• 산업공학
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• 제9권3호
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• pp.257-268
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• 1996

This paper illustrates the process of developing and configuring the prototype Computer Analysis System for Controlling Occupational WORKload (CAS-COWORK). The software interface between the database and expert system was attempted. The database is used for storing and retrieving series of data entered by general users and the expert system is used for identifying and solving occupational problem areas. Two theories were applied in developing the algorithm base of CAS-COWORK that were used to calculate overall workload stress level. The fuzzy set theory was introduced to capture the subject‘s workload stress perception. The Analytic Hierarchy Process (AHP) was introduced to estimate the importance of the task and workplace variables. The purpose of the system development is for future prediction and problem solving which would be highly valuable to the industrial engineer.

• 전기학회논문지
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• 제62권8호
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• pp.1192-1197
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• 2013

In this paper Ubiquitous Medical Electronic Device Export was defined, and it's job analysis. The authors have been defined the job and classified duties and tasks of Ubiquitous Medical Electronic Device Export. To fine what is the most efficient task for Ubiquitous Medical Electronic Device Export, we have been investigated the levels of importance, difficulty, frequency and entry in each task. A DACUM committee is composed of total 12 members, which are one facilitator, 10 panel members, one coordinator & recorder to analyze the job of Ubiquitous Medical Electronic Device Export. Following is the result of this study. First, The process began with the identification of a job title and definition of Ubiquitous Medical Electronic Device Export. Second, a job model of Ubiquitous Medical Electronic Device Export is constructed based on the results of DACUM job analysis. 5 duties and 33 tasks are analyzed. Third, occupational specification was drawn up in consultation with SME council. Fourth, duty specification was drawn up in consultation. 33 tasks that are essential in entry level of occupation are identified. Fifth, task specification was drawn up in consultation. Detail task component which include skill, materials, knowledge, equipment, achievement level and tool was specified in task specification.

• 대한감각통합치료학회지
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• 제11권1호
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• pp.11-27
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• 2013

목적 : 학교기반 작업치료는 교육전문가와 협업하는 다전문가적 접근이 필요하다. 본 연구는 일반 초등학교에 진학하는 고위험군 아동들을 대상으로 특수교사와 작업치료사가 함께 지역사회 기관에서 협업으로 실시하는 집단교육 시간의 작업수행변화를 분석하고, 감각통합 중재의 의미를 파악하고자 하였다. 연구방법 : 예비 프로그램으로 입학준비 프로그램을 특수교사와 작업치료사의 부분적인 협업을 통해 실시한 후, 초등학교 적응프로그램은 특수교사와 작업치료사가 전체과정을 협업하여 시행하였다. 연구대상은 6명이었다(7세 5명, 9세 1명). 프로그램 평가는 교육활동 참여에 대해 School AMPS를 실시하였고, 일정하게 구성된 자조활동에 대해 AMPS 수행기술을 관찰하여 중재전략에 활용하였다. 평가를 통한 중재전략과 그에 따라 진행된 변화를 교사와 치료사의 월간 기록을 토대로 질적 분석을 실시하였으며, 부모설문을 통해 감각프로파일을 조사하였다. 결과 : 사전 프로그램에 참가한 아동 5명 중 4명이 감각통합적인 어려움으로 수행에 영향을 받는다고 평가되었고, 이 결과가 본 프로그램 구성에 기반이 되었다. 본 프로그램 구성은 참가 아동이 속한 학년의 교실에서 수업과제(school task)와 집단 활동, 기본 자조활동으로 이루어졌고, 수업과제활동평가 School AMPS는 통계적으로는 유의미하지 않으나 평균 운동기술은 0.14 로짓(logit), 평균처리기술은 0.07 로짓이 향상되었다. 협업적 중재로는 감각 통합이 주된 회복적 중재로 사용되었고, 과제수행을 통해 직접 어려움이 있는 기술을 향상하는 습득적 중재, 교사의 대응전략이나 도구 및 환경 조정을 시행하는 보상/적응적 중재가 적용되었다. 기본적 자조활동들은 도움이 필요한 수준에서 자립적인 수준으로 향상되어서 반복적인 자조활동의 경험과 중재가 효과적이었다. 그러나 개선된 수행기술들 이외에 새롭게 도전이 되는 수행기술이 발생하였고, 이런 문제들은 감정과 행동문제와 더불어 감각통합의 어려움 뿐 아니라 집단에서 일어나는 역동적 이유 때문으로 평가되었다. 결론 : 초기에는 감각통합 프로그램을 통하여 학생들의 참여가 향상될 수 있었다. 그러나, 집단 활동을 통해서 드러나는 초등학생들의 감정조절 문제, 역할 변화에 따른 수행변화, 또래에 대한 반응문제가 드러남에 따라 감각통합적인 중재에서 더 복합적인 개인-환경-과제에 대한 중재가 필요하였다. 특수교사와 작업치료사의 협업은 상호보완적이며 필요한 수행기술을 향상하는 데 시너지 효과가 있었다. 이 과정에서 School AMPS는 측정 가능한 결과를 일부 제시하는 데 유용하며, 향후에는 질적 분석을 보다 객관화 할 수 있는 방법들이 요구된다.

• 한국산업보건학회지
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• 제26권2호
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• pp.210-218
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• 2016

Objectives: The objectives of this study were to investigate female labor workers' occupational stress and musculoskeletal symptoms and to identify the effects of their occupational stress and musculoskeletal symptoms on their health-related quality of life. Methods: A survey was conducted through direct interviews using a musculoskeletal symptoms questionnaire, the Korean Occupational Stress Scale(KOSS), and the Short-Form 36-Item Health Survey(SF-36). Subjects were 112 female labor workers in three factories in D city who were selected by convenience sampling. Results: Factors significantly affecting health-related quality of life were found to be: occupational stress(${\beta}$=-.36); degree of pain, with medium pain(${\beta}$=-.31) and extremely severe pain(${\beta}$=-.24); duration of pain, with more than 1 week-less than 1 month(${\beta}$=-.25) and more than 6 months(${\beta}$=-.16); frequency of pain, with once per 2-3 months(${\beta}$=-.22); responses to pain such as medical leave, use of worker's compensation insurance, task change, etc.(${\beta}$=-.16), and Slightly difficult(${\beta}$=-.16) versus Not hard at all. These variables demonstrated that health-related quality of life is 48%(F=11.72, p<.001) in female workers. Conclusions: To improve female labor workers' health-related quality of life based on the above results, occupational health managers should reduce the workers' occupational stress, develop and apply health interventions regarding musculoskeletal symptoms, prevent the early onset of musculoskeletal symptoms, and protect and promote the workers' health.

• 근관절건강학회지
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• 제18권1호
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• pp.83-92
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• 2011

Purpose: The purpose of this study was to identify the changes of physical function, perceptual and cognitive function, emotional function, and functional independence in the institutionalized aged according to functional group activity program (self help Tai Chi exercise plus functional task). Methods: Study subjects were 20 institutionalized aged from June to October in 2010. The subjects received functional group activity program two times a week for 15 weeks. Physical function (grip strength, coordination, lower extremity strength, balance, gait, trunk flexibility), perceptual and cognitive function, emotional function(depression, social skill), and functional independence were measured before and after the program. Results: The subjects showed significantly increased physical function (coordination, lower extremity strength, gait, trunk flexibility), perceptual and cognitive function, emotional function (depression, social skill), and functional independence. The functional group activity program may be an effective strategy for institutionalized elders to enhance their functions. Conclusion: The functional group activity program may be effective on elderly institutions which have limitation in human, material, environmental resources.

• 한국전문물리치료학회지
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• 제11권1호
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• pp.75-83
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• 2004

The purpose of this study was to research the effects of vocalization on upper extremity motion during occupational performance and to compare non-meaning and meaning vocalization. Experiments were performed on 30 subjects. They had no medical history of neurological problems with their upper extremities. Using a tea cup, a tea tray, and a tea spoon, they set a table during vocalization. We used meaning and non-meaning vocalization with the subjects. An example of meaning vocalization would be naming something, and an example of non-vocalization would be saying, "Ah." We used a 3-D analysis system called CMS-HS. We analyzed the motion in the angular velocity and acceleration of the elbow while recording performance time. The results of this study showed that vocalization enhanced the angular velocity and acceleration of the elbow, and also enhanced performance time. In short, vocalization improved upper extremity motion by making it faster and smoother. There were no significant differences between meaning and non-meaning vocalization.

• Safety and Health at Work
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• 제12권4호
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• pp.462-470
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• 2021

Background: Fatigue is pervasive, under-reported, and potentially deadly where flight operations are concerned. The aviation industry appears to lack a standardized, practical, and easily replicable protocol for fatigue risk assessment which can be consistently applied across operators. Aim: Our paper sought to present a framework, supported by real-world data with subjective and objective parameters, to monitor aircrew fatigue and performance, and to determine the safe crew configuration for commercial airline operations. Methods: Our protocol identified risk factors for fatigue-induced performance degradation as triggers for fatigue risk and performance assessment. Using both subjective and objective measurements of sleep, fatigue, and performance in the form of instruments such as the Karolinska Sleepiness Scale, Samn-Perelli Crew Status Check, Psychomotor Vigilance Task, sleep logs, and a wearable actigraph for sleep log correlation and sleep duration and quality charting, a workflow flagging fatigue-prone flight operations for risk mitigation was developed and trialed. Results: In an operational study aimed at occupational assessment of fatigue and performance in airline pilots on a three-men crew versus a four-men crew for a long-haul flight, we affirmed the technical feasibility of our proposed framework and approach, the validity of the battery of assessment instruments, and the meaningful interpretation of fatigue and work performance indicators to enable the formulation of safe work recommendations. Conclusion: A standardized occupational assessment protocol like ours is useful to achieve consistency and objectivity in the occupational assessment of fatigue and work performance.

• 한국산업보건학회지
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• 제25권4호
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• pp.446-464
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• 2015

Objectives: This study was conducted to evaluate the task-specific hazards of chemicals used by nail technicians in Daegu Metropolitan City. Materials: A total of 30 nail shops located in Daegu City were surveyed to investigate the major tasks and practices performed by nail technicians and the ingredients listed in nail care products used in shops. We also collected instructions for use and material safety data sheets(MSDSs) of nail care products and compared CAS Nos. of ingredients with the lists of chemicals regulated by the Industrial Safety and Health Act(ISHA) and Chemical Substances Control Act(CSCA). Results: A total of 125 chemical ingredients were found in 468 nail care products used at the 30 nail shops. The most frequently found ingredients were ethyl acetate(72%), followed by n-butyl acetate(71.8%), isopropanol(56%), benzophenone(51.1%), nitrocellulose(46.4%) and ethanol(45.3%). Comparing six tasks, the task of manicuring used the most products at 222 products containing 91 ingredients. Among the 125 ingredients, there are 31 chemicals with occupational exposure limits(OEL) designated by the Ministry of Employment and Labor(MoEL), eight categorized as carcinogens, one mutagen and two reproductive toxic chemicals. In terms of carcinogens, formaldehyde was identified as the only confirmed human carcinogen(1A). We found that there was one chemical with a permissible limit, one special management substance, 18 workplace monitoring substances and ten special health diagnosis substances regulated by ISHA. For CSCA, nine poisonous substances, six substances requiring preparation for accidents and one restricted substance were identified. Conclusions: Based on these findings, formaldehyde was identified as one of the chemicals that should most strictly be controlled for the protection of the health of nail technicians and customers. At the same time, it is necessary to distribute materials with detailed hazardous information of nail care products for nail shop technicians.

• 한국산업보건학회지
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• 제15권1호
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• pp.27-35
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• 2005

This study was carried out to evaluate the characteristics of petroleum refinery workers' exposure to organic solvents. Exposure assessment was conducted by full shift-based long term personal sampling(TWA-P) and task-based short term personal sampling(STEL-P) strategy. Major organic solvents that workers can be exposed are various, varying from C3~C12, and this study focused on 11 kinds including benzene, considering toxicity and concentration level. In comparison with two sampling results, STEL-P shows a significant(p<0.001) excess of exposure level rather than TWA-P. As the potential risk index for benzene is calculated as 16, benzene should be set the highest priority for control in petroleum refinery industry. The tasks with the highest benzene exposure level were de-watering(AM;99.8 ppm), draining(AM;19.6ppm), sampling(AM;16.2ppm), and manual gauging(AM;15.02ppm). Petroleum refinery workers' exposure pattern to organic solvents differs by tasks performed, and some task has a high risk of temporary extreme exposure. Therefore, traditional 8-hour TWA sampling strategy have possibility of underestimation of exposure level of workers in petroleum refinery.

• 한국환경보건학회지
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• 제36권3호
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• pp.191-198
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• 2010

The aim of this study was to determine the concentrations of air-borne microorganisms (bacteria, fungi, gram negative bacteria (GNB), endotoxins, and respirable suspended particles (RSPs), and their correlation with environmental parameters (temperature, humidity, and carbon dioxide levels) in duck houses. The mean concentrations of bacteria, fungi, and GNB were very high (> $10^6\;CFU/m^3$), and endotoxin levels exceeded $10^3\;EU/m^3$. Among the various work stages, in the task of receiving ducks, bacteria were $6.2{\times}10^6;CFU/m^3$, and GNB were $5.4{\times}10^6\;CFU/m^3$, while RSPs levels were $397.6\;{\mu}g/m^3$ and endotoxin levels were $47.2{\times}10^3\;EU/m^3$ in the task of dividing the ducks, and fungi were $4.9{\times}10^6\;CFU/m^3$ in the task of shipping the ducks. The concentrations of RSPs and endotoxins were significantly higher in tasks involving greater movement of ducks in the house, relative to tasks involving little movement of ducks (p<0.05). Further, with progression in growth of the ducks, the concentrations of bacteria, GNB, endotoxins, and RSPs were significantly increased. There was significant correlation between levels of GNB with bacteria (r=0.75) and fungi (r=0.86), endotoxins with RSPs (r=0.75), bacteria with fungi (r=0.39), and carbon dioxide with RSPs (r=0.38), bacteria (r=0.33), and endotoxins (r=0.31). These results suggest considerable respiratory hazard for farmers in these environments.