• 한국경영과학회지
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• 제29권1호
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• pp.71-85
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• 2004

Many online content providers who use the Internet to distribute contents, such as news, music, games, books, and other types of information, have been experiencing an extremely competitive business environment. To survive in this environment, they have started charging a fee for the contents that they provide. However, there have been very few success stories in commercializing online contents. One of the biggest hurdles may be customers' psychological resistance against paying a fee for the contents that have been free of charge previously. Without examining customers' perceived prices for online contents, many online content providers have tended to decide their prices by themselves. Online games are not exceptional cases. Although many online game-related research works have focused on psychological and technical aspects, very few works have examined online garners' preference carefully. This study alms at exploring online garners' preference by measuring their WTP (willingness to pay) for online games.

• 가정과삶의질연구
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• 제19권1호
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• pp.77-93
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• 2001

This paper examines consumer problems and issues of credit card use. The cases of credit card problems were from a civil consumer organization called Green Consumers Network in Korea. This paper focused on over five concerns, including credit card issuing, lost or stolen card settlements, vendor fee charging to customer, withholding payment in case of unsatisfactory purchases, and abusive debt collecting practices. Some solutions for the consumer problems were suggested.

• 대한족부족관절학회지
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• 제10권2호
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• pp.238-241
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• 2006

Purpose: The purpose of this study was to figure out the appropriate and systemic insurance charge for the hallux valgus operations. Materials and Methods: 5 Hospitals for hallux valgus operations were analyzed how they have been charging the national health insurance corporation for their operation fees and how to use the estimated guide and authoritive interpretation through the guide book of health insurance medical treatment grant expense and the guide book of Health insurance medical treatment. Results: There are nothing for guiding principle of hallux valgus operations in both books but a guide of Mcbride operation which is approved 'JA-93-KA and JA-31' for operation fee. So majority of hospitals have charged operation fee depending on their own interpretations they like. According to the guide books, there was a authoritive interpretation that simultaneous operation of osteotomy and tendon transfer for cerebral palsy and flat foot can be eatimated as 'osteotomy+JA-93-NA'. Conclusion: Distal soft tissue procedure should be approved as 'JA-93-NAx100%+JA-31x50%' according to the the estimated guide and authoritive interpretation if transected adductor hllucis is transfered to first metatarsal head. So distal chevron osteotomy could be 'JA-30-1-RAx100%+JA-31x50%', proximal metatarsal osteotomy could be 'JA- 93-NAx100%+JA-31-50%+JA-30-1-RAx50%', first metatarsocuneiform joint arthrodesis could be 'JA-93-NAx100%+ JA-31x50%+JA-73-RAx50%'.

• 디자인학연구
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• 제20권3호
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• pp.247-256
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• 2007

본 연구는 인간이 일상생활을 영위하는데 중요한 역할을 하는 눈이 노화되어 감으로서 노인의 시각 노화과정에서 보이는 시지각과 관련된 정보습득 및 해석상의 색지각을 통한 특징을 반영하여 노인의 주 생활환경인 유료 노인주거 시설의 실내 공용공간의 설계지침을 제시하는 것을 목적으로 한다. 일반시각과 70세와 80세 후반까지를 모의 수정체를 이용하여 각 세대별 시지각을 통한 색채의 오류판단을 파악하였다. 노화에 따른 노인의 황변화 및 색지각 특성을 바탕으로 실내 공용공간의 색채 설계 계획을 위한 기초자료로 사용하고자 한다. 본 연구의 결과로 인지 배색으로 유사조화 보다 대비조화를, 한색보다 난색계열을 사용함를 파악하였으며, 노인의 황변화에 따른 색지각 특성의 기초자료로서 활용될 수 있다.

• 방사성폐기물학회지
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• 제12권2호
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• pp.89-96
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• 2014

원자력발전소 및 산업계에서 발생하는 중 저준위방사성폐기물을 처분하기 위한 처분장이 2014년경 준공될 것으로 예상된다. 방사성폐기물 처분을 위해서는 물리적인 처분시설의 확보도 중요할 뿐만 아니라 발생자와 처분사업자 등 각종 이해관계자들이 모두 수긍할 수 있는 비용부과체계 마련도 중요하다. 우리나라의 처분비용은 해외의 다른 국가에 비하여 높은 편에 속하며 이는 폐기물 발생자와 처분사업자에게 많은 부담을 주고 있다. 우리나라의 처분비용이 높은 이유는 처분장 확보를 위한 사회적 비용 또는 건설비가 다른 국가에 비하여 상대적으로 높은 이유도 있겠으나, 처분장 건설을 위해 조달한 비용에서 발생한 금융비용이 보다 큰 요인으로 작용하고 있다. 본 연구에서는 처분사업의 지속가능한 사업체계 마련을 위해 비용 구조를 분석함으로서 처분비용 중 금융비용을 낮추기 위한 방안을 모색하고자 한다.

• 한국전자통신학회논문지
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• 제5권5호
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• pp.487-492
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• 2010

본 연구에서는 분뇨수집운반차량의 분뇨수거량을 정확하게 계측하고, 계측된 결과를 이용하여 청소요금을 산출할 수 있는 시스템을 개발하였다. 탱크내부의 높이를 계측할 수 있는 수위센서 센서회로 그리고 분뇨수거 작업자가 편리하게 사용할 수 있도록 휴대형 중앙처리연산장치를 개발하였다. 청소요금을 수거현장에서 징수할 수 있도록 영수증 출력기능도 내장되었다. 또한 경사진 현장에서 작업을 진행하여도 각도센서를 이용하여 탱크 내부에 분뇨가 수거되는 량을 정확하게 측정할 수 있도록 하였다. 본 연구결과를 통하여 분뇨수거 시 발생되는 민원을 감소시킬 수 있으며, 특화된 시스템의 수출로 외화획득이 기대된다.

• 동력기계공학회지
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• 제10권1호
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• pp.83-89
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• 2006

Recently, the seriousness of high blood pressure was appeared as the most frequent disease of a the whole sickness in the world. However, the treatment of this disease is uncertain and produces an adverse reaction of a medicine therapy. Also, the patients are burdened with a fee for medical treatment. Therefore, in this paper, we studied effectively and financially to execute the treatment of high blood pressure using the Chinese medicine theorem that is recently arousing the great interest of the people. The main theories in this paper are blood vessel theory and acupuncture, respectively. Especially, the composed circuit systems are classified the blood pressure depressor part and the meridian points discrimination part, respectively. The blood pressure depressor part is composed generally of low-frequency generation circuit, charging-discharging circuit, and micro-computer circuit. Finally, this research have the advantage of discrimination parts such as regular voltage generating circuit, stimulus circuit, amplifying circuit, and alarm circuit.

• Asia pacific journal of information systems
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• 제17권4호
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• pp.97-112
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• 2007

Most traditional newspaper publishers provide online editions to counter the competition of online news providers. However, the relationship between the online and print editions of the same newspaper has not been clearly defined. Some see the online newspaper as a substitute, while others consider it a complement. A 2002 NAA online newspaper consumer survey indicated that one-third of its respondents said they were now using the print newspaper less. Others have argued that the online edition will not wipe out print consumption, and may even complement it. While the print edition offers particular advantages such as portability, less eye strain, and the tactile experience of a printed page, the online edition also offers specific advantages such as access to breaking news, continually updated information, access to old archives, etc. All these factors would tend to lower the degree of interchangeability between the products. However, recent empirical studies show that the online edition is a substitute for rather than a complement of the print edition. Still, to some print readers, the online edition provides additional value. In this paper, by capturing the two different aspects of online editions the substitute aspect and the additional value added aspect as well as other available online alternatives, we develop an analytical model to derive the optimal production and distribution strategies of both online and print editions. Confronting the "free versus fee" issue, we show that it is optimal to provide an online version of the print newspaper for free to non-print subscribers. However, the amount of free news content that the publishers need to put on the Web depends on the available alternatives on the online market. The "fee" and "free" options both have merits and demerits as well. If the publisher charges for the online version of the print newspaper, she can generate revenue from the fee charged to online readers. However, doing so will limit the size of the online audience and further reduce online advertising revenue. At the same time, by providing a high-quality online version and charging for it, the price of the print newspaper must stay low in order to lure high valued readers. On the contrary, if the publisher provides an online version of the print newspaper for free, she can obtain a larger audience for the online version. At the same time, by providing a low-quality online newspaper, the publisher can increase the print newspaper price to get more revenue from high valued offline readers, although no revenue is incoming from online version readers. Through systematic measuring of all the pros and cons, our analysis shows that the optimal option is not "fee" but "free."

• 자원ㆍ환경경제연구
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• 제29권1호
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• pp.47-89
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• 2020

본 연구는 한국의 천연가스시장에 경쟁을 도입하는 정책이 사회후생에 미치는 영향을 이론적으로 분석하였다. 기존의 독점기업은 천연가스의 저장/운송을 위한 필수설비를 보유하고 있으나, 경쟁도입을 위해 신규기업 진입 시 필수설비를 공유해야 하는 의무를 지게 되었다. 독점기업이 천연가스의 가격과 필수설비 접속료를 자유롭게 설정할 수 있는 경우, 신규기업의 진입은 사회후생을 증가시킬 뿐만 아니라 독점기업의 이윤도 증가시킨다. 그러나 정부가 가격규제를 시행하는 경우, 설비 운용비용에 대한 정보의 비대칭성이 있는지의 여부에 따라 사회후생이 결정된다. 정부가 완전한 정보를 가지고 있는 경우에는 사회후생을 극대화하는 선택을 쉽게 유도할 수 있으나, 그렇지 않은 경우 정부는 불완전한 정보를 바탕으로 가격규제를 시행하게 된다. 본 연구에서는 정부와 기업들의 의사결정을 베이지안 게임을 통해 분석하여, 완전 베이지안 균형 아래서 독점기업이 공개하는 정보의 양에 따라 사회후생이 어떻게 변화하는지 살펴보았다.

• Smart Structures and Systems
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• 제11권5호
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• pp.555-567
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• 2013

An Remote Corrosion Monitoring (RCM) system consists of an anode with low potential, the metallic structures against corrosion, an electrode to provide reference potential, and a data-acquisition system to ensure the potential difference for anticorrosion. In more detail, the data-acquisition (DAQ) system monitors the potential difference between the metallic structures and a reference electrode to identify the correct potential level against the corrosion of the infrastructures. Then, the measured data are transmitted to a central office to remotely keep track of the status of the corrosion monitoring (CM) system. To date, the RCM system is designed to achieve low power consumption, so that it can be simply powered by batteries. However, due to memory effect and the limited number of recharge cycles, it can entail the maintenance fee or sometimes cause failure to protect the metallic structures. To address this issue, the low-overhead energy harvesting circuitry for the RCM systems has designed to replenish energy storage elements (ESEs) along with redeeming the leakage of supercapacitors. Our developed energy harvester can scavenge the ambient energy from the corrosion monitoring environments and store it as useful electrical energy for powering local data-acquisition systems. In particular, this paper considers the energy harvesting from potential difference due to galvanic corrosion between a metallic infrastructure and a permanent copper/copper sulfate reference electrode. In addition, supercapacitors are adopted as an ESE to compensate for or overcome the limitations of batteries. Experimental results show that our proposed harvesting schemes significantly reduce the overhead of the charging circuitry, which enable fully charging up to a 350-F supercapacitor under the low corrosion power of 3 mW (i.e., 1 V/3 mA).