• 제목/요약/키워드: international transaction

검색결과 614건 처리시간 0.028초

Magnet Design using Topology Optimization

  • Jenam Kang;Park, Seungkyu;Semyung Wang
    • KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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    • 제3B권2호
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    • pp.79-83
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    • 2003
  • The topology optimization for the magnet design is studied. The magnet design in the C-core actuator is investigated by using the derived topology optimization algorithm and finite element method. The design sensitivity equation for the topology optimization is derived using the adjoint variable method and the continuum approach.

Periodic Properties of a Lyapunov Functional of State Delay Systems

  • Young Soo Suh
    • KIEE International Transaction on Systems and Control
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    • 제2D권2호
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    • pp.92-96
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    • 2002
  • This paper is concerned with properties of a Lyapunov functional of state delay systems. It is shown that if a state delay system has a pure imaginary pole for some state delay, then no Lyapunov functional satisfying a Lyapunov condition exists periodically with respect to change of the state delay. This periodic property is unique in state delay systems and has been well known in the frequency domain stability conditions. However, in the time domain stability conditions using a Lyapunov functional, the periodic property is not known explicitly.

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On Delay-Dependent Stability of Neutral Systems with Mixed Time-Varying Delay Arguments

  • Park, H.J.
    • KIEE International Transaction on Systems and Control
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    • 제12D권1호
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    • pp.39-42
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    • 2002
  • This paper focuses on the asymptotic stability of a class of neutral linear systems with mixed time-varying delay arguments. Using the Lyapunov method, a delay-dependent stability criterion to guarantee the asymptotic stability for the systems is derived in terms of linear matrix inequalities (LMIs). The LMIs can be easily solved by various convex optimization algorithms. Two numerical examples are given to illustrate the proposed methods.

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Single-Chip Microprocessor Control for Switched Reluctance Motor Drive

  • Hao Chen;Ahn, Jin-Woo
    • KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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    • 제2B권4호
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    • pp.207-213
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    • 2002
  • The paper introduces a switched reluctance motor drive system based on an 80C31 and an Intel 80C 196KB single-chip microprocessor control. Advance schemes are used in turn-on and turn-off angles with the power converter's main switches during traction and regenerative braking. The principles of traction speed control and braking torque control are given. The hardware and software patterns in the 80c31 and the Intel 80C196KB single-chip microprocessor control system are also presented.

Modeling Strategies of Cheju-Haenam HVDC System and Its Dyanmec Performance Study

  • Jung, Gil-Jo;Kim, Chan-Ki;Yang, Byeong-Mo;Kwak, Hee-Ro
    • KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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    • 제11B권2호
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    • pp.40-50
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    • 2001
  • This paper deals with the development of the simulation models Cheju - Haenam HVDC system and its dynamic performance study and verify the control characteristics of the HVDC system. It discusses the model development requirement and criteria. It provides guedelines for developing large-scale simulation models for detailed electromagnetic studies and presents the results of the modeling project.

A Conceptual Model of a B2B Food Distribution Platform Based on Blockchain Consensus Mechanism

  • Jung, Hojin
    • International Journal of Contents
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    • 제17권3호
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    • pp.48-66
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    • 2021
  • We proposed a B2B food distribution platform by transforming an established food distribution and management platform based on blockchain technology. Our proposed model introduced a method to bring innovation into the domestic B2B food distribution market and systematically manage and utilize massive data (country of origin, producer, transaction, distributor, final consumer) generated within the food distribution process.

Voltage Source FEA for Hysteresis Motor using Preisach Model

  • Hong, Sun-Ki;Lee, Seok-Hee;Jung, Hyun-Kyo
    • KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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    • 제11B권4호
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    • pp.164-168
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    • 2001
  • In this paper voltage source FEA for hysteresis motor considering magnetic hysteresis characteristics is presented. The Preisach model is used as a hysteresis model. System matrix whose unknown variables are vector potentials and currents is formulated for voltage source. The stiffness matrix is maintained constant by using M-iteration method. Therefore the calculation time and efforts are reduced with Choleski direct method. Current waveform can be calculated for arbitrary voltage vaveform considering hysteresis effects.

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국제상사중재에서 UNIDROIT 원칙의 적용가능성에 관한 연구 (The Applicability of the UNIDROIT Principles as the "Lex Mercatoria" in International Commercial Arbitration)

  • 이대진;유병욱;오현석
    • 무역상무연구
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    • 제21권
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    • pp.129-151
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    • 2003
  • Nowadays even if environment of international commercial transaction is changing quickly municipal law could not meet with such change accordingly. So far, however, efforts towards unification have prevailingly taken the form of binding instruments, such as non-national or supranational legislation, international conventions or international model laws. Among them, the UNIDROIT Principles with parties' autonomous and yet non-binding character do not only meet the substantive requirements of a true law merchant. In addition they also counter some of the main points of criticism against the modern lex mercatoria. As such the Principles constitute a cornerstone in the lex mercatoria debate and may become the heart of the new lex mercatoria. The purpose of this article is to ask whether there could be applied the Principles in international commerce. For the purpose it is to investigate when the Principles are applied in international commerce and how effectively the Principles are applied for the decision in international commercial disputes. Even though the Principles are used for reference by parties involved for the voluntary regulation of their contract, it is sufficiently expected that the Principles are to be a stepstone of uniform contract law in international commerce. Until now cases of appling the Principles are not satisfied with its expectation as a source of non-legislative means of unification or harmonization of law. Given the party's autonomy in the contract, this is among other things because business parties are strongly tend to observe their national laws in their international commerce. And also, even though there are a number of neutral and uniform regulations for international commercial contracts, parties do not often recognize their usefulness with being up to expectation. In order to explore the applicability of the Principles a number of cases of ICC International Court of Arbitration and others are quoted.

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싱가포르 국제중재제도에 관한 연구 (A Study on the International Arbitration System of Singapore)

  • 김상천;김유정
    • 한국중재학회지:중재연구
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    • 제24권2호
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    • pp.137-160
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    • 2014
  • These days, in line with the increase of opportunities in our country's firms to do transaction, large-scale M&A and investment with foreign firms incorporating arbitration clauses in the contracts have become general practice. Recently, Singapore has come to the fore as a place of arbitration and, particularly, Singapore International Arbitration Center (SIAC) was assessed as the favored international arbitration institution uniquely in Asia at the 2010 International Arbitration Survey: Choices in International Arbitration, along with the ICC, LCIA, and AAA/ICDR. Therefore, the country's firms need to understand properly the international arbitration procedure of Singapore. This study examines the international arbitration system of Singapore, focusing on the arbitration procedure of the SIAC. The Center revised arbitration rules twice in 2010 and 2013, and established the Court of Arbitration of SIAC in April 2013 for the first time in Asia in pursuit of stricter neutrality and promptness. It further seeks to run the arbitration procedure fairly by selecting a third country's people as an arbitrator, while its arbitration expenses are cheaper than those of the ICC. The study believes that for the country's international arbitration institutions such as the KCAB to jump forward as a world-class international arbitration institution, the Korean government should render positive support to them, learning from Singapore which does not spare any political and financial assistance to cultivate international arbitration institutions. On the other hand, KCAB should also try hard to improve in the aspects of neutrality, fairness, and promptness and to be selected as a trustworthy international arbitration institution by firms in Asian countries.

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국제적(國際的) 보증(保證)의 제문제(諸問題) (Various Issues on International Guarantee)

  • 석광현
    • 무역상무연구
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    • 제17권
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    • pp.7-35
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    • 2002
  • In many international financing transactions Korean companies are required to issue a guarantee. Thus far, however, legal issues on international guarantees have not been fully discussed in Korea. This is partly because most of the international guarantees are governed by a foreign law such as English law or the laws of the State of New York. In this articles the author examines major concepts or terms and conditions of a typical international guarantee, e.g., language on consideration, primary obligor, joint and several guarantee, unconditional and irrevocable guarantee, continuing guarantee, right of subrogation, representations and warranties, covenant or undertaking, currency indemnity, assignment, participation, governing law and jurisdiction clause, etc. For reference, standard forms of a guarantee and a standby letter of credit are attached to the article. In examining the terms and conditions, the author compares them with similar or equivalent concepts under Korean law. The author further discusses some Korean law issues that may arise under international guarantees governed by a foreign law. These issues include the application of the ultra vires doctrine under Article 34 of the Civil Code of Korea, the validity of an international guarantee which a Korean company has issued in violation of the guarantee ceiling set under Article 10 of the Law on Monopoly Regulation and Fair Trade of Korea and the validity of an international guarantee which a Korean party has issued in violation of the Foreign Exchange Transaction Law. In addition, the author discusses some issues under a so-called independent guarantee and a standby letter of credit. In this regard, reference is made to the Uniform Rules for Demand Guarantee (URDG), International Standby Practices (ISP98) and the Convention on Independent Guarantees and Stand-by Letters of Credit adopted by the United Nations in 1995. Finally, the author examines major terms and conditions of typical comfort letters and discusses some legal issues, such as the binding force of the comfort letter. In dealing with the issues the author underscores that to the extent the issues are not properly dealt with by an international norm such as Uniform Customs and Practice for Documentary Credits or ISP 98, the issues must be analyzed by reference to the governing law of the relevant instrument.

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