• Journal of Applied Reliability
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• v.14 no.3
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• pp.182-190
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• 2014

This paper presents new practical accelerated life test plans with different censoring times at three levels of stress for Weibull and lognormal lifetime distributions, respectively. The proposed plans are compared with the corresponding two-level statistically optimal plans and three-level compromise and practical plans. Computational results indicate that new practical plans have been more precise and effective than the existing three-level plans under a constraint of total testing time. In addition, a procedure to determine useful ALT plans is illustrated with a numerical example.

• Journal of the Korea Institute of Military Science and Technology
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• v.27 no.1
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• pp.51-59
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• 2024

Uumanned aerial vehicle(UAV) systems have been used in various fields including industry and military. According to increasing the number of UAVs, the attention on interoperable UAV systems is increasing. In this paper, we propose the practical design of datalink in interoperable UAV systems. For practical design, we firstly review the operational scenarios in the interoperable UAV system. We then propose the system model of the datalink in interoperable UAV system. Consequently, the technical components such as the design of the network, the link management, the support of the multicast transmission, the support for autonomous mission and flight safety, and the datalink security are derived and reviewed for the practical design.

• Journal of Digital Convergence
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• v.14 no.6
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• pp.449-455
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• 2016

In this study, the survey targeting 180 in-service hair dressers from beauty salons located in Seoul was carried out in order to determine the connection between the practical tasks(scalp, shampoo, cut, blow dry, roll setting, blow dry, coloring) of national hairdresser licensing examination and the practical field. The utilization level of 7 practical subjects tasks was average except for hair coloring which showed a high support of spread and spread-skill tasks. Also, the utilization level of two subjects including haircut and coloring gave a positive influence on the practical skill (p<0.05). Therefore, practical application of haircut which is one of the most important subjects for in-service hair dressers and high quality education for customer satisfaction are necessary and it is necessary to check other subjects which have no influence on the practical field again.

• Culinary science and hospitality research
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• v.13 no.1 s.32
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• pp.129-142
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• 2007

This study is to prevent the applicants who apply for the test from being confused by finding problems in the practical test of the bartender certificate and to detect the best way to find out the scoring factors and allotting marks. The goal of this study is to give the direction of proposing the alternative plans of the qualification test for the bartender by the expert group. The questionaries of the survey were sent and collected from June 20 though 30, 2005. After removing some questionaries that have a problem, the survey was conducted for 20 days from August 5, 2005. The samples of the expert group was set up as 50 persons, but 43 samples were available for the final analysis. Also, 7 selected experts proposed the improvements of the marking lists in the practical test for the bartender certificate throughout 2 in-depth studies from September 15 through 25, 2005. According to the analysis, marking lists of the practical test need to be improved. For the detail categories of the practical test, priority appears as follows : sanitation, service and cocktail mixing. For the proper score in the marking lists of the practical test, 25 points is more proper than existing 33 points for selecting ingredients and stools, 10 points is more suitable than existing 9 points for pouring main ingredients, 30 points is more appropriate than existing 42 points for cocktail mixing, 20 points is more proper than existing 10 points for sanitation and 15 points is more suitable than existing 6 points for service.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.42 no.4
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• pp.349-353
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• 2009

Two feeding trials were conducted to evaluate the soybean meal as a substitute for the fish meal in diet (experiment I), and experimental practical diet and commercial diet (experiment II) for growth of far eastern catfish. In the experiment I, three replicate groups of juveniles (average weight 7.2 g) were fed one of diets containing 0, 10 and 20% soybean meals for 66 days. Survival and final mean weight were not significantly affected by dietary soybean meal levels. No significant differences were observed in feed efficiency, protein efficiency ratio and protein retention of fish fed between 0% (control diet) and 20% soybean meal diets. However, fish fed 10% soybean meal diet showed the lower feed efficiency, protein efficiency ratio and protein retention, and higher daily feed intake compared with fish fed control diet and 20% soybean meal diet. The contents of moisture, crude protein, crude lipid and ash in the whole body were not significantly affected by dietary soybean meal levels. In the experiment II, three replicate groups of juveniles (average weight 7.3 g) were fed either the formulated diet or commercial diet for 66 days. Survival and final mean weight were not significantly different among treatment. Significantly higher feed efficiency, protein efficiency ratio and protein retention, and lower daily feed intake were observed in fish fed experimental practical diet compared with fish fed commercial diet (P<0.05). Proximate compositions of the whole body were not significantly affected by diets. The results of these studies suggest that soybean meal can be used as a substitute for fish meal up to 20% in diet, and the dietary formulation used in the experiment II could be applied to the practical feed for far eastern catfish.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.31 no.3D
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• pp.441-450
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• 2011

Recent construction projects consist of large and complex facilities, which project management information system (PMIS) is used for managing construction cost and schedule. The ministry of land, transport and maritime affairs (MLTM) is using a continuous acquisition and life-cycle support (CALS) system for managing the public construction projects. This study attempts to survey some problems of the CALS system in practical application, and then suggests the new functions to improve practical application of the CALS system. All functions in each menu were analyzed in the practical application aspect. All projects ordered from MLTM should use the CALS system as a PMIS, but the practical application is limited in partial functions and special working group. And the utilization of system is focused on simple tasks and report process. One of main reason is that the system is using numerical data rather than graphical data. This study suggests new functions and a visualized management method that can improve the practical applicability using a 4D object in each current functions.

• Journal of Digital Convergence
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• v.15 no.7
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• pp.191-199
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• 2017

This study aims to confirm the effects of the practical work-oriented educational program applied to the nursing students prior to the commencement of their employment on the ability of the newly recruited nurses in execution of clinical competency, critical thinking and turnover rates. It is a single-group pre-post design and non-equivalent control group design. As for the results of the research, nurses who participated in the practical work-oriented educational program prior to employment displayed an increase in their ability to execute clinical competency and critical thinking capabilities along with the reduction in their turnover rate within 1month after their employment. The results indicate that practical work-oriented educational program form the stage of nursing school years prior to employment at hospital in important and the practical work-oriented educational program attempted as a new means of management of human resources for new nurses can be used as a beneficial program at the time of the development of education programs at the hospitals ans nursing schools.

• Journal of the Korean Operations Research and Management Science Society
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• v.14 no.1
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• pp.59-71
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• 1989

This practical paper puts existing optimal stopping rules for various asset selling situations into a coherent perspective, using simple non-measure theoretical terms. It also provides analytical or numerical solutions when the price offers are beta distributed.

• Korean Management Science Review
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• v.11 no.1
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• pp.59-72
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• 1994

In this paper we examine potentials of a spreadsheet program, one of the most widly available software system, as a mathematical optimization modeling tool. For an illustrative example, a shortest path problem is modeled on Lotus-123 for practical use and an implementational framework and a general guide to the spreadsheet modeling of network analysis is provided.

• Proceedings of the Korean Society for Information Management Conference
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• 2001.08a
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• pp.197-200
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• 2001

말모둠은 디지털화된 텍스트의 모음으로 주로 언어 연구를 위한 자료로 이용되었다. 그러나 말모둠의 구축사례가 늘면서 검색기법이 다양해지고 내용의 범위가 확대되어 말모둠의 역할은 보다 다양해지고 있다. 본 연구는 말모둠의 개념, 구축현황, 웹사이트에서의 제공 내용 등을 조사하여 디지털도서관에서의 말모둠 활용 가능성을 알아보았다.