The purpose of this study is to explore how adolescents' psychological characteristics affect their sense of life safety according to gender. To this end, a survey was conducted on male and female high school students in six schools in the C area, and a total of 1,048 data were used for analysis. Differences in major variables according to gender were verified, and the effect of psychological characteristics on living safety awareness was analyzed through hierarchical multiple regression analysis. As a result of the analysis, depression, anxiety, type A characteristics, and the presence or absence of experience in accidents did not significantly affect life safety awareness in the male student group. On the other hand, in the female student group, anxiety and type A characteristics had a significant effect on life safety awareness. Anxiety negatively affects living safety awareness, and type A characteristics have been shown to have a positive effect on living safety awareness. The presence or absence of depression and accident experience did not significantly affect life safety awareness. The results of these studies suggest that gender differences should be considered in education to prevent life safety awareness and that education that reflects the psychological characteristics of adolescents is necessary.

본 연구는 초등학생의 학습·사회성 부진에 영향을 미치는 요인을 분석하여, 부모 관계에 따른 아동기 심리적 안전감의 중요성을 밝히기 위한 연구이다. I시 J구의 초등학교 학부모 대상 안전 인 식 조사에서 주관적 건강, 성격 특성, 대인 관계, 정서·행동 특성의 심리적 안전감과 학교폭력 피 해 및 부모 관계를 통해 학습·사회성 부진의 영향요인을 분석하였다. 자료의 분석은 t-검증과 ANOVA를 활용하여 일반적 특성에 따른 차이를. 다중회귀분석으로 학습·사회성 부진의 영향요인을, 교차분석과 로지스틱 회귀분석으로 학습·사회성 부진의 위험도를 분석하였다. 분석의 결과는 첫째, 여아의 과민·반항성이 높았고, 6학년 아동의 개방성이 낮게 나타났으며, 부모의 학력이 높을수록 주관적 건강과 학교폭력 피해 인식이 높고, 월 300만 원대의 소득수준에서 학습·사회성 부진이 높 다. 둘째, 학습·사회성 부진의 영향요인으로 긍정적 관계에서는 불안·우울과 학교폭력 피해 경험으 로, 부정적 관계에서는 집중력과 불안·우울로 나타났다. 셋째, 학습·사회성 부진 위험도에 유의한 영향을 미치는 요인은 사회적 주도성, 불안·우울과 집중력 부진, 소득수준, 타인 이해, 공동체 의 식으로 나타나고 있다. 아동의 학습·사회성 부진은 불안·우울, 집중력 부진과 높은 상관성이 있고, 부정적 부모 관계에서 높은 영향을 받는다. 따라서 아동의 학습·사회성 향상을 위해서는 긍정적 부 모 관계와 심리적 안전감의 확보가 중요하다.

This study aimed to verify the validity of the evaluation items and weight determination of the indoor environmental safety area, which has the most frequent accidents, among the safety certification evaluations of educational facilities by the Ministry of Education of the Republic of Korea, which has been conducted since May 2021. As a preceding study, the evaluation items of the school safety evaluation checklist being implemented in the US state of Vermont were compared, and the causes of accidents judged by teachers in the accident experiences written by 200 Korean teachers were compared with the safety certification evaluation items belonged to the Ministry of Education. In addition, research literature using the AHP analysis technique on safety risks of elementary and secondary schools in China and safety evaluation index study cases of 539 elementary school children in Indonesia were analyzed. Through these preceding studies, measures to add and adjust evaluation items were derived and the validity and importance rankings of evaluation items were calculated through AHP questionnaires to teachers and safety experts. In addition, a survey was conducted on 104 ordinary people to verify the results of expert analysis. As a result of expert AHP analysis, 'safety education and disaster response training (.396)' was the highest priority for the relative importance of the first layer, followed by 'safety measures (.387)' and 'building materials'. Safety (.216)' was found to be the highest priority. In the overall importance ranking of the 13 second-tier screening items, safety accident prevention education had the highest priority and disaster preparedness training ranked second, proving that the Ministry of Education's review weight was underestimated. In addition, slip and collision accident countermeasures, which were not in the existing Ministry of Education review items, ranked 4th, laboratory practice room safety measures ranked 6th, and sanitation, cleanliness, hazardous substance management, and cafeteria/cooking room safety measures ranked 9th, indicating a significant level of importance. Referring to the importance ranking, which is the result of this study, it is suggested that it is necessary to review the weight of each review item again.

The Severe Disaster Punishment Act had recently been established in order to promote safety and health (OSH) management system for severe accident prevention. OSH management system is primarily designed based on risk assessments; however, companies in industries have been experiencing difficulties in hazard identification and selecting proper measures for risk assessments and accident prevention. This study intended to introduce an accident analysis method based on epidemiological model in finding hazard and preventive measures. The accident analysis method employed in this study was proposed by the U.S. Department of Energy. To demonstrate the effectiveness of the accident analysis method, this study applied it to two accident cases occurred in construction and manufacturing industries. The application process and results of this study can be utilized in improving OSH management system and preventing severe accidents.

이􀀁 논문에서는􀀁 회귀분석,􀀁 VAR,􀀁 Lasso,􀀁 XGBoost􀀁 등􀀁 4가지􀀁 통계􀀁 기법을􀀁 이용하여􀀁 비트 코인과􀀁 금융시장과의􀀁 상호연관성의􀀁 정도를􀀁 밝혀􀀁 비트코인이􀀁 더􀀁 이상􀀁 안전자산이􀀁 아님을􀀁 보였다.􀀁 회귀분석에서는􀀁 비트코인의􀀁 24시간􀀁 시간별􀀁 데이터를􀀁 이용하여􀀁 미국주식시장􀀁 개장 시간대와􀀁 휴장시간대를􀀁 비교하여􀀁 비트코인의􀀁 거래량과􀀁 가격의􀀁 변동성이􀀁 통계적으로􀀁 유의 미하게􀀁 증가하는지를􀀁 분석한􀀁 결과,􀀁 미국증시􀀁 개장시간대(09:30-16:00)에􀀁 그􀀁 외의􀀁 시간대 에􀀁 비해􀀁 비트코인의􀀁 거래량은􀀁 22%,􀀁 가격변동성은􀀁 8.3%􀀁 증가하는􀀁 것으로􀀁 나타났다.􀀁 또 한􀀁 비트코인의􀀁 주별􀀁 자료를􀀁 이용하여􀀁 다양한􀀁 주식시장􀀁 지수들이􀀁 시차를􀀁 두고􀀁 비트코인􀀁 수 익률(가격증가율)과􀀁 변동성에􀀁 어떤􀀁 영향을􀀁 미치는지를􀀁 VAR􀀁 분석한􀀁 결과,􀀁 연방기준금리가􀀁 가장􀀁 직접적으로􀀁 영향을􀀁 미치는􀀁 것으로􀀁 나타났다.􀀁 한편􀀁 Lasso를􀀁 이용한􀀁 비트코인과􀀁 주요􀀁 시장의􀀁 지수들과의􀀁 상관관계의􀀁 방향성􀀁 분석에서는􀀁 비트코인의􀀁 수익률과􀀁 변동성이􀀁 금융시 장􀀁 지수들과􀀁 정확히􀀁 같은􀀁 방향으로􀀁 움직이는􀀁 것으로􀀁 나타났다.􀀁 마지막으로􀀁 XGBoost를􀀁 이 용한􀀁 분석에서는􀀁 비트코인􀀁 수익률과􀀁 변동성을􀀁 예측하는데􀀁 가장􀀁 강력한􀀁 예측변수들은􀀁 미국􀀁 주식시장의􀀁 S&P􀀁 500􀀁 지수,􀀁 나스닥􀀁 지수,􀀁 다우존스􀀁 변동성지수인􀀁 것으로􀀁 나타났다.􀀁 다양 한􀀁 계량분석􀀁 결과,􀀁 비트코인은􀀁 미국􀀁 금리와􀀁 미국􀀁 주가􀀁 움직임에􀀁 매우􀀁 민감하게􀀁 반응하고􀀁 정확히􀀁 같은􀀁 방향으로􀀁 움직여􀀁 더􀀁 이상􀀁 안전자산이􀀁 아님을􀀁 밝혔다.􀀁

PURPOSES : This study aims to analyze the efficiency of the safety and management of private highways. METHODS : Variables were selected based on the data and performance related to the safety of 18 private highways. The appropriateness of operations management was reviewed using Data Envelopment Analysis (DEA) analysis. Items with a scope for improvement were reviewed and adjustment measures were presented. RESULTS : To increase safety management efficiency, the degree of reduction in personnel and operating expenses was presented based on the relative efficiency group. CONCLUSIONS : It is necessary to adjust the appropriate management organization and operating costs according to the characteristics of each route. Moreover, the limitations of the study and possible improvements were presented.

PURPOSES : This study aims to evaluate the traffic safety by collecting and analyzing vehicle speed and conflict frequency data based on the provision of information to vehicle drivers and crosswalk pedestrians under right-turn conditions. METHODS : Two evaluation scales, namely speed of access and number of conflicts, were used to quantitatively evaluate the effects of the new information provision method. Data on access speed and the number of conflicts according to information provision were collected and compared before and after information provision. RESULTS : Analysis of the pre- and post-spot speed reduction rates revealed an overall reduction rate of 32.6%. The conflict ratio was 81.0% before information provision but increased to 83.3% after information provision. CONCLUSIONS : When LED display information was provided, the effect of decelerating the approaching speed of vehicles in the rightturn torpedo section was statistically significant, but the reduction in the conflict ratio was not. Factors such as intersection status, traffic volume and vehicle speed, affect the approach speed and increase or decrease the number of conflicts. Regardless of whether information is provided, the average compliance rate of the Road Traffic Act when turning right in the channelization area is 16.7%, which is significantly different from the average compliance rate of 48.4% immediately after the Road Traffic Act was revised in July 2022.

Although it is highly dependent on the production of coastal and offshore fishing, the Fishing Vessels Safety Fisheries Act was enacted in 2019 due to the continuous increase in marine accidents of coastal and offshore fishing vessels. However, the law is too focused on fishing and navigation in certain waters and does not contain accident-preventive content. Ministry of Oceans and Fisheries proposes a plan to revise the Fishing Boat Safety Fishing Act through legal comparison with Japan's Seafarers' Labor Sanitation Rules. It also proposes an amendment that includes the content of the Seafarers Act on post-accident action obligations. Under the Fishing Vessels Safety Fishing Act, the safety fishing education is implemented for specific people and adopts a method of delivery education after completing the education. The reason for this is that the educational requirements are not sufficient compared to the number of education personnel. Moreover, four hours of education are conducted once a year, which is not suitable for insufficient educational conditions. For efficient safety fishing education, improvement measures are proposed compared to education in the United States and the United Kingdom.

This study investigated the hazard factors based on imported food non-compliance and global food hazard information for the last 4 years to suggest imported food safety management. Food safety management on utensils or packaging containers is appropriately managed for the compounds derived from them. Food safety management on health-functional foods, processed foods, and agricultural products is concentrated on ingredient contents, food additives, and pesticide residuals. Additional hazards are illegal compounds, mycotoxins & pesticide residuals, hygieneindicator microorganisms and food-borne pathogens in health-functional foods, processed foods, and agricultural products, respectively. The continuous increase in hazards related to safety and hygiene in global food hazard information needs additional attention. To reduce the hazard factors, this study proposes that imported food be limited to products certified by HACCP or an equivalent food safety management system because registering foreign food facilities for processed and health-functional foods is mandatory. Additionally, the customs clearance inspections should focus on the hazard factors derived from the global food hazard information system. This study suggests a global food hazard information system that could derive frequently issued hazard factors at a given period and newly issued hazard factors in aspects, such as food items, subcategories, and exporting countries.

This study deals with improvement plans and application results to improve the safety of secondary batteries and chargers applied to Tactical Multi-band Multi-role Radio(TMMR), a new military communication equipment. Due to the nature of the portable weapon system, the terminal structure and manufacturing process of the battery and charger were improved to strengthen resistance to vibration and shock generated during movement, and the battery structure was partially changed to secure resistance to mechanical shock generated when the charger was coupled. In addition, retrospective application was completed for all secondary batteries and chargers previously delivered for TMMR, helping the Korean military to operate next-generation radios in a safer environment.

The need for an intelligent information-based ship accident prevention and control system for various marine accidents is very clearly emerging. As it is a variety of marine accidents, the causes are diverse. Therefore, it can be said that it is very important to prevent these marine accidents and their causes in advance. Therefore, a study was conducted on an intelligent information-based ship safety management decision support system that provides information necessary for decision-making at sea and land through an integrated management device for ships that informs safety-related risks in real-time ship operation. In the future, we intend to pursue the development of a system that can aim for safer and more economical ship operation by linking it to navigation instruments through the evaluation and analysis of AI, IoT, and big data.

국내외 매년 지속적으로 증가하는 대기오염의 상당량이 선박에서 배출되고 있으며, 이러한 선박에서의 배출량을 감축하기 위 해 정부는 환경규제를 강화하고 해양대기환경 개선을 위해 「환경친화적 선박의 개발 및 보급 촉진에 관한 법률」을 제정 및 시행하여 친환경 에너지를 동력원으로 사용하는 환경친화적 선박을 보급하여 해양오염 저감 기술이 개발되도록 하고 있다. 환경친화적 선박의 기 술은 최근 순수 전기추진 내지는 전기복합 추진체계까지 진화하고 있으나, 선박의 안전한 운용을 위한 검사 및 설비기준 등 관련제도의 정비는 이를 못 따라가는 실정으로, 특히 국내 연안선박의 다수를 차지하는 어선에 대한 제도는 정비가 시급한 시점이다. 이번 연구를 통 해 어선에의 전기복합 추진체계 등의 적용을 위해 핵심기자재인 배터리, 전력변환장치 등을 정의하고 이에 필요한 안전기준을 진단, 마련 하여 친환경 어선의 도입과 보급을 위해 관련된 산업을 지원할 수 있도록 최소한의 안전기준안을 마련하고자 한다.

In this study, computer simulation of the drawbridge structure was performed to verify the validity of the design and to evaluate its safety. For this, the follower bracket was modeled, and the parts of the follower bracket were connected using 1D elements. The boundary condition applied moments to the rotation shaft of the girder gear in the clockwise and counterclockwise directions, and the connection between the upper parts was modeled using 1D elements to model the bolted connection. In case of rotational shaft deformation, an analysis was performed on the displacement occurring in the structure during the opening/closing operation. As a result of structural analysis of the follower bracket for various cases, the stress at the connection was lower than the tensile strength and yield strength, so it was evaluated as safe. Through this, we intend to use it as a data that can identify anomalies.

기상불량으로 인해 발생하고 있는 해양사고 중 해무 발생에 따른 시계제한은 선박의 좌초, 선저 파손 등의 사고를 유발하는 것과 동시에 사고에 따른 인명피해를 동시에 수반하고 있으며 이는 매년 지속적으로 발생하고 있다. 또한 해상에서의 저시정은 지역간 국소적으로 차이가 존재하는 경우에도 일괄적으로 여객선에 대한 운항 지연 및 통제 조치를 하고 있어 섬주민들의 교통수단 이용에 상당 한 불편을 초래하는 등의 사회적 문제로 대두되고 있다. 더욱이 이와 같은 조치는 지역적 편차나 사람마다 관측의 판단 기준이 상이하여 이를 객관적으로 정량화하지 못하고 있어 더욱 문제가 심화되고 있는 실정이다. 현재 각 항만의 VTS에서는 시정거리가 1km 미만인 경우 선박의 운항을 통제하고 있으며, 이 경우 저시정에 따른 해무 가시거리를 시정계 혹은 육안에 의한 목측(目測)에 의존하고 있을 정도로 객관적인 데이터 수집을 통한 평가에 있어서는 한계가 있다. 정부에서는 이와 같은 해양교통안전 저해요소를 해결하기 위한 일환으로 해 무 탐지 및 예측을 위한 해양기상신호표지 및 해상안개관측망을 구축하여 운용하고 있으나, 국지적으로 발생하는 해무를 관측하기 위한 시스템은 매우 부족한 현실적 어려움에 놓여있다. 이에 따라 본 논문에서는 해상에서의 저시정으로 인해 발생하고 있는 여러 사회적 문 제를 해결하기 위한 국내․외 정책동향에 대해 살펴보고, 이와 관련한 일반국민 및 현장 이해관계자의 인식 정도를 조사․분석하여 해무 에 따른 해상교통안전을 확보하기 위한 정부지원(해무 탐지 및 예측 기술을 기반으로 한 해상교통운영 체계 개발 등)의 필요성에 대한 기 초자료를 제공하고자 한다. 또한 이는 궁극적으로 해무로 인해 발생할 수 있는 해상안전 위험요소를 사전에 차단함으로써 보다 안정된 해상교통운영체계를 마련하는데 그 목적을 두고 있다.