• Journal of the Ergonomics Society of Korea
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• v.26 no.4
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• pp.41-47
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• 2007

This paper suggested the best work conditions including short break time and the number of mouse clicks on the computer work for the prevention of MSDs on VDT work. Fatigue measures included EMG based parameters. The short break time conditions are grouped into 7, 15, and 30 seconds after every work for 10 min and the number of mouse clicks are divided into 10, 20, and 30 clicks/min. The result of the ANOVA of the shift value of %MVC(Maximum Voluntary Contraction) showed the following: 1) There was a considerable difference as regards to the break time except the number of mouse clicks on the upper trapezius muscle(p$<$0.05). The best conditions were shown in 15 sec after every 10 min and 30 clicks/min. 2) There were considerable differences as regards to the number of mouse clicks except the break time on the extensor digitorum muscle and extensor carpi ulnaris muscle(p$<$0.05). The best conditions were shown in 7 sec after every 10min and 10 clicks/min.

• Journal of the Korean Society of Safety
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• v.23 no.2
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• pp.30-36
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• 2008

This paper suggests the best work conditions, including short break time and number of mouse clicks on a computer, to prevent MSDs(Musculoskeletal Disorders) on VDT(Visual Display Terminal) work. Discomfort measures are calculated according to the Borg's CR-10 Scale. The short break time conditions are grouped into 7, 15, and 30 seconds after every 10-minute work period and the number of mouse clicks are divided into 10 clicks/min, 20clicks/min, and 30clicks/min. The result of the ANOVA on the shift value of subjective discomfort shows the following: 1) Regarding the break time and the number of mouse clicks, there are statistical differences between the measured values for the neck and the wrist(p<0.05). 2) Regarding the number of mouse clicks, there are statistical differences between the measured values for the shoulder and the forearm(p<0.1). 3) Regarding the break time and the number of mouse clicks, there are no statistical differences between the measures values for the eyes, upper arms and back(p<0.1).

• Korean Journal of Labor Studies
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• v.23 no.1
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• pp.129-164
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• 2017

This article is an exploratory study on the recent growth of short-hours part-time work in Korea. The short-hours part-time work has been rapidly growing among low-educated women over sixty, particularly among bereaved or divorced women, contrary to the expectation of the government that encouraged the part-time work by means of work-family balance for working mothers or middle-aged women who experienced career interruption. The short-hours part-time jobs are concentrated in social service industry, mostly elderly care service jobs, and their working conditions are extremely poor, mostly low-wage jobs with no social insurances except for health insurance. In this study, we discuss why the short-hours part-time work has grown so fast in Korea since the mid 2000s. Using various governmental statistics, we examine the effects of the labor demand and supply situations during the time period, the legal context that is related with the exempt clause of the labor law, and the institutional context related with the government's public job creation projects for the elderly. We suggest some public policies needed to slow down the growth of the short-hours part-time jobs and to elevate their working conditions.

• Journal of Korea Multimedia Society
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• v.23 no.7
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• pp.840-849
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• 2020

Walt Disney Feature Animation released high quality films such as 'Frozen', 'Big Hero 6', 'Wreck-it Ralph', 'Zootopia', 'Moana', 'Frozen 2' and not only got high score in box office but showed great CG and visuals. However, making feature animation requires a lot of time, money, and efforts so it is very important to support studios' artists to finish each show within limited budget and time. This paper shows artists' training program such as 'Short Circuit' and 'Bootcamp' that walt disney feature animation provides their artists to improve their creativity and do their jobs artistically and efficiently. Disney's training program not only provides artists various training classes but gives them chances to work on short animation which enhances artistic skills and enable them to work in different departments and experience different tasks. This paper also explains some training cases of CG studios in South Korea and Disney Animations' in-house tools.

• 한국연소학회:학술대회논문집
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• 2015.12a
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• pp.161-164
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• 2015

A short kinetic mechanism for premixed benzene/air flames was developed with a reduction method of Simulation Error Minimization Connectivity Method(SEM-CM). It consisted of 38 species and 336 elementary reactions. Flame speeds were calculated and compared with those from full mechanisms and experiments of other researcher. Those comparisons are in good agreement between the full mechanism and the short mechanism at high pressure condition. In numerical work the running time with the short mechanism was over 10 times faster than one with the full mechanism.

• Journal of Families and Better Life
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• v.9 no.2
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• pp.171-190
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• 1991

This study focused on time use and the influencing factors of employed wives. Its aims are specified as follows.:1) to figure out the tendency of time use spent on a holiday and weekday by employed wives ; (2) to find out factors influencing the amount of time in each domain spent on each day. The samples were composed for 396 employed wives living in Seoul and Kwangju city who had the eldest child less than 18years old. were sampled based on their work kind, work status, and residential quarter. The results are as follows; 1) Employed wives spend 423 minutes a weekday, and 513 minutes a holiday on the sleep and 522 minutes(weekday ), 618 minutes (holiday) on the total Physiological time 599 minutes (weekday), 72 minutes(holiday) were devoted to the employed time. compared to 214 minutes. 395 minutes for the housework Finally 103 minutes and 349 minutes were assigned to leisure time. Compared with the research results in Japan and the United States, this shows large difference. Korean wives; work time is excessively too long while the time for leisure and psysiological time is too short, which means the life style of Korean wives ti too simple and monotonous. 2) Social demographic variables(such as work status, education, income, wive's relative income rate, family type. family number, the younger child's age, and etc. )and variables connected with employment (such as employed work time and employment motivation) significantly differentiate the time use. A wive with higher education, employment status, and income level, spends more time for the psysiological , leisure time, and manegerial housework time, while spending less time for work and physical housework.

• Safety and Health at Work
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• v.5 no.4
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• pp.186-190
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• 2014

Background: Physical exercise during leisure time is known to increase physical capacity; however, the long-term effects on work ability and work strain are inconclusive. The aim of this study was to investigate the effects of a 6-month physical exercise program on work ability and work strain after 6 months and 30 months, among women with menopausal symptoms at baseline. Methods: A questionnaire including questions on work ability and work strain was mailed in the beginning, at 6 months and after 30 months after the intervention to occupationally active women participating in a randomized controlled study on physical exercise and quality of life. The intervention included aerobic exercise training 4 times per week, 50 minutes per session. Work ability was measured with the Work Ability Index (WAI) and with questions about physical and mental work strain. Results: Women aged 47-62 years (N=89) who were occupationally active at baseline were included in the analyses. The increase in WAI from baseline to the end of the exercise intervention (6 months) was statistically significantly greater among the intervention group than among the control group (regression coefficient 2.08; 95% confidence interval 0.71-3.46). The difference between the groups persisted for 30 months. No significant short- or long-term effects on physical and mental work strain were found. Conclusion: A 6-month physical exercise intervention among symptomatic menopausal women had positive short-term as well as long-term effects on work ability.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2021.05a
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• pp.168-169
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• 2021

Maintenance is carried out over a long period of time, and various documents are utilized in the maintenance work. In maintenance work which is progressed simultaneously in a short period of time, it is important to provide relevant information to the parties in a timely manner. As the types of work increase, manager needs more time and effort to select and utilize the documents. It is necessary to have an information system that supports the person in charge by grasping work procedures for each construction and providing the necessary documents and information for that step. This paper proposes an process based nexus model that can provide necessary documents to the parties to the work steps by linking the maintenance work process and BIM. Through the nexus model presented, manager can efficiently acquire the necessary documents and utilize them for the construction works currently being carried out.

• Journal of the Korean Home Economics Association
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• v.35 no.1
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• pp.1-14
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• 1997

The purpose of this study is to investigate time use of married female clerical workers and their husbands. Data for 143 couples were gathered from using structured questioinaire and time dairy. The analysis of time use data was carried out two approaches. They are the amount of time spent and the distribution of time for dailly activities. And also the couples' perceptions how restricted their long time labor to their family life was analyzed. The results were shown as follows: (1) Married female clerical workers and their husbands have long labor time and their physiological and leisure time is too short. This means the patterns of their time use are very unbalanced type. (2) Wives worked longer than husbands on total labor with a large sexual difference in household works.(3) Couples perceived that wives' work more negative affection on their family life than husbands' work.

• International Journal of Safety
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• v.3 no.1
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• pp.27-31
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• 2004

Some of the petroleum products contain benzene which is well known as a confirmed human carcinogen. For example, gasoline products contain benzene ranging up to several percents by weight. High exposures to the benzene and other organic solvents would be likely to occur during intermittent tasks and or processes rather than continuous jobs such as sampling, repair, inspection, and loading/unloading jobs. The work time for these jobs is various. However, most of work time is very short and the representative time interval is 15 minutes. Thus, it is preferable to do exposure assessment for 15 minute time weighted average which is known as a short time exposure level(STEL) by ACGIH rather than for 8-hours TWA. It is particularly significant to the exposure monitoring for benzene since it has been known that the exposure rate plays an important role to provoke the leukemia. Due to the large variations, a number of processes/tasks, the traditional sampling technique for organic solvents with the use of the charcoal and sampling pumps is not appropriate. Limited number of samples can be obtained due to the shortage of sampling pumps. Passive samplers can eliminate these limitations. However, low sampling rates resulted in collection of small amount of the target analysts in the passive samplers. This is originated the nature of passive samplers. Field applications were made with use of passive samplers to compare with the charcoal tube methods for 15 minutes. Gasoline loading processes to the tank lorry trucks at the loading stations in the petroleum products storage area. Good agreements between the results of passive samplers and those of the charcoal tubes were achieved. However, it was found that special cautions were necessary during the analysis at very low concentration levels.