An Efficient Computation of the MDCR/IMDCT For MPEG Audio Layer-Ⅲ

Kim, Hi Seok 청주대학교 산업과학연구소 2005 産業科學硏究 Vol.23 No.1

본 논문은 MDCT와 IMDCT에 대해서 DCT-Ⅱ에 기반을 둔 효율적인 알고리즘을 제안하였다. 본 논문에서, 우리는 MDCT와 IMDCT 결과를 동시에 연산하기 위한 공통 커널을 추출한다. 또한 제안한 공통 커널은 매우 균형적인 구조를 갖기 때문에, 파이프라인화 된 병렬 구조로서 구현이 가능하다. 결과적으로 제안한 알고리즘의 복잡도는 기존의 알고리즘들의 복잡도보다 낮기 때문에 성능이 우수함을 알 수 있었다. This paper presents an efficient algorithm of the Modified Discrete Cosine Transform (MDCT) and its inverse transform (IMDCT) for MPEG Layer -Ⅲ. The poposed algorithm is based on the DCT of type Ⅱ (DCT-Ⅱ). In this paper, by extracting a common transform kernel to compute both the MDCT and IMDCT. we obtain a unified structure for computation of both of them. Also, since the proposed unified structure is very symmetrical, it is suitable to utilized to the parallel or pipelined VLSI implementation of the MDCT/IMDCT. Furthermore, it requires less calculation complexity than the existing algorithms.

RGB에서 YCbCr 변환을 위한 컬러 시스템 의 FPGA 구현

김희석 청주대학교 2015 産業科學硏究 Vol.33 No.1

This paper explores the performance and architectural tradeoffs involved in the design of FPGA based realtime image processing systems. There are several coordinate systems which came into existence for variety of reasons. This paper discusses the use of restructurable hardware specifically field programming gate arrays, for RGB Color Space to YCbCr color Space. YCbCr color space is necessary in many video designs. The reference design files show RTL (Verilog) code to describe the conversion equations and synthesize to a target FPGA. The code is parameterizable for the input/outputprecision and the internal coefficient precision. Simulation results are also provided as an implementation example, placed and routed design in a Zynq device (xc7z020-1clg400) is presented.

소아 뇌사자 장기 공여 마취: 증례 보고

손석곤, 정유섭, 박상희 충북대학교 의과대학 충북대학교 의학연구소 2016 忠北醫大學術誌 Vol.26 No.1

본문참고

저전력 MP3 디코더 설계

김희석 청주대학교 2008 産業科學硏究 Vol.26 No.1

In this paper, an efficient IMDCT block by adopting clock-gating logic for low_ power MP3 decoder is proposed.. The IMDCT has the most intensive calculation complexity in the several blocks of MP3 decoder. Therefore, the IMDCT have to be implemented into a hard-wired block block and low power block. Experimental result show that our proposed clock-gating approach reduces more dynamic power dissipation around 35% with respect to the logic module without any clock-gating logic. This paper also shows that our MP3 system has verified a good performance and operation characteristics.

원발성 유방암에서 Sodium Iodide Symporter의 발현과 ^(99m)Tc-MIBI 유방스캔의 관계

석주원,김성장,곽희숙,이창훈,김인주,김용기,배영태,김동수 대한핵의학회 2002 핵의학 분자영상 Vol.36 No.6

목적: hNIS는 갑상선 조직 외에 다른 조직들에서도 발현된다고 알려져 있다. 유방암 세포는 그런 조직들 중에 하나이며, 그에 의한 유방암의 방사성옥소치료의 가능성이 제시되고 있다. 본 연구에서는 유방암 조직에서 hNIS의 발현정도를 알아보고, ^99mTc-MIBI 유방스캔과 hNIS의 발현 정도와의 관계를 조사하여 보았다. 대상 및 방법: 본 연구에서는 유방암으로 수술을 시행했던 56명의 환자를 대상으로 하였다. hNIS의 발현은 면역조직화학염색에 의해서 평가되었으며, 그 결과를 ^99mTc-MIBI 유방스캔의 판정 결과와 비교하였다. 결과: 전체 56명의 환자에서 hNIS의 발현율은 41.1%였다. 병리학적 진단에 의해 침윤성관상피암종이었던 49명에서의 발현율은 42.9%, 관상피내암종이었던 7명에서의 발현율은 28.6%였다. ^99mTc-MIBI 유방스캔에서 국소섭취 소견이 관찰되었던 41명에서의 hNIS의 발현율은 31.7%였다. 비정상적인 섭취 소견이 관찰되지 않았던 15명의 환자에서의 hNIS의 발현율이 의미있게 높게 관찰되었다(66.7%, p>0.05). 결론: 유방암 환자에서의 hNIS의 발현율은 그다지 높지 않았다. ^99mTc-MIBI 유방스캔에서 섭취증가 소견이 없을 때 hNIS의 발현율이 더 높았다. Purpose: Human Na^+/I- symporter (hNIS) is known to be expressed in many tissues other than thyroid gland. The breast cancer cells are one of them and the possibility of radioiodine therapy in treatment of the breast cancer may be suggested. We investigated the expression rate of hNIS and the relationship between the expression of hNIS and the finding of 99mTc-MIBI scintimammography in the breast cancer. Materials and Methods: Surgically proved 56 patients with breast cancer were the subjects of this study. The expression of hNIS were evaluated by immunohistochemistry and the results were compared to the findings of 99mTc-MIBI scintimammography. Results: Overall expression rate of hNIS was 41.1% in 56 patients. According to the pathologic diagnosis, it was 42.9% in 49 patients with invasive ductal carcinoma and 28.6% in the 7 patients with ductal carcinoma in situ. The expression rate of hNIS in the 41 cases with a focal increased uptake at he breast lesion on 99mTc-MIBI scintimammogram was 31.7%. That in the 15 cases without any abnormal uptake on the scan was significantly higher(66.7%, p<0.05). Conclusion: The expression rate of hNIS in the patients with breast cancer was not so high. The rate was higher in the patients with no increased uptake at the breast lesion on 99mTc-MIBI scintimammography. (Korean J Nucl Med 2002;36;325-32)

Optimal Crout Algorithm을 이용한 선형회로 해석에 관한 연구

金熙碩 淸州大學校 1982 論文集 Vol.15 No.2

The Concept of Linear Algebra Equation using Optimal-Algorithm is introduced. It is allows for Computer--Aided Circuit Design. An Optimal Network Program for Solving Linear Equations showing an Improvement in CPU time. the Program consist of four Subroutine Parts The Performance of this Fortran Program for the- Network Analysis Program of transistor Amplilfier is also described as Example

前腕部 經穴 取穴에서 骨度分寸法과 一夫法의 比較 硏究

박히준,채윤병,차웅석,박종배,이혜정,이향숙,인창식,고형균,김수영,최일환,김강식,문정배,배기태,유경환,육근영,정병주,손인철,임사비나 WHO COLLABORATING CENTRE FOR TRADITIONAL MEDICINE 2004 東西醫學硏究所 論文集 Vol.2004 No.-

Background : The cun measurement System, an essential and convenient method in locating acupoints, has been widely used in the practice of acupuncture. However, traditional cun measurement has been criticized for its lack of reliability. Objectives : The purposes of this study are to determine if one cun measured by the directional methods have a consistency with that of proportional methods and to investigate which factors are related with these differences, especially in forearm. Methods : The distance between the elbow crease and the wrist crease of forearm was compared to a reference value of one cun obtained by the directional method. In this method, one cun is one third of the distance between index finger and Small finger of a subject, measured at proximal interphalangeal joint. In addition, to investigate the factors influencing the differences between these two methods, we measured the height and body weight and calculated body mass index (BMI). Finally we analyzed the factors correlated with these lengths by linear regression test. Results : The results showed that one cun obtained by the directional methods were significantly different from one cun by the proportional methods in forearm. It was demonstrated that the length acquired with the directional method was more correlated with body weight and body mass index, while the length obtained by the proportional method was more correlated with the height.

사체간이식 환자와 생체간이식 환자들의 삶의 질 비교 연구

김금희,윤석준,안형식,이준영,박형근,서경석 한국의료QA학회 2004 한국의료질향상학회지 Vol.11 No.1

Objective : The aim of this study were to measure quality of life(QOL) in liver transplant recipicnts, to ocmpare QOL between living donor liver transplant recipicnts and cadavcric live transplant recipients and to investgatre whether SF-36 may be used as a disease-specific instrument in liver transplant recipients. Methods : We conducted a single-center cross-sectional study of 133 LT recipients ages 13 to 65 years, all of whom had had Liver Transplantion(LT) at least 1 months previously. QOL was assessed using a self-completion questionnaire consisting of the Bang Whal Ran(1991) instruments and the 36-Item Short-Firm Health Survey(SF-36) health status profile measure. We investigated whether the SF-36 instrument may be used as a disease-specific instrument in LT recipients. Individual scale scores range from 0 to 100 , with higher score reflecting better health. Data on demograpics, clinical status at pre transplantation 1 day, post transplantation clinical statns, and graft gunction were collected to identify predictors of post transplantation QOL. Results : Standard measures for test-rtest reliability, internal consistency, and discriminant and concurrent validity were examined. The reliability of the SF-36, as measured by test-retest correlation(Pearson coeffocoents: 0.729, p=0.002) and by internal consistency (Cronbach's alpha: 0.9431) exceeded conbentional acceptability criteria. The correlation between domain scores of SF-36 and the Bang Whal Ran(1991) was clear and logical in that the clinical characteristics of SF-36 strongly correlated with the clinical component summary score of the Bang Whal Ran(1991)(r = 0.8155, P<01). SF-36 scale scores were compared between Cadaveric Liver Transplant recipients and Living Donor Liver Transplant recipients. Donor types of post LT did not influence HRQOL(P >0.05). 87% of the liver transplant recipients were safisfied to get LT. Satisfaction of post LT showed significantly greater HRQOL(p<0.001). Conclusion : SF-36 is found reliable and valid. This study indicates thet Donor Type did not influence HRQOL after LT. The information gained from this study will help us to better define expectations and the colinical course after liver transplantation to patients and their families.

실시간 회전 영상 보정을 위한 고속 회전 각도 검출 알고리즘의 FPGA 설계

김희석 청주대학교 2018 産業科學硏究 Vol.35 No.2

In this paper, an efficient method of hardware design based on Field Programmable Gate Array (FPGA) to detect rotated angle of high definition image for real time process is proposed. Through the result both the proposed method and CORDIC, the proposed design is confirmed to have high operating speed of about 0.6ns with CORDIC. It is verified to have good performance results comparing than CORDIC with cost utilization of registers and Look Up Tables (LUTs) of 0.5% and 0.07%,respectively. The proposed method is implemented by XC702 FPGA board by using xilinx 14.7 tool .

實腸散 Extract가 腸管運動 및 血淸電解質에 미치는 影響에 對한 實驗的 硏究

元泰喜,文九,文錫哉 圓光大學校 韓醫學硏究所 1991 원광한의학 Vol.1 No.1

Effects of Siljangsan(實腸散) extract on the intestinal tract were studied in isolated orgna segments in vitro. Treatment of Siljansan extract caused an decrease of the contractile response of the isolated guinea pig ileum. Generally the magnitude of decrease was related to the dose of Siljangsan extract. The relaxative response of isolated guinea pig ileum induced by Siljangsan extract was inhibited if propranolol was pretreated to the ileum segment. And contractions of isolated guinea pig ileums, induced by acetylcholine, histamine and 5-hydroxytryptamine, were inhibited on Siljangsan extract. Effects of Siljangsan extract on the serum slectrolyte were also investigated in rat in vivo. Serum-Na^+ concentration, in contrast to control group, has appeared significant value in 100mg/kg(4hr), 500mg/kg(2, 4hr) administered groups. Serum-K^+ concentration, in contrast to control group, has appeared significant value in 100mg/kg(1hr) administered group. Serum-HCO^-_3 concentration, in contrast to control group, has appeared significant value in 500mg/kg(4hr) administered group. But the effects of Siljangsan were not directly relate to regulation of water and electrolyte(Na^+, K^+, HCO^-_3) The results presented in this study suggests that the therapeutic effects of Siljangsan on the intestinal tract function might due to its action on the autonomic nervous system of intestinal tract and directly on the intestinal smooth muscle.