• Journal of ILASS-Korea
• /
• v.25 no.4
• /
• pp.170-177
• /
• 2020

Stoichiometric combustion in spark ignition (SI) engines has an advantage of meeting future stringent emission regulations. However, the drawback of the combustion is a lower thermal efficiency than that of lean burn. In this study, energy losses in a natural gas stoichiometric SI engine generator were analyzed to establish a strategy for improving the generating efficiency (GE). The energy losses were investigated based on dynamometer and load bank experiments. As the intake manifold pressure increased in the dynamometer experiment, the brake thermal efficiency (BTE) increased mainly due to the reduction in the pumping and mechanical losses. In the load bank experiment, the generating power and GE increased with the increased intake manifold pressure. The generating power and GE were lower than the brake power and BTE due to the cooling fan power and the losses in the generator.

• Journal of ILASS-Korea
• /
• v.29 no.2
• /
• pp.60-67
• /
• 2024

This study compared exhaust gas recirculation (EGR) and excess air strategies for improving thermal efficiency and emissions of hydrogen combustion engines at low-load operation. The experimental investigation was conducted in a single-cylinder, heavy-duty engine under throttling and wide-open throttle (WOT) conditions. Although both EGR and excess air strategies reduced peak heat release rates and increased combustion durations, the net indicated thermal efficiencies were improved by reducing the pumping losses. Under the constraint of similar nitrogen oxides emissions, the EGR strategy had higher net indicated thermal efficiencies compared to the excess air strategy in throttling operation. However, the difference between their thermal efficiencies was reduced under WOT condition. The trend of reducing nitrogen oxides emissions according to the two strategies was similar.

• The Science & Technology
• /
• v.30 no.11 s.342
• /
• pp.88-89
• /
• 1997

55년 동일상사로 창업해 과학기기와 의료기기를 수입하던 오퍼상을 모체로한 (주)디아이는 수입장비들을 전량 국산화하겠다는 경영자의 의지에 따라 반도체소자 및 LCD검사장비 전문제조업체로 변신해 눈부신 성장을 하고 있다. 24명의 연구원을 두고 70억원에 달하는 연구비를 투자한 (주)디아이는 국내 최초로 'Test Burn-in System'의 국산화에 성공하는 등 21세기 초일류기업을 목표로 전 사원이 땀을 흘리고 있다.

• Electronics and Telecommunications Trends
• /
• v.14 no.3 s.57
• /
• pp.106-119
• /
• 1999

본 고는 미래의 핵심산업으로 부상하고 있는 멀티미디어 산업을 전략적으로 육성하기 위해 필요한 국내 산업기반으로서 멀티미디어폴리스에 대한 정책방안의 도출을 목적으로 하고 있다. 먼저 광주의 첨단과학산업단지, 인천의 송도 미디어밸리, 대전의 창업기업, 파주의 출판문화정보산업단지, 서울의 양재/포디어 산업 관련 산업단지에 대한 실태를 파악하였으며, 멀티미디어 조성에 따른 시사점을 도출하였다. 나아가 멀티미디어폴리스를 조성함에 있어서 고려되어야 할 사항들을 신규단지 조성 필요성, 조성주체, 조성지역으로 구분하여 고찰하였다.

• The Science & Technology
• /
• v.31 no.2 s.345
• /
• pp.98-99
• /
• 1998

1993년 창업한 영림원은 개인정보관리 PIM과 전사적자원관리 ERP시스템을 개척한 벤처기업이다. 베스트셀러중의 하나로 손꼽힌다는 개인정보관리 'K실록'과 한국형 ERP를 국내에 토착시킨 'K.시스템'은 영림원 28명의 직원중 연구원 20여명이 1년반동안 7∼8억원의 막대한 연구비를 투입해 얻어낸 결실이라고 한다.

• KDI Journal of Economic Policy
• /
• v.28 no.1
• /
• pp.219-231
• /
• 2006

This paper presents a dynamic analysis of the interaction between incumbent firms and successful new entrepreneurs, that can provide R&D incentives when innovations are cumulative/sequential. It is argued that the insights of the basic model extend to varying market structures and regulatory environments.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
• /
• v.7 no.2
• /
• pp.129-140
• /
• 2012

Korea Atomic Energy Research Institute(KAERI) invested the technology and made the Research Institute Company, SunBioTech with Korea Colma in 2006. It is the first Research Institute Company, based on the 'Law for Daedeok Innopolis Development'. this company made a product of HemoHim which is the supportive functional food for the cancer treatment. This technology is very unique and get the Triad Patent Families. This paper deal with the new technology based innovation and the product is very sensitive because of the consumer oriented. We study the successful technology commercialization process of HemoHim and suggest a implication for the company and decision makers.

• Journal of Technology Innovation
• /
• v.29 no.2
• /
• pp.59-85
• /
• 2021

This study aims to examine whether the characteristics such as a start-up company, possessing a research organization, and benefiting from government R&D programs significantly contributed to the conversion of marginal companies to normal companies, from the viewpoint of technological innovation. The result shows supporting government R&D programs to start-up companies that have become a marginal company positively contributes to the transition to a normal company, centering on the high-tech industry. In addition, it was confirmed that the research organization of marginal companies positively contributed to the transition to a normal company. These results imply that a paradigm shift from the existing industrial policy focusing on restructuring of marginal companies to a selective support policy for marginal companies with a high possibility of transition to normal companies is strongly needed. It is also necessary to strengthen the strategic use of government R&D programs to support the transition of a marginal company to a normal company.

• Journal of the Economic Geographical Society of Korea
• /
• v.26 no.3
• /
• pp.190-201
• /
• 2023

This study conducted an in-depth case study of bio-health companies in the Chungcheong region to examine the factors influencing the relocation of new industry cluster firms in non-metropolitan areas. Focusing on the experiences and perceptions of key stakeholders within the cluster, which have been relatively overlooked in previous research, this narrative research explored the factors that lead entrepreneurs who initially founded their businesses in non-metropolitan areas to relocate to metropolitan areas as well as the decision-making process involved. Through interviews with 61 key stakeholders within the Chungcheong cluster, it was observed that entrepreneurs receive various benefits from local stakeholders during the initial stages of entrepreneurship. However, as the company enters a phase of significant growth, matters such as securing specialized talent and market accessibility lead them to contemplate relocating to metropolitan areas. Based on case studies of companies that both remained and relocated in the Chungcheong region, this study examines structural drawbacks within non-metropolitan clusters and provides policy implications.

• Journal of Information Management
• /
• v.29 no.2
• /
• pp.1-17
• /
• 1998

The Inno-NET, which is based on the Internet and up-to-date information technology, is a consolidated system to provide business-related information and to solve the difficulties in business activities. In particular, the Inno-NET is an information system to integrate such business information for enterprise as start-up, financing, technology development, recruiting, site acquisition, marketing, trade and investment and so on, in order to help companies solve their problems and make up for their weak points. Accordingly, the Inno-NET will systematically connect supporting agencies and innovative enterprises, thus guaranteeing the exchange of information among them and coordinating the business. The supporting agencies will be included government offices, public organizations, research institutes, universities, and industrial associations all over the ministries. In short, Inno-NET forms a real-time decision making system among government, industries, universities and research institutes. by elt:ictronic networking on the Internet.