No abstract available.
Near Drowning*

No abstract available.

No abstract available.
Orthognathic Surgery

Objective: This study examined the mediating effects of experiential avoidance and interpersonal problems on the relationship between social anxiety and social networking service (SNS) addiction proneness. Methods: An online survey was conducted on 400 university students in their 20s across Republic of Korea. The scales used in the study were the Social Interaction Anxiety Scale (SIAS), Korean Acceptance-Action Questionnaire-II (K-AAQ-II), Short form of the Korean Inventory of Interpersonal Problems Circumplex Scale (KIIP-SC), and SNS addiction proneness scale for university students. For data analysis, structural equation modeling was conducted, and phantom variables were used to verify the significance of individual indirect effects of the multiple mediation model. Results: Social anxiety had no direct effect on SNS addiction proneness. Experiential avoidance and interpersonal problems completely mediate the relationship between social anxiety and SNS addiction proneness sequentially. Conclusion Our result suggests that experiential avoidance leads to interpersonal problems and SNS addiction proneness. In other words, it is important to alleviate experiential avoidance in treating or preventing interpersonal problems and SNS addiction proneness among university students with social anxiety.

No abstract available.
Extremities* ; Limb Salvage* ; Tibia*

Mammary carcinoma was induced in rats by itravenous injection of N-methy-N-Nitrosourea. Microangiography was perfromed to evaluate the microvascular alterations in mammary carcinoma after irradiation. The tumors were givena single dose of 1.400 rads using Co-60 telethrapy unit with field size of 4 x 4 cm at 40 cm SSD. The dose ratewas 147.5 rads per minute. Microangiography was performed prior to irradiation and at one, two, and four weeksfollowing irradiation. The results are as follows: 1. Before irradiation, mammary carcinoma in rats tended to formlobules and the basic vasculature consisted of peripheral vascular pattern with central penetrating vessels. Theperipheral vascular pattern was always richer than that of the center. Irregular and tortuous vessles stretchedfrom the periphery into the center of lobule. 2. One week following irradiation, an increase in the number ofsmaller, tortuous vessels and decreased intervasular distance were obseved in the central portion of each lobule.This finding seems to be due to an improved filling of some previously existing but unfilled vessels. This maylead to improved metabolic changes and reoxygenation. 3. Later's changes of microvasculature after irradiation aretortuosity, irregularity, narrowing, abrupt tapering, fragmentation, and extravasation. These findings progressedafter a lapse of time. 4. The results can be considered as the microangiographic demonstration of the fact that reoxygenation after irradiation is mainly due to dilatation of the collapsed tumor vessels.
Animals ; Dilatation ; Microvessels ; Radiation Effects ; Rats ; Silver Sulfadiazine

Objective: The purpose of this study was to examine the mediating effect of social capital on the relationship between Social Media use motives and subjective well-being. Methods: In the study, online self-reporting surveys were conducted with Social Media users in their 20s, and data from 445 participants were used for structural equation modeling. Results: The main findings of the study were as follows. First, the interpersonal motives for Social Media use had an indirect effect on subjective well-being by mediating offline bonding capital and online bonding capital. In addition, interpersonal motives had an indirect effect on subjective well-being by dual-mediating online and offline bonding capital. Second, the self-expression motive for Social Media use did not directly affect subjective well-being, but it indirectly affected subjective well-being by mediating offline bonding capital. Third, the information-seeking motive for Social Media use did not directly affect subjective well-being, but it indirectly affected subjective well-being by mediating offline bonding capital. Conclusion This study identified a specific mechanism for how motives for using Social Media affect subjective well-being. Furthermore, the results of this study suggest that the effect of Social Media use on subjective well-being may differ depending on the motive for Social Media use.

Objective: This study aimed to reveal the relationship between social capital, the happiness of others, and the happiness of Korean adults. Methods: Data from 4,890 participants (2,092 males [42.78%] and 2,798 females [57.22%]) aged 19 to 79 years were used. Data used in the analysis were provided by the Survey on Koreans’ Happiness and Quality of Life (2019) conducted by the Korea Institute for Health and Social Affairs. Results: First, age, education, marital status, and subjective economic level were found to be significantly related to individual happiness. Second, social capital, which including trust and social participation, was positively related to individual happiness. Third, the key result of this study was that the happiness of close people was positively associated with individual happiness. Fourth, belonging showed a significant moderating effect on the relationship between the happiness of others and individual happiness. Conclusion This study contributes by examining the relationship between the happiness of others and individual happiness after controlling for social capital and demographic variables and examining the moderating effect of social capital on the relationship between the happiness of self and others. These results are expected to help understand the factors that determine the happiness of Korean adults.

Objective: There is limited understanding of which specific factors relate to smartphone addiction in the elderly. The aim of this study was to examine the relationship between types of smartphone use, digital literacy, and smartphone addiction in the elderly. Methods: It used data from a survey on smartphone overdependence by the South Korea National Information Society Agency in 2019. Participants were 3,121 older people (1,627 males, 1,494 females; mean age=63.83 [standard deviation=2.88 years]). We conducted hierarchical multiple regression analysis. Results: The results of a hierarchical multiple regression analysis indicated that smartphone usage time was positively related to smartphone addiction. Entertainment-seeking and life service types of smartphone use, and digital literacy were positively associated with smartphone addiction. Conversely, smartphone use for information-seeking and communication-seeking was negatively related to smartphone addiction. Conclusion This study suggests that it is necessary to understand different types of smartphone uses in the elderly and to educate the elderly on digital literacy to prevent smartphone addiction. In future studies, it will be necessary to re-confirm the relationship between smartphone usage type, digital literacy, and smartphone addiction in the elderly (including participants in their 70s or older).