• Title/Summary/Keyword: Panel linear regression

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A Study on Industry Characteristics of Technology Trade in Korea : evidence from OECD Countries (우리나라 기술무역의 산업별 특성에 관한 연구 : OECD 국가를 대상으로)

  • Baek, Eun-Young;Moon, Hee-Cheol
    • International Commerce and Information Review
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    • v.12 no.4
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    • pp.151-170
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    • 2010
  • The present study made an empirical analysis for investigating the competitiveness of technology trades in Korea. In particular, the study deduced the correlation between technology export and technology import using the variables of Gross Domestic Expenditure on R&D and Per capita industry value added Productivity and employed fixed effect model in panel linear regression model. It is found that the R&D expenditure of OECD countries made a significant effect on the technology import and the value-added labor productivity made a significant result on both technology export and import. Therefore, it showed that the technology trade in Korea made a sensitive response to labor productivity in OECD countries. By panel analysis, machine, construction, ICT, and service industry affect most on technology export in Korea for recent 5 years. For technology import, electric-electron, chemical, service, and construction industry have significant effects. This study contributed to understanding of industrial characteristics affecting technology trades in Korea and empirical analysis to show correlation between the factors affecting technology trade.

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An Analysis of the Determinants of the Collection Rate of Agricultural Plastic Waste (영농폐비닐 수거율 결정요인 분석)

  • Yi, Wooell;An, Donghwan
    • Journal of Korean Society of Rural Planning
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    • v.25 no.3
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    • pp.11-18
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    • 2019
  • It is widely known that agricultural plastic waste incineration by farmers may cause big forest fire or fine dust in rural areas. Hence, how to increase the rate of collection and recycling of the agricultural plastic waste is of concern to policy makers especially for rural environment. The purpose of this study is to find the determinants of the collection rate of agricultural plastic waste. This study used the data from 'Research on Agricultural Waste' by the Korea Environment Corporation from year 2012 to 2015 for 163 regions. This study found that the compensation rate for collection, the frequency of collecting services, and the quality of waste are important to increase the collection rate. And the regions with more elderly and low income people are more likely to have higher collection rate. Finally, the chief producing regions that are specialized in a certain crop shows higher collection rate.

Natural Period Estimation for the Buildings of Upper Wall and Lower Frame Type (상부벽식-하부골조를 가진 복합구조물의 고요주기예측)

  • 박기수;김희철;김종헌
    • Journal of the Earthquake Engineering Society of Korea
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    • v.4 no.4
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    • pp.1-13
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    • 2000
  • 상부벽식 하부골조를 가진 복합구조물은 부족한 대지를 효율적으로 활용하기 위하여 건설되고 있다. 이러한 복합건물은 상부벽식-하부골조를 가지는 구조로써 일반적으로 전이보 또는 전이판으로 상하부를 연결하고 있다. 따라서 상하부 구조사이의 강성과 질량에 많은 차이가 발생하게 된다. 구보물의 고유주기는 지진하중과 밑면전단력을 결정하기 위한 중요한 변수이다. 그러나 현재 국내 규준에서 제안하는 고유주기 산정식은 이러한 건물에는 적용할 수 없다. 본 연구에서는 상부벽식-하부골조를 가진 복합구조물의 고유주기의 산정에 영향을 미치는 변수들 중 가장 큰 영향을 미치는 건물의 상하부 층수에 따른 변수만을 고려하여 고유주기산정식을 제안하였다. 하부는 2~5개 층을 가지고, 상부는 10~18개 층을 가지는 15~20층의 건물이면 정형적인 평면을 가지는 복합구조물로 한정하였다. 건물 내부의 채움벽에 대한 효과를 고려한 고유주기 제안식은 다음과 같다. 장변 방향 : $T_{L}$=($0.20H_{h}+0.05H_{i}$)/$sqrt{B}$-0.42 단변 방향 :$T_{S}$=($0.07H_{h}+0.12H_{i}$)/$sqrt{B}$-0.40

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A Study on Technology Trade of the Korea and the Target for Concluding an FTA (한국의 FTA 체결국과의 기술무역 연구)

  • Baek, Eun-Young
    • International Commerce and Information Review
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    • v.13 no.4
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    • pp.125-149
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    • 2011
  • The present study made an empirical analysis for investigating the competitiveness of technology trades in Korea. In particular, the study deduced the correlation between technology export and technology import using the variables of Gross Domestic Expenditure on R&D and Per capita industry value added Productivity and employed fixed effect model in panel linear regression model. It is found that the R&D expenditure of OECD countries made a significant effect on the technology import and the value-added labor productivity made a significant result on both technology export and import. Therefore, it showed that the technology trade in Korea made a sensitive response to labor productivity in OECD countries. By panel analysis, machine, construction, ICT, and service industry affect most on technology export in Korea for recent 5 years. For technology import, electric-electron, chemical, service, and construction industry have significant effects. This study contributed to understanding of industrial characteristics affecting technology trades in Korea and empirical analysis to show correlation between the factors affecting technology trade.

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An Empirical Test on Technology Export of Korea SMEs (우리나라 중소기업의 기술수출에 관한 실증연구)

  • Baek, Eun-Young
    • International Commerce and Information Review
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    • v.16 no.2
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    • pp.279-296
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    • 2014
  • This study focused on the Technology export of Korea SMEs. Therefore this study made an empirical analysis for investigating the competitiveness of technology export in Korea SMEs and using panel data 2003-2011 of technology trade data between 72 Countries. In particular, the study deduced the correlation between technology export in Korea SMEs using the variables of Gross Domestic Expenditure on R&D and Per capita GDP, distance, population, free-trade index, firm R&D against industry value added of country, Patent grants by country to USA fixed effect model in panel linear regression model. It is found that the Technology export of Korea SMEs made a significant effect on the per-GDP, Gross Domestic Expenditure on R&D. The results suggest that the study should use technology gap variables and the strategy for activating the Technology export of Korea SMEs should be made for future works.

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A Study on Spillover of Technology Trade against Post- BRICs (BRICs 이후 신흥국과의 기술무역 확산방안 연구)

  • Baek, Eun-Young
    • International Commerce and Information Review
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    • v.16 no.5
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    • pp.361-385
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    • 2014
  • This study focused on Spillover of Technology Trade against Post- BRICs of the Technology export of Korea. Therefore this study made an empirical analysis for investigating the competitiveness of technology export in Korea and using panel data 2003-2012 of technology trade data between 6 Countries(Indonesia, Mexico, Nigeria, South Africa, Turkey, Vietnam). In particular, the study deduced the correlation between technology export in Korea using the variables of Gross Domestic Expenditure on R&D and Per capita GDP, distance, population, free-trade index, FDI, Technology-Intensive Manufactures, Pattern Investment fixed effect model in panel linear regression model. It is found that the Technology export of Korea SMEs made a significant effect on the pop, free_trade, and distance. and also it is found that the Technology export of Korea Big Business made a significant effect on the per-GDP, Fdi from Korea, free_trade, and distance. The results suggest that the study should use technology gap variables and the strategy for activating the Technology export of Korea should be made for future works.

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Analysis on the Relationship between R&D Inputs and Performance by using Panel Data : Focus on Defense Industry (패널 데이터를 이용한 방위산업의 R&D 투입과 성과 관계 분석)

  • Lee, Kang-Taek;Kim, Geun-Hyung;Lee, Seung-Hyun;Lee, Ik-Do
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.19 no.12
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    • pp.491-497
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    • 2018
  • This study analyzes the relationship between R&D input and performance using panel data from the defense industry. A research model is established based on the R&D logic model, and the study sample consists of a strongly balanced panel data (n=351) empirically analyzed using panel linear regression. Results identified that defense improvement expenditure has a positive influence on the R&D input, and R&D input positively affected patents using a 5-year time lag. In addition, R&D input positively impacts economic performance, including sales and profit. Hence, the major finding includes R&D inputs have statistically significant effects on economic outcome and the R&D logic model featuring a time-lag.

Analysis of the Feasibility and Reliability of Models Measuring National Innovative Capability: with a Focus on the IUS of the EU (국가혁신역량 측정모형의 신뢰성과 타당성 분석: 유럽연합의 IUS를 중심으로)

  • Um, Ik-Cheon;Cho, Joo-Yeon;Kim, Dae-In
    • Journal of Korea Technology Innovation Society
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    • v.17 no.1
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    • pp.45-67
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    • 2014
  • National Innovative Capability (NIC) is an important decisive factor where economic growth is concerned. As such, it is very important to measure and manage NIC. The composite index approach is one of the widely used approaches to measuring NIC, but there have been insufficient reviews of its feasibility and reliability. This paper conducted an analysis of the feasibility and reliability of the report on the last three years (i.e. 2011 through 2013) of the Innovation Union Scoreboard (IUS) of the EU, which is the most representative means of measuring NIC. It turned out that its reliability meets the recommended criteria as a result of Chronbach's alpha-based test of the models of IUS-related composite index. However, neither the absolute fit index nor the incremental fit index was found to meet the recommended criteria in a construct validity analysis. It also turned out that predictive validity is very low as a result of panel linear regression analysis of sectors and items of IUS-related composite index. This paper presents a number of considerations to be made when measuring national innovative capability using the composite index approach, as well as major policy suggestions based on the results of the analysis.