• 한국콘텐츠학회논문지
• /
• 제19권4호
• /
• pp.111-119
• /
• 2019

본 연구의 목적은 대학생의 부전공, 복수전공 만족도 결정요인을 탐색하는 것이다. 이를 위해 대학의 조교들과 F.G.I를 수행하여 설문지를 제작했다. 설문조사는 부전공, 복수전공을 이수하는 총 239명의 대학생들을 대상으로 진행했다. 자료분석은 통계 프로그램 (SPSS)를 사용했으며 요인분석, 신뢰도검정, 다중회귀분석을 실시하였다. 먼저 부전공, 복수전공 관련 설문문항에 요인분석을 실시하여 필요-성취, 수업차별, 수강신청차별이라는 3가지 주요 요인을 도출했다. 다음으로 주요 요인들의 영향을 확인하는 다중회귀분석 실시하였다. 분석 결과 주요 요인들이 유의미하게 나타났다. 영향의 정도는 필요성취, 수업차별, 수강신청차별 순으로 높게 나타났다. 결론에서는 부전공, 복수전공의 긍정적 기능과 가능성을 제안하였다.

• 한국정밀공학회지
• /
• 제17권7호
• /
• pp.98-105
• /
• 2000

In this study, we developed rotating machine vibration condition monitoring system based upon Windows NT and DSP Board. Developed system includes signal analysis module, trend monitoring and simple diagnosis using threshold value. Trend analysis and report generation are offered with database management tool which was developed in MS-ACCESS environment. Post-processor, based upon Matlab, is developed for vibration signal analysis and fault detection using statistical pattern recognition scheme based upon Bayes discrimination rule and neural networks. Concerning to Bayes discrimination rule, the developed system contains the linear discrimination rule with common covariance matrices and the quadratic discrimination rule under different covariance matrices. Also the system contains k-nearest neighbor method to directly estimate a posterior probability of each class. The result of case studies with the data acquired from Pyung-tak LNG pump and experimental setup show that the system developed in this research is very effective and useful.

• 사상체질의학회지
• /
• 제7권2호
• /
• pp.89-100
• /
• 1995

This study was conducted for the purpose of finding out an objective classification method for Sasang Constitutional medicine, which divides people into 4 groups of constitution and presents comprehensively physiology, pathology, diagnosis, therapy and recuperation regarding each constitution. Questionnaire of Sasang Constitution Classification(I) was administered to 328 inpatients at Kyung Hee Oriental Medicine Hospital. Data was collected during 10 months from June 1994 to Mar. 11, 1995. For the purposes of this study, the collected data was analyzed by crosstabs, variation analysis, and discrimination analysis. The analyzing program was SPSS PC+V4.0. For the purposes of this study, the collected data was analyzed by crosstabs, cariation analysis, and discrimination analysis. The analyzing program was SPSS PC+V4.0. The results were as follows : 1. There was significant differences of each group scales through variation analysis. The questions of each group had Sasang constitutional diagnostic discrimination abilities 2. The diagnostic discrimination abilities(Hit-ratio=56.10%) of the Questionnaire for Sasang Constitution Classification(I) were found to have over 20% improvement than the propotional chance criteria(33.3%), Especially, Hit-ratio for $So{\breve{u}}m$-In(63%) was higher than that of SoYang-In(55%) and $Ta{\breve{e}}um$-In(56.3%). 3. Through discrimination analysis on good questions of each group, the diagnostic discrimination abilities of the Questionnaire for Sasang Constitution Classification(I) was 57.93%. 4. This would be on the ground that the Questionnaire for Sasang Constitution Classification(I) could be used as a tool for Sasang constitution classification.

• 자원환경지질
• /
• 제36권3호
• /
• pp.201-212
• /
• 2003

한반도 남동부의 경상분지에 한국지질자원연구원의 지진관측망을 비롯한 관측소들이 급격히 증가함에 따라, 지진관측의 능력이 최근에 들어 크게 향상되었다. 그러나, 빈번한 중소규모의 화약발파에 의한 진동이 다수 관측되고 있다. 따라서, 이 지역에서 자연지진과 발파에 의한 인공지진의 식별이 중요한 문제로 부상하였다. 이 지역에서의 인공지진과 자연지진의 적절한 식별법을 확립하기 위하여 소규모의 지역지진 43개와 이에 대응되는 인공지진 43개를 선정하였다. 이 연구에서는 주파수 영역에서 Pg파, Sg파 및 Lg파의 스펙트럼 진폭비를 이용하는 기법들이 폭 넓게 검토되었다. 그들 중 Pg/Lg 스펙트럼 진폭비를 이용하는 방법이 가장 좋은 식별법으로 나타났다. 또한, 식별능력을 향상시키기 위하여 Pg/Lg 스펙트럼비에 다변량 판별분석법을 적용하였다. 거리보정이 안된 수직성분에 비하여 거리에 대한 감쇠효과를 보정한 3성분의 Pg/Lg비에 판별분석법을 적용했을 때의 판별능력은 뚜렷한 증가를 보인다. 주파수 대역 4-l4Hz의 범위에서, 거리 보정한 3성분의 Pg/Lg비에 대한 판별분석의 결과 총 분류비율은 0.89%에 불과한 것으로 나타난다.

• Bulletin of the Korean Chemical Society
• /
• 제28권4호
• /
• pp.557-560
• /
• 2007

The metabolic discrimination of safflowers from various geographical origins was performed using 1H nuclear magnetic resonance (NMR) spectroscopy followed by principal components analysis. With a combination of these techniques, safflower samples from different origins could be discriminated using the first two principal components (PC) of the 1H NMR spectra of the 50% methanol fractions. PC1 and PC2 accounted cumulatively for 91.3% of the variation in all variables. The major peaks in the 1H NMR spectra that contributed to the discrimination were assigned to fatty acid (terminal CH3), lactic acid, acetic acid, choline derivatives, glycine, and safflower yellow derivatives. In this study, we suggest that various types of safflower can be discriminated using PCA and 1H NMR spectra.

• Journal of Pharmaceutical Investigation
• /
• 제41권6호
• /
• pp.377-380
• /
• 2011

The Artemisia princeps (Compositae) has been used in traditional Korean medicine for the treatment of microbial infections and inflammatory diseases. Since A. princeps is generally difficult to be discriminated from A. capillaris, A. caplillaris has been misused in place of A. princeps. To solve this problem, a rapid and nondestructive method for discrimination of A. princeps and A. capillaris samples was developed using near infrared spectroscopy (NIRS) in the present study. A principal component analysis (PCA) and a partial least squares discrimination analysis (PLS-DA) were performed to discriminate two species. As a result, with the use of PLS-DA, A. princeps and A. capillaris were clustered according to their genus. These outcomes indicated that the NIRS could be useful for the discrimination between Artemisia princeps and Artemisia capillaris.

• Journal of information and communication convergence engineering
• /
• 제4권1호
• /
• pp.36-40
• /
• 2006

A new method of digital image analysis technique for medical images of cancer cell is presented. This paper deals with the cancer cell discrimination. The object images were the Thyroid Gland cell images that were diagnosed as normal and abnormal. This paper proposes a new discrimination method based on fuzzy logic algorithm. The focus of this paper is an automatic discrimination of cells into normal and abnormal of medical images by dominant feature parameters method with fuzzy algorithm. As a consequence of using fuzzy logic algorithm, the nucleus were successfully diagnosed as normal and abnormal. As for the experimental result, average recognition rate of 64.66% was obtained by applying single parameter of 16 feature parameters at a time. The discrimination rate of 93.08% was obtained by proposed method.

• 한국식품과학회지
• /
• 제44권5호
• /
• pp.503-525
• /
• 2012

Consumers are increasingly concerned about the origin of foods, so the geographical origin of foods has been a major topic of debate and extensive research. Various instrumental methods (e.g. high performance liquid chromatography (HPLC), gas chromatography (GC), capillary electrophoresis (CE), electronic nose, near-infrared spectroscopy (NIRS), nuclear magnetic resonance spectroscopy (NMR), DNA analysis, multi-isotope analysis) in conjunction with statistical analysis, were developed and applied in attempt to provide reliable answers to their geographical origin. This study reviews current developments in the application of various methods for a clear geographical origin of foods. The limitation of discrimination analysis for geographical origin was also discussed.

• 한국보건간호학회지
• /
• 제34권2호
• /
• pp.277-288
• /
• 2020

Objectives: This study examined the relationship between discrimination perception and occupational stress of school nurses to verify the mediating effects of self-esteem on the relationship between the perception of discrimination and occupational stress. Methods: This study was a secondary analysis of the data collected by the Public Health Nurses Association of D city from regular school nurses working in elementary, middle, and high schools in September 2017. The data were analyzed using the SPSS 25.0 Statistics Program, and multiple regression analysis was used to analyze the effects of self-esteem on the relationship between the perception of discrimination and occupational stress. Results: The occupational stress of school nurses was higher with higher discrimination and lower self-esteem, and the moderating effects of self-esteem (β=-.152, p=.016) was confirmed between the perception of discrimination and occupational stress (F=30.117, p<.001). Conclusions: Based on the results of this study, it is necessary to prepare a method for managing occupational stress due to job demands of school nurses as well as organizational measures to reduce discrimination in organizations. In addition, efforts to develop various programs focusing on improving the self-esteem of school nurses are required.

• 보건행정학회지
• /
• 제33권1호
• /
• pp.75-84
• /
• 2023

Background: The purpose of this study was to identify the factors affecting social discrimination experience on depression in the early and late elderly by region. Methods: This study used data from the National Survey of Older Koreans 2020. The subject of the study was the elderly aged 65 or older, and it was analyzed as those who responded. In order to analyze the effect of social discrimination experiences on depression, it was analyzed through binary logistic regression analysis. Results: The results of this study showed that the elderly who experienced social discrimination had a significant effect on depression. In addition, when four groups experienced social discrimination when using restaurants or coffee shops, depression was commonly affected. In addition, when both city and rural areas experience social discrimination when using sales facilities in social discrimination in the elderly, city areas are 2.21 times more likely to experience depression and 3.52 times more likely to experience depression in rural areas. The late elderly are more likely to experience 3.04 times more likely to experience social discrimination when using restaurants or coffee shops in city areas, and 3.03 times more likely to experience depression when experiencing social discrimination to make major decisions in the family in rural areas. Conclusion: In conclusion, it is necessary to prepare alternatives to prevent depression and improve mental health suitable for the characteristics of age and residential area. In addition, it suggests that personal and social efforts are needed to solve the problem of social discrimination in order to reduce depression in the elderly.