• The Transactions of the Korean Institute of Electrical Engineers P
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• v.64 no.4
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• pp.273-276
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• 2015

In this paper, ESS capacity installed in industrial customer is calculated using economic analysis. To do this, electric charge for industrial customer is analyzed and power management system(PMS) of ESS is selected. Reduction of kW cost and kWh cost are set to 'benefit' according to operation of ESS. Also, installation cost and maintenance cost of ESS are set to 'cost'. Proper ESS capacity is determined as a result of benefit-to-cost(B/C) analysis according to the variation of ESS installation cost. In case study, B/C is analyzed for the specific industrial customer and minimum capacity of ESS to make a profit are proposed for the customer.

• Journal of the Korean Dietetic Association
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• v.6 no.1
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• pp.33-43
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• 2000

Environmental pressures from such sources an economic condition, the government and inter-institutional competition create managerial challenges. Economic pressures may be forcing dietetic dept, in hospital to utilize cost∙benefit analysis to assist them in their problem solving. Cost∙benefit analysis have been widely used in business, industry and many other fields with only limited application to foodservice. Due to the lack or this information the purposes of this study were to identify use of cost∙benefit analysis in hospital foodservice system to evaluate the economic efficiency of alternatives, and to make recommendation for operation system change. Using the cost∙benefit method, cash flows are separated into cost and benefits. For an alternative to be selected, indicators, such as NPV, benefit-cost ratio (B/C ratio) with 5% discount rate per annum. The sensitivity analysis was also conducted with difference rate 3%, 7% respectively and reduced employee payroll change. The result of this study can be summarized as follows : 1. The total cost of investment for operation system change was 390,570 thousand won and the total benefit through operation system change was 865,808 thousand won. 2. Net present value(NPV) for 5 years was 475,239 thousand won and benefit-cost ratio was 2.22. 3. In sensitivity analysis with different discount rate 3%, 7%, benefit-cost ratio was 2.25, 2.18 respectively, with total reduced employee payroll change, benefit-cost ratio was 2.86. In conclusion, total benefits were exceeded total costs. Therefore, the project of operation system change in hospital foodservice was found to be economically efficient.

• Korea Journal of Hospital Management
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• v.14 no.3
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• pp.23-48
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• 2009

The purpose of this study was to provide criteria which help executives to make decisions through the analysis of profitability of ultrasonography conducted in each medical department. In order to achieve such purpose, the study conducted break-even analyses on three medical departments of a university hospital in which has used ultrasonography was largely conducted in diagnosing diseases and performing surgeries. The research was carried out from January to June 2008. The data necessary for calculating cost, were collected using by computerized data. The results of the study were summarized as follows. 1. The Cost structure of each medical department: The Cost of ultrasonography was divided into direct cost and indirect cost through the categorization by cost object. Labor cost accounted for the largest portion of the direct cost with 69.3% in the department of obstetrics and gynecology, 67.4% in the department of radiology and 58.2% in the cardiac ultrasonography center, which followed by the depreciation cost of ultrasonography equipment. The calculation of the average material cost of each ultrasonographic test by medical test found that the cardiac ultrasonography center took first place with 2,355 won, followed by the department of obstetrics and gynecology with 266 won and the department of radiology with 233 won. As for the power cost of ultrasonography equipment, the department of radiology took fist place with 442,000 won. The power cost, however, did not affect much the cost price, because it accounted for only a small portion of the cost. As for indirect cost, the cardiac ultrasonography center ranked first with 7,156,000 won. Building depreciation cost accounted for the largest portion of the indirect cost. 2. Break-even analysis: Under the supposition that cost price can be divided into fixed cost and variable cost, a break-even analysis was conducted using the cost price confirmed through the cost structure of each medical department. As for the average customary charge of ultrasonography test conducted in each medical department, the department of obstetrics and gynecology charged 24,627 won, the department of radiology 53,179 won and the cardiac ultrasonography center 65,174 won. According to these results, the charges of ultrasonography test imposed by the department of radiology and the cardiac ultrasonography center wre enough to surpass break-even levels, but the charge imposed by the department of obstetrics and gynecology was not enough to offset the cost price. In conclusion, labor cost accounted for the largest proportion of cost price of ultrasonography test conducted in diagnosing diseases and performing surgeries in medical departments, followed by the fixed cost of ultrasonographic equipment depreciation cost. In medical department where the current charge of ultrasonography test turned out not to offset cost price through the break-even analysis of ultrasonographic equipment, ways to reduce fixed cost which accounts for the largest proportion of the cost price should be sought. Even medical departments whose current charge of ultrasonography test is enough to surpass break-even level are required to work for efficient management and cost reduction to continuously generate profits.

• Journal of Korean Academy of Nursing Administration
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• v.13 no.4
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• pp.407-420
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• 2007

Purpose: The objective of this literature review study was to identify research's trends and methodological issues of cost analysis on nursing services. Methods: Researches which analyzed nursing services cost, were selected from journal articles and master or doctoral dissertation studies. The total numbers of the collected studies were 23. Results: The number of studies on nursing services cost has been increased rapidly since middle-1990. The 5 methodological frameworks to classify the cost analysis researches was found. 4 researches were using the traditional costing method. 6 researches were using the clinical patient classification systems. 4 researches were using the Korean Diagnosis Related Group (KDRG). 5 researches were using the Resource Based Relative Value Scale (RBRVS). 4 researches were using the Activity Based Costing (ABC). Conclusion: These results will be used to provide the basic data for developing a more refined cost analysis method on nursing services. For further studies, we will suggest that the consent criteria of cost items need to measure nursing services be developed and the conducting cost analysis on nursing services be networked a hospital's cost management system.

• Journal of Power System Engineering
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• v.18 no.3
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• pp.112-117
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• 2014

The purpose of this study is to suggest the benefit-cost analysis for photovoltaic system in greenhome. Perspectives of benefit-cost analysis for photovoltaic system in greenhome is participant, non-participant, administrator and nation. This study identifies the cost and benefit components and benefit-cost calculation procedures from four major perspectives : participant, non-participant, administrator and nation. The results of benefit-cost analysis from each perspective can be expressed in a variety of ways, but in all cases it is necessary to calculate the net present value of photovoltaic system impacts over the lifecycle of those impacts.

• Asia-Pacific Journal of Business
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• v.9 no.4
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• pp.67-84
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• 2018

This study is about comparing coal thermal plant to LNG combined power plant in respect of environmental and economic cost analysis. In addition sensitive analysis of power cost and discount rate is conducted to compare the result of change in endogenous and exogenous variable. For environmental assessment, when they generate 10,669GWh yearly, coal thermal power plant emits sulfur oxides 959ton, nitrogen oxide 690ton, particulate matter 168ton and LNG combined power plant emits only nitrogen oxide 886ton respectively every year. Regarding economic cost analysis on both power plants during persisting period 30 years, coal thermal power plant is more cost effective 4,751 billion won than LNG combined taking in account the initial, operational, energy and environmental cost at 10,669GWh yearly in spite of only LNG combined power plant's energy cost higher than coal thermal. In case of sensitive analysis of power cost and discount rate, as 1% rise or drop in power cost, the total cost of coal thermal power plant increases or decreases 81 billion won and LNG combined 157 billion won up or down respectively. When discount rate 1% higher, the cost of coal thermal and LNG combined power plant decrease 498 billion won and 539 billion won for each. When discount rate 1% lower, the cost of both power plant increase 539 billion won and 837 billion won. With comparing each result of change in power cost and discount rate, as discount rate is weigher than power cost, which means most influential variable of power plan is discount rate one of exogenous variables not endogenous.

• Journal of the Architectural Institute of Korea Structure & Construction
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• v.36 no.3
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• pp.147-157
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• 2020

With the increasing obligation to reduce greenhouse gas emissions to the building sector, the government has been gradually expanding its obligation to zero-energy buildings since 2020. Since the ZEB certification took effect in 2017, 48 preliminary and main certifications have been completed as of March 2019, and most of them are public buildings or even certified, but have earned Grade 5 of ZEB. This means that compared with the number of annual building permits registered in Korea, the figure is insignificant, and that it receives little if not mandatory. Therefore, this study investigated empirical cases of ZEB additional construction cost and conducted cost benefit analysis according to changes in ZEB additional construction cost based on a preliminary feasibility analysis project recently conducted by the KDI. In addition, considering the public buildings, the social costs were considered, and the cost-benefit analysis method was the same as the KDI's preliminary feasibility analysis method. The analysis shows that if the ratio of ZEB additional construction cost is more than 5 percent, it is analyzed that there is no economic feasibility, and considering that the ratio of additional construction cost in the cases of ZEB in Korea is 17 percent to 38 percent, it will not be easy to obtain ZEB certification in terms of cost. Finally, to narrow these differences in cost and economic aspects, the overseas low energy and ZEB incentive examples proposed measures such as the concept of subsidy payment in Illinois and the compensation of social costs to private ZEB.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2019.05a
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• pp.246-247
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• 2019

This study was conducted to provide useful information to enable planned repair and cost planning during the operation and maintenance phase of aged multi-family housing. For this purpose, The concept of probabilistic maintenance cost analysis considering the risk factors of the aged multi-family housing is presented in the following six steps. 1. Risk factor investigation and analysis 2. Classification and deriving of maintenance cost 3. Investigation and deriving cost maintenance cost of old apartment house 4. Analysis of expert questionnaire 5. Analysis of Monte -Carlo simulation 6. Probabilistic maintenance cost Deriving the result. This study has limitations that need to be verified by applying actual data.

• Journal of the Korean Society of Safety
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• v.17 no.2
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• pp.63-68
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• 2002

Life Cycle Cost analysis technique is introduced to evaluate cost-effectiveness of two paint systems of steel bridges. The systems are a conventional paint system and a galvanized paint system. The all costs during safe lift such as initial cost repainting costs, disposal costs are considered for the lift cycle cost analysis. The NIST model is used and BridgeLCC 1.0 developed by the NST is utilized as the lift cycle cost analysis tool. It is concluded that, in spite of expensive initial cost, the durable paint system may be cost-effective compared with conventional paint system.

• Proceedings of the Korean Society of Agricultural Engineers Conference
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• 1999.10c
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• pp.359-364
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• 1999

Providing the reasonable construction cost at the initial stage of the rural development project, is a kety factor of the each step of project , such as propriety analysis , cost planning , design, and planning the progress of work. The explainable construction cost can be estimated at the early stage using the actual cost data by statistical analysis. In this study, the influence factors are extracted by factor analysis with the actual cost data of rural development project, object cost model is developed by multiple regression analysis, and verify the developed cost model by Monte-Carlo simulation .