• Proceedings of the KSR Conference
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• 2009.05a
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• pp.1906-1913
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• 2009

The each train operators in Korea have its own public railway safety campaign program but it is not systematic and repeated because of budget limitation. Continuous public casualties in railway transportation require that organized safety education program for the public. This paper analysed statistics of public casualties so that urgent subject occurring many times should be developed primarily as education program. Several foreign cases were investigated and characterized. Finally, a railway safety education program proposed. The program is designed to supply experiential learning, lecture and exhibition.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.16 no.3
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• pp.1-14
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• 2017

Recently, the automobile industry is rapidly changing due to autonomous vehicles based on advanced ICT technology. As a result, studies related to autonomous vehicles have also been actively conducted. However, most studies are focusing on the autonomous driving technology so that the prediction of changes in road traffic safety and associated legal system due to the introduction of autonomous vehicles are lacking. The purpose of this study is to suggest improvement methods and priorities of road traffic safety projects according to the introduction of autonomous vehicles. As a result of the AHP analysis using the results of the questionnaire surveyed for autonomous driving car experts, it was analyzed that revision of the traffic safety inspection law and development of education system for autonomous driving motor drivers and operators should be given top priority.

• Journal of the Korean Society of Marine Environment & Safety
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• v.25 no.7
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• pp.874-880
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• 2019

Korea entered the aging society in 2000 and has been officially classified as an aged society as of 2019. As a result thereof, the number of aging seamen and the number of marine accidents of aging crews have consistently increased every year. The aging of drivers, in the relam of road traffic, is the same as those in the field of shipping. However, research and policy-making to solve these problems in the realm of road transportation are more active than in the shipping field. Therefore, this study is aimed at finding education methods for reducing traffic accidents by old aging drivers and determining the benchmark in terms of maritime education. In the area of domestic and foreign road traffic, traffic safety education for older aging drivers is implemented as a way to reduce the causes of human factors in traffic accidents. This study analyzed the current situation of the maritime education field and combined it with the solution in the field of road traffic. First, it is deemed necessary to implement professional license acquisition education. Second, job refresher training for the renewal of the license for aging seamen has to be implemented. Lastly, it is imperative to implement the age transition education for aging seamen. This study, however, is limited to determining the improvement plan for maritime education in relation to aging seamen. Therefore, it is necessary to investigate varying studies in the future.

• Transactions of the Korean Society of Automotive Engineers
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• v.14 no.5
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• pp.186-194
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• 2006

Traffic accident involved with the vulnerable pedestrian is one of the significant concerns, which has higher possibility of fatality than any other accident types. Worldwide significant efforts have been made to establish a vehicle safety regulation, which is internationally agreed, in order to reduce pedestrian casualties in pedestrian-vehicle collisions. One of the key issues in deriving the regulation is how to effectively select the parameter values associated with the regulation. This study firstly develops a method to optimize parameter values. An optimizing problem in terms of maximizing safety benefits, which are life-saving effects by the regulation, is formulated. Extensive actual accident data analysis and simulations are conducted to establish several statistical models to be used in the proposed optimization procedure. A set of parameter values that can produce maximizing life-saving effects is presented as the outcome of this study. It is expected that the proposed method would play a significant role in determining parameters as a decision support tool toward ensuring better pedestrian safety.

• Journal of the Korea Safety Management & Science
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• v.17 no.3
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• pp.307-317
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• 2015

This study was to identify the effect of the satisfaction of certification, the educational use of the company offering certificate, the system of confirmation of the same model and the demographic aspect on the companies to see if compulsory certification(KC certificate) has negative effects on company management. First, the satisfaction of certification could reflect positive influences on company management. Second, there is no statistical significance in the education from the company offering certificate as a result of analyzing relationships but education is required and has an effect on improving quality according to the result of frequency analysis. Last, the system to declare by identifying the same model has a difference in significance in sales account, the development of products and warranty service for products.

• Journal of Fisheries and Marine Sciences Education
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• v.28 no.2
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• pp.401-406
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• 2016

Elevator is very important transportation facility of modern society. But there have been frequent elevator accidents recently. In the view of safety management of elevator, the corresponding study must be done since accidents related elevator include not only actual accident but also possible accident in order to protect user from danger. A 3D design was developed using SolidWorks and behavior analysis using FEM Code.

• Journal of Korean Society of Transportation
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• v.29 no.3
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• pp.21-29
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• 2011

The purpose of this study is to analyze the deterrence effect of traffic safety education on DWI(Driving While Intoxicated) offenders which is proposed as a incentive policy measure. For the analysis, 3512 drivers whose licenses were suspended due to DWI offence within the jurisdiction of Seongnam city in 2003, and whose driving behavior were traced for 5 years are collected. MOEs used in the study are the number of repeated DWI offence and DWI abidance duration. The statistics of analysis of covariance are used to compare the deterrence effectiveness of traffic safety education by adjusted means between groups. The results show that compared to uneducated group, educated group reveals to make less number of repeated DWI offence with longer DWI abidance period The resulting statistic also shows that active participation in the discussion during the class is more effective than just giving lecture. The former way for education can further reduce the repeated DWI by 12% and increase DWI abidance duration by 5.7% than the latter.

• The Korean Journal of Emergency Medical Services
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• v.10 no.1
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• pp.41-49
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• 2006

Purpose: It can be said that the aged belong to the group vulnerable to safety accidents. The purpose of this study was to investigate safety accidents to old people and provide basic data to prevent them from being in a safety accident. Result : 1. The number of the aged of traffic accident fatalities per 100,000 persons was 57.8, which was significantly higher than other OECD countries. 2. trauma for the aged, falling accounted for 60.6%, which was relatively higher than other wounds, probably because of decreased capacity of movement and reduced faculty of sensation. 3. accidents to the aged at home, 43.9% occurred in a room, which shows great risk of safety accidents to the aged in a room. 4. the aged generally showed negative awareness of social safety. Suggestion : 1. it is necessary to provide regular education about accidents through the mass media and at social welfare facilities in order for aged people to consolidate safety consciousness repeatedly. 2. it is necessary to make a brief and clear guide to prevention of accidents. 3. the Ministry of Construction and Transportation and the Ministry of Health and Welfare should give priority to designing a building for aged people and authorize construction according to the standards for establishing safety facilities for the aged. 4. it is necessary to change social consciousness. since transportation accidents can be caused not by aged people's insufficient safety consciousness but by that of all the people, it is necessary to provide society-wide education programs against dangerous driving in order to guarantee aged people's safety. 5. legal procedure to secure aged people's safety should be strengthened to reinforce legal protection for them.

• Wind and Structures
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• v.20 no.4
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• pp.549-564
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• 2015

The three-dimensional unsteady incompressible Reynolds-averaged Navier-Stokes equations and k-${\varepsilon}$ double equations turbulent model were used to investigate the effect on the measurements of anemometers due to a passing high-speed train. Sliding mesh technology in Fluent was utilized to treat the moving boundary problem. The high-speed train considered in this paper was with bogies and inter-carriage gaps. Combined with the results of the wind tunnel test in a published paper, the accuracy of the present numerical method was validated to be used for further study. In addition, the difference of slipstream between three-car and eight-car grouping models was analyzed, and a series of numerical simulations were carried out to study the influences of the anemometer heights, the train speeds, the crosswind speeds and the directions of the induced slipstream on the measurements of the anemometers. The results show that the influence factors of the train-induced slipstream are the passing head car and tail car. Using the three-car grouping model to analyze the train-induced flow is reasonable. The maxima of horizontal slipstream velocity tend to reduce as the height of the anemometer increases. With the train speed increasing, the relationship between $V_{train}$ and $V_{induced\;slipstream}$ can be expressed with linear increment. In the absence of natural wind conditions, from the head car arriving to the tail car leaving, the induced wind direction changes about $330^{\circ}$, while under the crosswind condition the wind direction fluctuates around $-90^{\circ}$. With the crosswind speed increasing, the peaks of $V_X,{\mid}V_{XY}-V_{wind}{\mid}$ of the head car and that of $V_X$ of the tail car tend to enlarge. Thus, when anemometers are installed along high-speed railways, it is important to study the effect on the measurements of anemometers due to the train-induced slipstream.

• Journal of Microbiology and Biotechnology
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• v.31 no.9
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• pp.1311-1322
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• 2021

Microbially induced calcium carbonate precipitation (MICP) has recently become an intelligent and environmentally friendly method for repairing cracks in concrete. To improve on this ability of microbial materials concrete repair, we applied random mutagenesis and optimization of mineralization conditions to improve the quantity and crystal form of microbially precipitated calcium carbonate. Sporosarcina pasteurii ATCC 11859 was used as the starting strain to obtain the mutant with high urease activity by atmospheric and room temperature plasma (ARTP) mutagenesis. Next, we investigated the optimal biomineralization conditions and precipitation crystal form using Plackett-Burman experimental design and response surface methodology (RSM). Biomineralization with 0.73 mol/l calcium chloride, 45 g/l urea, reaction temperature of 45℃, and reaction time of 22 h, significantly increased the amount of precipitated calcium carbonate, which was deposited in the form of calcite crystals. Finally, the repair of concrete using the optimized biomineralization process was evaluated. A comparison of water absorption and adhesion of concrete specimens before and after repairs showed that concrete cracks and surface defects could be efficiently repaired. This study provides a new method to engineer biocementing material for concrete repair.