• Proceedings of the Acoustical Society of Korea Conference
• /
• autumn
• /
• pp.57-60
• /
• 2004

본 논문에서는 음성정보기술산업지원센터(SiTEC)에서 현재 배포중인 고소음 환경 음성 DB를 이용하여 air-conducted 음성과 body-conducted 음성의 인식 성능을 비교 실험하였다. 소음 환경에서 일반적인 마이크로폰으로부터 수집된 air-conducted 음성은 잡음의 영향을 받기 쉬우며 이는 인식률을 저하시킨다. 반면에 진동 픽업 마이크로폰에서 수집된 body-conducted 음성은 소음에 보다 강인한 특성을 보인다. 이러한 특성에 근거하여 소음 환경에서 일반 다이나믹 마이크로폰 음성에 음질 개선 방법과 채널 보상 방법을 적용한 인식 결과와 3종류의 진동 픽업 마이크로폰에서 수집된 음성과의 인식 성능을 비교 분석하여 body-conducted 음성 인식 시스템의 환용 가능성을 살펴보았다.

• Journal of the Korean Society of Industry Convergence
• /
• v.5 no.3
• /
• pp.209-212
• /
• 2002

The change of surface structures for the deposition of Sn, In on clean Si(111) surface is investigated as a function of surface coverage by RHEED system. For tin submonolayer films $7{\times}7$, ${\sqrt{3}}{\times}{\sqrt{3}}$ structures are observed depending on the coverage and substrate temperature. For indium submonolayer films $7{\times}7$, ${\sqrt{3}}{\times}{\sqrt{3}}$, ${\sqrt{31}}{\times}{\sqrt{31}}$, $1{\times}1$ structures are observed. We find that at substrate temperature of $500^{\circ}C$, ${\sqrt{3}}{\times}{\sqrt{3}}$ structure is formed at tin coverages of 0.2~0.4 ML and at indium coverages of 0.1~0.3 ML, respectively. From the desorption process, the desorption energies of Sn, In in ${\sqrt{3}}{\times}{\sqrt{3}}$ structure is observed to he 3.25 eV, 2.66eV, respectively.

• 한국IT서비스학회:학술대회논문집
• /
• 2002.06a
• /
• pp.341-346
• /
• 2002

현재의 우리나라 SI 관련 산업 분류체계는 상세한 수준의 분류가 이루어지지 못하고 있을 뿐 아니라 새로운 기술 및 산업계의 변화를 적시에 반영시키지 못하는 단점이 있다. SI 분야 산업 발전에 따라 보다 정확한 세부분야 별 생산성 및 매출액 등의 데이터가 필요할 뿐만 아니라 적극적인 수출품목으로의 육성을 위하여 국제적인 분류체계와도 일관성을 가져야 할 필요성이 대두되고 있다. 본 연구에서는 기존의 국내 외 SI 산업 분류체계의 장단점을 분석한 후 목적중심적인 새로운 SI 분류체계를 제안한다.

• Journal of Information Technology Services
• /
• v.2 no.2
• /
• pp.1-14
• /
• 2003

In this study, we report the summary characteristics of CEOs of SI firms in Korea. In the first part of our paper, age, educational background, and career of CEOs in SI firms are analyzed according to CEO types (owners versus professional managers). In the second part, CEO tenures of Si firms in Korea are compared with those in the U.S. and Japan. We found that CEO tenures of SI firms in Korea are remarkably shorter than those in the U.S. and Japan. In conclusion, we contend that CEO systems in Korean firms should be improved to guarantee the longer tenures especially for professional managers.

• Electronics and Telecommunications Trends
• /
• v.33 no.6
• /
• pp.1-11
• /
• 2018

Several industrial applications such as space exploration, aerospace, automotive, the downhole oil and gas industry, and geothermal power plants require specific electronic systems under extremely high temperatures. For the majority of such applications, silicon-based technologies (bulk silicon, silicon-on-insulator) are limited by their maximum operating temperature. Silicon carbide (SiC) has been recognized as one of the prime candidates for providing the desired semiconductor in extremely high-temperature applications. In addition, it has become particularly interesting owing to a Si-compatible process technology for dedicated devices and integrated circuits. This paper briefly introduces a variety of SiC-based integrated circuits for use under extremely high temperatures and covers the technology trend of SiC CMOS devices and processes including the useful implementation of SiC ICs.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2017.04a
• /
• pp.595-597
• /
• 2017

Despite rapid growth of the global SW market, the Korean market still has a long way to go to impact global power nations. What is the reason that holds back of the No. 1 high-speed Internet country in terms of SW development? It is lack of the foundation for development of the Korean SW industry. In this context, the Korean government declared SW-oriented society and developed polices for each sector; Regarding movement that tries to apply the SW partitioning order institution in public sector to IT projects, this research aims to study SI project problems expected when conducting the SW partitioning order institution and improvements focusing on the public sector that accounts for about 30% of the entire SW industry. SW partitioning order institution is divided into planning-design and development-realization stages, which may cause problems when it is applied to SI projects. As such, the study analyzed SI projects and separate and partitioning order, exemplary cases and examples of industrial projects related to partitioning order, and drew improvement measures from institutional, technological and managerial viewpoints. The research aims to help people involved in IT projects sell SW at proper prices and improve the environment, and presents directions to create a system that strengthens competitiveness of the SW industry and SI projects by providing solutions to problems that suppliers and demanders should recognize before implementing the SW partitioning order institution.

• Journal of the Korean Ceramic Society
• /
• v.49 no.5
• /
• pp.412-416
• /
• 2012

Porous SiC ceramics were prepared by using recycled SiC sludge, which is an industrial waste generated from solar cell industry. Polycarbosilane derivatives, such as polycarbosilane (PCS), polyphenylcarbosilane (PPCS) and hydridopolycarbosilane (HPCS) were used as binding agents for the fabrication of porous SiC ceramics at $1800^{\circ}C$ under Ar atmosphere. The effects of the various binding agents having different C/Si ratios were discussed on the sintering and porosity of the SiC ceramics. The prepared porous SiC ceramics were characterized by X-ray Diffraction (XRD) and Field-Emission Scanning Electron Microscope (FE-SEM). Thermal conductivity and porosity of SiC ceramics were measured at room temperature, and they were 56.7W/mK and 29.8%, respectively.

• Proceedings of the Korea Association of Crystal Growth Conference
• /
• 1996.06a
• /
• pp.88-138
• /
• 1996

Electronics grew up to the largest industry in the world supported by Si wafer. In near future, the Si wafer may use 300mm in diameter for economic requirement. This size wafer may use to produce large logic chip, 256Mbit DRAM, and other large complex and high density chip. Then, the quality including flatness and crustal characters may be required very high performance. And, their price should be reasonable and high quantity may be required. These requirements should be solve lot of hard problems of crystal growth, wafering mechanical processing and their cost problems. In this presentation, I may discuss following items.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.24 no.10
• /
• pp.1384-1389
• /
• 2020

Although the fintech industry is developing rapidly around the world, the domestic development situation is rather slow compared to the speed. Therefore, the future development direction can be set by analyzing the current status of the fintech industry in order to suggest the direction of development in the domestic fintech industry. The main services provided by companies belonging to the domestic fintech industry are in the areas of remittance settlement, financial investment, asset management, crowdfunding, P2P finance, overseas remittance, fintech SI, insurtech, virtual currency, security, and authentication. It is divided into. This study identifies the main technologies used in the service and grasps the current domestic status. In addition, it analyzes the distribution of workers by each service. This study is expected to play an important role in the development of the financial industry through technical analysis of fintech companies.

• Journal of Information Technology Services
• /
• v.1 no.1
• /
• pp.7-15
• /
• 2002

The role of SI in this IT era is recognized high as a value-creating activity in the overall industries. But the valuation factors are not so attractive compared to other industries. Among the negative factors are the relatively high cost of sales and operating cost, the lack of technical differentiation among the firms, the low level of entry barrier, and the resulting competition in the SI industry. But some positive factors such as the expectation for the overall introduction of IT into eoconomy, development of SM (System Management) projects, and the sales of developed soultions and components increase the value of SI firms.