• Proceedings of the KIEE Conference
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• 2004.05b
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• pp.186-191
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• 2004

전력계통에서 역률개선을 위해 사용하는 전력용 콘덴서(이하 SC bank)는 전력계통의 운전상 전압 제어와 역율개선이라는 두가지 측면에서 매우 중요한 전력설비이다. 또한 최근에 전력산업 구조조정에 의해 발전분야가 분할되는 시점에서 SC bank의 역할의 중요성이 강조되고 있다. 본 논문에서는 SC의 고장원인이 무엇인지를 현장조사를 통해 수행하였다. 그 결과 SC bank를 구성하고 있는 리액터, 콘덴서, PT, 혹은 CT 흑은 방전코일의 열화원인이 대부분 차단기의 투입서지와 차단서지에 의해 발생되고 있음을 확인하였다 또한 기존의 보호시스템은 SC Bank의 보호에 적합하지 않음을 검토하였다 차단기 서지에 대한 대책으로는 투입시 전압영점투입과 중성점 저항기의 취부로 투입서지 및 차단서지를 효과적으로 감소되는 현상을 모의와 현장실측을 통해 확인하였다. 또한 기존의 보호방식이 과전류와 과전압 부족전압 혹은 CT와 PT를 이용한 차동방식에 의해 셀의 경련변화를 감지하고 있으나 이 경우 보호맹점이 존재하게 됨을 검토하였다. 이러한 보호상의 문제점을 보완하는 방법으로 SC bank는 임피던스가 늘 일정하는 점에 착안하여 전압과 전류를 이용하여 임피던스의 변화량을 감시하고, 또 한가지 방법은 SC bank의 운전특성상 무효전력만을 발생시킨다는 점에 착안하여 만일 유효전력 성분이 SC bank에서 감지된다면 소자의 이상이나 비정상적은 전류경로가 된다는 결론에 도달하고 유효전력감시를 통한 SC bank의 열화감지가 가능하다는 결론에 도달하였다. 본 논문에서 제안한 3가지의 방법, 즉, 첫째 영점투입차단기 채택, 둘째, 중성점 저항기의 도입, 셋째 새로운 보호방식에 의한 기존의 보호맹점의 보완을 제안하였다. 위의 새로운 제안을 현장에 적용하는 경우 제작사의 제작불량을 제외한 운전상의 SC bank의 문제점 및 고장빈도는 현저히 감소하게 될 것으로 사료된다.

• Parasites, Hosts and Diseases
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• v.59 no.5
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• pp.457-464
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• 2021

Cystic echinococcosis is a zoonotic parasitic disease caused by Echinococcus species. Tanzania is one of the endemic countries with cystic echinococcosis. This study focussed on identifying genotypes of Echinococcus spp. in Tanzania. We collected 7 cysts from cattle in Mwanza municipal (n=4) and Loliondo district (n=3). The cysts from Mwanza were all E. ortleppi and fertile. In contrast, the cysts from Loliondo were all E. granulosus sensu stricto and sterile. Two from the 4 cysts were a new haplotype of E. ortleppi (G5). These results can improve the preventive and control programs for humans and livestock in Tanzania. To our knowledge, this study is considered the first to identify the genotype and haplotype of Echinococcus spp. in Tanzania.

• 한국약용작물학회:학술대회논문집
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• 2008.11a
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• pp.259-260
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• 2008

• 한국약용작물학회:학술대회논문집
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• 2011.09a
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• pp.82-83
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• 2011

• Asia pacific journal of information systems
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• v.6 no.1
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• pp.75-108
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• 1996

Expert Systems (ES) have been successfully applied to bank loan decisions. However, with regard to bank loan decisions, most loan officers approach the acquisition of an ES with apprehension, which implies that organizational resources devoted to the development and implementation of ES may have been wasted or misused. Because the primary cause of the users resistance to use ES are more significantly related to the behavioral elements rather than technical elements, applying appropriate behavioral theory to the well representative sample group of the whole bank loan officers in the United States with a very accurate measurement tool can provide some clues for developing successful ES for bank loan officers. In this study : 1) Vroom's (1964) expectancy theory was selected to explain bank loan managers' motivation to use an ES ; and 2) the ANN model's prediction power to estimate bank loan officers' motivation levels of using an ES was examined.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.13
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• pp.605-630
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• 2000

A letter of credit plays very important roles in rational and smooth international trade. But the parties to letter of credit transactions can bring about many troubles and losses in such transactions because of ignorance and limits of their rights and responsibilities. The purpose of this study is to analyze a legal position of confirming bank and limits of responsibilities of the confirming bank on the UCP and authoritative decisions by ICC. I attempts to analyze a legal position of confirming bank and limits of responsibilities between the confirming bank and the contract parties at the documentary credit transactions on the basis of theoretical, lawful, and international transactions.

• International Commerce and Information Review
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• v.9 no.2
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• pp.123-140
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• 2007

This paper wants to suggest some issues on the acceptance of payment order in Electronic Funds Transfer of USA. The result can be summarized as fellows; First, originator's bank accepts a payment order when it executes the order. Secondly, beneficiary's bank accepts a payment order at the earliest of the following times: (1) when the bank pays the beneficiary as stated in Section 4A-405(a) or 4A-405(b), (2) when the bank notifies the beneficiary of receipt of the order or that the account of the beneficiary has been credited with respect to the order unless the notice indicates that the bank is rejecting the order or that funds with respect to the order may not be withdrawn or used until receipt of payment from of the order. (3) when the bank receives payment of the entire amount of the sender's order pursuant to Section 4A-403(a)(1) or 4A-403(a)(2). Lastly, the acceptance of a payment order cannot occur before the order is received by the receiving bank.

• Journal of the Korea Institute of Military Science and Technology
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• v.11 no.3
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• pp.146-153
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• 2008

High-power communication jammer has to include the switched filter bank to eliminate the harmonic signals generated by amplifier. Generally, the switched filter bank consists of in-out switches and several filters. This paper describes the design of high-power switched filter bank, particularly the high-power filter bank operating over 20$\sim$110MHz frequency range. The filters designed have insertion loss less than 0.3dB, VSWR less than 1.25:1, and harmonic suppression more than 35dB. Also, the switched filter bank can endure upto 2kW high-power signal with very low harmonic level within $30{\mu}s$ switching speed.

• 한국약용작물학회:학술대회논문집
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• 2007.11a
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• pp.324.2-324.2
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• 2007

• The Journal of Industrial Distribution & Business
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• v.6 no.2
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• pp.17-24
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• 2015

Purpose - The main goals of this study are (1) to study the information sources used the most by customers of Islamic banks; and (2) to compare this with conventional bank customers. Research design, data, and methodology - 125 Islamic bank customers and 125 conventional bank customers were surveyed. The study employed two independent sample tests. Additionally, an exploratory study was conducted to support the quantitative analysis. Result - The results show that Islamic bank customers use personal as well as marketing information sources more intensely than conventional bank customers, although the result differences were not significant. Specifically, customers of Islamic banks use certain personal resources (parents and friends) and marketing information (marketers)intensely than conventional bank customers. Conclusion - The study revealed that friends and parents are the most important information sources for the selection of the Islamic bank. In addition, based on the resources used, Islamic banking customers can be classified as traditional and religious communities. Therefore, the most effective customer communications will be through Islamic groups such as Islamic social institutions and Islamic educational institutions.