• Title/Summary/Keyword: Science and technology

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Demand Survey Method for Commercialization of Police Science Technology and Equipment

  • Myeonggi, Hong;Junho, Park;JeongHyeon, Chang;Seongju, Hong
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.17 no.2
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    • pp.609-625
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    • 2023

  • This study is a demand research for the selection of public safety science and technology equipment and suggests an empirical research method. The technology demand survey is the beginning of the selection of innovative technology. And it is the basis of collecting information required for the technology required in the market and helping to apply it to the field. The demand survey for police science and technology can reduce the uncertainty of crime prevention and help the smooth implementation of security policies. However, in Korea, adoption of security science and technology equipment was centered on social issues or researchers' opinions rather than the demands of field users. Until, there was no research has been conducted on the demands of field police officers for selection of security science and technology equipment in Korea. Also, there was no preferential study for the demand for security science and technology equipment. Therefore, this study proposes a methodology that can systematically identify the needs for the technology and equipment of field experts suitable for the public security situation for the selection of security science and technology equipment. Specifically, we propose a sample design for a technology classification system and a survey tool for technology awareness and satisfaction. It is expected that this tool will provide a classification system for security science and technology equipment selected for the Korean police and will help determine the priority of equipment suitable for the field.

  • https://doi.org/10.3837/tiis.2023.02.018 인용 PDF HTML

Preparation and Characterization of Core/Shell-type Ag/Chitosan Nanoparticles with Antibacterial Activity

  • Lin, Yue;Jing, Wang;Kang, Pan;Xiaoming, Zhang;Zhouping, Wang;Wenshui, Xia
    • Bulletin of the Korean Chemical Society
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    • v.32 no.4
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    • pp.1277-1281
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    • 2011

  • Making use of chitosan (CS) and ethylenediaminetetraacetic acid (EDTA) as a reaction system, CS-EDTA nanoparticles were synthesized through a facile counterion complex coacervation method. $Ag^+$ could enter porous CS nanoparticles synthesized with this method, allowing Ag nanoparticles within chitosan nanoparticles were synthesized by reducing silver nitrate with chitosan. Because of the noncovalent interaction between CS and EDTA, the EDTA could be easily removed via dialysis against water, and pure core/shell-type Ag/CS nanoparticles could be obtained. The nanoparticles showed higher antibacterial activity toward E. coli than the active precursor Ag nanoparticles and CS.

  • https://doi.org/10.5012/bkcs.2011.32.4.1277 인용 PDF KSCI