• 한국철도학회:학술대회논문집
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• 한국철도학회 2007년도 추계학술대회 논문집
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• pp.1694-1714
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• 2007

This study is to estimate economic benefits of Standardization R&D of Urban Rail System. Benefit was to be realized through standardization of main areas such as train vehicle, railway, power system, and signal system. To derive and calculate the quantitative benefit, the sources of economic impact was divided into three dimensions -operational cost savings, import substitution, and safety effects. Economic effect of the standardization was categorized based on a modified BSC model. Economic benefits from time and labor savings are converted into cost savings. Import substitution and investment multiplier effect have a positive impact in addition to cost savings. The estimation of the standardization R&D of Urban Rail System was conservatively estimated 370 billion Won. Cost effectiveness of standardized safety system was conservatively translated into economic benefit in this analysis. This study provides a practical guide to economic evaluation of the various railway R&D projects.

• Journal of Preventive Medicine and Public Health
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• 제39권2호
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• pp.149-158
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• 2006

Objectives : We wanted to evaluate the economic value of a pharmaceutical product, Kremezin, for treating patients with chronic renal failure (CRF) by estimating the amount of cost savings due to its effect for delaying the initiation of dialysis treatments. Methods : We defined a conventional treatment for CRF accompanied by Kremezin therapy as 'the treatment group' and only conventional treatment as 'the alternative group.' The types of costs included were direct medical and nonmedical costs and costs of productivity loss. The information on the effect of Kremezin was obtained from the results of earlier clinical studies. Cost information was derived from the administrative data for 20 hemodialysis and 20 peritoneal dialysis patients from one tertiary care hospital, and also from the administrative data of 10 hemodialysis patients from one free-standing dialysis center. Per-capita cost savings resulting from Kremezin therapy were separately estimated for the cases with delay for the onset of hemodialysis and the cases with immediate performance of peritoneal dialysis. By computing the weighted average for the cases of hemodialysis and peritoneal dialysis, the expected per-capita cost savings of a patient with CRF was obtained. Using a discount rate of 5%, future cost savings were converted to the present value. Results : The present value of cumulative cost savings per patient with CRF from the societal perspective would be $18,555,000{\sim}29,410,000$ Won or $72,104,000{\sim}112,523,000$ Won if Kremezin delays the initiation of dialysis by 1 or 4 years. Conclusions : The estimated amount of cost savings resulting from treating CRF patients with Kremezin confirms that its effect for delaying the onset of dialysis treatments has a considerable economic value.

• 한국문헌정보학회지
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• 제39권2호
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• pp.35-55
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• 2005

본 연구는 목록 아웃소싱의 타당성 분석을 시도하였으며, 아웃소싱으로 인해 발생하는 부가가치를 정보경제학에 기초한 직접편익, 가치연결의 효과로 분류하여 분석하는 경제성 분석모형을 적용하였다. 직접편익은 비용절감과 비용회피로 가치연결 효과는 목록 품질의 향상정도로 측정하였다. 분석결과, 목록 아웃소싱의 종합적인 타당성은 입증되지 않았으며, 이는 납품업체들의 전문성 결여로 품질제어를 하는데 사서의 시간이 많이 투입되어 실제적인 비용절감에 효과가 거의 없는 것이 가장 근 요인인 것으로 나타났다. 이렇게 현실적인 타당성이 미흡한 상태에서 목록 아웃소싱을 무리하게 이용할 경우 운영비용의 절감과 봉사기능의 제고라는 기본 취지를 달성하는 것이 불가능할 것이다.

• 한국철도학회논문집
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• 제9권4호
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• pp.473-481
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• 2006

This study attempts to estimate economic benefits in terms of cost sayings and qualitative effects resulting ken implementation of new vehicle maintenance information system. It is widely expected that the effect of new vehicle maintenance information system will be significant in cost savings by information sharing and electronic documentation. To evaluate the economic feasibility of new system implementation, the study conducted seven subsystems case studies on the vehicle maintenance information system of Seoul Metro. Economic benefits are estimated by measuring the time savings, in turn, are calculated into cost savings by multiplying the average wages per hour of employee. The result of case study showed that over the 20 billion Won will be saved owing to new vehicle information system implementation. In conclusion, this study will contribute to the field of practices for the most, in evaluation of the economic benefits resulting from new information system implementation in the railway organization.

• 대한간호학회지
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• 제38권3호
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• pp.363-371
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• 2008

Purpose: This analysis was conducted to evaluate the cost-effectiveness of gemcitabine-cisplatin chemotherapy for non small-cell lung cancer patients in an outpatient setting compared with the traditional inpatient setting. Methods: A cost-effective analysis was conducted from a societal perspective. The effects of treatment, which was measured as an adverse event rate, were abstracted from a published literature search and empirical data from one university hospital. The costs included both direct and indirect costs. Direct costs included hospitalizations, outpatient visits, and lab tests. Pharmaceutical costs were excluded in analysis because they were same for both options. Indirect costs included productivity loss of patients as well as care-givers. In order to determine the robustness of the results, sensitivity analysis on treatment protocol was conducted. Results: Literature search showed no difference in adverse effect rates between inpatient treatment protocol and outpatient treatment protocol. Therefore, this analysis is a cost-minimization analysis. Cost-savings in the outpatient setting was 555,936 won for one treatment cycle. Our sensitivity analysis indicated that the outpatient chemotherapy still showed cost-savings, regardless of changes in treatment protocol. Conclusion: The outpatient gemcitabine-cisplatin chemotherapy for non small-cell lung cancer resulted in cost savings compared to inpatient chemotherapy. More importantly, outpatient chemotherapy could improve the utilization of health service resources in terms of available beds.

• 한국조경학회지
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• 제26권3호
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• pp.104-117
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• 1998

Rising concern about climate change has evoked interest in the potential for urban vegetation to help reduce the level of atmospheric CO\sub 2\, a major heat-trapping gas. This study quantified the functio of home energy savings and carbon emission reduction by shading, evapotranspiration and windspeed reduction of urban vegetatioin in Chuncheon. Tree and shrub cover averaged approximately 13% in residential land. The effects of shading, evapotranspiration and windspeed reduction annually saved heating energy by 2.2% and cooling energy by 8.8%. The heating and cooling energy savings reduced carbon emissions by 3.0% annually. These avoided emissions equaled the amount of carbon emitted annually from fossil fuel consumption by a population of about 1,230. Carbon emission reduction per residential building was 55kg for detached buildings and 872 kg for multifamily buildings. Urban vegetation annually decreased heating and cooling energy cost by ￦1.1 billions, which were equivalent to annual savings of ￦10,000 savings and carbon emission reduction due to tree plantings in the wrong locations, while windspeed reduction had a great effect. Plantings fo large trees close to the west and east wall of buildings, full tree plantings on the north, and avoidance of shade-tree plantings or selection of solar-friendlytrees on the south were recommended to improve the function of building energy savings and carbon emission reduction by urban vegetation.

• 디지털융복합연구
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• 제14권10호
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• pp.311-317
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• 2016

스마트 커머스 시장에서 소비자는 개인 성향에 최적화된 개인화된 서비스와 소비자 취향을 고려한 맞춤형 쇼핑 경험을 원하고 있다. 즉, 소비자는 개인화된 맞춤형 서비스를 요구하고 있다. 이러한 요구에 따라 기업들은 메시징서비스를 소비자에게 제공하고 있지만, 각 개인에 맞춤형 서비스를 포함하지 못하고 있다. 따라서 본 연구는 메시징서비스에 개인화 서비스기술을 결합하여 기업용 메시징서비스의 통합 모형 및 시스템 구축방안을 제시하고, 이를 통해 마케팅 효과를 극대화하고 비용절감 효과를 분석한다. 제안된 통합 모형 작동방식은 고객 요구사항에 따라 개인화된 정보를 통해 개인화모형 적용하여 효과적인 개인화를 통한 메시징 전송 방안을 제시하고 있다. 본 연구의 개인화 통합모형은 검색서비스와 결합되었을 경우 매우 높은 효과가 있을 것으로 판단된다.

• Journal of Information Technology Applications and Management
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• 제31권2호
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• pp.15-34
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• 2024

This study aims to analyze the effect of absorptive capacity on technology collaboration performance and the moderating effect of innovation intermediaries. We set absorptive capacity (potential, realized) as independent variables and technology collaboration performance (relative technology level, development period, cost savings, new product development, collaboration satisfaction) as dependent variables, with innovation intermediaries as a moderating variable. We conducted a survey of 145 ICT companies that experienced technology collaboration and analyzed the data using 101 valid responses. The results show that potential absorptive capacity has a significant effect on new product development and collaboration satisfaction, while realized absorptive capacity has a significant effect on relative technology level, cost savings, and new product development. Furthermore, innovation intermediaries have a moderating effect between realized absorptive capacity and new product development. The contribution of this study to academia and industry is that it highlights absorptive capacity as a key factor influencing technology collaboration performance. The limitations of this study include the lack of accurate measurement of absorptive capacity and innovation intermediaries, as well as a lack of control over external factors. These limitations should be addressed through more in-depth research by systematically defining and measuring them in future follow-up studies.

• 성인간호학회지
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• 제22권3호
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• pp.229-238
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• 2010

Purpose: The purpose of this study was to examine the effect of maximal sterile barrier precaution on the central venous catheter-related infection and subsequent cost savings. Methods: Study subjects were 462 hospitalized patients with central venous, catheter of more than 48 hours duration. Data collection period was from April 2008 to February 2009 at a tertiary university hospital in Seoul. Subjects were randomly assigned to either the treatment or the usual care group. Patients in the treatment group (n=209) were treated by staff using maximal sterile barrier precautions and the comparison group(n=253) received traditional care. Results: Central venous catheter-days was2,821 in treatment group and 3,515 in comparison group. The incidence density of central venous catheter-related infection was 2.1 times higher in the comparison group (8.2 per 1,000 catheter-days) compared with the treatment group (3.9 per 1,000 catheter-days). The incidence density of central venous catheter-related bloodstream infection was 4.54 times higher than in the comparison group (3.2 per 1,000 catheter-days) compared with the treatment group (0.7 per 1,000 catheter-days). The attributable cost of central venous catheter-related infection in the treatment group was 10,174,197 won and that of the comparison group was 22,224,554 won. Attributable cost by area was also significantly lower compared with that of the comparisons. Conclusion: The maximal sterile barrier precaution during central venous catheter insertion was an effective intervention to reduce central venous catheter-related infection rate and provides a significant cost savings.

• 한국ITS학회 논문지
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• 제14권1호
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• pp.94-102
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• 2015

고속도로 하이패스 이용률은 59.4%(2013년말 기준)로서 지속적으로 증가하고 있는 추세이다. 본 연구에서는 고속도로 영업소를 이용하는 승용차의 연료소모량을 측정하기 위해서 4개 차종을 대상으로 차대 동력계를 이용한 탄소균형법을 적용하였고, 일반 영업소와 하이패스 영업소의 주행 모드 18개를 설정하여 실험하였다. 그 결과 폐쇄식 구간의 경우 차종에 따라 21.0~56.4ml/veh, 개방식 구간의 경우 10.5~28.1ml/veh의 연료소모 절감효과가 있는 것으로 분석되었다. 또한, 하이패스 이용률에 따른 연간 연료비용 절감효과는 이용률 70%일 경우 282~573억원, 80%일 경우 322~655억원, 90%일 경우 362~737억원, 100%일 경우 403~819억원으로 산정되었다.