• Knowledge Management Research
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• v.25 no.1
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• pp.217-233
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• 2024

The demand for two-wheelers has increased in recent years, driven by the growing delivery culture, which has also led to a rise in the number of two-wheelers. Although two-wheelers are economically efficient in congested traffic conditions, reckless driving and ambiguous traffic laws for two-wheelers have turned two-wheeler accidents into a significant social issue. Given the high fatality rate associated with two-wheelers, the severity and risk of two-wheeler accidents are considerable. It is, therefore, crucial to thoroughly understand the characteristics of two-wheeler accidents by analyzing their attributes. In this study, the characteristics of two-wheeled vehicle accidents were categorized using the K-prototypes algorithm, based on data from two-wheeled vehicle accidents. As a result, the accidents were divided into four clusters according to their characteristics. Each cluster showed distinct traits in terms of the roads where accidents occurred, the major laws violated, the types of accidents, and the times of accident occurrences. By tailoring enforcement methods and regulations to the specific characteristics of each type of accident, we can reduce the incidence of accidents involving two-wheelers in metropolitan areas, thereby enhancing road safety. Furthermore, by applying machine learning techniques to urban transportation and safety, this study adds to the body of related literature.

• Journal of the Korean Society of Hazard Mitigation
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• v.8 no.4
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• pp.31-38
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• 2008

Under the recent situation that there increase the efforts to facilitate DFS(driver feedback sign) in school zones and children's protection areas caused by severity of traffic impact on children, the current study aims at predictively evaluating how and to what extent the reduced car speed is influential to the reduction of traffic accidents in elementary schools located in Buchon city by analyzing the velocity variation before and after DFS installation including its reduction ratio in traffic accidents as well as related literature survey. It, furthermore, aims at identifying applicable effectiveness in DFS operation for elementary schoolers in Buchon based on the data collected.

• Fire Science and Engineering
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• v.15 no.1
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• pp.84-92
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• 2001

In today's world, rise in the establishment of social infrastructure resulting from population saturation in large cities has led to more extensive and frequent use of chemical materials on facilities. A result, unexpected and serious accidents, hazards, contingencies and disasters are more prevalent than ever. Such phenomenon calls for more devoted and concerted efforts towards finding ways to reduce the safety hazards that are seen to take place more often than before with the increase in the number of facilities that are prone to bring disaster and hazard coupled with the conventional safety problems that continue to exist even today. In developed countries, such challenge is addressed by various appropriate countermeasures drawn up by local professional committees on industrial facilities, whose members conduct offsite and onsite evaluation un the potential industrial disasters and its seriousness and provide their advice thereof. Against this backdrop, this study aims at identifying a comprehensive safety allowance level (safety acceptable level) when imposing limitation on the development of conventional or new facilities, for the fur pose of establishing a safety allowance level of disastrous and dangerous facilities in Korea. This is done by assessing and applying the level of danger each individual is exposed to in a randomly selected region (disastrous and dangerous areas in Seoul) based on probability of quantitative hazards, as well as simulation and calculation methods which include: i) social disaster evaluation method applying Quantified Risk Assessment of Health & Safety Executive of UK and Matrix of Risk of Evaluated Sources of Hazard; ii) Fault Tree or Event Tree Analysis and etc.

• Fire Science and Engineering
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• v.29 no.5
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• pp.73-78
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• 2015

Since the hydrofluoric acid spill accident in Gumi in 2012, the current situation has continued to suffer from makeshift responses or feeble national system maintenance in preparing real countermeasures against chemical accidents, regardless of their repeated occurrence and seriousness. Industrial chemical accidents have an enormous ripple effect on the whole country and society. The purpose of this study is to propose ways of establishing directions for the national disaster management system against repeated occurrence of chemical accidents. To achieve this goal, the present study proposed improvement measures of response system for industrial chemical accident through the analysis of the current response system and structural causes of disaster control failure for chemical accidents.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.730-732
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• 2011

최근 전 세계적으로 스마트폰의 열풍이 거세게 불고 있다. 본격적으로 출시된 지 얼마 되지 않은 스마트폰이 이렇게 인기를 끌게 된 원인을 분석하고, 스마트폰의 가장 큰 문제점인 보안 사고의 심각성과 원인, 해결 방안에 대해 연구한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.11a
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• pp.1311-1313
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• 2008

최근 2005년 기준으로 우리나라 어린이 교통사고율은 OECD 국가 총 28개국 나라 중 3위을 차지할 만큼 높다. 그 심각성에 입각하여 도로에서 어린이들을 안전하게 보호해야 한다는 여론이 점차 많이 제기되고 있다. 이에 대한 해결책으로 각 학교나 관계 당국은 어린이의 교통 안전 교육을 강조하고 안전 시설을 마련하고 있지만, 어린이가 돌발 상황을 인지하고, 대처하는 데에는 한계가 있다. 본 연구는 센서 네트워크를 이용한 위치 인식 기술을 활용하여 공원과 같은 공공 장소에서 어린이들이 예고없이 나올 경우 운전자에게 돌발 상황을 미리 경고해 어린이의 안전을 도모하여 교통사고의 예방을 돕는 시스템을 제안한다.

• Convergence Security Journal
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• v.16 no.7
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• pp.51-59
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• 2016

An internal and external threat against an information system has increased, and to reduce it, organization has spent a great deal of money and manpower. However, in spite of such investment, security threat and trouble have happened continuously. Organization has conducted information security activity through various policies. The study classified such activities into prevention-oriented activity and control-oriented activity, and researched how information security activity of organization affects members of an organization and obeys information security policy by using health belief model. As a result of the study, prevention-oriented activity has a meaningful impact on seriousness, and this seriousness affects compliance intention for information security. Control-oriented activity has a meaningful impact on benefits, and the benefits have an effect on compliance intention. When an organization conducts prior activities such as education, PR, and monitoring, this organization should emphasize negative results that can happened because of deviation. In addition, in case of exposure and punishment through post activities such as inspection and punishment, if the organization emphasizes the positive effects of exposure and punishment rather than emphasis of negative parts, information security activity will be more effective.

• Journal of the Korea Society of Computer and Information
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• v.6 no.1
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• pp.14-24
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• 2001

The huge and complicated plants such as nuclear power stations are likely to cause the operators to make mistakes due to a variety of inexplicable reasons and symptoms in case of emergency. Thats why the prevention system assisting the operators is being developed for. First of all. I suggest an improved fuzzy diagnosis. Secondly. I want to demonstrate that a classification system of nuclear plants accident investigating the causes of accidents foresees possible problems. and maintains the reliability of the diagnostic reports in spite of improper working in part. In the event of emergency in a nuclear plant, a lot of operational steps enable the operators to find out what caused the problems based on an emergent operating plan. Our system is able to classify their types within twenty to thirty seconds. As so, we expect the system to put don the accidents right after the rapid detection of the damage control-method concerned.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.35 no.4
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• pp.439-445
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• 2011

Forensic Engineering is the art and science of professionals qualified to serve as engineering experts in courts of law or in arbitration proceedings. Buses using compressed natural gas (CNG) trend to be extended in use internationally as optimal counterplan for reducing discharge gas of light oil due to high concern about environment. However, CNG buses have to be equipped with composite pressure vessels (CPVs); since the CPVs contain compressed natural gas, the risks in the case of accident is very high. Hence, the investigation of such accidents is usually associated with engineering analysis. Among the possible reasons for such CNG explosion accidents is vehicle fire and vessel fracture. By conducting formal inspection and engineering tests, in this study, the cause of vessel explosion is investigated by analyzing the failure mechanism by fractography and by comparing the material properties of a reference part with those of a problem part by adopting instrumented indentation technique.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.34 no.11
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• pp.1727-1732
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• 2010

Forensic engineering is the area of expertise of people qualified to serve as engineering experts in courts of law or during arbitration proceedings. An aerial-lifter can lift and carry load, including people, using power. Recently, failure of aerial-lifter internal parts while working and sweeping causing injuries and damage to property almost always generates conflict between the automaker and customer. Hence, the investigation of such events generally involves an engineering analysis. One of the possible reasons for accidents, such as a vehicle catching fire is the failure of oil pressure machine and the supporting pin. The results of formal inspections and engineering tests can reveal the cause for the failure of the mechanical parts. Therefore, the failure mechanism is analyzed by adopting fractography methods and by applying an instrumented indentation technique to compare the material properties of the reference part with those of the malfunctioning part.