• Journal of Fisheries and Marine Sciences Education
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• v.28 no.6
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• pp.1651-1661
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• 2016

The purpose of this study is to draw up a plan for improving working conditions of distant water fishing vessel crew in order to revitalize the declining distant water fishing industry. Land-based employment has increased as the result of industrialization, which in turn created shortage in marine crew supply for distant water fishing vessels. Pressure on increasing wages for sea farers is put on the industry for this reason, making the labour market in the distant water fishing industry tougher and tighter. Multiple issues have yet to be addressed for distant water fishing vessel crew. They suffer from excessive work compared to other industries. Crew management is another issue, as sea farers face poor labour conditions, working on board vessels in a collective way where no autonomous actions are allowed. Other issues include unqualified crew supply, increasing ratio of labour costs for crew to sales, and intensified implications of labour unions, which are as well making crew supply difficult as a whole. To this end, more well-qualified workers should take part in production operations in the distant water fishery. Both wage increase and working condition improvement should be achieved in order to strengthen motivation towards qualified sea farers. Sustainable crew supply can be achieved when working environments, gender-based working conditions, welfare are prioritized and improved as a whole.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.32 no.2
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• pp.116-128
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• 2022

Objectives: The aim of this study was to examine the association of working posture with headache/eye strain in Korean waged workers. Methods: Data were collected from the 5th Korean Working Condition Survey. A total of 30,955 workers participated in this study. A four-items of working postures were measured using a 7-point Likert scale, and we categorized them into three groups ('normal', 'moderate', and 'severe') each 4 items. Headache/eye strain were measured using a self-administrative questionnaire ('yes' vs. 'no'). To examine the relationship between the total working postures score and headache/eye strain, we summed a 4-items of working postures. It was categorized into five groups according to the severity of exposures('normal', 'mild', 'moderate', 'severe', and 'very severe'). The multivariate logistic regression analysis was performed using the IBM SPSS(Ver. 25), and a p<.05 was considered significant. Results: The results show that 'fatiguing and painful posture' and 'posture repetitively using hands or arms' were associated with headache/eye strain after controlling for control variables. The total working posture score was positively associated with headache/eye strain. People with higher levels of the total working posture score were more likely to increase the risk of headache/eye strain compared to those of normal(OR: 1.844, 95% CI: 1.549~2.195 for 'mild'; OR: 2.564, 95% CI: 2.152~3.503 for 'moderate'; OR: 4.140, 95% CI: 3.432~4.994 for 'severe'; OR: 7.613, 95% CI: 5.625~10.304 for 'very severe') (p<.05 for trend). Conclusions: These results indicate that inappropriate working postures might play a crucial role in developing headache/eye strain. It is needed to improve the working environment, especially focusing on reducing inappropriate working posture at the organizational level.

• The Korean Journal of Emergency Medical Services
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• v.6 no.1
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• pp.169-184
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• 2002

The purpose of this study was to find out the 119 rescue and first aid's satisfaction level for their occupations, understand the influential factors of the satisfaction level and also analyze the level of each working districts. Therefore to provide basic information of policy decisions to increase the satisfaction level. Date were collected from 400 national the 119 rescue and first aids by questionnaire and using the tools, which has developed by Slavitt, from August 2 to September 30, 2002. The data were analyzed by percentage, mean t-test and ANOVA. Divided 39 items into 7 provinces to find out the satisfaction level of each province, follow as the influential factors of the satisfaction level. 1. The most of the 119 rescue and first aids were satisfying about their occupations as they got 3.02 marks out of 5, which is the full mark. 2. As the results after analyzed the relation ship between the satisfaction level and the general characteristics of analyzed the relation ship between the satisfaction level and the general characteristics of the 119 rescue and first aids, there were not statistically significant differences of sex distinction, age, scholarship, not married and has or have married, grade and qualification. There were statistically significant differences follow as working period, applying motive, moving, seeking a job, working place, an adviser, work overtime and compensation follow as work overtime. 3. It appeared that all the 119 rescue and first aids were satisfying enough about duty itself but were dissatisfying about working condition. As the results; job itself got 4.00, reciprocal action got 3.74, business demand got 3.28, autonomy got 3.06, organization demand got 2.96, pay got 2.43 and working condition got 1.72, each out of 5 full marks. As you see the results, most of the 119 rescue and first aids are satisfying about a job itself but they are dissatisfying about their working condition. Therefore we should formulate a plan that can increase the satisfaction level by improving duty system for 24 working hours per week.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.16 no.11
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• pp.1019-1022
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• 2003

We studied the nematic liquid crystal (NLC) aligning capabilities using the new alignment material of a-C:H thin film as working gas at 30W rf bias condition. A high pretilt angle of about 5$^{\circ}$ by ion beam(IB) exposure on the a-C:H thin film surface was measured. A good LC alignment by the IB alignment method on the a-C:H thin film surface was observed at annealing temperature of 250$^{\circ}C$, and the alignment defect of the NLC was observed above annealing temperature of 300$^{\circ}C$. Consequently, the high LC pretilt angle and the good thermal stability of LC alignment by the IB alignment method on the a-C:H thin film surface as working gas at 30W rf bias condition can be achieved.

• Asia-Pacific Journal of Business
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• v.14 no.1
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• pp.427-437
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• 2023

Purpose - The purpose of this research is to examine the impact of job satisfaction related attributes on the level of life satisfaction of individuals with disabilities. Job satisfaction related elements consist of wage level, job stability, working condition, career development, and communication. Design/methodology/approach - For the data collection, this research made use of The Korean Panel Survey of Employment for people with disabilities, with the study period consisting of 2016-2018, and the number of observations measuring 4405. For the data analysis, the ordinary least square, fixed effect, and random effect regression models were used. Findings - The results indicate that the life satisfaction of people with disabilities is positively influenced by wage satisfaction, job stability satisfaction, working condition satisfaction, career development satisfaction, and communication satisfaction. Research implications or Originality - This study informs policy makers for the design of welfare for people with disability, specifically related to their labor conditions.

• Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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• 2002.05a
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• pp.193-199
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• 2002

Analyzing working conditions with shape characteristics of wear debris in a lubricated machine, it can be effect on diagnosis of hydraulic machining system. And it can be recognized that results are processed threshold images of wear debris. But, in order to predict and estimate a working condition of lubricated machine, it is need to analysis a shape characteristic of wear debris and to identify. Therefor, If shape characteristics of wear debris are identified by computer image analysis and the neural network, it is possible to find the cause and effect of wear condition. In this stud)r, wear debris in the lubricant oil are extracted by membrane filter $(0.45{\mu}m)$, and the quantitative value of shape characteristic of wear debris are calculated by the digital image processing. This morphological information are studied and identified by tile artificial neural network. The purpose of this study is to apply morphological characteristic of wear debris to prediction and estimation of working condition in hydraulic machining systems.

• The Korean Journal of Health Service Management
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• v.9 no.1
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• pp.41-55
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• 2015

Working the night-shift and long working hours may be linked to insomnia. The purpose of this study is to determine the association between night-shift work and long working-hours with regard to subjective insomnia in Korean workers. This study was based on the Third Korean Working Condition Survey (KWCS) conducted on workers in 2011. The total number of individuals included in the analysis was 34,708 workers. Adjusted odd ratios showed statistically effective associations to insomnia. For night-shift work, the results were 2.71 (1.53 - 4.82) for night shift work by experts and managers, 2.95 (2.11 - 4.11) for night-shift work by officers, and 3.90 (2.05 - 7.42) for night-shift work by engineers compared with day duty. For long working hours, the scores were 2.43 (1.68-3.51) for >52 working hours by officers, 1.72 (1.15 - 2.58) for those in sales and service compared to ${\leq}40$ working hours. We suggest the need for Korean workers to target specific groups when creating policies related to reasonable environmental conditions.

• Journal of Technologic Dentistry
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• v.15 no.1
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• pp.27-41
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• 1993

Degree of noise by personal dental laboratory working process and degree of noise by complex dental laboratory working process were measured separtely. The time of exposure to noise greater than 70dB was analyzed. Then, the whole degree of noise in dental laboratory was estimated on the basis of afore-mentioned information. Questionaire were employed to investigate the mental, emotional and physiological effects of noise in dental technicians, The purpose of this study was to provide basic information on keeping dental techneicans who are exposed to noise pollution in good working condition and good health. Results obtained are as follows ; 1. Polishing process in each working part showed high degree of noise greater than 70dB in terms of degree of noise by personal working. 2. Degree of noise by complex working process in each working part was greater than that of personal working process. 3. Time of exposure to noise complex working process the part of porcelain 150min, partial denture 120 min, crown and bridge 100 min, full denture 80 min. 4. Degree of noise by time in dental laboratory was 80dB in general for polishing process and below 75dB for waxing process. 5. Effects of noise on mental and emotional state of dental technicians showed that they felt irritated every day(14%), irritated once in a while(29%) and easily ger mad(19%). 6. Effects of noise on heart and stomach were hyper-gastric acid(38%), gastric ulcer(11%), gastritis(5%), deuodenal ulcer(3%) and weak heart function(32%). 7. Effects of noise in the hearing ability were weak(39%), moderate(33%) and normal(14%) Data presented in this study demonstrated that noise in the dental laboratory exerts profound effect on dental technicians mentally, physiologically and emotionally, in light of the above results, therefore, it appears advisable to devots substantial on the management of working condition and put further(continuing) efforts in the investigation for reducing noise problem.

• International Commerce and Information Review
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• v.8 no.4
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• pp.391-411
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• 2006

The present Study investigated on effect of working time and physical work environment on job satisfaction, and is based on a representative survey carried out in the 15 European Union Member States in 2,000 on behalf of the European Foundation for the Improvement of Living and Working Conditions by Infratest Burke Sozialforschung and a consortium of national fieldwork institutes. In the course of the survey, a total of 21,703 people drawn from the economically active populations in the 15 countries were questioned about their working time, overtime, weekend work, physical work environment, social support of supervisor and co-worker and job satisfaction. Regression analysis and subgroup analysis were employed to examine the hypotheses. It was found that weekend work, overtime and physical work environment associate negatively with job satisfaction. Social support of supervisor and co-worker moderated only relation between working time and job satisfaction. The results provide support for prior quantitative studies partly. Based on these significant research findings, theoretical implications were discussed.

• Proceedings of the KIEE Conference
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• 1996.07b
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• pp.1167-1169
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• 1996

As electrical discharge machinery(EDM) is industrial process which is manufactured by discharge energy, by producing discharge, EDM process finished material at the little micrometer air gap. Especially, EDM is used for the characteristic of heat-resisting material, it puts to use air-space industrial element, confusing shaping material such as jet engine, rocket elements. Working performance. is changed by environment of working, discharge current voltage and duration of discharge pulse. Evaluation of performance working is work speed, clearance smoothing of product surface, wasting of pole. In this paper, this machine is compensated by adaptive controller which corrects the weak points of classical machine which is observed and operated working condition by user in hands. The previous purpose is main object in this thesis. The adaptive controller automatically detect abnormal condition and working conditions. To improve performance, surface smoothing and working speed, the adaptive controller uses fuzzy control strategy. To evaluate performance, this controller is implemented by microprocessor i80c196 and is applied real experimental machine.