• KSII Transactions on Internet and Information Systems (TIIS)
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• 제13권7호
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• pp.3351-3368
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• 2019

The Internet of Things (IoT) enables machines and devices in a global network to connect and provide applications. The Vehicular Ad-hoc NETwork (VANET) allows vehicles in the network to communicate with each other as an application of the IoT. The safety and comfort of passengers can be improved through VANET related applications. In order to be able to provide related applications, there must be a reliable VANET topology. As a result of the Byzantine agreement (BA), fault tolerance can be solved in VANET. In order to improve the reliability of the system, even if some components in the system are damaged, a protocol is needed to assist the system to perform normally. Therefore, the BA problem in VANET with multiple impairments is revisited in this research. The proposed protocol allows all normal processing elements (PEs) to reach agreement using the least amount of information exchange. Moreover, the proposed protocol can tolerate the largest number of damaged PEs in VANET.

• Journal of Korea Trade
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• 제23권2호
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• pp.76-87
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• 2019

Purpose - This study empirically analyzes the effects of the European Union-South Korea Free Trade Agreement on Korean exports in major sectors. Design/Methodology - This study is based on the augmented gravity model with a panel data set covering 51 countries between the years 2000 and 2015. Findings - Main findings of the present study is that the agreement has affected the chemical sector the most. Fixed effects estimation predicted a positive trade effect of 38.3%, while Poisson maximum likelihood estimation predicted an impact of 4.75% in the chemical export sector. Regression results for the other sectors only show insignificant effects. Originality/value - The findings imply that the effects of the EU-South Korea free trade agreement on the Korean exports are quite specific compared to the European ones, meaning that the Korean government should focus on sector-specific programs to maximize the welfare benefits of the free trade agreement.

• 한국도서관정보학회지
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• 제55권2호
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• pp.267-291
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• 2024

전자정보 라이선스 계약의 새로운 방안으로 OA 전환계약이 제시된 이후 현재까지 OA 전환계약의 체결은 지속적으로 증가하는 한편, OA 전환계약의 특성상 계약서에 포함되어야 하는 내용이 광범위함에도 불구하고 관련 연구는 미비한 상황이다. 본 연구는 OA 전환계약서의 표준 모델 개발을 위한 기초 연구로, OA 전환계약의 현황을 조사하고 유형별 OA 전환계약서와 구독 계약서의 차이를 분석하였다. 이를 통해 세계적으로 OA 전환계약이 큰 폭으로 증가하는데 반해 OA 전환계약서의 공개는 보편화되지 못한 현황을 확인할 수 있었다. 또한 OA 전환계약서와 구독 계약서의 전반적인 구조는 유사하지만, 세부 조항에는 차이가 있다는 점을 밝혔으며 상이한 부분을 유형화하였다. OA 전환계약서에는 전환계약과 관련된 세부 조항이 신설되거나 기존 구독 계약서의 조항에 전환계약 관련 내용이 추가되어 있었으며 OA 전환계약과 무관하게 내용상 차이가 있는 조항도 확인되었다. 분석을 통해 계약 유형에 따라 계약서의 세부 조항이 상이하다는 사실을 확인하였으며, 이는 장기적으로 도서관 사서의 부담을 가중시킬 수 있으므로 OA 전환계약서의 표준화가 필수적임을 밝혔다. 본 연구는 OA 전환계약의 현황을 조사하고 계약 유형별 실제 계약서의 분석을 진행함으로써 표준계약서 개발의 기반을 제시했다는 점에서 의의가 있다.

• 한국중재학회지:중재연구
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• 제14권2호
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• pp.173-198
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• 2004

Recently in Korea, franchise system has been specially used in the distribution industry. However, it also brought up many problems caused by various issues between franchisor and franchisee. The purpose of this article is to review recent trend of the franchise transaction contracts and resolution of the disputes in Korea. And to expand to use of ADR(Alternative Dispute Resolution) system as a practical dispute settlement procedure including mediation and arbitration. Arbitration means a procedure to settle any dispute in private laws, not by the adjudication of a court, but by the award of an arbitrator or arbitrators, as agreed by the parties. Arbitration agreement is a prerequisite for either party to a dispute to commence arbitral proceeding and may be in the form of a separate agreement or in the form of an arbitration clause in a contract and shall be in writing.

• East Asian Economic Review
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• 제20권1호
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• pp.67-90
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• 2016

This paper provides an assessment of the potential economic impacts of the Vietnam-Korea free trade agreement on Vietnam, by using general equilibrium modeling. The results show that Vietnam-Korea FTA will increase aggregate welfare for both countries in the long run. The most important gains accrue from better allocation of resources consequent to trade liberalization. All the sectoral differences and changes are consistent with the trade profiles of the two countries, and the long-run results are more pronounced than those of the short-run. In comparison with other ASEAN countries, the CGE analysis suggests that Vietnam's agriculture exports to Korea would especially rise in the long run. However, there will be strong competition in this sector among ASEAN members. Thus, an earlier conclusion of a comprehensive FTA with Korea is expected to be a good strategy for Vietnam, so as to avoid the direct competition with ASEAN members in the future.

• Journal of Mechanical Science and Technology
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• 제14권3호
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• pp.261-271
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• 2000

In this paper the leakage prediction and rotordynamic analysis of an annular seal with a smooth rotor and circumferentially grooved stator are performed based on a three-controlvolume theory. The present analysis is validated by comparing with the experimental data of Iwatsubo and Sheng and theoretical results suggested by Marquette and Childs. For the leakage prediction the present analysis shows a good agreement with Marquette and Childs' result and a qualitation agreement with Iwatsubo and Shengs' experimental data. Direct and cross-coupled stiffness coefficients show closer agreement with the experimental values than those of Marquette and Childs. However, direct damping coefficient shows greater discrepancy from the experimental value than Marquette and Childs'.

• 해양환경안전학회지
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• 제5권2호
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• pp.125-139
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• 1999

Thanks to the fact that the 1953 Korea Armistice Agreement does not have any clear provisions on the sea demarcation line, the North Korea insists that the sea demarcation line in the Yellow Sea Area should not be the NLL designated by the Commander in Chief. UN Command, unilaterally, but the hypothetical extention of the Latitude Parallel from the end of the provincial boundary line between Whanghae-do and Kyongki-do In those unique situations at the end of the Korean War, the cease-fire line on the part of the western sea area, a logically indispensable element of the contents of an armistice agreement, however has formed and crystallized by the act of the UN Command designating the NLL. In implementing the South-North Korean Basic Relations Agreement, a fair and clear common consent on the sea demarcation line in the western sea area should be deliberated.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제3권2호
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• pp.178-194
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• 2009

Current group key agreement protocols(often tree-based) involve unnecessary delays because members with low-performance computer systems can join group key computation. These delays are caused by the computations needed to balance a key tree after membership changes. An alternate approach to group key generation that reduces delays is the dynamic prioritizing mechanism of filtering low performance members in group key generation. This paper presents an efficient tree-based group key agreement protocol and the results of its performance evaluation. The proposed approach to filtering of low performance members in group key generation is scalable and it requires less computational overhead than conventional tree-based protocols.

• 한국컴퓨터정보학회논문지
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• 제23권2호
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• pp.53-61
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• 2018

In this paper, the author proposes an efficient group key agreement scheme in a mobile environment where group members frequently join and leave. This protocol consists of basic protocols and general ones and is expected to be suitable for communications between a mobile device with limited computing capability and a key distributing center (or base station) with sufficient computing capability. Compared with other schemes, the performance of the proposed protocol is a bit more efficient in the aspects of the overall cost for both communication and computation where the computational efficiency of the scheme is achieved by using exclusive or operations and a one-way hash function. Also, in the aspect of security, it guarantees both forward and backward secrecy based on the computational Diffie-Hellman (CDH) assumption so that secure group communication can be made possible. Furthermore, the author proves its security against a passive adversary in the random oracle model.

• Wind and Structures
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• 제18권4호
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• pp.457-471
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• 2014

A summary of the main results from an international comparative study for the high-frequency base balance is given. Two buildings were specified - a 'basic' and an 'advanced' building. The latter had more complex dynamic response with coupled modes of vibration. The predicted base moments generally showed good agreement amongst the participating groups, but less good agreement was found for the roof accelerations which are dominated by the resonant response, and subject to measurement errors for the generalized force spectra, to varying mode shape correction techniques, and different methods used for combining acceleration components.