표제지
초록
ABSTRACT
목차
기호 설명 14
1장 서론 16
2장 이론적 배경 17
2.1. 아연도금 피막 특성 17
2.2. 뇌파의 특성 및 고속 푸리에 변환 분석 17
2.2.1. 국제 전극 배치법(International 10-20 system) 21
2.2.2. 고속 푸리에 변환(FFT, Fast Fourier Transform) 23
2.3. 집중도 및 Valence-Arousal 감정그래프 24
2.3.1. Valence-arousal 감정 분석 25
3장 실험방법 27
3.1. 데이터분석 방법 27
3.2. 모사환경 30
3.2.1. 모사환경의 구축 30
3.2.2. 모사환경실험 수행 32
3.2.3. 모사환경실험 분석 33
3.3. 산업현장 실증 33
3.3.1. 산업현장 실증 실험 구성 33
3.3.2. 산업현장 실증 실험 수행 34
3.3.3. 산업현장 실증 실험 분석 34
4장 결과 35
4.1. DEAP 데이터 셋 분석 결과 35
4.2. 모사실험 결과 41
4.3. 산업현장 실증 결과 47
5장 결론 57
참고문헌 58
Table 2.1. Characteristics of EEG signal 20
Table 3.1. Video list of DEAP 29
Figure 2.1. EEG signals consisting of delta(0-4Hz), theta(4-8Hz), alpha(8-12Hz), beta(12-30Hz) and gamma(30-50Hz) 19
Figure 2.2. International 10-20 system for measuring the electroencephalogram(EEG) signals 22
Figure 3.1. Introduction of DEAP(Database for Emotion Analysis Physiological Signals). (a) Brain mapping by analyzing EEG signals, (b) valence-arousal curves from DEAP 28
Figure 4.1. Design of python code of EEG data from DEAP 36
Figure 4.2. EEG signals and survey score from DEAP. (a) Video no.9 brain wave and survey score, (b) video no.23 brain wave and survey score 37
Figure 4.3. Valence-arousal curves from the EEG signals of 32 persons through 40 videos of DEAP stimulated the feeling of happy, angry, sad and peaceful 38
Figure 4.4. Valence-arousal curves of 15 males under the representative 4 videos stimulated the feeling of happy and angry 39
Figure 4.5. Valence-arousal curves of 17 females under the representative 4 videos stimulated the feeling of happy and angry 40
Figure 4.6. Standard deviation of worker process concentration with skilled and unskilled workers during the process of red spray coating 43
Figure 4.7. Standard deviation of worker process concentration with skilled and unskilled workers during the process of blue spray coating 44
Figure 4.8. Standard deviation of L*, a* b* with skilled and unskilled workers during the process of red spray coating 45
Figure 4.9. Standard deviation of L*, a* b* with skilled and unskilled workers during the process of blue spray coating 46
Figure 4.10. Standard deviation of worker process concentration with skilled and unskilled workers during the fabrication process of zinc spray coating 49
Figure 4.11. Standard deviation of hardness with skilled and unskilled workers during the fabrication process of zinc spray coating 50
Figure 4.12. Distribution of hardnesses of zinc-spray-coated metals by skilled worker 51
Figure 4.13. Distribution of hardnesses of zinc-spray-coated metals by unskilled worker 52
Figure 4.14. Cross sections of zinc-spray-coated metals by optical microscope. (a) Zinc-spray-coated metal from skilled worker, (b) zinc-spray-coated metal from unskilled worker 53
Figure 4.15. XRD analysis of zinc-spray-coated metals exposed 5wt% NaCl from skilled worker 54
Figure 4.16. XRD analysis of zinc-spray-coated metals exposed 5wt% NaCl from unskilled worker 55
Figure 4.17. SEM image of surface of zinc-spray-coated metals after exposing in 5wt% NaCl. (a) Surface of zinc-spray-coated metals from skilled workers, (b) surface of zinc-spray-coated metals from unskilled workers 56