• Environmental Engineering Research
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• 제16권3호
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• pp.175-183
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• 2011

The climate of the $21^{st}$ century is likely to be significantly different from that of the 20th century because of human-induced climate change. An extreme weather event is defined as a climate phenomenon that has not been observed for the past 30 years and that may have occurred by climate change and climate variability. The abnormal climate change can induce natural disasters such as floods, droughts, typhoons, heavy snow, etc. How will the frequency and intensity of extreme weather events be affected by the global warming change in the $21^{st}$ century? This could be a quite interesting matter of concern to the hydrologists who will forecast the extreme weather events for preventing future natural disasters. In this study, we establish the extreme indices and analyze the trend of extreme weather events using extreme indices estimated from the observed data of 66 stations controlled by the Korea Meteorological Administration (KMA) in Korea. These analyses showed that spatially coherent and statistically significant changes in the extreme events of temperature and rainfall have occurred. Under the global climate change, Korea, unlike in the past, is now being affected by extreme weather events such as heavy rain and abnormal temperatures in addition to changes in climate phenomena.

• 대한인간공학회지
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• 제22권1호
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• pp.81-94
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• 2003

The British railway safety research group has developed a risk assessment model for the railway infrastructure and major railway accidents. The major hazardous factors of the railway infrastructure were identified and classified in the model. The frequency rates of critical top events were predicted by the fault tree analysis method using failure data of the railway system components and ratings of railway maintenance experts, The consequences of critical top events were predicted by the event tree analysis method. They classified the Joss of accident due to railway system into personal. commercial and environmental damages. They also classified 110 hazardous event due to railway system into three categories. train accident. movement accident and non-movement accident. The risk assessment model of the British railway system has been designed to take full account of both the high frequency low consequence type events (events occurring routinely for which there is significant quantity of recorded data) and the low frequency high consequence events (events occurring rarely for which there is little recorded data). The results for each hazardous event were presented in terms of the frequency of occurrence (number of events/year) and the risk (number of equivalent fatalities per year).

• 한국학교ㆍ지역보건교육학회지
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• 제1권1호
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• pp.107-118
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• 2000

This study was designed to contribute to the right development of children's physical strength and growth by making a comparative analysis of 6 graders' physical strength with the help of the 6 events of physical strength tests according to sex and trying to work out some relationship between obese children and normal ones. With this in mind, the subjects were 400 elementary students, obese and normal, who reside in Seoul. The results were made by means of the average records and standard deviation test of 6-event physical strength tests per sex and group. The conclusions were as follows; 1. The normal children's average score was better than those of their counterparts, showing a significant difference in the 6-event of physical strength tests. 2. There was a little difference per sex. And there was a significant static interrelations in 4 events except a 100 m race and a standing broad jump when the subjects do well in the two afore-mentioned events. All the other groups minus female normal one show a low interrelations in such events as a 100 m race, a chin-up, and hanging down from the horizontal bar. 3. The obese group was inferior to the normal one regardless of sex. In terms of the physical interrelations, there was no difference among the three groups minus the female normal one.

• 보건교육건강증진학회지
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• 제31권1호
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• pp.27-43
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• 2014

Objectives: The purpose of this study was to evaluate depression of mothers with children in early childhood and to identify predictors by income level. Methods: The research was conducted with 1,761 data from the 3rd wave of the Panel Study of Korean Children(PSKC) data. Independent variables were socio-demographic data, self-esteem, normative life-events, non-normative life events, parenting stress, marital conflict, social support. Data were analyzed by t-test, ANOVA, hierarchical multiple regression analysis were conducted. Results: Significant factors of depression of female in low-income were non-normative life events, parenting stress, marital conflict. In middle class, significant factors were education, birth order of children, self-esteem, normative and non-normative life events, parenting stress, marital conflict, sociable support. At last, we found that marital conflict was the biggest factor for depression of female in low-income and parenting stress was the most powerful predictor in middle class. Conclusions: Mother's depression has a enormous impacts on development of children in early childhood. Therefore It is required to prevent depression in mothers and it is important to intervene at the early stage of depression. Results of this study showed a different pattern of predictors by income level. Therefore, Intervention and services for a mother's depression should change the direction depending on the level of income.

• 한방비만학회지
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• 제21권2호
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• pp.95-104
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• 2021

Objectives: The purpose of this study is to analyze the adverse events and safety of Mahuang used as anti-obesity treatment in Korean medicine. Methods: PubMed, EMBASE, Cochrane, KoreaMed, Oriental Medicine Advanced Searching Integrated System (OASIS) and SCIENCE-ON were used as searching for randomized controlled trials investigating the safety of Mahuang for treating obesity from January, 2000 to July, 2021. Results: Total 6 studies were included for analyzing. In most studies, heart rate was higher in experimental group than in placebo group with statistically significant difference. Both systolic and diastolic blood pressure had no significant differences between both groups, but systolic blood pressure got lower in experimental group. Most adverse events reported in experimental group were dry mouth, constipation, diarrhea, palpitation and insomnia, but serious adverse events were not reported. Conclusions: This study provides the evidence about the safety of Mahuang for treating obesity. However, increase of heart rate and minor adverse events could be occurred. Further study is needed to confirm the safety of Mahuang.

• 대한치과의사협회지
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• 제54권12호
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• pp.1024-1034
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• 2016

Purpose. The purpose of this study was to compare the type and frequency of prosthetic complications associated with attachment types for implant overdenture. Material and methods. In this retrospective study, 38 patients (mean age, 63.5 years) have been treated with implant overdentures from 2007 to 2014. Ten patients received a bar-clip attachment. Eleven patients had received a milled bar with Locator attachment. Seventeen patients had received a Locator attachment. The mean follow-up period was 36.9 months (range, 15-83 months). The type and frequency of prosthetic complications was recorded. The frequency was analyzed to determine the statistical difference among the 3 different attachments by using one-way ANOVA (${\alpha}=.05$) and Bonferroni post hoc method at a 5% level of significance. Results. The total number of prosthetic complications was higher in the bar-clip attachment (55 events) than in the milled bar with Locator attachment (39 events) and the Locator attachment (34 events). There were no statistically significant differences, and the most common prosthetic complication was the loss of retention. In the bar-clip attachment group, the average frequency of prosthetic complications was 3.0 events per prosthesis during the first year. In the milled bar with Locator attachment and Locator attachment groups, the average frequencies were 1.45 events and 2.35 events, respectively. Statistically significant differences were observed in the frequency of the complication. (p = .043) Conclusions. Compared to the bar-clip attachment, implant overdentures that use milled bars with the Locator attachment have a significantly lower incidence of prosthetic complications in the first year of follow-up after placement.

• 한국보건간호학회지
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• 제13권1호
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• pp.1-11
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• 1999

This study was performed to estimate stressful life events, self-esteem and perceived health status in the elderly persons and to compare degree of self-esteem and perceived health status according to experience of stressful life events and general characteristics. The data was collected from 179 elders in a rural community. Data collection was done from October 20 to December 6, 1997. A comparison of self-esteem and perceived health status by experience of stressful life events and general characteristics was summarized as follows : 1) Eighty three persons, $46.4\%$ of the surveyed, have experienced stressful life events, including disease(54 persons) and death of family member(l2 persons). 2) Thirty eight percents of the surveyed persons evaluated they are not healthy. The average score of perceived health status of the elderly was 2.88± .92 for the scale of 5, which represents the healthiest status. 3) There were significant differences on the self-esteem score in the elderly according to having a spouse or not(t=3.51. p=.00l), having family members living together or not(t=2.98. p=.003) and socioeconomic status(F=7.08. p=.00l). 4) There were significant differences on the perceived health status in the elderly according to experience of stressful life events(t=3.51. p=.00l), having family members living together or not(t=2.09, p= .038) and socioeconomic status(F=6.56, p=.002). 5) Positive correlation was observed between self-esteem and perceived health(r= .5037, p=.000). The above results imply that support of family and society should be reinforced to improve self-respect and health of aged persons, and that it is desirable to build up social and economic environment promoting health status through daily life.

• 한국임상약학회지
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• 제24권2호
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• pp.106-114
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• 2014

Purpose: Recent investigations suggest that the antiplatelet effect of clopidogrel may be decreased when this medication is taken together with certain proton pump inhibitors (PPIs). However, there has been no study conducted in Korea regarding the clinical effect of clopidogrel-PPI interaction. This study targeted patients who received stents to investigate the effect of the concomitant use of clopidogrel and PPIs on the occurrence of adverse cardiovascular events in Korean patients. Methods: The patients who received a stent insertion at the Yeouido St. Mary's Hospital between January 2010 and April 2011 were included. The patients were divided into two groups, clopidogrel and clopidogrel + PPI, and followed for 12 months after the date of stent insertion using prescription history and medical records. The recurrence rates of the cardiovascular events among the two patient groups were statistically analyzed. Results: There was no difference between the two groups in the basic characteristics of the 157 patients in the clopidogrel group and the 62 patients in the clopidogrel+PPI group. Simple logistic regression showed a significantly higher rate of re-hospitalization in the clopidogrel+PPI group (OR=1.893, 95% CI 1.040-3.445, p=0.037). However, the results of the multivariate logistic regression of the variables found to have statistical significance by crosstabulation showed no significant difference in the rate of adverse cardiovascular events or re-hospitalization between the two groups. Conclusions: There was no significant difference between the clopidogrel and clopidogrel+PPI group among new patients with cardiovascular stents with respect to the occurrence of revascularization procedures, stent thrombosis, or chest pain, or with respect to the re-hospitalization rate for all cardiovascular events.

• Asian Journal for Public Opinion Research
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• 제1권4호
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• pp.292-306
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• 2014

China's "two sessions," namely, the National People's Congress (NPC) and the Chinese People's Political Consultative Conference (CPPCC), has significant meaning to the political life of the nation. It collects opinions and advice from different groups of people annually. "Two sessions" 2013 was especially eye-catching, because new state leaders were elected at the meetings. Using CATI (Computer Assisted Telephone Interviewing) system, the Media and Public Opinion Center of Fudan University (FMORC) conducted surveys of China's "two sessions" every year from 2007 to 2013. In 2013, the influence of new media on public opinion has become increasingly significant. Microblog and WeChat have become two types of important media for Shanghai residents to express their opinions and take part in China's "two sessions." Based on the empirical findings, this paper examines Shanghai Residents' cognition, attitudes and expressions towards "two sessions" 2013 and analyzes how new media affect the public opinions on significant political events.

• 동의신경정신과학회지
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• 제11권1호
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• pp.47-57
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• 2000

This study was designed and performed to identify the effects of oriental medical therapy on hwabyung patients by investigating the life events as the cause of Hwabyung, recent stress perception which influences the clinical appearances and change of symptoms by means of objective scales. 1. Through life events rating scale, life events are reported as follows, in the order of majority. Health, discord within family, martial life, friendship and interest, religion etc. Hwabyung patients experienced negative stress much more than positive stress. 2. Through the GARS (Global Assessment of Recent Stress), there were some significant decreases of stress perception in stress4(stress of sickness or injury), stress7(stress of change or no change in routine) and stress8(overall global stress)(p<0.05, respectively), but there were no significant decreases in five items out of eight items. 3. There were significant decreases of all rated symptoms(feeling of chest oppressed, stuffy in the chest or epigastric mass, feeling of something pushing-up, flushing of body or face, abrupt impulsion of anger, resentment), which were checked weekly for 4 times (p<0.05, respectively). In this study the symptoms of hwabyung were improved regardless of stress perception. It means that hwabyung can be improved significantly with oriental medical therapy.