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홍다검ㆍ이희경ㆍ이정현(Da Geom HongㆍHee kyung LeeㆍJeong Hyun Lee) 한국인체미용예술학회 2016 한국인체미용예술학회지 Vol.17 No.1
Recently, nail industry trends have been shifting from polish nail to gel nail. Because of the popularity of gel nail, the criteria for customers to choose colors have significantly changed. Therefore, there has been a rising demand for a nail color which goes well with skin color, not with the color of clothes, makes the hand more beautiful. Unlike a face, hand skin color isn’t corrected through makeup. Therefore, it is more difficult to find a color which is well matched with the skin tone. In this sense, the accurate analysis and classification of hand skin color which is the first step in the selection of nail color are required. However, it’s still very hard to find studies on hand skin color. To figure out the characteristics of Koreans’ hand skin color by age, this study analyzed differences in hand skin color by age after measuring the tone of the back of the hand and conducting quantitative analysis against 300 women living in Busan, Ulsan and Gyeongnam. The results revealed statistically significant difference (p.001). As the respondents were younger, a bright skin tone was observed. According to analysis on the distribution by the rank, ‘20s’ was the highest with 46% among those with a bright skin tone within top 100 ranks. In top 300 ranks, in contrast, ‘50s’ was the highest with 46% while ‘20s (8%)’ was the lowest. In terms of a skin tone, there was a considerable difference between ‘20s’ and ‘50s.’ Even though no big difference was found between ‘30s’ and ‘40s,’ a skin tone was brighter in the latter.
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품질분임조(QC) 및 6시그마 제도의 공존 -K공사 사례-
이정현 ( Jeong Hyun Lee ) 한국생산성학회 2015 生産性論集 Vol.29 No.2
The purpose of this study is to examine how the two practices regarding product quality improvement, quality circle and 6 sigma, are operated in workplace level and how both practices affect each other. For the purpose, this study is based on the case study on the Korean K manufacturing public enterprise in which quality issue is at the heart of the business. Quality Circle(QC) is a well-known quality control practice to enhance product quality which was designed by American scholars conceptually and which had been developed in Japan practically. The practice in Korean manufacturing firms has a long history since it was introduced from Japan in the late 1960s and early 1970s. QC emphasizes voluntary participation of workplace blue-collar employees and symbolic compensation for the participation. Thus QC is a practice for workplace level. Different from the QC practice, 6 sigma practice has a short history which was created in late 1980s in America and had been introduced mid or late 1990s and had been enacted in the 2000s in Korean firms. The practice of 6 sigma is based on the CEO leadership and professional staffs in the position of quality control. Strong incentive system is another feature of 6 sigma. It is revealed that the relationship between the two practices seems conflictive interaction, even though both practice share the same goal to enhance quality level and the similarity to adopt statistical tools. The case of K public enterprise shows that it was easier for employees to understand the tenets and statistical contents of 6 sigma, thanks to QC. In terms of incentive system, both practice are competitive in that there are limited incentive resources to be distributed among employee groups in the firm. In terms of industrial relation, trade unions may favor quality circle than 6 sigma because union members participate into QC than 6 sigma. In terms of CEO leadership in the firm, 6 sigma may be more attractive practice because it is the latest management fad and it may provide social legitimacy to CEO. It is not clear that the experience of QC operation in the K public firm from 1977 help 6 sigma practice to be well-rooted in the firm. This study shows how it is difficult for the two quality practices to co-exist at the same time in a firm and how it is important to analyze the context around and to prepare carefully introduction of any quality-related practice when a similar practice is already operated.
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이정현(Lee Jeong Hyun) 한국영어학학회 2015 영어학연구 Vol.21 No.1
This paper attempts to investigate the language tendency of Korean English learners as regards the acquisition of stative progressive. The main motive of study lies in this discrepancy: Stative progressive has been considered a non grammatical expression with its aspectual properties although it is naturally used by English native speakers. This study explores the acquisition of stative progressive through three perspectives: Different groups of stative verb, aspectual coercion through time adverbials and three proficiency levels of Korean learners. The main findings of this study are as follows: (1) Korean English learners are more successful at marking progressive with action verb than stative verb. (2) They reveal different usage of stative progressive for different stative verb groups. (3) Aspectual operator such as time adverbial is an influential factor for usage of stative progressive. (4) Three different proficiency levels of Korean learners represent different perspective and usage of stative progressive. Different perspective of Korean and English for stative progressive and L1 transfer are supposed to be significant elements for these findings.
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이정현(Jeong-Hyun Lee),오민규(Min-Kyu Oh),최태진(Taejin Choi) 대한지질학회 2021 대한지질학회 학술대회 Vol.2021 No.10
태백산분지의 태백층군 최하부는 장산층, 면산층, 묘봉층으로 구성되며 남북방향으로 발달하는 백악기 동점단층을 기준으로 동쪽에는 면산층 및 묘봉층이, 서쪽에는 장산층 및 묘봉층이 발달한다고 알려져 왔다. 그 동안에는 층서적으로 대비되는 장산 및 면산층 위에 묘봉층이 정합적으로 놓인다고 알려져 왔다. 그러나, 정합적인 관계가 확인된 면산·묘봉층과는 달리 장산층과 묘봉층의 층서적 관계는 논란이 많았다. 따라서 이 연구에서는 상동, 동점, 석개재 일대에 분포하는 장산, 면산, 묘봉층의 층서적 관계를 야외조사, 박편 관찰, 쇄설성 저어콘 연령 측정을 통해 밝히고자 하였다. 상동 지역에서 묘봉층은 장산층 상위에 놓이며, 장산층과 묘봉층 사이의 경계가 퇴적 과정에 의해 만들어진 뚜렷한 경계면으로 나타난다. 이 경계면을 따라 하부의 조립질 석영 사암으로 이루어진 장산층이 상부의 쇄설성 티탄철석을 다량 함유한 조립질 사암 및 역암으로 이루어진 묘봉층으로 급격히 바뀐다. 이러한 상동 지역의 묘봉층 최하부의 퇴적암석학적 특징은 동점 및 석개재 지역에서 나타나는 면산층과 매우 유사하다. 또한, 장산-묘봉층 경계의 각각 50 cm 하부 및 상부에서 채취한 장산층과 묘봉층의 쇄설성 저어콘의 연대 분포는 기존에 장산층 및 면산층에서 보고된 것과 유사하여, 급격한 기원지의 변화를 보인다. 한편, 상동 지역의 묘봉층 최하부 및 동점, 석개재 지역의 면산층은 석영질 사암 역을 포함하고 있는데, 이들은 장산층의 암상과 유사한 특징을 보인다. 이러한 연구 결과에 따르면 상동 지역의 묘봉층 최하부가 동점 및 석개재 지역의 면산층에 대비되며, 면산층과 묘봉층은 장산층을 부정합적으로 덮는다. 이러한 해석을 반영하면 면산층과 묘봉층의 정의를 수정할 필요가 있기에 다음과 같이 재정의하기를 제안한다. 면산층은 쇄설성 티탄철석을 다량 함유한 조립질 사암 및 역암으로 정의하며, 이는 하부의 선캄브리아대 암석(율리층군, 홍제사화강암, 장산층)을 부정합적으로 덮는다. 면산층과 묘봉층의 경계는 기존 제안에 따라 입자 크기가 급격히 작아져 두꺼운 이질 또는 실트질 암석이 처음으로 나타나는 층준으로 정의한다. 이에 따르면 상동 지역의 묘봉층은 면산층 및 묘봉층으로 세분되며, 동점 지역의 면산층 역시 면산층 및 묘봉층으로 구분된다.
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정장제, 신생아 분변 및 병원에서 분리한 장구균의 병독성인자 비교
이정현(Jeong-Hyun Lee),황성우(Sung-Woo Hwang),강경란(Kyung-Ran Kang),김동희(Dong Hee Kim),김천규(Chun-Gyu Kim) 한국생물공학회 2013 KSBB Journal Vol.28 No.1
Three isolates, E. faecium P1, P2 and P3, from intestinal drugs of three phamaceutical companies, four clinical vancomycin resistant isolates, E. faecium V1, V2, V3 and E. faecalis V4, and three isolates, E. faecalis DW01, DW07 and DW14, from infant feces were tested for the presence of virulence genes, ace, agg, esp, efaA, gelE, sprE, vanA and vanB as well as fsrABC, regulatory genes of gelE and sprE, cylMBA, cytolysin activation genes and cpd, cob and ccf, pheromone genes by PCR and for their phenotype activities such as protease, biofilm formation, cell clumping and hemolysis. The genes encoding cell surface adherence proteins, ace, agg, esp and efaA, were predominantly amplified from the vancomycin resistant strain V4 and the fecal isolates DW01, DW07 and DW14. Both protease and biofilm formation activity were detected only from E. faecalis V4 from which the PCR products of gelE and spreE as well as fsrABC were amplified. The pheromone genes were amplified from the V4, DW01, DW07 and DW14 strains and these strains showed clumping activity. Biofilm formation was observed from the strains DW01, DW07 and DW14, all of which produced PCR products of pheromone, and V4 as well. Whole cytolysin regulator genes were amplified from DW01, DW07 and DW14 and β-hemolysis activity was detected from these strains. Any virulence genes or activities except the pheomone gene ccf were not detected from the pharmaceutical isolates, E. faecium P1, P2 and P3.
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