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A Study on the Differences in Hotel Experience
이민휘 관광품질시스템학회 1998 관광품질시스템연구 Vol.4 No.1
호텔 프로그램의 주요한 목적은 학생들이 이를 학습한 후에 취업을 준비하는데 있다. 호텔프로그램의 높은 수준을 성취하기 위하여 교수들의 자질과 효과적인 교과과정이 중요한 요소이다. 그런데 교수들간의 시각에 따라 기능을 강조하려고 하는 실무지향적인 교수들과 연구와 이론을 강조하려고 하는 이론 지향적인 교수들로 두 그룹이 나누어져 있다. 이들의 문헌연구를 통하여 관찰해 보면, 하나는 개념과 지식의 향상을 중시하고 있으며 다른 하나는 기능과 직업교육을 중시하고 있다는 것을 알 수 있다. 그러므로 전체적인 교육과정을 향상시키기 위하여 이 두 그룹간의 생각을 통합하고 장점을 살려 전문성 개발에 더욱 효과적인 교육과정을 개발해야겠다.
홍지화,안종성,김용경,최경후,이민휘,박영준,김현태,이재훤 한국작물학회 2017 한국작물학회지 Vol.62 No.2
The mixing of rice and brown rice produced in different years is banned in Korea by the grain management act. However, there has been no reported method for discriminating the production year of rice. The objective of this study was to develop a method for discriminating the production year of rice and brown rice based on their phospholipids content. One hundred rice samples and 130 brown rice samples produced between 2012 and 2015 were collected. Twelve phosphatidylcholine components were analyzed by liquid chromatography-tandem mass spectrometry. Phosphatidylcholine was used as an internal standard to calculate the peak intensity of the samples. A statistical analysis of the results showed that the centroid distance between the stale and new rice was 4.16 and the classification ratio was 97%. To verify the calculated discriminant, 61 and 40 rice samples were collected. The accuracy of discrimination was 82% by primary verification and 80% by secondary verification. The statistical analysis of brown rice showed that the centroid distance between the stale and new brown rice was 3.14 and the classification ratio was 96%. To verify the calculated discriminant, 10 samples of new rice and 30 samples of stale rice were collected and the accuracy of discrimination was 93%. The accuracy of discrimination for rice stored at room temperature was 57.9 –92.1% and that for rice stored at a low temperature was 86.8–94.7%, depending on the storage period. For brown rice, the detection accuracy was 94.7–100% at room temperature and 92.1–100% at a low temperature, depending on the storage period. The accuracy of discrimination for rice was affected by the storage temperature and time, while that for brown rice was more than 92% regardless of the storage conditions. These results suggest that the developed discriminant analysis method could be utilized to determine the production year of rice and brown rice.