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시간 스케일러빌리티를 이용한 MPEG-4 FGS 비디오 부호화 기법
김종욱,이배호 전남대학교 전자통신기술연구소 2002 전자통신기술논문지 Vol.5 No.1
The paper shows MPEG-4 FGS(Fine Granularity Scalability) using the scalable video encoding technique that is adapted by MPEG-4 standard and a scheme to improve its efficiency. MPEG-4 FGS is the encoding technique that has the good flexibility for various property of devices and bandwidth variation over the internet. To improve MPEG-4 FGS coding efficiency, we applied an encoding technique with temporal scalability. In other words, the base layer is encoded with the same technique as the typical MPEG-4 FGS and the enhancement layer is encoded by adding temporal scalability property In test results, we could know that had better coding efficiency in the case of adding temporal scalability for the enhancement layer.
김종욱 구보학회 2014 구보학보 Vol.0 No.10
Oh Yeongsu is well known for novelist who dealt with indigenous themes. However, it was the beginning he had an interesting in literature that he wrote a children's poem as a member of Eonyang youth group during the Japanese Colonial Period. But he couldn't have focused on his work in earnest because he tried to go to Japan to study several times. He had to stop studying due to financial difficulties in his school. He resumed his work organizing a Chosun Association of Youth Writers of Gyeong-nam branch in Busan after independence. In that time, Gyeong-nam branch was organized to against Chosun Writers Association which has communism. Many people were linked to anarchism including Yu Chihwan. Anarchists joined up with nationalists in order to fight against communists. In Oh yeongsu's novel, this ideological trait is shaped up as criticism against both nationalism and communism or aim for community which is not ruled by government. 'Nostalgia' in his novel means introspection about the irrationality of modern society rather than returning to childhood. 오영수는 우리에게 서정적이고 향토적인 작품을 쓴 소설가로 널리 알려져 있다. 그렇지만, 오영수는 일제강점기에 언양청년회 회원으로 활동하면서 동시를 창작한 것이 계기가 되어 처음으로 문학에 관심을 갖기 시작했다. 그렇지만 가정 형편 때문에 학업을 끝맺지 못한 아쉬움을 달래기 위해 몇 차례 일본 유학을 시도하면서 본격적인 문학 활동을 펼치지 못했다. 오영수의 문학 활동은 해방 이후 부산에서 결성된 청년문학가협회 경남지부 결성과 함께 다시 시작된다. 당시 경남지부는 사회주의 이념을 내세운 조선문학가동맹에 맞서기 위해 결성된 단체였는데, 그 구성원을 살펴보면 유치환을 비롯하여 다양한 인물들이 아나키즘과 연관되어 있었다. 당시 아나키스트들은 공산주의자들과 맞서기 위해 민족주의자들과 손을 잡았던 것이다. 이러한 이념적 특성은 오영수의 소설에서 민족주의와 공산주의를 모두 비판하는 태도라든가, 국가의 지배가 미치지 않는 소규모 공동체에 대한 지향 등으로 구체화된다. 따라서 오영수의 소설에 나타난 ‘향수’는 과거나 유년으로의 복귀라는 복고적인 의미보다는 현대사회의 부조리에 대한 반성을 도모하는 성찰적인 의미를 담고 있다고 여겨진다.
국내시유 중 Ascorbic Acid의 함량변화에 관한 연구
김종욱,윤여창 한국낙농학회 1986 韓國酪農學會誌 Vol.8 No.1
本 實驗은 市乳 貯藏中 UHT乳와 HTST乳, 包藏容器, 螢光 照射에 따른 asorbic acid의 含量變化를 調査한 實驗으로 結果를 要約하면 다음과 같다. 1. UHT乳의 ascorbic acid 含量은 HTST乳에 비해 21% 낮았다. 2. Ascorbic acid와 酸素含量은 10日 동안 貯藏中 조금씩 減少하였다. 3. 7日 동안 貯藏中에 jiro pack에 있어서 ascorbic acid와 酸素 減少率은 polyethylene pack과 carton pack에 있어서 보다 높았다. 그러나 tetra pack에 있어서 ascorbic acid와 酸素의 含量은 7日째부터 13日째의 貯藏期間中에 각각 15%씩 減少되었다. 4. 400 Lux 螢光에 노출된 투명한 유리병에 담긴 市乳의 ascorbic acid와 酸素含量은 24時間 貯藏中에 각각 88%와 24.7%로 급속히 減少되었다. This experiment was carried out to investigate the changes in the content of ascorbic acid in domestic market milks that was treated with UHT and HTST method, fluorescent light, and that filled different packaging containers during storage. 1. The content of ascorbic acid in UHT milk was 21% lower than that of ascorbic acid in HTST milk. 2. The content of ascorbic acid and oxygen decreased little by little during the 10 days of storage. 3. Decrease rate of ascorbic acid and oxygen in Jiro pack was higher than that of ascorbic acid and oxygen in Polyethylene pack and Carton pack during the 7 days of storage. However, the content of ascorbic acid and oxygen in Tetra pak decreased about 15% respectively from the 7th day to the 13th day. 4. The content of ascorbic acid and oxygen in clear glass bottles exposed to 400 Lux. fluorescent light decreased rapidly about 88% and 24.7% respectively during 24 hours.
이온전도성 poly(ethylene oxide)고분자전해질의 전도특성
김종욱,문성인,진봉수,구할본,윤문수 한국전기전자재료학회 1995 電氣電子材料學會誌 Vol.8 No.4
The purpose of this study is to research and develop solid polymer electrolyte(SPE) for Li secondary battery. We investigated the effects of lithium salts, plasticizer addition, temperature dependence of conductivity and electrochemical stability window of polyethylene oxide(PEO) electrolytes. PEO electrolyte completed with LiCIO$\_$4/ shows the better conductivity than the others. PEO-LiCIO$\_$4/ electrolyte, when EO/Li$\^$+/ ratio is 8, showed adequate conductivity around room temperature. By adding propylene carbonate and ethylene carbonate to PEO-LiCIO$\_$4/ electrolyte, its conductivity was higher than that of PEO-LiCIO$\_$4/ without those. Also PEO$\_$8/LiCIO$\_$4/ electrolyte remains stable up to 4.5V vs. Li/Li.