본 연구는 국내 대기업 종사자를 대상으로 코칭리더십과 혁신행동의 관계에서 심리적 안전감의 매개 효과를 실증적으로 분석하고자 하였다. 이를 위해 자기결정성 이론을 기반으로 연구모형을 설정하고, 국 내 대기업에 재직 중인 근로자 461명의 데이터를 구조방정식 모델로 분석하였다. 연구 결과는 다음과 같 다. 첫째, 코칭리더십은 혁신행동에 유의한 직접효과를 나타냈다. 둘째, 코칭리더십은 심리적 안전감에 유 의한 정(+)의 영향을 미치는 것으로 확인되었다. 셋째, 심리적 안전감은 혁신행동에 유의한 정(+)의 영향 을 미치는 것으로 나타났다. 마지막으로, 심리적 안전감은 코칭리더십과 혁신행동 간 관계를 유의하게 매개하는 것으로 확인되었다. 본 연구는 코칭리더십, 심리적 안전감, 그리고 혁신행동 간의 관계를 심층적으 로 검증했다는 의의가 있다. 또한 이러한 과정을 자기결정성 이론의 관점으로 접근하여 리더십이 조직의 혁신을 촉진하는 과정을 다각도로 이해하는데 기여했다는 의의를 갖는다. 이러한 연구 결과를 바탕으로 실무적 시사점을 제시하고 본 연구의 한계점과 후속 연구에 대한 제언을 제시하였다.

This study evaluated the effectiveness of fire safety education in high school dormitories—high-density residential environments—by assessing both cognitive and behavioral changes. Pre- and post-surveys were combined with measurement of the Required Safe Egress Time (RSET), which recorded 264 seconds from alarm activation (T₀ + 0 sec) to final evacuation completion (T₀ + 264 sec). This enabled a quantitative analysis of behavioral improvement. Results revealed that academic performance and family background significantly influenced learning outcomes, whereas the “evacuation during fire” domain showed no statistically significant change, suggesting insufficient instructional content or delivery. Policy recommendations include customized fire safety programs reflecting learner characteristics, experiential evacuation drills, school–home safety integration, mandatory dormitory fire drills, and certification with best-practice dissemination. The findings offer a practical framework for enhancing fire safety education tailored to dormitory-based schools, contributing to improved preparedness, response capability, and student survival in real fire emergencies.

This study investigates the gap between statutory calculation standards and actual field conditions in estimating Occupational Safety and Health Management Expenses (OSHME) for large-scale construction projects. The current fixed-rate method, based on construction type and cost, fails to account for on-site factors such as project complexity, duration, and workforce structure, often leading to discrepancies between estimated and actual costs. To address this, data from 21 completed projects over KRW 5 billion were analyzed. Multiple regression analysis was conducted using variables including material and labor costs, project duration, floor area, number of floors, and the number of safety personnel. The results showed a significant statistical difference between calculated and actual OSHME, and the proposed model explained 95.3% of the variance (R2 = 0.953). Variable selection techniques were applied to improve prediction accuracy by addressing multicollinearity. The model offers practical value for early budgeting and supports policy improvements that align safety expenses with real on-site needs, in order to more effectively prevent industrial accidents.

In small and medium-sized enterprises and small service enterprises, environmental, social and governance(ESG) is perceived as an abstract and broad in perspective of management, and there is lack of specific methodologies to implement ESG management philosophy. Especially in safety-prioritized industries such as manufacturing, construction, and electricity where the Severe Disaster Punishment Act directly applied, many companies are studying which aspect should be emphasized to establish practical safety culture and system in the organization. This research suggests the evaluation items, using the Analytic Hierarchy Process(AHP), to settle the industrial safety and the safety culture that a small size enterprise executes ESG management.

본 연구는 보건관리자의 협력업체 보건관리 경험을 알아보기 위하여 수행되었다. 연구는 2023년 8월부터 2023년 11월까지 협력업체 보건관 리 경험이 있는 보건관리자 12명을 대상으로 하였다. 연구방법은 차마즈 (Chamaz 2006)의 구성주의 근거이론을 적용하여 실시하였으며, 이론적 표집방법을 통하여 최종 7개의 이론적 범주를 추출하였다. 보건관리자가 협력업체 보건관리를 하며 경험한 이론적 범주는 ‘강화된 제도속의 관리 불확실성’, ‘협력업체 자율관리 부재 및 관리의 역설’, ‘법적 책임과 권한 불균형’, ‘협력업체 보건관리의 난제들’, ‘업무과중과 잠재적 역할 제약’, ‘현장 기반 실천전략의 활용’, ‘효율 극대화를 위한 기술·정서 통합전략’ 이었다. 이러한 연구결과를 바탕으로 협력업체 보건관리를 위한 매뉴얼 의 확대보급 및 협력업체 규모와 특성을 고려한 보건관리자 배치 기준의 재검토, 협력업체 자율 안전보건관리 체계 마련을 위한 정부의 재정적, 관리적 지원이 필요할 것이다. 또한 대기업 보건관리와 다른 소규모 협 력업체의 특성에 대한 이해를 높이고 보건관리자 역량을 강화하기 위한 교육프로그램 개발도 필요할 것이다.

호문초연(虎門銷煙)은 중국 근대사의 중대한 역사적 사건으 로서, 중국인의 애국 의식을 일깨우고 중화 민족의 존엄과 이 익을 수호하였기에 모든 중국인이 마음에 새겨야 할 가치가 있 는 사건이다. 중국 창작 뮤지컬 <호문초연(虎門銷煙)>은 바로 이 역사적 사건을 배경으로 창작 및 각색되었으며, 임칙서(林則 徐)가 아편을 소각할 방법을 찾던 중 주인공 아충(阿忠) 및 수 많은 백성들과의 감정적 교류를 통해 최종적으로 아편을 성공 적으로 소각하는 이야기를 다루고 있다. <장사지인(將死之人)> 은 극 중 주인공 아충(阿忠)의 대표적인 가창곡으로, 이 작품은 심오하고 애절한 음악적 선율과 복잡하고 다변적인 조식 리듬 을 통해 평범한 영웅으로서 주인공 아충(阿忠)이 죽음을 앞둔 순간의 내면 독백과, 나아가 국가의 강대함과 안전을 위해 기 꺼이 헌신하려는 애국주의 정신, 그리고 강렬한 국가 정체성과 불굴의 민족 정신을 표현하고 있다. 본 논문은 뮤지컬 <호문초 연(虎門銷煙)>의 주인공 아충(阿忠)의 대표적인 가창곡 <장사 지인(將死之人)>을 연구 대상으로 삼아, 극 전체의 창작 배경 과 인물에 대해 간략히 설명한 후, 가창곡의 악곡 형식 구조, 선율 형태, 가사 측면에서의 음악적 특징을 분석하고, 필자 자 신의 가창 실천 및 공연 경험과 결합하여 호흡의 운용, 발음 처리, 혼성 가창의 세 가지 측면에서 가창 기교를 분석하며, 가 창 정서 및 감정 처리, 역할 설정 및 무대 공연 등과 결합하여 극 중 인물의 감정 표현을 파악함으로써 해당 작품을 더 잘 연 기하기 위한 일정한 이론적 지지와 학술적 참고를 제공하고자 한다.

본 연구는 속눈썹 미용 시술의 소비자 피해 양상과 이를 유발하는 제도적 한계를 규명하고, 자격 기준과 법제 분석을 중심으로 개선 방향을 제시하는 것을 목적으로 한다. 이를 위해 「공중위생관리법」, 국가기술자격제도, 시술 제품 안전관리, 소비 자 피해 구제 절차, 행정 단속 체계 등 시술 전 과정에 걸친 국내 법령 및 정책 환 경을 문헌 연구를 통해 분석하였다. 분석 결과, 현행 제도는 자격 기준의 불명확성, 위생관리 세부 규정 부재, 제품 안정성 관리 미흡, 피해 구제 절차의 한계, 행정 집 행 실효성 부족 등 다양한 취약성을 지니고 있는 것으로 나타났다. 이러한 제도적 허점은 무자격 시술, 비위생적 환경, 미인증 제품 사용 등으로 이어져 소비자 피해 를 지속적으로 발생시키는 구조를 형성하고 있다. 이에 따라 본 연구는 속눈썹 미용 시술의 특수성을 반영한 자격 기준 강화, 위생관리 규정의 세분화, 제품 안전성 관 리의 전 과정 관리, 전문 조정 절차를 포함한 피해 구제 제도의 개선, 단계적·차등적 규제 도입 등 정책적 시사점을 제언하였다. 본 연구는 기술적·미용학적 관점에 치중 한 기존 연구와 달리 법제·행정·시장 구조를 통합적으로 분석하였다는 점에서 의의 가 있으며, 후속 연구에서는 시술자·소비자·감독기관을 포함한 실증자료를 수집하고, 주요 해외 국가의 규제 모델과 비교함으로써 국내 제도의 국제적 정합성과 실효성을 높일 필요가 있다.

This study analyzed the prevalence and determinants of work-related musculoskeletal disorders (WMSDs) using domestic statistical data from 2007 to 2024. Over the past 18 years, the number of WMSD cases approved for industrial accident compensation increased by 110.6%, accounting for 60.3% of all occupational diseases, confirming it is a serious social issue. In this empirical study, we utilized crossanalysis and Pearson's Chi-squared test to examine the relationship between WMSD types and worker characteristics (gender, age) and workplace characteristics (industry, size). The analysis revealed a statistically significant difference in WMSD types based on the worker's gender, age, industry, and workplace size, confirming all hypotheses. Men had a higher proportion of diseases from "tasks imposing excessive physical burden," while women had a higher rate of "carpal tunnel syndrome". The incidence of disorders from physically demanding tasks was also higher with increasing age, in physically intensive sectors like manufacturing, construction, and mining, and in larger workplaces. These findings underscore the critical need for future WMSD prevention policies to be tailored by comprehensively considering both worker characteristics and the specific work environment. The results of this study provide valuable foundational data for establishing targeted and effective occupational health and safety policies, ultimately contributing to the reduction of industrial accidents and improving the well-being of workers.

The Pyrosim fire simulation program was used to investigate changes in operating time as a function of the attachment height of a fixed-temperature detector. Operating times were analyzed for detector heights ranging from 4 m to 7.5 m, in 0.5 m increments, within a 30 m2 space. The fire source was modeled as a wooden pallet 1.22 m in height, and a Type 1 fixed-temperature detector with an activation temperature of 67.9℃ was used. The simulation results showed that operating time increased progressively with detector height, rising from 155.7 seconds at 4m to 206.3 seconds at 7.5 m a maximum delay of 50.6 seconds. Notably, larger increases were observed in the 4 m ~ 4.5 m and 6 m ~ 6.5 m ranges 14.9 and 11.5 seconds, respectively than those observed in other intervals. This suggests that critical height ranges should be considered when establishing detector installation standards. This study found that current design standards may not ensure adequate detection performance in high-ceilinged structures. In warehouses and industrial facilities with ceilings of 6m or higher, such delays in detector activation could hinder early detection, indicating a need for improvements

This study quantitatively analyzed the effect of ceiling height on the response time of rate of rise heat detectors. A 7 m × 5 m simulation model was constructed using the PyroSim program, and scenarios were conducted by varying the installation height from 4.0 m to 7.5 m in 0.5 m increments. A wooden pallet fire source, placed at a height of 1.22 m, was simulated. The simulation results showed that as the installation height increased, the response time was delayed from 155.6 seconds to 204.6 seconds a difference of approximately 49 seconds. Meanwhile, the activation temperature decreased from 50.4 ℃ to 43.4 ℃, representing a drop of about 7 ℃. These findings indicate that in structures with higher ceilings, the responsiveness of detectors may be compromised due to the delayed arrival of hot air flows. Therefore, current height based installation standards in prescriptive design should be re-evaluated for high ceiling structures. Complementary design measures such as optimized placement, detector type selection, and increased installation density are recommended.

This study experimentally and numerically evaluated the fire risks and structural vulnerabilities of tunnel-type noise barriers (hereinafter referred to as hereinafter referred to as soundproof tunnels). In Korea, soundproof tunnels are typically constructed using combustible polymeric materials such as polymethyl methacrylate (PMMA) and polycarbonate (PC) for noise reduction and lightweight design. However, due to their enclosed structural characteristics, concerns have been raised regarding heat and smoke accumulation as well as the rapid spread of fire. In this study, fire scenarios were established by varying structural conditions, including roof opening ratios and the presence or absence of central partitions, and analyzed using the Fire Dynamics Simulator (FDS). The results demonstrated that PMMA exhibited a lower thermal decomposition temperature and a higher heat release rate, indicating a higher level of fire risk, while PC showed superior fire resistance with higher decomposition temperature and delayed ignition properties. PMMA rapidly exceeded the critical thresholds for temperature and radiative heat flux, resulting in complete combustion. Central partitions were found to accelerate smoke spread, whereas side or roof openings facilitated smoke discharge to the exterior, contributing to fire suppression and improving life safety. In conclusion, this study confirmed that the fire risks of soundproof tunnel are jointly influenced by the combustion characteristics of the materials and the structural conditions. The findings are expected to serve as fundamental data for material selection and design standard improvements in future soundproof tunnel fire safety.

This study analyzed fall accidents involving boatswain’s chairs over the past ten years to investigate their underlying causes and effective preventive measures. The fall accidents in this study were classified according to construction type, work category, and sequence of work. Next, their direct causes were identified by applying the concept of serious injury factor. A focus group interview was conducted with six experts in boatswain’s chair-type scaffolding to derive preventive measures. The results of the investigation indicate that the majority of accidents occurred in maintenance works among construction types, and painting, caulking, and cleaning tasks among work categories. In terms of work sequence, most fall accents occurred while working with descending due to rope defects (loosening, breakage, or insufficient length) and anchorage failures. Based on these findings, two key preventive measures were proposed: (1) installing lifelines as a fail-safe measure to provide safety redundancy, and (2) implementing inherent safety measures to prevent rope defects and failures such as regular inspections, use of high-performance ropes, and ensuring proper anchorage strength. The findings of this study can be utilized in development of effective safety guidelines and policies for boatswain’s chair operations.

In this study, chemicals with acute toxicity experimental data were selected as research subjects, and compareed the model derived from statistical analysis and QSAR open-source programs. The physical and chemical properties, dynamic behaviors, and toxicological estimates of the chemicals were calculated using Mordred, a molecular descriptor calculation program based on RDKit. LD50 was set as the toxicity comparison target for each chemical, and independent variables or factors with similarity to independent variables were estimated from the molecular descriptors calculated through Mordred. Molecule descriptors composed of independent variables were compared to predictions from QSAR open-source models, A regression model was created with the selected molecule descriptors and compared with predictions from QSAR programs, confirming high accuracy for specific functional groups. The QSAR model created in this study considers the characteristics and experimental values of each chemical, and provides evidence for selecting variables when constructing toxicity data for machine learning applications.

Neighboring living facilities and commercial housing have increased along with the rapid expansion of the city. However, unlike general apartment complexes and planned cities, most buildings are built on a narrow site in neighborhood living facilities and commercial housing areas, so securing sidewalk blocks, which are pedestrian passages, is insufficient. The water supply fire hydrant installed in such a narrow sidewalk block has become an obstacle to pedestrian traffic. As a result of the survey, 62% of the walking passages in places where water supply fire hydrant (including protective frames) are installed in the sidewalk block were less than 1.5m. The "Rules on Road Structure and Facility Standards" stipulate that the minimum width of the sidewalk block is 2m or more, and the obstacles and effective width of passage are 1.5m or more. In addition, it was confirmed that the protective frame was interfering with the connection of the fire hydrant hose according to the media reports and the actual results of this study. Therefore, it is necessary to secure a space where the water supply fire hydrant can be used smoothly in case of fire and a safe walking passage, and to manufacture a protective frame, establish construction standards, and prepare legal and institutional standards for efficient maintenance.

자기공명영상(MRI)은 고해상도 연조직 진단을 위한 필수 영상기술로 자리 잡았으나, 다양한 비전리방사선 요소인 정자기장, 고주파 에너지, 경사 자기장 등으로 인해 의료종사자의 직업적 노출과 환자의 안전의 체계적 관리가 요구 된다. 본 연구는 국내 MRI 환경의 안전관리 현황을 검토하고, 국제 가이드라인(미국 FDA, ICNIRP, ACR, IEC, EU 등) 간의 비교를 통해 국내 제도적 기준의 한계와 개선 방향을 도출하고자 하였다. 직업적 노출 증상, 소음 스트 레스, 임플란트 관련 기기 적합성 문제, 교육 및 사고 예방 프로그램의 필요성을 중점적으로 고찰하였다. 특히, 방사 선사의 작업환경에서 발생할 수 있는 생리학적 반응과 기기 상호작용과 관련해 선행 연구 결과를 통합하여 임상 현장 에서 적용할 수 있는 안전관리체계 수립의 근거를 제시한다. 본 연구는 향후 국내 MRI 안전 가이드라인 및 직업적 노출 표준화 기준 수립을 위한 기초자료로 활용될 수 있다.

In industry society, it is challenging to identify and prevent potential hazard factors since an industry is complex and changing variously. Particularly, as industrial accidents occur more frequently by secondary and tertiary indirect causes, rather than primary direct causes such as environmental changes or selfinduced disasters, it becomes more difficult to analyze the risk in safety management perspective. The purposes of this study are to reconsider the variable factors used in the existing Risk Priority Number (RPN) assessment method and to explore a new prioritization method for risks and disasters caused by various external environmental changes. To achieve this, various variables are considered including the currently used variables such as the occurrence frequency, the likelihood of occurrence, the severity. Among the variables, the eight key variables will be selected, and it is to take account of the relative weights between the variables.

In this study, static and dynamic analysis verification was performed to apply the fuel cell system to the E-PTO of the Wire aerial vehicle. First, structural analysis was performed to improve the weak points that occurred. Next, vibration analysis was performed on the fuel cell system for which structural safety review was completed according to the wide-band irregular vibration test standard. The analysis results showed that resonance occurred in a specific frequency band and local stress was high, so stiffness reinforcement was performed. After reinforcing the stiffness, stress was reduced through a decrease in transient response characteristics and resonance phenomenon.