• 한국통신학회논문지
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• 제36권4B호
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• pp.412-421
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• 2011

선박경제운항이란 기상예측정보를 활용하여 연료소모량을 최소화하도록 선박을 운항하는 것으로서 최근 많은 시스템이 이를 위해 연구되고 있다. 기존의 시스템에서는 문제의 복잡성을 줄이기 위해 엔진의 출력을 고정하거나 속력을 일정하게 운항한다는 가정을 기반으로 접근하고 있다. 그러나 엔진출력을 잘 조절한다면 더 좋은 기상환경에서 선박이 운항할 수 있게 되어 연료소모량을 더욱 줄일 수 있다. 본 논문에서는 진화전략 알고리즘을 사용하여 항로의 세부구간별로 최적출력을 탐색할 수 있는 새로운 경제운항시스템을 제안하였다. 또한, 지리적 최단 경로를 찾을 수 있는 $A^*$ 알고리즘과 곡선 표현의 자유도를 높일 수 있는 방법을 사용함으로써 임의의 출발지와 목적지에 대해서 제안된 경제운항시스템을 적용할 수 있도록 하였다. 총 36가지의 운항 시나리오에 대해서 이 논문에서 제안된 시스템의 성능을 기존의 출력고정 운항방법과 비교한 결과, 운항소요시간은 거의 차이가 없으면서도 연료소모량을 평균적으로 1.3%, 최대로는 5.6% 개선시킬 수 있음을 관찰하였다.

• Strategy21
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• 통권44호
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• pp.254-290
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• 2018

Why did Kim Jong Un turn his foreign policy upside down in a sudden? US naval blockade became one of candidates for the reason since it had been threatened by Trump administration for the first time in December 2017. Has the blockades worked well like that in the international politic history? This paper reveals the effectiveness of naval blockade on sanctioning in the peacetime. This research analyzes three hypothetical arguments about the naval blockade based on the result of empirical tests with TIES Dataset. First, sanctions by blockading are more effective in gaining political benefits than the other economic sanctions. It was ranked the 4th effective way of sanction out of 9. And 56.3% of pacific naval blockades without packaged economic sanctions were succeeded, whereas the possibility of success increase up to 61.2% when blockade has been imposed in accordance with the other type of economic sanctions. Second, blockades deter military collisions, even war. When it comes to military provocation issue, blockading sanctions gain political interest far more than the other type of economic sanctions. The possibility of the success reaches up to 74%. Also, there wasn't any historical cases of war incurred by blockading sanctions within 5 years after the blockade end. Third, policy makers just need 1.2 years on average to see the end of sanctions when they choose the naval blockade as the method of imposing sanction on the adversary. It is impressively short span of time in achieving political goal compared to the other types of sanctions which are need 9 years on average. North East Asia sea could be the next stage for a naval blockade sooner or later. Because China and Japan not only possess capabilities of blockade but also have will to impose blockades to the others if conditions are set. And even the North Korea with lots of submerging forces could be a blockading threat in the specific area. So, the Republic of Korea has to pay more attention and be prepared for naval blockading sanction.

• Journal of Information Technology Applications and Management
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• 제21권4_spc호
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• pp.345-359
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• 2014

Technological, policy and economic factors are both important variables in maximizing the results of a national R&D program and key indicators in evaluating an R&D program's eligibility for financial support. Economic analysis, in particular, is used when selecting R&D programs, setting priorities, and estimating economic effects. This paper examines a series of methodological issues related to the economic analysis of national R&D programs within the framework of the current preliminary feasibility evaluation system, and proposes alternative approaches to each of the issues discussed. The issues include the definition of R&D valuation and establishment of valuation factors; estimation of sales attributable to R&D investment; assessment of the total economic value of R&D as intellectual assets; estimation of R&D benefits and assumption of related to sales; and the application of discount rates based on the weighted average cost of capital. Finally, this study presents directions for future research on analytical procedures and methods of improving the reliability of the results of economic analysis within the national technology planning system.

• KDI Journal of Economic Policy
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• 제45권1호
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• pp.33-68
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• 2023

The present article investigates empirically whether non-reciprocal trade preferences (NRTPs) offered by QUAD countries (Canada, the European Union, Japan, and the United States) to developing countries have helped to promote economic growth in the beneficiary countries. Two main blocks of NRTPs are considered here: Generalized System of Preferences (GSP) programs and other trade preferences programs. The analysis used a set of 90 beneficiary countries of NRTPs that are concurrently recipients of development aid over the period of 2002-2018. Using the two-step system generalized method of moments, the analysis indicated that while a higher degree of utilization of each of these two blocks of NRTPs has been associated with a high economic growth rate, development aid enhances this positive effect. This highlights the need for donors to support a development strategy based on the provision of both development aid and NRTPs if they are to help beneficiary countries to promote economic growth. Finally, when the positive economic growth effect of the utilization of NRTPs is higher, the result is a greater country's share of exports (under preferential tariffs) to QUAD countries out of their total merchandise exports.

• 한국기술혁신학회:학술대회논문집
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• 한국기술혁신학회 2017년도 춘계학술대회 논문집
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• pp.219-219
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• 2017

This study aims at examining each firm's decision-makings of complex product and system (hereafter CoPS) innovation strategy, so that it tries to reveal the nature and role of CoPS innovations strategy. And it designed a comparative case study along with qualitative methods, by having two mobile operators' digital rights management (hereafter DRM) innovation in South Korea's digital music service industry. Through literature review, this study formulated three research propositions: (i) Each firm's decision-makings of CoPS innovations strategy are analytical negotiation process among economic actors in an industry; (ii) Each firm's market power originated from its market share from the installed base through network effect and switching cost influence decision-makings of CoPS innovation strategies; (iii) Each firm's decision-makings of different CoPS innovation strategies are related to their intension of achieving better market power, consequently dominant design. Through empirical examination of two mobile operators' decision-makings of DRM innovation strategy, this study empirically verified three research propositions.

• 품질경영학회지
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• 제22권2호
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• pp.1-19
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• 1994

There have been few studies which deal with the linkage between a corporate strategy and its management control system. Especially, no empirical study has been done in Korea to figure out if management control systems of Korean companies are designed and implemented to support companies' objectives and strategies. Based on the survey results of 68 companies we empirically tested if Korean companies are implementing appropriate control systems to complement their Quality strategies. Two representative quality strategies were classified into ECL(Economic Conformance-Level) and ZD(Zero-Defect) strategy. It was measured by a set of seven attitude questions addressing whether the managers adhered to ECL strategy or ZD Quality strategy. In addition, we checked if there is a difference m the level of commitment to the quality depending on the adoption of quality cost system. The results partly support the second hypothesis and regarding the first analysis we can conclude that there is not a strong linkage between Korean companies' ZD strategy and their management control systems.

• The Journal of Asian Finance, Economics and Business
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• 제9권2호
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• pp.15-27
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• 2022

The paper addresses the importance of redesigning strategies for resilient and sustainable regional economic development - by applying strategic approaches to free economic zones for the digital economy. The purpose of the paper is to provide a broad comparative perspective on developed versus developing country efforts to use free economic zone programs to enhance various economic and social objectives. First, the paper introduces the chronicle experiences of free economic zone programs in South Korea and mainland China - developed versus developing economies. The main results of the analysis indicate that (1) achieving the goals and objectives of free economic zones is challenging over time; (2) trying to upgrade the technical component, develop knowledge-based and eco-friendly new industries, or value-added to the economy through free economic zone policies is even challenging; and (3) incentives and other program-specific variables are highly context-specific and not structurally correlated with free economic zone performance. In addition, the paper shows that the initial conception of the role of free economic zones has undergone significant change as individual countries have tried to enhance the contributions and avoid damages from incorporating free economic zones into their development strategy respectively, over time.

• 통상정보연구
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• 제18권4호
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• pp.221-262
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• 2016

최근 베트남은 한국의 3대 교역국으로 부상하고 있다. 우리나라는 베트남과 교역규모가 크게 신장하고 있으며, 베트남에 대한 해외직접투자 역시 증가하고 있다. 한국과 베트남의 교역이 신장됨에 따라서 우리나라 기업과 베트남 기업 간의 분쟁 역시 증가할 소지가 크다. 본 연구는 첫째, 베트남의 문화와 제도적 특징을 분석하고자 한다. 둘째, 베트남의 고유한 분쟁해결방식 및 분쟁해결문화를 연구한다. 셋째, 베트남인과의 비즈니스에 있어서 협상전략을 연구한다. 지역연구방법론을 활용하여 연구한 결과 베트남은 여성 및 명예중시문화, 집단주의 문화적 특징을 보이는 것으로 나타났다. 베트남은 협상전략에 있어서 반띤 시스템 등, 중개인을 활용하는 간접적 의사소통방식을 선호하며, 합의에 의한 의사결정, 장기적 협상방식, ADR을 통한 분쟁해결 및 서면합의를 중시하고 있는 것으로 나타나고 있다.

• 대한전기학회논문지:전력기술부문A
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• 제48권12호
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• pp.1498-1506
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• 1999

In this paper, a hybridization of Evolutionary Strategy (ES) and a Two-Phase Neural Network(TPNN) is applied to the optimal environmental and economic operation. As the evolutionary computation, ES is to search for the global optimum based on natural selection and genetics but it shows a defect of reducing the convergence rate in the latter part of search, and often does not search the exact solution. Also, neural network theory as a local search technique can be used to search a more exact solution. But it also has the defect that a solution frequently sticks to the local region. So, new algorithm is presented as hybrid methods by combining merits of two methods. The hybrid algorithm has been tested on Emission Constrained Economic Dispatch (ECED) problem and Weighted Emission Economic Dispatch (WEED) problem for optimal environmental and economic operation. The result indicated that the hybrid approach can outperform the other computational efficiency and accuracy.

• 통상정보연구
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• 제8권2호
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• pp.249-274
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• 2006

This study extensively investigated Japan's FTA strategy and plan of FTA policy and analyzed the economic effect caused by it. In the analysis of economic effect using world economical model shows not only positive economic effect in home country but also to the foreign country. Recently, Japan's bilateral relation with Korea and China is getting worse, not in a friendly way. Consequently Japan's future FTA negotiation will be expected to be focused on the East-Asia region. In other words, Japan expressed assistance for the purpose of communication, stability and prosperity in the East-Asia and will seek individual economic cooperation with each East-Asia country trying to reinforce the stand of Japan. This means that Japan is trying to improve the relation with Korea and China in the other way because it cannot change the relation with Korea and China on its own. That is to say, It can be interpreted as Japan is trying to reinforce the economic cooperation with other East-Asia countries for the realization of East Asia community rather than directly negotiating with Korea or China.