• Journal of muscle and joint health
• /
• v.10 no.1
• /
• pp.32-43
• /
• 2003

The purpose of this study was to identify the long-term effects of the self-help program for arthritis patients. The subjects were 126 patients who have participated in the 6-week self-help program from 1997 to 2000, agreed to participate in this study by telephone interview and responded the mailed questionnaires. The measurement tools of this study were all self-reported questionnaires such as Numerical Pain Rating Scale, the number of pain sites, Korean Health Assessment Questionnaire, Numerical Fatigue Rating Scale, CES-D depression scale, Self-efficacy scale, Social support scale. The repeated measure ANOVA revealed the significant differences among the pre post follow-up pain and fatigue. Whileas there were no significant differences the pre post follow-up pain site and physical functioning. And there were also no significant differences the pain, pain site, fatigue and physical functioning among three groups according to the duration of follow-up. These results suggested that the follow-up program after the self-help program was completed would be helpful for the physical wellbeing of arthritis patients.

• Child Health Nursing Research
• /
• v.26 no.3
• /
• pp.357-365
• /
• 2020

Purpose: The aim of this study was to investigate internet addiction among middle school students and to examine the mediating effects of social support in the relationships of self-efficacy and self-control with internet addiction. Methods: The participants in the study were 119 middle school students in J city. The measurements included a self-efficacy scale, a self-control scale, a social support scale, and the Internet Addiction Scale for Youth. Data were analyzed using the independent t-test or Mann-Whitney U test, one-way analysis of variance, the Scheffé test, Pearson correlation coefficients, and multiple-regression using SPSS version 22.0. Mediation effects were analyzed by the Sobel test and Baron and Kenny's hierarchical analysis technique. Results: Significant correlations were found among self-efficacy, self-control, and internet addiction. Social support had partial mediating effects in the relationship between self-efficacy and internet addiction, as well as in the relationship between self-control and internet addition. Conclusion: In order to prevent internet addiction, the promotion of interactions among peers, which is a component of social support, is particularly important. It is also necessary to promote face-to-face activities that can strengthen relationships. The findings suggest that intensifying social support may help reduce the level of internet addiction in middle school students.

• The Bulletin of The Korean Astronomical Society
• /
• v.42 no.2
• /
• pp.47.2-47.2
• /
• 2017

We investigate the environmental effects on galaxy spin using the sample of ~1100 galaxies from the first public data of MaNGA integral field unit survey. We determine the spin parameter ${\lambda}_{Re}$ of galaxies by analyzing the two-dimensional stellar kinematic measurements within the effective radius, and study its dependence on the large-scale (background mass density determined with 20 nearby galaxies) and small-scale (distance to and morphology of the nearest neighbor galaxy) environments. We first examine the mass dependence of galaxy spin, and find that the spin parameter decreases with stellar mass at log ($M_{\ast}/M_{\odot}$) > 10, consistent with previous studies. We then divide the galaxies into three subsamples using their stellar masses to minimize the mass effects on galaxy spin. The spin parameter of galaxies in each subsample does not change with the background density, but do change with the distance to and morphology of the nearest neighbor. The spin parameter increases when late-type neighbors are within the virial radius, and decreases when early-type neighbors are within the virial radius. These results suggest that the large-scale environments hardly affect the galaxy spin, but the effects of small-scale environments such as hydrodynamic galaxy-galaxy interactions are substantial.

• Computers and Concrete
• /
• v.25 no.3
• /
• pp.245-253
• /
• 2020

Vibrational analysis in microtubules is examined based on the nonlocal theory of elasticity. The complete analytical formulas for wave velocity are obtained and the results reveal that the small scale effects can reduce the frequency, especially for large longitudinal wave-vector and large circumferential wave number. It is seen that the small scale effects are more significant for smaller wave length. The methods and results may also support the design and application of nano devices such as micro sound generator etc. The effects of small scale parameters can increase vibrational frequencies of the protein microtubules and cannot be overlooked in the analysis of vibrating phenomena. The results for different modes with nonlocal effect are checked.

• Journal of Forest and Environmental Science
• /
• v.34 no.3
• /
• pp.246-248
• /
• 2018

Urban development and population have augmented the increase of impervious land-cover. This phenomenon has amplified the effects of climate change and increasing urban island effects due to increases in urban temperatures. Seoul, South Korea is one of the largest metropolitan cities in the world. While land uses in Seoul vary, land cover patterns have not changed much (under 2%) in the past 10 years, making the city a prime target for studying the effects of land cover types on the urban temperature. This research seeks to generalize the urban temperature of Seoul through a series of statistical tests using multi-temporal remote sensing data focusing on multiple scales and typologies of green space to determine its overall effectiveness in reducing the urban heat. The distribution of LST values was reduced as the size of urban forests increased. It means that changing temperature of large-scale green-spaces is less influenced because the broad distribution could be resulted in various external variables such as slope aspect, topographic height and density of planting areas, while small-scale urban forests are more affected from that. The large-scale green spaces contributed significantly to lowering urban temperature by showing a similar mean LST value. Both of concentration and dispersal of urban forests affected the reduction of urban temperature. Therefore, the findings of this research support that creating urban forests in an urban region could reduce urban temperature regardless of the scale.

• Structural Engineering and Mechanics
• /
• v.70 no.3
• /
• pp.269-277
• /
• 2019

Using the non-local elasticity theory, Timoshenko beam model is developed to study the non- local buckling of Triple-walled carbon nanotubes (TWCNTs) embedded in an elastic medium under axial compression. The chirality and small scale effects are considered. The effects of the surrounding elastic medium based on a Winkler model and van der Waals' (vdW) forces between the inner and middle, also between the middle and outer nanotubes are taken into account. Considering the small-scale effects, the governing equilibrium equations are derived and the critical buckling loads under axial compression are obtained. The results show that the critical buckling load can be overestimated by the local beam model if the small-scale effect is overlooked for long nanotubes. In addition, significant dependence of the critical buckling loads on the chirality of zigzag carbon nanotube is confirmed. Furthermore, in order to estimate the impact of elastic medium on the non-local critical buckling load of TWCNTs under axial compression, the use of these findings are important in mechanical design considerations, improve and reinforcement of devices that use carbon nanotubes.

• Journal of People, Plants, and Environment
• /
• v.22 no.3
• /
• pp.299-307
• /
• 2019

This study surveyed the general characteristics and forest use characteristics of forest visitors, the healing power of natural environments and Perceived Restorativeness Scale (PRS) to find out whether humans can feel the healing effects of natural environments. The target area of this study was the natural environments of Bunseong Mountain in Gimhae, Gyeongsangnam-do, Korea. A total of 50 questionnaires were analyzed. Female visitors and those aged between 40s to 60s accounted for 62% and over 70% respectively. All the surveyed respondents answered 'yes' to the question about the healing effects of Bunseong Mountain and natural environments, and 84% of them answered that they can get 'psychological and physical healing' in Bunseong Mountain. Many respondents chose oxygen, sunlight, and landscape as a healing factor. To the questions about the specific form or conditions of the natural environments that have the healing effects, those who answered 'forest' was the highest (72%), and they described thickness of forests, gentle slope and clean air as their conditions. The average score of the Perceived Restorativeness Scale (PRS) using a 7-point Likert scale was 5.14. The results of this study indicate that respondents perceive Bunseong Mountain as a restorative environment and think that they can enjoy the healing effects of Bunseong Mountain and natural environments.

• Advances in nano research
• /
• v.16 no.2
• /
• pp.187-200
• /
• 2024

This study focuses on wave propagation analysis in the curved nanobeam exposed to different thermal loadings based on the Nonlocal Strain Gradient Theory (NSGT). Mechanical properties of the constitutive materials are assumed to be temperature-dependent and functionally graded. For modeling, the governing equations are derived using Hamilton's principle. Using the proposed model, the effects of small-scale, geometrical, and thermo-mechanical parameters on the dynamic behavior of the curved nanobeam are studied. A small-scale parameter, Z, is taken into account that collectively represents the strain gradient and the nonlocal parameters. When Z<1 or Z>1, the phase velocity decreases/increases, and the stiffness-softening/hardening phenomenon occurs in the curved nanobeam. Accordingly, the phase velocity depends more on the strain gradient parameter rather than the nonlocal parameter. As the arc angle increases, more variations in the phase velocity emerge in small wavenumbers. Furthermore, an increase of ∆T causes a decrease in the phase velocity, mostly in the case of uniform temperature rise rather than heat conduction. For verification, the results are compared with those available for the straight nanobeam in the previous studies. It is believed that the findings will be helpful for different applications of curved nanostructures used in nano-devices.

• Journal of the Korea Convergence Society
• /
• v.7 no.6
• /
• pp.287-295
• /
• 2016

This study was conducted of students in their youth, who were having behavioral and emotional problems, anxiety, depression, and ADHD in their school. The participants took part in equestrian sports programs(equestrian program and apparatus program) twice a week, for 60 minutes each. To make progress in the study, mainly 4 scales are used as the standards of preliminary and post inspections : emotional and behavioral development scale, anxiety scale, depression scale, and ADHD scale. After conducting two-way ANOVA analysis, the conclusion was made as follows. The equestrian sports and horse riding exercise program which were used in this study did had an positive effect on emotional and behavioral scale, depression scale, anxiety scale, and ADHD scale. Moreover, it is determined that the equestrian sports had more positive effects than the equestrian sports which used apparatus. However, to precisely compare and contrast the effects of equestrian sports programs and apparatus programs, the follow-up studies need to limit the control group.

• The Journal of Korean Physical Therapy
• /
• v.31 no.1
• /
• pp.49-55
• /
• 2019

Purpose: This study examined the effects of taping therapy on the balance and gait of stroke patients. Methods: The subjects of this study were 30 stroke patients. The treatment groups were prescribed a combination of taping, therapy applied simultaneously to the ankle and the hip joint, and general physical therapy twice a day for 30 minutes each, five days per week for 4 weeks for a total of 40 times. The control group was treated with general physical therapy for 30 minutes, 5 times per week for 4 weeks, and total 40 times. All subjects were followed up on a Berg balance scale, timed up and go test, activity-specific balance confidence scale, and GaitRite. Results: The group that simultaneously received taping therapy to the ankle and hip joint showed more significant effects than the group treated with ankle joint taping only (p<0.05). Effects were noted in the Berg balance scale, timed up and go test, activity-specific balance confidence scale and gait ability test. Compared to the control group, the group treated at the ankle and hip joint showed significant effects after the experiment in the Berg balance scale, timed up and go test, activity-specific balance confidence scale, and gait ability test (p<0.05). Conclusion: Taping therapy applied to both the ankle and hip joints, and combined with general physical therapy appears to be effective in patients with chronic stroke who have an impaired balance and gait ability.