• Title/Summary/Keyword: Code Diversity

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A Study on Direction of Authority Control by Surveying the Authority Control in University Libraries (대학도서관 전거제어 현황분석을 통한 전거제어 방안 모색)

  • Lee, Mihwa
    • Journal of Korean Library and Information Science Society
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    • v.43 no.3
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    • pp.5-26
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    • 2012
  • This study is to find the new method for authority control in Korea by surveying status of authority control in university libraries and by analyzing international conceptual model of authority control and VIAF. 2 kinds of survey were done: one is for libraries having authority records and the other is for libraries not having authority records. In survey result, libraries that have authority records want to sustain their own forms of authorized access points and libraries that have no authority records want the rules related to authority and the national cooperative authority control system to be constructed. Based on ICP 2009, FRAD conceptual model, VIAF and this survey result, new authority control is to respect the diversity of forms of the authorized access points. New authority control is to permit authority records that reflect provision for linguistic or cultural environments of each library, confirming to the national cataloging code. Therefore, authorized access points will be displayed according to user preferred forms. For this new authority control, it is needed to make national authority rule, to build the authority records according to library's own rules, and to construct the cooperative authority control system. Also for user preferred authority control, it is needed to describe detailed elements for authority control and relation data between authorized access points, between authorized access points and variant forms. This study could contribute to suggest new authority control that could accept all kinds of authorized access points preferred by nation, libraries, and users.

Study on the Characteristics of Bread with Jasmin Tea Powder (쟈스민차가루를 이용한 식빵의 특성 연구)

  • 황윤경;현영희;이윤신
    • The Korean Journal of Food And Nutrition
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    • v.17 no.1
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    • pp.41-46
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    • 2004
  • This study was designed to investigate the effective ratio of healthy bread with jasmin tea powder. The weight, volume, and color difference of bread with various jasmin tea powder was measured and the picture of bread was taken and the panel test was taken. The weight of bread was increased and the volume was decreased significantly according to increase of jasmin tea powder. To avoid the decrease of volume, the active gluten was added, but there was not shown the increse of bread volume by active gluten. In the result of panel test and volume measurement, addition of 3% jasmin tea powder was appropriate. Therefore, using the jasmin tea powder, the diversity of bread by functionality, nutritional composition, taste, color, flavor of jasmin tea powder can be developed. This result will support the background the development of jasmin tea bread of good quality.

LLR-based Cooperative ARQ Protocol in Rayleigh Fading Channel (레일리 페이딩 채널에서 LLR 기반의 협력 ARQ 프로토콜)

  • Choi, Dae-Kyu;Kong, Hyung-Yun
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.45 no.4
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    • pp.31-37
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    • 2008
  • Conventional cooperative communications can attain gain of spatial diversity and path loss reduction because destination node independently received same signal from source node and relay node located between source node and destination node. However, these techniques bring about decreased spectral efficiency with relay node and increased complexity of receiver by using maximal ratio combining (MRC). This paper has proposed cooperative ARQ protocol that can improve the above problems and can get the better performance. This method can increase the spectral efficiency than conventional cooperative communication because if the received signal from source node is satisfied by the destination preferentially, the destination transmits ACK message to both relay node and source node and then recovers the received signal. In addition, if ARQ message indicates NACK relay node operates selective retransmission and we can increase reliability of system compared with that of general ARQ protocol in which source node retransmits data. In the proposed protocol, the selective retransmission and ARQ message are to be determined by comparing log-likelihood ratio (LLR) computation of received signal from source node with predetermined threshold values. Therefore, this protocol don't waste redundant bandwidth with CRC code and can reduce complexity of receiver without MRC. We verified spectral efficiency and BER performance for the proposed protocol through Monte-Carlo simulation over Rayleigh fading plus AWGN.

An Exploratory Study of the Determinants of Global Sourcing Intention in Korean Clothing Sewing Industry: Focusing on Women's Knit Wear Production (국내 의류봉제 산업의 글로벌소싱 의향 고려요인 연구: 여성니트복종(women's knit wear) 생산을 중심으로)

  • Dabin Yoo;Sunwook Chung
    • Asia-Pacific Journal of Business
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    • v.14 no.4
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    • pp.67-85
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    • 2023
  • Purpose - This study seeks to investigate the determinants of global sourcing intention in clothing sewing industry, in particular with its focus on women's knit wear production. Design/methodology/approach - This study collected a unique set of qualitative data through 31 in-depth interviews with fashion brands, promotion agencies, and sewing factories between July 2023 and October 2023. In addition, it analyzed the dataset using the MAXQDA to complement the research findings. Findings - We have two findings. First, the interviewees commonly mentioned the following factors as reasons for considering global sourcing: the human factors(aging of skilled technicians and labor shortages), the financial factors(gap in production unit prices at home and abroad), the relational factors(lack of novelty), and the physical factors(loss of production infrastructure and network), while the human factors(skilled workforce), the production factors(delivery date and product quality), and the relational factors(timely communication and mutual trust) as reasons for continuing domestic sourcing. Additional code analysis of interview also supports this finding. On the other hand, there was also a subtle difference between buyers(brands) and suppliers(promotion agencies and processing plants), and buyers consider the exact delivery date critical so that they could see trend-sensitive women's knit wear on time, and suppliers took production costs, labor costs, and labor shortages, which are financial factors, more seriously. Research implications or Originality - This study provides a richer and more balanced view of existing literature, which has generally tended to introduce global sourcing across the clothing industry despite the existence of various diversity within the industry. In addition, through qualitative research, we introduce that the sewing industry is carried out according to complex factors, and by revealing and categorizing the determinants of global sourcing, we supplement the existing research on the clothing sewing industry centered on survey. On a practical note, this study introduces that there is a difference in view of domestic sourcing and global sourcing between buyers(brands) and suppliers(promotion agencies and sewing factories), suggesting practical implications for revitalizing networks and deriving win-win cooperation network models among members in the future.

CCD Photometric Observations and Light Curve Synthesis of the Near-Contact Binary XZ Canis Minoris (근접촉쌍성 XZ CMi의 CCD 측광관측과 광도곡선 분석)

  • Kim, Chun-Hwey;Park, Jang-Ho;Lee, Jae-Woo;Jeong, Jang-Hae;Oh, Jun-Young
    • Journal of Astronomy and Space Sciences
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    • v.26 no.2
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    • pp.141-156
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    • 2009
  • Through the photometric observations of the near-contact binary, XZ CMi, new BV light curves were secured and seven times of minimum light were determined. An intensive period study with all published timings, including ours, confirms that the period of XZ CMi has varied in a cyclic period variation superposed on a secular period decrease over last 70 years. Assuming the cyclic change of period to occur by a light-time effect due to a third-body, the light-time orbit with a semi-amplitude of 0.0056d, a period of 29y and an eccentricity of 0.71 was calculated. The observed secular period decrease of $-5.26{\times}10^{-11}d/P$ was interpreted as a result of simultaneous occurrence of both a period decrease of $-8.20{\times}10^{-11}d/P$ by angular momentum loss (AML) due to a magnetic braking stellar wind and a period increase of $2.94{\times}10^{-11}d/P$ by a mass transfer from the less massive secondary to the primary components in the system. In this line the decreasing rate of period due to AML is about 3 times larger than the increasing one by a mass transfer in their absolute values. The latter implies a mass transfer of $\dot{M}_s=3.21{\times}10^{-8}M_{\odot}y^{-1}$ from the less massive secondary to the primary. The BV light curves with the latest Wilson-Devinney binary code were analyzed for two separate models of 8200K and 7000K as the photospheric temperature of the primary component. Both models confirm that XZ CMi is truly a near-contact binary with a less massive secondary completely filling Roche lobe and a primary inside the inner Roche lobe and there is a third-light corresponding to about 15-17% of the total system light. However, the third-light source can not be the same as the third-body suggested from the period study. At the present, however, we can not determine which one between two models is better fitted to the observations because of a negligible difference of $\sum(O-C)^2$ between them. The diversity of mass ratios, with which previous investigators were in disagreement, still remains to be one of unsolved problems in XZ CMi system. Spectroscopic observations for a radial velocity curve and high-resolution spectra as well as a high-precision photometry are needed to resolve some of remaining problems.