• Korean Journal of Health Education and Promotion
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• v.13 no.1
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• pp.28-44
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• 1996

The purpose of this study is to examine the associated risk factors for adolescent cigarette smoking. In February 1995, a total of 1793 students from 17 general high schools in Seoul were assessed with a self-completing questionnaire pertaining current smoking status and school.family.peer environmental factors. The results are as follows; 1. The overall proportion of current smoker among students in the study was 17.3%; 27.7% in males and 6.6% in females. 2. There was significant association between smoking status and all school environmental factors (ranks at school, satisfaction at school, study hours after school, extracurricular activity) examined. 3. Siblings smoking in males and family structure in females were significantly associated with the smoking status of students. 4. Functional aspect of family environmental factors, such as APGAR score, parental supervision, attachment to father or to mother were related to smoking status of students. 5. Association with friends who smoke was significantly associated with smoking status of students. 6. In males, association with friends who smoke, ranks at school, siblings smoking were significant positive predictors and APGAR score, parental supervision, attchment to mother were significant negative predictors. In females, association with friends whosmoke, ranks at school, satisfaction at school were significant positive predictors and parental supervision, attchment to father were significant negative predictors. These findings suggest that strategies that influence smoking behavior need to be directed not only to the individual student but also to their peer group, family and school environment.

• Journal of computational fluids engineering
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• v.14 no.3
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• pp.115-122
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• 2009

Numerical methods are applied to simulate the smoke behavior in a ventilated tunnel using large eddy simulation (LES) which is incorporated in FDS (Fire Dynamics Simulator) with proper combustion and radiation model. In this study, present numerical results are compared with data obtained from experiments on pool fires in a ventilated tunnel. The model tunnel is $182m(L){\times}5.4m(W){\times}2.4m(H)$. Two fire scenarios with different ventilation rates are considered with two different fire strengths. The present results are analyzed with those from LES without combustion and radiation model and from RANS ($\kappa-\epsilon$) model as well. Temperature distributions caused by fire in tunnel are compared with each other. It is found that thermal stratification and smoke back-layer can be predicted by FDS and the temperature predictions by FDS show better results than LES without combustion and radiation model. The FDS solver, however, failed to predict correct flow pattern when the high ventilation rate is considered in tunnel because of the defects in the tunnel-inlet turbulence and the near-wall turbulence.

• Journal of the Korean Society of School Health
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• v.8 no.1
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• pp.133-142
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• 1995

The purpose of this study was to examine the effect of smoking prevention program on changing the knowledge and attitude about smoking behavior of elementary school students, In September 1993, as a pretest, a total of 1492 students from 4 elementary schools in Seoul were assessed with self-completing questionnaire pertaining to knowledge and attitude about smoking. Among them, 704 students from 2 schools were assigned to intervention group and 788 students from other 2 schools were assigned to control group. Smoking prevention program was implemented in intervention group for about six months. In September 1994, as a posttest, all students were reassessed with the same questionnaire. The overall experimental smoking rate of students in the study was 8.0%; 13.4% in males and 2.9% in females. The baseline smoking knowledge score of intervention group and control group was 12.3 and 12.0, respectively. There was no significant difference between the two groups. But each score collected after one year interval was 15.3 and 13.0, respectively, which were significantly different(p<0.01). The main items of attitude, such as 'future intention to smoke', were not significantly changed by the intervention. Important predictors of 'future intention to smoke' in males were past history of experimental smoking, paternal smoking and knowledge about smoking. In females, past history of experimental smoking and knowledge about smoking were important predictors.

• Journal of the Korean Society of Safety
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• v.37 no.4
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• pp.73-79
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• 2022

In this study, real fire tests were performed on representative combustibles of residential facilities to analyze the fire behavior and combustion characteristics in a small residential space. The considered combustibles were a sofa, a combination of a desk and a chair, and a combination of a mattress and an electric mat. A compartment space fire test was performed using the room corner test equipment prescribed in the KS F ISO 9705 specification. Three real fire tests were conducted by placing the combustible material inside a small compartment with insulation and finishing materials and by igniting the combustible material. Results showed that the peak heat release rate and peak smoke production rate occurred in the combination of the mattress and electric mat. Furthermore, from the result of the fire rate analysis, it was estimated that the fire risk of the mattress and electric mat combination was the highest, followed by the sofa and thedesk and chair combination.

• Health Policy and Management
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• v.30 no.2
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• pp.199-210
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• 2020

Background: Based on the importance of ceasing smoking programs to control the regional disparity of smoking behavior in Korea, this study aims to reveal the variation of smoke rate and determinants of it for 229 provinces. An evaluation of the relative efficiency of the cease smoking program under the consideration of regional characteristics was followed. Methods: The main sources of data are the Korean Statistical Information Service and a national survey on the expenditure of public health centers. Multivariate regression is performed to figure the determinants of regional variation of smoking rate. Based on the result of the regression model, clustering analysis was conducted to group 229 regions by their characteristics. Three clusters were generated. Using data envelopment analysis (DEA), relative efficiency scores are calculated. Results from the pooled model which put 229 provinces in one model to score relative efficiency were compared with the cluster-separated model of each cluster. Results: First, the maximum variation of the smoking rate was 16.9%p. Second, sex ration, the proportion of the elder, and high risk drinking alcohol behavior have a significant role in the regional variation of smoking. Third, the population and proportion of the elder are the main variables for clustering. Fourth, dissimilarity on the results of relative efficiency was found between the pooled model and cluster-separated model, especially for cluster 2. Conclusion: This study figured regional variation of smoking rate and its determinants on the regional level. Unconformity of the DEA results between different models implies the issues on regional features when the regional evaluation performed especially on the programs of public health centers.

• Journal of the Korea Computer Graphics Society
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• v.21 no.5
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• pp.21-27
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• 2015

In this paper, we presents visual effect(water, fire, smoke) simulation and interaction system for TV virtual studio. TV virtual studio seamlessly synthesizes CG background and a live performer standing on a TV green studio. Previous virtual studios focus on the registration of CG background and a performer in real world. In contrast to the previous systems, we can afford to make new types of TV scenes more easily by simulating interactive visual effects according to a performer. This requires the extraction of the performer motion to be transformed 3D vector field and simulate fluids by applying the vector field to Navier Stokes equation. To add realism to water VFX simulation and interaction, we also simulate the dynamic behavior of splashing fluids on the water surface. To provide real-time recording of TV programs, real-time VFX simulation and interaction is presented through a GPU programming. Experimental results show this system can be used practically for realizing water, fire, smoke VFX simulation and the dynamic behavior simulation of fish flocks inside ocean.

• Women's Health Nursing
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• v.28 no.3
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• pp.222-234
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• 2022

Purpose: This study investigated the changes in the health-related behaviors of adult women in Korea during the coronavirus disease 2019 (COVID-19) pandemic. Methods: Data from the eighth Korea National Health and Nutrition Examination Survey (2019-2020) were analyzed. The participants were 4,848 women aged 19 to 64 years in 2019 and 2020. Data analysis using the complex sampling design was performed using SPSS 20.1. Results: Positive changes during the pandemic compared to before the pandemic in Korean adult women were found for improved subjective oral health perceptions (odds ratio [OR], 1.77; p<.001), increased moderate-intensity exercise in work and leisure activities (OR, 1.75; p<.001 and OR; 1.29, p=.004), and a decrease in secondhand smoke exposure at the workplace and in public places (OR, 0.64; p=.004 and OR, 0.60; p<.001). However, the following negative health behavior changes were found: decreased frequency of walking 5 days a week (OR, 0.81; p=.011) and an increase in unhealthy daytime sleep durations (OR, 1.40; p=006). Conclusion: Compared to before the COVID-19 pandemic, Korean adult women perceived their subjective dental health more positively during the COVID-19 pandemic, decreased their exposure to secondhand smoke at work and in public places, decreased walking, and increased sleep duration during the week. Since this study only compared data between 1 year before and after the start of the pandemic, it is necessary to investigate a longer period of time in the future. A future study should attempt to identify the factors related to changes in health behaviors caused by the pandemic.

• Journal of Korean Academy of Nursing
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• v.29 no.4
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• pp.917-928
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• 1999

The purpose of this study was to explore the subjective opinions related to of smoking cessation behavior of smokers. The research period was from Nov. 1, 1998 to May. 7. 1999. The research method used was Q-methodology. The process of the research was as follows : 1. Collection of concourse The statement of self-reference was derived from face to face interviews with 15 adult smokers Statement were categorized by researcher according to semantics 2. Extraction of Q-sample 30 of the self reference statement from categories of the Q-population were selected. 3. Selection of P-sample 31 of smokers were selected by consideration of diversity in sociodemographic background. 4. Based on a 1 to 9 point scale, the selected university students were made to participate in Q-sorting. 5. Analysis of Q-type was obtained by use of the QUANAL program. The results of this study reavealed as follows : There are three type of smoking cessation behavior of Korean smokers. 1. The first type focused on one's own initiative to smoking cessation. 2. The second type focused on environmental factor related to smoking cessation. 3. The third type was habitual smoker. They adhere to smoke and are not ready to smoking cessation. It is suggested that the results of this study may contribute to the development strategies for the purpose of increasing the incidence of smoking cessation of smokers

• Journal of Korean Public Health Nursing
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• v.22 no.1
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• pp.18-26
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• 2008

Purpose: To assess the health status and health behavior characteristics of immigrant women married to Koreans. Method: A descriptive research design was employed. Fifty female marriage immigrants who were clients of the visiting health program at W public health center were recruited. After full consent, direct interview with a structured questionnaire and physical measurements were conducted by visiting health nurses. Descriptive statistics were utilized. Results: All of the subjects showed normal blood sugar. 25.7% of them exhibited extreme body weight condition of either obesity or low body weight by BMI. 36.4% had pre-hypertension stage and 15.9% had first stage of hypertension. Only two of the women had been diagnosed with hypertension and treated by a doctor. Almost all (95%) of them perceived their general health status as good or moderate. Most of them did not exercise, smoke or drink. Regarding dental care, no subject brushed before lunch. and only one did between meals. About 30$\sim$60% of subjects had undergone health screening. Conclusion: Health education is needed for immigrant women married to Koreans to enhance their health behavior, prevent life style disease and improve their health.

• The Korean Journal of Pain
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• v.27 no.2
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• pp.118-124
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• 2014

Background: The chronic pain can disturb physical, psychological, and social performances. Analgesic agents are widely used but some antidepressants (ADs) showed analgesia also. Bupropion is using for smoke cessation but it can change morphine withdrawal signs such as pain. This study tested the acute systemic effect of bupropion on formalin induced pain behavior in rats. Methods: Wistar male healthy rats were divided into 7 groups (control, sham, and 5 treated groups with 10, 30, 90, 120, and 200 mg/kg of bupropion, i.p.). The bupropion injected 3 hours prior to formalin induced pain behavior. Formalin (50 ${\mu}l$, 2.5%) was injected subcutaneously in dorsal region of right hindpaw in all animals. Nociceptive signs were observed continuously on-line and off-line each minute. Common pain scoring was used for pain assessment. Results: The analysis of data by one-way ANOVA showed that bupropion can reduce pain scores in the second phase but not in first phase. Bupropion decreased the licking/biting duration significantly in first and second phase of formalin test. Conclusions: The results showed that bupropion has analgesic effects at systemic application. The change of second phase of the pain behavior was significant and it revealed that central mechanisms involve in bupropion analgesia.