• Title/Summary/Keyword: KCI

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A Study on the Current Status of the Adoption of Creative Commons Licenses in Korean Citation Index Journals (KCI 등재지의 CCL 적용 현황 연구)

  • Kyoung Hee Joung
    • Journal of the Korean BIBLIA Society for library and Information Science
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    • v.34 no.2
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    • pp.233-249
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    • 2023
  • This study aimed to understand the application and types of Creative Commons Licenses (CCL) in Korean journals and to increase understanding of the state of open access in South Korea. The study collected and analyzed CCL-related information from the websites of 2,097 KCI journals and compared the findings with DOAJ journals and previous research. The results of the study are summarized as follows. Firstly, 18% (377 journals) of the KCI journals adopted CCL, and among them, approximately 90% (337 journals) were in the field of STEM. There were few academic journals applying CCL in humanities and social sciences fields. Secondly, the types of CCL adopted by KCI journals were NC licenses (90%), with CC BY-NC (85%) being the most common. This is a significant difference from DOAJ journals, where 52% of academic journals applied CC BY or CC BY-SA. However, fewer journals applied licenses of the ND licenses than DOAJ journals and Spanish journals. Thirdly, 44% (167) of the 377 academic journals that applied CCL were simultaneously for free in public databases and sold for a fee in commercial databases. 33% (125) were publicly available for free in public databases, and 9% (33) were sold in commercial databases.

A Study for Assumption of Stress Block Parameter for High-Strength Concrete (고강도 콘크리트 유효응력블럭 계수 추정에 관한 연구)

  • Jeong, Min-Chul;Yun, Sung-Hwan;Jeon, Jeong-Moon;Lee, Do-Hyung;Park, Tae-Hyo;Kong, Jung-Sik
    • Proceedings of the Korea Concrete Institute Conference
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    • 2010.05a
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    • pp.141-142
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    • 2010
  • This study is related with assumption of stress block parameter for high-strength concrete. The equivalent stress distribution block of KCI design code isn't matched with the real stress distribution of high strength concrete. In this study, we tried to suggest new type of stress block parameter based on both previous test data and theoretical process.

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Recycling Technology of Waste Product in Electro Galvanizing Line of Steel Company

  • Lee, Jae-Young;Lee, H. H.;Kim, D. Y.;J. G. Sohn
    • Proceedings of the IEEK Conference
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    • 2001.10a
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    • pp.281-285
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    • 2001
  • This technology Provides an economical Production of high value added goods applicable to electro chemicals by recycling of waste products in EGL(Electro Galvanizing Line). The waste products produced in EGL contain potassium chloride (KCI), nickel and zinc. Highly pure KCI and Zinc Chloride which are raw material of electro plating, can be produced by the development of the recycling process. The scope of this study ranges from laboratory experiments to pilot test in plant. We have developed the whole process of recycling technology such as purification method of waste products, fabrication methods of electro chemicals, basic design of plant, pilot scale production and evaluation of pilot goods, Developed electro chemicals were pure enough to satisfy the specification of steel company.

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PTCR Effects in KCI Molten Salt Synthesized $BaTiO_3$ (KCI 용융염 합성법에 의한 $BaTiO_3$ 의 PTCR 효과)

  • 윤기현;이은홍
    • Journal of the Korean Ceramic Society
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    • v.22 no.5
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    • pp.29-34
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    • 1985
  • The PTCR characteristics of the $BaTiO_3$ as a function of the molten KCl and dopant $Sb_2O_3$ were investitated. When the weight ratio of KCl to raw materials was above 0.1, $BaTiO_3$ was synthesized by calcining at 80$0^{\circ}C$ for 6 hrs. As the amount of the KCl increased the resistivity of the $BaTiO_3$ at room temperature incr-eased. This can be explained by charge compensation effect between electrons and holes and with microstruc-tures change of the specimens. The resistivity of the $BaTiO_3$ decreased with increasing amount of $Sb_2O_3$. In the time-current characteristics initial current decreased with increasing the ratio of KCl to raw materials but initial current increased and then decreased with the increase of the dopant $Sb_2O_3$. These results of the time-current characteristics can be explained by the resistivity-temperature characteristics.

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Effects of $K^+$ lon on in vitro RNA Splicing of T4 Phage Thymidylate Synthase Gene

  • Sung, Jung-Suk;Park, In-Kook
    • Journal of Microbiology
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    • v.34 no.1
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    • pp.49-53
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    • 1996
  • The effects of K$^{+}$ ion on the activity of RNA splicing of T4 phage thymidylate synthase gene have been investigated. The splicing activity was stimulated within the range of 5 to 20 mM concentration of KCI. When the concentration of KCI in the splicing reaction was brought to 100 or 200 mM a small amount of the exonl-intron product (1, 4 kb) was formed with large proportion of primary RNA transcript not undergoing splicing. This observation strongly suggests that there may exist come kinds of interferences with transesterification at the first step of splicing. Overall it can be concluded that K$^{+}$ ion exhibits very unique roles in RNA splicing of tdd gene depending on its concentration.ion.

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