• Title/Summary/Keyword: 고정효과 모형

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Effectiveness of R&D Tax Credit for SMEs (중소기업 R&D 조세지원의 효과성 분석 및 개선방안)

  • Noh, Meansun;Cho, Hosoo;Baek, Chulwoo
    • Journal of Korea Technology Innovation Society
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    • v.21 no.2
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    • pp.663-683
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    • 2018
  • This study aims to analyze the effectiveness of R&D tax credit for SMEs. We surveyed to collect the information on firm's financial statements and R&D tax credit during 2014-2016, and implemented fixed effect model, random effect model and panel negative binomial model. The results show that the effect of R&D tax credit is 5.3 times larger in terms of R&D expenditure and 4.3 times bigger in terms of number of researchers than that of R&D subsidy. In addition, the effect of tax credit on non-metropolitan area companies is higher than that in the metropolitan area. Based on these results, we suggests three ways to improve the R&D tax incentive system for SMEs; To convert unused R&D tax credit of the start-ups to tax points, to exempt the minimum tax rate on R&D expenditure in equipment, and to unify the operation of various R&D tax credit institution.

Empirical Analysis on the Effects of FTAs and FTA Spillover on the Bilateral Trade using GMM, Fixed and Random Panel Model, and PPML Estimation (GMM, 패널, PPML 비교분석을 통한 FTA와 FTA파급효과 분석)

  • Lee, Soon-Cheul
    • International Area Studies Review
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    • v.22 no.2
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    • pp.3-18
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    • 2018
  • This paper analyzes both the FTA effects and FTA spillover effects on bilateral trade using 62 countries' panel data during the period of 2003 ~ 2013. To this end, we construct a FTA dummy variable for the effect of FTA in the model and the weighted FTA matrix interacted with export and import for the spillover effect of FTA. Gravity model is applied to the empirical analysis with GMM, fixed and random effects, and PPML estimation. As a result of the analysis, FTA variables have positive relationships with bilateral export and import. The weighted FTA matrix interacted with export and import also have positive signs on the bilateral export and import in all estimations. Thus, we conclude that various FTAs of neighbor or 3rd countries increase the bilateral export and import. We provide some implications that a country to increase the amount of trade has a trade relationship with the countries having various FTAs and for the FTA effect analysis, the three-country model is better than to the two-country model.

A Trade Effect Analysis of the Introducing the Euro in the Members of the Eurozone (유로존 국가들의 유로화 도입으로 인한 무역효과 분석)

  • Kang, Bo-Kyung
    • International Area Studies Review
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    • v.14 no.1
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    • pp.203-219
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    • 2010
  • Nowadays an instability of the exchange rate on accounts of global finance crisis brings on a lot of an economic damage such as recession, decreasing of total trade and so on. However some countries which belong to be membership of the eurozone could escape economic slump shortly and easier than others. The reason for this is that they share with the Euro as a their own currency which is the second vehicle currency all of the world. This paper analyzes the correlation of joining the Euro zone and trade with pooled OLS, random effect estimation, and fixed effect estimation. A membership of the Euro zone are able to increase trade 11.3% ~ 25.3% one another on average since some country belongs to the Euro zone. It is very important for some countries which have a plan to affiliate the Euro zone sooner or later to realize economic effect because of a protection of the Euro zone as well as political power.

Wage Differentials between Standard and Non-standard Workers: Evidence from an Establishment-worker Matched Data (정규직과 비정규직의 임금격차: 사업체-근로자 연결패널을 이용한 추정)

  • Lee, Injae
    • Journal of Labour Economics
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    • v.34 no.3
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    • pp.119-139
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    • 2011
  • Using a establishment-worker matched data, this paper estimates wage differentials between standard and non-standard workers. Unlike previous studies, we estimate a fixed-effect model for the tree-way error-components that control for both unobserved individual heterogeneities and unobserved firm heterogeneities. The estimation results show that standard workers earn 6.5~8.4% mire than non-standard workers. This wage premium is 30~40% of the wage differential estimated from the OLS model. The results implies that a large proportion of the wage differentials between standard and non standard workers can be explained by unobserved firm and individual characteristics.

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The Long-Run Relationship between House Prices and Economic Fundamentals: Evidence from Korean Panel Data (주택가격과 기초경제여건의 장기 관계: 우리나라의 패널 자료를 이용하여)

  • Sim, Sunghoon
    • International Area Studies Review
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    • v.16 no.1
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    • pp.3-27
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    • 2012
  • This paper adopts recently developed panel unit root test that is cross-sectionally robust. Cointegration test is also used to find whether regional house prices are in line with gross regional domestic production (GRDP) in the long run in Korea during 1989-2009. Based on the panel VECM and the panel ARDL models, we examine causal relationships among the variables and estimate the long-run elasticity. We find evidence of cointegration and bidirectional causal relationships between regional house prices and GRDP. The results of long-run estimates, using both fixed effect and ARDL models, show that house prices positively and significantly influence on the GRDP and vice versa. Together with these results, the findings of ARDL-ECM imply that there exists a long-run equilibrium relationship between house prices and regional economic variables even if there is a possibility of short-run deviation from its long-run path.

Predicting soft tissue artefact with linear mixed models (선형혼합모형을 이용한 피부움직임 오차의 예측)

  • Kim, Jinuk
    • The Korean Journal of Applied Statistics
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    • v.31 no.3
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    • pp.353-366
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    • 2018
  • This study uses mixed-effects models to predict thigh soft tissue artefact (STA), relative movement of soft tissue such as skin to femur occurring during hip joint motions. The random effects in the model were defined as STA and the fixed effects in the model were considered as skeletal motion. Five male subjects without musculoskeletal disease were selected to perform various hip joint rotational motions. Linear mixed-effects models were applied to markers' position vectors acquired from non-invasive method, photogrammetry. Predicted random effects showed similar patterns of STA among subjects. Large magnitudes of STA appeared on the points near the hip joint regardless of sides; however, small values appeared on the distal anterior.

가동보의 홍수재해 절감효과에 관한 연구

  • Kim, Phil-Shik;Kim, Sun-Joo;Shim, Jae-Hoon;Park, Hyun-Jun
    • Proceedings of the Korea Water Resources Association Conference
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    • 2010.05a
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    • pp.808-812
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    • 2010
  • 본 연구에서는 경상남도 마산시의 광려천을 대상으로 미공병단의 HEC-RAS 모형을 선정하여기 설치된 고정보가 있는 하천(ScenarioI), 가동보가 있는 하천(ScenarioII), 시간이 흘러 토사 퇴적이 이루어진 상태의 고정보(ScenarioIII)가 있는 하천 일 때 3개의 하천 단면을 설계하여 하천흐름에 미치는 영향을 분석하고 가동보로 개량시 홍수재해 절감 효과를 분석하였다. 홍수량에 따른 수위분석 결과 ScenarioI, ScenarioIII에서는 수위가 상승하여 여유고 기준을 초과하는 부분이 나타나며, 가동보를 도복했을 경우인 ScenarioII에서는 여유고 기준을 초과하는 부분 없어 가동보의 도복 효과로 홍수시 고정보보다 홍수재해 절감 효과가 있는 것으로 나타났다.

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The Impact of Offshoring on Korean Firms' Productivity (오프쇼어링이 한국 기업의 생산성에 주는 영향)

  • Park, Moon-Soo;Kim, Hwa-Nyeon;Lee, Kyung-Hee
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.14 no.10
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    • pp.4784-4790
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    • 2013
  • As with fast growing globalization, Korean firms have increased their offshoring activities and more empirical research are needed to analyze the effect of offshoring on Korean firms' productivity. This study used "Survey of Business Activities", a firm-level panel data set surveyed by the Statistics Korea between 2006 and 2008, and estimated pooled OLS and Panel fixed effect model to examine the impact of offshoring on a firm's labor productivity. Unlike the previous studies on offshoring, we included in the analyses the firms in the service industry in addition to those in the manufacturing industry, and presented the comparative results. The results from pooled OLS model show that 1% increase in the share of offshoring output will lead to 0.03% increase in labor productivity. However, the results from Panel model show that the effects of offshoring on productivity is positive but statistically insignificant. Analyzing the manufacturing and the service sector separately, the main results based on Panel model can be summarized as follows: Offshoring has significant positive effects on firms' productivity in the manufacturing industry. Contrastingly, the impact of offshoring on firms' productivity in the service industry is estimated to be negative but statistically insignificant. Other than the share of offshoring output, most factors except headquarter location have positive effects on firms' productivity in both manufacturing and service industry.

A Generalized Marginal Logit Model for Repeated Polytomous Response Data (반복측정의 다가 반응자료에 대한 일반화된 주변 로짓모형)

  • Choi, Jae-Sung
    • The Korean Journal of Applied Statistics
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    • v.21 no.4
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    • pp.621-630
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    • 2008
  • This paper discusses how to construct a generalized marginal logit model for analyzing repeated polytomous response data when some factors are applied to larger experimental units as treatments and time to a smaller experimental unit as a repeated measures factor. So, two different experimental sizes are considered. Weighted least squares(WLS) methods are used for estimating fixed effects in the suggested model.

EU ETS 실시 이후 탄소누출 가능성 산정 연구

  • Kim, Su-Lee
    • Environmental and Resource Economics Review
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    • v.21 no.3
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    • pp.519-542
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    • 2012
  • In this paper, we empirically analyzed whether carbon leakage really happened in EU by comparing before and after the period of EU ETS. We regarded foreign direct investment outflows as indicator of carbon leakage and analyzed panel regression between production cost including environment cost and this FDI variable. Also we consider foreign market potential to analyze market oriented FDI. According to this analysis, carbon leakage was observed in some models for manufacturing industry. However carbon leakage did not prove consistently in a variety of models and it is hard to speak carbon leakage was happened in EU ETS. Notwithstanding relatively short time series of data, in the view of the fact that carbon leakage was tested in some models, Korea also should keep in mind the possibility of carbon leakage and design emission trading scheme.

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