• International journal of advanced smart convergence
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• v.12 no.3
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• pp.192-199
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• 2023

The purpose of this study was to investigate the structural relationship between eating habits, physical activity, and subjective health perception, which can affect the mental health status of adolescents, and to examine whether subjective health perception has a mediating effect in these relationships. In this study, raw data from the "17th 2021 Youth Health Behavior Online Survey" were used, and a total of 1,998 people were used for the analysis of Gangwon-do adolescents, except for data with missing values. For analysis, SPSS 25.0 and AMOS 25.0 programs were used to analyze descriptive statistics, t-test, and structural equation models(SEM). Physical activity was found to have a positive and significant effect on mental health status, and subjective health cognition showed the effect of physical activity mediating mental health status.

• Journal of Broadcast Engineering
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• v.20 no.2
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• pp.204-214
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• 2015

Depth map upsampling is an approach to increase the spatial resolution of depth maps obtained from a depth camera. Depth map quality is closely related to 3D perception of stereoscopic image, multi-view image and holography. In general, the performance of upsampled depth map is evaluated by PSNR (Peak Signal to Noise Ratio). On the other hand, time-consuming 3D subjective tests requiring human subjects are carried out for examining the 3D perception as well as visual fatigue for 3D contents. Therefore, if an objective metric is closely correlated with a subjective test, the latter can be replaced by the objective metric. For this, this paper proposes a best metric by investigating the relationship between diverse objective metrics and 3D subjective tests. Diverse reference and no-reference metrics are adopted to evaluate the performance of upsampled depth maps. The subjective test is performed based on DSCQS test. From the utilization and analysis of three kinds of correlations, we validated that SSIM and Edge-PSNR can replace the subjective test.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.8
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• pp.160-166
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• 2018

This study was conducted to analyze the Ego Integrity, Subjective Pain, Subjective Health, Subjective Happiness and Social Support level of Community Dwelling elderly, and to analyze the variables that impact their Ego Integrity. Methods: A total of 250 elderly aged 60 years or above visiting a Senior Welfare Center in j city and j group of Jeonbuk were selected as subjects of this study for collection and analysis of data. Data were collected from January 8 to February 26, 2008 from 250 community-dwelling elders in Korea and subjected to descriptive analysis, t-test, ANOVA, Pearson's Correlation Coefficient, and multiple regression analysis. Results: only economic strength was influenced by general characteristics. Additionally, Subjective Pain, Subjective Health, and Subjective Happiness and Social Support l were found to have a statistically positive correlation with Ego Integrity. Finally, the most influential variables on the elderly Ego Integrity were Social Support (${\beta}=.194$, p=.002), followed by Subjective Health (${\beta}=.149$, p=.040) and four variables explaining 10.8% of the elderly Ego Integrity. Conclusion: it is necessary to develop specific intervention programs to improve Social Support and Subjective Health among Community Dwelling elderly to make it possible to enable Ego Integrity.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.5
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• pp.475-481
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• 2021

This study was conducted to find out the degree of self-esteem, resilience, and subjective happiness of nursing college students and to establish strategies to improve their subjective happiness. The study subjects included 204 nursing students, and data was analyzed by frequency, percentage, t-test, and ANOVA analysis to determine self-esteem, resilience, and subjective happiness according to general characteristics. Pearson's correlation was used for correlation. Factors affecting subjective happiness were analyzed by multiple regression. Study results found that self-esteem and resilience had an effect on grade level and department satisfaction, and subjective happiness had an effect on department satisfaction. In addition, self-esteem was found to be correlated with resilience and subjective happiness, and resilience was found to be correlated with subjective happiness. As a result of multivariate regression analysis, grade and subject satisfaction were found to be important factors affecting the subjective happiness of nursing students. In conclusion, it is necessary to develop programs for each grade for the subjective happiness of nursing students, and it is necessary to make efforts to establish and apply strategies and plans for satisfaction with the department.

• Journal of Korean Academy of Nursing
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• v.29 no.2
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• pp.248-257
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• 1999

The purpose of this study was to identify basic data for the health fare of normal pregnant women. The number of subjects was 779 pregnant women who received prenatal care in two University hospitals. The data, which were collected from June to October, 1998. and used the questionnaire “Symptom Table on Fatigue Perception” designed by the Research Committee of the Industial Fatigue in Hygienic. Association of Japan Industry. The collected data were scored by use of means and standard deviations according to the subjective symptoms of fatigue and each item as an independent variable was analysed by t-test and ANOVA test. The results are as follows : 1) Degree of subjective fatigue showed as an average of 1.81. Fatigue as physical symptoms had the highest score with 2.09. followed by neuro-sensory symptoms, 1.69 and psychological symptoms had the lowest score 1.66. 2) With the respect to the general characteristics of the subjects. there were statiscally significant difference in experience of pregnancy(t＝-2.286, p＝.023). wanted pregnancy(t＝-2.935, p＝.004), parity(t＝-2.429, p＝.015), sleeping time(F＝3.478, p＝.031). and presence of other child(t＝2.347, p＝0.19).

• Proceedings of the ESK Conference
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• 1997.04a
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• pp.10-16
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• 1997

The ride comfort is one of the most important indices which decide the quality of automotive seats. A subjective evaluation is the general method for comfort evaluation of automotive seats. But the subjective evaluation assess the individual sensibility using questionnaire. Therefore, a need to develop methodologies to obtain objective measurements of the fatigue evaluation is evident. In an effort to monitor muscle activity during driving electromyography (EMG) was employed. In an experimental setting the subjective evaluation was conducted using questionnaire under the static conditions (8 subjects) and the fatigue was induced in muscles using EMG under the dynamic conditions (2 drivers). The resultant EMG signals were then sampled for three different muscles. In test involving 2 subjects of similar size and build, utilizing four different automotive seats, test results support the use of EMG to quantify muscular fatigue as a viable means of objective evaluation for the different automotive seats.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2008.04a
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• pp.714-720
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• 2008

This research presents a laboratory study about an subjective response of impulsive sound caused by leisure shooting. The sources are sampled from outdoor noise and their levels range from 40 to 75 dB at the interval of 5dB. The noise unit is based on A-weighted sound exposure level (ASEL; $L_{AE}$). To make equal ASEL of outdoor noise, finite impulse response (FIR) filter is applied to the originally sampled source to include the effect of distance attenuation. The evaluation method of the jury test adopted a Semantic Difference(SD) Method. In the result of the jury test for impulsive noise, the mean response rating expressed a linear relation and %HA(percent highly annoyed) displayed a exponential growth relation.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2008.04a
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• pp.9-12
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• 2008

There are many place of business in complex building, and recently claims of noise have increased in those buildings. It is most desirable reducing the noise problems to establish the noise criteria considering the noise source and the receiving place of business, which are derived from the dose-response of noise and results of the actual condition. The degree of response to the transmission noise could be changed with background noise level in the receiving stores. In this research, the subjective evaluation for three different background level in receiving place of business or rooms were investigated from subjective tests. The eight business sound source including aerobic music were used for the test.

• Journal of the Korean Society of Clothing and Textiles
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• v.25 no.8
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• pp.1475-1483
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• 2001

The purpose of this study was to determine the physiological responses and subjective sensation according to fiber content of socks. Six female students participated in the wear trial test which was conducted in controled environmental chamber with 26${\pm}$1$^{\circ}C$ and 60${\times}$3%. R.H.SAS program was used for statistical analysis. The results of this study were as follows. Mean skin temperature was significantly different among three different socks. AWNP socks had the highest mean skin temperature and instep temperature. Also relative humidity in the microclimate of socks as well as heart rate were influenced by fiber content of socks, However, test of subjective sensation such as thermal, humid, comfort sensation showed that there was no significant difference among three different socks thermal sensation during the exercise and recovery period.

• The Korean Journal of Health Service Management
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• v.11 no.4
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• pp.133-144
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• 2017

Objectives : The purpose of this study was to identify factors affecting the subjective happiness of adolescents in Busan using data from the "12th Online Survey on Youth Health Behaviors, 2016." It intended to provide basic information for the development of intervention programs that can improve the subjective happiness of the youth. Methods : Data on 3,979 adolescents residing in Busan were drawn and statistically examined using frequency analysis, a t-test, an ANOVA, and a multiple regression analysis. SPSS 24.0 was used for all analyses. Results : Subjective happiness showed statistically significant differences depending on the factors of health equity like emotional support, gender, school level, financial state, academic performance, type of residence, and parents' educational level, and on the factors of health status, like subjective health state, depression, sleep and stress. Conclusions : The results of this study suggest that a variety of intervention programs on health status factors need to be developed, and implemented to improve the subjective happiness of adolescents in Busan.