• Journal of the Korean Society of Manufacturing Technology Engineers
• /
• v.12 no.2
• /
• pp.12-22
• /
• 2003

• Journal of the Korean Society of Manufacturing Technology Engineers
• /
• v.18 no.4
• /
• pp.7-22
• /
• 2009

• Journal of the Economic Geographical Society of Korea
• /
• v.9 no.2
• /
• pp.243-260
• /
• 2006

The continuing enlargement, deepening integration of EU and penetration of extra-EU enterprise into EU market are forming a new geographical restructure of the production system. In this paper, I analyse the changing geography of the EU automotive production system. The globalization and regionalisation of production activity intensify a competition among the enterprise. The European automotive production system changes to a platform system and a modular system for a diminution of productive costs, a development of various products and a frequent innovation of products. The European automotive enterprise is restructuring geographically the production functions and products in order to promote efficiency on a new production system, enlarged production space and intensified economic integration. The European automotive industry tends to a spatial specialization and agglomeration according to the locational factors of production functions and products and the locational condition of regions. This intensifies the geographical hierarchic structure of production activity between the core and the periphery.

• Economic Analysis
• /
• v.25 no.3
• /
• pp.1-29
• /
• 2019

This paper examines the impact of a dual labor market structure on labor productivity using unbalanced panel data from 29 OECD member countries between 1990 and 2015. By applying a variety of regression models on the panel data (e.g., a pooled regression, a fixed effects model and a GMM), we explore how changes in worker-type composition among temporary, permanent and self-employed workers contribute to productivity growth. While it appears that our results differ slightly, depending on the econometric models, overall an increase in the share of permanent workers leads to a relatively higher increase in productivity growth. On the other hand, it is also seen that the effects of the share of temporary workers on labor productivity are considerably lower than that of permanent and self-employed workers. To sum it up, our findings indicate that an increase in temporary workers could have an adverse effect on labor productivity.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2004.05a
• /
• pp.319-319
• /
• 2004

최근 컴퓨터 기술의 급속한 발전과 함께, 생산품질의 향상과 생산주기의 단축을 목적으로 유한요소법(FEM)과 다물체 동역학(multi-body dynamics)과 같은 시뮬레이션 기술(math-based engineering)이 산업계 전반에 폭넓게 적용되고 있다. 생산시스템 분야에서는 디지털 생산기술(digital manufacturing) 및 가상 생산기술(virtual manufacturing)의 개념이 소개되면서 생산시스템의 모델링 및 시뮬레이션에 관한 연구가 활발히 시도되고 있다. 그러나 아직까지 대부분의 시뮬레이션 기술이 구조해석과 같은 제한적으로 부문에서만 활용되고 있는 실정이며, 시뮬레이션 모델은 대상이 되었던 몇몇 특수한 경우에 제한적으로 사용될 수 있는 등의 한계를 보여 왔다.(중략)

• Proceedings of the Computational Structural Engineering Institute Conference
• /
• 2010.04a
• /
• pp.521-524
• /
• 2010

현재 국내에서는 상품 생산을 위한 각 공정의 업무를 통합관리 해 줄 수 있는 PLM(Product Life-cycle Management)시스템을 건설업에 도입하려는 움직임이 있으며 실제 건설 구조물에 대한 통합환경 시스템인 CPLM(Construction Product Lifecycle Management) 관련 연구를 진행 중에 있다. 통합 시스템 내에서 건설 구조물 생산을 위한 각 업무분야에서는 시스템이 추구하는 업무진행의 흐름에 맞추어 작업을 수행 할 수 있도록 하는 각자의 프로세스를 개발해야 한다. 이 연구에서는 토목구조물을 대상으로 협업환경 내에서 활용 가능한 3D 정보모델인 BIM기반의 해석 및 설계 프로세스를 구축하고 국내외 토목건설산업 분야에서 차세대 설계프로세스로 유력한 BIM기반의 구조해석 및 설계 프로세스의 실용화를 위한 기초자료를 제공함을 목적으로 하며 해석 및 설계 대상 구조물로 아치교량을 선정하여 연구를 진행하였다.

• International Area Studies Review
• /
• v.16 no.3
• /
• pp.119-134
• /
• 2012

This paper examines the shift to service economy in the developed countries including Korea and analyzes whether Baumol's cost disease hypothesis could explain the labor productivity growth in the developed countries even though the share of service industry is rising rapidly. We have found the following results: First, the shift to service economy is widely observed in the developed countries. Second, the productivity gap between manufacturing and service industry is widening as a result of stagnant productivity growth in service industry. Third, however, the productivity in the whole economy is still growing because of the large productivity differences among the sub-industries in service industry. Fourth, we have found that the productivities of some service industries, such as finance, communication, business service, etc., are almost same or larger than the productivity of manufacturing industry. From this fact it is likely that the productivity of the whole economy could grow in spite of the stagnant productivity growth in service industry.

• Applied Chemistry for Engineering
• /
• v.16 no.2
• /
• pp.257-261
• /
• 2005

The microbial cellulose is in a form of three dimensional net structures that consists of 20~50 nm fibrils. It possesses high crystallinity and orientation. It is difficult to synthesize large amount of fibrous carbon nanomaterials by the carbonization process using raw materials such as polyacrylonitrile (PAN), regenerated cellulose (Rayon) and pitch. However, it seems possible thru the application of microbial cellulose as raw material. The application of such cellulose can be further extended to the synthesis of highly oriented graphite fiber. Out of three different cellulose-producing strains, G. xylinus ATCC11142 was chosen as it has the highest productivity (0.066 g dried cellulose/15 mL medium). Tar is often produced during the carbonization of cellulose that limits the formation fibrous structure of the carbonized sample. In order to solve such a problem, pre-studied purification methods of carbon nanotube such as liquid phase oxidation, gas phase oxidation and filtration associated with ultrasonication were applied at the carbonized cellulose. In that case. only by filtration associated with ultrasonication, improved the formation of fiber structure of the carbonized cellulose.

• Korean Journal of Construction Engineering and Management
• /
• v.21 no.1
• /
• pp.99-110
• /
• 2020

Productivity is also a very important indicator in the construction industry as it can measure economic growth and the efficiency of each related production activity, either at the industrial level or at the corporate level. Technical factors indeed have a great impact on productivity, but in order to improve productivity in the actual construction industry, various productivity factors must be analyzed first, and the efforts to improve productivity at the project level are more important than the efforts to improve productivity at the construction industry level, which are addressed from a macro perspective. This study was designed to provide basic data for efficient productivity management activities of the project by selecting priority management factors through the causal analysis of the factors and the elicitation of the productivity degradation factors at the construction site to improve the quality of the construction industry.

• Journal of the Economic Geographical Society of Korea
• /
• v.11 no.1
• /
• pp.45-58
• /
• 2008

This study aims to analyze the interregional trade and industrial linkage between the Incheon regional economy and the rest of the nation. An interregional input-output table developed by the Bank of Korea's Incheon branch(2007) was employed for this. The analysis of interregional trade shows that Incheon regional economy is strongly interrelated with Seoul and Gyeonggi regional economies. The Incheon's interregional relationship with other regions was analyzed in terms of output dependency rate, output inducement rate, backward linkage, and forward linkage. The results indicated that while the output of Incheon is more dependent on final demands in Seoul and Gyeonggi, changes of the final demand in Incheon cause more output in the rest of nation than that in Seoul and Gyeonggi. Also, while Incheon's backward linkage to Seoul and Gyeonggi is weaker than that to the rest of nation, Incheon's forward linkage to Seoul and Gyeonggi is stronger than that to the rest of nation.