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Real-time News Video Indexing with Multi-modal Features
Sung-Yul Yoo,Dong-Wook Kang,Ki-Doo Kim,Kyeong-Hoon Jung 대한전자공학회 2007 ITC-CSCC :International Technical Conference on Ci Vol.2007 No.7
In this paper, an efficient real-time indexing algorithm for news video is presented. We adopted several multi-modal lowlevel features, which are selected after observing the audio-visual characteristics of news programs, in order to detect an anchor shots in news video. The overall structure of the proposed algorithm is composed of four stages: the pause detection, the fillin and throw-away processing, the audio classification, and the matching with motion activity stage. The simulation results show that the performance of the proposed algorithm is quite acceptable while satisfying the constraint of real-time.
Sung Min Bae,Hyun Na Koo,Tae Young Shin,Jae Bang Choi,Jae Young Choi,Kwang Sik Lee,Jong Yul Roh,Yeon Ho Je,Byung Rae Jin,Sung Sik Yoo,Jae Su Kim,Young In Kim,In Joong Yoon,Soo Dong Woo 한국응용곤충학회 2009 한국응용곤충학회 학술대회논문집 Vol.2009 No.10
The Classical Swine Fever Virus (CSFV) is a member of the Pestivirus genus of the Flaviviridae. The genome of CSFV is a positive single-stranded RNA molecule 12.3 kb and contains a single large open reading frame (ORF). The polyprotein composed of eight nonstructural and four structural proteins (nucleocapsid protein C and three envelope glycoprotein E0, E1 and E2). E2, the most immunogenic of the CSFV glycoproteins, induces a protective immune response in swine. To determine the characteristics of the CSFV, LOM strain, we investigated the nucleotide sequence of the glycoprotein E0, E1 and E2. Comparison of the LOM with the other strains revealed nucleotide sequence identity ranging from 97 to 98%. Expression of the glycoprotein E2 was identified by SDS-PAGE and Western blot analysis using anti-CSFV E2 monoclonal antibodies in Sf21 cells. The expression levels of glycoprotein E2 were observed from day 3 and 5 days maximum. In addition, its expression efficiency by media and cell line was investigated. The result showed that High-Five cells and Grace’s insect media for Sf21 were the best conditions for the expression of the glycoprotein E2.
Yoo, Chung-Yul,Kim, Jaegyeom,Kim, Sung-Chul,Kim, Seung-Joo Elsevier 2018 Journal of solid state chemistry Vol.267 No.-
<P><B>Abstract</B></P> <P>New layered perovskite-type oxyfluorides, CsSrNb<SUB>2</SUB>O<SUB>6</SUB>F and CsCaNb<SUB>2</SUB>O<SUB>6</SUB>F, were prepared <I>via</I> solid state reactions and their crystal/electronic structures were compared to those of a compositional analogue, CsNb<SUB>2</SUB>O<SUB>5</SUB>F which has a 3-dimensional pyrochlore-type structure. The CsSrNb<SUB>2</SUB>O<SUB>6</SUB>F and CsCaNb<SUB>2</SUB>O<SUB>6</SUB>F phases are derived from the <I>Dion-Jacobson</I> family of a general formula <I>A</I>[<I>A</I>′<SUB> <I>n</I>−1</SUB> <I>B</I> <SUB> <I>n</I> </SUB> <I>X</I> <SUB>3<I>n</I>+1</SUB>] with <I>n</I> = 2. Rietveld refinements based on synchrotron X-ray diffraction data revealed that CsSrNb<SUB>2</SUB>O<SUB>6</SUB>F belongs to the tetragonal system with <I>a</I> = 3.86716(1) Å, <I>c</I> = 11.45257(2) Å (<I>P</I>4/<I>mmm</I>, <I>Z</I> = 1), while CsCaNb<SUB>2</SUB>O<SUB>6</SUB>F adopts a 2<I>a</I> <SUB>p</SUB> × 2<I>a</I> <SUB>p</SUB> × 2<I>c</I> <SUB>p</SUB> superstructure with orthorhombic unit cell parameters, <I>a</I> = 7.64813(1) Å, <I>b</I> = 7.67516(1) Å, <I>c</I> = 22.43663(3) Å (<I>Bmmb</I>, <I>Z</I> = 8). The anion distributions in the lattices were confirmed by applying <I>Bond Valence Sum</I> (<I>BVS</I>) method; the F<SUP>-</SUP> ions occupy the central sites of the corner-sharing double perovskite block in the layered structures, but no ordering of anions was found in the pyrochlore structure. Through UV–Vis diffuse reflectance measurement, the band gap energy was estimated to 3.43 eV for CsSrNb<SUB>2</SUB>O<SUB>6</SUB>F, 3.65 eV for CsCaNb<SUB>2</SUB>O<SUB>6</SUB>F and 4.00 eV for CsNb<SUB>2</SUB>O<SUB>5</SUB>F. The band gap energy showed a good correlation with the Nb-O(F)-Nb bond angle(<I>θ</I>) in the oxyfluorides. As the Nb-O(F)-Nb bond angle deviates from 180°, the value of <I>E</I> <SUB>g</SUB> increase. The good linearity observed in the <I>E</I> <SUB>g</SUB> <I>vs.</I> cos(180 - <I>θ</I>) plot suggests that <I>E</I> <SUB>g</SUB> can be finely controlled by adjusting of the Nb-O(F)-Nb bond angle in the lattice.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The crystal structures of CsSrNb<SUB>2</SUB>O<SUB>6</SUB>F and CsCaNb<SUB>2</SUB>O<SUB>6</SUB>F belonging to the <I>Dion-Jacobson</I> family are reported. </LI> <LI> The crystal/electronic structures of the layered perovskite-type oxyfluorides are compared with the pyrochlore-type CsNb<SUB>2</SUB>O<SUB>5</SUB>F. </LI> <LI> The correlation between structural distortion and band gap energy is discussed. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>Layered perovskite-type, oxyfluorides Cs<I>A</I>Nb<SUB>2</SUB>O<SUB>6</SUB>F (<I>A</I> = Sr and Ca) and 3-D pyrochlore-type CsNb<SUB>2</SUB>O<SUB>5</SUB>F were synthesized and characterized by synchrotron X-ray diffraction data. The structural distortion evaluated by the Nb-O(F) bond angle shows a good correlation with the optical band gap.</P> <P>[DISPLAY OMISSION]</P>