• Journal of the Korea Furniture Society
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• v.24 no.3
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• pp.302-308
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• 2013

To collection of field data for development of maintenance manual of Han-ok, we investigated defects which occurred in members of Han-ok by field investigation. The noticeable defects were wood cracks, gaps that developed between wood pillar and wall or wood window frame and tenon joints. The most common biological defect was blue stain which was created in log. The mold generation was observed on exterior wood and wall which get wet by precipitation. The gaps between members of Han-ok pointed out as defect that is urgently improved by residents of Han-ok. The reason is mainly due to poor of insulation in winter by bad confidentiality. The maintenance work of defect such as gap was conducted personally. As a result, the repair parts were ugly for unfamiliar repair work.

• Industrial Engineering and Management Systems
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• v.7 no.1
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• pp.90-98
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• 2008

This research selects the lifting task to be the main subject. Four experiments were designed to measure which among lifting postures, lifting heights, waist-belt, and breathing control significantly influences intra-abdominal pressure (Gallagher, 1991; Lavender, Andersson and Natarajan, 1999). The experimental results were taken to be the recommendations of the manual materials handling work design. The research findings reveal that the symmetrical stoop posture is the most significant to the intra-abdominal pressure within all lifting postures. When the lifting height is increased, the intra-abdominal pressure produced relatively goes up. Also, the combination of symmetrical stoop posture, waist-belt use, and inspiration and holding at the same time is the most efficient in carrying out lifting tasks. Simultaneously, the research discovers that for any posture, the volume of the intra-abdominal pressure is much bigger when using the waist-belt compared to when it is not used. Therefore, the waist-belt design for the lifting works might be the future research approach.

• Journal of the Korea Safety Management & Science
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• v.16 no.3
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• pp.101-110
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• 2014

This study tried to identify the effects of ergonomic risk factors for absence from work of fire fighters in Korea. A self-administered questionnaire was prepared for this study. The questionnaire consisted of several parts such as 'general information', 'work-related factors', 'physical & chemical risk factors', 'ergonomic risk factors', and 'absence information'. A total of 7,098 fire fighters participated in this study. The data obtained from the survey was mainly analyzed by logistic regression. A total of 856 out of 7,098 fire fighters experienced absence from work. The risk factors such as gender, age, marital status, education level, total work year, work area. position, job rotation, noise, dust, organic solvent, skin contact with chemical substance, toxic waste, regional vibration, manual material handling, continuous standing posture, awkward working posture were associated with absence from work. Specifically, awkward working posture and manual material handling from ergonomic risk factors were major risk factors for absence from work.

• Journal of Preventive Medicine and Public Health
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• v.22 no.1 s.25
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• pp.90-101
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• 1989

Recently concerns on work stress and mental health status of industrial workers were increased. The purpose of this study was to investigate the work stress measured by PSI (psychiatric symptom index) according to socio-demographic variables. The study population was consisted with two types of group; manual and clerical workers. The major findings of this study were as follows; Mean scores of psychiatric symptom in manual workers were higher in female, youth, educated, unmarried and divorced, noisy condition, that in clerical workers was higher in aged. Mean scores of psychiatric symptom were highly affected by degree of work autonomy, self-esteem, and self-efficacy in both groups. The higher the work autonomy, self-esteem, and self-efficacy, the lower the mean scores of work stress it showed. Psychiatric symptom index was explained with the work autonomy, self-esteem, self-efficacy through multiple stepwise regression. The annual admission rates were high in highly ranked groups on each psychiatric symptom dimension.

• Safety and Health at Work
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• v.14 no.1
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• pp.59-65
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• 2023

Objectives: Epidemiological evidence linking long working hours and shift work to metabolic syndrome remains inadequate. We sought to evaluate the impact of reducing working hours on metabolic syndrome. Methods: We compared the prevalence of metabolic syndrome among male manual workers in a manufacturing company (N = 371) before and after the introduction of policy to reduce daily work hours from 10 to 8 hours. Components of metabolic syndrome were measured in periodic health examinations before the intervention, 6-9 months after, and 1.5-2 years after the intervention. Generalized estimating equation models were used to estimate changes in the prevalence of metabolic syndrome. Analyses were stratified by day work versus shift work. Results: The results showed a significantly decreased prevalence of metabolic syndrome 6-9 months following the intervention in day workers (risk ratio = 0.68, 95% confidence interval 0.52-0.88), but the benefit disappeared after 1.5-2 years. Shift workers showed a decreased prevalence of metabolic syndrome for the whole follow-up duration after the intervention, although the change was not statistically significant. Conclusion: Reducing working hours was associated with short-term improvement in metabolic syndrome in male manual workers.

• Journal of Korean Institute of Industrial Engineers
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• v.41 no.6
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• pp.551-558
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• 2015

The purpose of this paper is to investigate the development of mechanical projectile transfer system to prevent musculoskeletal problems in the firing test range. Prior to 2010, the projectile has been transferred from the worktable to the loading device of 155mm K9 fixed-type artillery by manual. Because the amount of firing test has been increased drastically since 2010, two types of mechanical projectile transfer system were developed to prevent musculoskeletal problems. The NIOSH lift equation and the working posture assessment system such as OWAS, RULA and REBA were used to evaluate the appropriacy of working weight and posture by manual transfer of projectile. The configuration and operation procedure of projectile transfer systems which were developed to improve work efficacy and to reduce the burden of manual transferring were described. The improvements were assessed by the number of processes, the tact time and the working posture assessment for operation of this system by comparing to the manual transfer of projectile.

• Korean Journal of Occupational Health Nursing
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• v.7 no.2
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• pp.186-199
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• 1998

Necessity for the guidebook of occupational health nursing practice has been perceived by our OH research members since the health management of small scale enterprises(SSE) was controlled by law. Mean-while, developing the OH manual, our team found that the work situation of occupational health nursing(OHN) services should be prior to the construction of the OHN manual. This procedure was regarded as helpful for producing the OH manual which is fitting to the Korean nursing circumstances. Thus, this study was planned and carried out. The study aimed to find out current situation of work performance on occupational health nursing practice perceived by nurses working for health management of SSE. Questionnaire was distributed to the OH nurses working in the 55 group occupational health service(GOHS) agencies throughout the Korea from January to March in 1997. Ninety-seven nurses of the 31 GOHS agencies responded. Descriptive statistics was used in the SAS programme. Four nurses participated to select nursing area investigated in the study. Those area were 'document', 'job orientation', 'OH reference', 'nursing theory', 'group health education', 'health examination', 'work dilemma', 'approach attitude', 'workplace visit', 'health promotion' and 'communication'. Results can be summarized as follow : Types of document were mentioned diversely depending on the GOHS agencies. Job orientation was seen to be performed by nurses in 56% among the 75.3% nurses responded. Sixty five percents of nurses agreed to apply nursing theories into the OH with lack of knowledge on them. Health screening and health education were responded as commonly provided nursing activities with various nursing obstacles as well as indicated in the area of 'work dilemma', 'approach attitude', 'workplace visit', 'health promotion'.

• Journal of Preventive Medicine and Public Health
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• v.42 no.5
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• pp.323-330
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• 2009

Objectives : The aim of this study was to investigate whether working married women in different occupational classes affected diverse health outcomes. Methods : We used data for married women aged 25-59 (N=2,273) from the 2005 National Health and Nutritional Examination Survey. Outcome measures included physical/mental and subjective/objective indicators (selfrated poor health, chronic diseases, depression, and suicidal ideation from reported results; metabolic syndrome dyslipidemia from health examination results). Agestandardized prevalence and logistic regression were employed to assess health status according to three types working groups (housewives, married women in manual jobs, married women in non-manual jobs). Sociodemographic factors (age, numbers of children under 7, education, household income) and health behaviors (health examination, sleep, rest, exercise, smoking, drinking) and a psychological factor (stress) were considered as covariates. Results : Non-manual married female workers in Korea showed better health status in all five health outcomes than housewives. The positive health effect for the non-manual group persisted in absolute (age-adjusted prevalence) and relative (odds ratio) measures, but multivariate analyses showed an insignificant association of the non-manual group with dyslipidemia. Manual female workers showed significantly higher age-adjusted prevalence of almost all health outcomes than housewives except chronic disease, but the associations disappeared after further adjustment for covariates regarding sleep, rest, and stress. Conclusions : Our results suggest that examining the health impact of work on married women requires the consideration of occupational class.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.20 no.2
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• pp.35-42
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• 2014

Background: The purpose of this study was to effect of the manual therapy and pelvic floor muscle exercise interventions in patient with acute lumbar sprain. Based on this, proceed to present an effective physical treatments. Methods: Subject was 55 year old female patient with acute lumbar sprain. Subject was damaged, wash in the morning. Subject was hoping to return to work and Activity daily living (ADL) without pain. I proceed in order screening, evaluation, diagnosis, prognosis, treatment planning and intervention, re-screening. To solving problem, was conducted in parallel to a manual therapy and therapeutic exercise. Results: To investigate changes in body functions and activities was measured, Visual analog scale (VAS) and Oswestry disability index (ODI), changes in posture, maintain in posture, 10m walk test. The improved results were compared before and three weeks after mediation interventions. Conclusions: Frequency manual therapy and pelvic floor muscle exercise is thought to be an efficient way of patients with acute lumbar sprain.

• Journal of the Korea Safety Management & Science
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• v.7 no.1
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• pp.57-76
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• 2005

A standardized ergonomics kit is suggested to evaluate and reduce musculoskeletal hazards that yield large socioeconomic burdens in the work system. This kit comprises basic and detailed analysis tools with proper tool selection rules. The basic tool includes a checklist for various risk factors to screen potentially hazardous jobs among manual works. Selective detailed analysis tools can then be applied to the screened job lists for more quantitative and precise evaluation. The tool selection rules are devised for using the basic and detailed analysis tools in a mutually supplemental way. To validate the standardized ergonomics kit, it was applied to evaluate jobs related to the musculoskeletal hazards in a paper-making industry. Among 101 manual jobs investigated, 44 potential hazardous jobs were screened during basic investigation phase and finally 16 hazardous jobs were identified by the detailed analysis phase. The result provided fairly promising ideas of ergonomic interventions for the hazardous jobs.