• Journal of the Korea Institute of Building Construction
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• v.5 no.4 s.18
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• pp.131-137
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• 2005

Lately Construction industry has been depressing by hard construction market circumstance. Construction company, especial at this time, makes more rationalize the management of inside Company and Construction field. In this study we are to present the method of calculation reasonable duration at Reinforced Concrete Work. For the study first make up a question at field workers, then sampling the Form workers based the question. Second, We are using Work Analysis Method analysing the worker's work-method and Time. And then using the result of analysis, measure the Productivity of Form work. The productivity of Form work is used the basic data of duration at Reinforced Concrete Work

• Proceedings of the Korean Institute of Building Construction Conference
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• 2005.11a
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• pp.149-155
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• 2005

Lately Construction industry depressed by hard construction market condition. So Construction company, especial at this time, make more rationalize the management of inside Company and Construction field. So in this study we are to present the method of calculation reasonable duration at Reinforced Concrete Work. For the study first make up a question at field workers, then sampling the Form workers based the question. Second, We are using Work Analysis Method analysing the worker's work-method and Time. And then using the result of analysis, measure the Productivity of Form work. The productivity of Form work is used the basic data of duration at Reinforced Concrete Work

• Journal of Korean Academy of Fundamentals of Nursing
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• v.21 no.4
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• pp.403-412
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• 2014

Purpose: Shift work disrupts the synchronization between the human biological clock and the environment. Sleep disturbances are common for shift work nurses, and may threaten patient safety. This study was done to investigate the sleep characteristics and medication errors (ME) of intensive care unit (ICU) nurses who work shifts, and ascertain if there is an association between these factors. Methods: Data were collected using a self-report questionnaire from 126 ICU nurses on three shifts. Collected data included their sleep characteristics including sleep patterns and sleep disturbances, and ME for the past 2 weeks. Results: There were significant differences in sleep duration and sleep latency according to shift. Day shift nurses had the shortest sleep duration, and their sleep latency was the longest (about 49 minutes) compared to nurses on evening and night shifts; 54% reported sleep disturbances, 16% experienced ME, and among these nurses 50% were on the night shift. Logistic regression analysis revealed significant associations between nurses' sleep duration and ME (adjusted OR 0.52 [95% CI 0.32-0.85]). Conclusions: The results confirmed that shift work nurses in the ICUs experience sleep disturbance, and that less sleep is associated with ME.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.8 no.1
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• pp.5-14
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• 2002

Objectives : In order to investigate industrial fatigue due to visual display terminal (VDT) work of post office. Methods : The questionnaire survey for subjective symptoms of fatigue was carried out on 39 post office clerks who had been engaged in VDT work for various length of work hours. The questionnaire comprised three groups of 10 items each, representing dullness and sleepiness, difficulty in concentration and bodily projection of fatigue. Results : The scores of dullness and sleepiness was 16.62, scores of concentration difficulty was 16.35, those of bodily fatigue was 16.23, and total scores was 49.21. Fatigue scores was significantly associated with age and work duration, VDT of work hours, ventilation, illumination, nosie. Conclusions : Data from this study support a statistically significant association between age and scores of dullness, scores of concentration difficulty, between work duration and scores of dullness, scores of bodily fatigue, between VDT of work hours and scores of bodily fatigue.

• Journal of the Korea Institute of Building Construction
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• v.14 no.5
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• pp.487-495
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• 2014

Shortening the construction duration of structural frame work is extremely important because the work accounts for a major percentage of all cost and duration in large projects. For this reason, new construction methods to reduce the duration of structural frame work are being continuously studied and developed. A PSRC composite column, which uses steel angles instead of H-beams, has the advantages of flexural strength and ductility. Moreover, with this PSRC technique, conventional work for reinforcing bars in columns in practice can be skipped. However, one limitation exists in which the form work is still required. This research proposes a Form-LPSRC column method that is prefabricated with the column frame that includes permanent forms attached. Feasibility was examined with mock-up specimens and finally, the technique applied to real practice. Compared to the conventional SRC column method, this study demonstrated that the proposed technique has many advantages in construction duration, cost, quality, safety and environment.

• Korean Journal of Social Welfare Studies
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• v.45 no.2
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• pp.123-146
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• 2014

This study aims to investigate the employment duration and the probability of quitting the job at first return-to-work of injured workers. This study collected data with structured questionnaires and finally included 515 injured workers. The Kaplan-Meier method is used for describing the employment duration, and the Cox regression is used to identify significant factors on the probability of quitting the job at first return-to-work. The results show that among the all respondents, the 5.65% quitted the job within 1 month, 14.14% within 3 months, 23.7% within 6 months, and 32.81% within 1 years. The Cox regression results show that the probability of quitting the job at first return-to-work is significantly affected by age, marital status, education, employment period when happened the accident, job retention, income change, and classification of diseases. As a result, some implication and policies are suggested for the return-to-work and employment durability of injured workers.

• The Journal of the Acoustical Society of Korea
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• v.16 no.2E
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• pp.62-69
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• 1997

The effect of pitch on tone durations was studied in several poeces of music. In previous work it was found that higher pitched sounds, of a given duration, were perceived to be of longer duration. That work however, was not undertaken in a musical context. The present work was done to determine whether the previously observed trend was also apparent in musical performances. Several measurements were undertaken. One of these involved analysing the recorded performance duration of notes in several performances of the Mozart Flute Quartet in A-mojor, K.298. Performed durations were also obtained from a Bach Flute Sonata and a Brahms Clarinet Quintet. An analysis of the musical performances revealed that while there were individual differences and exceptions in notes, the musicians tended to play higher notes significantly shortened.

• Proceedings of the Korea Water Resources Association Conference
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• 2009.05a
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• pp.2210-2214
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• 2009

This paper summarizes progress on work under the Asian Pacific FRIEND(Flow Regimes from International Experimental and Network Data - APFRIEND) initiative of the International Hydrological Programme (IHP) of the United Nations Educational, Scientific and Cultural Organisation (UNESCO) from 2005 to 2009. The results of initial work on Rainfall Intensity Duration Frequency (IFD) have just been published as a volume by UNESCO. The results of work to date is concisely presented and observations made about lessons learnt on how to successfully integrate work from nine diverse countries with differing approaches to both hydrology and water resource management structures and on some possible directions for future work.

• Safety and Health at Work
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• v.1 no.2
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• pp.158-166
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• 2010

Objectives: This study aimed to find gender distinctions in terms of the sociology of the population; to determine work-related factors; to analyze gender differences in daily living, work, sports, and art performances; and to identify gender-related factors that limited performance of daily living and work activities. Methods: A questionnaire was designed that included disabilities of the arm, shoulder, and hand (DASH), accident history, disease history, work duration at current workplace, marital status, job satisfaction, job autonomy, and physical demands of the job. Out of 1,853 workers surveyed, 1,173 questionnaires (63.3%; 987 males, 186 females) included responses to DASH disability and DASH optional work and were judged acceptable for analysis. Results: Upper extremity functional limitation during work and daily living was higher for females than males. The limitations for males increased according to their household work time, accident history, work duration, job satisfaction, physical demand, and job autonomy. Meanwhile, female workers' upper extremity discomfort was influenced by their disease history, job satisfaction, and physical demands. In addition, the size of the company affected male workers' upper extremity function, while marriage and hobbies influenced that of female workers. Conclusion: This study addressed sociodemographic factors and work-related factors that affect each gender's upper extremity function during daily living and working activities. Each factor had a different influence. Further studies are needed to identify the effect that role changes, not being influenced by risks at work, have on musculoskeletal disorders.

• Journal of Labour Economics
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• v.27 no.3
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• pp.25-52
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• 2004

The work history of the workers injured in industrial accidents was recomposed by combining the database on compensation for industrial accidents with the database on employment insurance among those who were newly classified as disabled during the period from 1998 to 2000. It shows that the injured workers mainly returned to the original workplaces, and such workers had higher job retention rate. It is in contrast with the higher separation rate of the workers who started to work at the new workplace after medical recuperation. And it is found that 61% left or lost their jobs out of the injured workers who returned to work, and 77% of the job separators had job tenure less than one year. The analysis based on competing risks model shows that the workers at the smaller workplace have the shorter the employment duration, and the longer job-searching period has the negative effect on the employment duration of the job losers. In addition, the longer employment duration at the first job after medical recuperation is more effective on the reemployment and job stability after separation.