연령에 따른 한국인 손 피부색 차이 분석

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.

종합병원 사무직 여성의 직무 및 사회심리적 스트레스가 직무만족, 조직몰입, 이직의향에 미치는 영향

이정현 ( Jeong Hyun Lee ),조우현 ( Woo Hyun Cho ),장세진 ( Sei Jin Chang ),김영훈 ( Young Hoon Kim ) 한국병원경영학회 2012 병원경영학회지 Vol.17 No.1

This study tires to examine affects that job and socio-psychological stresses of female office workers influence job satisfaction, organization commitment, and leaving intentions. A complete data are collected by conducting a survey with 240 female office workers from 9 medical institutions regarded as almost general hospital in Seoul. It is analyzed that the relation between socio-psychological stress and job satisfaction, organization commitment, and leaving intentions by using t-test; analysis of variance; correlation analysis; principal component analysis; linear structural equation modeling; etc. The results of this study are summarized as following. First, as it was comprehended by specific characteristics of subjects that the female office workers` level of job and socio-psychological stress, job satisfaction, organizational commitment, and leaving intention, there were statistically significant distinctions from their age, marital status, presence of children, position in the organization, type of employment, and monthly average income. Second, this study regarded relationship between the female office workers` level of job and socio-psychological stresses, job satisfaction, organizational commitment, and leaving intention. Job and socio-psychological stresses were negatively correlated with job satisfaction and organizational commitment, but the stresses were positive with leaving intention. Third, after evaluating effect that 8 features related to the job stress could influence job stress, the most effective valuables were in order to unfairness in organizational structure, workplace culture, inadequate compensation, and relationship conflict. Fourth, when looking at the overall effects of the job and socio- psychological stresses on job satisfaction, organizational commitment, and leaving intention, work autonomy was the most influencing factor of work stress levels. The level of the job stress seemed to be a prevalent impact on the leaving intention and it showed the most negative relationship that path coefficient from leaving intention to organizational commitment and also from organizational commitment to job satisfaction. Based on these findings, it can be defined that the job and socio-psychological stresses strongly influence job satisfaction, organizational commitment, and leaving intention.

Fibroscan에서의 혈액검사를 이용한 간질환의 영상분석

이정현(Jeong-Hyun Lee),김동현(Dong-Hyun Kim),김창수(Changsoo Kim) 한국콘텐츠학회 2015 한국콘텐츠학회논문지 Vol.15 No.8

간 섬유화는 임상에서 흔히 접하는 질환으로, 간세포 염증 및 괴사가 수년간 지속 및 반복되는 질환으로 간경변이 진행된다. 따라서, 만성 간질환 환자에서 간경변 및 간세포암으로의 진행을 막음으로써 간경변의 합병증 및 간세포암에 의한 사망률 및 유병률을 감소시키는 것이 주요한 임상 과제라 할 수 있다. 이에 본 연구에서는 미만성 간질환 환자에게서 초음파 영상, 혈액검사, 간탄력도와의 상관관계를 수치화 하고자 하였다. 본 연구에서는 P사의 초음파 진단기 (IU-22)로 영상을 획득한 환자와 Fibrosccan을 시행 받은 141명을 대상으로 시행하였고, 혈액 검사는 초음파 영상과 간섬유 스캔을 시행한 시점의 검사 결과로 기초자료를 획득하였다. 각 자료에 대한 통계 분석은 집단 간 차이 검증을 위해 일원분산분석(One-way, ANOVA)을 시행하여 검증하였다. 탄성 초음파의 수치는 정상, 만성간질환, 간경변 순으로 증가하였다. 판독 결과에 따라 ALT, Albumin은 대상군 간 통계학적 차이를 보이지 않았으며, 나이, AST, ALP, Bilirubin, PLT, PT, kPa에서 초음파 판독 결과에 따라서 차이가 있고, 통계적으로 유의(p<0.05)하였다. 그리고 다른 연구에서 만성 간질환 탄성 초음파 수치값이 12.5kPa 이상이라고만 제시하였으나, 본 연구에서는 질환별 평균 kPa임계값을 제시하여, 정량적으로 진단이 가능하게 수치화를 하였다. 또한, 진단결과의 상관관계를 제시하여 질환별 만성 간질환 환자의 진단에 일차적인 도구로 사용될 수 있으리라 사료된다. The liver fibrosis is a disease we often see in clinical medicine, and the persistence and repeatition of inflammation and necrosis of liver cells continue for several years, and it is proceeded to cirrhosis. So decrease of death rate and prevalence rate by complications of cirrhosis and hepatocellular carcinoma is main task of clinical medicine by protection of chronic liver ailment patients from proceeding to cirrhosis and hepatocellular carcinoma. So this study tried to represent the ultrasonic image, blood test, the relationship with liver stiffness of diffuse liver ailment patients as numbers. This study was performed with patients from whom the image was taken by ultrasonic and 141 people who were treated by fibroscan, the basic data for blood test was obtained from the test results at the time when ultrasonic image and liver fibroscan was performed. The statistical analysis was performed by One-way analysis of variance(ANOVA) to verify difference between groups. The value of liver stiffness was increased in the order of normal, chronic liver disease and cirrhosis. As a results, ALT and Albumin have no statistical difference between object groups, and there are statistical differences in the results of ultrasonic decoding at age, AST, ALP, Bilirubin, PLT, PT, and kPa, and they are statistically meaningful(p<0.005). And the value of liver stiffness of chronic liver ailment was presented only as over 12.5kPa in other study, but it was represented as numbers for quantitative diagnosis by presenting average kPa threshold value according to disease in this study. And by presenting relationship of diagnosed results, it is considered that it could be used as first tool to diagnose chronic liver ailment patients according to their disease.

우리나라 제조업 생산성 향상을 위한 작업장혁신의 현황과 과제

이정현 ( Jeong Hyun Lee ) 한국생산성학회 2012 生産性論集 Vol.26 No.1

The purpose of this study is to examine the realities around workplace innovations and to find policy goals needed to raise firms` productivity, throughout examining the distribution of work organizations in the Korean manufacturing firms. Based on the classification method in the previous studies, work organizations in manufacturing firms are classified as one of three types(and seven types in detail), non-systemic, Taylorist(Tayloristic, hybrid Tayloristic, and work organizations with a low functional flexibility) and high- performance work organization(Lean, hybrid Lean, and discretionary learning work organization). Two hundred manufacturing firms hiring 100 or more employees in 2009 are the samples of the survey done in 2009. The results show that the portion of firms with a non-systemic work organizations is 16.5% of the sample firms and the portion of firms with high-performance work organizations is 19% of the total firms, while 64.5% of the samples are firms with Taylorist work organizations. It means that almost 2/3 of the Korean manufacturing firms belong to Taylorist work organizations and the level of work organizations in the Korean firms should be developed to high-performance work organizations. The European data equivalent to the realities in Korea imply that the portion of firms with Taylorist work organizations in Europe 15 countries is only 13.6%. The results show that the Korean manufacturing firms should move from non-systemic or Taylorist work organizations to high-performance work organizations and policy regarding workplace innovations should support fully the transformations of work organizations.

개인-직무 불일치가 종업원의 내재적 직무만족에 미치는 영향

이정현 ( Jeong-hyun Lee ),취칭칭 ( Qing-qing Qu ) 한국생산성학회 2019 生産性論集 Vol.33 No.4

The purpose of this study is to examine how the mismatch between person and job affects intrinsic job satisfaction and to investigate the mediating effects of the employees’ dis-satisfaction about pay level in the relationship between person-job mismatch and job satisfaction. To this end, this study investigated the relationship between job satisfaction and person-job mismatch which was divided into 4 divisions including over-education, under-education, over-skilled and under-skilled. Also it analyzed the mediating effects of the discrepancy between the expected amount of pay and the real amount of pay. The 19th (2016) and 20th (2017) data of the Korea Labor & Income Panel Survey (KLIPS) were used. The findings are as follows. First, regardless of whether the employee can receive the expected amount of pay, the over-education and the over-skilled showed negative effects on job satisfaction. On the other hand, there were positive relationship between under-education/under-skilled and job satisfaction. Second, the discrepancy in wage level plays a mediating role in the relationship between person-job mismatch and job satisfaction. Therefore, it is suggested that not only the mismatch between individuals and jobs should be considered in improving job satisfaction of employees, but also it is necessary for firms to consider re-assignment of job and job rotation based on job analysis and to monitor employees’ evaluation on whether they fit their jobs. There are some limitations in this paper. The first limitation is that the use of single-item measurement regarding education mismatch and skill mismatch may cause problems of reliability in measurement. Second, longitudinal analysis based panel data will be better than cross-sectional analysis in this paper. Third limitation is that some independent variables like firm size, industry, job characteristics, and so on were not controlled in the process of analysis. This paper implies that future study is needed to examine whether subjective perceptions held by employees regarding over/under education and over/under skilled are real or false perceptions and why about 10% of the samples think themselves who earn bigger wages than expected.

2000년대 한국 기업의 보수제도 변화: 2003~2007을 중심으로

이정현 ( Jeong Hyun Lee ),이준우 ( Jun Woo Lee ) 한국생산성학회 2012 生産性論集 Vol.26 No.2

This paper explores how compensation practices in Korean companies in 2000s had been changed, focusing on principles of base-pay, group-level performance-based plan, ESOP and stock-option, and wage increase. For the purpose, the WPS(Workplace Panel Survey) data by the KLI(Korean Labor Institute) in 2003, 2005 and 2007 were chosen and analyzed here. There was a general expectation that the importance of seniority in determining base-pay, compared to the importance of job in itself or job-holder`s ability, would have been decreased in 2000s. However, it seems that the data do not support the expectation. For the period, the portion of establishments running group level performance-based bonus plan and the portion of establishments which had ever distributed the bonus to their employees among the recent 3 years were decreased significantly. The portion of establishments providing the ESOP remained around 10% and the share of the ESOP also remained around 10%. Regarding wage level, the size of average wage increase for high school graduates of blue-collar at entry level is larger than that of wage increase for 4-year university graduates. Taken together, it seems that no significant changes in compensation practices occurred in the Korean establishments in 2000s. Still two thirds of the Korean establishments are based on the seniority-based wage scheme. The importance of pay-for-performance in Korea in 2000s is circumscribed considerably.

월동녹비작물 재배가 시설재배 고추의 생육과 수량에 미치는 영향

이정현(Jeong Hyun Lee),김길용(Kil-Young Kim),양승구(Seung-Koo Yang),서윤원(Youn-Won Seo),최경주(Kyung-Ju Choi),정병준(Byung-Joon Jung) 한국생물환경조절학회 2007 한국생물환경조절학회 학술발표논문집 Vol.16 No.2

한국 사회적기업의 시장 경쟁 구조 현황

이정현(Lee, Jeong-Hyun) 사회적기업연구원 2015 사회적기업연구 Vol.8 No.1

다중서버를 이용한 인증된 키교환 프로토콜

이정현(Jung-hyun Lee),김현정(Hyun-jeong Kim),이동훈(Dong hoon Lee) 한국정보보호학회 2003 정보보호학회논문지 Vol.13 No.1

제주도에 분포하는 제4기 단성화산체의 형태적 분류 및 분포 특성 연구

이정현(Jeong-Hyun Lee),윤성효(Sung-Hyo Yun) 한국암석학회 2012 암석학회지 Vol.21 No.4

우리나라에서 가장 큰 화산섬인 제주도에는 약 360여 개의 단성화산체가 분포되어 있다고 알려져 있으나, 본 연구를 통해 기존에 일려진 것보다 100여 개가 더 많은 총 455개의 단성화산체가 분포하고 있음을 확인하였다. 총 455개의 단성화산체를 형태학적으로 분석해 본 결과, 분석구가 373개로 전체의 82.0%를 차지하여 가장 높은 비율로 나타나며, 분석구 외에도 정상부가 뾰족한 형태이면서 용암으로 구성된 것이 9개(2.0%), 순상화산체가 27개(5.9%), 응회환이 17개(3.7%), 응회구가 3개(0.7%), 마르가 1개(0.2%), 용암돔이 25개(5.5%)가 분포하고 있다. 또한 이들 중 알오름의 형태로 나타나는 것이 15개가 있다. 단성화산체의 지역별 분포를 살펴보면 전체적으로 제주도의 서쪽에 비해 동쪽에 더 우세하게 분포하고 있음을 알 수 있다. 또한 강수량과 같은 풍화 요인에 의해 분석구의 형태가 영향을 받는다면, 강수량이 월등히 더 많은 남부 지역에 한 방향으로 터진 말발굽형 화구를 가진 분석구나 초승달형 분석구, 불규칙한 형태의 분석구 등이 더 많이 분포해야 할 것이다. 그러나 실제 제주도에서는 오히려 강수량이 더 적은 북부 지역에 이러한 분석구들이 더 많이 분포하는 것으로 나타나, 제주도의 남북 간의 기후적인 요소의 차이가 분석구의 형태나 분포에 크게 영향을 끼친 것은 아니라고 생각된다. 단성화산체 중 응회환, 응회구와 마르는 주로 제주화산섬의 지하 또는 해안가의 저지대에 위치하며, 분석구는 대부분이 해안에서 떨어진 섬의 내륙부에 위치한다. 이는 제주도 단성화산체를 형성한 화산활동이 물(지하수 또는 얕은 바닷물)과의 접촉 유무에 따라 수성화산활동(수증기마그마분화)을 하거나, 마그마성화산활동(스트롬볼리안분화 혹은 하와이안분화)을 한 것임을 알 수 있다. 또한 이들 단성화산체의 고도별 분포를 살펴보면 고도 300 m 이하의 해안저지대에 253개(55.6%), 고도 300~600 m의 중 산간지대에 110개(24.2%), 600 m 이상의 산악지대에 92개(20.2%)가 분포하고 있어 과반수 이상이 해안저지대에 분포하고 있음을 알 수 있다. 제주화산섬에 분포하는 단성화산체들은 응력장 안에서 생긴 단층이나 틈을 따라서 틈새 분출을 통해 선상으로 배열되어 나타나는 것과 이러한 틈새와는 무관하게 독립된 단일 화구를 통한 중심 분출을 통해 생성된 것이 함께 나타남을 알 수 있다. Jeju island is the biggest volcanic island in Korea and there are over 455 Quaternary monogenetic volcanoes, of which approximately 373 volcanoes(82.0%) are cinder cones. Other volcanic forms in the island include sharp-pointed lava cone without crater(9 volcanoes; 2.0%), shield volcanoes(27 volcanoes; 5.9%), tuff rings(17 volcanoes; 3.7%), tuff cones(3 volcanoes; 0.7%), a maar(1 volcano; 0.2%) and lava domes(25 volcanoes; 5.5%). The monogenetic volcanoes include 15 small nested cinder cones(aloreum). The monogenetic volcanoes are more abundant in the eastern part of the island than in the western part. If the main cause of the weathering such as precipitation affected the shape of the monogenetic volcanoes, more monogenetic volcanoes(BC, CC, DC, etc.) are supposed to be present in the southern part that have more precipitation than in the northern part. But the distribution of the monogenetic volcanoes shows no difference between the southern and the northern parts. So we suggest that the difference of the climatic conditions did not affect the distribution or the shape of cinder cones. Tuff rings, tuff cones and a maar are distributed beneath the island or in the low-altitude areas along the shore although cinder cones are distributed in the interior of the island. This means that the volcanic activity which formed the monogenetic volcanoes resulted from either phreatomagmatic eruption or magmatic (hawaiian or strombolian) eruptions depending on the reaction with water (underground water or shallow waters). The distribution of the monogenetic volcanoes according to the altitude shows that 253(55.6%) volcanoes occur in low-lying coastal areas at an altitude below 300 m, 110(24.2%) in a middle mountainous area at an altitude between 300~600 m and 92(20.2%) in a high mountainous area at an altitude above 600 m. So more than half of monogenetic volcanoes are distributed in low-lying coastal areas.