• Journal of Trauma and Injury
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• v.26 no.3
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• pp.139-150
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• 2013

Purpose: After a traffic accident, first-aid performed within the first few minutes is important for the injured in terms of survival, future health, and quality of life. Taxi drivers have more possibility of witnessing traffic accidents because they spend much time on the road. If taxi drivers are well trained and can perform first-aid in a correct manner, they will play an important role in pre-hospital emergency medical services. We investigated the effect of first-aid training on taxi drivers' willingness to perform emergency care. Methods: We provided first-aid training for 600 deluxe taxi drivers in Busan in 2012. The subjects were given a questionnaire to answer at the beginning and at the end of first-aid training. Results: 427 out of 600 deluxe taxi drivers answer our questionnaire completely. 93 out of 427 deluxe taxi drivers answered that they had first-aid training within past 3 years(21.8%). 323 taxi drivers have witnessed a traffic accident(76%). 45 out of 323 deluxe taxi drivers who witnessed a traffic accident answered that they provided first-aid to victims(14.0%). After first-aid training, taxi drivers' willingness to perform emergency care was increased compared to that before training. The failed group of taxi drivers that had same or decreased willingness after first-aid training had a low level of education than the successful group that had increased willingness after first-aid training. Conclusion: First-aid training increased taxi drivers' willingness to perform emergency care. So Taxi drivers should be encouraged more to undertake and maintain first-aid training. For more volunteering of first-aid training and improvement in the effect of first-aid training, a graded education program for taxi drivers with a low level of education should be developed, and a policy on giving credit for completing first-aid training course and for carrying out first-aid needs to be formulated.

• Communications for Statistical Applications and Methods
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• v.19 no.3
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• pp.333-344
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• 2012

We consider some statistical properties of the first order difference-based error variance estimator in nonparametric regression models with a single outlier. So far under an outlier(s) such difference-based estimators has been rarely discussed. We propose the first order difference-based estimator using the leave-one-out method to detect a single outlier and simulate the outlier detection in a nonparametric regression model with the single outlier. Moreover, the outlier detection works well. The results are promising even in nonparametric regression models with many outliers using some difference based estimators.

• Structural Engineering and Mechanics
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• v.52 no.1
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• pp.137-147
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• 2014

The present paper deals with the first ply failure analysis of the laminated composite plates under various static and dynamic loading conditions. Static analysis has been carried out under patch load and triangular load. The dynamic failure analysis has been carried out under triangular pulse load. The formulation has been carried out using the finite element method and a computer code has been developed. The first order shear deformation theory has been applied in the present formulation. The displacement time history analysis of laminated composite plate has been carried out and the results are compared with those published in literature to validate the formulation. The first ply failure load for laminated composite plates with various lamination schemes under static and dynamic loading conditions has been calculated using various failure criteria. The failure index-time history analysis has also been carried out and presented in this paper.

• The Korean Journal of Emergency Medical Services
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• v.16 no.1
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• pp.103-115
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• 2012

Purpose: This is the descriptive research for providing the basic data necessary for the first aid education after understanding the first aid experience, first aid education, first aid knowledge, and educational needs of ski resorts workers. Methods: 323 workers of domestic 9 ski resorts were surveyed for data, which was collected using the systematic questionnaire from Oct. $6^{th}$ to $20^{th}$, 2011. The collected data has been processed using the program of SPSS Win. Version 14.0 and analyzed that according to the purpose of research in terms of real number, percentage, standard deviation, t-test and ANOVA. Results: 1. 58.8%(190) of ski resort workers experienced an emergency on duty and 33.6%(108) carried out the first aid for emergency patients on duty. 2. 65.6%(210) of workers experienced first aid education. 3. The percentage of correct answers of first aid knowledge was average 46.8% and average $9.35{\pm}2.54$ points out of total 20 points. 4. The first aid educational necessity indicated as follows: ski resort workers need first aid education (97.5%, 306); workers want to have the education if they have chance (94.6%, 296 persons); in addition, they need the repeated education of first aid (95.6%, 301). Conclusion: It is understood that as special first aid service can be delayed in ski resorts due to their geographical characteristics, the workers of ski resorts need the continuous and systematic first aid education enabling them to play the first responder in the first aid system when emergency situation occurs.

• Journal of Korean Society of Transportation
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• v.20 no.1
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• pp.101-110
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• 2002

This study first explains general features of traffic assignment models and network loading methods, and investigates the relationship between them. Then it introduces a dynamic network loading method, which accounts far time variable additionally. First of all, this study suggests that it is important to consider some requirements for the dynamic network loading, such as causality, FIFO(First-In-First-Out) discipline, the flow propagation, and the flow conservation. The details of dynamic network loafing methods are explained in the form of algorithm, and numerical examples are shown in the test network by adopting deterministic queuing model for a link Performance function.

• Nuclear Engineering and Technology
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• v.52 no.1
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• pp.14-18
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• 2020

Korea Atomic Energy Research Institute (KAERI) has carried out various neutronics experiments in the commissioning stage of the Jordan Research and Training Reactor (JRTR), and this paper introduces the results of first criticality prediction and experiment for the JRTR. The Monte Carlo Code for Advanced Reactor Design and analysis (McCARD) with the ENDF/B-VII.0 nuclear library was used for prediction calculations in the process of the first criticality approach, which was performed to provide reference for the first criticality experiment. In the experiment, fuel loading was carried out by measuring the inverse multiplication factor (1/M) to predict the number of fuel assemblies at the first criticality, and the first critical was reached on April 25, 2016. Comparing the first criticality prediction and experiment, the calculated and measured CAR (Control Absorber Rod) heights for the first criticality were 575 mm and 570.5 mm, respectively, that is, the difference between the two results was approximately 5 mm. From this result, it was confirmed that JRTR manufacturing and various experiments had successfully progressed as designed.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 1982.10a
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• pp.51-55
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• 1982

The analysis of Korean language by the first order markov source is carried out. The calculated entropy of the first order Markov source is also included. The results presented here are new data. The data can be useful in designing the keyboard pattern of terminal and the automatic discrimination of monosyllable in Korean language.

• Restorative Dentistry and Endodontics
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• v.18 no.1
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• pp.84-94
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• 1993

The purpose of this study was to evaluate flexure strength of composite resin inlay according to heat treatment and duration in comparasion with visible light-cured resin. In this study, materials were used 1 visible light-cured resin and 3 kinds of composite resin inlays. Control group was visible light cured resin (Photo Clearfil Posterior) and experimental groups were composite resin inlays (Brilliant Dentin, Brilliant Enamel and Clearfil CR Inlay). Experimental groups were divided 3 groups: First group was Brilliant Dentin and second group was Brilliant Enamel and -third group was Clearfil CR Inlay. Used experimental groups were calculated flexural strength according to heat treatment and duration. The following results were obtained: 1. Experimental groups were higher flexural strength than control group. 2. At $100^{\circ}C$ when heat treatment carried out 7 minutes flexural strength elevated third group, second group, first group in turn and when heat treatment carried out 15 minutes flexural strength elevated third group, second group, first group in turn but no difference was showed between first and second group. 3. At $125^{\circ}C$ when heat treatment was carried out 7 minutes flexural strength elevated third group, second group, first group in turn and when heat treatment was carried out 15 minutes flexural strength elevated third group, first group, second group in turn but no difference was showed between first and second group. 4. In spite of heat treatment and duration the third group was highest flexural strength in the others groups.

• Journal of the Korean Data and Information Science Society
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• v.8 no.2
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• pp.119-125
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• 1997

We handle the stochastic processes of independent and identically distributed random variables. But random variables are usually dependent among themselves in actual life. So in this paper, we find out a new process not satisfying Markov property. We investigate the probability mass functions and study on the probability of the first-passage time. Also we find out the average frequency of continuous successes in from 0 to n time.

• The Korean Journal of Food & Health Convergence
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• v.10 no.2
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• pp.19-25
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• 2024

This study surveyed 171 police officers working in Jeollabuk-do to investigate their first aid knowledge and the need for education. The results showed that the correct answer rate for first aid knowledge among police officers was 75.61 points out of a possible 100 points. Additionally, 98.8% of respondents indicated a need for first aid training, expressing a preference for 2-hour sessions integrated with their work education. There was a statistically significant difference in the correct answer rate for first aid knowledge based on education level and experience in emergency situations, but no significant difference in the need for education was observed across respondents. The significance of this research lies in its provision of foundational data for first aid education among police officers, which can be instrumental in developing training programs and policies aimed at enhancing their first aid capabilities. Specifically, the study contributes to improving the effectiveness of police officers' responses in emergency situations by offering concrete suggestions on the content, method, and duration of first aid training. These findings underscore the necessity and importance of providing comprehensive and effective first aid training not only to police officers but to all first responders, emphasizing that such training is crucial for ensuring public safety.