• Korean Journal of Soil Science and Fertilizer
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• v.42 no.spc
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• pp.29-32
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• 2009

Traditionally, the paddy fields in Korea, besides rice production, have multifunction such as water supplement source to ground water and prevention of floods via securing the rainfall during a monsoon season. Therefore, the development of food production technology to be adapted in the future climate change in Korea has to take into account the integration of the multi-function of paddy fields with IT, BT, and NT. This demands forward movements in agriculture paradigm as followings. First of all, a national strategy is necessary to maintain and conserve the agricultural farmlands. Second the agricultural structure needs to shift to low carbon green agriculture taking into account the energy balance. Third our attitude needs to be changed toward maximizing the multifunction of the paddy farming.

• Proceedings of the Korea Association of Information Systems Conference
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• 2000.11a
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• pp.6-11
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• 2000

수출입 관련 항만물류업무 처리의 효율화를 위해 1996년부터 도입된 EDI는 서류없이 각종 항만물류 및 통관업무를 효율적으로 처리하는데 큰 기여를 하고 있다. 그러나 기존의 방식은 VAN EDI 로써 폐쇄적인 VAN 망을 통하여 EDI VAN사업자가 사용자의 EDI문서를 관련 정부기관에 중계만을 하여 EDI문서에 나타난 각종 데이터의 누적을 통한 물류정보서비스는 제공되고 있지 않다. 한편, EDI를 수신한 각 정부기관에서는 필요한 물류요약정보를 얻기 위해 해당 EDI 문서에서 추출한 데이터를 저장하는 운영 데이터베이스에 접근하여 필요한 요약 정보를 리포트 형태로 프로그램하여 생성하고 있어 정보제공의 시간지연과 프로그램 업무의 과중 및 운영 데이터베이스에 대한 부하가 발생하고 있다. 본 논문의 목적은 이러한 상황에서 수출입 항만물류와 관련한 다차원 정보를 실시간제공하기 위한 데이터웨어하우스를 구축하는데 있다. 일반적으로 데이터웨어하우스는 운영데이터베이스로부터 다차원 구조의 데이터웨어하우스로 데이터를 추출, 전환, 복사함으로써 이루어지지만, 본 연구에서는 EDI 수신 기관의 운영데이터베이스보다 더 원천 데이터인EDI 문서로부터 데이터웨어하우스로 데이터 변환을 함으로써 항만물류 데이터웨어하우스의 데이터 추출 단계를 한 단계 줄였다. 현재 VAN EDI 방식은 그 폐쇄성과 비용 때문에 향후 인터넷을 이용한 XML/EDI로 기술 이전될 것이 예상되며 이러한 상황에서VAN EDI 포맷이 아닌 XML/EDI 문서로 부터 데이터웨어하우스로의 전환을 구현하였다. 본 연구에서는 관세청의 수출통관 EDI에 대해 이를 XML/EDI 로 XML 스키마를 정의하고 이로 생성된 XML 문서를 SQL 서버로 구현된 OLAP 용 데이터웨어하우스로 전환하였다. 본 연구를 통해 XML을 이용한 EDI체제에서 전자문서전송기능과 정보제공기능을 위한 데이터웨어하우스의 연동을 동해 EDI시스템을 다차원 의사결정정보 시스템과 통합하게 하여, 향후 인터넷 기반 XML/EDI 중계서비스에 있어 물류정보서비스도 원활하게 제공할 수 있게될 것으로 기대된다.

• Clean Technology
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• v.16 no.1
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• pp.19-25
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• 2010

In this work, the conversion of crystalline cellulose into polyols in the presence of hydrogen was examined over noble metal (Pt, Ru, Ir, Rh, and Pd) catalysts supported on activated carbon. For comparison, Pt/${\gamma}-Al_2O_3$ and Pt/H-mordenite were also investigated. Several techniques: $N_2$ physisorption, X-ray diffraction(XRD), inductively-coupled plasma-atomic emission spectroscopy (ICP-AES), temperature-programmed reduction with $H_2$ ($H_2$-TPR) and CO chemisorption were employed to characterize the catalysts. The cellulose conversion was not strongly dependent on the types of the catalyst used. Pt/AC showed the highest yields to polyols among activated carbon-supported noble metal catalysts, viz. Pt/AC, Ru/AC, Ir/AC, Rh/AC and Pd/AC.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.49 no.3
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• pp.237-242
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• 2004

A system for the production of transgenic plants has been developed for tall fescue (Festuca arundinacea Schreb.) via Agrobacterium-mediated transformation of mature seed-derived embryogenic callus. Seed-derived calli were infected and co-cultured with Agrobacterium EHA101 carrying standard binary vector pIG121Hm encoding the hygromycin phosphotransferase (HPT), neomycin phosphotransferase II (NPTII) and intron-containing $\beta$-glucuronidase (intron-GUS) genes in the T-DNA region. The effects of several factors on transformation and the expression of the GUS gene were investigated. Inclusion of $200\mu\textrm{M}$ acetosyringone (AS) in inoculation and co-culture media lead to a increase in stable transformation efficiency. Transformation efficiency was increased when embryogenic calli were co-cultured for 5 days on the co-culture medium. The highest transformation efficiency was obtained when embryogenic calli were inoculated with Agyobacterium in the presence of 0.1% Tween20 and $200\mu\textrm{M}$ AS. Hygromycin resistant calli were developed into complete plants via somatic embryogenesis. GUS histochemical assay and Southern blot analysis of transgenic plants demonstrated that transgenes were successfully integrated into the genome of tall fescue.

• Journal of Animal Science and Technology
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• v.46 no.2
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• pp.235-242
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• 2004

A system for the production of transgenic plants has been developed for Italian ryegrass(Lolium mult리orum Lam.) via Agrobacterium-mediated transformation of embryogenic callus. Mature seed-derived calli were infected and co-cultured with Agrobacterium EHA101 carrying standard binary vector pIG121Hm encoding the hygromycin phosphotransferase(HPT), neomycin phosphotransferase II (NPTII) and intron-oontaining $\beta$g1ucuronidase( intron-GUS) genes in the T-DNA region. The effects of several factors on transformation and the expression of the GUS gene were investigated. Inclusion of 200${\mu}M$ acetosyringone(AS) in inoculation and co-cultivation media lead to a significant increase in stable transformation efficiency. Increasing Agrobacterium cell density up to 1.0 in $OD_{600}$ during infection increased transfonnation efficiency of embryogenic calli. The highest transfonnation efficiency was obtained when embryogenic calli were incoulated with Agrobacterium in the presence of 0.1% Tween20 and 200${\mu}M$ AS. Hygromycin resistant calli were developed into complete plants via somatic embryogenesis. GUS histochemical assay and PCR analysis of transgenic plants demonstrated that transgenes were integrated into the genome of Italian ryegrass.

• Journal of Intelligence and Information Systems
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• v.29 no.1
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• pp.289-305
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• 2023

The rapid increase in the use of mobile devices is changing consumers' online shopping behavior. However, the difference in the effect on the conversion rate according to the time when consumers switch from a small screen to a large screen has not been sufficiently studied. In addition, the differences in the effect of device conversion on purchase performance according to the characteristics of each country's infrastructure have not been sufficiently studied. Against this background, this study aims to analyze whether the timing of switching from mobile devices to PC devices and the country's mobile Internet penetration rate are moderating the positive effect of device switching on purchase performance. For empirical analysis, Google Merchandise Store data was collected and 101,466 data from 130 countries were analyzed with a multilevel model. As a result of the analysis, consumers' device switching (i.e., mobile to PC) had a positive effect when it occurred in the middle of the consumer journey. However, it was analyzed that when device switching occurred at the later stage of the consumer journey, it had a negative effect on purchase performance. In addition, it was analyzed that the higher the mobile Internet penetration rate, the weaker the positive effect of consumer device conversion on purchase performance.

• Information Systems Review
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• v.1 no.1
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• pp.63-73
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• 1999

• Proceedings of the CALSEC Conference
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• 2000.08a
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• pp.371-384
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• 2000

■ 국방환경의 변화 - 지식정보전 중심으로 미래전 수행 개념의 변화 ■ 국방인력의 전문화 및 정예화 추진 - 병력집약형⇒기술집약형 인력 구조 전환 ■ 지식과 정보를 기반으로 하는 작지만 강한 군 육성 ■ 국방지식관리시스템 구축 및 운영 방안 제시(중략)

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2004.10a
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• pp.339-342
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• 2004

질적인 속성을 양적인 계열로 전환하여 측정할 수 있는 도구를 개발하는 과정에서 서스톤, 리커트, 어의분별 및 커트만 척도 등을 많이 활용한다. 이 측도들 중 우리는 리커트 척도에 대해 알아보고, 응답이 애매한 리커트 척도의 자료를 퍼지화하는 방법을 제안하고 그 자료에 대한 분석 방법을 연구하려고 한다.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2005.04a
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• pp.166-169
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• 2005

질적인 속성을 양적인 계열로 전환하여 측정하는 방법으로서 설문의 최소 문항으로서 최대의 효과를 나타내기 위하여 한 항목을 k번 측정하여 평균과 $95\%$ 신뢰구간을 퍼지수로 한 데이터들을 리커트 척도로 활용하여 내분비방법에 의하여 검정을 하였다.