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최형민,Yong Joong Kim 한국식공간학회 2017 식공간연구 Vol.12 No.3
Migrant workers are a minority population that often face a glass ceiling although they serve as an important labor force to small and medium-sized restaurants (SMR) in South Korea. This study aims to use organizational support theory to examine the relationships between perceived organizational support (POS), job satisfaction (JS) and turnover intention (TI) in the SMR industry context. This study also compares the relationships between migrant workers and native workers in order to explore the boundary condition of migrant workers. A mixed sampling technique (respondent-driven and voluntary sampling) let the study obtain 208 valid responses from migrants and native workers in SMRs in South Korea. The findings demonstrate that POS has a positive and significant impact on JS, and POS and JS negatively and significantly influence TI in the SMR industry setting. Furthermore, JS has a partial mediation effect in the linkage between POS and TI. The migrant and non-migrant samples show not only the significant relationships between POS, JS and TI but also the mediation effect of JS. Interestingly, there was a stronger relationship between POS and JS in migrant workers than in native workers. This study provides scholars and practitioners with a better understanding of the boundary conditions of migrant workers in the SMR industry.
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최형민 崇實大學校 生産技術硏究所 1995 論文集 Vol.25 No.2
In this study effects of steam-fixation were investigated on in-situpolymerization-crosslinking treatment of cotton with maleic acid and itaconic acid. This system has been previously developed as a formaldehyde-free durable press finishing agent for cotton. Steaming time, curing condition, and drying temperature were selected as experimental parameters. The selection of these parameters was based on previous study on maleic acid/itaconic acid treatment without steam-fixation treatment. Fourier transform infrared (FTIR) spectroscopic analysis was also used to semi-quantitatively measure degree of esterification crosslinking in the treated fabrics. By using different washing steps we were able to separate carbonyl bands in ester groups and free carboxylic acid groups. Results indicated that control of drying temperature was critical in obtaining an optimal balance between polymerization and crosslinking process. It was shown that drying at 110℃ and steaming for 1 minute produced the fabrics with enhanced performance properties.
최형민,장승진,장학영,강지윤,김원식 한국감성과학회 2009 춘계학술대회 Vol.2009 No.-
B-모드 초음파를 이용한 경동맥 내중막 두께(IMT intima-media thickness) 측정은 관상동맥 질환이나 허혈성 뇌질환 위험도의 독립적인 인자로 매우 중요하다. 본 연구에서는 NTSC(national television system committee) 방식으로 경동씩 초음파 동영상신호를 획득하여 프레임으로 나누어 각각의 IMT를 측정하였다. 각각의 측정값을 시간축으로 재구성하여 시간도메인에서 IMT 의 시변동성을 분석하였다. IMT 시변동성 분석을 통하여 상대적으로 부정맥피험자가 정상피험자에 비해 IMT 평균값이 작아 위험도가 낮다고 평가 될 수 있지만 시변동성 분석으로 IMT 평균값이 작아도 혈관의 기능적 특징이 부족하여 위험도가 높다는 것을 알 수 있었다. 경동맥의 형태적 특징과 기능적 특징을 반영하는 이 분석방법은 경동맥 내중막 두께측정의 신뢰성을 향상시키며 관련질환의 위험도와 중증도를 세분화 할 수 있는 새로운 방법이 될 수 있을 것이다.