• Journal of the KSME
• /
• v.31 no.4
• /
• pp.364-379
• /
• 1991

현재 불황산업으로 알려진 기초소재 산업의 대책으로서, 과잉설비의 처리, 원재료 및 에너지 코 스트의 절감, 설비투자의 활성화, 사업의 집약화 등과 병행하여 생산 공정 자체의 혁신, 제품의 고부가가치화 및 신제품의 개발측면에서 강력한 기술개발의 추진이 요구되고 있다. 소재산업 제품의 부가가치, 신제품의 개발 방법으로서 ACM이 이용되고 있다. 또한, 자원에너지 제약을 극복하기 위해서는 에너지를 대체할 수 있는 재료의 개발과, 자원 및 에너지를 절약하는 방법 두 가지가 있다. 구체적 대책의 하나로서, 신규소재를 이용하여 경량강성화된 ACM의 출현이 강하게 요구되고 있다.

• 전기의세계
• /
• v.42 no.12
• /
• pp.34-42
• /
• 1993

고효율 전동기의 국내외 기숙현황을 분석하여 보면 미국, 캐나다, 일본등 선진국에서는 핵심기술을 발전시키는 단계이며, 효과적인 수요관리 프로그램을 마련하여 고효율 전동기의 사용을 확대해 나가고 있다. 따라서 전동기 산업의 국네 경쟁력을 향상시키고, 수요관리 측면에서 적극적인 에너지 절약을 위해서는 고효율 전동기 설계기술, 시험평가기술, 재료기술 및 생산기술 개발에 투자가 이루어 져야하고 정부의 지원하에 산,학,연의 협동체제를 구축하여 체계적이고 대체적으로 추진하여야 할 것이다.

• Proceedings of the Korea Multimedia Society Conference
• /
• 2004.05a
• /
• pp.425-428
• /
• 2004

최근 각광을 받고 있는 RFID는 재고와 제조 유통분야를 중심으로 발전해 오던 바코드를 대체하여 물류유통의 혁명을 초래할 기술로 주목 받고 있다. 그러나 국내의 RFID에 대한 기술 및 자본의 투자는 해외에 비해 미흡한 실정이다. RFID 시스템에서 하나의 인터러게이터 영역에 다수의 트랜스 폰더가 동시에 데이터를 전송하게 되어 데이터 충돌이 발생하게 된다. 본 논문에서는 인터러게이터에서 각 트랜스폰더의 상호 충돌로부터 신뢰성 있게 데이터를 보호하고 해독이 가능하도록 하는 여러 충돌 방지 시스템에 대해서 알아본다.

• Proceedings of the KIPE Conference
• /
• 2016.11a
• /
• pp.196-197
• /
• 2016

신재생 에너지와 배터리를 이용하여 소규모로 계통을 구축하여 부하에 전기를 공급하는 시스템을 Microgrid라 한다. 태양광 모듈과 배터리의 성능 향상 및 가격 경쟁력 강화로 인하여, Microgrid는 오지에 전기를 공급하거나 기존 디젤 발전시설을 대체하거나 운영 비용을 감소하는 용도로 각광 받고 있다. 본 논문에서는 디젤 발전기와 강에서 유체동력 발전기로 전기를 공급하는 시스템에 태양광과 배터리를 설치하여 기존 발전 비용을 최소화 하면서 최단 시간내에 투자 비용을 회수할 수 있는 솔루션을 제안한다.

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
• /
• v.28 no.5
• /
• pp.389-395
• /
• 1999

냉동공조설비, 발전설비, 화학플랜트설비 등에 사용되는 응축기는 주로 증기가 관의 외부에서 응축을 하고 냉각수가 관 내부로 흐르는 쉘-튜브(shell and tube)형 태를 취하고 있다. 초기투자비용 및 운전비용을 줄이기 위해서는 응축기의 열교환 성능을 향상시키는 일이 필수적이며 이를 위해 코팅 표면(coated surfaces), 거친 표면(rough surfaces), 코일 튜브(coiled tubes), 선회 흐름장치(swirl flow), 전열면적을 넓힌 낮은 핀관과 3차원 형상을 갖는 열전달 촉진관의 사용이 제시되고 있다.

• Journal of Korea Technology Innovation Society
• /
• v.10 no.1
• /
• pp.1-21
• /
• 2007

Among numerous policy influencers' and researchers' advices and policy suggestions, there is little opposition to the proposition that technology is essential to the economic development. The role of technology has never been more emphasized than today in Korea as in any other countries. The effects of the government's innovation policy on corporate R&D activities and more broadly the economic welfare of a whole nation are widely recognized with intuitional and empirical evidence. That is, various R&D incentives reduce the marginal cost of a firm's R&D efforts, inducing as much increase of its R&D investment to result in a better chance to acquire target technology. This paper examines the impact of R&D incentives on the technological outcomes by analyzing individual firms' investment behaviors subject to the government's R&D incentive policies. An econometric model of technological outcomes is estimated on a project level with cross-sectional data. "Probit model" is employed for estimations. Special attention was given to the effectiveness of R&D programs by estimating policy impact by types of investment. The data were collected from 928 different R&D projects completed between 1987 and 1993. With the single equation approach, we were able to find that the structure of investment is a far more significant factor in technological outcomes than the total amount of investment. The analysis also shows that the two types of firms' matching investment, in-kind and cash, do not bear a complementary, but a substitutive relations to each other. It also reconfirms the proposition that R&D incentives increase firm's financial investment. Despite many supportive studies emphasizing the cooperation between innovation performers, it is also found that the larger the number of institutions involved in a project, the less likely it leads to a technological success, And meeting the proposed deadlines without postponing is estimated to be a good barometer to predict the outcome of an R&D project. Also the probabilities of success for major variables are represented for policy implications, after calculating marginal effects.

• Journal of Korea Port Economic Association
• /
• v.27 no.2
• /
• pp.297-311
• /
• 2011

This paper deals with a strategic investment decision model for improving investment profit in shipping industry. Despite the quantitative expansion of Korean shipping business, many shipping firms have suffered financial difficulties due to financial and operating risks that result from the characteristics of capital-intensive business as well as of volatility of shipping markets. As a result, managers in charge of making an investment decision, particularly in tramper business sector, are required to take both financial and operating risk factors into consideration. Put it differently, managers are strongly recommended to avoid these risks by ship asset play; buy-low and sell-high, which results in considerable capital gain and cost reduction. In addition, managers in shipping industry are also recommended to consider the ship chartering investment alternative when the freight markets show extreme volatility as the case of 2008 triggered by sub-prime mortgage financial crisis in USA. For example, the BDI suffered plunging down from 1000 in 2008 to 100 in 2010. Consequently, the 4th largest shipping company in Korea, DAEHAN Shipping Co., has collapsed primarily due to excessive tonnage expansion during the peak time of bulk market. In sum, the strategic investment decision model, suggested in this paper, is designed to include such factors as capital gain by asset play, timely chartering for alternative shipping service, and optimization of operating profit by tonnage adjustment in accordance with change in the shipping markets concerned.

• KIPS Transactions on Software and Data Engineering
• /
• v.12 no.9
• /
• pp.419-430
• /
• 2023

Currently, NFTs have no dominant application except for the proof of ownership for digital content, and it also have small liquidity problem, which makes their price difficult to predict. Real estate usually has very high barriers to investment due to its high pricing. Real estate can be converted into NFTs and also divided into small value fungible tokens (FTs), and it can increase the the volume of the investor community due to more liquidity and better accessibility. In this document, we implement and design a system that allows ordinary users can invest on high priced real estate utilizing Black Litterman (BL) model-based Portfolio investment interface. To this end, we target a set of real estates pegged as collateral and issue NFT for the collateral using blockchain. We use oracle to get the current real estate information and to monitor varying real estate prices. After tokenizing real estate into NFTs, we divide the NFTs into easily accessible price FTs, thereby, we can lower prices and provide large liquidity with price volatility limited. In addition, we also implemented BL based asset portfolio interface for effective portfolio composition for investing in multiple of real estates with small investments. Using BL model, investors can fix the asset portfolio. We implemented the whole system using Solidity smart contracts on Flask web framework with public data portals as oracle interfaces.

• KDI Journal of Economic Policy
• /
• v.14 no.3
• /
• pp.3-21
• /
• 1992

By localizing the production of core parts and intermediate goods previously imported from Japan, Korean firms have been striving to increase their market share and profit in the final goods market in which Japanese firms are dominating. Korean producers' efforts, however, have often been thwarted by Japanese suppliers' "strategic" behavior. This competitive strategy involves Japanese exporters supplying parts and intermediate goods at very high prices until Korean firms must locally develop them, and then setting the prices far below the previous level so that the profitability of localization is dramatically reduced, or even means a loss for the Korean manufacturer. This paper intends to explain the strategic behavior of Japanese firms through the concepts of strategic interactions and joint economies. Strategic interactions can be aggressive or accommodating depending on whether competitors are dealing with strategic substitutes or complements. Joint economies exist in multi-stage competition when competition in the previous state favorably influences "profits" of the ensuing stage. Competiton between Korean and Japanese firms (a two-stage game involving production and technology rivalries) can be characterized by joint economies and strategic substitutes: joint economies since technological improvement results in more profits in the production stage; and strategic substitutes since an increase in marginal profits of one firm brings about a decrease in marginal profits of the other in a duopolitic production stage. This implies that the flood of "low price" Japense substitutes is an almost "natural" phenomenon in the context of the duopolistic market described in this paper. In the technology competition stage, on the other hand, technology development and technology transfer can be either strategic complements or substitutes. This implies that, in typical comparative static analyses, the effect of changes in exogenous variables cannot be expected a priori. Thus it becomes very difficult to determine the desirability of applying various policy measures such as countervailing duties, R&D subsidies, and creating demand for localized products. For these reasons, it is indeed likely that the measures suggested as means of circumventing the strategic behavior of Japanese firms (and enhancing technological development of Korean firms) may not work.

• Journal of Technology Innovation
• /
• v.18 no.1
• /
• pp.75-98
• /
• 2010

The purpose of this paper is to give policy implications for relevant policy-makers by analyzing factors affecting performance of industrial R&D programs of the Ministry of Knowledge Economy. The independent variables are type of project leader organization(Big Enterprises, SMEs, Ventures Businesses, Public Research Institutions, Universities), cooperative or noncooperative R&D among industry-university-research institution, total number of project participant organization, total R&D investment, and the ratio of private investment to total R&D investment. The dependent variables are domestic or foreign patents granted and domestic or foreign papers accepted. The method of analysis is Poisson Regression analysis operated by STATA. The results of this research are follows ; Universities show higher R&D performance compared to enterprises or public research institutions in terms of patents and papers as well. Venture businesses show higher patent performance compared to SMEs. Inverted U-shaped relationship between total number of project participant organization and R&D performance is not supported. The higher total R&D investment, the higher R&D performance. The higher the ratio of private investment to total R&D investment, the higher R&D performance.