• 대한기계학회:학술대회논문집
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• 대한기계학회 2000년도 춘계학술대회논문집B
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• pp.593-598
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• 2000

Experimental study is conducted to clarify the pneumatic characteristics of brake system for freight train. Empty-load and diaphragm brake systems are mainly installed in the freight trains owned by KNR(Korean National Railroad). Experimental train set is composed of sixteen freight train and one diesel locomotive that are now in use. From the experimental results, in case of commercial brake, empty-load brake system responds to the brake command more slowly than the diaphragm brake system. But, in case of release command, the response time of diaphragm brake system is shorter than that of empty-load one. In the emergency brake test, the decreasing rate of brake pipe pressure of tenth car is almost same that of decreasing rate of commercial brake service.

• 한국응급구조학회지
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• 제12권3호
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• pp.99-113
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• 2008

In order to protect Rescue 119 workers exposed on the spot from potential infection, this study identified their awareness and practices of infection control so that it could help preventing them from infection and also provide basic materials necessary for pre-hospital infection control. This study applied questionnaire survey to total 215 Rescue 119 workers at fire stations in Jeonbuk province, Jeonnam province and Gwangju city from July 14 to Sept. 14, 2006 for the benefit of data collection. The questionnaire about possible associations between awareness and practices of infection control consisted of total 46 times across 6 categories such as washing hands during emergency activities ; fluid therapy and injection ; respirator maintenance; individual hygienics ; disinfectant supplies and equipments maintenance ; and control of infectious wastes. And collected data were processed using SPSS statistic program to analyze frequency and percentage, mean and standard deviation, Pearson's correlation coefficient, t-test and one-way ANOVA. As a result, this study came to the following conclusions : In terms of awareness about infection control, our respondents showed highest awareness about infectious waste control, and also showed highest level of practices in washing hands during emergency activities. Throughout all domains, awareness means were higher than practice means. In particular, infectious waste control was the domain of significant differences between awareness and practices. In terms of associations between awareness and individual characteristics, it was found that female rescue worker group and hospital/general hospital career group (before joining the Rescue 119) showed significantly higher awareness on statistic level. In regard to associations between individual characteristics and practices, it was found that female rescue worker group showed higher level of practices than male group on statistic level. This study also analyzed correlations between rescue workers' awareness and practice of infection control. As a result, it was found that the higher awareness was in correlations with the higher practices across all 6 domains including washing hands. In addition, the higher awareness of a questionnaire item was in significantly positive correlations with the higher practice of other items. However, our respondents showed high awareness about anti-infection, but low practices in reality. This indicates necessity of devising possible solutions to improve the practices as much as awareness. Especially, it was noted that major reasons for insufficient practices of infection control guideline come from unhabituated practices and lack of supports for infection-preventing supplies and protective device (mask, etc). Hence, it is necessary to provide more infection-preventing supplies for local rescue workers sufficiently, in parallel with steady habituation of infection control. Furthermore, it is required to manage and study infection control policies even at pre-hospital step in efforts for effective infection control, education and activities.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 학술회의 논문집 정보 및 제어부문 B
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• pp.616-620
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• 2003

Brake action is important in train operation. In case of diesel motor cas, coachs and wagon, the brake system is only act on the stop of train, but it is emphasis on safety and convenience in urban transit system such as EMU, subwar, AGT, etc. Brake of EMU has two types. one is called service brake that is used at normal operation. The other is called emergency brake. it is used at emergency operation. Service brake bring a EMU to a halt through a blending brake that form electronic brake and frictional brake. Generally EMU compose motor car and trailer car. Blending brake bring a EMU to a halt through a blending brake that form electronic brake of motor car and frictional brake of trailer car. Blending braking technology have different characteristics each nations or manufacturing companies. but deceleration command that is parameter decide blending brake. According to deceleration command, electronic brake and frictional brake are applied differently So braking power is different. electronic brake and frictional brake must be used appropriately as deceleration command. Also braking facilities must be stopped EMU more economically and safely through revision of algorism about blending brake according to output diagram. Thus The purpose of paper is to propose blending braking control way as consideration of braking output diagram used deceleration command that influence blending brake of EMU.

• 한국응급구조학회지
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• 제12권1호
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• pp.27-41
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• 2008

Purpose : With increasing number of school accidents, it is crucial to find out necessity of first aid training among school health educator. This study has been conducted to have an clear idea on the demands and necessity for first aid training and what kind of training is most required from school health educator. Method : In this study, questionnaires from 87 school health educator in elementary, middle and high school health educator in the city D were analyzed. The survey was carned out from May 26, 2008 to June 7, 2008 and from the collected data, frequency, independent two samples t-test, paired T-test, one way ANOVA and pearson's correlation were conducted with SPSS 14.0. Result: 1. 51.61 % of nurse-teachers experienced emergency situations and the relations between the necessity they felt from experiencing those situations and demands for first aid training were not statistically meaningful(t=1.87, p= .175). 2. Necessity and demands for the first-aid training were checked with three point scale and there were statistical significance between the two with $2.44{\pm}.47$ and $2.24{\pm}.47$ respectively(t=3.275, p= .000). 3. 86.20%(75 persons) of the respondents have had received first aid training and the training they received were CPR 82.75%(72 persons), primary survey 81.60%(7l persons), contact to 911 79.30%(69 persons) and wounds treatment(lacerated wounds, bum and chilblains) 75.86%( 66 persons) in order. 4. As for the questions that ask on confidence of first-aid treatment, 80% answered they are confident on some limited kinds of treatments, 16% said they are confident and 4% answered they lack confidence. As for the treatment that they can show the highest confidence, wounds treatment topped the list with 93.24%, nose bleeding and removing foreign substance, and stanching followed the list with 82.43% and 81.08% respectively. 5. 97.67% of respondents said they were willing to take training and 89.62% answered to take the training to deal with emergency situations that are taking place in their schools. As for the question that asks for the most wanted treatments, CPR topped the list with 32.18%(28 persons) and treatment for obstruction of airway and shock followed the list with 35.63%(31 persons) and 27.59%(24 persons). Conclusion : Currently, first aid treatment has been centered on CPR, primary survey, contact to 119 and wounds treatment. However, since most of school health educator are fairly confident with wounds treatment, stanching and other first aids, in future training it will be more desirable to focus on CPR and treatment for obstruction of airway and shock that were shown to be most wanted by school health educator.

• 한국응급구조학회지
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• 제11권3호
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• pp.139-152
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• 2007

Background and Purpose : Emergencies in the school setting occurs frequently. Therefore, the role of first responders is important. General teachers in elementary schools are expected by first responders in school emergencies. This study attempted to assess needs and demands assessment on the first aid education of general teachers in elementary schools. Method : The subjects of this study were 71 general teachers from 8 elementary schools. Data were collected by the questionnaire during the period from March 19 to April 13, 2007. The data were analyzed through frequency, Cronbach's ${\alpha}$, Independent Two samples t-test, paired T-test, One Way ANOVA, Pearson's Correlation by SPSS win 12.0. Result : 1. It showed that 47.9%(34 persons) of general teachers answerd that they experienced emergencies in elementary school setting. Experienced emergencies were wounds(cut, laceration, abrasion etc.) 79.4%(27 persons), bleeding(including epistaxis) 64.7%(22 person), fracture(including dislocation, sprain) 44.1%(15 person), sting or bite 29.4%(10 persons). 2. It showed that 95.8%(68 persons) of subjects answerd that first aid education are necessary. Also 91.5%(65 persons) of subjects answerd that will be educated first aid if opportunities is given. 3. The total mean showed $2.39{\pm}.40$ in necessities of first aid education and $2.17{\pm}.36$ in needs of first aid education by 3 points Likert scale. Ranking 1 in necessities and needs of first aid education was bleeding control. 4. The total mean in necessities and needs of first aid education showed statistically significant differences(t = 3.453, p = .002). 5. The necessities of first aid education showed significant positive correlations with necessities and needs of first aid education(r = .521, p = .002). Conclusion : These results suggest that education program of first aid on elementary general teachers must be developed through necessities and needs assessment of first aid education and instructors must searched methods to increase needs of first aid.

• 한국응급구조학회지
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• 제10권3호
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• pp.21-32
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• 2006

Purpose: This study was performed to examine the ethical values of EMT students. Method: The results below were based on the revised questionnaires, which can be applicable to EMT from the using questionnaires by Kim(2001), with a sample of 140 students consisting of 50 freshman, 40 sophomore and junior 50, conducted October 9-11, 2006. Data were analyzed using SPSS 13.0 in terms of means and standard deviation, $x^2$-test, one way ANOVA, multiple regression analysis. Results: The ethical value was deontological ethics and statistically significant difference between three groups(F=3.072, p<0.049). Means and standard deviation of freshman is $2.86{\pm}0.28$, sophomore is $2.75{\pm}0.25$, junior is $2.88{\pm}0.21$. In the area of Human life, subjects showed utilitarian disposition. But there were no statistically significant difference between three groups. In the area of patient relationship, all students of three groups took on deontological ethics, but there were no statistically significant difference. In the area of task relationship, all students of three groups took on deontological ethics, but there were no statistically significant difference. In the area of coworker relationship, all students of three groups took on deontological ethics, but there were no statistically significant difference. As a results of multiple regresstion analysis, the associated factors with ethical values were second students, participation of ethical education, a firm belief of ethical values. Conclusion: This results showed that education of ethical values must instruct to EMT students. More and more, It is necessary to make an further application tool of EMT.

• 한국간호교육학회지
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• 제17권1호
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• pp.5-13
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• 2011

Purpose: The purpose of this study was to develop a lesson plan related to a simulation for nursing students by understanding what relationship learning satisfaction, self-efficacy and learning attitude have after applying simulation-based education on emergency nursing care. Methods: Simulation practice, seminar, class and group self-study about a patient having a myocardial infarction were applied to nursing students for 5 weeks. After applying the simulation-based education on emergency nursing care, students rated their learning attitude, learning satisfaction and a sense of self-efficacy with a self-administered questionnaire and academic achievement was divided into written and performance evaluation. SPSS/WIN 17.0 was used for descriptive analysis, independent t-test, one-way ANOVA and pearson correlation were also used. Results: In this study, the performance evaluation score was related to learning attitude (r=.210, p=.018).Learning satisfaction (r=.220, p=.013)and written evaluation score was related to learning attitude (r=.211, p=.017) and learning satisfaction (r=.190, p=.032). Conclusion: In this study, simulation-based learning was a useful method for practical ability and this is good to acquire both of knowledge and technique. Not only evaluation of theoretical knowledge but performance ability related to practice has to be done by developing lessons with various methods and content. In addition, a standard evaluation method needs to be developed.

• 한국응급구조학회지
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• 제20권2호
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• pp.127-144
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• 2016

Purpose: The purpose of this study was to investigate the drinking behavior of university students in Jeju for the safe campus life. Methods: A self-reported questionnaire was completed by 549 students in 4 universities in Jeju. The data were analyzed by t-test, one way ANOVA, and multiple regression using SPSS Win 19.0 program. The questionnaire instruments consisted of Alcohol Use Disorders of Identification Test-Korea (AUDIT-K) and Life Stress Scale for College Students adapted by Chon. Results: The alcohol consumption rate of participants accounted for 96.2%. The binge drinking rate in female students were 33.9% and that in male students was 29.5%. The result by scoring AUDIT showed that 30.7% of participants were normal drinking group, 36.0% were hazardous drinking group, and 33.3% were estimated alcohol abuse group. The average score of stress was 1.45 by Likert 4 point scale. The female students tended to have more stresses than male. The most important influencing factors on drinking behavior were the first alcohol drinking(${\beta}=-.250$, p< .001), gender(${\beta}=.202$, p< .001), and relationship problem(${\beta}=.116$, p < .05). Conclusion: The drinking rate of university students revealed higher than that in other age groups. So the early systematic education is strongly recommended to prevent the physical and mental side effects.

• 한국학교ㆍ지역보건교육학회지
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• 제18권2호
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• pp.97-105
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• 2017

Objectives: The purpose of this study is to investigate the knowledge, confidence and coping ability about emergency treatment, and the impact of right knowledge and confidence in practice on coping ability in part of dental hygienists. In addition, we suggest emergency treatment knowledge for develop substantive education program applicable to clinical as required data. Methods: This subjects were 259 dental hygienists working in dental setting Seoul, Gyeonggi-do from June 5 to July 20, 2016. We analyzed the data with frequency analysis, descriptive statistics, t-test, one-way ANOVA, pearson correlation coefficient, regression analysis by using SPSS. Results: Emergencies experienced by a dental hygienist in dental practice were fainting, local anesthetic allergies, and seizures. As a result of comparing the first aid knowledge, self-confidence, coping ability according to general characteristics of the study subjects, university graduation was higher than college and 3~5 years of working experience showed higher self confidence(F=3.837, p=0.023). The performance of self confidence and coping ability according to the characteristics of first aid showed high results in first aid training and dental hygienist having CPR license. Based on multiple regression analysis, confidence about emergency treatment is the biggest impact on coping ability(p<0.05). Conclusions: Dental hygienists need to develop and provide programs that can improve the ability of dental hygienists to respond appropriately and promptly in case of emergencies by recognizing the importance of first aid through conservative education.

• 한국응급구조학회지
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• 제26권1호
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• pp.57-70
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• 2022

Purpose: The purpose of this study was to investigate the effect of coronavirus disease-19 (COVID-19) knowledge, anxiety, and psychosocial well-being on the infection prevention behavior of college students in health care. Methods: This study is a descriptive survey research. A total of 301 college students at four health care departments in three regions were surveyed using a structured questionnaire from February 10 to February 16, 2022. The collected data were analyzed using descriptive statistics, independent t-test, and one-way ANOVA. Pearson correlation coefficients and multiple regression analyses were done using SPSS ver. 18.0. Results: Knowledge on COVID-19 was significantly dependent on a family history of chronic disease (p=.049). Anxiety was significantly dependent on test of COVID-19 (p=.040). Gender (p=.049), perceived physical and mental health status (p=.000), and chronic disease (p=.000) had significant effects on infection prevention behavior. When the level of anxiety was higher, the infection prevention behavior was also higher (p=.000) and the psychosocial well-being was improved (p=.017). Stepwise multiple regression analysis revealed that anxiety significantly improved the infection prevention behavior (𝛽=.396, p<.001) and psychosocial well-being (𝛽=-.139, p=.008), which accounts for 18.5% (F=22.444, p<.001) of the variance. Conclusion: In order to prevent infectious diseases such as COVID-19 and its spread, measures to prevent infection and improve the psychosocial well-being should also be sought.