In this paper, in order to study the relationship between the safety culture of highway management agencies and disaster reduction activities (BCMS), a measurement tool was identified through previous research on safety culture, and the validity of the measurement tool was confirmed through exploratory factor analysis. I want to check. The subjects of the study were workers belonging to disaster reduction activity management system certification organizations among highway management organizations. The highway management agencies are the Korea Expressway Corporation, which manages the functional continuity of national highways nationwide, and 8 of the 21 private road agencies that manage the functional continuity of the highways. The safety culture measurement tool is an indicator that measures safety culture factors, and is reorganized by the researcher based on survey items from previous studies, with management/manager safety values and attitudes, safety communication, safety education and training, and safety regulations/ management system as subfactors. A total of 24 questions were comprised of the survey tool. As a result of the study, the result of exploratory factor analysis was that the safety culture scale was extracted into four factors based on theoretical grounds, and the total cumulative variance was 80.360%. When checking the questions for each factor, it was found that all the questions loaded on the factor that was originally intended to be measured. Factor 1 is management, factor 2 is safety, and factor 3 is communication., Factor 4 was named education. Number of questions: 4 management questions, 3 safety questions, communication It consisted of 4 questions and 2 education questions.

When the foundation work of the underground part of the building structure or the excavation work of the civil engineering structure is carried out, there is the earthwork work by the inevitable process. As the economic situation continues to develop, construction in urban areas is becoming bigger and higher in scale due to the expansion of infrastructure and the rescue of urban dwellings in urban areas, and excavation of underground roads is inevitable. Excavation of the underground part may cause problems in the process difficulty and safety of the earthworks due to the complexity and various characteristics of the ground selected without consideration of the ground characteristics and site conditions. In order to complete the required facilities, it is necessary to secure the design and construction of the retaining walls. In order to complete the required construction, It is an important factor satisfying construction period and economical efficiency.

The latest issue is the smart factory. In order to implement this smart factory, the most fundamental element is to establish product specifications for factors affecting the product, obtain useful data to analyzed and predicted, and maintain safety. But most manufacturers have many errors. Therefore, the purpose of this study is to verify factors of product through statistical techniques and to study the process control and safety.

The pultruded fiber reinforced polymer plastic (PFRP) is one of the most actively studied composite materials for the structural member in construction industries. In domestic design process, the PFRP member is designed as an isotropic material having only longitudinal material properties for simplicity, because it is too complex to consider orthotrophy of PFRP perfectly. In this study, three cases of buckling analysis of PFRP plate is conducted theoretically and numerically. First, the PFRP plate is considered as an orthotropic material. Second, the PFRP plate is considered as an isotropic plate having only longitudinal material properties. Third, the PFRP plate is considered as an isotropic plate having geometric mean of longitudinal and transverse material properties. As a result of buckling analysis, a buckling strength of PFRP plate as an isotropic plate having only longitudinal material properties is about 2.21 times larger than that of PFRP plate analyzed as an orthotropic plate. On the other hand, a buckling strength of PFRP plate as an isotropic plate having geometric mean material properties is about 1.19 times larger than that of PFRP plate analyzed as an orthotropic plate. In conclusion, the safety factor of 3 used in domestic design process of PFRP member is no longer applicable due to overestimation of buckling strength of PFRP member which leads to nonconservative design.

In this study the real situation of apartment house in seoul is reproduced with multi-zone modeling program contam2.4. This model include immune building system(disinfection system) which is consist of dilution, Filter Technology and UVGI(ultra violet germicidal irrdiation). In this study experiments design method used for estimating interaction of HRV air change rate, UVGI air change rate and UVGI grade. Result show that HRV air change rate and UVGI air change rate is most influence factor for remove rate. also Interaction of HRV air change rate and UVGI air change rate is ost influence factor for remove rate.

The studies on semiconductor industrial accident in korea have been focused on the frequencies of each type of safety management employee, characteristics, cause and unsafe conditions, acts and so on Those attributes of semiconductor industrial accidents

본 연구에서는 HAZUS와 같은 지진위험도 추정을 위한 입력으로서 교량구조물에 대한 대표 지진취약도 함수를 도출하기 위하여 기존에 수행되었던 안전율 평가 결과를 이용하여 일련의 교량군에 대한 대표 지진취약도 함수를 도출하는 방법을 제안하였다. 지진응답해석 결과를 근거로 하여 제시된 교량 집단의 각 부재별 안전율을 정리하였으며 이 안전율 결과를 이용하여 각 파괴모드별 지진취약도 곡선을 도출하였다. 각 부재별로 평가된 지진취약도 함수를 이용하여 HAZUS의 입력으로 사용할 수 있는 손상단계별 지진취약도 함수를 도출하였다. 부재별 파괴모드를 이용하여 교량전체의 시스템 취약도를 도출하기 위하여 고장수목을 사용하였다. 결과적으로 본 연구에서는 기존의 안전율결과를 이용하여 취약도결과를 도출할 수 있는 방법을 제시하였다.

This study was attempted to analyze risk factors and suggest accident prevention in live line works for power transmission lines to be developed and applied in Korea. Safety problem cannot but occur at development of live line works and application to the field. With respect to this, problems likely to occur in the field among works adopting methods of works including live line works for power transmission lines were investigated and analyzed through documentary survey and risk assessment method. The results are summarized as follows. A risk assessment method model was suggested. This method enables scientific and systematic development of safety control. That is, the owner may autonomously induce safety control and build risk assessment database by work process to use them as best training data for workers. Also, in the field, it may induce all workers to participate in safety program and secure safety by making workers seek for safety working method under smooth flow from looking at risk factors to accident prevention activities. It is deemed that this humble study will prevent both accident and injury likely to occur in live line works for power transmission lines.

여드름은 면포, 구진, 낭종, 결절, 색소 침착 등 다양한 피부병변으로 나타나는 모낭피지선의 만성 염증질 환으로 사춘기부터 성인기까지 발생 연령대가 다양해지고 있다. 한편, 약물 부작용으로 여드름이 발생하기도 하 는데, 표피성장인자(epidermal grouwth factor, EGF) 수용체 억제제 항암제를 사용할 경우 75 ∼ 100%에서 여드름양 모낭염이 발생된다고 보고되고 있다. 여드름의 치료로 항생제, 레티노이드 경구 복용 및 외용 약제 도 포 등 다양한 방법이 이용되고 있다. 그러나 최근 들어 레티노이드 기형 유발 가능성 및 Propionibacterium acne의 항생제 내성률 증가는 기존 치료의 한계로 여겨진다. 따라서 본 연구는 최근 여드름양 발진에 효과가 있다고 알려진 EGF를 함유한 외용제가 여드름 치료에 미치는 효과와 안정성을 평가하였다. 한국 성인 10 ∼ 29세 23명을 대상으로 EGF 함유 제품(트러블컨트롤 EGF)과 3종 제품(트러블컨트롤 클래리파잉 클렌징폼, 트 러블컨트롤 올-클리어 필링토너, 레드롤 카밍 모이스처)을 하루 두 번 사용하도록 하였다. 사용 후 영상 피지량, 경표피수분손실량, 피부 홍조 측정, 전문가 육안 평가, 사용 후 만족도 설문조사를 평가하였다. 최종 측정 시, 피부 피지량, 경피수분손실량, 피부 홍조가 통계학적으로 감소하였으며, 전문가 육안 평가에서 여드름 병변(면 포, 구진)도 통계학적으로 감소하였다. 연구동안 심각한 부작용은 관찰되지 않았다. 표피성장인자 함유 외용제는 경도의 여드름에 안전하면서도 효과적으로 사용할 수 있을 것으로 생각된다.

Recently, it was found that the Vulnerability Index(VI) of Preliminary assessment for water pipelines seismic performance in domestic had lacks of correlation of detailed safety assessment. The purpose of this study is to propose a reasonable VI by analysing on correlation between existing VI and safety factor.

Rainfall infiltration affects stability of a slope. Though there are many method to reflect various rainfall conditions into slope stability, they are only focused on constant value of rainfall conditions. The variation of slope stability under various rainfall condition, patterns, is executed in this study. And effective rainfall for rail-transport operation control is also examined for applicability to Korean railway lines.

It analyzed the construction cost of reinforcement in the railway bridge abutment, changing friction angle which is important factor in the railway bridge abutment design. In this study, As the friction angle was increasing, the member force that acts on bridge abutment footing decreases. The standard of main reinforcement size used in railway bridge decreased by depending on friction angle. 1. 서

TLP (Tension Leg Platform) is the marine structure for the buckling evaluated to ensure the safety. ABAQUS program was conducted the buckling of TLP. A global model which simulated entire TLP structure has too many elements. This leads a large consumption of time and the hardware for analysis. Therefore, dividing the global model into the detailed models and the local models are significant. In this study, the buckling strength evaluation of the TLP structure members was proceed via non linear finite element analysis presented in DNV-RP-C208.

본 연구에서는 지진시 nailed-soil 굴착벽체의 안전율과 거동특성에 대하여 제시하였다. 시간이력해석을 이용하여 정적하중과 지진하중을 받는 nailed-soil 굴착벽체 전면부의 수평변위, 축력, 전단력, 모멘트를 해석하였다. Dawson과 Roth가 제안한 전단강도 감소기법에 바탕을 둔 안전율을 지진시 nailed-soil 굴착벽체의 안전율 계산에 사용하였다. 제안된 방법에 의한 안전율을 기존의 연구에서 산정된 안전율과 비교하여 그 타당성을 확인하였다.