• Journal of the Korean Society of Visualization
• /
• v.19 no.3
• /
• pp.22-30
• /
• 2021

Ventilated cavity shapes by varying angle of attack of a circular cavitator were predicted based on Logvinovich's Independence Principle in order to verify the cavity shape prediction method. The prediction results were compared with model experiments conducted in the high-speed cavitation tunnel. In the prediction of the cavity centerline, the movement of the cavity centerline due to the effect of gravity and cavitator's angle of attack were well predicted. In the prediction of the cavity contour, it was found that the cavity edge prediction error increased as the angle of attack increased. The error of the upper cavity contour was small at the positive angle of attack, and the error of the lower cavity contour was small at the negative angle of attack.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
• /
• v.29
• /
• pp.3-37
• /
• 2006

This writing is for the purpose of investigating the specific character and problem point of China arbitration system which has near 90 years history and overviewing the drift of system improvement which happens recently. The arbitration system of China which traditionally does not acknowledge ad hoc arbitration, unlike most of the other nations that employ The UNCITRAL model law and make it their own legislation, is restrictive to the parties concerned principle of private autonomy considerably. Also the independence of arbitration is delicate, because of a civil characteristic weakness of the arbitral institutions and the intervention of the courts on the arbitration procedure and award. The dual system of domestic and international arbitration which maintains after enforcement of 1994 arbitration law is often to be a primary factor interrupting the development of Chinese arbitration system and making it vulnerable to challenges. The system improvement demand of the recent time reflects this point and makes the arbitration system of China to a international standard rather than now, so it is a desirable direction for China to be as the member of the world economy to be globalization.

• Proceedings of the KIEE Conference
• /
• 2000.07b
• /
• pp.1168-1170
• /
• 2000

A half bridge time sharing type high frequency resonant inverter to give VVVF function in the inverter used as power source of induction heating at high frequency is presented in this paper, this paper also realize the output control of independence irrespective of the switching frequency using Phase-Shift. The analysis of the proposed circuit is generally described by using the normalized parameters. Also, the principle of basic operation and the its characteristics are estimated by the parameters, such as switching frequency, the variation of phase angle(${\varphi}$) of Phase-Shift. It is certain that the proposed circuit will be used and expanded in the high frequency power supplies like induction heating systems.

• Proceedings of the KIEE Conference
• /
• 1989.11a
• /
• pp.291-295
• /
• 1989

The conventional Optimized Injection Method is a good control technique but can't be applied to 3-phase a.e. line. In this paper, a new technique, Time-sharing Method based on basic principle of conventional Optimized Injection Method is introduced to hold the independence of each phase, and the structure of power circuit is improved to realize the new control method. By this scheme it is possible to simplify the control circuit and power circuit. The characteristic of the new control method are investigated and compared with conventional Optimized Injection Method by computer simulation.

• The Transactions of The Korean Institute of Electrical Engineers
• /
• v.60 no.4
• /
• pp.746-752
• /
• 2011

In this paper, a novel bearingless switched reluctance motor (BLSRM) with double stator is proposed. This motor has two stators. Torque stator is outside, which mainly produces rotational torque. Radial force stator is inside, which mainly generates radial force to suspend the rotor. A novel structure and operating principle are presented. And characteristics of the proposed structure such as magnetic flux distribution, inductance, torque and radial force are analyzed through finite element method. From the analysis, the proposed BLSRM has linear characteristic of radial force and independence from torque current.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2004.10a
• /
• pp.82-86
• /
• 2004

To cope with the challenge from global market characterized by frequent changes in requirements, manufacturing enterprise should be able to promptly adjust its manufacturing system accordingly. Therefore, it is important to provide manufacturing system designer with an appropriate methodology to (re-)design a manufacturing system subject to requirements change. Axiomatic design theory focuses design activity mainly on functional consideration rather than physical, and has been known as effective especially in the conceptual design phase. This paper introduces an approach to apply the axiomatic design principle to manufacturing system design. It is shown that a new design solution can be reached quickly by finding design parameters for the added or revised functional requirements and thus achieving a set of functional requirements as well as design parameters that satisfy the independence axiom. Some illustrative examples are also given.

• The Korean Journal of Applied Statistics
• /
• v.32 no.5
• /
• pp.763-782
• /
• 2019

This paper proposes a probabilistic document ranking model incorporating term dependencies. Document ranking is a fundamental information retrieval task. The task is to sort documents in a collection according to the relevance to the user query (Qin et al., Information Retrieval Journal, 13, 346-374, 2010). A probabilistic model is a model for computing the conditional probability of the relevance of each document given query. Most of the widely used models assume the term independence because it is challenging to compute the joint probabilities of multiple terms. Words in natural language texts are obviously highly correlated. In this paper, we assume a multinomial distribution model to calculate the relevance probability of a document by considering the dependency structure of words, and propose an information retrieval model to rank a document by estimating the probability with the maximum entropy method. The results of the ranking simulation experiment in various multinomial situations show better retrieval results than a model that assumes the independence of words. The results of document ranking experiments using real-world datasets LETOR OHSUMED also show better retrieval results.

• The Journal of the Korea Contents Association
• /
• v.20 no.9
• /
• pp.238-248
• /
• 2020

This study examines the feelings of positivity and negativity generated through upward social comparison and explores the impact of the results of the emotions on SNS users' posting behavior. In particular, this study aims to systematically identify the influence of upward social comparison on SNS followers and uploaders' SNS usage behavior and the structural principle of social network circulation in which followers become uploaders again. According to the analysis, interaction-oriented followers made negative upward social comparison and positive upward social comparison, while negative upward social comparison reduced the publication of independence tendency. However, positive upward social comparison has been shown to increase both independent and interactive postings. The results of this study are meaningful in that SNS has expanded the results of prior studies, in which social comparison theories were biased toward negative upward comparisons, to positive upward comparisons. In addition, this study suggested a practical strategy for SNS platform operators on how SNS users would not deviate from other platforms.

• Journal of National Security and Military Science
• /
• s.3
• /
• pp.121-167
• /
• 2005

The great strategy of China has been changing depending on the time, change of surrounding environment and personality of leaders of the time. However, the process of the change was not the drastic change but has maintained the consistency through the course of modification and development. The great strategy of Mao Ze-dong was to have the objective in 'World Great Nation' with the facilitation of the 'Surpass Strategy' and 'Autonomy, Independence and Alliance strategy' to successfully build up the political great nation, but he entrapped China's politics and economy into the point of no return by excessive war preparation under 'The Principle of Inevitable World War', striving of rapid communism and other policies. The Deng Xiao-ping era also targeted for ‘World Great Nation’ but, unlike Mao Ze-dong, he had the foundation in the 'The Principle of Evitable World War' and undertook the ‘Peace and Development Strategy’ and ‘Peaceful Coexistence' to build up the advantageous surrounding environment for China to focus on the economic construction as the core of the nation by establishing ‘The Reform and Opening Strategy’ and 'Three-step Development Strategy‘ to have the successful soft landing of the Chinese economy with the astonishing economic development. The system of leader's group of China after Deng Xiao-ping succeeded the practical and realistic spirit of Deng Xia-ping, and based on the drastically grown economic strength, the great strategy of China is on the ‘The Great Reinvigoration of Chinese Nation’. This is one step further from the strategy of 'World Great Nation' of the past that it embraces all the minority races in China, Chinese economic sphere, foreign citizens of Chinese origin as well as Chinese residing abroad. China contemplates the time of making 'The Great Reinvigoration of Chinese Nation’ in 2050, 100 anniversary of the birth of new China.

• Journal of Arbitration Studies
• /
• v.14 no.1
• /
• pp.29-60
• /
• 2004

Recently stand-by credits are using as surety devices in various global business transactions including sale of goods. Stand-by credits have lots of merits but simultaneously have high possibility of improper demand by the beneficiary due to the characteristics of the documents required. So so-called fraud rule has developed as a solution to the improper demand in letter of credit transactions. And the actual way of the fraud rule is the injunction by the competent court. The purpose of this article is to examine the applicability of the injunction in stand-by credit transactions by means of case studies. For this purpose, the author examined the concept of the injunction, necessity of the injunction in stand-by credit transactions and the cases of injunction granted and injunction denied. Firstly, the courts have legal standard of the application of injunction due to the legislation of the relative articles in the United Nations Convention on Independent Guarantees and Stand-by Letters of Credit and the Uniform Commercial Code. Secondly, the courts have taken a negative attitude granting injunction in order to observe the independence principle. Thirdly, the courts have a tendency to grant injunction when the demand has no conceivable basis and the applicant will suffer irreparable injury without injunction. Finally, like the saying 'prevention is the best cure', the applicant always pays attention with reasonable care before improper demand by the beneficiary.