• 무역학회지
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• 제44권2호
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• pp.173-188
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• 2019

The purpose of this study is to investigate the causal relationship between the logistics industry and the economic growth in Korea, and to provide implications for the contribution of the logistics industry to economic growth. Unlike Previous Related Studies, we derive short-term and long-term effects through dynamic panel analysis such as panel Granger causality test and impulse response function estimation using panel vector error correction model. The results of the empirical analysis are as follows: Labor input of the logistics industry has the greatest positive impact on economic growth. And capital input and total sales of the logistics industry have a negative effect on economic growth. This means that Korea's logistics industry features labor-intensive growth. In addition, We have also found that the growth (sales) and capital input of the logistics industry have not yet had a direct positive impact on economic growth. Therefore, the results of this analysis provide implications for the direction of logistics industry policy to enhance contribution of the logistics industry to economic growth.

• 융합경영연구
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• 제6권3호
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• pp.14-25
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• 2018

Purpose - Taxes cover all aspects of society, especially in terms of resource allocation and economic growth. In reality, the tax revenue is often used to measure the quality of a country's economy. The relationship between tax revenue and economic growth has been paid much attention by academic circles. Due to this background, this paper attempts to investigate the mutual effect between tax revenue and economic growth. Research design, data, and Methodology - The annual datum form 1980 to 2017 are employed to conduct an empirical analysis under the vector error correction model. In this paper, the GDP is treated as an independent variable. The tax revenue is treated as a dependent variable. Furthermore, a menu of statistic approaches will be used to testify the mutual effect between tax revenue and economic growth. Results - Via the co-integration test, the results report that the tax revenue has a positive effect on economic growth in the long run. Through the vector error correction estimation, the results also report that the tax revenue also has a positive effect on economic growth in the short run. Conclusions - This paper provides a view that the tax revenue is a kind of a determinant to promote economic growth. Therefore, the China's government should pay much attention to the improvement of tax revenue system so as to maintain a high-speed economic growth.

• 지역연구
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• 제38권1호
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• pp.3-20
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• 2022

본 연구의 목적은 수도권을 분석의 공간적 범위로 설정하여 2010년부터 2019년까지의 신성장산업의 창업 사업체 및 종사자 이전 패턴을 탐색적으로 분석하고, 신성장산업 창업 사업체의 유입 및 유출에 영향을 미치는 지역 수준 요인을 밝히는 데에 있다. 분석을 위한 자료로는 「전국사업체조사」원자료를 이용했으며, 신성장산업 사업체 및 종사자 수 유입 및 유출 자료를 바탕으로 시군구 수준 공간 자료를 구축했다. 분석을 위해 지역별 유출 유입에 대한 연결정도 중심성을 산출했으며, 음이항 회귀모형을 응용해 신성장산업의 유입 및 유출에 영향을 미치는 지역 수준 요인에 대한 실증 분석을 수행했다. 분석 결과에 따르면, 신성장산업 제조업 부문은 경기 남부 지역을 중심으로, 신성장산업 서비스업 부문은 강남 및 구로-금천구 일대를 중심으로 활발한 입지 이전이 발생하고 있었으며, 지역 수준 요인들이 신성장산업 창업 사업체의 유입 및 유출에 미치는 영향은 업종에 따라 상이한 것으로 나타났다. 본 연구는 최근 정책적 관심이 증가하고 있는 신성장산업에 대한 공간 이전 패턴을 파악하고, 영향 요인을 밝혀내기 위해 실증 분석을 수행함으로써 신성장산업 유치를 통해 지역 경제의 경쟁력 향상을 달성하고자 하는 지역산업정책에 대해 시사점을 제시했다.

• STI Policy Review
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• 제1권1호
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• pp.93-109
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• 2010

Over the last decade, some Korean enterprises have emerged to become global players in their specialized products. How have they achieved such tremendous technological progress in a short period of time? This paper explores that question by examining the characteristics of technological innovation activities at major Korean enterprises. The paper begins with a brief review of the stages of economic growth and science and technology development in Korea. Then, the existing literature, explaining the Korean innovation model, is analyzed in order to establish a new framework for the Korean innovation model. Specifically, Korean firms have experienced three sequential phases, and thus, the Korean model, at the firm level, can be coined as "path-following," "path-revealing," and "path-creating." Then, the stylized facts in the first phase (path-following) and the second phase (path-revealing) are discussed, in the context of empirical evidence from the areas of memory chips, automobiles, shipbuilding, and steel. In terms of technology development, the Korean model has evolved as "collective learning" in the first phase, "collective recombination" of existing knowledge and technology in the second phase, and is assumed as "collective creativity" in the third phase. Ultimately, all three can be classified as "collective creation". Korean firms now face a transition in the modes of technological innovation in order to efficiently implement the third phase. To achieve remarkable progress again, as they did in the past, and to sustain the growth momentum, Korean firms should challenge new dimensions such as creative technological ideas, distinctive technological capabilities, and unique innovation systems -- all of which connote 'uniqueness'. Finally, some lessons from the Korean technological innovation experience are addressed.

• 한국지진공학회논문집
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• 제21권3호
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• pp.145-152
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• 2017

The objective of this study is to propose a simple and accurate analytical model for HSS braces. For this purpose, a physical theory model is adopted. Rectangular hollow section steel (HSS) braces are considered in this study. To accurately simulate the cyclic behavior of braces using the physical theory model, empirical equations calculating constituent parameters are implemented on the analytical model, which were proposed in the companion paper. The constituent parameters are cyclic brace growth, cyclic buckling load, and the incidence of local buckling and fracture. The analytical model proposed in this study was verified by comparing actual and simulated cyclic curves of brace specimens. It is observed that the proposed model accurately simulates the cyclic behavior of the braces throughout whole response range.

• East Asian Economic Review
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• 제25권1호
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• pp.73-97
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• 2021

China has experienced many structural changes in the process of economic development over the past three decades. Using a time-varying parameter VAR model with stochastic volatility and mixture innovations, this study investigates whether such structural changes in, especially tools and operational aims of monetary policy, affect the monetary transmission mechanism. We find that impulse responses of output growth and inflation to monetary shocks have substantially increased and then reversed to decrease around 2005-2006. This time variation is mainly caused by changes in the monetary transmission mechanism, i.e., the manner in which main macroeconomic variables respond to policy shocks, rather than by changes in volatilities of exogenous shocks. The result implies that aggressive monetary policy to facilitate economic growth in the developing economies may be legitimized, unless it causes inflation seriously.

• Journal of Mechanical Science and Technology
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• 제19권7호
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• pp.1393-1404
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• 2005

Fatigue crack growth and life have been estimated based on established empirical equations. In this paper, an alternative method using artificial neural network (ANN) -based model developed to predict fatigue damages simultaneously. To learn and generalize the ANN, fatigue crack growth rate and life data were built up using in-plane bending fatigue test results. Single fracture mechanical parameter or nondestructive parameter can't predict fatigue damage accurately but multiple fracture mechanical parameters or nondestructive parameters can. Existing fatigue damage modeling used this merit but limited real-time damage monitoring. Therefore, this study shows fatigue damage model using backpropagation neural networks on the basis of X -ray half breadth ratio B / $B_o$, fractal dimension $D_f$ and fracture mechanical parameters can estimate fatigue crack growth rate da/ dN and cycle ratio N / $N_f$ at the same time within engineering limit error ($5\%$).

• 한국항만경제학회지
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• 제17권2호
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• pp.61-87
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• 2001

The purpose of this paper is to analyze the location, population growth. and cargo concentration of Korean port-cities. In the location theory, Sommer (1976) and McGee (1967) models are newly introduced, as are the Rimmer (1967), Bird (1965), Hoyle (1981) models. which were already introduced in previous studies from Korea. Analysis of population growth in the Korean port-cities is conducted using data from 1966 to 1998. Rimmer and Hoyle's concentration models are used to measure cargo concentration from 1966 to 2000. The main results of this paper are as follows: First, Korean ports are concentrated on the East Sea, the Southern Sea, and the West Sea. Their locations are closely related with the hinterland. the inland city, and growth of port-cities. In considering the foreign countrys' cases, Korean port-cities are similar to the models of Bird and Hoyle. Second, the populations of Ulsan and Pohang grew at the fastest rate in 1966-1998, while the port cities in the Honam and Jeiu region grew at much lower ratios. Most port cities are located near large industrial complexes. Third the growth rates of Gwangyang, Daesan, Pohang, Pyungtaeg, and Samchunpo increased, while those of Busan. Mukho, Masan, Mogpo, Yeosu, and Sokcho declined. Of particular note, the growth rate of Busan remained negative after the late 1980s. Fourth. empirical results using the Rimmer (1967) model indicate that Gwangyang, Daesan, Pyungtag, and Pohang have shown the concentration. But the deconcentration was shown from the Busan, Mukho, Janghang, Gunsan, Mogpo, Yeosu, Masan, Sokcho. and Jeju. Fifth, the concentration of ports located in West coast region has shown the mixed results between concentration and deconcentration except the concentration of early 1970s and 1990s. The concentration of ports located in East coast region has shown the concentration before the middle of 1980s. And deconcentration after the middle of 1980s have appeared. The Southern coast region has shown the continuous deconcentration except the partial concentration of early 1986. and 1991. Planners of Korean ports should find out the factors of concentration and deconcentration of each ports and should determine factors such as investment priority level. size and scope in order to ensure the balanced development of regional ports and port-cities.

• 한국지역지리학회지
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• 제21권3호
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• pp.503-514
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• 2015

본 연구는 교통 인프라 투자의 농촌지역 발전 효과를 체계적이고 실증적으로 분석하기 위하여 기존 문헌연구를 통해 교통 인프라 투자와 농촌지역 발전 간의 다층적인 인과관계를 이해할 수 있는 분석틀을 설정하고, 교통 인프라 투자와 농촌지역 발전의 공간적 패턴을 기술적으로 분석하였으며, 구조방정식 모형을 활용하여 우리나라 농촌지역에서 교통 인프라 투자와 지역발전 간의 직 간접 관계에 대해 탐색적인 실증분석을 실시하였다. 분석 결과, 교통 인프라 투자는 접근성 제고를 통해서 인구기반 활성화와 생산 소득 증대에 뚜렷한 영향을 미칠 뿐만 아니라 인구기반 활성화를 통해서 간접적으로도 생산 소득 증대에 영향을 미치는 것으로 나타났다. 이는 우리나라 농촌지역에서도 지금까지 교통 인프라 투자가 단기적 및 장기적으로 다양한 경로를 통해서 지역발전의 궁극적인 목표인 생산 및 소득의 증대에 긍정적인 영향을 미치고 있음을 시사한다.

• Clinical and Experimental Pediatrics
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• 제51권1호
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• pp.26-32
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• 2008

목 적 : 1998년과 2005년 신체발육표준 제정사업 자료를 이용하여 2007년 소아청소년 성장곡선의 개발과정에서에 이용된 성장곡선 및 혈압분포 개발 방법론을 제시하고자 하였다. 방 법 : 성장곡선은 1998년과 2005년 자료를 이용해서 각 백분위수의 성장곡선 모형을 추정하고 LMS를 방법을 이용하여 최종 성장곡선을 생산하였다. 연령과 신장별 혈압 성장곡선은 2005년 자료를 이용하여 남녀별로 고정효과 회귀모형을 적용하여 산출하였다. 결 과 : 2007 소아청소년 성장곡선 및 혈압분포 표를 제시할 수 있었다. 결 론 : 2007년 성장곡선과 혈압분포 표는 현재 가용한 자료와 최신의 통계적 방법을 최대한 활용한 국내 최초의 결과로서 향후 지속적인 발전을 위한 논의와 연구가 필요하다.