explored in the area of pain physical therapy, thermotherapy and integumentary physical therapy. Also, the soft tissue physical therapy area seeks interdisciplinary studies. This study found that there were various assessment methods in diverse areas. It is likely that continuous studies will develop new assessment methods. It is hoped that in the area of physical therapy, somatotypes shall be applied more amply.

외국인 및 기관투자자의 순매수강도와 주식수익률 간의 관계 (The Relation between Net Purchase of Foreign and Institution Investors and Expected Returns in the Korea Stock Market)

  • 김수경;변영태
    • 경영과정보연구
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    • 제30권4호
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    • pp.23-44
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    • 2011
  • 본 논문은 우리나라 주식시장을 대상으로 2003년 1월 2일부터 2011년 4월 30일까지 일별자료를 이용하여 외국인 및 기관투자자의 순매수강도가 주식수익률에 영향을 미치는 지에 대해 금융위기 전 후로 구분하여 분석하였다. 우선 t일의 close to close 수익률은 전체기간에 대해 t-1일의 외국인 및 기관투자자의 순매수강도에 의해 통계적으로 유의하게 음(-)의 영향을 받았으며, 동시차에서는 양(+)의 방향으로 영향을 받는 것으로 나타났다. 하위기간인 금융위기 전 후에 대한 분석에서도 전체기간과 별다른 차이점은 발견되지 않았다. close to open 수익률을 이용한 분석에서는 전체기간과 하위기간 모두에 대해 t-1일의 외국인 및 기관투자자의 순매수강도는 t일의 close to open 수익률에 양(+)의 영향을 미치는 것으로 나타났다. 마지막으로 open to close 수익률을 이용한 분석에서 전체기간의 경우 t-1일의 외국인 순매수강도라는 정보는 당일의 시초가가 형성된 이후에 영향력이 사라지는 것으로 나타났고, 기관투자자의 순매수강도는 시초가 형성 이후에 음(-)의 영향을 준다는 사실이 발견되었다. 본 연구에서는 close to close 수익률을 close to open와 open to close 수익률로 분해하여 분석함으로써 외국인 및 기관투자자의 투자행태가 주식수익률에 미치는 영향에 대해 보다 구체적인 결과를 얻을 수 있었다.

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은행의 비이자 수익에 대한 Multi-Country 연구 (An analysis of Nontraditional Activities at Banks: a cross-country analysis)

  • 최성호
    • 국제지역연구
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    • 제12권2호
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    • pp.27-53
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    • 2008
  • 이 논문은 세계 각국 은행들의 비전통적 수익활동의 수준을 결정하는 다양한 요인을 조사한 논문이다. 구체적으로 이 논문은 여러 국가의 광범위한 자료를 사용하여 비이자수익 수준을 결정하는 은행 고유요인과 나라별 특성요인을 검토하였다. 이 논문은 전통적인 미국중심 은행들에만 국한된 기존의 연구를 넘어선 것에 초점을 두고 있으며 세계 각국 은행들의 세부적인 자산부채관리에 대한 정보를 제공하고 있다. 이 논문의 결과는 은행의 크기, 대손충당금의 수준, 명시적 예금보험의 존재, 은행업에 대한 제한의 정도, 각국 은행의 자유도, 정부 그리고 외국인 소유지분의 크기, 각국의 지배구조 정도 즉 투명성이 은행의 비이자수익 수준을 결정하는데 양의 영향을 미치고 있음을 제시하고 있다. 전통적 대출과 자금조달에 대한 더 큰 의존성, 시장중심의 경제체제, 해당국에 다수의 감독당국의 존재 등은 비이자수익과 음의 관계를 가지고 있다. 하지만 이 논문은 해당국가의 경제발전수준은 이러한 변수들의 관련성의 크기에 유의하게 영향을 미치고 있음을 또한 제시하고 있다.