• Current Photovoltaic Research
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• 제10권2호
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• pp.62-71
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• 2022

The Global RE100 campaign is a one of the voluntary campaign, but it has a lot of influence on domestic companies that have not yet joined the Global RE100. Accordingly, the Korean government introduced the Korean RE100 (K-RE100) system to prepare an institutional mechanism for domestic companies to respond to RE100. However, in Korea, due to the high LCOE of renewable energy and institutional limitations of the power transaction system, there is a limit for companies to implement RE100 in various ways. Therefore, in this study, the implementation cost of RE100 for green tariff, REC purchase, third-party PPA, direct(or corporate) PPA, and self-generation was compared and analyzed to derive the order of implementation with the net present value (NPV) of costs incurred over 20 years. As a result, self-construction was analyzed as the most economical method, but the implementation through the green tariff seemed to be the most realistic implementation method so far. However, considering the gradually falling LCOE, third-party PPA and direct PPA could be secured competitiveness against green tariff in 2025 and 2026. Then it could allow the companies to have various portfolios for implementation of RE100.

• 통상정보연구
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• 제18권3호
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• pp.23-43
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• 2016

과거에 비해 현재 소비자는 제품 및 시장 관련 다양한 국내외 정보에 접근할 수 있게 되었다. 전통적으로 B2C는 개별국가의 범위 내에서 진행되어 왔다. 무역이나 해외시장에 전문적인 지식이 부족한 일반 소비자는 국가 간 B2C 유형인 해외직구에 대해 대체로 친숙하지 않거나 심지어 두려움을 가진다. 하지만 B2C 영역이 더 이상 국내거래에만 국한되지 않고 있다. 또한 Amazon, eBay 등 글로벌시장에서 활동하는 거대한 B2C 업체들이 등장하고 있다. 이에 따라 해외직구의 규모도 급성장하고 있다. 본 연구는 국가 수준의 자료를 활용해 해외직구에 대한 체계적인 분석을 진행하고자 한다. 구체적으로 해외직구 관심도와 관련 소비자 개방성, 혁신성, 제도환경 순응성 등 개별국가 소비자 특성의 영향력에 대해 분석을 실시한다. 특히 시장 불확실성, 물류 인프라 등 개별국가의 외부 환경의 조절효과를 함께 분석하고자 한다. 이론적인 측면에서는 자원기반이론(RBV, Resource-Based View), 제도이론(Institutional Theory), 거래비용이론(TCA, Transaction Cost Analysis), 온라인 쇼핑 수용모델(OSAM, Online Shopping Acceptance Model) 등을 활용해 해당 변수에 대한 이론적 근거를 제시하고자 한다.

• KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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• 제5B권2호
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• pp.137-141
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• 2005

A transverse flux, PM-exited linear motor (TFM-LM) with inner mover was designed and built. Its output power density is higher and its weight is lower than those of the conventional PM exited linear synchronous motors (PM LSM). To obtain the maximum thrust force under the given volume, the thrust force density with respect to the ratio of the slot width and the length of pole pitch is analyzed by the 3-dimension finite element method (FEM). Finally, calculated static thrust forces was compared with the experimental values. The calculated and measured performance of the transverse flux, PM-exited linear motor with inner mover revealed great potential for system improvements by reducing the mass of the linear motor. For examples, when this motor was applied to a ropeless elevator, it was possible to increase the power density by more than 400% over the conventional PM-LSM. The results of this study recommend this type of motor for the ropeless elevator or gearless direct linear driving system.

• KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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• 제5B권2호
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• pp.154-161
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• 2005

In the machine tool industry, direct drive linear motor technology is an interesting means to achieve high acceleration, and to increase reliability. This paper analyzes and compares the characteristics of a tubular linear motor with Halbach and radial magnet array, respectively. First, the governing equations are established analytically in terms of the magnetic vector potential and two dimensional cylindrical coordinate systems. Then, we derive magnetic field solutions due to the PMs and the currents. Motor thrust, flux linkage and back emf are also derived. The results are shown to be in good conformity with those obtained from the commonly used finite element method. Finally, control parameters are obtained from analytical solutions.

• 통상정보연구
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• 제11권4호
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• pp.3-23
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• 2009

Social surveys, using various factors influencing the e-commerce's development of SMEs, are the means of explaining the rapid development of e-commerce. This makes it possible to make more efficient decisions in e-commerce. This article was written from surveys conducted in the manufacturing industry and Trade Company at Jilin Province via e-mail, fax and analyzed data by Statistical Package for the Social Sciences (SPSS). The result shows that in development of e-commerce, the business partners have significant impacts on the achievement of e-business both directly and indirectly. Second, consciousness of leaders, external support, transaction partner relationship and influence of competitors cause a direct result on the development of e-commerce On the other hand, the innovative capacity of enterprises and communication indirectly influence. Based on these, it is valid for us to for us to make correct decisions for the e-commerce development of SMEs.

• Journal of Chest Surgery
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• 제21권6호
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• pp.990-995
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• 1988

Seventeen cases of vascular injuries treated in Chungnam National University Hospital during the period from Apr. 1980 to Sep. 1988 were reviewed. Common causes of injuries were stab wound, automobile accidents and iatrogenic injuries. Of the 11 arterial injuries, 3 were femoral artery which was the commonest in frequency, the next was 2 cases of subclavian, common carotid, iliac artery. Of the 10 venous injuries, the subclavian vein and internal jugular vein were common in frequency. The most frequent type of injuries was laceration[13 cases in 21]. Vascular reconstruction was done by lateral suture repair in 8 cases, autogenous vein graft in 2, prosthetic vascular graft in 5, direct anastomosis in 1 case. Simple ligation was done in 5 cases. There was 1 case of visual field defect as a sequelae in right common carotid artery transaction and 1 case of mortality.

• 한국중재학회지:중재연구
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• 제9권1호
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• pp.323-365
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• 1999

The digital revolution is happening much more quickly and Internet Commerce and Electronic Commerce is having a profound influence on the global trade and internal commerce, revolutionize the way of doing business, especially retail and direct marketing. Owing to Internet, an increasing share of business transactions occurs online. Electronic payment is essential for the smooth progress of the electronic commerce as electronic payment plays the important role in the electronic commerce, that is, the value transfer resulting from the electronic commerce. So far, there have not been a considerable emphasis on the risks residing in the electronic payment and money. So, this paper deals with the risks in the electronic payment and money, in particular technical risks and social risks, and the reliability-increasing schemes to prevent the risks in the electronic payment. The reliability-increasing schemes relate to the security of the electronic payment systems and certification authority and key management, transaction rules between the parties concerned in the electronic payment.

• 한국경영과학회지
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• 제22권1호
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• pp.159-182
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• 1997

This study is to establish the validity of EDI adoption model Korean Companies. The research model is hypothesized in the external factors of company directly affect on EDI adoaption and the internal factors of company moderately affect on the direct effect. The external factors of company consists of economic factors, organizational power factors, and technological factor. The internal factors of company consists of the size of the company, innovative tendency of the top management, and maturity of the information technology. In the result of data analysis-the data were collected from a total of 81 companies in 6 industries adopted variables are the existence of EDI standard, transaction frequency, inter-organizational bargaining power, and pressure from industry association. Also size of the company and innovative tendency of the top management in a company's internal factors were adopted as moderate variables.

• 디지털산업정보학회논문지
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• 제5권4호
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• pp.51-59
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• 2009

Many failures are due to incorrectly programmed transactions and data entry errors. System failure causes the loss or corruption of the contents of volatile storage. Although global processing protects data values to detect direct or indirect information effluence, security environments are very important in the recovery management of heterogeneous systems. Although transaction can't control system fault, the restart for the system can cause information effluence by low bandwith. From various faults, it is not easy to maintain the consistency and security of data. This paper proposes recovery management protocols to assure global multilevel secure one-copy quasi-serializability in security environments of heterogeneous systems with replicated data and proves its correctness. The proposed secure protocols guarantee the reliability and security of system when the system fault is happened.

• 한국조리학회지
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• 제5권2호
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• pp.353-371
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• 1999

Korean foodservice's circulation industry has been developed with enforcement plan of circulation modernization for the purpose of circulation construction improvement in 1992 and revision plan of circulation modernization plan preparing circulation market opening in 1995. But Korean circulation step is still in an early stage compare the advanced nations, so it has a bad effect in case the price competition and the profits, A circulation industry has originally premodenization. But it could be changed leading industry of 21 century, because it can used not only latest technique through information network but also leisure market of consumption industry. We must be enough a purchase condition of direct transaction from a minimum of circulation in order to compete with new business industry of advanced nations. Threfore the scheme for the development of foodservice industry should be improve a circulation management environment of circulation company, also the government should be improve the system in the policy. Both the government and the enterprose must reinforce efforts for high level competition more than the present states. From the view point of the bedelayed industry of all industries, the chance of new business will be created more than others.