• 한국정보디스플레이학회:학술대회논문집
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• 2004.08a
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• pp.44-47
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• 2004

Fabrication of barrier layer on PES substrate and plastic OLED device by atomic layer deposition are carried out. Simultaneous deposition of 30nm of $AlO_x$ film on both sides of PES gives film MOCON value of 0.0615g/$m^2$.day (@38$^{\circ}C$, 100% R.H). Introduction of conformal $AlO_x$ film by ALD resulted in enhanced barrier properties for inorganic double layered film including PECVO $SiN_x$. Preliminary life time to 91% of initial luminance (1300 cd/$m^2$ ) for 100nm of PECVD $SiN_x$/30nm of ALD $AlO_x$ coated plastic OLED device was 260 hours.

• Proceedings of the Korea Information Processing Society Conference
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• 2006.05a
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• pp.1389-1392
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• 2006

UPnP 기반의 $Intel{(R)}$ RUI는 서버의 자원을 이용하여 클라이언트에 UI 서비스하고 사용자의 입력을 받아 처리한다. 본 논문에서는 동적 UI 서비스시에 발생하는 '변화가 빈번한 이미지 전송 문제' 및 '서비스 대상 프로그램에서 출력되는 사운드 전송 문제'에 대한 해결 방안을 제시한다. 또한 Flash Content를 서비스하는 RUI Server/Client 구현을 통해 검증하여 실제 적용 가능성을 보여준다.

• Journal of the Korean Society for Precision Engineering
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• v.22 no.4
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• pp.52-59
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• 2005

When a micro hole is machined by EDM with a cylindrical electrode, the hole diameter is different at the inlet and the outlet of the micro hole. The taper shape of the micro hole is caused by not only wear of the electrode but the eroded particles. The eroded particles cause secondary discharge during machining the micro hole. As a result, the diameter of the inlet becomes larger than that of the outlet. In this paper, a new method is proposed to reduce the difference in diameter between the inlet and the outlet of the hole. Observed was that the feed depth and machining time affect the formation of taper shape On this experimental basis, ultrasonic vibration was applied to reduce machining time, and capacitance was changed during machining to use the difference in discharging energy of different capacitances. Using the proposed method, a straight micro-hole was fabricated.

• Proceedings of the KIEE Conference
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• 1997.07f
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• pp.1936-1938
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• 1997

Depending on the energy storage-element they are categorized into two types. One is called voltage-fed type when capacitors are used as energy storage elements. The other goes by the name of current-fed which s utilizes inductors as energy storage elements. This paper deals with the basic concept of pulse-power generation in the view points of load matching for the voltage-fed type.

• International Journal of Fuzzy Logic and Intelligent Systems
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• v.11 no.4
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• pp.267-274
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• 2011

Recently, actor-critic methods have drawn significant interests in the area of reinforcement learning, and several algorithms have been studied along the line of the actor-critic strategy. In this paper, we consider a new type of actor-critic algorithms employing the kernel methods, which have recently shown to be very effective tools in the various fields of machine learning, and have performed investigations on combining the actor-critic strategy together with kernel methods. More specifically, this paper studies actor-critic algorithms utilizing the kernel-based least-squares estimation and policy gradient, and in its critic's part, the study uses a sliding-window-based kernel least-squares method, which leads to a fast and efficient value-function-estimation in a nonparametric setting. The applicability of the considered algorithms is illustrated via a robot locomotion problem and a tunnel ventilation control problem.

• The Journal of Korean Academic Society of Nursing Education
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• v.20 no.3
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• pp.362-371
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• 2014

Purpose: The aim of this study was to describe the experiences of student nurses during their clinical practice periods in an alcoholic ward. Methods: A descriptive phenomenological study design was employed. Individual interviews were conducted and audio-taped. Colaizzi's method of data analysis was applied to inductively determine themes and formulated meanings. Data saturation was achieved and methodological rigor was established. Results: Four themes were identified and these themes included anxiety of nursing practice in unfamiliar setting, sympathy with patients, learning about the inpatient alcoholics care, and self-reflection. Conclusion: Nursing students had positive and negative experiences in their clinical practice. The results of this study had important implications regarding clinical practice and research for nursing clinical education.

• The Bulletin of The Korean Astronomical Society
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• v.40 no.2
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• pp.55.3-55.3
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• 2015

We study the possibility of new approach for identifying instrumental noise artifacts and sources of gravitational wave (GW) data such as LIGO and CLIO using various correlation analyses.To improve the quality of data for the GW signal search, the instrumental noises should be reduced in an appropriate way. Furthermore, it is important to understand the correlation between auxiliary channels of the GW detector. In this study, we investigate the possible way of identifying glitch triggers by generating time-frequency-correlation (TFC) maps between the related channels and compare the result to the current conventional schemes.

• Journal of Environmental Impact Assessment
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• v.7 no.1
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• pp.117-123
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• 1998

The present study was performed to improve the Environmental Impact Assessment system by comparing and analysing EIA systems for Residential Developments in the light of the business practice. For the improvement of EIA system, future strategies from each of three part ; the organ of approval(Construction&Transportation Dept.) for residential developments, the organ of consultation(Environment Dept.) for EIA and a developer(Korea Nation Housing Corp.), were analysed, and EIA systems and the processes of Residential developments were analysed. Results from the analysis of problems have provided a proposal for improvement of the Environmental Impact Assessment.

• The Journal of Korean Medical History
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• v.13 no.1
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• pp.21-32
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• 2000

Through this research, it was discovered that Wang Sa-wung studied classics such as "Nai Kyung", and brought about new theries and prescription by combining it with his own experience. He asserted 'Ki Hwa Chu Ki' theory which differentiated 'Shin Kam' and 'Bok Sa' within 'On Byung', and this was a new theory which was not in existence before. The main reason for the recognition received by the future generation is, not only because of the substantial theoretical background but, due to the fact that his ideas were based on making practical use easier within rich near a bed experience.

• Journal of the Korean Society for Precision Engineering
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• v.23 no.3 s.180
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• pp.39-46
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• 2006

In this work a dynamic cutting force model in ball end milling of inclined surface is introduced. To represent the complex cutting geometry in ball end milling of inclined surface, workpiece is modeled with Z-map method and cutting edges are divided into finite cutting edge elements. As tool rotates and vibrates, a finite cutting edge element makes two triangular sub-patches. Using the number of nodes in workpiece which are in the interior of sub-patches, instant average uncut chip thickness is derived. Instant dynamic cutting forces are computed with the chip thickness and cutting coefficients. The deformation of cutting tool induced by cutting farces is also computed. With iterative computation of these procedures, a dynamic cutting force model is generated. The model is verified with several experiments.