• Journal of Pharmaceutical Investigation
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• v.16 no.4
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• pp.158-170
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• 1986

This is the article on the uses, methods of elaboration, qualitative, and quantitative evaluations, of organic and inorganic bismuth trivalent compounds. The obvious accent appears to be on the therapeutic uses. However, their interest will relate to all, for the reader looking beyond that first impression will be treated to an amazingly rich compendium of historical applications that can only prompt new questions and open up unsuspected horizons in seemingly unrelated area.

• Journal of Korea Multimedia Society
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• v.20 no.10
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• pp.1671-1677
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• 2017

In this paper, we propose a machine learning method for random noise removal in image deblurring. The proposed method uses a logistic regression to select reliable data to use them, and, at the same time, to exclude data, which seem to be corrupted by random noise, in the deblurring process. The proposed method uses commonly available images as training data. Simulation results show an improved performance of the proposed method, as compared with the median filtering based reliable data selection method.

• Journal of information and communication convergence engineering
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• v.6 no.3
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• pp.289-293
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• 2008

In this paper, we propose the hardware architecture to accelerate 2D Vector graphics process for mobile devices. we propose the Transformation Unit Architecture that considerates the operation dependency. It has 3 cycles excution time and uses 2 multipliers and 2 adders. Proposed paint generation unit uses a LUT method, so it does not execute color interpolation which needs to be calculated every time. The proposed OpenVG 1.0 Accelerator achieved a 2.85 times faster performance in a tiger model.

• Proceedings of the KIPE Conference
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• 2004.07b
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• pp.791-794
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• 2004

This paper made an induction heating inverter. The inverter is the $20\~40[kHz]$ a resonant inverter which uses a high frequency. We use this inverter and use induction heating. A phasor shift ordered a gate signal to adjust an inverter's output. We verified an output waveform according to the situation of a gate signal through the simulation. We made the inverter really and got the result.

• Proceedings of the Korean Fiber Society Conference
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• 1998.04a
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• pp.244-248
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• 1998

The sound absorption materials are generally classified by three types, such as porous, resonator, panel. All of these types are based on theory of energy transform from sound energy to thermal energy. At first, the sound energy transform from the porous type uses to friction and viscose resistance. Secondly, resonator type uses to resonance frequency, absorption coefficient reach the highest.(omitted)

• Journal of the Korean housing association
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• v.14 no.1
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• pp.41-50
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• 2003

The purpose of this study was to make a comparative analysis of the actual conditions of community space layout and residents' uses and needs of communal space and community programs within two different apartment complexes. As a result, the following findings were obtained: 1) The residents of

• Proceedings of the KIEE Conference
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• 2001.05a
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• pp.259-261
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• 2001

An accurate digital distance relaying algorithm which is immune to the combined reactance effect of the fault resistance and the load current is proposed. The algorithm can estimate adaptively the impedance to a fault point independent of the fault resistance. To compensate the apparent impedance, this algorithm uses iteratively the angle of an impedance deviation vector improved step by step. The impedance correction algorithm for ground faults uses a current distribution factor to compensate mutual coupling effect.

• 제어로봇시스템학회:학술대회논문집
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• 1991.10a
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• pp.12-17
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• 1991

In this paper, a variable structure system control method is proposed to the trajectory control of robot arm. A proposed method uses nonlinear switching function and saturation function. Furthermore, learning control method uses to decrease of the following error. The computer simulation results show that the chattering and the following error decrease and is improved the control the performance by a proposed method.

• 제어로봇시스템학회:학술대회논문집
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• 1991.10a
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• pp.268-273
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• 1991

Missile and target closing velocity is used in the proportional navigation(PN) missile guidance loop. But it is difficult to estimate the closing velocity when passive seeker is used and only the Line-of-Sight(LOS) rate is available in the guidance loop. In this study, new closing velocity estimation method is developed. This method uses LOS rate measurement only and uses some characteristics of PN guidance law. The Lyapunov method is used to analyze the stability of the developed estimation method.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2000.11a
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• pp.161-164
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• 2000

An improved robust hybrid control law is proposed This law uses the separated bounding function: so uncertainties of each axis does not affect the others. Also, this law uses the separated $\varepsilon$, so we can take different $\varepsilon$ for each axis This law guarantees the practical stability in sense of Lyapunov. Simulation was performed to validate this law using a four-axis SCARA type robot manipulator.