• KSCE Journal of Civil and Environmental Engineering Research
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• v.33 no.6
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• pp.2519-2528
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• 2013

The standard of estimate is being used as basic material for appropriating construction expenses of public institutions and private institutions. The present thesis aims to propose a new form of a standard of estimate and a calculation method of work amount of equipment by targeting a representative construction type selected at river reservation work. The present thesis expects that the convenience of users can be expanded by improving applicability of a standard of estimate and simplifying a calculation process of work amount of equipment in a process planning stage so that the provision of work crew lineup information and daily productivity information is possible by a standard of estimate. In case of river conservation work, because the variables called work conditions act very largely, there exists much difficulty for generalizing productivity information and work amount of equipment, but if its accuracy could be enhanced by improving continuous productivity information and work amount information of equipment, the simplification of process planning establishment and cumulative process through a standard of estimate would be possible.

• Korean Journal of Construction Engineering and Management
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• v.12 no.6
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• pp.42-53
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• 2011

This study is to present a method of compiling consistently accurate construction cost estimates in minimum of time. There are two kind of applications for estimating system based on quantity-per-unit and the daily work-crew. The former system is still applied 45% as a estimating method to construction job site by the second half of 2010. However, it is necessary for quantity-per-unit to complement the defect of standard integrating specification and improve the integrating method to the various construction conditions. The later system is intended to represent a standard or basic core which can be adopted in many type of construction estimating used across the wide variety of construction in advanced countries. In this study daily work-crew based on productivity is applied to the representative B.O.Q Item in road project. These results are compared to productivity of Japan and U.S.A estimated under the similar circumstances.

• Journal of Convergence for Information Technology
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• v.10 no.8
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• pp.259-264
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• 2020

This study classified the hairstyle types of flight attendants in flight on A airline, the largest low-cost carrier in Asia. The cabin crew does not maintain a constant commute time, but the hairstyle will change with the diversification of commute time according to flight schedules. Therefore, in the case of a female cabin attendant, if there is a lot of time before going to work, a hairstyle such as a up hair style may be maintained. However, when you have less time to trim your hair, keep your daily hairstyle, such as one-length cuts and gradation cut, or keep your hair ponytail-like. The cabin crew maintains a variety of hairstyles, but the color of the hair prefers natural brown or slightly lighter dyeing, and the lighter hair due to excessive bleach is not preferred.

• Korean Journal of Construction Engineering and Management
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• v.13 no.1
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• pp.44-52
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• 2012

In the cost management of public construction projects, it is an important issue to develop an adequate cost data for estimating the predetermined amount by various methods. For a long time, a standard of estimation in korea is used as a basis for estimating the predetermined amount of public construction. However, they did not have a reasonable cost data based on a labor and equipment productivity analysis. For this reason, it is difficult to make a reasonable and efficient estimation of the costs, and this situation presents an urgent need for more accurate cost data to use in an early phase. This study analyzed the productivity of form work by the CYCLONE model, and presented the model on the number of optimal labor through sensitivity analysis. This CYCLONE model can be useful in analyzing productivity on the various sizes of form. Also, the regression model to estimate the daily output can be used in predicting the amount of labor. Considering the work duration in the regression model is expected to make the daily output estimation much more accurate.

• Journal of Navigation and Port Research
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• v.42 no.4
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• pp.253-266
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• 2018

This study aims to develop the occupational Korean language curriculum for the foreign seafarers working on the Korean coastal vessel. In the recent years, the employment of foreign seafarer has increased significantly to meet the shortage of the Korean seafarers. As the number of the mixed-crew vessels has increased, communication and cross-cultural awareness among different nationalities have emerged as an important issue. Therefore, the foreign seafarers are obliged to undergo Korean language training to help them in adapting to the Korean vessel according to the 'Guidelines of foreign seafarers management'. However, the time for language training is very short, and there are no systematically developed textbooks. Therefore it is essential to develop curriculum and textbooks for foreign seafarers to acquire training in fundamental Korean dialogues for their daily life and work on board. This study was carried out using the DACUM method to draw core tasks from various works and tasks on board. Firstly, the existing Korean language teaching materials for the foreign crew should be analyzed. Secondly, the job analysis committee should be organized based on the analysis. Then, the list of the tasks for the crew through the committee workshop should be prepared. Thereafter, a questionnaire survey should be carried out to identify the level of importance and frequency by the seafarers working on the coastal vessel. Finally, the core curriculum of the Korean language should be developed for foreign deck crews.

• Journal of Navigation and Port Research
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• v.39 no.1
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• pp.37-43
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• 2015

At marine construction sites, there are problems with regard to dispute on the responsibility of safety management of chartered barge and its legal issues. In general, demise charter with crew is used for barge charterparty which is committed to the marine construction. Although Chapter 5 of the Korean Commercial Act enact provisions regulating a Time Chargerparty and a Bareboat Charterparty, it is difficult to clarify where the responsibility lies with regard to the safety control of the chartered barge. For this reason, disputes on accountability arise when accident occurs in effect. As a result, parties of the charterparty shift the responsibility on each other and there is increased risk for occurrence of similar accidents. There is no legally required qualification for a head of barge workers who is in charge of barge management. It is not possible to demand the head of barge workers to take charge of tasks which requires professional judgment as a marine technician considering his daily work scope. Furthermore, the barge committed to the marine construction as a form of bareboat charter or equipment charterage is an object which should be managed by safety supervisor of the charterer's marine construction. The charterer bears a duty to manage the safety of the barge. Therefore, the charterer is generally liable for the damage incurred in the course of using the chartered barge.

• Journal of the Korea Institute of Building Construction
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• v.14 no.4
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• pp.292-300
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• 2014

The construction progress control is very important because there are many unexpected factors affecting time schedule delay and cost overruns. A complicated measure including item quantity and inherent time and costs is used to monitor the progress. Another element to be considered is a productivity, which is cost effectiveness because productivity is primarily measured by the costs. Productivity is stated as constant in-place value divided by inputs such as worker-hour. The main purpose of this paper is to analyze the productivity of structural formwork using a 3D BIM. In order to achieve the research objective, an integrated model of a BIM with a daily foreman's report is developed. The quantities being extracted from a 3D model and information are integrated with manpower utilized. The developed model is applied to a case project to measure and analyze the productivity in terms of individual building and work crew team. The results are discussed and further research topics will be addressed.