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Structure and Function of the Mating-type Locus in the Homothallic Ascomycete, Didymella zeae-maydis
윤성환,Olen C. Yoder,B. Gillian Turgeon 한국미생물학회 2013 The journal of microbiology Vol.51 No.6
Homothallic Didymella zeae-maydis undergoes sexual reproduction by selfing. Sequence analysis of the mating type (MAT) locus from this fungus revealed that MAT carries both MAT1-1-1 and MAT1-2-1 genes found in heterothallic Dothideomycetes, separated by ~1.0 kb of noncoding DNA. To understand the mechanistic basis of homothallism in D. zeae-maydis, each of the MAT genes was deleted and the effects on selfing and on ability to cross in a heterothallic manner were determined. The strain carrying an intact MAT1-1-1but defective MAT1-2-1 gene (MAT1-1-1;ΔMAT1-2-1) was self-sterile, however strains carrying an intact MAT1-2-1 but defective MAT1-1-1 gene (ΔMAT1-1-1;MAT1-2-1), when selfed, showed delayed production of a few ascospores. Attempts to cross the two MAT deletion strains yielded fewer ΔMAT1-1-1;MAT1-2-1 than MAT1-1-1;ΔMAT1-2-1 progeny and very few ascospores overall compared to WT selfs. This study demonstrates that, as in the other homothallic Dothideomycetes,both MAT genes are required for full fertility,but that, in contrast to other cases, the presence of a single MAT1-2-1 gene can induce homothallism, albeit inefficiently,in D. zeae-maydis.
중국 농촌지역에서의 택배서비스 품질이 서비스가치, 고객만족 및 고객충성도에 미치는 영향 -안휘성(安徽省) 장풍현(長豊縣)을 중심으로-
윤성환 한국동북아경제학회 2019 동북아경제연구 Vol.31 No.2
The main purpose of this study is to grasp a structural relationship among customer’s perceived delivery service quality, service value, customer satisfaction and customer loyalty of the customers on the rural chinese delivery market, of which the market size has been rapidly expanding. For this study, a survey is carried out the rural chinese consumers who had experienced delivery service, then the results are used for statistical analysis. The results obtained by actual analysis are as follow. First, among service quality factors, reliability, responsiveness and assurance have statistically a positive effect on service value. Secondly, among service quality, tangibility, reliability, responsiveness and assurance have statistically a positive influence on customer satisfaction. Thirdly, service value has statistically a positive effect on customer satisfaction. Finally, in mutual relationship of three kinds of relationship service value, customer satisfaction and customer loyalty, customer satisfaction has statistically a positive effect on customer loyalty. Based on the results, a few points from the relationship marketing view shall be suggested for the companies running business on the rural Chinese delivery service.
중국 인터넷 쇼핑몰 이용고객의 충성도와 불평행동과의 구조적 관계에 관한 연구
윤성환 한국외국어대학교 국제지역연구센터 2009 국제지역연구 Vol.13 No.3
본 연구의 주요 목적은 최근 시장규모가 급격히 확대되고 있는 중국 인터넷 쇼핑몰 시장에서의 이용고객의 고객충성도와 불평행동 간의 구조적 관계를 파악하는데 있다. 이를 위하여 인터넷 쇼핑몰을 이용해서 제품을 실제 구매해본 경험이 있는 중국 대학생을 대상으로 설문조사를 실시하여 이를 통계분석에 이용하였다. 실증분석 결과, 고객만족과 몰입(commitment)은 고객충성도에 통계적으로 유의한 정(+)의 영향을 미치는 것으로 나타났으며, 고객충성도는 사적불평행동에 통계적으로 유의한 정(+)의 영향을, 공적불평행동에 통계적으로 유의한 부(-)의 영향을 미치는 것으로 나타났다. 본 연구에서는 이러한 연구결과를 바탕으로 관계마케팅(relationship marketing) 측면에서 중국에서 인터넷 쇼핑몰을 운영하고 있는 기업들을 위한 몇 가지 시사점을 제공하였으며, 또한 연구의 한계점과 향후 연구방향을 제시하였다. The main purpose of this study is to grasp a structural relationship between customer loyalty and complaining behavior of the customers on the Chinese Internet shopping mall, of which the market size has been rapidly expanding. For this study, A survey is carried out Chinese University students who have experience of purchasing products via Internet shopping mall, then the results are used for statistical analysis. The results show that customer satisfaction and commitment have statistically a positive influence on customer loyalty, whereas customer loyalty gives statistically a positive effect on private complaining behavior but statistically a negative effect on public complaining behavior. Based on the results, a few points from the relationship marketing view as well as the limits and direction of further studies shall be suggested for the companies running business on the Chinese Internet shopping mall.
MLP 기법을 이용한 3차원 점성 충격파관 유동의 수치적 해석
윤성환,김종암,김규홍 한국산업응용수학회 2006 한국산업응용수학회 학술대회 논문집 Vol.1 No.1
본 연구에서는 2차원 유동에 대하여 정의된 점성 충격파관 문제를 3차원 문제로 확장하고, 수치해를 구해 봄으로써 물리적 특성을 살펴보았다. 또한 다차원 압축성 유동에서 정확성 향상 및 수치 진동의 효율적 제어를 목적으로 개발된 MLP 기법을 적용함으로써 새로이 개발된 수치 기법의 성능을 기존 기법과 비교해 보았다. 벽면의 영향이 거의 없는 영역에서는 2차원 유동에서와 유사한 결과를 얻을 수 있었으며, 보태어 3차원 점성 충격파관 유동에서만 발견되는 코너 유동의 형태도 관찰해 볼 수 있었다.
중국 소비재 수출 중소기업의 기업가적 지향성, 시장지향성이 기업역량과 수출성과에 미치는 영향
윤성환 한국무역통상학회 2020 무역통상학회지 Vol.20 No.5
The purpose of this study is to analyze the impact of entrepreneurial orientation and market orientation on technological capability, marketing capability and export performance of consumer-goods SMEs in China. Relationships among the study concepts are predicted based on existing literature and tested through the survey from 300 consumer-goods SMEs in China. The empirical findings are as follows: First, entrepreneurial orientation and market orientation respectively have a positive effect on technological capability and marketing capability. Second, technological capability has a positive effect on export performance, but market capability has not a positive effect on export performance. Finally, entrepreneurial orientation and market orientation all have a positive effect on export performance.
윤성환,김철 慶熙大學校 社會科學硏究院 2006 社會科學硏究 Vol.32 No.2
This study analyzes the influence of country image, product attributes, and brand personality on selecting the Chinese Refrigerators among Seoul`s MBA Students. The result of this study shows that all these factors greatly effect on the Chinese Refrigerators`s election. Our conclusion is that Chinese enterprises in Korean market need the development of brands with aunique personality in connection with acountry image. Brand personality adds brand identity to reliability and makes for a stronger brand image in the Korean markets. This will furnish the differentiation for guiding effective brand marketing, giving the company comparative advantages in Korean market. 本硏究以首爾(Seoul)的MBA學生爲對象, 實證分析了中國的國家形象、中國氷箱的功能屬性和品牌個性對於韓國消費者的中國氷箱選擇具有什마影響。結果表明, 韓國消費者考慮購買中國氷箱時, 除了國家形象、功能屬性以外還受到品牌個性因素的影響。本硏究指出了進入韓國的中國企業應開發與國家形象有關的、有個性的品牌産品, 卽品牌個性會提高品牌知名度, 增加企業信賴度, 從而成爲韓國市場上更受歡迎的品牌, 也將爲有效的品牌市場導向提供産品差別化, 這樣可以使中國企業在競爭中獲得優勢。