• Journal of Korean Library and Information Science Society
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• v.35 no.4
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• pp.65-84
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• 2004

The purpose of this study is analyze physical and textual characteristics on an epigraph, the Memorial Stone of Yun Gwm(尹? 誌石). This was edited by Kim Yeon-Su. On the view of physical point, the Memorial Stone is made of black stone and its size is 25.0cm high, 31.0cm wide, and 2.5cm thick. On the view of textual point the text of Memorial Stone is about the career of Yun Gwan, and the printed style of writing is by depressed engraving on both side black stone plane.

• Journal of the Korean Institute of Telematics and Electronics B
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• v.31B no.12
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• pp.72-80
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• 1994

In this paper, we present a digital image data compression method using vector quantization preserving edges. A new vector quantization algorithm is proposed using a new sampling method and edge region extraction. The codebook generation time is faster than existing algorithms and the quality of decompressed images is much improved. Extrimental results suggest that the resultant compression ratio and PSNR are better than those of BPVQ and HMVQ methods.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.19 no.7
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• pp.1203-1212
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• 1994

This paper proposes a variable block size vector quantization based on a biorthogonal wavelet transform for image compression. An image is first decomposed with the biorthogonal wavelet transform into multiresolution image and the wavelet coefficients of the middle frequency bands are segmented using the quadtree sturcture to extract the perceptually important regions in the middle frequency bands. A sedges of middle frequency bands exist the corresponding position of high frequency bands, the complicated quadtree structure of middle frequency bands is equally applied to the high frequency bands. Therefore the overhaed information of the quadtree codes needed to segment the high frequency bands can be reduced. The segmented subblocks are encoded with the codebook designed at the each scales and directions. The simulation results showed that the proposed methods could reproduce higher quality image with bit rate reduced about 20(%) than of the preceding VQ method and sufficiently reduce the bolck effect and the edge degradation.

• The Journal of the Korea Contents Association
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• v.8 no.8
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• pp.235-243
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• 2008

This research show how Shin Han-Seong make up Taekkyeon to register to intangible cultural assets, and found next conclusion and meaning. First, skill organization of Song Duk-Ki Taekkeon that is only one modem Taekkeon's initiator have been transmitted for a piece of skills of playing figure which don't have regular system. But Taekkyeon which have regular system have been developed by Shin Han-Seong, finally Taekkyeon is approved to intangible cultural assets. Second, Shin Han-Seong modernized Taekkyeon by borrowing training system of Judo, Fencing, Hapgido, Taekwondo, Karate. But people criticize that Song Duk-Ki Taekkeon is not initiate with original thing. Third, Shin Han-Seong made the grade classification and practical technique screening, Bon-Dae Buigi Twelve part like Pomse of Taekwondo (there is no for traditional Taekkyeon). And he contributed to popularization and modernized learning system by pursuiting sportization. Through this research geared up Taekkyeon's original shape and generational outline about skill transition or composition. And it gave important data for understand about Taekkyeon controversy which scattered.

• Journal of IKEEE
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• v.16 no.4
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• pp.322-327
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• 2012

In this paper, a digital phase-locked loop(Digital-PLL) circuit with a new phase-to-digital converter(P2D) is described. The proposed digital PLL is composed a P2D, a digital loop filter(DLF), and a digitally controlled oscillator(DCO). The P2D generates a digital code for a phase error. The proposed P2D used a binary phase frequency detector(BPFD) and a counter in place of a time-to-digital converter(TDC) for simple structure, compact area and low power consumption. The proposed circuit was designed with CMOS 0.18um process. The simulation shows the circuit operates with the 1.0 to 2.2GHz with the power consumption of 16.2mW at 1.65GHz and the circuit occupies the chip area of $0.096mm^2$.

• Journal of Institute of Control, Robotics and Systems
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• v.7 no.9
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• pp.723-732
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• 2001

In this paper, the neurofuzzy controller of optically guided AGV is proposed to improve the path-tracking performance A differential steered AGV has front-side and rear-side optical sensors, which can identify the guiding path. Due to the discontinuity of measured data in optical sensors, optically guided AGVs break away easily from the guiding path and path-tracking performance is being degraded. Whenever the On/Off signals in the optical sensors are generated discontinuously, the motion errors can be measured and updated. After sensing, the variation of motion errors can be estimated continuously by the dead reckoning method according to left/right wheel angular velocity. We define the estimated contour error as the sum of the measured contour in the sensing error and the estimated variation of contour error after sensing. The neurofuzzy system consists of incorporating fuzzy controller and neural network. The center and width of fuzzy membership functions are adaptively adjusted by back-propagation learning to minimize th estimated contour error. The proposed control system can be compared with the traditional fuzzy control and decision system in their network structure and learning ability. The proposed control strategy is experience through simulated model to check the performance.

• (The)Study of the Eastern Classic
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• no.72
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• pp.127-156
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• 2018

Kim Yoo-shin was highly evaluated in Silla, not only when he was alive, but also after his death. When he was alive, he was regarded as one of the best servants who accomplished the task of 'Iltong-Samhan' by supporting KiIng Tae-jong and King Mun-mu. Kim Yoo-shin was recognized as 'good servant' or 'sacred servant' who helped King Tae-jong even after he died. In addition, he was revered as 'two adults' with King Mun-moo. He was awarded the title of 'The Great King Heung-mu'. In the Goryeo period, it was supported as a national sacrifice in the shrine of Mt. Taeryeng of Jinchon. Kim Yoo-shin was regarded as a person who achieved great success with the absolute trust of King Tae-jong and King Mun-mu. In addition, Yoon-gwan recognized Kim Yoo-shin as a general who caused many miracles. Lee Seung-hyeo said that Kim Yoo-shin had a mysterious Military-Strategy Book and excelled in martial arts. Even during the Joseon Dynasty, the evaluation of Kim Yu-shin's success had been continued due to the absolute trusting relationship between King Taejong or King Mun-moo and his retainer Kim Yoo-shin. Kim Yoo-shin was either the representative of Silla's martial or the most outstanding figure in the entire history of the Silla Dynasty. Furthermore, he was recognized as a person with competence and aptitude comparable to Chinese characters. Kim Yoo-shin was superior in military strategy. Kim Yoo-shin was evaluated as a representative of martial in Korea's history. From a neo-Confucian point of view, they evaluated him as a loyal person through Kim's achievements.