• Journal of KIISE:Software and Applications
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• v.29 no.1_2
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• pp.114-125
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• 2002

In this paper, we are proposing a hierarchical segmentation method that first segments the video data into units of shots by detecting cut and dissolve, and then decides types of camera operations or object movements in each shot. In our previous work[1], each picture group is divided into one of the three detailed categories, Shot(in case of scene change), Move(in case of camera operation or object movement) and Static(in case of almost no change between images), by analysing DC(Direct Current) component of I(Intra) frame. In this process, we have designed two-stage hierarchical neural network with inputs of various multiple features combined. Then, the system detects the accurate shot position, types of camera operations or object movements by searching P(Predicted), B(Bi-directional) frames of the current picture group selectively and hierarchically. Also, the statistical distributions of macro block types in P or B frames are used for the accurate detection of cut position, and another neural network with inputs of macro block types and motion vectors method can reduce the processing time by using only DC coefficients of I frames without decoding and by searching P, B frames selectively and hierarchically. The proposed method classified the picture groups in the accuracy of 93.9-100.0% and the cuts in the accuracy of 96.1-100.0% with three different together is used to detect dissolve, types of camera operations and object movements. The proposed types of video data. Also, it classified the types of camera movements or object movements in the accuracy of 90.13% and 89.28% with two different types of video data.

• Korean Journal of Microbiology
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• v.38 no.3
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• pp.168-172
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• 2002

Budding yeasts maintain an effective system to regulate intracellular pH in response to environmental pH fluctuation. In a previous study we reported that SHC1 plays a role in cell growth at alkaline condition, not at acid pH. We constructed a null mutant deleted an entire open reading frame for SHC1. To test whether the retardation in cell growth was caused by the absence of intracellular pH buffering capacity, we measured intracellular pH with a pH-sensitive fluorescent dye, C.SNARE. The intracellular pH of the mutant cell was much higher than that of wild-type cells, indicating that the mutant cells lack some types of buffering capacity. We also investigated the level of $Na^＋ and K^＋$ content with atomic mass spectroscopy after alkali shock. Wild-type cell showed a higher level of intracellular K^＋$ content, whereas there was no difference in $Na^＋$ level. The result suggested that K^＋$ is more important in the regulation of intracellular pH in yeasts.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.30 no.10A
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• pp.886-895
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• 2005

As the networked media technology have been grown in recent, there have been many research works to deliver high-quality video such as HDV and HDTV over the Internet. To realize high-quality media service over the Internet, however, the network adaptive streaming scheme is required to adopt to the dynamic fluctuation of underlying networks. In this paper, we design and implement the network-adaptive HD(high definition) MPEG-2 streaming system employing the frame-based prioritized packetization. Delivered video is inputted from the JVC HDV camera to the streaming sewer in real-time. It has a bit-rate of 19.2 Mbps and is multiplexed to the MPEG-2 TS (MPEG-2 MP@HL). For the monitoring of network status, the packet loss rate and the average jitter are measured by using parsing of RTP packet header in the streaming client and they are sent to the streaming server periodically The network adaptation manager in the streaming server estimates the current network status from feedback packets and adaptively adjusts the sending rate by frame dropping. For this, we propose the real-time parsing and the frame-based prioritized packetization of the TS packet. The proposed system is implemented in software and evaluated over the LAN testbed. The experimental results show that the proposed system can enhance the end-to-end QoS of HD video streaming over the best-effort network.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.39 no.3
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• pp.261-268
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• 2006

Fish-frames are processing byproducts, which are left after obtaining fillets or muscle during fish processing. The fish-frame generally consists of muscle, collagen, calcium, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). We used fish-frame powder (FFP) of chum salmon and skipjack tuna to prepare and characterize snacks for human consumption with different proportions of FFP. The crude protein and lipid contents of fish-frames were 16.3 and 9.4% for chum salmon and 18.6 and 8.3% for skipjack tuna, respectively. The volatile basic nitrogen (30.6 mg/100 g) and browning index (0.393) of FFP from chum salmon were lower than those of FFP from skipjack tuna. Thus, the FFP of chum salmon was better for making snacks than that of skipjack tuna. Five snacks were prepared with 0, 10, 20, 30, and 40% (w/w) substitution ratios of FFP from chum salmon. The moisture content of the snacks decreased (33.6 to 11.5%) with increasing FFP substitution ratio, whereas crude ash (2.9 to 7.5%), protein (11.4 to 18.4%) and lipid (13.7 to 35.1%) increased. Sensory scores for the texture and taste of the snack with 30% FFP were significantly higher (p<0.05) than those for other snacks; the color and flavor scores of all snacks did not differ significantly. The major fatty acids in the snacks were 16:0 and 18:0 as saturates, 18:1n-9 as monoenes, and 18:2n-6 and 18:3n-3 as polyenes. Snacks with FFP contained small amounts of EPA (0.5 to 0.8%) and DHA (1.3 to 1.8%) in the total lipid composition. The total amino acid content (16.08 g/100 g) of the snack with 30% FFP was higher than that of the snack without FFP (11.18 g/100 g), and the major amino acids were aspartic acid, glutamic acid, glycine, leucine, and lysine. The calcium and phosphorus contents of the snack with 30% FFP were 1,272 mg/100 g and 854 mg/100 g, respectively, and their ratio was the optimal range (2:1 to 1:2) for body absorption efficiency.

• Proceedings of the IEEK Conference
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• 2001.09a
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• pp.195-198
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• 2001

비디오 데이터의 효율적인 저장, 관리를 위해서는 장면진환 검출을 통한 비디오 분할 기술에 대한 연구가 필요하다. 본 논문에서는 MPEG 압축 비디오 상의 B(Bidirectional) 프레임의 특성을 복호화 과정을 거치지 않고 직접 추출하여 I(Intra), P(Predictive), B(Bidirectional) 프레임에 제안받지 않고 장면전환을 검출해 내는 방법을 제안한다. 장면전환 검출을 위해 복호화 하지 않고 필요한 데이터만을 추출해 내어 B 프레임의 특징만을 이용해 검출하므로 빠르면서도 정화한 장면전환을 검출한다. 또한 카메라 움직임이나 빛의 변화 같은 잡음에 강건한 방법을 제안한다.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10e
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• pp.85-87
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• 2002

본 논문은 SNMP(Simple Network Management Protocol)기반의 ATM 교환 장비를 CMIP(common management information protocol)기반의 관리망에 연동하기 위한 Q3 Adaptor 기능 중 ATM 연결 관리와 Frame Relay 연동 관리를 소개한다. 본 논문의 ATM연결 관리는 점대점(Point-to-Point Permanent Virtual Connection) PVC(P)로 한정하고, FR 연동 관리는 ATM/FR 연결의 One-to-One PVC로 한정하며 ATM 밀 ATM/FR 연결에 대하여 CMIP Manager, Q3 Adaptor 및 교환 장비의 DB간 불일치 현상을 극복하기 위한 현행화 기능도 소개한다.

• Proceedings of the Korea Society of Environmental Toocicology Conference
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• 2001.05a
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• pp.141-141
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• 2001

The arsenic resistance operon from pMH12 in Klebsiella oxytoca contains two regulatory genes. The first open reading frame for arsR extend up to 348 bp and has a translational product corresponding to a protein of 116 amino acid residue polypeptide with a molecular mass of 13 kDa. And the second ORF for arsD extend up to 360 bp and express a protein of 120 amino anid residue polypeptide with 13kDa. (omitted)

• The Transactions of the Korean Institute of Electrical Engineers P
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• v.51 no.3
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• pp.126-131
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• 2002

This paper is proposed to position and speed control of interior permanent magnet synchronous motor(IPMSM) drive without mechanical sensor. The rotor position, which is an essential component of any vector control schemes, is calculated through the instantaneous stator flux position and an estimated flux value of rotating reference frame. A closed-loop state observer is implemented to compute the speed feedback signal. The validity of the proposed sensorless scheme is confirmed by simulation and its dynamic performance is examined in detail.

• Proceedings of the Korea Concrete Institute Conference
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• 1999.04a
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• pp.487-492
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• 1999

The purpose of this study to find the mixture of concrete for Top-Down method. Throughout test of elapsed time change and L-type flow, it was proposed basic performance and level of top-down method concrete. When change as to elapsed time is considered, so series of F10 added 10% S.P satisfied slump and demanded flow (60$\pm$5cm), and L-type slump, L-type flow satisfied liquidity, it can be considered basic mixture of designed actual frame later.

• Proceedings of the Korean Society of Applied Pharmacology
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• 1993.04a
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• pp.61-61
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• 1993

사람의 혈액의 백혈구로부터 Polymerase Chain Reaction 방법으로 $\beta$$_2$-adrenergic receptor 유전자를 증폭하였다. 이 증폭된 유전자를 pbluescript KS(＋)에 cloning하였으며, 제한효소지도 작성과 부분적인 염기배열 확인으로 증폭된 유전자가 사람의 $\beta$$_2$-adrenergic receptor 유전자임을 확인하였다. $\beta$$_2$-adrenergic receptor 유전자를 N말단의 아미노산이 21개 제거되도록 결손시킨후 yeast의 pSec5의 Killer toxin signal sequence의 뒤에 in-frame으로 연결하였다. 현재 효모에서의 발현양상 및 발현된 단백질의 활성을 조사중이다.