• Title/Summary/Keyword: New combination

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Modal Combination Method for Prediction of Story Earthquake Load Profiles (층지진하중분포 예측을 위한 모드조합법)

  • Eom, Tae-Sung;Lee, Hye-Lin;Park, Hong-Gun
    • Journal of the Earthquake Engineering Society of Korea
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    • v.10 no.3 s.49
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    • pp.65-75
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    • 2006
  • Nonlinear pushover analysis is used to evaluate the earthquake response of building structures. To accurately predict the inelastic response of a structure, the prescribed story load profile should be able to describe the earthquake force profile which actually occurs during the time-history response of the structure. In the present study, a new modal combination method was developed to predict the earthquake load profiles of building structures. In the proposed method, multiple story load profiles are predicted by combining the modal spectrum responses multiplied by the modal combination factors. Parametric studies were performed far moment-resisting frames and walls. Based on the results. the modal combination factors were determined according to the hierarchy of each mode affecting the dynamic responses of structures. The proposed modal combination method was applied to prototype buildings with and without vertical irregularity. The results showed that the proposed method predicts the actual story load profiles which occur during the time-history responses of the structures.

Antibacterial and Antibiotic Activity Enhancing Effect of Extract and Fractions from the Root of Rumex japonicus Houtt (참소리쟁이 뿌리 추출물 및 분획의 항균 활성과 항생제 증강 활성)

  • Yang, Sun A;Kim, A Young;Pyo, Byoung Sik;Kim, Sun Min
    • Korean Journal of Medicinal Crop Science
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    • v.25 no.6
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    • pp.375-380
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    • 2017
  • Background: The objective of this study were to determine the antibacterial activity and antibiotic activity-enhancing effect of 70% ethanol extract of the root of Rumex japonicus Houtt. and its fractions when used in combination with gentamicin against aerobic skin flora. Methods and Results: The antibacterial activity and antibiotic (gentamicin) activity enhancing effect against aerobic skin flora were determined using the disc diffusion assay. Chloroform fraction (CF) and ethyl acetate fraction (EF) showed higher activities against Staphylococcus aureus and Staphylococcus epidermidis than those shown by other fractions. Regarding the antibiotic (gentamicin) activity-enhancing effect against aerobic skin flora, the n-hexane fraction (HF) and CF showed strong activity. The combination of HF and CF with gentamicin was evaluated using the broth dilution assay to determine the inhibitory effect on the growth of aerobic skin flora. The combination of CF with gentamicin exhibited the highest inhibitory effect on the growth of S. aureus and S. epdermidis. MTT assay performed to determine the viability of L929 cells revealed that EF treatment resulted in viability of 33.96 - 116.76% at the tested concentration. The combination of 70% ethanol extract and its other fractions with gentamicin showed low cell toxicity. Conclusions: Appropriate use of antimicrobial agents is important prior to the development of new antibiotics. The 70% ethanol extract of the root of R. japonicus Houtt. and its fractions showed significant synergism with gentamicin when used in combination against S. aureus and S. epdermidis. Thus, R. japonicus Houtt. could be used as a functional materials in antimicrobial-related fields.

A study of 3D animation using projection mapping in the space on the utilization (프로젝션 매핑을 사용한 3D 애니메이션의 공간에 따른 활용 사례 분석 연구)

  • Lee, Sooyeon
    • Cartoon and Animation Studies
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    • s.33
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    • pp.449-467
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    • 2013
  • Contemporary 21st century, the rapid development of technology has achieved due to the emergence of various digital devices, a variety of media to the diversification of the limits of visual representation is reduced. Therefore, the combination of technology and art, visual arts, giving limits of getting it free to the public will feel fresh new visual impact. Such a new approach to light of a combination of technology and art, a variety of fine art and motion picture of the visual arts, such as has been recognized as a new genre. Of the resolution of the projector by utilizing the current reality and unreality beyond the boundaries of the building or structure in the city, as a schematic design of the screen projected structure and mapping of the art technology in an attempt to integrate recent has been studied in various ways. The projected structure design and the mapping of the art technology in an attempt to incorporate recent research has been diverse. In this study, as a new technology of a projection mapping to study the technique of looking for the definition of mapping practices to maximize the effectiveness of Visual Perception 3D animation was applied to a case study. A combination of 3D animation and project mapping in the future the fusion of art and technology to meet the zeitgeist with new possibilities of visual art to create synergies that is expected.

Discussions on the Reconstruction of Visual Illusion in Dynamic Images - Take of Paul Sermon as an example (다이나믹 이미지 예술 중 착시의 재구성에 관한 연구 - 폴 셔먼의 을 중심으로)

  • GAO, XIAOYA;Paik, Joonki
    • Journal of the Korea Convergence Society
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    • v.12 no.10
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    • pp.189-201
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    • 2021
  • The art of dynamic images has experienced three development stages, including experimental films, recording art, and new media image. By introducing all kinds of new materials, new media to the art, and the art of dynamic images has created more freedom for art creation. With the development of digital information technology, dynamic image works have put forward an increasingly high requirement of visual art. The combination of dynamic images and visual illusion can give rise to different forms and expression methods, thus endowing artworks with more vigor. This paper provides an overview by sorting out the lineage and development of dynamic images in the background, as well as understanding the application and performance of contrasted visual illusion. Based on the understanding of the characteristics of visual illusion, we discuss the new characteristics of applying the theory of visual illusion to new media dynamic images in relation to the technical approach of dynamic images. Through the analysis of specific works of Telematic Vision, we search for its reasonable combination and find the appropriate technical means of implementation. We discuss how to use digital multimedia technology and spatial optical illusion to make the design more novel and impactful, and consider how the combination of digital dynamic image technology and visual illusion should be interpreted and applied.

Design Concept of the Seoul World Cup Stadium (서울월드컵경기장의 건축개념)

  • 류춘수
    • Journal of the Korean Professional Engineers Association
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    • v.34 no.5
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    • pp.18-24
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    • 2001
  • This Seoul World Cup Stadium is designed not only for FIFA's Football Game. This stadium would be a very huge multi-use urvan structure as a core of new developing west seoul. Architect's basic design concept is based on the combination of traditional korean symbolic form and ultra mordern high-tech.

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Tenuidraconema koreensis, a New Species of Marine Nematodes (Adenophorea: Desmodorida) from South Korea

  • Rho, Hyun-Soo;Kim, Won
    • Animal cells and systems
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    • v.8 no.3
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    • pp.155-163
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    • 2004
  • Tenuidraconema koreensis, a new species of free-living marine nematodes, collected from the subtidal coarse sediments and various invertebrates of Namae, is described. The new species differs from T. fiersi Decraemer, 1989, the only other species in the genus, by having the combination of the following characters: the position of twelve cephalic adhesion tubes in both sexes (anterior six cephalic adhesion tubes inserted on the rostrum and posterior six inserted on the body annules), and the number of posterior sublateral adhesion tubes (12 in male and 13 in female) and posterior subventral adhesion tubes (15 in male and 19 in female). This paper contains the description of the new species with illustrations and scanning electron microscope (SEM) photomicrographs. This is the first discovery of the monotypic genus Tenuidraconema outside the type locality.

A New Venture Performance Model in the Korean Information and Telecommunications Industry

  • Park, Myeong-Cheol;Lee, Sang-Woo
    • ETRI Journal
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    • v.22 no.4
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    • pp.51-65
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    • 2000
  • In this paper, we investigate on the determinants of new venture performance empirically and suggest a new venture performance model in the Korean Information and Telecommunications (IT) industry. A total of seven hypotheses is established and tested using a combination of factor analysis, cluster analysis, analysis of variance, and correlation analysis. Ninety-two sample ventures in the Korean IT industry were investigated and analyzed to test hypotheses. We found that new ventures performance depends on their environment, strategy, internal resources factors, and, most importantly, two-way and three-way interactions of these factors. These findings could be interpreted as supporting the general strategy theory that when environment and internal resources and fitted, performance might be maximized and, further, strategy is the means that make internal resources and environment fit. The venture performance model presented in this paper can explain how new ventures achieve their successes. The strategic implications to the venture firms are also discussed.

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