• 대한전기학회논문지:전력기술부문A
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• 제51권6호
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• pp.284-289
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• 2002

The transmission networks do not consist of perfect conductors and a percentage of the power generated is therefore lost before it reaches the loads. Since this network loss contributes to the cost of suppling power to consumers, it must be considered that the most efficient dispatch and location of generators and loads are to be achieved. In this paper, marginal loss factors are calculated for 12 load levels that represent the impact of marginal network losses on nodal prices at the transmission network connection points at which generators are located. Based on comparison analysis of marginal loss factors on 12 load levels, we found the MLF characteristics in KOREA.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2002년도 추계학술대회 논문집 전력기술부문
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• pp.212-214
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• 2002

Existence of leverage points was claimed to be the reason for the WLAV estimator failing to reject bad data in the measurements. This paper presents an impact of leverage points on the result of power system state estimation. State estimator is run with measurement sets with gross error and leverage point. Three test cases are performed and the results are presented using IEEE 30 bus system.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2002년도 합동 추계학술대회 논문집 정보 및 제어부문
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• pp.472-475
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• 2002

This paper presents a high speed ethernet communication and depulication method of communication to prevent decrease of reliability that was generated by high speed communication. Thus communication reliability was improved and this paper was considered that if any physical breakdown of line of communication occurred, other line of communication could operate collect. This paper used Flash memory for setting storage of backup data at Electric Car that have an humidity and a temperature and an impact. also improved reliability and besides matching data format to windows data format realized to confirm application program at PC or note book computer.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2002년도 추계학술대회 논문집 전력기술부문
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• pp.280-282
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• 2002

As EG(Embedded Generation : photo-voltaic, wind, combined heat and power, fuel cell, small hydro etc.) grows fast in adopting to peak load reducing at the middle or the end of distribution system, there much has been interested in interconnection of EG. This paper discusses the various issue of a embedded generator to power system and shows the simulation of its various situation that could happen (focusing on load-flow by EG) by using a commercial software CYME(PSAF) for load-flow. With a result of above simulation, this paper shows a way of possible solution briefly.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2002년도 하계학술대회 논문집 C
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• pp.1467-1469
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• 2002

This paper aims to investigate the characteristics of braided thermoplastic and thermosetting composite and pressure relief for polymer arrester. In general, braided composite has potential for improved impact and delamination resistance. Manufacturing processes of the braided composite could also be automated and could potentially lead to lower costs. Therefore, in consideration of characteristics of pressure relief for polymer arrester, the fabric pattern of braided composite was studied. And polymer arrester module was manufactured with braid.

• 자원ㆍ환경경제연구
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• 제24권3호
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• pp.551-572
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• 2015

지구 온난화와 그에 따라 발생빈도가 늘어난 이상기온 현상으로 인해 제조업과 서비스 업종에서 감당해야 할 기후위험 역시 증가하는 추세에 있다. 본 연구는 Pardo et al. (2002)이 이용한 간단한 실증모델 추정을 통해 품목별 기후리스크를 측정한다. 실증분석의 결과, 제조업 품목의 26.7%, 서비스 업종의 27.9%가 날씨여건에 따라 판매량이나 경영성과에 유의미한 변화를 경험하고 있는 것으로 나타났다.

• The Journal of Asian Finance, Economics and Business
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• 제3권2호
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• pp.33-39
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• 2016

This study empirically evaluates the impact of exchange rate volatility, foreign direct investment, terms of trade, inflation, and industrial production and foreign exchange reserves on Pakistani trade volume over the period of 1975-2010 using quarterly data set. The study employs financial econometrics methods such as Augmented Dickey Fuller (ADF) test GARCH (1, 1) technique and Almon Polynomial Distributed Lag (APDL) models to estimate the relationship of variables. Findings of the study are in accordance with theoretical relationships presented by Clark, Tamirisa, Wei, Sadikov, & Zeng (2004), McKenzie (1999), Dellas & Zilberfarb (1993) and Côté (1994). These findings are also in accordance with the empirical studies which support positive relationship of exchange rate volatility and exports presented by Hsu & Chiang (2011), Chit (2008), Feenstra & Kendall (1991), Esquivel & Larraín (2002) and Onafowora & Owoye (2008). Findings of the study in terms of imports are supported by the studies such as Lee (1999), Alam & Ahmad (2011) and Arize (1998). The study also recommends some very important policy prescriptions.

• 한국시스템다이내믹스연구
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• 제3권2호
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• pp.93-112
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• 2002

Over the past ten years, a new knowledge-based information society is coming up with a new paradigm shifted from the Industrial Society. According to this paradigm, Korea's policies of informatization on public administration affairs are shaped and promoted by several responsible bodies, including the Ministry of Government administration and Home affairs, the National Computerization Agency, as well as central and local Governments. But most informatization actions, especially standard information system projects, have done separately by the Ministries of central government. Besides, because of the absence of informatization strategy in local governments such as cities, counties, etc., they pursue separately various informatization projects on administration affairs by divisions. It is a critical problem not to manage systematic and unified promotion of information systems policies on administration affairs in local government. As an initial attempt to tackle the problem listed above, by introducing systems thinking this paper puts an effort to find some tentative answers to solve the problem possibly raised about the impact by Standard Information System Policy on which little research has been conducted so far. The findings presented in the paper would perhaps provide some ideas and directions for further study.

• 한국경영과학회지
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• 제27권4호
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• pp.149-165
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• 2002

This study establishes key factors on ISM (Internet Shopping Mall) performance in Korea. The four factors are derived from the relevant literature and clarified the concept of ISM characteristics, customer characteristics, ISM evaluation level. and perceived risks by distinguishing between its components and determinants. ISM performance indicators were derived from the previous studios classifying by ISM attitude and ISM usage. We examine on the impact of ISM characteristics and customer characteristics on the ISM evaluation level, then its level and perceived risks on the ISM performance. Hypotheses on four factors of ISM performance were tested for 172 respondents. Results indicate that four factors may partially serve as key predictors on ISM performance. ISM characteristics and customer characteristics was found to be positively influenced on ISM evaluation level, and its level also positively affected on ISM performance while perceived risks negatively affected on ISM performance.

• 한국경영과학회지
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• 제27권2호
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• pp.123-152
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• 2002

This study establishes key success Predictors of internet venture enterprises in Korea. The five factors are derived from the relevant literature and clarified the concept of entrepreneurship, industrial level, enterprise strategy, organizational capability, and resource procurement by distinguishing between its components and determinants. Organizational performance indicators were derived from the previous studies classifying by financial performance indicator and non-financial performance indicator using by recent evaluation method as BSC (Balanced Scorecard). We then examine the impact of critical success factors on the internet venture performance. Hypotheses on five factors of internet venture were tested for 103 organizations. Results indicate that critical success factors may serve as key predictors. Organizational strategy and resource capability was found to be positively influenced on both financial performance indicator and non-financial performance indicator while entrepreneurship, industrial level and organizational capability positively affected only non-financial performance indicator.