• 제목/요약/키워드: e-Resources

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e-무역상사의 발전과제에 관한 연구 (A Study on the Issues for Developing e-Trade Service Provider)

  • 이봉수
    • 무역상무연구
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    • 제20권
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    • pp.423-440
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    • 2003
  • The trial business of e-trade service providers for supporting small enterprises to find their markets abroad is about to begin from the end of March, 2003. The department of Industrial Resources held the "Committee of e-trade service provider selection" with professors of e-trade field, and selected three companies: ECplaza, EC21 and Tpage Global. The e-trade service providers combine the various technologies of on-line trades and off-line trades to support small enterprises with lack of marketing skills by intermediation of overseas buyers and production, registration of e-catalogs and offers, administration of inquiries, trade negotiations, and contract settlement. Prospective small enterprises with exports under US$ 5 million will be selected by 2005. The selected companies will be supported fully by the government, and will be provided with the services by the e-trade service providers. e-Trade service will be the most potential and successful ones in the future, which helps traders and organizations preparing for globalization.

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수요자 중심의 e-비즈니스 교육과정 개발에 관한 연구 (A Study on e-Business Curriculum : A Customer-oriented Approach)

  • 최재영
    • 디지털산업정보학회논문지
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    • 제7권4호
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    • pp.141-152
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    • 2011
  • The Internet is changing old organizational schemes, including education. A growing number of universities are creating curriculums to reflect these changes. Economic market is being opened to the international world, and in order to overcome the difficulties are demanding continuous supply of men power from university to efficiently manage human resource and implement superior e-business model. Technology innovation plays an important role in the sustainable grows of the firm in the global economy. The objective of this study is to suggest an e-business curriculum for e-business department. We will analyze what kind of people is needed for e-business, and provide appropriate curriculum for educating suitable human resources, which could be for university program. This study may contribute to the much needed systematic analysis for e-business curriculum. We prioritize e-business curriculum selected and rank their importance through an exploratory study for suggesting the undergraduate curriculum.

Simultaneous Determination of Vitamin A and E in Infant Formula by HPLC with Photodiode Array Detection

  • Lee, Hong-Min;Kwak, Byung-Man;Ahn, Jang-Hyuk;Jeong, Seung-Hwan;Shim, Sung-Lye;Kim, Kyong-Su;Yoon, Tae-Hyung;Leem, Dong-Gil;Jeong, Ja-Young
    • 한국축산식품학회지
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    • 제31권2호
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    • pp.191-199
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    • 2011
  • The objective of this study was to develop a method to simultaneously quantify vitamins A and E in infant formula. To determine the vitamin A and E content, vitamin A and four different vitamin E isomers (${\alpha}$-, ${\beta}$-, ${\gamma}$-, and ${\delta}$-tocopherol) were separated by high performance liquid chromatography with a photodiode array detector using a Develosil RPAQUEOUS RP-$C_{30}$ column ($4.6{\times}250$ mm, 5 ${\mu}M$). The vitamin A and E contents in the certified reference material determined using this method were within the certified range of standard values. The limits of detection (LODs) and limits of quantitation (LOQs) for vitamin A were 0.02 and 0.06 ${\mu}g/L$, respectively. LODs and LOQs for the vitamin E isomers ranged from 0.20 to 0.55 and from 0.67 to 1.81 ${\mu}g/L$, respectively. Linear analyses indicated that the square of the correlation coefficient for the vitamin A and E isomers was 0.9997-0.9999. The recovery of vitamins ranged from 96.69 to 97.79%. The results demonstrate that this novel method could be used to reliably analyze vitamin A and E content in infant formula.

Development of Microsatellite Markers and their Use in Genetic Diversity and Population Analysis in Eleutherococcus senticosus

  • Lee, Kyung Jun;An, Yong-Jin;Ham, Jin-Kwan;Ma, Kyung-Ho;Lee, Jung-Ro;Cho, Yang-Hee;Lee, Gi-An
    • 한국자원식물학회지
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    • 제30권3호
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    • pp.323-330
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    • 2017
  • Eleutherococcus senticosus (Siberian ginseng) is an important medicinal tree found in northeast Asia. In this study, we analyzed the genome-wide distribution of microsatellites in E. senticosus. By sequencing 711 clones from an SSR-enriched genomic DNA library, we obtained 12 polymorphic SSR markers, which also revealed successful amplicons in E. senticosus accessions. Using the developed SSR markers, we estimated genetic diversity and population structure among 131 E. senticosus accessions in Korea and China. The number of alleles ranged from 2 to 11, with an average of 7.4 alleles. The mean values of observed heterozygosity ($H_O$) and expected heterozygosity ($H_E$) were 0.59 and 0.56, respectively. The average polymorphism information content (PIC) was 0.51 in all 131 E. senticosus accessions. E. senticosus accessions in Korea and China showed a close genetic similarity. Significantly low pairwise genetic divergence was observed between the two regions, suggesting a relatively narrow level of genetic basis among E. senticosus accessions. Our results not only provide molecular tools for genetic studies in E. senticosus but are also helpful for conservation and E. senticosus breeding programs.

구기자품종의 구기자혹응애 저항성 유전 (Inheritance of Resistance to Gall Mite(Eriophys macrodonis) in Boxthorn (Lycium chinese) Cultivars)

  • 최재을;차선경;김영창;김진희;강희경
    • 한국자원식물학회지
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    • 제15권3호
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    • pp.298-304
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    • 2002
  • 구기자품종의 혹응애에 대한 저항성 반응 및 저항성 유전양식 을 검정하기 위하여 저항성 품종과 감수성 품종을 인공교배 하여 얻은F$_1$집단의 포장자연 발생율에 의하여 저항성을 조사한 결과 다음과 같은 결과를 얻었다. 1. 구기자혹응애 저항성 품종인 일본 1호,중국 1호를 감수성인 CL42-56과 교배한 F$_1$은 혹응애 저항성과 감수성이 3 ; 1로 분리되었으며, 일본 1호와 중국 1호를 교배한 F$_1$은 혹응애 저항성과 감수성이 15 : 1로 분리 되었다. 2. 일본 1호와 중국 1호의 혹응애 저항성은 hetero 인 두 개의 우성유전자에 의해 지배되며, 저항성 유전자를 E1e1E2e2로 명명하였다. 3. 청양구기자를 CL42-56에 교배한 F$_1$은 혹응애 저항성과 감수성의 분리비가 명확하지 않았으며 변이 의 폭이 크므로 청양구기자의 혹응애 저항성은 주동유전자와 polygenes에 의해 지배되었다. 4. 일본 1호와 중국 1호는 혹응애 저항성 품종 육성을 위한 모본으로 우수하였으며, 청양구기자도 저항성 모본으로서 가치가 인정되었다.

Kinetics of Thermal Inactivation of Peroxidases and Polyphenol Oxidase in Pineapple (Ananas comosus)

  • Lee, Ting Hun;Chua, Lee Suan;Tan, Eddie Ti Tjih;Yeong, Christina;Lim, Chew Ching;Ooi, Siew Yin;Aziz, Ramlan bin Abdul;Aziz, Azila binti;Sarmidi, Mohd Roji bin
    • Food Science and Biotechnology
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    • 제18권3호
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    • pp.661-666
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    • 2009
  • The heat tolerance and the inactivation kinetics of peroxidase (POD) and polyphenol oxidase (PPO) in pineapples (Ananas comosus) were studied in the temperature range $45-95^{\circ}C$. The kinetic parameters, such as deactivation rate constant (k), activation energy ($E_a$), and decimal reduction rate (D) of the thermal inactivation process, were determined. POD in pineapples showed biphasic inactivation behavior at temperatures range $45-75^{\circ}C$ but was monophasic at $85-95^{\circ}C$. This indicate that POD has 2 isozymes, namely heat labile and heat resistant, with $E_a$ of 68.79 and 93.23 kJ/mol, respectively. On the other hand, the heat denaturation of pineapple PPO could be described as simple monophasic first-order behavior with $E_a$ of 80.15 kJ/mol. Thus, the results of this study is useful in blanching technology where it shows a shortened time with higher temperature can be applied. The determination of the heat tolerance and inactivation POD and PPO, at different temperature range as done in the present work, was very important to improve the blanching process. This also will help to optimize the pineapple canning process which is one of the most important food industries in many tropical regions.