• 한국임상약학회지
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• 제18권1호
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• pp.28-37
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• 2008

Objectives: Overactive bladder(OAB), defined as 'urgency, with or without urge incontinence, usually with frequency and nocturia', is a major burden for patients and impairs quality of life. The aim of this study is to evaluate the cost-effectiveness of antimuscarinic agents for the treatment of overactive bladder including quality of life in societal perspective. Methods: A decision-analysis model was developed to compare the cost-effectiveness of solifenacin and tolterodine IR over 12 weeks. We used data from the published literature to develop the framework for the model. Resource utilization and costs were calculated with public institutional data and supplemented this information with clinical expert opinion, where necessary. Results: The expected costs per patient for solifenacin were 48,762 KRW less expensive than tolterodine IR over 12 weeks. Also, all outcomes including quality of life for solifenacin were more effective than tolterodine IR over 12 weeks. In conclusion, solifenacin dominates tolterodine IR and appears to be cost-effective options for the management of overactive bladder.

• 국제학술발표논문집
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• The 5th International Conference on Construction Engineering and Project Management
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• pp.294-299
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• 2013

In many urban cities, super-tall buildings have been being constructed around New York and Chicago as the center since 1930 to improve the efficiency of land use and respond to new residential type. In terms of energy consumption, super-tall buildings are classified as a top energy consumption building. Also, as time passed, the degradation of energy performance occurs in super-tall buildings like general things so that these cannot show the initial performance planned in the design phase. Accordingly, building owners need to make a plan to apply energy saving measures to existing building during the operation phase. In order to select energy saving measures, calculus-based methods and enumerative schemes have been typically used. However, these methods are time-consuming and previous studies which used these methods have problems with not considering the initial construction cost. Consequently, this study proposes a model for selecting an optimal combination of energy saving measures which derives maximum energy saving within allowable cost using genetic algorithms. As a contribution of this research, it would be expected that a model is utilized as one of the decision-making tools during the planning stage for energy saving.

• 접착 및 계면
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• 제25권1호
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• pp.143-151
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• 2024

유기태양전지(Organic photovoltaics, OPV)는 기계적 유연성, 경량, 반투명성, 낮은 제조 비용 등 여러 가지 고유한 특성을 지니고 있어 차세대 신재생 에너지원으로 큰 잠재력을 보여 왔다. 최근 분자구조 및 소자 엔지니어링의 발전으로 19% 이상의 높은 효율을 달성했다. 그러나 이러한 높은 효율을 갖춘 광활성층 물질들은 복잡한 구조로 인해 합성 과정이 복잡하며 제조비용이 높아 상용화에 어려움이 있다. 이 문제를 해결 하기 위해 간단한 구조를 갖는 저비용 광활성층 물질들에 대한 연구가 활발히 이루어지고 있다. 본 논문에서는 이러한 낮은 비용의 광활성층 물질 및 이를 합성하기 위한 전략들에 대해 소개한다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제7권12호
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• pp.3096-3117
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• 2013

To execute the performance driven Grid applications, an effective and scalable workflow scheduling is seen as an essential. To optimize cost & makespan, in this paper, we propose a Scalable Cost-Time Trade-off (SCTT) model for scheduling workflow tasks. We have developed a heuristic algorithm known as Scalable Cost-Time Trade-off Scheduling (SCTTS) with a lower runtime complexity based on the proposed SCTT model. We have compared the performance of our proposed approach with other heuristic and meta-heuristic based scheduling strategies using simulations. The results show that the proposed approach improves performance and scalability with different workflow sizes, task parallelism and heterogeneous resources. This method, therefore, outperforms other methods.

• 약학회지
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• 제51권3호
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• pp.186-193
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• 2007

This study was performed to analyse the economic value of abciximab which is used in PCI to prevent high-risk patients with ischemic complications. The effectiveness of abciximab was extracted from published clinical trials by search-ing CCIS, and the direct medical costs relevant to using abciximab were estimated from the NHI claims database. The results in terms of cost per life-year gained (LYG) and cost per QALY gained showed that abciximab was cost-effective enough to deserve its cost. Social net benefit resulting from abciximab in PCI was estimated to be 60-70 billion Won per year.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2002년도 추계학술대회 논문집(I)
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• pp.684-689
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• 2002

This paper represents the life-cycle cost(LCC) of steel bridges which are located on the train-network. Corrosion problems are mainly considered in the steel members such as steel plate girder, box girder, truss and arch. Based on the current value, initial construction cost, maintenance cost and demolition cost are calculated and life-cycle costs are formulated for the several types of bridges. From the comparison on each LCC, an effective painting method is recommended for reducing the LCC of steel bridges. Even though the initial cost of Super Weather Resistance Heavy Duty Paintings (Resin Fluoride) is expensive, because of the long endurance, the LCC of steel bridges painted with Super Weather Resistance Heavy Duty Paintings (Resin Fluoride) is less than that painted with General Heavy Duty (Rubber Chloride).

• 한국철도학회:학술대회논문집
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• 한국철도학회 2002년도 추계학술대회 논문집(I)
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• pp.396-407
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• 2002

신규로 투입되는 전동차는 강화된 안전성과 승객 편의성 규격이 요구되며 이로 인해 차량 초기 구입 비용 증가가 불가피할 것으로 예상되나 효율적인 설계를 통한 운영비 절감 등 또한 예상된다. 따라서 차량 구입은 초기 구입 비용, 운영 비용을 고려하여 결정되어야 하며, 이러한 비용 추정의 한 방법으로써 차량 수명 주기 비용(Life Cycle)과 그 적용 가능성을 제시하고자 한다.

• 전기학회논문지
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• 제60권11호
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• pp.1993-1999
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• 2011

Today, the power utilities is setting on the slow load growth and the aging of power equipment, and then could spend the efforts on the stability of system performance. Asset management may be defined as the process of maximizing corporate profit by maximizing performance and minimizing cost over the entire life cycle of power equipment. Therefore, asset management is great way to fulfill the economic investment and the stability of system performance. This paper presents the application of effective asset managem ent from an economic perspective. A proposed method is considering the life cycle analysis using life cycle cost methodology for hydro-generator during the total life cycle. The life cycle cost methodology include a way to calculating maintenance and operating costs. The proposed method will be expected to play an important role in investment decision making considering economic evaluation.

• 대한산업공학회지
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• 제27권2호
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• pp.150-157
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• 2001

Since the transportation cost takes two thirds of the logistics cost of Korean firms, significant reduction of business logistics cost can hardly be achieved without effective reduction of the transportation cost. Although consolidated transportation has been regarded as the most promising strategy for reducing the transportation cost, it has not been successful in practice. In this paper, we propose a consolidated transportation model for firms located in industrial complexes, present a heuristic algorithm to operate the system, and analyze the expected cost reduction.

• 보건의료산업학회지
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• 제5권1호
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• pp.87-99
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• 2011

The aim of the research is to figure out how the perception and the attitude of hospital staff have effect on cost management behavior, to check the mediation effect in the relationship between cost attitude and cost management behavior, and to provide some basic data of efficient cost management means for hospital staff. The major results of research can be summed up as following. Subordinate factors of cost perception such as conviction, information, and thought were all revealed as meaningful effect ones on cost attitude, but they didn't have meaningful effect on cost management behavior. However, if we check the final results of direct effect, indirect effect, and total effect in its variants, we can understand that cost perception have indirect effect on cost management behavior via cost attitude. Cost attitude was revealed as the greatest variant having direct effect on cost management behavior. As a conclusion, it seems that the correct cost perception can make positive cost attitude, by which desirable cost management behavior can be induced. Therefore, as the correct cost perception can make positive attitude, it is necessary to construct effective system to provide useful cost information for staff at anytime and at any place continually on organization aspect. It is important to get correct cost perception for the positive attitude of staff. Nevertheless, if the positive attitude would not be formed, it is necessary to search for the ways for personal motivation, for the management behavior cannot emerge positively.