• Journal of Advanced Marine Engineering and Technology
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• 제13권1호
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• pp.77-96
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• 1989

In diesel engines, it is inevitable that the torsional vibration is produced by the fluctuation of engine torque. Therefore, if the occurence of torsional vibration is confirmed in the design stage or the torsional vibration is observed on the bed of test run, it is necessary to establish some preventive measures to avoid dangerous conditions. Major preventive measures are as follows : 1. Changing the natural frequency of shaft system. 2. Repressing the vibration amplitude by the damping energy. 3. Counterbalancing the exciting torque by the resistant torque. 4. Counterbalacing the harmonic component of exciting energy. In above methos, the damper is the last measure to be used for controlling the torsional vibration. In this thesis, the design of viscous damper that absorbs the exciting energy is investigated and a number of problems associated with the design of viscous damper are treated and a computer pregram for the process of damper design is developed. A viscous damper for a high speed diesel engine is designed and its effect is simulated by the author's computer program.

• Current Research on Agriculture and Life Sciences
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• 제15권
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• pp.39-46
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• 1997

In 1996, a cold-water damage occured in the paddy field at the downstream of the Umoon dam. To study the cause and the preventive measures of the cold-water damage a field study was performed during the growing season of 1997. Field measurements such as water temperatures at reservoir, irrigation canal and in the paddy field were made. As a result, there was no cold-water damage due to the right irrigation water management practice in 1997. The cold-water damage is possible to happen, however, and the preventive measures were provided.

• 대한치과의사협회지
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• 제52권5호
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• pp.264-272
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• 2014

Maxillary canine is the most common impacted tooth except third molars. In Asian populations, labial impaction is more common than palatal impaction, but palatal impaction is three times more common than labial impaction in Caucasion. The incidence of maxillary canine impaction is known as 1~3%, and 12% of these cases are involved in the root resorption of the adjacent lateral incisor. In children, early diagnosis is important to prevent the impaction of maxillary canine through clinical and radiographic examinations. In addition, preventive measures should be considered at the proper time. These measures include the removal of deciduous canines and the expansion of the maxillary arch.

• Journal of Preventive Medicine and Public Health
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• 제11권1호
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• pp.110-122
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• 1978

A study on the morbidity of syphilis among 729 workers in Po Hang and Ul San Industiral Complexes at the routine periodical examination was performed. In addition to the morbidity, factors related to the disease infection such as educational level, religion, preventive measures taken by the workers, history of urethritis, and so on were studied and analysed to check significant relation. The results were as follows: 1. VDRL and RPR tests were undertaken to determine the sensitivity and specificity of RPR test which was utilized for all the workers studied. It revealed 86.4% of sensitivity and 87.7% of specificity from RPR test, and 81.8% of sensitivity and 90.1% of specificity from the VDRL test compared with RPCF test. There were 87.4% of agreement rate between RPR and VDRL. Actually, RPR was more sensitive but less specific than VDRL, and found to be a satisfactory screening test for syphilis especially in the fields. 2. Among the workers in Po Hang Area 24.0% of them revealed reactive result, and in Ul San Area 5.2% revealed reactive result showing 4.6 times of risk among workers in Po Hang Area. 3. There were no statistically significant differences between RPR reactive rates and personal characteristics such as educational level, religion, history of urethritis experience, history of coitus with prostitute, and preventive measures of V.D. taken by workers if evaluated by area of Po Hang and Ul Srn separately. 4. V.D. could be encountered as an occupational disease in certain conditions of working places and the psychosocial problems of workers. And so, it is necessary that all the workers working in special estates such as in Po Hang Industrial Complex should be checked to be screened out by RPR test at periodical examinations and part of pre-employment examination also should include RPR test to be compared with. Regardless of the workmen's compensation, establishment of V.D. treatment clinic or system for such industrial workers is urgently needed. Health education regarding V.D. is another subject to be performed.

• 한국컴퓨터정보학회논문지
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• 제24권5호
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• pp.171-177
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• 2019

In this paper, we analyze the current phenomenon of child abuse crimes based on the information gathered by the National Child Protection Agency. The purpose of this paper is to diagnose the seriousness of child abuse by biological parents based on the analyzed information and propose measures against it. Comprehensive and integrated measures are needed for child abuse committed by biological parents due to abuse concealment, continuity of damage, and inactive national intervention by considering punishment on attackers through national intervention, fundamental in-depth psychological counseling, therapeutic care, promoting recovery of victims, and ultimately continuous and regular management and monitoring as a long-terms measure. To do so, developing customized and individual educational programs and make them obligations can be first presented to identify child abuse in advance and build up preventive systems based on the principle of family preservation. In addition, problems should be addressed at a fundamental level by performing various and active therapeutic treatments such as psychological treatment, mental treatment, or drug treatment gradually and through phases for biological parents who commit child abuse and contributing to recovering the relationship. Furthermore, proper protection and treatment service should be provided to children victimized by abuse by extending professional children care facilities and adopting the professional family commission system as measures by separating family.

• Safety and Health at Work
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• 제10권1호
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• pp.21-29
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• 2019

Background: Promoting healthy lifestyles at work should complement workplace safety programs. This study systematically investigates current states of occupational health and safety (OHS) policy as well as practice in the European Union (EU). Methods: OHS policies of EU member states were categorized as either prevention or health promotion provisions using a manifest content analysis. Policy rankings were then created for each prevention and promotion. Rankings compared eight indicators from the European Survey of Enterprises on New and Emerging Risks-2 data on prevention and promotion practices for each member state using Chi-square and probit regression analyses. Results: Overall, 73.1% of EU establishments take preventive measures against direct physical harm, and about 35.4% take measures to prevent psychosocial risks. Merely 29.5% have measures to promote health. Weak and inconsistent links between OHS policy and practice indicators were identified. Conclusion: National OHS policies evidently concentrate on prevention while compliance with health and safety practices is relatively low. Psychosocial risks are often addressed in national policy but not implemented by institutions. Current risk assessment methods are outdated and often lack psychosocial indicators. Health promotion at work is rare in policy and practice, and its interpretation remains preventive. Member states need to adopt policies that actively improve health and well-being at the workplace.

• Safety and Health at Work
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• 제13권3호
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• pp.350-356
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• 2022

Background: Although sick leave is a complex phenomenon, it is believed that there is potential for prevention at the workplace. However, little is known about this potential and what specific measures should be implemented. The purpose of the study was to identify perceived reasons to take work-related sick leave and to suggest preventive measures. The study was completed before the COVID-19 pandemic emerged, and the risk factors identified may have been amplified during the pandemic. Methods: An in-depth cross-sectional survey was conducted across a randomly selected sample of hospital nurses in Norway. The national sample comprised 1,297 nurses who participated in a survey about their sick leave during the previous 6 months. An open-ended question about perceived reasons for work-related sick leave was included to gather qualitative information. Results: Among hospital nurses, 27% of the last occurring sick leave incidents were perceived to be work-related. The most common reasons were high physical workload, high work pace, sleep problems, catching a viral or bacterial infection from patients or colleagues, and low staffing. Conclusions: Over a quarter of the last occurring sick leave incidents among Norwegian hospital nurses are potentially preventable. To retain and optimize scarce hospital nursing resources, strategies to reduce work-related sick leave may provide human and financial benefits. Preventive measures may include careful monitoring of nurses' workload and pace, optimizing work schedules to reduce the risk of sleep problems, and increasing staffing to prevent stress and work overload.

• 한국재난정보학회 논문집
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• 제20권1호
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• pp.13-19
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• 2024

연구목적: 본 연구는 텍스트 마이닝 기법을 활용하여 유형별 건설재해의 원인을 도출하여 중대재해 사고의 예방대책 마련을 위한 주요 요소를 파악하는 것을 목적으로 한다. 연구방법: 국내 건설분야의 중대재해 사례를 분석한 데이터베이스를 기반으로 예방대책과 원인을 텍스트 마이닝 기법으로 분석하고, 분석 내용을 시각적으로 표현하였다. 연구결과: 이 시각적 데이터는 중요도에 따라 공종별 중대 재해 예방에 필요한 요소의 파악을 용이하게 한다. 결론: 본 연구의 결과는 건설현장 중대재해와 관련하여 예방대책 마련 시 고려되어야 할 요소 및 요소간 명확한 상관관계의 파악에 기여할 것으로 사료된다.

• 대한안전경영과학회지
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• 제26권2호
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• pp.1-10
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• 2024

Human stampedes were a major hazard that could occur during mass gatherings, but they have received limited attention in korea. However, after the 10.29 Itaewon disaster, this atmosphere has turned around. The cause of such an accident and how to prevent it should be considered. The main aim of this study is to identify the reason why did the accident happen at that time, the root cause, and the triggering cause with Delphi-AHP survey method. In addition, various preventive measures were investigated by experts to prevent accidents similar to 10.29 Itaewon disaster. Problems and solutions were presented by collecting expert opinions on the causes and preventive measures of the 10.29 Itaewon disaster. However, the opinion of the experienced peoples who experienced the risk at the Itaewon was not included, so further investigation is considered necessary.

• 한국정보컨버전스학회논문지
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• 제7권1호
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• pp.25-46
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• 2014

본 연구에서는 금융기관에서 발생하는 금융사고의 발생현황 및 발생원인을 살펴보고, 국내 및 외국의 금융사고 사례, 현재시점에서 금융사고 예방을 위한 활동에 대하여 살펴보고 앞으로 금융기관들이 금융사고에 어떻게 대처해 나아가야할지에 대한 방안을 제시하였다. 이 방안을 제시하면서 금융사고 발생 전 예방활동, 금융기관 정상영업 중 예방활동, 금융사고 후 활동으로 나누어 제시하였다. 그 내용은 다음과 같다. 1. 금융사고 발생 전 예방활동을 강화해야 한다. 이를 위해서는 첫째, 지속적인 내부통제를 위한 강화가 필요하다. 둘째, 금융사고의 개연성을 미리 차단할 수 있는 직원 윤리교육과 내부 제보자에 대한 포상제도가 확대 운영되어야 한다. 셋째, 금융사고 피해금액을 보전하기 위한 종합보험에 가입하여야 한다. 2. 금융기관 정상영업 기간 중 예방활동을 강화해야 한다. 이를 위해서는 첫째, 거래고객에 대한 본인인증 제도를 도입 운영하여야 한다. 둘째, 일 거래/주 거래/월 거래 등에 대한 대사 및 감시기구 확대 운영하여야 한다. 셋째, 금융사고 예방 등을 위한 대고객 문자통보서비스를 확대 운영하여야 한다. 넷째, 금융사고 정보고시제도를 확대하여 운영하여야 한다. 3. 금융사고 후 활동을 강화해야 한다. 첫째, 경영진에 대한 책임 부과 등을 통한 사고예방 인식을 제고 시켜야 한다. 둘째, 금융사고자에 대한 형사고발 등 제재를 강화하여야 한다. 셋째, 금융사고 금액은 반드시 전액을 환수할 수 있는 법 제도적인 장치와 결의가 있어야 한다.