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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.
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.
BTMSM/O<sub>2</sub> 유량변화에 따른 SiOCH 박막의 유전상수 특성
김종욱,황창수,김홍배,Kim, Jong-Wook,Hwang, Chang-Su,Kim, Hong-Bae 한국전기전자재료학회 2008 전기전자재료학회논문지 Vol.21 No.4
We have Manufactured the low-k dielectric interlayer fabricated by plasma enhanced chemical vapor deposition (PECVD), The thin film of SiOCH is studied correlation between components and Dielectric constant. The precursor was evaporated and introduced with the flow rates from 16 sccm to 25 sccm by 1sccm step in the constant flow rate of 60 sccm $O_2$ in process chamber. The chemical characteristics of SiOCH were analyzed by measuring FT/IR absorption lines and obtained each dielectric constant measuring C-V. Then compare respectively. ILD of BTMSM/$O_2$ could have low dielectric constant about $k\sim2$, and react sensitively. Also dielectric constant could be decreased by the effects of decreasing $CH_3$ and growing Si-O-Si(C) after annealing process.
BTMSM/O<sub>2</sub> 유량변화에 따른 SiOCH 박막 결합모드의 2차원 상관관계 특성
김종욱,황창수,김홍배,Kim, Jong-Wook,Hwang, Chang-Su,Kim, Hong-Bae 한국전기전자재료학회 2008 전기전자재료학회논문지 Vol.21 No.4
The dielectric characteristics of low-k interlayer dielectric materials was fabricated by plasma enhanced chemical vapor deposition (PECVD). BTMSM precursor was evaporated and introduced with the flow rates from 16 sccm to 25 sccm by 1sccm step in the constant flow rate of 60 sccm $O_2$ in process chamber. Manufactured samples are analyzed components by measuring FT/IR absorption lines. Decomposition each Microscopic structures through two-dimensional correlation analysis about mechanisms for the formation of SiOCH in $SiOCH_3$, Si-O-Si and Si-$CH_3$ bonding group and analyzed correlation between the micro-structure of each group. It is a tendency that seems to be growing of Si-O-Ci(C) bonding group and narrowing of Si-O-$CH_3$ bonding group relative to the increasing flow-rate BTMSM. The order of changing sensitivity about changes of flow-rate in Si-O-Si(C) bonding group is cross link mode$(1050cm^{-1})$ $\rightarrow$ open link mode$(1100cm^{-1})\rightarrow$ cage link mode $(1140cm^{-1})$.
김종욱 서울대학교 지리교육과 1994 地理敎育論集 Vol.31 No.1
This study examines regional studies and education for the current globalization movement in Korea. It also explores a new direction to regional studies and education for globalization. Results of the research are as follows : 1. The globalization has to be based on world regional studies. These studies require problem oriented and academic oriented approaches for better understanding of regional characteristics. Results of the academic study can be attained by using synthetic regional analysis and issue-based analysis. Of these two approaches, the synthetic analysis becomes important for globalization; 2. It is essential to increase financial support for individual research and for university departments which emphasize regional study including geography departments. As one of the essential fields of regional science, geography emphasizes the regional approach rather than the systematic approach for globalization movements; and, 3. Education of world regional geography at middle and high schools is essential to provide information of world regions. This type of education contributes to individual's awareness of world citizenship.