• 한국직업건강간호학회지
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• 제12권1호
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• pp.31-38
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• 2003

This study is an attempt to analyze the physical load by the type of the nursing tasks at the neurosurgical ICU nurses through the quantitative analysis of the working postures by the type of the nursing tasks with the OWAS(Ovako Working Postures Analysis System). Data collection was conducted through the video recording of the 13 nurses working at the neurosurgical ICU. For the analysis of the work postures by the type of the nursing tasks, and were interviewed regarding the subjective degree of the difficulties with the work postures related to the tasks. Collected data was analyzed through the WinOWAS program. The results were as follows : AC3 or AC4 tasks among the 18 nursing tasks types are "occupied bed making and change of the patient gown", "back massage", "suction", "elimination management", "change of position", "adjustment of bed", "helping the patient to move","measurement of CVP"and "measurement of urine volume". It appears that these tasks are harmful to the musculoskeletal system and the improvement or change of the work is required. The results stated above indicate that improper working postures during the nursing tasks influence the musculoskeletal system. Therefore, making use of assistant devices for the improvement of the working environment at the nursing tasks, based on human technological diagnoses, is required regarding the duty types with massive work pressure known to be harmful to the musculoskeletal system among those performed by the nurses. And there is a need of the education about the employment and maintenance of the vocational back pain prevention.

• 한국초전도ㆍ저온공학회논문지
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• 제13권4호
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• pp.14-17
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• 2011

The evaluation of the electromechanical properties of HTS CC tapes is one of the foremost procedures to be done to ensure the applicability of superconducting wires to electric devices. A precise measurement of the stress and strain is important in deriving the mechanical properties under operating environment. Up to now, there is no standard test method yet for the electromechanical property evaluation of HTS tapes under self field and external magnetic field although there are already reports on the different devices used to evaluate these properties. Strain can be measured by adopting a strain gauge or a high resolution double extensometer. In this study, strain effect on $I_c$ in HTS CC tapes under magnetic fields was evaluated. Comparison of advantages and setback of strain measuring devices were discussed. In addition, a dual strain measurement system using both the SG and extensometer may be practical to lessen the burden in case one of the measuring devices does not work well.

• 디지털융복합연구
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• 제11권11호
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• pp.85-94
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• 2013

본 논문에서는 기존 DTV 커버리지 측정차량의 문제점을 해결하고 효율적으로 전파 음영지역을 찾아내기 위해 고정식 DTV전파측정차량의 기능을 포함하면서도 이동하며 전파수신현황 및 수신상태를 측정할 수 있는 다중 안테나 이동측정시스템을 제안한다. 제안된 시스템은 모두 4개의 무지향성(omni-directional)안테나와 고정측정을 위한 1개의 지향성(directional)안테나를 포함하며, 공간 다이버시티(space diversity)를 활용하여 운용할 수 있도록 각각의 안테나마다 측정장비를 배치하고 각각의 측정값을 실시간으로 수집하고 처리한다. 제안된 시스템의 효용성을 보이기 위해 국내 수신 전파 환경을 3가지 유형으로 모델링하고 이들 지역에서 집중적인 측정을 실시하였다. 또한 측정 결과의 상세한 분석을 토대로 이동측정 및 고정측정간의 상관관계를 밝히고자 하였다. 특히 제안된 시스템의 적용을 위한 실험에는 방송사 현업 실무자들이 측정 및 결과 정리에 공동으로 참여하는 등 객관성을 확보하고자 하였으며 개발 장비를 국책 연구기관의 인위적 난시청 조사사업에 일부 적용하는 등 실제 방송 커버리지 관리 업무에 적극적으로 활용하고 있다.

• 한국도서관정보학회지
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• 제43권2호
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• pp.137-155
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• 2012

본 연구는 국 공립대학도서관, 사립대학도서관, 전문대학도서관, 지방자치단체 소속 공공도서관을 선정하여 관종별 도서관 사서들의 직무만족도의 차이점을 측정 비교 분석하였다. 측정항목으로 10가지 직무만족 요인을 선정하여 전체적인 사서의 직업만족도와 직무만족, 고용만족, 승진제도 만족, 업무분장만족, 보수제도 만족, 복무제도 만족, 시설환경 만족, 교육훈련 만족, 후생복지 만족, 인간관계에 대한 만족 요인을 비교 분석 하였다. 첫째, 전체적인 사서의 직무만족도는 5점 척도 만점에 3.940으로 비교적 높은 만족도를 보였으며, 관종별로는 사립대학 도서관, 전문대학 도서관, 공공도서관, 국 공립대학 도서관 순으로 나타났다. 둘째, 직무만족요인에 선정된 10가지 항목에 대한 전반적인 관종별 만족도 순위는 교육훈련, 직업, 복무제도, 인간관계, 고용제도, 업무분장, 시설환경, 보수제도, 후생복지, 승진제도 만족 순으로 측정되었다.

• 한국산업보건학회지
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• 제33권2호
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• pp.215-229
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• 2023

Objectives: To validate the effectiveness of a real-time chemical exposure monitoring system developed by KOSHA (Korea Occupational Safety and Health Agency), we applied the system to a workplace in the electronics industry for 153 days. Methods: The monitoring system consisted of a PID chemical sensor, a LTE communication equipment, and a web-based platform. To monitor chemical exposure, four sets of sensors were placed in two manufacturing tasks - inspection and jig cleaning - which used TCE as a degreasing agent. We reviewed previous reports of work environment measurements and conducted a new work environment measurement on one day during the period. The PID sensor systems detected the chemical exposure levels in the workplace every second and transmitted it to the platform. Daily average and maximum chemical exposure levels were also recorded. Results: We compared the results from the real-time monitoring system and the work environment measurement by traditional methods. Generally, the data from the real-time monitoring system showed a higher level because the sensors were closer to the chemical source. We found that 28% of jig cleaning task data exceeded the STEL. Peak exposure levels of sensor data were useful for understanding the characteristics of the task's chemical use. Limitations and implications were reviewed for the adoption of the system for preventing poisoning caused by chemical substances. Conclusions: We found that the real-time chemical exposure monitoring system was an efficient tool for preventing occupational diseases caused by chemical exposure, such as acute poisoning. Further research is needed to improve the reliability and applicability of the system. We also believe that forming a social consensus around the system is essential.

• Journal of Korean Society for Atmospheric Environment
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• 제10권E호
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• pp.299-302
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• 1994

At a nuclear power plant, environmental radioactivity monitoring is routine work for the radiation safety management For the environmental monitoring of tritium($^3$H) activity in water sampled liquid scintillation counting( LSC) method is applied to measure low- energy beta activity from tritium in the samples. The $^3$H activity is measured using the BECKMAN 5801 system at the KRISS( Korea Research Institute of Standards and Science) for evaluating the lower limits of detection( LLD) of $^3$H measurement and the measuring capability of low-level $^3$H activity at four nuclear Power Plant sites. The LSC systems used for low-level $^3$H activity measurements at the nuclear Power Plants are confirmed to satisfy throughout an intercomparison study under the experimental arrangements by the KRISS.

• 한국산업보건학회지
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• 제33권4호
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• pp.427-438
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• 2023

Objectives: This study aims to create a safer working environment by examining the working environment of cleanroom cleaning workers through a survey and comparing the differences in perception between workers and managers. Methods: The survey was written based on the working environment and the safety and health management system. In order to improve the quality of the study, we visited the sites in person and conducted an in-depth interview. SPSS Statistics 26 (IBM, USA) was used to analyze the data. Results: Based on the survey, differences were found in chemical used, MSDS sharing methods, risk factors during cleaning work, work environment measurement results, special health examination items, places considered dangerous, and work. Conclusions: It is necessary that there be different work environments and risk factors for cleanroom cleaning workers at respective workplaces. As a result of the survey, there was found to be a difference in perception between workers and managers, and both workers and managers should try to reduce this difference.

• Journal of Platform Technology
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• 제11권2호
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• pp.66-75
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• 2023

첨단장비 도입 및 기술의 발전으로 수문조사 측정 기술은 향상되었으나 여전히 수문조사 시 많은 인력과 시간이 필요하며, 업무 규모와 범위에 비해 투입되는 인력은 매우 제한적이다. 또한, 자동유량 측정시설이 운영되고 있지만 현장 조건의 제한되기 때문에 전국으로 확대하기가 어렵다. 따라서 수문조사를 위해 측정 기술 자체보다는 운영 인프라 및 환경 개선이 필요하다. 또한 유량조사 측면에서 수위-유량 관계식의 정확도 재고와 업무 효율성 증진을 위해 실시간 수위 정보를 이용한 조사 스케줄링이 필요하다. 따라서 본 논문에서는 국내 수문조사 관련 연구 파악 및 수문조사의 경제성과 효율성 증대를 위하여 Open API 기반의 실시간 수위 정보를 활용한 수문조사 스케줄링 시스템을 구현하였다.

• 해양환경안전학회지
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• 제22권7호
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• pp.807-813
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• 2016

해상교통안전진단제도는 연안에서 선박의 항행에 영향을 미치는 각종 해상사업으로 인해 발생할 수 있는 위험요인을 전문적으로 조사 측정 평가하기 위해 2009년에 법제화된 이후에 제도 발전에 관한 여러 연구가 수행되어 왔다. 이러한 연구결과를 분석하여 현제도의 미비점을 색인한 결과, 안전진단 결과에 따라 해상사업이 수행되었는지 검증하기 위한 절차와 안전진단의 주요 과정 중 하나인 선박조종 시뮬레이션의 정확성을 검증하기 위한 사후관리 관련 규정이 미흡했다. 사후관리제도 도입 필요성이 드러남에 따라 법령화된 유사 제도인 환경영향평가제도와 도로교통안전진단제도의 법체계를 분석하였다. 그리고 해상교통분야의 미비점을 개선하기 위한 법령안을 구체적으로 제시하였다. 본 고의 법령안은 진단의 정확도를 검증하고 진단결과의 이행을 담보함으로써 해상사업과 관련된 잠재적 위험요인을 제거하고 해상교통안전에 기여할 것으로 기대된다.

• 한국산업보건학회지
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• 제17권3호
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• pp.254-260
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• 2007

Trichloroethylene(TCE) is widely used as a degreasing solvent in workplaces. TCE is primarily toxic to the nervous system, however, systemic disorder like Stevens-Johnson syndrome has been recently reported in small-scale factories, where the government has had limited information of chemical use. A survey was performed to investigate the actual condition of using TCE and to provide practical information to occupational health service agencies and professionals. This survey was carried out on 103 factories out of 430 factories which were conducted periodic work environment measurement for TCE. Degreasing was the most popular reason for using TCE in Korea, which reached to 94%. TCE was also used as a solvent for rubber in the coating or molding process, and adhesives in the bonding process. Metal fabrication was the most common as 23%, followed by assembling automobile parts (17%), and machinery (12%). Workers exposed to TCE during full-shift were 52% while 48% were exposed during short period of the shift or intermittently. Manual or semi-automatic work occupied 87% while automatic work was just 13%. Though automatic work by a closed system was generally lower exposed to TCE, compared to manual work, it can cause a high exposure when the maintenance system is improper. Semi-automatic work especially like open-top degreasing process can cause a high exposure when local exhaust system with condensing and refrigerating coils in the degreaser does not work well. In conclusion, the survey showed nationwide status of TCE exposure in various aspects. It can be used to monitor workplaces and workers exposed to TCE to prevent occupational diseases.