• Journal of the KSME
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• v.35 no.7
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• pp.593-602
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• 1995

수출주도형 산업구조를 가지고 있는 우리 나라의 경제여건은 1960년대 초 경제개발 5개년 계획을 수립한 이래 지속적인 성장을 기록하여 왔다. 그러나 1986년도에 3저라는 국제경제여건을 호기로 삼아 국제무역수지 흑자를 기록한 이후 선진국의 보호장벽 강화, 세계적인 BLOCK 경제화, WTO 출범에 따른 국내시장 개방압력, 국내임금의 급속한 상승 등 수많은 대내외적 여건으로 인하여 우리경제의 성장에 큰 부담으로 작용하고 있다. 1994년의 경우 전체무역적자가 63억 3천만 달 러를 기록함으로써 한국경제의 계속적인 무역역조현상이 큰 문제점으로 대두되고 있고 1994년 기준으로 전체무역적자의 188%이상에 해당하는 118억 7천만 달러가 대일무역에서 발생한 대일 역조라는 사실과 최근 몇년간 대일무역적자는 다소 개선되고 있으나 전체 무역적자에서 차지하는 비중이 더욱더 높아가고 있는 것에 대한 대책이 시급한 실정이다. 이같은 대일무역적자 문제는 1960년대 이후 급속한 경제성장만을 추구하여 노동집약형 사업이 주가된 경제성장의 결과이며, 산업재, 특히 기계분야에 대한 기술축적의 부족으로 대부분의 자본재 및 중간재와 기술력에 대한 대일의존도의 심화 등에 그 원인이 있다고 할 수 있다. 이러한 점에서 수출 주도형의 한국경제 하에서는 대일무역역조 특히 기계공업분야의 역조현상은 반드시 해결해야 할 중요한 정책과제 임을 인식해야 하며, 이 글에서는 이에 대한 다각적인 대책을 검토하여 해결방안을 제시해 보 고자 한다.

• Proceedings of the Korea Society for Industrial Systems Conference
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• 2001.05a
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• pp.288-299
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• 2001

In transcoding, simply reusing the motion vectors extracted from an incoming video bit stream may not result in the best quality because the incoming motion vectors become non-optimal due to the reconstruction errors. To achieve the best video quality possible, a new motion estimation should be performed in the transcoder. An adaptive motion vector refinement is proposed that refines the base motion vector according to the activity of macroblock using intermediate data extracted from an incoming video bit stream. Experimental results shows that the proposed method can improve the video quality to the level achieved by using the full-scale motion estimation with minimal computational complexity.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.12
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• pp.5984-5989
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• 2011

The buckling strength of a pin-ended column may be increased significantly by reinforcing it with an assemblage of cross-arm members rigidly connected to the modpoint of the column and stayed members connecting the ends of the columns and cross-arm members. The purpose of the stays and cross-arm members is to introduce restraint against translation and rotation and thereby decrease the effective buckling length of the column. In this study, buckling strengths of the reinforced columns were quantitatively evaluated from analytical solutions and elastic/inelastic finite elements analysis and the results were compared each other. It was found that the reinforcing system may increase the buckling strength up to 8 times compared to ones without reinforcing system.

• International Area Studies Review
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• v.21 no.4
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• pp.65-83
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• 2017

As Global value chain(GVC) is deepening, the importance of intermediated good trade is growing in international trade issues. Such facts lead to much discussions about the relation between Global Outsourcing and pollution. This study analyzed the effect of Global outsourcing on Environment using the data including 21 industries for 2004-14. $CO_2$ intensity is used as a proxy for the environment variable and to measure Global outsourcing and I employed the method suggested by Feenstra and Hanson(1999), Amiti and Wei(2006). To examine the effect Global outsourcing on the Environment more precisely, this paper controlled the factors that can affect the environment level on the basis of the theory suggested by Copeland and Taylor(1994). In the methodology, System GMM is employed to solve endogenous problem. The results show that for overall industries, Global outsourcing effect cannot be identified and for polluting industries, the result is identical. However, Global outsourcing has a negative effect on the pollution level for China and developing countries. In other words, as Global outsourcing is increasing, the national pollution level is decreasing.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.12 no.6
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• pp.1002-1008
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• 2001

The absorbing structure composed of multi-layered fiber reinforced composite materials was designed and microwave absorbing properties are investigated. On the basis of transmission line theory, the theoretical equations to predict the reflection loss and the appropriate composite material for each functional layer are suggested. The most significant result of this study is the successful design and fabrication of triple-layered composite laminates which has the superior microwave absorbing porperties (more than 10 dB in 4∼12 GHz range), without using the ferrite filler in the impedance transforming layer. In the two-layered composite laminate (absorber/substrate), however, the use of ferrite filler (about 40 wt %) in the absorbing layer is necessary to obtain the certain level of microwave absorbance. By combining the glass-fiber composite with ferrite filler and carbon-fiber composite substrate, the microwave absorbing properties more than 10 dB in 4∼12 GHz frequencies than be obtained.

• Journal of the Korea Society of Computer and Information
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• v.18 no.9
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• pp.201-208
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• 2013

The purpose of this paper is to study the effects of the competitiveness of intermediate goods and enterprise's core competency on customer value and enterprise performance. And it is the first time to investigate the intermediate product competitiveness with the variable of interest to recent corporate values and corporate customers with business performance by exploring their relationships. Intermediate products, which the competitiveness of products that target structure is introduced for the first time, and the relationships between intermediate goods competitive and product reliability, intermediate goods competitive and product innovation are studied in this paper. Further research on integral, modular, valuable, durability, by measuring parameters such as product innovation and product reliability are also conducted. Eight hypotheses are introduced for statistical hypothesis testing. Employees and typical intermediate products in electronic companies in China and South Korea are investigated. SPSS and AMOS models are applied to perform the statistical analysis. Analysis of the proposed models is fit to an acceptable level. Research results and limitations are discussed, and useful conclusions are drawn.

• International Commerce and Information Review
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• v.15 no.3
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• pp.263-287
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• 2013

This study aims to analyse whether outward foreign direct investment(FDI) by Korean manufacturers has a positive or negative effect on the nation's exports and imports. It provides a comprehensive analysis using both micro and macro approaches to overcome the limitations of the previous studies. In its micro-analysis, this study analyzed the impact of the outstanding outward FDI stock and other related factors on net export/import creation using panel data of 589 overseas affiliates of Korean manufacturers during the period of 2006 to 2011. And in the macro-analysis, the study analyzed the impact of outward FDI on exports using panel data of 23 manufacturing sectors during the period of 2000 to 2011. As a result of empirical study, contrary to the results of most previous studies, Korea's export can be negatively affected when it's manufacturing companies increase their outward FDI and localize their overseas businesses.

• Proceedings of the Korea Information Processing Society Conference
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• 2006.05a
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• pp.1405-1408
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• 2006

C++ 언어는 객체지향 프로그래밍 언어로, 기존의 C++ 프로그램은 각각의 플랫폼에 따른 컴파일러를 통해 목적기계의 코드(object code)로 변환되므로 실행되는 플랫폼에 의존적인 단점이 있다. 이러한 단점을 보완하는 방법으로 스택기반의 가상기계와 가상기계의 입력형태인 중간코드를 이용하는 기법이 있다. EVM(Embedded Virtual Machine)은 ANSI C, ISO/IEC C++ 언어와 SUN사의 Java 언어 등을 모두 수용할 수 있는 임베디드 시스템 기반의 가상기계이며, EVM에서 실행되는 중간코드인 SIL(Standard Intermediate Language)은 객체지향 언어와 순차적인 언어를 모두 수용하기 위한 명령 코드의 집합으로 설계되어 있다. 본 논문에서는 C++ 컴파일러를 통해 생성된 SIL 코드가 올바른지 검증하고 원시코드의 분석을 용이하게 하기 위해서 SIL 코드를 어셈블리 코드와 유사한 형태의 재 표현된 C++ 프로그램으로 역컴파일하는 시스템을 설계하고 구현하였다.

• Proceedings of the Korea Technology Innovation Society Conference
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• 2000.05a
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• pp.174-193
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• 2000

본 논문은 초고속 통신망 구축의 핵인 ATM 교환기가 1998-2010년 동안에 국가에 미치는 효과를 경제적 가치와 비경제적 가치로 나누어 평가한 것이다. 경제적 가치는 낙관, 비관 및 중간의 3가지 시나리오에 입각하여 측정한 결과, 명시적 생산유발효과가 약 4조원∼약5조원, 타산업 생산성 증대 효과 등의 묵시적 경제효과는 약 4조원∼약 6조원에 달할 것으로 예상된다. 이에 따라 총 경제적 효과는 약 8조원∼약 11조원으로 추정되었다. 한편 비경제적 가치는 약 18조원∼약31조원에 이를 것으로 나타났다. 따라서 비경제적 효과가 경제적 효과보다 2배 이상 큰 것으로 나타났다. 이유는 ATM 교환기가 중간재 성격을 띄고 있는 기술이기 때문으로 평가된다. 이 결과는 소비재의 경우 경제적 가치가 비경제적 가치보다 크다는 민완기 외(2000)와 설성수 외(2000b)와 대비되는 것이다. 또한 1999년말 경제적 가치는 매우 작은 것으로 나타났는데 이는 시장상황변화에 따라 기술개발효과가 줄었기 때문이다. 이것은 기술예측의 중요성을 말해주고 있다.

• Journal of the Korean Society for Precision Engineering
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• v.17 no.7
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• pp.147-155
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• 2000

To reduce the noise from wood cutting saw at the saw mill(lumber mill) or a construction area, some multi-layer sandwich saw blades which a aluminum or copper plate was inserted between the two steel plates were developed and were tested of the wood cutting noise level at various test places. From the research, it was found that the multi-layer saw blade with copper or aluminum plate between steel plates and spot welded 60 points could reduce the wood cutting sound level about 8.3 dB(97.031 dB - 88.743 dB) at indoor test and 3.8 dB(84.805 - 81.638 dB) at field test.