• Title/Summary/Keyword: Kwang-soo

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Study on Confirmation of Solid-Meal Lag Phase of Gastric Emptying (고형음식물 위배출시 초기 정체기의 존재에 대한 연구)

  • Lee, Ji-Young;Lee, Kyoung-Soo;Kim, Chang-Guhn;Juhng, Seon-Kwan;Won, Jong-Jin;Nah, Yong-Ho
    • The Korean Journal of Nuclear Medicine
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    • v.25 no.2
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    • pp.207-210
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    • 1991
  • The purpose of this study was to examine the existence of a lag phase of gastric emptying of solid meals. We studied solid phase gastric emptying in 26 normal subject using continuous data aquisition for 30 minutes. Each ingested a 300 g meal containing $^{99m}Tc-labeled$ scrambled egg (solid 150g, milk 150 ml). Lag phase was determined by 1) inspection of the gastric emptying curve 2) time to a 2% decrease in stomach activity 3) the time of visual appearance of duodenal activity on computer image We concluded that solid meal lag phase exist.

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Fast Template Matching for the Recognition of Hand Vascular Pattern (정맥패턴인식을 위한 고속 원형정합)

  • Choi, Kwang-Wook;Choi, Hwan-Soo;Pyo, Kwang-Soo
    • Proceedings of the KIEE Conference
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    • 2003.11c
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    • pp.532-535
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    • 2003
  • In this paper, we propose a new algorithm that can enhance the speed of template matching of hand vascular pattern person verification or recognition system. Various template matching algorithms have advantages in the matching accuracy, but most of the algorithms suffer from computational burden. To reduce the computational amount, with accuracy maintained, we propose following template matching scenario as follows. firstly, original hand vascular image is re-sampled in order to reduce spatial resolution. Secondly, reconstructed image is projected to vertical and horizontal direction, being converted to two one dimensional (1D) data. Thirdly, converted data is used to estimate spatial discrepancy between stored template image and target image. Finally, matching begins from where the estimated order is highest, and finishes when matching decision function is computed to be over certain threshold. We've applied the proposed algorithm to hand vascular pattern identification application for biometrics, and observed dramatic matching speed enhancement. This paper presents detailed explanation of the proposed algorithm and evaluation results.

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The Clinical Study on 40 Cases of Patient with Thoracolumbar Fracture (흉·요추 골절 환자 40례에 대한 임상적 고찰)

  • Oh, Hei-hong;Kim, Il-du;Byun, Jae-yung;Ahn, Soo-gi
    • Journal of Acupuncture Research
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    • v.18 no.2
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    • pp.227-236
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    • 2001
  • Objectives : This study was performed to evaluate the clinical results of the thoracolumbar fracture patients treated with oriental medical methods. Methods : We reviewed 40 patients of thoracolumbar fracture, who were hospitalized at WonKwang University KwangJu Oriental Medical Hospital and treated by oriental medical methods. We classified thoracolumbar fracture according to three column theory and then analyzed the cause of injury, sex-age distribution, treatment, and etc.. Results : 1. The distribution showed female predominance(72.5%) in sex and 70age-bracket predominance in age. 2. In the distribution of causes, the largest group was "lifting heavy objects"(40%) and the next was "slip down"(37.5%). 3. In the duration of symptoms, the largest group was the group of "acutest" (40%). 4. The distribution of injured level was L1 body the most(20%). 5. In classification of fracture, "compression fracture" was the most(57.5%) and the next was "burst fracture", "unstable fracture" in order. 7. Therapeutic effects above "fair" were 37 cases(92.5%). 8. The higher grade of clinical symptoms is, the lower therapeutic effect is. 9. In the distribution of treatment results according to classification of fracture, both the compression fracture and the burst fracture were almost same high and the unstable fracture is relatively lower than them. Conclusions : The result to treating thoracolumbar fracture by oriental medical methods is satisfactory.

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Optical Power Transfer of Grating - Assisted Directional Coupler with Three - Guiding Channels : TM modes Case

  • Ho, Kwang-Chun;Ho, Kwang-Soo
    • Journal of the Optical Society of Korea
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    • v.8 no.4
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    • pp.149-155
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    • 2004
  • Newly developed modal transmission-line theory(MTLT) is used to analyze rigorously the optical power distribution in grating-assisted directional couplers(GADCs) with three guiding channels. By defining a novel coupling efficiency ${\eta}$ amenable to the rigorous analytical solutions of modal transmission-line theory, we explicitly evaluate the power coupling and distribution of TM modes. The results reveal that the incident power is sensitively partitioned through three output channels in terms of such grating parameters as the grating period, the duty cycle, and the operating wavelength.