표제지
목차
제1장 서론 8
1.1. 연구 배경 8
1.2. 연구 목적 및 내용 9
제2장 이론적 배경 11
2.1. 인체 진동 11
2.1.1. 인체 진동 좌표계 12
2.1.2. 인체 진동의 요인 14
2.2. 정신 물리학 법칙 17
2.3. 주관 평가법 19
2.4. 비모수 통계 21
2.4.1. The Wilcoxon Signed Ranks Test 22
2.4.2. The Friedman Two-Way Analysis of Variance by Ranks 23
2.4.3. The Mann-Whitney U Test 25
2.4.4. The Kruskal-Wallis One-Way Analysis of Variance by Ranks 26
2.5. 필터 29
제3장 수직축 가진 실험 30
3.1. 실험 대상 30
3.2. 실험 장비 32
3.3. 주관 평가 34
제4장 수직축 가진 실험 결과 38
4.1. 가진 신호 38
4.2. 등감각 곡선 40
4.3. 감각의 증가 43
4.4. 주파수 가중함수 49
제5장 결론 53
참고문헌 55
APPENDICES 60
Appendix A. Probabilities associated with the upper tail of the normal distribution 61
Appendix AII. Critical z values for #c multiple comparisons 62
Appendix AIII. Critical values q(α, #c) for #c dependent multiple comparisons 63
Appendix B. Critical values of the chi-square distribution 64
Appendix C. Critical values of T+ for the Wilcoxon signed ranks test(이미지참조) 65
Appendix D. Critical values for the Friedman two-way analysis of variance by ranks statistic, Fr(이미지참조) 68
Appendix E. Lower- and upper-tail probabilities for Wx the Mann-Whitney U rank-sum statistics(이미지참조) 69
Appendix F. Critical values for the Kruskal-Wallis one-way analysis of variance by ranks statistic, KW 77
Appendix G. Stevens' power law exponents for whole-body vibration 78
ABSTRACT 81
Table 2.1. Various exponents of Stevens' psychophysical law 18
Table 3.1. Characteristics of 27 subjects 31
Table 3.2. Characteristics of 10 average-weighted subjects 31
Table 3.3. Characteristics of 10 over-weighted subjects 31
Table 4.1. Mean and standard deviation of acceleration signals 38
Table 4.2. α and R² of average-weighted group 43
Table 4.3. α and R² of over-weighted group 43
Table 4.4. 'The Friedman Two-Way Analysis of Variance by Ranks' for... 44
Table 4.5. 'The Friedman Two-Way Analysis of Variance by Ranks' for... 45
Table 4.6. 'The Mann-Whitney U Test' between average-weighted and... 48
Fig. 1.1. Procedure for evaluating ride values 10
Fig. 2.1. Basicentric axes of human body in ISO 2631-1 12
Fig. 2.2. Local coordinate systems for the hand in ISO 5349-1 13
Fig. 3.1. Power curves of the two-tailed test at α = 0.05 with... 31
Fig. 3.2. Vibration shaker for the experiment 32
Fig. 3.3. Apparent mass of force platform to find the... 33
Fig. 3.4. Flow diagram showing experimental... 36
Fig. 3.5. Seat posture of subjects for the experiment 37
Fig. 4.1. Acceleration signals of 27 subjects 39
Fig. 4.2. Reference and test signals at 16 ㎐ 39
Fig. 4.3. Equal sensation curves for average weighted... 41
Fig. 4.4. Equal sensation curves for over weighted group 42
Fig. 4.5. Equal sensation curves for 27 subjects 42
Fig. 4.6. Growth of sensation about average-weighted and... 46
Fig. 4.7. Equal sensation curves about 20 subjects 47
Fig. 4.8. Reciprocal curve about the reference level 50
Fig. 4.9. Reciprocal curves about under the reference level 50
Fig. 4.10. Reciprocal curves about over the reference level 51
Fig. 4.11. Frequency weighting function for the Oriental... 51
Fig. 4.12. Comparison between frequency weighting function... 52