• 한국디지털건축인테리어학회논문집
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• 제8권2호
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• pp.57-64
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• 2008

The walls of art museums become the background of exhibits, and they form a unit space depending on the of each exhibit. In addition, the walls are configured and presented depending on the rhythm of space, or the structure of an axis. In this study, according to the axis composed for each unit space, the presentation methods of walls were classified as follows: The central type, the skewed type, the crossed type, the one-side corridor type, and the two-way corridor type. By analyzing visual configurations formed by the arrangement of each unit space, the value and the hierarchy of walls are discussed To analyze the classified types with the physical change of unit space, the factors of visual integration, connectivity, depth, and visual axis are compared, and various configurations of walls and space change are applied.

• Journal of electromagnetic engineering and science
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• 제3권1호
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• pp.45-49
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• 2003

Wireless life signal detecting system is implemented with using the mechanism of Doppler Effect. This system can measure the respiration and heart rates with the periodic movement of skin and muscle near the heart. The system is consisted of antenna, RF transmitter, receiver, and display part. We did use two operating frequencies at 1.9 ㎓ and 10 ㎓. Firstly, the link budget about detecting system is analyzed and the signal detected from the system is compared with electrocardiogram(ECG) of monitor which is using for patient monitoring in hospital. Secondly, the detection of vital sign is also performed according to the different distances, and including behind the wall.

• 한국반도체및디스플레이장비학회:학술대회논문집
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• 한국반도체및디스플레이장비학회 2007년도 춘계학술대회
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• pp.183-187
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• 2007

The magnetron reactive ion etching (RIE) characteristics of polycrystalline (poly) 3C-SiC grown on $SiO_2$/Si substrate by APCVD were investigated. Poly 3C-SiC was etched by $CHF_3$ gas, which can form a polymer as a function of side wall protective layers, with additive $O_2$ and Ar gases. Especially, it was performed in magnetron RIE, which can etch SiC at lower ion energy than a commercial RIE system. Stable etching was achieved at 70 W and the poly 3C-SiC was undamaged. The etch rate could be controlled from $20\;{\AA}/min$ to $400\;{\AA}/min$ by the manipulation of gas flow rates, chamber pressure, RF power, and electrode gap. The best vertical structure was improved by the addition of 40 % $O_2$ and 16 % Ar with the $CHF_3$ reactive gas. Therefore, poly 3C-SiC etched by magnetron RIE can expect to be applied to M/NEMS applications.

• 전력전자학회:학술대회논문집
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• 전력전자학회 1999년도 전력전자학술대회 논문집
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• pp.84-87
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• 1999

This paper proposes an interfaces control system to drive a ultrasonic motors(USMs). To touch surfaces and objects created within a virtua environment, the 3 DOF force-reflecting interfaces provides force feedback to users, so to feel touching real things. To effectively display the mechanical impedance of the human hand we need a device with specific characteristics, such as low inertia almost zero friction and very high stiffness. As an actuator for direct drive method, the USMs have many good advantages satisfied these conditions over conventional servo motors. To estimate capability of this interface, we did an experiment. The device works very well, as user are able to detect the edge of the wall and the stiffness of the button.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2003년도 International Meeting on Information Display
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• pp.333-336
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• 2003

The current paper presents the design and implementation of a low-profile dc-to-dc converter developed as a power supply for the sustain driving circuit inside large-area wall-mount ac PDP application systems. Details on the design and implementation of a 500 W prototype dc-to-dc converter, miniaturized within a 230 $mm{\times}130$ mm area with a thickness of 25 mm while still achieving a 95 % conversion efficiency, are presented to demonstrate the feasibility and application potentials of the proposed low-profile dc-to-dc converter.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2003년도 International Meeting on Information Display
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• pp.1047-1052
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• 2003

Controlling carrier transport in light emitting polymers is extremely important for their efficient use in organic opto-electronic devices [1]. Here we show that the interactions between single wall carbon nanotubes (SWNTs) and conjugated polymers can be used to modify the overall mobility of charge carriers within nanotube-polymer nanocomposites. By using a unique, double emitting-organic light emitting diodes (DE-OLEDs) structure. we have characterized the hole transport within electroluminescent nanocomposites (nanotubes in poly (m-phenylene vinylene-co-2,5-dioctoxy-p-phenylene) or PmPV). We have shown using this idea that single devices with color tunability can be fabricated. It is seen that SWNTs in PmPV are responsible for hole trapping, leading to shifts in the emission wavelengths. Our results could lead to improved organic optical amplifiers, semiconducting devices, and displays.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2004년도 춘계학술대회 논문집 디스플레이 광소자분야
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• pp.146-149
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• 2004

We have studied a liquid crystal (LC) mode (named locked super homeotropic (LSH)) in which the LCs aligned homeotropically are locked by surrounding walls such as cubic, hexagonal and cylinder. In the device, the vertically aligned LCs tilt down symmetrically around the center of the cell when a voltage is applied and thus it exhibits wide viewing angle. The structure of this LSH mode is suitable for large-sized display panels. since the LCs are locked in micro domains the LCs do not flow to the bottom of the panel by gravity. This mode is applicable to achieve high performance TFT-LCD TV because of high performance characteristics such as high contrast, high brightness, wide-viewing angle.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 추계학술대회 논문집 전기물성,응용부문
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• pp.204-206
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• 2005

Although intensive experiments have been performed to investigate the origin of boundary image sticking, one of major factors to determine display quality in AC PDP, it has not being reported clearly why it is occurred. The relationships between boundary image sticking and its possible origins such as phosphor degradation, temporal change of MgO layer, wall charge have been discussed. In this paper, we have analyzed characteristics of the boundary image sticking more clearly by the influence of local panel temperature.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1997년도 추계학술대회 논문집 학회본부
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• pp.379-381
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• 1997

The dielectric layers in AC plasma display panel(AC PDP) are essential to the discharge cell structure, because they protect metal electrodes from sputtering by positive ion and from a sheath of wall charges which are essential to memory function of AC PDP. Furthermore, this layer should be transparent because the visible light must pass through the layer. In this paper, the dielectric breakdown strength and transparency of the dielectric layer on the discharge electrodes are studied. The variables in this test are the dielectric layer thickness, dielectric firing condition, gas pressure, species of gas and so on.

• 한국실내디자인학회논문집
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• 제22호
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• pp.3-15
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• 2000

The purpose of this study is to develop furniture design for the apartment based on the market research of furniture and interior design, and the survey on the design preference of hte apartment residents. The apartment furniture in living rooms, bed rooms and kitchens are designed according to the design concepts of preference image of apartment sizes: that of mid-size apartment(34pyung type) is Natural Modern image, large-size(59pyung type) is Korean Modern image, and extra large-size(81pyung type) is Classic Modern image. The living furniture is designed smaller in order to use the space flexibly, and the built-in furniture of bed rooms is designed simply like the wall of a room to be felt larger, basically. The furniture in kitchen is composed of the storage zone by high cabinets and the display zone by open shelves.