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Geometry Padding for Segmented Sphere Projection (SSP) in 360 Video (360 비디오의 SSP를 위한 기하학적 패딩)

  • Kim, Hyun-Ho;Myeong, Sang-Jin;Yoon, Yong-Uk;Kim, Jae-Gon
    • Journal of Broadcast Engineering
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    • v.24 no.1
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    • pp.25-31
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    • 2019
  • 360 video is attracting attention as immersive media, and is also considered in VVC (Versatile Video Coding), which is being developed in JVET (Joint Video Expert Team) as a new video coding standard of post-HEVC. A 2D image projected from 360 video for its compression may has discontinuities between the projected faces and inactive regions, and they may cause the visual artifacts in the reconstructed video as well as decrease of coding efficiency. In this paper, we propose a method of efficient geometric padding to reduce these discontinuities and inactive regions in the projection format of SSP (Segmented Sphere Projection). Experimental results show that the proposed method improves subjective quality compared to the existing padding of SSP that uses copy padding with minor loss of coding gain.

Voice Analysis of Countertenors (카운터테너의 음성학적 분석)

  • 정성민;김문정;윤선옥;신혜정;박수경;신유리;권영경
    • Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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    • v.12 no.1
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    • pp.39-45
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    • 2001
  • Background and Objectives : A post-pubescent male classical singer has lower vocal register than a female classical singer. Countertenors who can produce higher vocal register like female classical singers with their falsetto voice and head resonance are recently active. The general purpose of this study is to analyze voice of countertenors and to determine the differences with those of classical singers. Materials and Methods : Four countertenors in Korea were examined using a videostrobos-copy and their voice were analyzed using aerodynamic, acoustic and voice range profile methods. Results and Conclusion : Countertenors could produce elevated fundamental frequency, voice intensity and mean air flow rate using large pulmonary capacity and head voiced falsetto. It means the presence of greater energy in countertenor is due to the more efficient conversion of the air flow to acoustic energy. But, they had unstable amplitude perturbation per each vocal cycle. The results indicated that countertenor is the acoustic products of different laryngeal mechanism with other classical register and it can be recognized as one of the registers of male classical singers.

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Characterization of Choristoneura fumiferana Genes of the Sixth Subunit of the Origin Recognition Complex: CfORC6

  • Wang, Xaiochun;Carstens, Eric B.;Feng, Qili
    • BMB Reports
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    • v.39 no.6
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    • pp.782-787
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    • 2006
  • A new protein was cloned and identified as the sixth subunit of Choristoneura fumiferana origin recognition complex (CfORC6). The newly identified 43 kDa protein CfORC6 is much bigger than DmORC6 (25.7 kDa) and HsORC6 (28.1 kDa), though it's 23.85% identical to DmORC6 and 23.81% identical to HsORC6. Although the molecular weight of CfORC6 is close to ScORc6 (50 kDa), CfORC6 is only 14.03% identical to ScORC6. By alignment, it was found that the N-terminal of CfORC6 has about 30% identities with other ORC6s, but about 100aa of C-terminal of CfORC6 has no identity with other ORC6s. Like ScORC6, CfORC6 has many potential phosphorylation sites, (S/T)PXK. Like DmORC6, CfORC6 has leucine-rich region in the relevant site. Northern Blot showed that CfORC6 mRNA is about 2,000nt. Southern Blot confirmed that there is one copy of CfORC6 gene in spruce budworm genome. Western blot showed that infection of Cf124T cells with CfMNPV didn't affect the expression levels of CfORC6, at least up to 26 hr post infection.

Prospect of plant molecular cytogenetics in the 21st century

  • Mukai, Yasuhiko
    • Proceedings of the Korean Society of Life Science Conference
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    • 2003.10a
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    • pp.14-27
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    • 2003
  • The genomes of Arabidopsis and rice have been fully sequenced. Genomic sequencing provides global information about genome structure and organization. A comprehensive research account of our recent studies conducted on genome painting, comparative genomics and genome fusion is provided in order to project the prospects of plant cytogenetic research in post-genomics era. Genome analysis by GISH using genome painting is demonstrated as an excellent means suitable for visualization of a whole genome, since total genomic DNA representing the overall molecular composition of the genome is used as a probe. FISH on extended DNA fibers has been developed for high-resolution FISH and has contributed to determining the copy number and order of genes. We have also mapped a number of genes involving starch synthesis on wheat chromosomes by FISH and compared the position of these genes on linkage map of rice. Macro synteny between wheat and rice can be observed by comparing the location of these genes in spite of the fact that the size of DNA per chromosome differs by 20 fold in two. Moreover, to approach our goal towards making bread and udon noodles from rice flour in future by incorporating bread making and the noodle qualifies in rice, we have been successful in introducing large genomic DNA fragments containing agronomically important genes of wheat into a rice by successive introduction of large insert BAC clones, there by expanding genetic variability in rice. We call this method genome fusion.

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The Intervention Effect of Cognitive Improvement Program for Elderly with Mild Cognitive Impairment (경도인지장애 노인의 인지향상 프로그램 중재효과)

  • Song, Myeong Kyeong;Kim, Soon Ock;Kim, Chun Suk
    • Journal of Korean Public Health Nursing
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    • v.32 no.1
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    • pp.81-95
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    • 2018
  • Purpose: This study was conducted to identify the effects of a group cognitive improvement program on cognitive function, depression and self-esteem in elderly individuals with mild cognitive impairment. Methods: This was an experimental study that employed a pre-post design of a non-equivalence control group. The subjects were 52 elderly people with mild cognitive impairment, 25 of whom were assigned to the experimental group and 27 to the control group. The program was conducted for a total of 12 sessions for 60 minutes each. Data were analyzed using the ${\chi}2-test$, Fisher's exact test, and Independent t-test with the SPSS 20.0 program. Results: After the intervention, the group who participated showed improvement in all areas of cognitive function based on MMSE-KC (F=26.37, p.<0.001), the Rey Complex Figure Test: copy (F=20.66, p.<0.001), Immediate memory of Seoul Verbal Learning Test-Elderly's version (F=29.68, p.<0.001), delayed memory (F=45.79 p.<0.001), memory recall (F=28.97, p.<0.001), Forward of Digit Span Test (F=9.25, p=.004), backward (F=8.33, p.=0.006), language comprehension (F=13.42, p.<0.001), and digit symbol coding (F=17.74, p.<0.001) relative to the control group. Moreover depression (F=24.09, p.<0.001) was decreased in program participants, whereas self-esteem (F=40.24, p.<0.001) was increased. Conclusion: The program could be a useful intervention because the results show that the group cognitive improvement program has a significant effect on cognitive function, depression and self-esteem in elderly with mild cognitive impairment.

Copper, Zinc-Superoxide Dismutase (Cu/Zn SOD) Gene During Embryogenesis of Bombyx mori: Molecular Cloning, Characterization and Expression

  • Hong, Sun-Mee;Kang, Seok-Woo;Goo, Tae-Won;Kim, Nam-Soon;Lee, Jin-Sung;Nho, Si-Kab
    • International Journal of Industrial Entomology and Biomaterials
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    • v.13 no.1
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    • pp.23-30
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    • 2006
  • BmCu/Zn SOD was isolated from early embryo of Bombyx mori using microarray analysis. The BmCu/Zn SOD gene was observed during the early embryonic stage with the strongest signal found at the unfertilizaion, fertilization and blastoderm stages. The BmCu/Zn SOD gene encodes a protein of 154 amino acids with a calculated Mr of 15 kDa. The deduced amino acid sequence of BmCu/Zn SOD indicated that the residues that form on the Cu/Zn binding site are conserved and that the sequence is a 60% identity to that of M. domestica. In a phylogenetic tree, Bm SOD was also close to Drosophila SODs rather than other insect SODs. The BmCu/Zn SOD gene exists as a single copy in the genome. Transcripts of BmCu/Zn SOD cDNA were identified by northern blot analysis. The expression of the BmCu/Zn SOD gene was observed weakly in most of larvae, pre-pupae, pupae and adult tissues. Also, the BmCu/Zn SOD gene was observed in early embryonic stage. Although the roles of SODs remains to be further elucidated, the high expression of BmCu/Zn SOD gene at before 24 h post fertilization suggests that this gene is of general importance during early embryogenesis in the Bombyx mod.

Meaning of 'Writing of Picture' in the Digital Era (디지털 시대 '사진쓰기'의 의미)

  • Kim, Ji-Young
    • The Journal of the Korea Contents Association
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    • v.12 no.4
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    • pp.156-163
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    • 2012
  • In 2011, in the Olympus advertisement appeared a copy of 'Writing of Picture'. Usually, the verb of 'Shoot' is commonly attached behind the picture, but a new sentence was made connecting 'writing' into the picture in the advertisement. With entrance of the digital era, the digital devices became popular, and the behaviors people post messages and pictures together on the internet site also became popular. Whether we first take a picture and then make a writing later, or whether we first make a writing and then take a picture later, the meaning of 'writing' and 'shooting' is actually alike in the digital era. People now use various images and writings, at the same time, of the pictures in expressing their own selves positively. This soon means not only that the pictures are helpful for writings, but also that the delivery of the meaning is not carried out only by characters. To the digital natives who have grown within many images, this atmosphere is a natural thing. In the field of Korean language education, the study of making use of the pictures and media for writings is in progress.

Transformation of Edwardsiella tarda and Transcriptional Characteristics of E-lysis Gene in Recombinant Bacterial Ghosts (어류 병원성 세균 Edwardsiella tarda의 형질전환 및 재조합 ghost 세균에서의 E-lysis 유전자의 전사 발현 특징)

  • Kwon, Se Ryun;Nam, Yoon Kwon
    • Korean Journal of Ichthyology
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    • v.19 no.2
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    • pp.83-87
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    • 2007
  • Edwardsiella tarda, a gram (-) pathogen causing edwardsiellosis in farmed fish, was transformed via electroporation with a plasmid expression vector driving the PhiX174 E-lysis gene under the transcriptional control by lambda PR regulatory sequence. The persistent maintenance of the plasmid vector in recombinant E. tarda was found in numerous subculture procedures over up to 6 months without any adverse effect on the original copy number of plasmids. Comparative examination based on semi-quantitative RT-PCR analysis on transcriptional efficiency of E-lysis gene between recombinant E. coli and E. tarda indicated that promoter strength and induction capacity of bacterial ghosts would be retarded in E. tarda as compared to the E. coli. However, the completeness of induction for bacterial ghosts in E. tarda was the same with E. coli, in which at least 99.99% of induction rate was possible and further the viability of recombinant bacteria was completely eliminated by a post-induction procedure including washing and freeze drying lyophilization.

Characteristics of avant-garde deconstruction-ism expressed in Alexander McQueen's Design (알렉산더 맥퀸 디자인에 나타난 아방가르드적 해체주의 특성)

  • Kwon, Hae-Sook;Keum, Yun-Jin
    • Journal of Fashion Business
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    • v.12 no.2
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    • pp.100-116
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    • 2008
  • This study aims to analyze the characteristics of deconstruction-ism expressed in the fashion of Alexander McQueen. The method and contents of this study are as follows. The three large categories for analysis are indeterminacy, decentralization, and intertextuality. The indeterminacy of meaning is divided into unstructured and unorganized factors in fashion, while decentralization can be categorized into cross-gender, subculture, and post-humanism. Lastly, inter-textuality is classified into factors of mixing mode and mixed styles. Materials for analysis were chosen from a total of 616 designs from the website, www.firstview.com, which carries McQueen's collection from 2000 S/S through 2007 F/W. My analysis qualitatively evaluates the frequency of each category and the characteristics of design. The result of this study is as followed. First, the avant-garde facets of inter-textuality are most prominent. In particular, McQueen has introduced retro fashion and ethnic factors of the third world, not to copy them but to create hybrid designs by using pastiches and mixing fashion styles. Moreover, he has enjoyed using two fabrics of different texture in order to inflict a shock and contrast, thus enriching his fashion. Second, the indeterminacy of meaning is the second most frequently shown facet of McQueen's fashion design. McQueen has employed unstructured expression techniques, which dismantle harmony and balance, the basic rule of design, and has presented unorganized images free from basic forms of design. He has made a new attempt to acknowledge clothing as an expressive artwork by allowing clothes to take a complete form when a person actually wears them. Third, the aspects of decentralization were also shown in McQueen's design. His trans-gender clothing dissolves the traditional division of men and women and adopts a mixed gender expression. Furthermore, he has even tried to express a fourth gender by connecting the human with machine or animal or by connecting the material with the non-material.

Development of Functional USB Solution to Contain Executable Software Using Scanning Mechanism (스캐닝 기법을 이용한 실행 소프트웨어를 담을 수 있는 기능성 USB 솔루션 개발)

  • Kim, Nam-Ho;Hwang, Bu-Hyun
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.16 no.5
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    • pp.947-952
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    • 2012
  • The technology suggested in this study is the method to contain executable software in a portable storage devices like the USB and install an application program to operate it in any client devices. To solve this problem, we can store pre-scanned information on the above client's files, registry, and services in the device before installing the proper application program to be installed using the scanning method and manage in the USB the resources that generated and changed by post-scanning the information after installing the above application program in the client's device. After that, necessary files in the client to be used can be copied for using, and after use, related files are deleted, and it also includes the process to return to the previous system environment. This method is advantageous in that once any sort of application programs needed to be installed gets to be installed in an external portable storage devices like the USB, the application program installed can be operated in any computer not raising any issues like illegal copy.