• Journal of Labour Economics
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• v.34 no.1
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• pp.33-69
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• 2011

This study analyses a productivity effect by E&T and R&D activities via estimation of E&T stock, R&D stock, and patent stock in a corporate level. Particularly, the analysis reflects the effects of skilled training after estimating E&T stock from E&T flow. When a spillover effect of E&T is analyzed, a methodology using technical proximity concept becomes a new experiment. Also classifying long and short term effects from the usage of Dynamic Panel Data Analysis becomes a new trial, too. The results of study appear that the productivity effects from E&T investments are relatively lager than R&D investments. Through spillover effects and long-term effects E&T and R&D activities have a strong influence on the corporate's productivity.

• Proceedings of the Korean Information Science Society Conference
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• 2007.10c
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• pp.125-129
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• 2007

최근 들어 국방부는 RFID 기술을 기반으로 u-군수통합정보체계를 구축하기 위해 국방탄약관리 시스템 구축사업과 확산사업 그리고 F-l5K 자산관리 사업을 진행하였지만 국방 RFID 태그 코드의 표준화 부재로 임시방편적인 방법을 사용하고 있다. 따라서 국방 분야에서 어떠한 RFID 태그 코드사용이 바람직한지 영역의 표준과 경제성, 관리성, 확장성, 네트워크 환경, 정책적 사항, 그리고 미군의 활용사례 등에 관한 다양한 관점을 분석하여 코드를 선정하는데 도움이 되도록 하였다.

• Journal of Korea Port Economic Association
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• v.24 no.4
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• pp.349-361
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• 2008

There has been abundant empirical research undertaken on the technical efficiency of Korean ports. Most studies have focused on the use of parametric and non-parametric techniques to analyse overall technical efficiency. This paper utilizes data for the period 2000-07 to offer a heterogeneous perspective on the overall efficiency of Korean ports. The framework assumes that ports use one input to produce one output; the output and input include port export(import) and regional export(import). This paper also employs panel analysis and heteroscedastic Tobit model to show the effect of the explanatory variables on the port efficiencies. The panel analysis shows that the regional export/total export has negative effect on the export efficiency while the regional import/total import has not any relations with the import efficiency. The heteroskedastic Tobit model shows that both regional export ratio and regional import ratio have negative effects on the efficiency while the gross regional domestic product has not any significant relations with the import efficiency.

• Environmental and Resource Economics Review
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• v.18 no.2
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• pp.345-375
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• 2009

In this paper we examined the impact of mineral resources industry on the national economy and necessity of a mineral resources cycle technology development. For this purpose, the case study on Gagok polymetallic (zinc-lead-copper) mine, which is being re-developed, was carried out to study an anticipated effects of application of the full cycle technology. As a consequences of the study, if we apply the technology to a polymetallic (zinc-lead-cooper) mine, we can expect 55 billion won worth of import-substitution effect. Moreover, if applied to 10 similar mines, we can expect the 10.4% of import-substitution effect of the total imports annually. Also, national competitiveness in value chain of mineral industry will be promoted through the technological advancement in upper stream and the full cycle technology will render a service to the mineral industry to be the country's new growth engine.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.9
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• pp.508-517
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• 2018

This study evaluated the construction costs of 11 design cases to decrease the horizontal forces applied to an abutment. They include two kinds of abutment types, which are used to improve the backfill materials for reversed T-shaped abutment and geosynthehtic reinforced abutment for railways (RAR). In the first economic analysis, the internal friction angles of the backfill materials were increased from ${\Phi}=35^{\circ}$ to ${\Phi}=40^{\circ}$ and $50^{\circ}$ for a reversed T-shaped abutment. The second analysis examined cases with the design of a geosynthehtic RAR. When the friction angles were $40^{\circ}$ or $50^{\circ}$ after improvement of the backfill material, the reduction in the construction cost of the abutment was not as large (2.0-3.9%), even though the horizontal forces on the abutment were decreased by 18-48%. However, in the case of applying the RAR, a maximum cost reduction of 30% was achieved by decreasing the horizontal force to zero. The cost reduction results from the decreased wall thickness, base slab size, and the number of pile foundations for the abutment, as well as changing the material.

• Journal of Technology Innovation
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• v.30 no.3
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• pp.35-64
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• 2022

Currently, The budget expenditure for national R&D has been on the rise, and the quantitative performance in national R&D programs has been increasing accordingly. However, a growth of qualitative performance can not reach to an upward trend of quantitative performance. For a poor qualitative performance such as patent grades and technologies with low efficiency of technology transfer, the performance evaluation centered on "number of cases" is necessary to improve and start to introduce various "qualitative performance indicators". This paper focuses on "Triadic Patent Families" being measurable the overseas competitiveness of patent applied in major countries(the US, Europe and Japan). It analyzes the influencing factors to evaluate the quality of qualitative performance of R&D program. The result of this analysis shows a significant effect on the creating of triadic patent families within factors of R&D scale and project characteristics. This paper is significantly meaningful to expand insufficient triadic patent families to the target of interest rather than early study relatively, and to analyze the influencing factors of the creation of triadic patent families.

• Journal of agriculture & life science
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• v.46 no.5
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• pp.153-165
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• 2012

The purpose of this study is to analyze the acceptance about new seed of Chinese cabbage and to analyze the factors affecting continuous use. Research model was derived based on the Technology Acceptance Model(TAM), the analysis was performed using Partial Least Squares(PLS). The factors significantly affecting the use of new seed of Chinese cabbage are innovativeness and seed promotion in antecedent variables and perceived usefulness in parameter variables, which have strong positive relationship among them. Therefore, efforts such as development and diffusion of high quality seed and securing a market for Chinese cabbage of new seed are necessary for improving perceived usefulness. Since these efforts including seed promotion can enhance the farmers' acceptance of new seed and reduce the risk that farmers would face in introducing new seed, these can also be very helpful in enhancing the farmers' innovativeness.

• Journal of Korea Technology Innovation Society
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• v.18 no.2
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• pp.264-291
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• 2015

This research is to empirically analyze the effects of governmental policy including R&D subsidiary and tax reduction, which are both direct and indirect financial supports, during the examination period (2007~2009). The analysis was based on 2,751 firms that received governmental support via both R&D subsidiary and tax reduction with 7,038 panel events during the economic recession (2008~2009) and found that governmental support drives R&D investment of firms during the recession. The contribution of this research is that investigation of policy effectiveness categorized by firm sizes, particularly during the economic crisis. The result of the study is that during the recession, large firms had more elasticity increase towards tax reduction whereas smaller firms and ventures had it towards direct financial subsidiary. The elasticity increase of both large and small firms was in positive association with firms' R&D investment. The result indicates that government support obviously has positive influence on R&D investment of firms during the crisis, even enforcing the investment.

• Journal of Engineering Education Research
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• v.12 no.3
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• pp.21-30
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• 2009

The purpose of this study is to survey on the engineer's sense of value. For this, we analyzed the ethic code of the engineer relation groups and executed the survey of consulting committee. The subjects of analysis were six associations related to engineer, and analysis of the ethics was done on the basis of 'four levels of engineer's ethics or sense of value'. The subjects of survey were 57 professions. The ethic code shows the most important engineer's sense of value is dignity maintenance, development of individual and social welfare as well as public service. The survey shows the most important sense of value when engineer make decisions at the present is practicality and economical efficiency. And it shows the most important sense of value when engineer make decisions in the future is practicality and economical efficiency.

• Journal of the Economic Geographical Society of Korea
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• v.22 no.2
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• pp.111-122
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• 2019

This study attempts to analyze the critical issues of globalization and present an alternative framework that places ICT in the function of development in comparative perspective. To adjudicate the controversies concerning the effect of developmental factors, it examines the determinants of global trend that leads to the comprehensive mechanism of ICT and cultural residues. The advent of the global community in cyber space requires a new balancing point by the mode of communication and culture among all societies and operation with decentralized authority. This interdependence, by providing diverse network structures and participating in cyberspace, includes the power shift from the dynamics of international relations with voluntary collaboration and brings some important implications for a global empathetic society.