• Structural Monitoring and Maintenance
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• v.6 no.3
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• pp.255-268
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• 2019

Civil infrastructures, such as bridges and tunnels are most important assets and their failure during service will have significant economic and social impact in any country. Behavior of a bridge can be evaluated only through actual monitoring/measurements of bridge members under the loads of interest. Theoretical analysis alone is not a good predictor of the ability of a bridge. In some cases, theoretical analyses can give less effect than actual since theoretical analyses do not consider the actual condition of the bridge, support conditions, level of corrosion and damage in members and connections etc. Hence actual measurements of bridge response should be considered in making decisions on structural integrity, especially in cases of high value bridges (large spans and major crossings). This paper describes in detail the experimental investigations carried out on an open web type steel railway bridge. Strain gages and displacement transducers were installed at critical locations and responses were measured during passage of locomotives. Stresses were evaluated and extrapolated to maximum design loading. The responses measured from the bridge were within the permissible limits. The methodology adopted shall be used for assessing the structural integrity of the bridge for the design loads.

• International Journal of Safety
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• v.4 no.2
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• pp.43-46
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• 2005

The construction workers might be at the risk of many occupational injuries and illnesses. To protect workers from various hazards, industrial health and hygiene systems were specified for the construction workers by law. It is important to know the actual health and safety(H&S) conditions by tasks and the characteristics of injuries and illnesses of construction workers. This study was designed to investigate the actual conditions of construction workers exposed to various harmful substances and work elements including evaluation of health status of each worker and general H&S system. Questionnaire was sent to 600 construction workers nationwide and totally 367 people responded to it having 61.67% of response rate. The common construction hazards were dust(29.6%), noise(19.3%), repetitive motions(12.0%), handling excessive heavy materials(11.2%) in order. The repetitive motions and handling heavy materials related to muscle disorders accounted for 23.2%. The accident and injury types were in order of overexertion, falling, overturning, dropping or flying, electric shock, collision, etc.

• Safety and Health at Work
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• v.12 no.1
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• pp.96-101
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• 2021

Background: Many studies have reported noticeable increases in the proportion of employees working either relatively short or relatively long hours. Such trends have been accompanied by an increasing concern regarding work hour mismatches defined as a discrepancy between actual and preferred work hours. The aim of this study was to investigate association between work hour mismatch and depression. Methods: Data regarding work hour mismatches for 47,551 adults were extracted from the 2017 Korean Working Conditions Survey. The World Health Organization-Five Well-Being Index was used to measure depression. Multiple logistic regression analyses were performed to examine the association between work hour mismatch and depression. Results: Men and women workers with work hour mismatch were more likely to have depression [underemployed males: odds ratio (OR) = 1.30, 95% confidence interval (CI) = 1.14-1.49, overemployed males: OR = 1.28, 95% CI = 1.18-1.40; underemployed females: OR = 1.37, 95% CI = 1.20-1.56, overemployed females: OR = 1.12, 95% CI = 1.02-1.23]. Underemployed workers, workers who worked more than 52 hours per week, and workers with a high income level, all had higher ORs for depression. The greater the discrepancy between actual and preferred work hours, the higher OR for depression among both underemployed and overemployed workers. Conclusions: A difference between actual and preferred work hours was associated with depression. Underemployed workers had a higher risk of depression than that of overemployed workers. As a work hour mismatch negatively affected workers' mental health, it is important to reduce work hours mismatches as well as shorten the absolute number of work hours.

• The Journal of Korean Academic Society of Nursing Education
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• v.3 no.2
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• pp.163-192
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• 1997

As the population over the age of 65 increases, the demand for nurses who care for this group also continues to grow. Well-prepared nurses who are knowledgeable and skilled for the elderly can be prepared through systematic gerontological nursing curricula. This study was carried out to identify the needs for gerontological nursing curricular contents. The subjects for this study were two participant groups the educators who teach gerontological nursing in three-year and four-year baccalaureate nursing programs, and the nurses who are working with the elderly in hospitals, community health centers, social welfare agencies, and community health practioner's posts. The major findings of the study are as follows : 1. The differences between actual contents and essential contents of the educators : Concerning the actual contents that is actually taught, the educators showed the highest scores on the demographics of older adults and the lowest scores on the cultural variations affecting health care. Regarding the essential contents, the educators showed the highest scores on the demographics and the lowest scores on the economics of aging. Aside from the demographics, all of the items were found to have significant differences between essential and actual contents. This implies that all the content areas except demographics should be emphasized. 2. The differences between actual knowledge and essential knowledge of the nurses : Concerning the nurses' actual knowledge, the nurses showed the highest scores on the common health problems and their treatment and the lowest scores on the politics of aging. Regarding the essential knowledge, nurses showed the highest scores on the chronic illness and common health problems and the lowest scores on their roles and functions. However, they thought all the items to be essential. All of the items were found to have significant differences between actual and essential knowledge. The nurses who studied gerontological nursing in their school years and after graduating had more knowledge. However, they felt more knowledge was needed. This implies that the nurses need more education in all content areas of gerontological nursing. 3. The differences between educators and nurses : Concerning the essential contents, the educators showed higher scores on the demographics and growth and development than the nurses. Whereas, the nurses showed higher scores on the cultural variations, long-term care, economics of aging, politics of aging, legal and ethical issues, and common health problems than the educators. 4. Activities of nursing care for the elderly : Most common activities were related to direct nursing care such as giving physical care, counseling/teaching clients, and assessing and planning care for the clients. Nurses thought that all the items were critical, but they showed relatively low scores on the following :'serve on multidisciplinary committee', 'preparing reports', 'evaluation of outcomes of care', 'determine policy for nursing service', 'set patient care standards', and 'participate in nursing research' The constraints in providing better nursing service were time constraints, administrative restraints, social restraints, and inadequate knowledge.

• Journal of Korean society of Dental Hygiene
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• v.10 no.2
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• pp.243-254
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• 2010

Objectives : The study examined the correlation the between smoking and the actual smoking condition, knowledge, attitude and practice on the dental health of korean soldiers. Methods: The data was collected from a questionnaire given to 301 soldiers at two separate units in Kangwon-DO. Results : Soldiers dependance on nicotine according to the smoking frequence showed positive correlation(p<0.001). The respondents who had bad breath and bleeding gum had smoked for a relative correlation with how long they had smoked. Among the content of the dental health care program that respondents wished to undergo, dental whitening was the most attractive topic(37.9%) and decayed teeth was the most important part in dental health care(25.2%). The correlation coefficient between the dependancy on nicotine the less effort they made to improve their dental health(p<.05). Conclusion : The study suggest that antismoking campaigns should be include in military dental health care programs. Furthermore, the development of dental health care programs considering the needs of each military unit is basic for practice on dental health care between Korean soldiers.

• Journal of the Korean Society of Safety
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• v.32 no.6
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• pp.116-124
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• 2017

The purpose of this study is to examine the effect of subjective overwork on health and the moderating effect of risk perception in the relationship between subjective overwork and health. The data used in this study are the fourth Korean Working Condition Survey (KWCS) conducted by Korea Occupational Safety and Health Agency (KOSHA) in 2014. The items related to actual working hours, subjective overwork, health, and risk perception were used. A total of 18,508 workers who are 1) waged workers, 2) work more than three days a week, 3) work more than 21 hours a week, 4) work longer than preferred work hours or work as longer as they desired were selected. Hierarchical regression analysis was performed to identify the effect of actual work hours, subjective overwork, prevalence of risk, lethalness of accident damage on health and to determine the moderating effects of prevalence of risk and lethalness of accident damage. As a result, actual work hours, subjective overwork, prevalence of risk, lethalness of accident damage had an effect on worker's health problems. Second, lethalness of accident damage had a moderating effect in the relationship between subjective overwork and health. These results suggest that organizations should manage worker's environmental factors and other threats that could increase the lethalness of accident damage.

• Journal of Korean society of Dental Hygiene
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• v.14 no.6
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• pp.895-902
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• 2014

Objectives: The purpose of the study was to investigate the actual oral health status and dental fear level in the elderly. Methods: Data were collected by questionnaire interview method from June 15, 2013 to December 14, 2013. The subjects were elderly over 65 years old in Jeonbuk province. The study instrument was structured questionnaire including general characteristics of the subjects(3 questions), oral health management status(16 questions), Dental Fear Survey(DFS, 9 questions). Cronbach alphas were 0.804 and 0.959 in the study. Higher score of oral health management status showed good oral health care and higher DFS showed higher level of dental fear. Data were analyzed by t-test, one way ANOVA, post-hoc Scheffe test, and Pearson correlation analysis. Higher dental fear was defined below 33.3%. Results: Women tended to have better oral health than male. Women brush their teeth more frequently than male. Most of the elderly answered that it was important to brush teeth for 3 minutes, to use dental floss and to have oral health education(p<0.05). Score of dental fear level was similar in men and women. Those who were above 69 years old tended to have dental fear. Poor oral health condition was closely related to dental fear. Conclusions: The oral care in the elderly showed considerable differences between the groups and affected the dental fear. It is important to implement the nationwide dental care for the elderly in the future.

• Korean Journal of Human Ecology
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• v.22 no.1
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• pp.57-74
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• 2013

The purpose of this study was to identify how age-identity is associated with the attitude toward the elderly and self-esteem of the aged. The subjects were 366 adults aged 60 and over. The statistics used for the data analysis were reliability test, frequency, percentage, mean, standard deviation, one way ANOVA, correlation and multiple regression. The results of this study were as follows; First, The majority of elderly acknowledged psychological ages as their actual ages. Secondly, The degrees of elderlys' age-identity was 2.12, and the levels of the attitude toward the elderly was 60.62. Also, The degrees of elderlys' self-esteem was 24.16. The surveyed data showed higher means than medians. Third, The age-identity of elderly was significant with respect to spouse, religion, career, living state, sex, age, gap of actual age, health state, economic state, education, monthly living expenses. And the attitude toward the elderly was stastically significant with respect age-identity, career, spouse, religion, living state, health state, education, monthly living expenses, economic state, gap of actual age, and age. Moreover, The elderlys' self-esteem level was significant with respect to spouse, age-identity, living state, religion, career, economic state, monthly living expenses, the attitude toward the elderly, health state, education, and age. Finally, The variables affecting the age-identity of elderly were health state, economic state, religion, age that explained about 34% of the total variance. And The attitude toward the elderly were age-identity, health state, gap of actual age that explained about 19% of the total variance. Also, The variables that affect elderlys' self-esteem were economic state, age-identity, the attitude toward the elderly, sex, monthly living expenses that explained about 33% of the total variance.

• Journal of Korean society of Dental Hygiene
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• v.8 no.3
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• pp.115-126
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• 2008

Purpose : The research which sees width for a wide gain and loss is about brush qualitative management of the child about dental hygiene of the child is investigated the brush qualitative actual condition. Methods : The data which is collected used SPSS(Statistical Package for the Social Science) WIN 11.5 programs and analyzed, a frequency and a percentage with analytical technique, in order to grasp the general quality of the investigation object person produced to examine is about the brush quality control actual condition of the children opinion t-test (verification) frequency analyses and $x^2$(Chi-square) verifications, executed. Result : The followings are the findings of this research. First, the children about the reason which wipes this 83.4% the thing protection dental caries answer back, followed in grade and considers the difference which was visible(p<0.001). Second, wipes whether to experience is educated answer back 83.0% was educated, followed in sex and considers the difference which was visible(p<0.05). Third, when 1 time is brush quality of the children doing, in grade and the time when becomes disturbance was, most between 2~3 minutes followed considers the difference which was visible(p<0.01). Fourth, when 1 time is brush quality of the children doing, in grade and the time when becomes disturbance was, most between 2~3 minutes followed considers the difference which was visible(p<0.01). Fifth, when 1 time is brush quality of the children doing, in grade and the time when becomes disturbance was, most between 2~3 minutes followed considers the difference which was visible(p<0.05, p<.001). Sixth, Use duration of the toothbrush the child of most was 3~6 months, according to grade and sex was visible the difference which considers. Conclusion : Are oral healthily of the children is the knowledge which relates with a brush quality and practical degree important. Therefore this there must be dental health education program development will be able to improve, means must reflect the dental health education at the time of.

• Korean Journal of Health Education and Promotion
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• v.25 no.1
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• pp.1-12
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• 2008

Objectives: The researchers investigated the relationship among fun seeking, self-efficacy, interest in physical activity and actual physical activities of male college students, in orders to provide valuable information to professionals in health promotion. Methods: The participants were 316 male college students whose ages ranged from 18 to 30(M=22.53, SD=2.09). The questionnaires and psychological tests used in this research included the following: sub-scale of Korean Version of BAS/BIS Scale, The General Self-Efficacy Scale, International Physical Activity Questionnaires, & sub-scale of The Intrinsic Motivation Inventory for physical activity. Results: Results indicated that male students who had moderate level of fun seeking were more likely to engage in physical activities than those who showed low or high level of fun seeking. And students with the strong self-efficacy were more likely to do physical activity than with the weak self-efficacy, especially high level of physical activity. Male students who had greater interest in physical activity were more likely to engage in physical activities than those who were not interested in physical activity. A regression analysis revealed that interest in physical activity accounted for the most variance; it accounted for around 14.5% variance of actual physical activity with self-efficacy. The interaction effect of self-efficacy and interest in physical activity was significant for actual physical activity. Conclusion: This study reiterates the roles of self-efficacy and the interest in physical activity on physical activity, and found that non-linear relation of fun seeking to physical activity. These results may provide useful information for health practitioners.