• KSII Transactions on Internet and Information Systems (TIIS)
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• 제9권4호
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• pp.1516-1528
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• 2015

We introduce attribute set based signature (ASBS), a new cryptographic primitive which organizes user attributes into a recursive set based structure such that dynamic constraints can be imposed on how those attributes may be combined to satisfy a signing policy. Compared with attribute based signature (ABS), ASBS is more flexible and efficient in managing user attributes and specifying signing policies. We present a practical construction of ASBS and prove its security in the standard model under three subgroup decision related assumptions. Its efficiency is comparable to that of the most efficient ABS scheme.

• Journal of Korea Trade
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• 제26권6호
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• pp.41-60
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• 2022

Purpose - The policy implications of free trade agreements have traditionally been a matter of debate among economists. The official signing of the Korea-China Free Trade Agreement provides economists with a quasi-natural experiment to analyze the FTA's policy effects. This article aims to more accurately understand the impact of Korea's FTA accession on the macro economy. Design/methodology - This study adopts the counterfactual method based on panel data to find common factors in the generation process of macro data to fit the counterfactual path, to accurately evaluate the effect of the macro policy. Findings - Our research results show that the signing of the Korea-China FTA has a relatively significant short-term positive effect on Korea's economic growth. On average, Korea's real GDP growth rate has increased by 2.1%. This study finds evidence in support of FTA signing not having a significant impact on Korea's GDP growth in the long run. Additionally, we evaluated the impact of the FTA on Korea's imports and exports and found that it had a significant positive impact in the short term, but the trade effect of the FTA is significantly affected by the external macro-environment. Originality/value - First, this study uses macro panel data at the national level to examine the impact of the Korea-China FTA on Korea, and more accurately describes the policy effect of the FTA. Second, our empirical results show that the Korea-China FTA policy impact is subject to occasional changes in the external environment, such as the geopolitical conflict (crisis) between Korea and China, and the US-China trade war. Finally, the analysis shows that the short-term effect of FTA is significant but the long-term is uncertain, which provides empirical evidence for the debate on whether joining FTA can promote national economic growth.

• 디지털융복합연구
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• 제12권1호
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• pp.389-395
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• 2014

바이오메트릭 서명은 서명자의 바이로메트릭 키를 이용하여 서명하는 것으로 서명자는 서명에 앞서 본인임을 인증하는 과정이 필요하다. 바이오메트릭 인증은 매 서명 세션마다 이루어지기 때문에 전자상거래 쇼핑몰과 같이 대규모 서명이 요구되는 응용에는 적합하지 않다. 따라서 바이오메트릭 서명 기법의 실용화를 위해서는 신뢰할 수 있는 제 3자에게 서명 위임을 하여, 서명자의 업무량을 줄일 수 있는 기법이 필요하다. 본 연구에서는 대규모 서명에 적합한 바이오 서명 임대 기법을 제안한다. 제안한 서명 임대 기법은 바이오메트릭 키 생성, PKI 기반의 상호 인증, 서명 생성 및 검증 프로토콜로 구성된다.

• 통상정보연구
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• 제10권3호
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• pp.265-290
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• 2008

Domestic industries are facing the open era as a result of signing the Korea-U.S. FTA with no exception to the financial industry. The FFA between two countries is expected to produce pros and cons for domestic financial industry. Therefore, it is very important to minimize the shock caused by opening our financial market and to adopt the advanced financial tools actively. Signing the Korea-U.S. FTA and enforcing the Integration Law of Capital Market are leading a big crisis to the Savings Banks which have been shrinking under the dramatically changing domestic financial environment since the financial crisis. To cope with financial globalization, Korean Savings Banks are demanded to build up their concrete identity and reposition their status. This is related to shaping the long-term position of domestic financial industry. Therefore, the Savings Banks must take the growth strategy for their survival, and it is an inescapable choice. Several options are available: big scale operation and diversification of business functions, reinforcement of local-focused mediating function of funds, establishment of strategic alliance with other financial firms, reinforcement of risk management system and core competence, nourishment and employment of professional manpower, and active deregulation and policy support. When the Savings Banks are refurbished as an independent local bank performing the central role of local finance, the bright future can be their destiny under the enormously changing global financial environment. Also, two more conditions need to be satisfied: to establish horizontal networks among local banks directed by cooperative Korea Federation of Savings Banks to reverse the weak scale position, and to satisfy their own peculiar niche market with internal countermeasure to face global financial networks.

• Journal of Korea Trade
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• 제24권6호
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• pp.82-100
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• 2020

Purpose - This paper attempts to compare five free trade agreements with gender chapters ratified by Chile and Canada and derives lessons for Korea in terms of gender-aware trade policy. While Chile and Canada have three and two FTAs with gender chapter respectively, Korea has none so far, although it has already ratified an FTA with the two countries. Design/methodology - This study first investigates all the gender-provisions with the gender chapters, conducts a comparative analysis on the five chapters as well as a case study of one target FTA's implementation and achievements, and finally suggests policy implications for Korea's trade administration as well as trade-related agencies. Findings - According to the analysis, there are three phases in terms of advancement in gender-related trade policy. As Chile is in phase two and Canada is in phase three, Korea remains in phase one. It has a ministry related to gender within the government, but not within the OMT. It has statistics on female business, but not of women traders. It has a few gender-related provisions in its FTAs, but not a gender chapter. In this sense, new mandates related to gender-aware trade policy for OMT, KITA, and KOTRA should be provided to realize the concrete economic benefits resulting from empowering women traders and policies promoting them. Originality/value - Existing studies only focus on introducing gender-related international commitments and Korea's participation in them. This paper is the first attempt to compare actual gender chapters of five FTAs ratified by two countries with the most advanced gender chapters in the world. To gain benefits from the positive gender impact of trade agreements, negotiating and signing gender responsive FTA with future partners is one of the most efficient, as well as inclusive, trade policies urgently needed for Korea.

• The Journal of Asian Finance, Economics and Business
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• 제7권3호
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• pp.323-331
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• 2020

The study aims to assess the impact of foreign direct investment (FDI) and international trade (export and import) on Vietnam's economic growth for the 2000-2018 period. Secondary data is taken from the General Statistics Office of Vietnam. Ordinary least-square method is used in analyzing the impact of FDI, export and import on economic growth of Vietnam. Empirical test results show that FDI and international trade are related to Vietnam's economic growth. However, each economic variable has a different impact. FDI has a positive and statistically significant influence on economic growth of Vietnam. Export also has positive and statistically significant impact to the economic growth, while import has a negative but not statistically significant effect. The result is useful for the policy makers of Vietnam on foreign economic relations. In order to improve the effect of FDI and international trade on growth of the economy, the government of Vietnam should: (1) continue applying preferential policies to attract FDI; (2) select foreign investors aiming to quality, efficiency, high technology and environmental protection; (3) continue pursuing export-oriented policy; (4) enhance the added value of exported goods and control the type of imported goods; (5) further liberalize trade through signing and implementation of international trade commitments.

• 무역상무연구
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• 제68권
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• pp.149-169
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• 2015

Recently, it's a trend that the third party outsourcing logistics will be increased a logistics flow from law material to final products. The government also works on promoting logistics company as securing the expertise for strengthen logistics industry and secure competitiveness. Nevertheless, logistics market have been divided by polarization between small logistics company and major company. Also a labor who work for logistics is being caused by worsened working conditions. That is one of results of the survey. Almost 50% of response are they have not been aware of FTA and have not known to need the FTA. Many respondents said that entering the overseas logistics or a new way like FTA will be difficult to take part in. Therefore I suggest several examples in this paper to encourage a vitalization of small logistics company through the multilateral FTA. Now our country needs to make an effort to maximize connections between multilateral FTA and policy effect by signing FTA with many countries and extending Economic territory. This effect can completely cope with the improvement of economic interests, establishing regional integration strategy and change of global supply chain. Therefore, a small business logistics have to make their competitiveness & a new dealing market in the future.

• Journal of Advanced Marine Engineering and Technology
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• 제40권9호
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• pp.859-867
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• 2016

선박연료유는 운항비의 높은 비율을 차지하는 필수적인 요소이다. 그러므로 기준에 적합한 적정량의 연료유를 수급 받는 것은 운항손실을 예방하기 위해서도 중요한 작업이라 할 수 있다. 하지만 연료유 수급 시 발생되는 분쟁은 연료유 공급항을 중심으로 매년 지속적으로 발생되고 있으며, 선박소유자는 이러한 분쟁을 예방하고 효과적으로 대응하기 위하여 검정업체와의 계약을 통해 독립적 제3자인 선박연료유 검정인을 연료유 수급과정에 참여시켜 사실관계에 대한 증명서 발급을 요청한다. 하지만 현재 연료유 수급분쟁 발생 시 선박연료유 검정원의 지위와 역할이 명확하지 않아 효과적으로 대응하지 못하고 있다. 따라서 이 논문에서 과연 선박연료유 검정인이 가지는 법적지위 및 책임을 규명해보고 선박연료유 검정인이 수급분쟁에 있어서 실질적인 역할을 할 수 있는 대책에 대하여 논하고자 한다.

• 우주기술과 응용
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• 제2권3호
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• pp.195-205
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• 2022

우주탐사는 지구관측, 통신, 항법 등 어떠한 우주활동보다 국제공조가 활발히 일어나는 분야이다. 이는 지구 근처에서의 우주활동보다 심우주 탐사를 위해 갖추어야 하는 발사체, 관제, 통신, 유인 우주거주시설 등의 인프라를 한 나라가 온전히 갖추기 위해서는 막대한 예산을 필요로 하며, 지속가능하지 않기 때문이다. 우리나라는 2021년 아르테미스 약정에 서명하고, 2022년 다누리 달 궤도선을 발사함으로써 인류의 심우주 탐사 대장정에 본격적으로 동참하려는 의지를 표명하였다. 심우주 탐사의 시작은 우리나라의 우주활동이 이제 기술개발에만 매진하는 단계를 지나 다른 나라와 동행하기 위해 필요한 규범을 정하고 노출되는 문제해결을 위해 외교적으로 공조해야 하는 단계로 확장되었음을 의미한다. 본 논문은 가장 활발히 아르테미스 프로그램에 참여하고 있으며, 우주 분야에서 외교력을 십분 발휘하고 있는 유럽의 우주정책과 우주탐사를 과학기술외교 관점에서 분석하였다. 유럽의 우주정책, 우주탐사전략, 우주탐사 프로그램으로 연계되는 상위 정책과 하위 프로젝트 단위에 이르는 우주활동에서 국제협력 전략의 전개를 살펴봄으로써 과학기술외교 관점에서 우리나라 우주탐사전략에 대한 시사점을 제시하였다.

• 한국도서관정보학회지
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• 제47권4호
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• pp.443-464
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• 2016

세계의 많은 기관들은 학술 정보 유통을 위해 디지털 리포지터리들을 구축해왔다. 동시에 디지털 리포지터리들은 증가하는 디지털 자원을 어떻게 장기적으로 보존하고 지속가능한 정보 환경 구축할 것인가의 문제에 직면해 있다. 하티트러스트(HathiTrust) 파트너십은 미국 연구도서관들의 디지털 리포지터리의 지속가능한 협력 모델의 필요성에 의해 시작하여 전 세계의 리포지터리들과의 체결을 통해 점차 확장되고 있다. 이에 본 연구에서는 하티트러스트의 설립배경부터 구축, 운영 및 정책, 현황 및 이용 서비스에 이르는 전반적인 사례와 실질적인 운영 과정 등을 다루었고 또한 하티트러스트의 효과와 앞으로 기대되는 가능성 등을 파트너십 단위 기관의 시각에서 다루고자 하였다. 하티트러스트를 통해 파트너십 기관들은 효과적인 운영 비용, 디지털 콘텐츠의 공동 관리 및 장기 보존, 저작권 관리의 용이성, 접근성 확대 등의 특장점이 있으며, 향후에는 인쇄물의 공동보존서고 운영, 빅데이터 분석 토대 마련 등의 기회를 제공할 것으로 기대된다.