• 한국철도학회:학술대회논문집
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• 한국철도학회 2007년도 춘계학술대회 논문집
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• pp.272-279
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• 2007

Recently, train control system is adopting computer system replacing mechanical system and its software is taking more responsibility than ever. Train control system software is a safety-critical embedded software with realtime and high reliability requirements. In this paper, we propose a safety assessment method for the train control system software. We review characteristics of train control system software and analyze related international software safety standards to derive requirements for safety assessment. Testing tools used for embedded software are surveyed to find a feasible safety assessment architecture. The proposed safety assessment method is to use safety activity results generated during development processes and feed them to the runtime embedded software testing tool.

• 한국콘텐츠학회논문지
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• 제19권7호
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• pp.444-455
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• 2019

본 연구는 간호 간병 통합서비스 병동에 근무하는 간호사의 직무 스트레스, 안전통제감과 환자안전관리 활동의 관련성을 파악하고, 직무 스트레스가 안전통제감과 환자안전관리 활동에 미치는 영향을 확인하기 위한 서술적 조사연구이다. 2019년 3월 11일부터 4월 17일까지 4개 종합병원의 간호 간병 통합서비스 병동에 1년 이상 근무한 간호사 137명을 연구대상으로 하였다. 연구결과 직무 스트레스는 안전통제감, 환자안전관리 활동과 유의한 부적 상관관계가 있는 것으로 나타났으며, 직무 스트레스는 안전통제감과 환자안전관리 활동에 부정적인 영향을 미치는 것으로 나타났다. 본 연구결과를 토대로 간호 간병 통합서비스 병동 간호사의 안전통제감과 환자안전관리 활동을 증진시키기 위해 직무 스트레스를 감소시키기 위한 근무환경 개선이 요구되며, 간호 간병 통합서비스 병동 간호사의 직무 스트레스 관리를 위한 다양한 프로그램 개발이 필요할 것으로 생각된다.

• Safety and Health at Work
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• 제10권1호
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• pp.125-129
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• 2019

The ultimate goal of the quality control program for special periodic health examination agencies is to diagnose the health condition of a worker correctly, based on accurate examination and analysis skills, leading to protect the worker's health. The quality control program on three areas, chemical analysis for biological monitoring since 1995, and pneumoconiosis, audiometric testing since 1996, has contributed to improve the reliability of occupational health screenings by improving the issues including standardization of testing methods, tools, diagnostic opinions, and reliability of analysis for biological monitoring. It has contributed to improving the reliability of occupational health monitoring by rectifying the following issues associated with previous monitoring: absence of standardized testing methods, testing tools that are not upgraded, mismatching diagnostic opinions, and unreliable results of biological specimen analysis. Nevertheless, there are issues in need of further improvement such as lack of expertise or the use of inappropriate method for health examination, and passive and unwilling participation in the quality control. We suggested solutions to these problems for each area of quality control program. Above all, it is essential to provide active support for health examiners to develop their expertise, while encouraging all the health screening agencies, employers, and workers to develop the desire to improve the system and to maintain the relevance.

• Nuclear Engineering and Technology
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• 제41권4호
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• pp.447-454
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• 2009

This paper is a technical review of the research and development results of the Korea Nuclear Instrumentation and Control System (KNICS) project and Nu-Tech 2012 program. In these projects man-machine interface system architecture, two digital platforms, and several control and protection systems were developed. One platform is a Programmable Logic Controller (PLC) for a digital safety system and another platform is a Distributed Control System (DCS) for a non-safety control system. With the safety-grade platform PLC, a reactor protection system, an engineered safety feature-component control system, and reactor core protection system were developed. A power control system was developed based on the DCS. A logic alarm cause tracking system was developed as a man-machine interface for APR1400. Also, Integrated Performance Validation Facility (IPVF) was developed for the evaluation of the function and performance of developed I&C systems. The safety-grade platform PLC and the digital safety system obtained approval for the topical report from the Korean regulatory body in February of 2009. A utility and vendor company will determine the suitability of the KNICS and Nu- Tech 2012 products to apply them to the planned nuclear power plants.

• 한국산학기술학회논문지
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• 제17권7호
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• pp.564-572
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• 2016

본 연구는 중소병원 간호사의 안전간호활동에 영향을 미치는 요인을 파악하기 위한 서술적 조사연구이다. 연구대상은 G광역시에 소재하는 7개 중소병원 간호사 227명을 대상으로 하였다. 자료수집은 2016년 5월 16일부터 5월 23일까지 이루어졌으며, 수집된 자료는 SPSS 18.0 program을 이용하여, 기술통계, t-test, one way ANOVA, Pearson's correlation, multiple regression으로 분석하였다. 분석 결과 환자안전태도 4.11점, 안전통제감 3.74점, 안전간호활동 4.33점이었다. 일반적 특성에 따른, 대상자의 환자안전태도는 학력과 직무만족도에서 통계적으로 유의한 차이를 보였으며, 대상자의 안전통제감은 연령, 학력, 근무경력, 직위, 안전교육경험, 안전사고경험, 직무만족도에서 유의한 차이를 보였고, 대상자의 안전간호활동은 학력, 근무부서, 환자안전교육, 직무만족도에 따라 통계적으로 유의한 차이를 보였다. 환자안전태도, 안전통제감, 안전간호활동 간에 유의한 양의 상관관계가 있었다. 대상자의 안전간호활동에 환자안전태도, 안전통제감, 환자안전교육이 긍정적인 영향을 미치는 것으로 나타났다. 본 연구를 기초로 중소병원 간호사들의 안전간호활동에 대한 강화를 위해서 환자안전태도와 안전통제감을 향상시킬 수 있는 인식전환이 필요하다. 또한, 지속적인 환자안전교육을 위한 다양한 안전 간호사례 제공과 체계적인 지원이 필요하다.

• 대한토목학회논문집
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• 제28권3D호
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• pp.383-390
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• 2008

우리나라의 건설안전 관리시스템은 그동안 꾸준히 개선되어 왔으나 재해강도율은 감소되지 않고 있고 건설산업의 안전수준도 향상되지 못하고 있는 실정이다. 재해강도율을 감소시키기 위해서는 건설현장에서의 안전관리도 중요하지만 안전설계 의무화 및 설계 안전성 평가의 도입이나 건설업 산업안전보건관리비의 효과적인 사용방안 등 제도적인 틀을 개선하는 것이 필요하다. 그 중 안전관리비는 낙찰률에 따라 당초 설계금액보다 줄어드는 문제와 현장에서 사용시 안전관리자 등의 인건비에 비해 안전시설비용이 상대적으로 적게 집행되는 문제점이 있다. 본 연구는 건설업 재해강도율이 감소하지 않는 주요원인을 살펴보고 그 원인을 제거할 수 있는 방안으로 안전관리비와 관련된 문제점 분석을 통해 효과적인 개선방안을 제시함으로써 건설현장의 재해강도율을 낮추는데 기여하고자 한다.

• 대한통합의학회지
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• 제10권3호
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• pp.161-172
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• 2022

Purpose : The study was to promote patient safety by analyzing the effect of dental hygienist's perception of patient safety culture on infection control activities. Methods : The study is based on a survey of 210 dental hygienists in total working in dental settings. To find out infection control activities according to patient safety culture awareness, there were 6 general characteristics, 3 teamwork within the department, 2 infection control systems, 4 surface management, 9 equipment washing, disinfection, and laundry management, 4 infectious wastes, and 3 personal protection phrases.The data was analyzed using the SPSS version 20.0, and p<.05 was adopted to decide on significance. Results : The longer dental hygienists have worked n the dental settings, the more active they become in infection control activities. Among the different types of dental care settings, general (university) hospitals had the largest number of infection control activities, followed by dental clinics, and network dental clinics, in descending order. The dental settings possessing a higher number of dental hygienists were found to conduct more infection control activities than other dental settings. In addition, it was found that when a dental setting adopts a patient safety policy across all the units in the hospital, more systems and procedures for patient safety tend to be established, and that stricter management response to error leads to improvement of infection control activities. Conclusion :In order to enhance infection control activities, infection control activity programs should develop and implement periodic reinforcement of infection control education. regular monitoring of infection control activities.

• 대한안전경영과학회지
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• 제20권3호
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• pp.1-9
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• 2018

This study is intended to look into the effect of construction safety supervision system on risk control and reduction. To achieve this, a survey was carried out to 114 companies in construction, ordering, contract and management. The overall findings were as follows. The effect of construction safety supervision system on risk control and reduction showed that factors of supervision system, supervision cost and supervision method had a positive effect on risk control and reduction. And their perception of the introduction of safety supervision system in construction sites according to process showed that there was a difference between them according to the field of ordering, contract and supervision. There was the biggest difference between owner and contractor in double supervision system, but no difference between them in the perception of risk reduction. These results show that all ordering, contract and supervision are positively needed for the introduction of construction safety supervision. This means that there is a difference between owner and contractor in the perception of process according to system operation. All companies agree to system improvement by the settlement of safety supervision system for the prevention of safety accidents and safe construction, but the systematic complement of safety supervision is the burden of contractor. And there is a big difference between owner and contractor in the perception of responsibility and concern for cost burden.

• 한국건축시공학회지
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• 제8권5호
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• pp.109-117
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• 2008

Recently, there has been constituted the government regulations and the normative methods to control the safety management activities in construction fields, but almost of these regulations are ineffective, because of some characteristics safety management have. The needs of the times make government regulations and the normative methods change to autonomic management methods. In this context, it is significant certainly to improve the standard of safety management that is used as a tool to protect the workers from the accidents or industrial disasters in the construction field. In this research, it will be showed that the outside regulations and safety management systems of the head office have their limits to reflect the safety managements of field participants. Then, it will be presented the improved model of self-control safety management activities which is essential for success safety management.

• Asian-Australasian Journal of Animal Sciences
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• 제30권2호
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• pp.236-245
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• 2017

Objective: The study was to investigate the effects of alanyl-glutamine (Ala-Gln) and glutamine (Gln) supplementation on the intestinal mucosa barrier in piglets. Methods: A total of 180 barrows with initial weight $10.01{\pm}0.03kg$ were randomly allocated to three treatments, and each treatment consisted of three pens and twenty pigs per pen. The piglets of three groups were fed with control diet [0.62% alanine (Ala)], Ala-Gln diet (0.5% Ala-Gln), Gln diet (0.34% Gln and 0.21% Ala), respectively. Results: The results showed that in comparison with control diet, dietary Ala-Gln supplementation increased the height of villi in duodenum and jejunum (p<0.05), Gln supplementation increased the villi height of jejunum (p<0.05), Ala-Gln supplementation up-regulated the mRNA expressions of epidermal growth factor receptor and insulin-like growth factor 1 receptor in jejunal mucosa (p<0.05), raised the mRNA expressions of Claudin-1, Occludin, zonula occludens protein-1 (ZO-1) and the protein levels of Occludin, ZO-1 in jejunal mucosa (p<0.05), Ala-Gln supplementation enlarged the number of goblet cells in duodenal and ileal epithelium (p<0.05), Gln increased the number of goblet cells in duodenal epithelium (p<0.05) and Ala-Gln supplementation improved the concentrations of secretory immunoglobulin A and immunoglobulin G in the jejunal mucosa (p<0.05). Conclusion: These results demonstrated that dietary Ala-Gln supplementation could maintain the integrity of small intestine and promote the functions of intestinal mucosa barriers in piglets.