• Journal of Preventive Medicine and Public Health
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• 제41권2호
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• pp.74-79
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• 2008

Since the positive listing system for prescription drug reimbursement has been introduced in Korea, the number of pharmacoeconomic evaluation studies has increased. However it is not clear if the quality of pharmacoeconomic evaluation study has improved. Due to the lack of randomized clinical studies in Korean health care setting, Korean economic evaluation studies have typically integrated the local cost data and foreign clinical data. Therefore methodological issues can be raised in regard to data coherence and consistency. But the quality of data was not questiened and the potential bias has not been investigated yet. Even though changes in policy have encouraged the undertaking of pharmacoeconomic evaluations, there is few public-side funding for validation study of cost-effectiveness models and data. Several companies perform economic evaluation studies to be submitted on behalf of their own products, but do not want the study results to be disclosed to the academic community or public. To improve the present conduct of pharmacoeconomic evaluations in Korea, various funding sources need to be developed, and, like other multidisciplinary areas, the experts in different fields of study should collaborate to ensure the validity and credibility of pharmacoeconomic evaluations.

• 전력전자학회논문지
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• 제20권2호
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• pp.122-129
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• 2015

In this study, we propose a low voltage stress and cost-effective light emitting diode (LED) driver capable of multi-channel current balancing. Conventional LED drivers require as many boost converters as the number of LED channels, whereas the proposed LED driver requires only one buck converter and several balancing capacitors instead of several expensive boost converters. Additionally, while the components of the boost converter have high voltage stress and depend on the LED driving voltage, components of the proposed driver have about one-half of the voltage stress across all components. The proposed driver exhibits high reliability and cost effectiveness because it only uses few DC blocking capacitors with no additional active devices to balance the current of multi-channel LEDs. The proposed driver exhibits high reliability and cost effectiveness. The validity of the proposed driver is confirmed through a theoretical analysis. An explanation of the design considerations and experimental results were obtained using a prototype applicable to a 46" LED-TV.

• 한국안전학회지
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• 제27권5호
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• pp.95-98
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• 2012

There are many high-rise apartment building construction in Korea. There was an accident to pass through worker head by rebar dropped from height place. Therefore, low cost-high effectiveness method to prevent this type of accident should be revised and applied into the construction site. This study is to find out which method could be effectively applied to a site with low cost. Practical field test at 4th floor, 10th floor of apartment building site using re-bar diameter D10, D13, D16, D19, D22 with a length of 1 m, 1.5 m, 2 m, 2.5 m, 3 m which are common by used in a site. The test has also been done with a cover of styrofoam thickness 4.5 cm and thickness 9cm on field drop preventing net. One sheet of styrofoam thickness 45 mm has approximately two times stronger than only prevention net, It is found. Also, Two sheets have approximately two times stronger than one sheet of it.

• 한국산학기술학회논문지
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• 제9권5호
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• pp.1234-1241
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• 2008

소프트웨어의 개발에서 테스트 비용을 적게 하는 유효한 기법중의 하나로 기술 리뷰의 실행이 있다. 본 연구에서는 기술 리뷰에 의한 테스트 비용의 감소율에 주목하여 새로운 리뷰 평가 척도 My를 제안한다. 그리고, 실제의 소프트웨어 개발 과정에서 수집한 데이터를 사용하여 종래의 척도와 비교, 평가를 하였다. 그 결과 종래의 평가척도에 대한 My의 우위성과 유효성이 실험적으로 확인되었다. 또한, 리뷰 공정에서 수집한 데이터와 테스트 공정에서 수집한 데이터와 관계를 조사해서, 리뷰 공정에서 가능한 데이터만을 이용하여 My의 값을 추정하는 방법에 대해서도 기술하였다.

• 노동경제논집
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• 제31권1호
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• pp.59-103
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• 2008

본 논문은 실업자 직업훈련사업의 효과를 추정하였다. 주요 결과로서, 구직기간 및 구직 성공률 면에서 전직실업자훈련생이 훈련을 받지 않은 실업자들에 비하여 양호한 결과를 보이고 있으나 취업후 임금수준에서는 유의한 차이를 발견하지 못하였다. 또한 비용 편익분석 결과, 실업훈련을 받지 않은 실직자 그룹에 비해 전직실업자훈련생들의 성과가 높게 나타나고 있다고 볼 수 있으나, 민간우선선정직종 훈련생에 비해 대한상의훈련생의 구직 성과가 높음에도 불구하고 무엇보다 1인당 훈련비용이 높기 때문에 전반적인 훈련성과가 보다 우월하다고 단정하기 어려웠다.

• Journal of Communications and Networks
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• 제14권3호
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• pp.319-335
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• 2012

In this study, we design an applicable model enabling internet protocol television (IPTV) service providers to use a virtual network (VN) for IPTV service delivery. The model addresses the guaranteed service delivery, cost effectiveness, flexible control, and scalable network infrastructure limitations of backbone or IP overlay-based content networks. There are two major challenges involved in this research: i) The design of an efficient, cost effective, and reliable virtual network topology (VNT) for IPTV service delivery and the handling of a VN allocation failure by infrastructure providers (InPs) and ii) the proper approach to reduce the cost of VNT recontruction and reallocation caused by VNT allocation failure. Therefore, in this study, we design a more reliable virtual network topology for solving a single virtual node, virtual link, or video server failure. We develop a novel optimization objective and an efficient VN construction algorithm for building the proposed topology. In addition, we address the VN allocation failure problem by proposing VNT decomposition and reconstruction algorithms. Various simulations are conducted to verify the effectiveness of the proposed VNT, as well as that of the associated construction, decomposition, and reconstruction algorithms in terms of reliability and efficiency. The simulation results are compared with the findings of existing works, and an improvement in performance is observed.

• 한국자원리싸이클링학회:학술대회논문집
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• 한국자원리싸이클링학회 2003년도 추계정기총회 및 국제심포지엄
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• pp.165-169
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• 2003

Current volume reduction methods for wasted expandable polystyrene (EPS) foam are summarized and compared each other. Wasted EPS foam has not been recycled effectively because of its large volume to weight ratio. This has prevented from its proper recycling because of high cost of transportation to recycling plant. Successful recycling of wasted EPS foam results directly from successful, i.e. economically and environmentally, volume reduction of wasted EPS foam. This paper deals with various methods for volume reduction methods of wasted EPS foam. Five typical methods of volume reduction are introduced and they are compared each other in terms of expected PS properties after volume reduction, cost effectiveness of each process, possible effects on environment caused by the volume reduction process, and possible recycled products. The methods include thermal, solvent, far infrared and mechanical compaction. Comparison in this paper is made mostly in qualitative manner. The focus in this study is concentrated on summarizing and comparing existing methods of volume reduction for wasted EPS foam.

• 수산경영론집
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• 제42권2호
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• pp.97-112
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• 2011

The coastal and offshore fishery to manage from a fishery permit system in our country at present seems to be a sign of lots problem, which are illegal fishing, a permit rent, non fishing vessel the purpose of vessel reduction, fishery compensation, tax exemption oil, the excessive occurrence of administrative cost due to differences during a period of a fishery permit. All the readjustment system for the permit has suggested an effective solution for a fishery permit management, the maintenance of a fishery order(the prevention of illegal fishery), the prevention of unused fishery, the entrance of new vessel in coastal fishery and it's system has prevent this problems in ahead. This paper has estimated an prevention convenience for an illegal spill of the tax exemption oil, actual effects of vessel reduction, the conservation of fishery resource for the future value and carried out an economic analysis to estimate compliance cost for the system introduction. Also, this study have analyzed throughly the coastal fishery situation and catched lots of issues on the management for the permit system. Especially, the problems improving the readjustment introduction for the permit have estimated the social and economic effects quantitatively and qualitatively with a calculated technique to classify various scenarios. This paper has judged correctly the term of validity for the permit to shorten as a result of the estimation and it will be to take the net convenience cost 1,655thousand million won. The results of this study have expect to provide a basic data to introduce the readjustment system for the permit.

• 한방안이비인후피부과학회지
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• 제30권1호
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• pp.17-28
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• 2017

Objectives : The aim of this study is reviewing the literature to extracting the key parameter and finding the calibration parameter for the clinical study with economical assessment protocol on atopic dermatitis. Methods : Literature search is performed using PUBMED for literature published from Janurary 2000 to December 2016. We included randomized controlled trials(RCTs) with economic assessment in which human participants. Results : Among the articles published from January 2000 to December 2016, The 1464 articles were found. After reviewing the title, abstract and full text, the five articles were selected. Selected articles are classified 3 CEA(cost effective analysis)study, 1 CMA(cost minimizing analysis)study and 1 cost analysis study. Conclusions : We found highly reliable key parameters and calibration parameters, which might be necessary factors for developing research protocol of economic evaluation alongside clinical trial about atopic dermatitis patients.

• 대한핵의학회지
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• 제34권3호
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• pp.207-221
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• 2000

목적: 우리 나라에서 관동맥질 환자에게 시행되는 치료방법의 빈도와 현행수가와 개정 발표될 수가를 바탕으로 검사 전 유병률에 따라 비용효과 분석을 하였다. 대상 및 방법: 심근관류 SPECT를 한 후 관동맥조영술을 하는 경우, 운동부하심전도 후에 관동맥조영술을 한 경우, 바로 관동맥조영술을 한 경우, 그리고 운동부하심전도 후에 심근 SPECT 후에 관동맥조영술을 한 각각의 경우에 따라 비용을 계산하고 삶의 질을 고려한 여명(Quality Adjusted Life Year: QALY)가 각 치료하거나 치료하지 않았을 때 획득되는 여명의 차이(${\Delta}QALY$)를 산출하여 비용/${\Delta}QALY$가 검사 전 유병률에 따라 달라지는 양상을 제시하였다. 결과: 검사 전 유병률이 0.6이상일 때는 관동맥조영술을 바로 실시하는 것이 가장 비용대비효과가 높았다. 검사 전 유병률이 $0.2{\sim}0.6$이었을 때는 운동부하심전도 후에 심근 SPECT 후에 관동맥조영술을 하는 것이 비용대비 효과가 높았다. 심근 SPECT 후에 관동맥조영술을 하는 것이 차선책이었다. 운동부하심전도의 개정수가와 개정희망수가를 근거로 산출하였을 때에도 비용효과의 순서는 비슷하였다. 운동부하심전도 후 바로 관동맥조영술을 시행하는 것은 언제나 비용대비효과가 가장 낮았다. 결론: 심근관류 SPECT는 우리나라의 현행수가체계에서나 변동된 수가체계에서나 검사 전 유병률에 상관없이 비용효과면에서 우수하고 꼭 필요한 검사로 나타났다.