• Title/Summary/Keyword: National Technology

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An Exploratory Study on the Korean National R&D Trends Using Co-Word Analysis (단어동시출현분석을 통한 한국의 국가 R&D 연구동향에 관한 탐색적 연구)

  • Seo, Wonchul;Park, Hyunseok;Yoon, Janghyeok
    • Journal of Information Technology Applications and Management
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    • v.19 no.4
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    • pp.1-18
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    • 2012

  • This paper identifies technology trends of national research and development (national R&D) by exploiting Korean national R&D patents, ranging from 2007 to 2010. In this paper, co-word analysis (CWA), which is a method to identify the relationship among technology terms by using their co-occurrences, is incorporated into network analysis to visualize the relationships among technology keywords of national R&D patents and calculate network indexes concerning inter-relationship diversity and strength of technology keywords. As a result, this research found that inter-relationship among technology keywords in national R&D are getting increasingly strengthening in an overall sense. In addition, the keyword inter-relationship diversity-strength map proposed in this paper revealed some significant technological keywords of national R&D : core technology keywords including "sensor", "film" and "fuel" and emerging keywords including "biosensor" and "thermoelectric". Because the proposed approach helps identify interdisciplinary trends of technology keywords from a massive volume of national R&D patents in a visual and quantitative way, we expect that the approach can be incorporated as a preliminary into the R&D planning process to assist R&D policy makers to understand technology convergence of national R&D and develop relevant R&D policies.

  • https://doi.org/10.21219/jitam.2012.19.4.001 인용 PDF

Pervaporation of organic mixtures using modified cellulose acetate membrane

  • Ichikawa, Takayuki;Kusumocahyo, Samuel P.;Shinbo, Toshio;Iwatsubo, Takashi;Kameda, Mitsuyoshi;Ohi, Katsuhide;Yoshimi, Yasuo;Kanamori, Toshiyuki
    • Proceedings of the Membrane Society of Korea Conference
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    • 2004.05a
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    • pp.124-127
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    • 2004

  • Many studies have examined the use of liquid membranes for various processes such as separations of isomers, gas, organic mixtures, and removal of specific ions. It has been reported that liquid membranes show high selectivity. However, it is difficult to apply the liquid membranes to practical industrial processes because of the low stability of the liquid membranes.(omitted)

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