• Journal of Information Science Theory and Practice
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• v.10 no.4
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• pp.23-37
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• 2022

The pandemic of Coronavirus disease (COVID-19) has contributed more challenges for mothers as the family's primary caregiver in overcoming the widespread infection. Pandemic-related information is essential for mothers to reduce uncertainty as well as to maintain the health of family members during this unprecedented situation. Adopting the framework of the Situational Theory of Problem Solving, this study extends the theory by, first, testing the mediating role of COVID-19 anxiety on mothers' information seeking and information forwarding, referred to as active communication action of problem solving, as well as preventive behavior; and second, by predicting the effect of information seeking on preventive behavior. Referring to an online survey from 371 Indonesian mothers, the findings suggest that in terms of direct effect, only problem recognition was found to have no significant effect on situational motivation. The results suggest that Indonesian mothers perceive COVID-19 as personally relevant so that they are motivated to solve the problem by seeking and forwarding related information. In addition, COVID-19 anxiety was found to play a significant role in predicting information seeking, information forwarding, and preventive behavior. The result of this study is expected to give insights for risk communicators and health professionals in Indonesia in communicating COVID-19, particularly to mothers.

• Journal of Preventive Medicine and Public Health
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• v.21 no.1 s.23
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• pp.152-162
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• 1988

Benzene and toluene, which are widely used aromatic hydrocarbons in workplace, are recently proved to cause health hazards due to their toxic effects. This study investigated the influence of toluene on the urinary excretion of benzene metabolite by administering short term exposure limit(STEL) of these compounds(i.e., 13.8mg/kg of benzene and 108.8 mg/kg of toluene) intraperitoneally into Sprague-Dawley rats. After administration, urinary phenol concentration of rat was measured by gas chromatography for every three hours. Data were analyzed by non-parametric statistical methods using Kruskal-Wallis multi-sample test and Mann-Whitney U test. The following results were obtained : 1. Administration of STEL-benzene increased urinary phenol concentration in lats. 2. Urinary phenol concentration was increased logarithmically according to the dosage of benzene. 3. Excretion of phenol in urine was decreased when benzene and toluene were administered simultaneously compared with administering benzene alone. In summary, these results reveal that administration of STEL of toluene has antagonistic effect of urinary excretion of benzene metabolite in rats.

• Journal of Preventive Medicine and Public Health
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• v.36 no.2
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• pp.131-136
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• 2003

Objectives : The purpose of the present study was to explore a possible interaction effect of stress and social support on the smoking status and identify smoking related factors of high school students, Methods : A cross-sectional design was used for this study. A total of 1,251 high school students from Gyeonggi-do were selected using stratified-proportional random cluster sampling methods, The participants completed a set of questionnaires to measure their smoking status, stress, social support and sociodemographic information, The obtained data were analyzed using descriptive statistics, $x^2$-tests and hierarchical logistic regressions. Results : The interaction effect of stress and social support on smoking status was not supported. However, stress, sex, types of school, parent's smoking and friends' smoking were significantly predicted the smoking status of the high school students. Conclusions : In relation to the prevention of adolescents' smoking, it is recommended to decrease the stress levels of students, to make adolescents' parents cease smoking, and to educate adolescents on how to refuse the temptation to smoke or pressure from their smoking friend.

• Journal of Preventive Medicine and Public Health
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• v.15 no.1
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• pp.179-186
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• 1982

The methods controlling the confounding factors were discussed using the data of secondary infertility with induced abortion. Mantel-Haenszel method and logistic model were applied in the analysis to find out which factors were confounding and/or effect modification variables. In the logistic analysis, the main effect of induced abortion, spontaneous abortion, age and interaction effect between induced abortion and spontaneous abortion were chosen as independent variables being regressed into logistic functions. Spontaneons abortion was interpreted as a potential confounder and at the same time potential effect modifier and age was interpreted as potential confounder. Spontaneous abortion was shown to be more important influencing factor than age to the secondary infertility. In the course of logistic analysis, the problem of parameter estimation and hypothesis testing, assessing the fitness of a model, and selection of the best model were briefly explained. For the program of logistic model, FUNCAT Procedure of SAS package was chosen.

• Journal of Society of Preventive Korean Medicine
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• v.18 no.1
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• pp.113-123
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• 2014

Objective : This study is aimed to analyze the recent research trend of Sipjeondabo-tang (SJDBT) in Korea. Method : We searched Korean research database by using keyword 'Sipjeondabo-tang'. Databases are Korean Medicine Information System, Research Information Service System and Korean Studies Information Service System. We analyzed studies by research method, publication year, type of journal and subject of the study. Results : By analyzing studies published after 1990, we could find that experimental studies were primarily conducted in SJDBT study. During recent 10 years, the number of toxicity studies and components analysis studies is increasing. Among the SJDBT studies, the number of clinical study was only 1. Conclusion : We explored the recent research trend of SJDBT in Korea. As a result, We suggested three further research ways of SJDBT. Proposed research ways are exploring various effect of SJDBT, observing whether there is a difference of effect according to extracting and drying method, and conducting clinical research of SJDBT.

• Journal of Korean society of Dental Hygiene
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• v.1 no.1
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• pp.77-87
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• 2001

The authors have studied the 8 weeks clinical experiment on 34 dental patients of age 20s for control group and 32 for experimental 1 group(Paste Type Dentifrice with Bamboo Salt, Chitosan and Powder of Pine Needles and Leaves of Bamboo.) and 32 for experimental 2 group(Powder Type Dentifrice with Bamboo Salt, Chitosan and Powder of Pine Needles and Leaves of Bamboo), in order to find out the effect of plaque removal, prevention of calculus and stain formation. and Gingival effect. The obtained results are as following. 1. Plaque removal effect was the similar level on group 1 and on group 2 as control group. 2. For prevention of calculus formation, there was a little bit better on group 1 at 8 weeks, and for prevention of stain formation, it revealed more or less difference between on group 1, group 2 and control group at 8 weeks. 3. on PMA index, it revealed the significantly differences between group 1, group 2 and the control group at 8 weeks(p<0.05), so it is estimated that there might be signified for gingival subside effect by use of dentifrice with Bamboo Salt, Chitosan and Powder of Pine Needles and Leaves Bamboo.

• 대한예방의학회:학술대회논문집
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• 2001.10a
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• pp.353-354
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• 2001

• Journal of the Korean Operations Research and Management Science Society
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• v.3 no.2
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• pp.91-93
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• 1978

A methodology which can be employed to obtain an optimal preventive maintenance policy that maximizes the total machine running time over the specified working period is proposed. A system considered is comprised of m machines and r

• 대한예방의학회:학술대회논문집
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• 2000.10a
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• pp.270-271
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• 2000

• International Journal of Reliability and Applications
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• v.11 no.2
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• pp.123-138
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• 2010

This paper investigates a mathematical model of a system composed of two non-identical unit parallel system with common-cause failure, critical human error, non-critical human error, preventive maintenance and two type of repair, i.e. cheaper and costlier. This system goes for preventive maintenance at random epochs. We assume that the failure, repair and maintenance times are independent random variables. The failure rates, repair rates and preventive maintenance rate are constant for each unit. The system is analyzed by using the graphical evaluation and review technique (GERT) to obtain various related measures and we study the effect of the preventive maintenance preventive maintenance on the system performance. Certain important results have been derived as special cases. The plots for the mean time to system failure and the steady-state availability A(${\infty}$) of the system are drawn for different parametric values.