• Journal of Home Health Care Nursing
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• v.10 no.2
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• pp.113-122
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• 2003

Purpose: This is a simple survey for discussion about cost analysis methodological issues in home care nursing service studies. Method: The subject of this study were articles published in Korea from 1961 to August, 2002, and searched by key word 'cost' and 'nursing' from various DB(National Assembly Library, The National Library of Korea, RICH etc). Finally, 13 articles were collected. Result: 1) The major type of cost analysis studies was a cost comparison or a simple cost study. 2) The important methodological weaknesses were as followers; (1) few studies were suggested cost analysis framework or analytic perspective, (2) it ,was not enough to describe for basis of selection of cost/effectiveness items, (3) few studies were done by sensitivity analysis. Conclusion: These above results will be used to develop a more proper cost analysis methodological framework in home care nursing services and also to contribute as a guideline for further studies.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.8 no.4
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• pp.1-9
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• 1988

In the previous paper, the discussion has been made about theoritical estimation of Load-Deformation Response for reinforced concrete torsional members in the over-all load region. It is the purpose of this investigation to introduce pure torsional testing method, to discuss experimentaly the effects that the change of the wall thickness and the reinforcement ratio contribute to the torsional strength and the crack characteristics of reinforced concrete members.

• Journal of Mechanical Science and Technology
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• v.19 no.9
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• pp.1781-1789
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• 2005

In order to realistically predict the combustion characteristics of the oxy-fuel flame, the present study employs the non-adiabatic flame let approach. In this combustion model, the detailed equilibrium chemistry is utilized to accurately account for the thermal dissociation as well as to properly include the radiative cooling effects on the detailed chemistry. Numerical results indicate that the present approach has the capability to correctly capture the essential features and precise structure of the oxy-fuel flames. In this work, the detailed discussion has been made for the characteristics of oxy-fuel flames, the capability and defect of the present approach and also uncertainties of experimental data.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2001.05a
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• pp.954-960
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• 2001

Axial fans are widely used in heavy machines due to their ability to produce high cooling of engines. At the same time. the noise generated by these fans causes or serious problems. This work is concerned with the low noise technique of discrete. The prediction model. which allowed the calculation of acoustic pressure at the frequency and it's harmonics, has been developed by Farrasat and the Helmholtz-Kir. The newly developed Helmholtz-Kirchhoff BEM for thin body is used to calculate the sound field of the fan that is located in a engine room. To calculate the unsteady resultant force over blade. Time-Marching Free-Wake Method are used. The fan noise of fan sys unsymmetric engine-room is predicted. In this paper. the discussion is confined to and discrete noise of axial fan and front Part of engine room in heavy equipments.

• 한국공간정보시스템학회:학술대회논문집
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• 2004.05a
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• pp.245-251
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• 2004

This paper discuss the conditionally sampled actual wind pressure distributions causing peak quasi-static wind loads in the large span roofs using the wind pressures at many locations on dome models measured simultaneously in a wind tunnel. The actual extreme pressure distributions are compared itk load-response-correlation (LRC) method and the quasi-steady pressure distributions. Based on the results, the reason for the discrepancy in the LRC pressure distribution and the actual extreme pressure distribution are discussed. Futhermore, a brief discussion is made of the equivalent static wind load estimation for the large span roofs.

• Journal of Positioning, Navigation, and Timing
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• v.4 no.1
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• pp.17-23
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• 2015

With the increase in the risk of GPS jamming, the development and application of anti-jamming GPS techniques have been actively performed. As the objective performance verification of developed techniques is important, equipment development for verification and discussion on anti-jamming performance test method and procedure have also been conducted. However, most tests are related to the specification of equipment and therefore detailed procedure of the performance verification of an anti-jamming system needs to be developed. In this study, requirements for anti-jamming performance verification were described, and test configurations and performance evaluation items depending on three kinds of test methods (lab test, basic outdoor test, and chamber test) were suggested for anti-jamming performance verification.

• English Language & Literature Teaching
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• v.13 no.4
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• pp.233-252
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• 2007

The aim of this study is to propose a systematic way of evaluating competing ELT textbook series. Three stages of evaluation procedures were employed: A sample of two sets of English textbook series for young learners were first analysed by five trained textbook evaluators using a checklist. Second, based on the results of analysis, evaluative discussion was carried out. Third, two independent evaluators conducted impressionistic evaluation on the series. The procedure employed in this materials evaluation process can be adapted in choosing series of textbooks. Since not many studies have dealt the evaluation of textbook series by multiple evaluators, the method presented in this study can be referred to and applied by materials evaluators in other contexts.

• Proceedings of the KSR Conference
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• 2010.06a
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• pp.2270-2277
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• 2010

Recently the role of a railroad is emphasized as the imprortant part for growth for the low carbon green growth and the social consensus about the railroad investment is actively progressed. The various social economic value in which the travel demand change over of the environment-friendly railroad system can bring becomes with public debate as much as a discussion is not any more necessary. In this research, the influence that it recognized that the travel time improvement by the high speed rail was the most important element among many method that it can increase the railroad use efficiency in which it connects the interregional major cities and the railway travel time improvement reaches to the rate of railway and road travel time, and the environment like the carbon emission quantity was comprehensively inquired.

• Journal of Korean Society for Quality Management
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• v.23 no.2
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• pp.10-27
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• 1995

This paper illustrates a method of developing a function of quality costs in manufacturing systems. It begins with a discussion of the problem statement of this research. A review of existing literatures related to quality costs and economic design of quality inspection methods are discussed. Next mathematical models that quantify the production cycle time and quality costs are formulated. This paper ends with an example that demonstrates the usefulness of the model and highlights the importance of using a system approach. The main contribution of this work is the more realistic considerations of the four types of quality costs (prevention cost, appraisal cost, internal failure cost, external failure cost) in manufacturing systems.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2000.06a
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• pp.388-395
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• 2000

Axial fans are widely used in heavy machines due to their ability to produce high flow rate for cooling of engines. At the same time, the noise generated by these fans causes one of the most serious problems. This work is concerned with the low noise technique of discrete frequency noise. The prediction model, which allowed the calculation of acoustic pressure at the blade passing frequency and it's harmonics, has been developed by Farrasat. This theory is founded upon the acoustic radiation of unsteady forces acting on blade. To calculate the unsteady resultant force over the fan blade. Time-Marching Free-Wake Method are used. The ideas of low noise technique are obtained from Blade-Momentum Methods. In this paper, the discussion is confined to the performance and discrete noise of axial fan in heavy equipments.