• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.7
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• pp.635-643
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• 2017

This study examines the relationship between emotional labor and depression in dental hygienists. Data were collected from 186 dental hygienists working in dental clinics in Daegu from early March to early April 2016. The survey was composed of questionnaires related to general characteristics, work-related characteristics, emotional labor, and depression. As a result of analyzing the subordinate factors of emotional labor, 57.0% of the factors of 'organization support and protection system' were the highest, and the effect of emotional labor on depression was 'emotionaldisharmony and damage', 'Organizational support and protection system', and especially, the ' emotionaldisharmany and damage' factors were 4.042 times higher than normal. The dental hygienist's degree of emotional labor risk is high, and education, prevention and management measures for emotional labor will be prepared. In addition, emotional labor affects the depression of dental hygienists as well, and comprehensive mental health measures are needed to take into consideration general and occupational characteristics that affect depression.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.12
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• pp.5816-5825
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• 2012

As the society has been ageing, senile dementia increase rapidly. Thus social costs of dementia treatment and management increase exceedingly. There is a desperate need of finding out improvements.. For example, foreign countries come with the solutions about this issue by establishing national strategy about Dementia, setting effective Dementia Management in national level and preparing legal systems. Older Welfare Act, Long Term Care Insurance Act for the Aged and Dementia Management Act exist as legal system of improvements. Improvement about this issue is needed due to more effective Dementia management and pushing ahead policies. First of all, the government needs to include dementia checkup into the list of national health insurance checkup toward senior citizen of older than 65-year-old. Secondly, as one of the characteristics of dementia, when more symptoms of dementia appear, there is less effect of treatment. Therefore, in order to reduce the social costs of Dementia, the government needs to promote Dementia prevention industry and early checkups. Thirdly, there is a need of setting a class judgement standard appeasement policy and expansion of using target. The reason of processing this statement is that there are difficulties of satisfying the needs of senior citizens due to current conformity of long-term pay recuperation according to laws of welfare.

• Journal of the Korean Society of Marine Environment & Safety
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• v.24 no.1
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• pp.36-42
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• 2018

This paper considers the Marine Traffic Risk Assessment for fixed and moving targets, which threaten officers during a voyage. The Collision Risk Assessment Formula was calculated based on a dynamic ship domain considering the length, speed and maneuvering capability of a vessel. In particular, the Navigation Risk Assessment Model that is used to quantitatively index the effect of a ship's size, speed, etc. has been reviewed and improved using a hybrid combination of a vessel's dynamic area and the Collision Risk Assessment Formula. Accordingly, a new type of Marine Traffic Risk Assessment Model has been suggested giving consideration to the Speed Length Ratio, which was not sufficiently reflected in the existing Risk Assessment Model. The larger the Speed Length Ratio (dimensionless speed), the higher the CJ value. That is, the CJ value is presented well by the Speed Length Ratio. When the Speed Length Ratio is large, states ranging from [Caution], [Warning], [Dangerous] or [Very Dangerous] are presented from a greater distance than when the Speed Length Ratio is small. The results of this study, can be used for route and port development, including dangerous route avoidance, optimum route planning, breakwater width, bridge span, etc. as well as the development of costal navigation safety charts. This research is also applicable for the selection of optimum ship routing and the prevention of collisions for smart ships such as autonomous vessels.

• Journal of Korean Tunnelling and Underground Space Association
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• v.14 no.1
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• pp.1-22
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• 2012

This paper tried to verify whether the fixed fire fighting system (FFFS) that is installed in road tunnel improves evacuation performance or not. Verification was performed according to the Disaster Prevention Facilities Installation and Management Guide at Road Tunnel. Twenty seven different fire scenarios were set up for the verification and the cases that FFFS was installed were compared with the cases that FFFS was not installed. The result of the comparison showed that the average equivalent death was reduced in 26 cases out of 27 cases when water spray extinguishing system was installed. It was confirmed that the risk when was not installed was unacceptable in Hong Kong and the Netherlands. On the other hand, it was confirmed that the risk was reduced to as low as reasonably practicable (ALARP) when was installed. The cumulative frequency of average death in case with FFFS was compared against the frequency of death without FFFS: death of one or more is about 50 times less; 10 or more is about 100 times less; and the death of more than 100 is four times less. It was verified that FFFS makes improved conditions to escape from the fires in road tunnel.

• Journal of Korean Tunnelling and Underground Space Association
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• v.20 no.1
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• pp.11-22
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• 2018

The safety of tunnels is quantified by quantitative risk assessment when planning the disaster prevention facilities of railway tunnels, and it is decided whether they are appropriate. The purpose of this study is to estimate the probability of the train stopping in the tunnels at train fire, which has a significant effect on the results of quantitative risk assessment for tunnel fires. For this purpose, a model was developed to calculate the coasting distance of the train considering the coefficient of train running resistance. The probability of stopping in case of train fire in the tunnel is predicted by the Monte Carlo simulation method with the coasting distance and the emergency braking distance as parameters of the tunnel lengths and slopes, train initial driving speeds. The kinetic equations for predicting the coasting distance were analyzed by reflecting the coefficient train running resistance of KTX II. In the case of KTX II trains, the coasting distance is reduced as the slope increases in a tunnel with an upward slope, but it is possible to continue driving without stopping in a slope downward. The probability of the train stopping in the case of train fire in tunnel decreases as the train speed increases and the slope of the tunnel decreases. If human error is not taken into account, the probability that a high-speed train traveling at a speed of 250 km/h or above will stop in a tunnel due to a fire is 0% when the slope of the tunnel is 0.5% or less, and the probability of stopping increases rapidly as the tunnel slope increases and the tunnel length increases.

• Women's Health Nursing
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• v.6 no.4
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• pp.549-565
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• 2000

Comprehensive review of the literature was conducted to determine 1) selected risk factors and its impact that affect pregnancy outcome such as smoking, alcohol consumption, and substance abuse 2) these factors can facilitate future strategies for health promotion and prevention for both pregnant women and fetus. Review of literature were extracted from searching MEDLINE(1966 - Oct. 2000). CINAHL (1982 - Oct. 2000) and the domestic literature. The following factors were identified: 1. The effects of risk behaviors on pregnancy. ${\cdot}$Maternal smoking was associated with the occurrence of premature or LBW delivery, fetal growth retardation, extremities defects, heart defects and sudden infant death syndrome. ${\cdot}$Maternal alcohol consumption was associated with spontaneous abortion, premature or LBW delivery, morphologic/neurologic problems, especially fetal alcohol syndrome. ${\cdot}$Heroin was associated with withdrawal after birth in which were born to heroine addicts for gestational age and lung maturation in animal studies. ${\cdot}$Cocaine was associated with spontaneous abortion, abruptio placenta and a poor response to environmental stimuli. ${\cdot}$So far, the effects of caffeine on pregnancy was controversial, but severe caffeine consumption was associated with premature or LBW delivery, spontaneous abortion, still birth and dystocia. 2. Intervention methods and its effects identified were as follows ${\cdot}$Conducted intervention for smoking, alcohol and drug consumption were single or combined. ${\cdot}$Intervention methods were counseling, phone contact, mailing, use of educational videotape, booklet, support person and alternatives such as nicotine patch. ${\cdot}$The interventions increased the rates of smoking cessation during pregnancy and awareness of the risk of drug consumption, and decreased amount of alcohol consumption. ${\cdot}$The intervention outcome found positive effect on birth weight and length. 3. Our recommendations were as follows ${\cdot}$The personal and social cognition should be enhanced through education and the mass media. ${\cdot}$It's necessary to educate and give information of preconceptional care, planned pregnancy and early prenatal care for optimal pregnancy outcome. ${\cdot}$It's necessary to develop comprehensive assessment tool which is reliable and valid on smoking, alcohol consumption and substance abuse to identify supportive or interventional program.

• Journal of Applied Biological Chemistry
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• v.54 no.4
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• pp.265-269
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• 2011

Inhibitory effect of useful components from Cheongmoknosang mulberry leaves extracts against Helicobacter pylori were investigated to develope them to a health functional food. It was confirmed that H. pylori bacterial infection occurred after 6 weeks over in C57BL/6 mouse which was caused the infection, and the average number of pathogens was $8{\times}10^5$ CFU/mL. Effects of the prevention and cure against H. pylori were tested by the mouth administration with Cheongmoknosang mulberry leaves extracts include the active ingredient, and number of H. pylori colony in stomach of drug groups were decreased more than control group. The result of testing immuno-glogulin isotype from the separated serum from a mouse, IgG1, IgA produced more in administered group, and it is expected to inhibit the H. pylori infection because of increasing antibody production in the mixture. These results suggest that caffeic acid, rosemarinic acid and chlorogenic acid in Cheongmoknosang mulberry leaves extracts are very effective to prevent or cure against H. pylori infection. So the ratio of infection is increasing and it is regarded to be able to prevent and cure the disease like gastritis, gastric ulcer and gastric cancer which are caused by H. pylori.

• Journal of Korean Society of Environmental Engineers
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• v.32 no.3
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• pp.256-263
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• 2010

The study was performed to evaluate the effects of chloride concentrations on the ultimate aerobic biodegradability and to use the result as the fundamental data for sea food wastewater treatment. When the organic removal efficiency by chloride concentrations (1,400~18,000 mg/L) was evaluated, microbes adapted to the saline at ${\leq}$ 6,000 mg/L of chloride but treatment efficiency was not improved at ${\geq}$ 12,000 mg/L of chloride because of delayed reaction time. Functional coefficient $Y_I$ of non-biodegradable soluble organic and inert material production coefficient Yp by microbe metabolism increased as chloride concentrations increased. Soluble organic matter ratio by chloride concentration (0~18,000 mg/L) was 10.8~13.1%, inert material production efficiency by microbes metabolism was evaluated as 7.0~24.6%. $NH_3$-N removal efficiencies were 96.2, 96.5, 90.2 and 90.3% using original wastewater HRT 18 hr, 6,000 mg/L chloride concentration HRT 22 hr, 12,000 mg/L chloride concentration HRT 30 hr, and 18,000 mg/L chloride concentration HRT 45 hr, respectively. Nitrification process was more sensitive to salt concentration than organic matter removal to salt concentration. Under ${\geq}$ 6,000 mg/L chloride concentration, conversion rate from $NO_s$-N to $NO_2$-N was low.

• The Journal of the Korea Contents Association
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• v.16 no.11
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• pp.308-320
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• 2016

This research is an empirical case study that suggests the practical practice and output of action plan, the actual performing activity of risk management system established to prevent and respond to risk of the elderly care facility. For this, this research analyzed the action plan practice process and outcome upon 2 years' practice (2014~2015) by A Elderly care facility which has conducted performance activity by establishing risk management system to prevent and respond to danger for the first time in Korea. As the research result, first, risk management system action plan was established in the choice and performance stage of risk prevention and response handling method, the 3rd among 4 staged process of risk management system establishment. Second, as the outcome along with risk management system action plan performance, as the result of comprehending the investigation on risk change for 2 years(2014~2015), risk decreased by 28% in 2015 compared to 2014, displaying effect in risk management activity along with performing action plan. Based on this result, it was determined that action plan for the effective action plan establishment and practice in the elderly care facility should be established with systematic promotion schedule to be well connected with its strategy, achievement goal, and achievement project, etc. based on vision and strategy, instead of being established individually, based on clear matter of responsibility, utilizing such technique as Gantt chart, etc., composing concretely by schematizing in order to view all contents to be practiced clearly.

• Quality Improvement in Health Care
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• v.8 no.1
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• pp.10-21
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• 2001

Background : The Clostridium difficile is the most important identifiable cause of nosocomial infectious diarrhea and colitis, which lengthens hospital stay. Recently incidence of C. difficile has been increasing in an university hospital, and an intervention for prevention and control of C. difficile associated diarrhea (CDAD) was in prompt need. Methods : Subjects were the patients in the neurosurgical intensive care unit(NCU) where C. difficile was most frequently isolated. To increase participation of various departments, we used the CQI method, because management of CDAD requires a wholistic approach including control of antibiotics, barrier precaution and environmental cleaning and disinfection. Duration of the CQI activities was 9 months from April to December 1999. Results : The identified problems were misuse and overuse of antibiotics, lack of consciousness of medical personnels and the possibility of transmission from the contaminated environment and tube feeding. Education for proper use of antibiotics and management of C. difficile infection, use of precaution stickers, supplement of handwashing equipments, emphasis on environmental disinfection, and the change of the process of tube feeding were done. The CDAD rate in NCU was significantly decreased after the CQI program (8.6 case per 1,000 patient days from January to April 1999 vs 4.8 from May to December 1999). The distribution of neurosurgical wards including NCU among the total number of isolated C. difficile from the clinical specimens dropped from 49.4% in January to April to 33,7% in May to December. The average hospital stay of the neurosurgical department changed from 19.6 days to 15.2 days. Also, the effect of the CQI activities for C. difficile may have affected the incidence of vancomycin resistant enterococci (VRE). Duration and dosage of certain antibiotics used in the NS department were decreased. The distribution of neurosurgical department in the number of VRE isolated patients declined from 18.4% to 11.1%. Conclusion : Infection control of resistant organisms such as C. difficile is likely to be successful when management of environmental contamination an collaborative efforts of decreasing the patients' risk factors such as antibiotics management and decreasing the length of hospital stay come simultaneously. For this work, related departments need to actively participate in the entire process under a common target through discussions for identifying problems and bringing up solutions. In this respect, making use of a CQI team is an efficient method of infection control for gathering participation and cooperation of related departments.