• 플랜트 저널
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• 제7권2호
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• pp.44-51
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• 2011

Given the fact that the entire bituminous coal used for a boiler is imported, the supply of coal is often affected by the rise of international coal price. Moreover, coal suppliers have been diversified due to the competition among power generation companies for reducing costs and inexpensive sub-bituminous coal is used. As a result, boilers combustion conditions have been deviated from the initial boiler design. This requires the selection of adequate excessive air ratio for different combustion conditions to enhance the efficiency of boiler operation. The boiler efficiency has been identified through an examination on the change of excessive air ratio by mixed fuel in unit 8 of Dangjin power plant complex. In addition, an excessive air ratio was calculated based on the examination result. According to the study result, the adequate excessive air ratio was 13% when Macquarie and Powder river were mixed at a ratio of 5:5 and when Sonoma and Megaprima persada were mixed at a ratio of 5:5. When BHP Billiton and Powder river were mixed at a ratio of 4:6 and Centennial and Batubara were mixed at a ratio of 3:7, the adequate excessive air ratio was 11%.

• 경영과정보연구
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• 제28권2호
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• pp.21-39
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• 2009

이 연구는 국가별로 납세자들의 납세순응수준을 결정하는 요인들에 대한 분석을 통하여 납세순응수준을 높이기 위한 대안을 모색하는 것이며 이를 위하여 납세자의 조세윤리(tax morale)의 결정요인으로 경제적인 요소뿐만 아니라 Hofstede (1980)의 문화적인 요소가 조세순응(tax compliance)의 현상을 설명하는지 국제적으로 다르게 나타나는가를 실증분석을 통하여 조세순응의 결정요인을 확인하는데 그 목적이 있다 이를 위하여 38개국 5년간 총 190개의 관측치를 이용하여 검증하였으며 검증결과를 요약하면 다음과 같다. 효율적 경쟁법(effective competition law)의 수준이 높을수록, 경제적 자유수준이 높을수록, 정부정책의 투명성이 높을수록 조세순응수준이 높은 것으로 검증되었다. 반면에 지하경제규모가 클수록, 권력거리의 성향이 클수록 조세순응수준이 낮은 것으로 나타났다. 이와 같은 결과는 납세자는 왜 세무당국자에게 조세와 관련하여 저항하고 또한 조세순응(tax compliance)의 상황이 왜 나라마다 차이가 나는가에 대한 원인을 규명하여 납세순응도를 높이기 위한 정책대안이 될 수 있음을 보여주고 있다.

• 한국항만경제학회지
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• 제17권1호
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• pp.27-51
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• 2001

The purpose of this paper is to investigate the productive efficiency of world container ports by using the DEA (Data Envelopment Analysis) method and raw data from previous research in measuring the international competitiveness of world container ports. Ports have to cope with rapid changes in shipping environments. In order for a port to compete in the global market, it must provide port services promptly and accurately. Basically, there are two approaches to measuring the international competitiveness of a container port. First, there is the traditional productivity analysis method, which analyzes productivity based on the container port's facilities (efficiency, selectivity, land availability), and by its general capacity (handling ability, storage capacity, terminal productivity). Second there is multi-attribute utility analysis, which considers several elements including the reasons for selecting particular container ports and factors determining international competitiveness. This paper follows the first method (traditional productivity analysis) and extends the limitation of previous studies by using the DEA method newly, and suggesting: the relative productive efficiency of container ports. The main results of this paper are as follows: First, the results of the DEA analysis in terms of world container ports matches that of a previous study (Jun et al., 1993) at a level of 35%. The low ratio is due to the constrained set of input-output elements, the result of only twenty container ports being analyzed in this paper. Second, the result of the DEA analysis in terms of North-East Asia's container ports matches with that of a previous study (Ha, 1996) at a level of 100 percent. Therefore we can conclude that the DEA analysis is the best measurement method for international competitiveness. Policy implications for this study are as follows: First, when port authorities want to measure the international competition power of container ports and enhance their productive efficiency, they should consider the traditional method and newly introduce the DEA method. Second, according to the analysis results of the DEA method, pen authorities should recommend benchmarking ports as reference ports in order to enhance the productive efficiency of container ports that show an efficiency score of below 1.

• Journal of Korea Trade
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• 제25권2호
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• pp.111-133
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• 2021

Purpose - Although remittance payment in international trade settlements has played a bigger role in recent years, scant research is being done. This study is to zero in on analyzing determinants of international trade payments focused on remittance by constructing a payment prediction model. Design/methodology - This study categorizes the types of trade payments into advance remittance, post remittance, linked remittance, letter of credit, and mixed payment, and analyzes these after constructing a logit model. For empirical analysis, 147 survey data were collected for export manufacturers in Korea, and binominal logistic regression analysis was used to analyze the type of payment method the exporter chooses for trade transactions. Findings - The likelihood of choosing advance remittance increased as the exporters had non-recovery experiences with payments, and decreased as the market power of importers increased. The possibility of post remittance increased when the export amount was large and the character of the buyer was reliable. In the case of linked remittance, it was highly likely to be selected when payment efficiency was important in trade settlement. In addition, when competition among companies in the global market is intense and market uncertainty is high, the possibility of using a letter of credit decreases. It was also found that the greater the export amount, the greater the possibility of choosing advance remittance, and even if the transaction period was longer, exporters using a letter of credit continued to use it. Originality/value - Despite the high proportion of remittances in international trade settlements, it has been hard to find studies that reflect the practical characteristics of remittances. This study classified the types of remittance into advance remittance, post remittance, and linked remittance, and built a trade payment prediction model by adding a letter of credit and mixed payment. In addition, the originality of this study is recognized in that a logistic model was constructed and meaningful results were derived.

• 한국콘텐츠학회논문지
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• 제5권2호
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• pp.165-175
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• 2005

세계적으로 게임 산업은 문화 콘텐츠 산업의 핵심으로 인정받으면서 2008년경에는 전체규모가 1,000억 달러를 넘어서며 문화 콘텐츠 산업 성장을 실질적으로 주도할 것으로 예상된다. 이러한 추세에 맞추어서 한국 게임 산업의 국제적인 경쟁력을 높이고 지배적인 위치를 점하기 위해서는 현재 세계적인 게임 시장내에서 우의를 점하고 있는 요소들에 대한 재점검과 발전 방향에 대한 연구과 필요한 시점이다. 본 논문은 IT 기술의 급속한 발전과 그에 따른 홈 네트워킹, 유비쿼터스(Ubiquitous) 환경이 본격적으로 조성이 되면서 앞으로 세계시장에서 더욱 더 강한 경쟁력을 갖추기 위한 요소들 중 게임 그래픽 제작 파이프라인의 하나인 텍스쳐 매핑 제작 체계에 대한 효과적인 파이프라인의 구성에 대해 연구하고 발전방향을 제시 하는데 그 목적이 있다.

• 한국산업정보학회논문지
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• 제13권5호
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• pp.106-116
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• 2008

본 연구는 국내의 경제상황을 판단하여 특허권의 유통을 활성화시키고 기술력을 바탕으로 하는 기업과 기술의 가치평가에 종사하는 사람들에게 방향을 제시하기 위해 문헌조사, 사례연구를 중심으로 수행하였으며 특허권의 가치평가에 대한 개념정립을 위해 우선 특허권에 대한 다양한 접근방식과 관계요인, 이론 그리고, 특허권을 다양한 국 내외 문헌을 중심으로 정리 요약하였다. 또한, 라이센스교섭이나 그 외의 거래시 무형자산이나 지식재산의 이용과 관련한 적정한 로열티의 비율 및 특허권 침해의 액을 산정하는데 기본이 되는 특허권의 가치를 평가하는 방법을 제시한다. 더불어 주요가치평가 기법을 제시하고, 가치평가 기법의 문제점과 개선방향을 통해 새로운 가치평가방법의 새로운 방향을 고찰해보며, 특허권의 거래 및 활성화를 위한 대안, 특허권의 가치평가제도를 위한 대책을 제시한 국내 가치평가의 문제점과 국내 모 평가회사의 분석사례 및 시사점을 통해 국내기술에 대한 가치평가의 방법과 제도적, 환경적 문제의 발전방향에 대해 제시하고자 한다.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2004년도 추계학술발표회
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• pp.77-81
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• 2004

동북아 지역은 수 십년 동안의 발전으로 세계 경제무역의 핵심지역이 됐다. 그러므로 동아시아 지역의 컨테이너 물동량도 빠른 속도로 증가하고 있다 이 지역의 항만발전에 따라 각 국은 국제 해운 중심지를 앞 다투면서 노력하고 있다. 상하이와 직접적으로 경쟁할 수 있는 항만은 부산, 고베, 카오슝 등 3개 항만이다. 본 논문 중에서는 이상 3개 항만과 상하이항의 현황을 소개했다. 그 중에서도 상하이항의 장단점을 분석하여 4개항만의 하드웨어 및 소프트웨어 시설에 대해 비교분석을 했다. 마지막에는 상하이항의 구축에 대한 몇 가지 구체적인 조치에 대해 논의를 했다.

• Journal of Contemporary Eastern Asia
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• 제20권2호
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• pp.157-173
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• 2021

In the transition to a multipolar international system, the literature has focused on great power competition while little attention has been given to the strategic possibilities of smaller states. However, as a result of globalization, states are so closely interconnected that the primary strategies of even major powers are not to achieve zero-sum solutions but to create asymmetric dependency through which they can influence the behavior of other states and non-state actors. States are assisted in this effort by a variety of tools, including setting up institutions, direct economic influence and through building different forms of infrastructure connectivity networks. By discussing asymmetric dependency situations from the perspective of the great powers, the literature presents smaller states primarily as passive actors, paralyzed by their dependence on great powers. Our paper argues that interdependence allows smaller states to effectively influence larger actors and examines strategies from which smaller states can choose in order to influence the behavior of larger states. Despite an extremely asymmetric relationship between Myanmar and China, actors in Myanmar have sought to influence China's Myanmar policy. We examine a case study of the Myitsone Dam, including Myanmar's strategic aims, chosen strategy and limitations in maneuvering space. Semi-structured interviews with local decision-makers and stakeholders are conducted in order to portray the full picture. Our study concludes that further research on the influencing strategies of small states in response to asymmetric dependence can contribute to a better understanding of the interdependence of states.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2011년도 추계학술대회
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• pp.179-180
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• 2011

본 논문은 IEEE 주최 국제대회 "2011 International Future Energy Challenge Competition (IFEC'11)"에 출품한 서울과학기술대팀의 차량탑재형 3.3kW급 배터리 충전기의 개발에 관한 것이다. 제안한 배터리 충전기의 부스트컨버터는 역률보상과 동시에 배터리의 전압 전류 제어를 수행하게 하여 절연부 SRC를 고정주파수에서 동작시킴으로서 전부하 영역에서 스위치와 다이오드의 ZCS 턴온과 턴오프가 성취되고 최적설계가 가능한 특징을 갖는다. 최대효율 94.6%(최대부하효율 92.6%), 부피 7.6L를 달성하였다.

• 산업경영시스템학회지
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• 제19권40호
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• pp.351-360
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• 1996

Korean construction companies are now in very difficult situation due to the recent construction accident, opening of domestic market, the advent of boundless competition period in WTO, etc .Introduction of quality management system is quite urgent in order to strengthen our international competitiveness through the superiority of quality and foster the long term growth of organization. Substantially, many companies are proceeding with or completed the introduction of quality management system but small and medium sized construction companies have difficulties due to lack of money and man power. In this paper, five stage procedures, which can be efficiently applied to introduction and operation of qualify management system, have been suggested to help the minor construction companies which want to adopt the quality management system. This study is considered to be helpful for the companies which will introduce quality management system.