• International Journal of Automotive Technology
• /
• v.6 no.4
• /
• pp.367-374
• /
• 2005

This paper proposes a sound quality index to evaluate the vehicle interior noise. The index was developed using a correlation analysis of an objective measurement and a subjective evaluation data. First, the objective set of measurements was obtained at two specified driving conditions. One is from a wide-open test condition and the other is from a constant-speed test condition. At the same time, subjective evaluation was carried out using a score of ten scale where 17 test engineers participated in the experiment. The correlation analysis between the psycho-acoustic parameters derived from the objective measurement and the subjective evaluation was performed. The most critical factors at both test conditions were determined, and the corresponding equations for the sound quality were obtained from the multiple factor regression method. Finally, a comparative work between previous index and present index was performed to validate the effectiveness of the proposed index.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
• /
• 2005.05a
• /
• pp.595-598
• /
• 2005

The impact sound of the golf club is one of the major factors to purchase it. Sound qualify evaluation techniques are mostly developed for harmonic sounds. Sound quality metrics for the impact sound is proposed in this study. Jury test, one of the typical subjective evaluation scheme, is carried out for evaluating the sound quality of 11 different golf drivers. Above subjective classification results are assumed to be the right answers. Conventional objective evaluation methods such as Zwicker loudness sensory pleasantness are calculated. Wavelet analysis and instantaneous loudness are applied in order to evaluate the transient sounds, which shows better correlation with the results from those by jury test.

• The Journal of Internal Korean Medicine
• /
• v.32 no.3
• /
• pp.411-424
• /
• 2011

Objectives : This study was performed to investigate the antifatigue effect of SM-2000 on fatigued and stressed people. Methods : This study was carried out on 23 healthy people who have fatigue and stress. 11 people as the mentally-stressed group were examined by subjective symptoms of fatigue and blood cortisol test. They drank SM-2000 for seven days. SM-2000 was made up herbs which were used for fatigue. After that they were again examined by subjective symptoms of fatigue and blood cortisol test. 12 people as the physically-fatigued group were examined with fatigue biomarkers and exercise test. They also drank SM-2000 for seven days. After that they were again examined with fatigue biomarkers and exercise test. Results : Cortisol level, subjective symptoms of fatigue scores and physical, mental, and neuro-sensory symptoms of fatigue scores after drinking SM-2000 were not significantly increased compared with before drinking SM-2000 in the mental stressed group. SM-2000 significantly decreased lactate, glucose, and phosphorous levels, and running time after drinking SM-2000 was significantly suppressed compared with before drinking SM-2000 in the physically-fatigued group. Conclusions : On the basis of these results, SM-2000 had a clinical antifatigue effect in physically-fatigued people.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
• /
• v.23 no.3
• /
• pp.188-193
• /
• 2011

For a long time work or study, pendent task lighting system prepared with phosphor luminescent film LED was developed for eye protection and working efficiency improvement. Developed lighting system was used together with pendent and ambient lighting. Such as, we made comfortable lighting environment system. Evaluation for developed lighting system, that had proceeded to Mock-up test and subjective evaluation. Also It had proceeded that lighting environment analyzed and compatibility valuation of installation. In subjective evaluation, the students have expressed themselves satisfied to phosphor luminescent film LED lighting system. In Mock-up test, It is not problem to intensity of illumination, luminance and color temperature. Therefore, developed LED lighting system was installed at the Daegu apartment. It is having a P.O.E study progress to phosphor luminescent film LED lighting system.

• Journal of Preventive Medicine and Public Health
• /
• v.27 no.3 s.47
• /
• pp.557-567
• /
• 1994

This study was conducted to examine the effect of chronic low dose organic solvent exposures in the industries towards then neurobehavioral functions of workers. Subjective symptoms on neurobehavioral function as well as a visual reaction time test (Flicker test) were administered to 94 exposed and 162 unexposed workers in a oil refinery and some other auto-repair shops. The results obtained were as follows : 1. Symptom complaints were higher and Flicker test values were lower in exposed workers than in unexposed workers. 2. Flicker valus were Inversely correlated with urinary Hippuric acid concentration in exposed workers(r=-0.26, p<0.05). 3. Flicker valus were inversely co..elated with Subjective symptom score(r=-0.15, p<0.05). Low Flicker value were also related with some subjetive symptoms such as 'Dimmed vision', 'Nightmare', 'Weakness on extrimity' in workers as a whole. While symptoms of 'Dimmed vision ', 'Nightmare' only observed among exposed workers.

• Journal of Convergence for Information Technology
• /
• v.7 no.4
• /
• pp.185-194
• /
• 2017

The purpose of this study was to evaluate the association between industrial workers' job stress and oral health related quality of life and subjective happiness. The subjects of this study were 228 workers, from August 8 to September 2, 2016, research tool was the structured, anonymous, self-administrated questionnaire. The data were analyzed by SPSSWIN 18.0, t-test and one way ANOVA, Scheffe' post hoc test, Pearson correlation and Hierarchial multiple regression. Negative correlation was found between job stress and OHIP-14 and between job stress and subjective happiness and positive correlation was found between OHIP-14 and subjective happiness. As for the explanatory power of the independent variables affecting subjective happiness, gender, self-reported living status, self-reported general health, dental checkups, and job stress were significant variables. It is therefore necessary to run an industrial oral intervention program on a regular basis and cope positively with stress with the objective of helping workers improve their subjective happiness.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.24 no.8
• /
• pp.1254-1265
• /
• 2000

The purpose of this study was to examine the differences in clothing purchase behaviors among groups determined by subjective and chronological ages. The subjects of this study were teens and adults of up to 59 years of age residing in Seoul and the Metropolitan areas. Out of 700, 578 were used for final data analysis, Chi-square analysis, ANOVA, Duncans multiple range test and descriptive statistics were used for statistics analysis. The following results were found: the subjects were divided into 3 groups based on the subjective age. All age groups tended to perceive subjective age similar to chronological one. Regarding evaluative criteria for selecting clothes and stores, significant differences were found among all chronological and subjective age groups. By chronological age levels, significant differences were found among subjective age groups except the teens in the evaluative criteria used for purchasing clothing. Significant differences were found among subjective age group in all chronological age brackets in store selection criteria.

• Korean Journal of Child Studies
• /
• v.29 no.4
• /
• pp.167-179
• /
• 2008

This study used Structural Equation Modeling(SEM) to test causal relationships among perceived social supports, self-control, and subjective well-being in a sample of 325 5th and 6th grade elementary school children. Correlations of observed variables showed statistically significant among perceived social support, self-control, and subjective well-being. The goodness-of-fit of the hypothetical structural model in the study, perceived social support having direct effects on self-control and subjective well-being, and self-control, retaining the influence of perceived social support, having effects on subjective well-being-showed fairly acceptable levels. The results revealed that perceived social supports increase children's subjective well-being, and these supports also increase children's self-control, which indirectly influences children's subjective well-being.

• Journal of Korean Public Health Nursing
• /
• v.31 no.1
• /
• pp.135-148
• /
• 2017

Purpose: This study was conducted to predict the effects of behavioral intention on pap screening tests in unmarried college women using a path model. Methods: The study subjects were 216 university students and data were collected through self-report questionnaires including knowledge, attitude, subjective norms, perceived behavioral control, behavioral intentions to take the Pap test, and health responsibility. Results: Knowledge regarding the Pap test was moderate. The factors of knowledge, attitude, and perceived behavioral control negatively influenced the behavioral intention of the Pap test. However, the factors of subjective norms and health responsibility positively influenced behavioral intention. Conclusion: Subjective norms are the most importance factor to increase the intentions of the Pap test among unmarried college women. It is also necessary to eliminate barriers to undergoing pap testing, as well as to provide nursing intervention to obtain correct knowledge and a positive attitude regarding the Pap screening test.

• Science of Emotion and Sensibility
• /
• v.11 no.1
• /
• pp.113-122
• /
• 2008

This study surveyed the physical properties of the domestic and foreign worsted fabrics which are used for men's garments. For this purpose, forty specimens which were divided into 1st fourteen specimens and 2nd twenty six ones were prepared and the physical property assessment by Blind field test was carried out by test committee. The subjective test items by Blind field test were chosen as handle(softness, flexibility), color(brightness, deepness), appearance(cleanness, natural lustre) and comparison priority.