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      • A Study on Korean Products Distribution through Overseas Purchasing in China

        Dai,Wen-Qian,Lee,Jong-Ho 한국유통과학회 2019 KODISA ICBE (International Conference on Business Vol.2019 No.-

        Nowadays, Korean products are prevailing all over the world. Especially in China they including cosmetics, clothes, etc. are very popular. But because of THAAD, China s people can t go or travel to Korea. Instead of travelling Korea, they usually make use of overseas direct purchasing with the booming in current online shopping. Ironically, in spite of bad conditions, they used to buy Korean cosmetics by way of overseas purchasing . Therefore the revenue on Korean cosmetics is growing up more and more. According to the results, first, the security, convenience and information provided by the overseas direct purchase have already had a positive impact on the satisfaction. Second, the quality of the delivery service is composed of four factors: rapidity, reliability, intimacy and correctness. third, the research results indicate that the satisfaction level has a positive impact on the re-purchase intention.

      • 판소리와 敍事巫歌의 對比硏究

        徐大錫 이화여자대학교 한국문화연구원 1979 韓國文化硏究院 論叢 Vol.34 No.-

        Both 'Pansori' and Korean Shamanistic Narrative Songs (SNS) share a common point " in that they are both forms of' oral narrative verse. However the former has been transmitted by professional singers, or 'Kwang Dai" and the latter, by Korean Shamans through their rituals. This study compared and contrasted 'Pansori' with SNS based upon the following four view points: 1. The characteristics of literary genre 2. The form of oral performance 3. The structure of the script 4. The composition style of the script The results of the study are as follows : 1. Pansori is a form of musical art which uses musical tones corresponding to a song's literary contents and SNS is the same in that sense. But in SNS, the verbal content play a major role which the musical tones and feelings play a relatively minor role. 2. SNS has two forms of oral performance, the recitative type and musical play (singing)type, similar to that of Pansori'. The early form of oral performance of 'Pansori' was similar to the recitative type. It seems that development has been made from recitative to musical play (singing)similar to that of SNS history. SNS has originated from shamanistic myths. The recitative type has been used to call the spirit of god in the rituals. The recitative type, however, has been decreasing as the worship for the Shamanistic god decreased. To singing type, in the meantime, has become increasingly popular. 3. In 'Pansori' both ordinary speech and singing are used interchangeable. Originally, the recitative performance was a proper form of oral performance bur the present varieties have been developed to entertain the audience. The musical play of SNS uses the same technique as does 'Pasori'. 4. 'Pansori' sings 'kwang Dai' composed the oral text using ready made literary units such as folksongs, magic formulas, and others as did the shamans. Singers had to depend upon their memory and verbally improvised new items, The principle of composition of Korean Oral Narrative Verse seems identical to that of the European oral epic.

      • 韓國에 있어서의 協業化의 現況 및 그것이 農村의 社會構造變動에 미치는 影響 : 示範協業組織의 事例硏究를 中心으로

        金大煥 이화여자대학교 한국문화연구원 1970 韓國文化硏究院 論叢 Vol.16 No.-

        In the way of modernizing the rural community, one of the most urgent problems is to promote the increase of income and improve productivity in the small-scaled land system like that of Korea. Although there are many ways for acquiring the broad economic, social and political forces that lead to societal or community change, my factual assessment of sociological aspect is the concern that the cooperative farm system will be available to solving the agricultural problems and rural reorganization in Korea, where farm land has faced the radical change by the urbanization and industrialization. The cooperative movement has a history longer that a century in the world. It has also existed in the United States for over ninety years. At one time it was widely massive attempts to plan this organization have been undertaken in Israel, Denmark and Japan. Having been interested in the field of rural sociology, especially social organization, population mobility and urbanization through the social economic development, for more that 10 years, I had fortunately an opportunity of studying the cooperative structures. This report will be helpful for the explanation to understand the reality of cooperative agricultural system and rural structure comparing with Japanese rural reorganization. The contents of this paper are as follows; 1) preface 2) Korean rural structure and agricultural system. 3) Rural disorganization in the process of industrialization. 4) Experiences of cooperative system and its future. 5) Field-study of Korean cooperative systems and their analysis. 6) Planning for the cooperative system and social accommodation. 7) Sociological analysis of cooperative system. 8) Conclusion-The necessity of cooperative associations. Korean rural society has now faced the shortage of farm-labour, even though she has more than 51 percent farmers of total population, for the rural community loses feasible labour-power of adult by the migration from rural to urban area. Both of the shortage of labour and large scaled-land system are naturally easy to bring the mechanization of agricultural production in relation to the subsidiary industry. Some theorists insist that the cooperative system is the sole way to solve the problems the rural community faces now. Of course the application of the planning method to these problems is not easily accomplished. But we should remind that one of the factors promoting the increase of agricultural production in the United States is due to the modern management of corporation. In other words, the post economic boom in American rural communities has not only accelerated the decline of old family-capitalism but increased the importance of larger corporation which has synchronized the other directed conformity of the new managerial society. The five cooperative models Baik-Un-San, Kwang-ju, Un-jang-San, Pack-Dal and Dai-Ri cooperative farms, present us many problems whether planning can be made more scientific, systematic and effective. Most of those who are engaged in studying believe that it is in large part an art, compounded of experience, common sense, and professional expertness in a given realm of human affairs which are leadership, human relation and management of labour and technique. I hope this report could suggest a useful sense of great advantage to the orientation of Korean rural community.

      • AFB₁ 대사에서 phloretion의 이중 활성 효과

        임대원,이광,고상상,진효연,은상용,최병민,김복량 圓光大學校 醫科學硏究所 2008 圓光醫科學 Vol.23 No.1

        Aflatoxm B₁(AFB₁) is a potent hepatocarcinogen in experimental animals and a hazard to human health in several parts of the world. AFB₁ is activated to its ultimate carcinogenic intermediate, AFB₁-8,9-epoxide, by cytochrome P450(CYP) 1A2 and CYP3A4 in human liver and the intermediate is decomposed by several glutathione S-transferase(GST) including GSTA2, GSTM1 and GSTP1. In this study, we investigated the effects of phloretin on the enzyme systems which are involved in the activation and detoxification of AFB₁. The metabolic intermediate of AFB₁ was measured with HPLC. We found that phloretin could strongly inhibit the activities of CYP 3A4 and CYP1A2 in a dose dependent manner. Phloretin induced the antioxidant-response element(ARE)-mediated gene expression, including GSTs. The expressions of GSTA2, T1, M1, and GSTP1 were induced by 10μM phloretin. The decomposition of AFB₁-8,9-epoxide was measured with GSH conjugating activity of the epoxide. The rate was increased to 1.5 fold when HepG2 cells were treated by 10μM phloretin for 12h. In the mean while, the total GST activitives toward CDNB in HepG2 cells were not changed by the treatment with phloretin. The results demonstrate that phloretin has strong chemopreventive effects against AFB₁ toxicity through the inhibition of AFB₁ activation and induction of GSTs.

      • 리프팅 기법을 이용한 semi-blind 워터마킹

        김대경 한양대학교 이학기술연구소 2002 이학기술연구지 Vol.5 No.-

        두 개의 필터 계수집합으로 리프팅 기법을 이용하여 두 단계 웨이브렛 분해를 한후 주변의 메디안 값보다 큰 픽셀에 워터마크를 삽입하고 이 위치에 플레그 값을 1호정한다. 공격을 한 후 같은 방법으로 워터마크를 추출하여 플레그 값을 비교하여 저작권을 증명한다. Recently, digital contents can be easily accessed and modified by various digital technology. For Protecting copyright or intellectual properties of digital data, digital watermarking technique has attracted considerable. In this paper, we propose a robust watermarking scheme for digital images based on the lifting scheme which provides simple construction of second generation wavelets. The original image is transformed into wavelet domain two sets of lifting filters; one is for usual wavelet filter, the ithers is for embedding watermarks whose locations are created randomly in a selected wavelet domain with secret key.

      • TiO₂를 이용한 프로필렌 가스의 광촉매 산화반응

        정대일,이동희,김용환,김현숙,이용균,박유미,최순규,김동현 동아대학교 환경문제연구소 2001 硏究報告 Vol.24 No.1

        Photocatalyzed degradation of propylene gas was carried out over precoated titanium dioxide(anatase) illuminated W light in a flow reactor. photocatalytic oxidation of propylene gas indicated high conversion rates (78.0%) to CO₂ gas. And photocatalytic oxidation of gas according to a fold, twofold, and threefold of titanium dioxide(anatase) respectively gave high conversion rate. The longer reaction time was, the higher conversion rate to CO₂ gas showed.

      • Benzodiazepinone과 1,5-Benzodiazepine 유도체의 합성 연구

        정대일,이용균,박유미,최태원,정일수,김인식,김윤영 東亞大學校 1997 東亞論叢 Vol.34 No.-

        The reaction of o-phenylenediamine 5 with acrylic acid 11 in the presencce of P₂O5+H₃PO₄afforded benzodiazepinone 13 and pyridobenzodiazepinono 17. The reactions of o-phenylenediamine 5 with acrylic acid 11 in the presence of PPA or SiO₂afforded only benzodiazepinone 13. But the reaction of O-phenylenediamine 5 with acrylic acid 11 in the presence of acetonedicarboxylic acid 18 or acetonedicarboxylic acid 18 and PPA or acetonedicarboxylic acid 18 and SiO₂was respectively synthesized 2,4,4,-trimethyI-3H-5-hydro-1.5-benzodi-azepine 23 as new cyclic imine compound. We propose that formation of 2-(2`-imine)propyI-N-isopropylidene aniline proceed though 2-amino, N-isopropylidene aniline intermediate C and 2-(N-a-methylethyI) amino, N-isopropylidene aniline intermediate G. The reaction of o-phenylenediamine 5 with acetonedicarboxylic acid 18 in the presence of PPA or SiO₂or HCI gave 2,4,4-trimethyI-3H-5-hydro-1,5-benzodiazepine 23. Using acetone 19 instead of acetonedicarboxylic acid 18, the reaction of o-phenylenediamine 5 in the presence of PPA or SiO₂or acrylic acid 11 was synthesized 2,4,4-trimethyI-3H-5-hydro-1,5-benzodiazepine 23 as same product. And also the reaction of o-phenylenediamine 5 with acetone 19 and acrylic 11 in the presence of PPA or SiO₂was obtained 2,4,4-trimethyI-3H-5-hydro-1,5-benzodiazepine 23. In case of acetophenone 21 in stead of acceton 19, the reaction of o-phenylenediamine 5 in presence of PPA or SiO₂at 40~45℃ were obtained 2,4-diphenyI-4methyI-3H-5-hydro-1,5-benzodiazepine 24. The reaction of o-phenylenediamine 5 with crotonic acid 25 in the presence of PPA or P₂O5+H₃PO₄or SiO₂at 100~110℃ afforded respectively 4-methybenzodiazepinone 26 as 1:1 cycloadduct.

      • Hofmann 전이 반응을 이용한 N-(L-Aspartyl)-1,1-Diaminoethane의 합성

        정대일,이용균,정일수,김윤영,김선영,박민수 東亞大學校 1998 東亞論叢 Vol.35 No.-

        Some retroisomeric peptide showed an agonistic or antagonistic effect of the parent peptides. So the studies on their synthesis and their structure-activity relationship are currently being investigated. In general, the synthesis of the retroisomeric peptide required N,N'-diacylated gem-diamino compound as an important synthetic intermediate, in which those diacylated group could be removed selectively in different condition. In connection with the development of facile synthetic method for retroisomeric peptide, we tried the synthesis of N-benzoyl-1. l-diaminoethane, intermediate of 1, 1-diaminoethane based Sweetener, from N-benzoyl alanine aimde 28 using improved Hofmann rearrangement as a key step. In this procedure, the N-benzoyl-N'-Cbz-1,1-diaminoethane 29 could be prepared in high yield without any bypreducts. And also this compound was converted to N-benzoyl-1, 1-diaminoethane 30 by hydrogenolysis successfully. From the above result, this method thought to be very convenient synthetic method for these N-acyl-l, l-diamino typed compounds, a intermediate of retroisomeric peptides. And also β-benzyl aspartate, another intermediate of these sweetener, could be prepared from aspartic acid via dibenzylation and selective hydrolysis.

      • 사상규칙과 소함수를 이용한 간호정보시스템의 스키마 사상 모듈의 설계 및 구현

        김대희,전종훈 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-

        Data interchange module for data sharing in a distributed database system envirionment is indispensible. Especially, inconsistency problem incurred by heterogeneous schema and database management system are known to be the most difficult one. This paper proposes a schema mapping method for data interchange between nursing information system and hospital information system. The method is based on the use of rule map and mini functions and the former is for providing schema mapping information and the latter is tailored for each individual database management system. The rule map and mini function resolves mismatch problem, which in turn makes it possible to implement effective data interchange module.

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