• Proceedings of the KIEE Conference
• /
• 2007.10a
• /
• pp.287-288
• /
• 2007

This paper is for a Real-time Active Control System to operate a boiler. By sensing of flame we wanted to get status of a furnace as many as possible, like load, efficiency, and/or amount of pollutant. These data can be used to make optimal running point by controlling the ratio of air and fuel. So the last object is to make a closed actual control loop from optical head to valve controllers. The first job was to design and to develop a optical data acquisition system. including optical sensor module. And we gathered flame data in variable situations for taking the trend of flame against burning environment. Currently we are developing a general system model, designing some control strategy and testing this active control system.

• Electrical & Electronic Materials
• /
• v.6 no.4
• /
• pp.290-301
• /
• 1993

최근 전기전자재료 분야에서 유기재료의 초박막화 기술이 주목되고 있다. 유기재료는 구성하는 유기분자에 여러가지 기능을 부여할 수 있기 때문에 무기재료 이상의 기능 또는 무기재료에서는 나타나지 않던 새로운 기능의 발현이 가능하기 때문에 오늘날 관심의 대상이 되고 있다. 이와같이 분자자체가 가지고 있는 기능을 추구하여 가면 궁극적으로는 분자소자의 제안에서처럼 분자를 1개씩 단위로 하여 조립하여 희망의 소자를 구축하는 것이 가능할 것이다. 그러나 현실적으로 우리들 주변에 있는 기술로서 이와같은 분자소자를 실현한다는 것은 아직 시기상조이지만 집합체로서 유기분자를 활용하거나 분자가 가진 기능을 효율 좋게 이용할 수 있다면 현시점에서도 가능할 것으로 생각된다. 따라서 이를 위한 구체적인 방법으로서 박막화가 생각되었으며 그 수단으로서 유기초박막제작기술이 있다.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2015.05a
• /
• pp.215-216
• /
• 2015

In order to facilitate the introduction of BIM technology in the construction project of fact, many countries such as Singapore and the United States, is developing a roadmap of BIM technology development. To develop this, recently, it must be analyzed in advance the state of BIM technology domestic projects. In this study, we define the elements of technology BIM, and analyzed the current situation. In addition, I was evaluated and priority importance to the elemental technology derived. As a result, elemental technology most was the level inferior to foreign countries, and the field of ordering standard planning and has been highly valued and priority of particular importance, but currently, the level of domestic, analysis and most delayed has been. These results are judged to be useful in the development of the roadmap and direction of technological development of BIM in the future.

• Proceedings of the KSR Conference
• /
• 2002.05a
• /
• pp.94-99
• /
• 2002

The traffic policy of a city in Korea has brought to many traffic problems by putting emphasis on the only side of mobility in the past that the personal transportation was put first in importance more than the public transportation. As the result of this policy, in the process that the traffic policy of large cities in Korea changes into accessibility, it is shown for re-lighting up the development of the public transportation to be going to be able to get many suggestions in searching for the desirable developing direction of the new means of transportation that will arrive at Korea in the future. Especially, compared with the policy of U.S.A. on the traffic plan that has concentrated on the road and the vehicle, and that of Europe that has put first in the walking and the public transportation system, it is considered as an important thing that the lesson is given to us about what is important for the desirable city development. Transportation can be divided into four; a railroad transportation. a road transportation, a marine transportation, and an aerial transportation.

• Proceedings of the KSR Conference
• /
• 2005.11a
• /
• pp.1051-1055
• /
• 2005

In this paper, the trend of the market demand for the technology of railway cars and the development direction of other country or company were studied by analysing the patent map. The effort for developing the technology is intensified from the middle of 1960s and it seems to be more strengthened especially in the parts of bogie, driving motor/power, window and door. Recently the increasing rate of the number of patent application from Germany and China is noticeable. The results of this paper can be used for making the development plans of competitive technologies and benchmarking of them.

• Proceedings of the SCSK Conference
• /
• 2003.09b
• /
• pp.308-312
• /
• 2003

Recently the trend of new materials development is extensively and very actively progressing in the study of physical and chemical characteristics developing a totally new material along with the study field of recently discovered material modifying physically and chemically characteristics. Among these fields of studies, one method to improve adaptation of inorganic material is the study of mesoporous materials. The most general way to synthesize mesoporous materials is to mold the very systematical mesopore into a corpuscle by using templates(omitted)

• Proceedings of the KSR Conference
• /
• 2002.10a
• /
• pp.434-439
• /
• 2002

The researches on the direct drive system, which directly transfers axle load of the traction motor to wheels, have been developed as a next generation drive system in Japan and Europe. As a result of excluding couplings and gear units, the direct drive system has advantages on the bogie mount space to be smaller sized, lower noisy, more efficient and less weighted than the conventional drive system - indirect drive system. Since the simplification of the direct drive system design depends on the design of the traction motors, the researches on the direct drive system with focusing on the traction motors get started. The advantages/disadvantages of direct drive system, types, structures, cooling systems and interfaces of the traction motors are presented on this paper. Furthermore, the development of other countries on the electric equipments of the next generation railway vehicles are discussed and the necessity ＆ requirement for developing new concepts of traction motors are assured.

• Proceedings of the Korean Vacuum Society Conference
• /
• 1999.07a
• /
• pp.82-82
• /
• 1999

Ferroelectric materials are characterized by the existence of a spontaneous remnant polarization that can be switched between two stable states by an applied field. This phenomenon is known as ferroelectricity. The ferroelectricity can be utilized for nonvolatile memory application. Up to now 256K FRAM was successfully fabricated and sold in the memory market. This paper will briefly review the current statue of ferroelectric random access memory (FRAM) focusing on recent developments. In addition, the future prospects of FRAM will be addressed.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.40 no.1
• /
• pp.132-141
• /
• 2015

There might have been weakness in securing user authentication or verification with real time service approach, while existing unimodal biometric authentication has been used mainly for user identification and recognition. Accordingly, it is essential to research and develop ways that upgrade security performance with multi biometric based real time authentication and verification technology. This paper focused to suggest binding assignment and strategy for developing multi biometric authentication technology through investigation of advanced study and patents. Description includes introduction, technology outline, technology trend, patent analysis, and conclusion.

• Proceedings of the KIEE Conference
• /
• summer
• /
• pp.1322-1324
• /
• 2004

Lately, there is urban transit vehicles in trend that speed is increased and safety are reinforced. In the case of Japan, is developing vehicles that the electric motor of direct drive type for maintenance expense curtailment and noise decrease. It is predicted to happen the demand of EMU met new environment such as wide area railway in domestic. Furthermore, It is need the introduction of vehicles met new standard according to reinforcement of safety standard such as interior finishing material. Therefore, This paper present about the development direction of urban transit vehicles in domestic environment.