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      • KCI등재

        예측모형과 예측유형에 따른 정확성 비교분석 -미국 NFL 경기에 대한 예측을 중심으로-

        송치웅 ( Chi Ung Song ) 한국생산성학회 2015 生産性論集 Vol.29 No.1

        This study evaluates the predictive accuracy of expert (judgmental) forecasting and system (statistical) forecasting that provided two types of predictions on the NFL regular season games during 2000 and 2001 season. Then, we empirically investigate whether there exists a statistically significant difference in the predictive accuracy within the four groups of experts and systems respectively. From this, we implicitly investigate whether there is any prediction that has a better productivity. For this, we use the methodology of ‘Analysis of Variance by Ranks’ as an analytical tool. Our study finds that there is a statistically significant difference in the predictive accuracy within the group of experts as well as the group of systems who predicted the game winners. Meanwhile, we do not find a statistically significant difference within the group of experts as well as the group of systems who predicted against the betting line. In conclusion, it would not be the model of forecasting but the type of prediction that may induce a difference in the predictive accuracy.

      • KCI등재

        정부연구개발 투자가 총요소생산성에 미치는 영향: 민간부문 지원사업을 대상으로

        송치웅 ( Chi Ung Song ),이정원 ( Jung Won Lee ),오완근 ( Wan Keun Oh ) 한국생산성학회 2011 生産性論集 Vol.25 No.2

        This study examined the impact of government R&D expenditure on total factor productivity(TFP), for the government R&D projects in which private companies participated. The impact on TFP was analyzed for the whole industry, manufacturing industry, service industry, and 11 sub-manufacturing industries. The empirical results show that the government R&D expenditure contributes to the increase in total factor productivity on non-metallic mineral products, basic metal products, fabricated metal products except machinery and furniture, and electronic and electrical equipment. This implies that government R&D expenditure contributes to the growth of Motor vehicles and parts, Ship building and repairing, Primary iron and steel products, Electronic components and accessories, Semiconductors and related devices, and Display panel industries.

      • KCI등재

        국가별 연구개발 활동 차이에 대한 이론적 고찰 -O-ring Theory Approach를 중심으로-

        송치웅 ( Chi Ung Song ),김영준 ( Young Jun Kim ) 한국생산성학회 2013 生産性論集 Vol.27 No.4

        Michael Kremer analyzed the existing gap in income and wage between more advanced countries and less advanced countries with the help of complementarity in skilled labor. Kremer argued that the marginal productivity of one worker will improve when he or she works with a high-skilled labor. Consequently, firms using more complex production process will try to hire more skilled labor in order to complete the production tasks successfully. This study employs the main idea of Michael Kremer`s research in order to explain the existing differences in R&D activities across countries. We argue that there exists complementarity among research personnels in R&D projects. That is, the R&D projects are likely to be successful when researchers work with other highly skilled researchers. It is thus important for research institutes to hire more scientists and engineers with better research skills in order to increase the success ratio of R&D activities. This study sheds some light on R&D policies that affect successful completion of national R&D projects.

      • KCI등재후보

        부품소재 중핵기업의 기술혁신 결정요인 분석

        송치웅(Chi Ung Song) 한국기술혁신학회 2007 기술혁신학회지 Vol.10 No.3

        본 연구는 부품소재 중핵기업의 기술혁신 결정요인을 분석하기 위해 기업규모, 시장집중도 그리고 기업의 특성을 나타내는 일반변수들과 혁신유무의 관계를 측정하였다. 본 연구는 이를 위하여 과학기술정책연구원이 조사한 ‘기술혁신조사(KIS2005)의 원자료와 Probit 모형을 활용하였다. 실증분석 결과에 의하면 기업규모는 혁신의 유무와 정(+)의 관계에 있으나 시장집중도는 부(-)의 영향을 미치는 것으로 나타났다. 기업특성을 나타내는 일반변수 중에는 순이익과 연구개발비가 혁신유무와 정(+)의 관계를 갖는 반면, 수출액과 자기자본비율은 부(-)의 관계에 있는 것으로 나타났다. 결론적으로, 부품소재 중핵기업의 기술혁신 활동을 촉진하기 위해서는 기업규모의 증대와 경쟁적인 시장구조의 조성이 이루어져야 할 것이며 또한 연구개발 활동에 대한 재정적 지원과 함께 자본 및 금융시장에서의 원활한 자본조달이 뒷받침되어야 할 것이다. 다만, 본 연구의 실증분석에서 나타난 수출액과 혁신유무의 관계에 대해서는 추가적인 연구가 필요할 것이다. The main purpose of this study is to analyze the determinants of innovation in the medium core firms that belong to components and materials industry. For this purpose, we introduce the Schumpeterian hypothesis as a theoretical background at first. According to the Schumpeterian hypothesis, large firms in concentrated markets are likely to have more innovative activities. That means, firm size and market structure are the main determinant of innovation. Then, we propose other economic factors that have been considered to have effects on firms' innovative activities in previous studies. Those factors are export, profit, growth rate, R&D expenditure and capital intensity. In order to analyze the determinants of innovation, we estimate whether firm size, market structure, export, profit, growth rate, R&D expenditure and capital intensity affect to the possibility of creating innovation in medium core firms. In order to do this, our study uses survey data from 'Korean Innovation Survey(200S), conducted by STEPI as well as utilizes the probit model as an analytical method. According to the empirical results, firm size has a positive relationship with innovative activities of medium core firms but market concentration does not. We find the negative correlation between market concentration and innovative activities in this study. Thus, we have to say that we do not fully support the Schumpeterian hypothesis in this case. Among other variables, profit and R&D expenditure are estimated to have positive relationship with innovative activities, while export and capital intensity are estimated to have negative relationship with innovative activities. In case of growth rate, we do not find any significant relationship with innovative activities. In conclusion, larger firm size, higher market competition, more access to the financial market and additional R&D investment would facilitate innovative activities of medium core firms. However, we have to review the relationship between export and innovative activities that has been estimated in this study. While the estimated effect of export on innovative activities can be explained by the own characteristics of medium core firms that produce and supply capital goods to final manufacturer, we have address this issue in the future.

      • KCI등재

        3T 방식에 의한 국가 간 창의성 지수(Creativity Index) 비교연구

        송치웅 ( Chi Ung Song ),장성일 ( Sung Il Jang ) 한국생산성학회 2014 生産性論集 Vol.28 No.4

        This paper compares creativity capacities of 15 major OECD countries including Korea by measuring ‘Creativity Index’. Richard Florida has first developed Creativity Index. By comparing Creativity Indices of 15 countries, this paper aims to find the current status of Korea in knowledge-based or the so-called creative economy. To measure Creativity Index, the paper introduces almost same methodology used in Florida & Tinagli (2004), and improves it with recent data. In Florida & Tinagli (2004), Creativity Index was comprised of Talent Index, Technology Index, and Tolerance Index(3Ts) from 9 sub-indices. This paper modified the 9 sub-indices into 8 for more clarity in measuring. To measure one country`s relative position, the authors also employ ``15 points grading``. The grading is to give 15 (points) to the country which has the highest value. Talent Index is comprised of Creative Class Index, Human Capital Index, and Scientific Talent Index. Finland is on the top among other countries. Sweden, Norway, and Switzerland are just behind the first one. For Korea the country is ranked 10th, because the country`s creative class index is not high. Technology Index is based on Innovation Index, High Tech Innovation Index, and R&D Index. Switzerland is the highest country defeating other countries. Sweden, Finland, and Japan are the second group members. Korea is the 6th because of its heavy R&D investments. In Tolerance Index, Sweden is the very tolerant country to minorities and non-traditional behaviors. Norway, the Netherlands, and Slovenia are the 2nd group. Korea, on the contrary, shows no excellence in ‘tolerance’ ranking the bottom of the index. When the 3Ts are aggregated, Sweden is the top position in Creativity Index. In the 2nd group there are Switzerland, Finland, the Netherlands. Because of the country`s poor value of Tolerance Index. Korea is down there ranking the 11th. In conclusion, Korea`s Creativity Index is somewhat poor. In order for improving competitiveness in Creativity Index, authors recommend the following measures. First of all, society of Korea should be tolerant to minorities and non-traditional ideas & behaviors. Second, Korean government needs to pay more attention in promoting creative class in the longer term with large investments.

      • KCI등재

        기업의 혁신전략과 보완성에 관한 연구 : 자체 R&D개발과 외부 기술조달

        김현호 ( Hyunho Kim ),송치웅 ( Chi-ung Song ) 한국생산성학회 2017 生産性論集 Vol.31 No.4

        The development speed of technology is fast and diversified, the product life cycle is shortened, and the fusion phenomenon between technologies is promoted. In addition, time and space are integrated and standardized, and the scale of R&D of enterprises towards a vast market has been gradually enlarged. Under these circumstances, companies will collaborate on R&D strategies in order to share high expenses and risks with each other. Therefore, in this research, we analyze how to select these strategies because of the nature of what kind of method to take company's R&D activities in the strategic dimension. In addition, the main objective is to grasp what kind of achievement the strategy is and complementing the strategies. Companies that have process innovation in the field of Korean manufacturing industry are more than companies that carried out product innovation (56%> 42%), For both innovations, the companies that have taken internal R&D and external R&D procurement at the same time accounted for more than half, (product innovation: 70%, process innovation: 64%). The companies taken only external R&D in process innovation Companies are grasped higher than in product innovation. We classified R&D activities of companies into four (No R&D, Internal R&D, External R&D, Joint of internal and external R&D) and present the determinant variables for the choice of R&D activities. The companies whose purpose of product innovation is to expand and develop the market, a large-scale enterprise that emphasizes protection of technology such as patents and utility model rights and provider information have selected the internal and external R&D at the same time. The companies whose aim of innovation is to emphasize on in-house research information and diversity of products in technology-intensive industries and that technology is protected by complex design and confidentiality method take internal R&D only for the purpose of product innovation. Moreover, the companies carrying out external R&D have the lacks in technology and market information. Especially the companies with high export concentration, take internal R&D and external R&D simultaneously, which is indispensable for product innovation. Now consider the determinant variables of R&D activities for process innovation. Emphasis on provider information, the purpose of technological innovation is quality improvement, emphasis on protecting technology and conduct internal and external R&D activities at the same time. Companies that place emphasis on research information inside the company mainly engage in internal R&D activities and companies of affiliated companies in the group are mainly to introduce external R&D. In the complementary measurement of both innovations, In the aspect of outcome in product innovation, the internal R&D (external R&D) in the strategy for the company’s R&D shows the positive complementary with external R&D (internal R&D). In the outcome in the process innovation, however, there is no complementary effect between internal R&D and external R&D.

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