• Proceedings of the KSR Conference
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• 2005.05a
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• pp.90-96
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• 2005

The existing safety-management manual is confined to list data based on regulations, and only provide ways to prevent accidents/incidents for particular work which accidents occur frequently. As it is difficult to understand the complete process involved the work, we can not expect the manual to function as a guide to prevent unfortunate events. When establishing WBS(work breakdown structure) of railway line engineering, consideration of the characteristics of train operation will enable many benefits. Therefore in this research it is conducted to materialize it in the manual. Main contents in this research are to review the way that change complete work performance process and person in charge of different tasks into WBS(work breakdown structure), and trough the newly developed WBS , the ways to improve roles and functions of the manual which Korean Railroad made are recommended.

• Journal of Korean Clinical Nursing Research
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• v.17 no.3
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• pp.297-306
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• 2011

Purpose: This study was to identify the effects of a manual booklet as an aid to clinical performance in newly graduated nurses. Methods: The research design was a nonequivalent control group pretest-posttest design. The study was performed from June 14 to September 17, 2010 with an experimental group (n=23) and a control group (n=22) using a questionnaire with 45 new nurses who graduated from nursing colleges in 2010, and had less than 12 months work experience at a general hospital in B city. A pocketable nursing-work manual booklet was provided for the experimental group nurses so that they could use it as a reference in the work place. Results: Scores on performance of nursing work showed a significant difference between the experimental group and control group (t=-5.257, p=.001). Conclusion: Results of the present study indicate that a manual booklet of nursing work is very helpful in improving the clinical performance of new nurses. New nurses, who have some knowledge of nursing learned at school but have less clinical experience, can be helped effectively with a practical manual booklet for improving their work performance.

• International Journal of Highway Engineering
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• v.16 no.3
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• pp.109-117
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• 2014

PURPOSES : This study analyzes the available working time at work-zone on the Expressway in accordance to the new capacity manual. METHODS : Sensitivity analysis on variables were conducted to calculate the adjusted capacity at work-zone based on previous researches. RESULTS : The main factors which affect available working time at the work-zone were its capacity, number of lanes, terrain and lane width. Other factors have minimal effect on the available working time. Based on the analysis, a calendar of lane closures was suggested. CONCLUSIONS : A series of studies concluded that the capacity at work-zone in the new capacity manual reduced to 76-82% of the existing manual. As such, the available working time decreased. Furthermore, the factors affecting the available working time needs to be considered when making a plan to rehabilitate the distressed pavement.

• Korean Journal of Human Ecology
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• v.16 no.1
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• pp.137-143
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• 2007

The purpose of this study is to prove the work efficiency of PDS by measuring the work time on the process of pattern making of woman's tailored jacket. Also compared to the manual work time, PDS work efficiency is estimated according to experience difference. The YUKA CAD system was used. Through analysis of PDS Process, work time was measured by stop watch. Also the appearance of the 2 jackets was evaluated by a pool of evaluators consisted of graduate students and experienced professional modelist. The results were as follows: The work efficiency of PDS is higher than the work efficiency of manual work. There were significant differences of work time between work types in the expert and inexpert group. A study compared the work efficiency by PDS work type with those by manual work type according to experience difference and found that the work efficiency by PDS in the expert group was 25.3%, in the inexpert group was 35%. There were significant differences of work time between experience groups in PDS work, the work efficiency of expert group to inexpert group in the total pattern making time by PDS was 36.7%. There were no significant differences of appearance of tailored jacket between work types.

• Journal of the Korea Safety Management & Science
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• v.24 no.2
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• pp.11-16
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• 2022

When picking up cargo, workers manually load and unload the cargo. Workers have different intensity of work depending on the amount and weight of cargo. In particular, as the intensity of manual work increases, workers are exposed to cumulative traumatic diseases. A manual for picking safety work for workers cargo handling in the distribution center is required. In this study, the worker's picking safety work based on the cargo volume and weight was presented as an experimental design model. Like the research results, the disease begins when the worker feels the number of pains presented by the model.

• Journal of the Korean Society for Precision Engineering
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• v.23 no.12 s.189
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• pp.38-45
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• 2006

In this work, optimal finish machining condition considering total time for mold or electrode manufacturing was investigated. First, manual finishing time according to the machining condition was analyzed for the work material. The effect of runout and phase shift of tool path on surface finish was also considered in those analyses. Secondly, optimal manual finishing processes were determined for various machining conditions. Finally, finish machining time and corresponding manual finishing time were taken into account for the estimation of the total time of manufacturing mold. Though small feed per tooth and pick feed reduced the manual finishing time, the finish machining time increased in such conditions. With a machining condition of feed per tooth of 0.2 mm and pick feed of 0.3 mm, the minimum total time of manufacturing mold was achieved in our machining condition.

• Journal of the Korean Society of Safety
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• v.18 no.2
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• pp.125-131
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• 2003

In recent years, the Korean Army made use of fork-lifters or conveyors when loading and/or unloading military material in order to prevent accidents and to promote efficiency of military material handling activities. However, in troops smaller thin battalions, manual material handling activities are still committed for many reasons. In this thesis, a brand new loading/unloading device for efficient military material handling or manual workers was developed, and its validation study was conducted through objective assessment based on electromyography, subjective assessment based on Body-Map technique developed by Corlett and Bishop, and finally work performance comparison. The results of EMG analysis showed that muscular workload improved by 24% when using the device compared to manual work without the device, and complain of each body part was remarkably reduced. In addition, remarkable effectiveness enhancement was observed in the work performance. Consequently, it could be concluded that ergonomic devices like one developed in this research should be studied further in the ergonomic sense as well as in the economical sense.

• Journal of the Korean Society of Safety
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• v.14 no.4
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• pp.93-99
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• 1999

A try was carried out to reduce lead time of die manufacturing. That is to make manual machining and finishing work time shorter by improving CAD/CAM modeling methods, so called with "separate modeling" and "relief modeling". The manual machining and finishing manual work time were reduced adapting the novel CAD/CAM modeling methods. Ultimately we accomplished much reduction of the lead time of die manufacturing.f die manufacturing.

• Journal of the Korean Society for Precision Engineering
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• v.23 no.2 s.179
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• pp.172-180
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• 2006

Although there existed many types of manual/power hybrid wheelchairs, their use was not widespread because of their inconvenience in converting drive system and in folding frames. To carry a wheelchair in the car or to convert driving methods, some hard work of disassembling or exchanging wheels was required for most of currently available hybrid wheelchairs. In this study, the standard foldable manual wheelchair was reformed to a power wheelchair by installing the newly developed Axial Flux Permanent Magnet(AFPM) type of brush less direct current(BLDC) motor on each rear hub of wheelchair. This wheelchair could be driven by manual or electric power without exchanging. wheels, thus no additional work was needed for carriage or for power conversion. The developed wheelchair was evaluated for durability, stability, maneuverability, cost, and reliability in accordance with the Korean standards. The results indicated that the developed hybrid wheelchair was good enough for commercialization comparing to other imported wheelchairs.

• Journal of the Korean Society of Safety
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• v.11 no.4
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• pp.127-134
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• 1996

Recently, in Korea the birthrate is declining and the average life span has been increasing. Thus, compared to the previous periods nowadays, older people are required to work. Even elderly people are rejoining the workforce. Korean companies set the retirement age between 55 and 60 years of age, however, accidents occur frequently. Thus, it becomes necessary to evaluate the ability of the elderly person. Since the required function of the worker varies from job to job the evaluation of the capability must also be conducted according to the desired functions. One of the methods used in this study is the continuous control knob to evaluate the tracking control ability to investigate the relationship of manual dexterity and age. The result of the study Indicates that the manual dexterity decreases with age. However, there are differences among individuals. The individuals lifestyle affected the manual dexterity of that individual. As a result, a company may use the manual dexterity as an measure to evaluate the elderly persons work ability.