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류향진 ( Hyang Jin Ryu ),유승흠 ( Seung Hum Yu ),박은철 ( Eun Cheol Park ),김정인 ( Jung In Kim ),손태용 ( Tae Yong Sohn ) 한국병원경영학회 2006 병원경영학회지 Vol.11 No.3
This study aims to deal with hospital staff`s recognition on the opening of the medical services market, their attitude to the opening-agreement and disagreement, and their intention to use a foreign hospital or to consult its doctors again. It was conducted for 450 employees of one university hospital located in Gyeonggi Province, Korea with systemized questionnaires. The main results of this study are as follows: First, Medical technicians showed the highest level recognition on the opening of the medical services market. Second, the percentage of agreement to the opening was the highest for medical technicians and lowest for doctors while that of agreement was the highest for doctors and lowest for nurses. For residents, among doctors, the percentage of disagreement was the lower than that of agreement. Third, the intention to use a foreign hospital and to consult its doctor again was the lowest for medical engineers and the highest for doctors. Fourth, the most urgent task for local hospitals to accomplish in response to the opening was the improvement of the diagnosis and treatment technologies for nurses, and the improvement of the service provided by the hospital staff for the others. For doctors, in particular, the improvement of the diagnosis and treatment technologies was just the fourth urgent task. In conclusion, the result varies to the type of occupation. Apparent difference was found for doctors, in particular, that seem to be directly affected by the opening of medical services market. Local hospitals and doctors, therefore, should make efforts together to improve the diagnosis and treatment technologies. All the hospital employees of every type of occupation, meanwhile, need to prepare for the opening with medical service of improved quality.
김형준(Kim Hyung-Joon),김향진(Kim Hyang-Jin),임재윤(Lim Jea-Yun) 한국지역정보화학회 2000 한국지역정보화학회지 Vol.3 No.2
영상 압축은 방대한 데이터를 압축하여 적은 대역폭으로 영상을 전송하기 위한 기술이다. 영상 압축에는 손실 압축과 비손실 압축이 있으며 비손실 압축은 영상의 화질은 그대로 유지할 수 있으나 압축 율이 떨어지고 손실 압축은 압축 율이 높지만 화질이 떨어질 수 있다. 이러한 문제 때문에 압축 율을 높이면서 영상의 질을 유지하려는 여러 가지 변환 압축 기술이 연구되고 있다. 본 논문에서는 영상 압축 시 발생하는 에러를 최소화하기 위하여 영상 내에 존재하는 화소들간의 상관성이 높은 블록에 대하여는 8×8 픽셀 블록으로 나누고 상관성이 낮은 블록에 대하여는 4×4 픽셀 블록으로 나누어 처리하였다. 상관성의 높고 낮음은 분산에 의해 결정되며 분할된 블록들은 블록의 크기에 따라 서로 다른 DCT 알고리즘을 적용하였다. 고정 블록 부호화와 비교하여 볼 때 화소가 급격하게 변하는 지역에서는 화질이 향상됨을 보였다. 본 연구에서 제시하는 이론은 동영상에서도 동일하게 적용되므로 화상회의 등에 사용되면 더욱 좋은 효과를 거들 수 있다. This thesis proposes a variable block division on a discrete cosine transform for image compression. An image is usually divided 8 x 8 pixel blocks but in this paper it is variably divided 4 x 4 pixel blocks and 8 x 8 pixel blocks depend on variance. According to the block size DCT and VQ is differently applied. Compare with fixed block and variable block coding, there is image quality improvement at quickly changing pixel block. The simulation results showed that the proposed method could achieved higher quality image improvement by about 2.12㏈, 2.74㏈, 1.45㏈ each CARPHONE, CLAIRE, CONTAINER than conventional method. Also proposed method is reduced block effect and edge degradation.
김향진,임재윤 濟州大學校 産業技術硏究所 1999 산업기술연구소논문집 Vol.10 No.1
This paper proposes the LSF or LSP that is the method .of using to transfer the speech parameters after processed the speech to LPC. which is digital coding transferring efficiently, for the best quality and the lowest bit rate of parameters. The new revised transform algorithms between LSF and LPC coefficients are proposed. The proposed algorithms eliminates all multiplications, computes fewer operations, and reduces memory buffer sizes.
임재윤,김향진 濟州大學校工科大學産業技術硏究所 1999 尖端技術硏究所論文集 Vol.10 No.1
This paper proposes the LSF or LSP that is the method of using to transfer the speech parameters after processed the speech to LPC, which is digital coding transferring efficiently, for the best quality and the lowest bit rate of parameters. The new revised transform algorithms between LSF and LPC coefficients are proposed. The proposed algorithms eliminates all multiplications, computes fewer operations, and reduces memory buffer sizes.