• 제목/요약/키워드: A first principles study

검색결과 819건 처리시간 0.028초

Electro-elastic analysis of functionally graded piezoelectric variable thickness rotating disk under thermal environment

  • Arefi, Mohammad;Moghaddam, Sina Kiani
    • Structural Engineering and Mechanics
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    • 제71권1호
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    • pp.23-35
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    • 2019
  • In this study we derive the governing equations of a functionally graded piezoelectric disk, subjected to thermo-electro-mechanical loads. First order shear deformation theory is used for description of displacement field. Principles of minimum potential energy is used to derive governing equations in terms of components of the displacement field and the electric potential. The governing equations are derived for a disk with variable thickness. The numerical results are presented in terms of important parameters of the problem such as profile of variable thickness, in-homogeneous index and other related parameters.

국제지적재산분쟁의 중재 (Arbitration of International Intellectual Property Disputes)

  • 손경한
    • 한국중재학회지:중재연구
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    • 제17권2호
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    • pp.71-100
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    • 2007
  • To promote the way of resolving the increasing disputes regarding international intellectual property by arbitration, we should overcome uncertainty thwarting the dispute resolution; i.e., whether a dispute regarding intellectual property would be an arbitrable subject, whether the arbitration agreement would be valid and enforceable, and whether the arbitral award could be recognized and enforced in a foreign country. This article is intended to seek how to promote and facilitate the resolution of international disputes regarding intellectual property by arbitration. This article in Chapter II will examine the characteristics of the IP disputes first. Chapter III of this article will study arbitrability of IP disputes. Then, Chapter IV will discuss the requirements, validity, and effectiveness of arbitration agreement of international IP disputes. The author will discuss the procedure of arbitration of the international IP disputes in Chapter V, and finally the recognition and enforcement of foreign arbitral awards thereon in Chapter VI. Due to the so called 'territoriality principle' in intellectual property, the international disputes thereof confront numerous procedural setback, e.g., jurisdiction, conflict of laws, the recognition and enforcement of foreign judgments or awards. To overcome such setbacks, I propose resolution of international IP disputes by one-step arbitration procedure through widely recognizing the arbitrability of IP disputes, and utilizing unnational nature of arbitration. In addition, I propose to set up the principles as to arbitration of the international IP disputes as the American Law Institute has formulated the principles for International Intellectual Property Litigations. By setting up these principles, I am certain it will be helpful to just and prompt resolution of international IP disputes which occur more frequently these days.

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"과학교육론" 과목의 교수모형과 교재개발연구 (An Instructional Planning and Reading Material Development for the "Foundation of Science Education" Course)

  • 박승재
    • 한국과학교육학회지
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    • 제4권1호
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    • pp.44-56
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    • 1984
  • There haw been some courses related to science education for the graduate students, but almost the study for no instructional model and reading material development haw been pursunded in Korea. This study intended to discuss the discipline character of science education research for the systematic survey of concepts, principles and theories related to science education as the first put task, and designed an instructional model of the introductory survey course of science education at graduate level, and then proposed a developmental plan of a reading material for the course teaching aid. The main work of the study was to survey the foreign literature, but the subjective analysis of researcher's courses work during graduate study in abroard and some courses offered to undergraduate and graduate students in Korea by this researcher was quite helpful, even though which was not a strictly designed experimental research. Later it was found that this kind of study was not fitted to the traditional research style but worth while to try for the research in and teaching of "science education" as an area of discipline and professional activity.

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신용장(信用狀) 거래(去來)에 있어 신의성실(信義誠實) 원칙(原則)의 적용(適用)에 관한 고찰(考察) (A Study on the Application of Principle of Good Faith in L/C Base Transaction)

  • 신군재;김경배
    • 무역상무연구
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    • 제22권
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    • pp.173-197
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    • 2004
  • Letter of Credit between buyer and seller in International Trade Transaction is the means of payment which makes International Trade operate smoothly by guaranteeing an exporter against non-payment and an importer against non-delivery. Therefore, the parties to a sale apply UCP500 established by the International Chamber of Commerce, in accordance with principle of the freedom of contract among the parties concerned, to look to their own legal stability. However, we may recognize some cases to have been applied principle of faith and trust, one of the dominant principles of the civil law, by the Korean Supreme Court and other cases to have not been applied that principle by the Korean Supreme Court. The Court shall apply UCP500 strictly as long as the parties concerned adopt UCP500 in view of the legal stability. In other words, in case that the Court applies principle of faith and trust to the case related to L/C, this rule - principle of faith and trust - should apply to the subject matter which have not stipulated in UCP500 under certain restriction. We suggest keeping in mind points to korean companies as follows; First, the parties to a sale shall understand L/C basis transaction and principles related to L/C deeply. Second, the exporter shall prepare documents in compliance with L/C and fulfil his or her obligation according to UCP500 and L/C related to the contract. Third, as buyer or importer, when he or she receive the shipping documents with discrepancies from the notifying bank, he or she makes him or herself clear to all the parties concerned. Fourth, as bank, she shall examine all the documents according to UCP500 and L/C related to the contract, and if any document with discrepancies, the bank, by all means, shall approach applicant first, and then decide whether to pay the credit amount to beneficiary or not to.

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다성분계 물성을 예측하기 위한 BaTiO3기반 계산과학 플랫폼 구축 (Establishment of a BaTiO3-based Computational Science Platform to Predict Multi-component Properties)

  • 이동건;이한욱;임원빈;고현석;조성범
    • 센서학회지
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    • 제31권5호
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    • pp.318-323
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    • 2022
  • Barium titanate (BaTiO3) is considered to be a beneficial ceramic material for multilayer ceramic capacitor (MLCC) applications because of its high dielectric constant and low dielectric loss. Numerous attempts have been made to improve the physical properties of BaTiO3 in response to recent market trends by employing multicomponent alloying strategies. However, owing to its significant number of atomic combinations and unpredictable physical properties, finding a traditional experimental approach to develop multicomponent systems is difficult; the development of such systems is also time-consuming. In this study, 168 new structures were fabricated using special quasi-random structures (SQSs) of Ba1-xCaxTi1-yZryO3, and 1680 physical properties were extracted from first-principles calculations. In addition, we built an integrated database to manage the computational results, and will provide big data solutions by performing data analysis combined with AI modeling. We believe that our research will enable the global materials market to realize digital transformation through datalization and intelligence of the material development process.

이제마의 감정조절법의 기본 개념들에 대한 고찰- 성정(性情), 중화(中和), 지인(知人)을 중심으로 - (A Study on the Basic Concepts of Lee Jema's Emotion Control Method - Focusing on nature-temperament(性情), Junghwa(中和), Jiin(知人) -)

  • 辛相元
    • 대한한의학원전학회지
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    • 제36권2호
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    • pp.1-22
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    • 2023
  • Objectives : In order to understand and apply Lee Jema's emotion control method, the basic concepts of his nature-temperament theory was examined. Lee's thoughts on emotion control, and the basic principles of his method were deduced from this process. Methods : The meaning and set-up of basic concepts in his nature-temperament theory as written in text such as the Donguisusebowon, Gyeokchigo, and Donguisusebowon Sasang Chobongwon were examined, and compared with similar concepts of Confucianism. Results & Conclusions : Out of concepts set by Lee, the Ae(哀)-No(怒)-Hui(喜)-Rak(樂) nature-temperament is the condition for emotion control. Junghwa(中和) is the aim of emotion control according to different stages of emotional expression, and Jiin(知人) is the precondition for emotion control. Lee's basic principles of emotion control could be summarized as following. First, it must be done with the aim for 'Goodness[善]' to be manifested. Second, it must be based on clear understanding of 'Insa(人事)'. Lastly, Hoyeonjigi(浩然之氣) and Hoyeonjiri(浩然之理) must be consistently cultivated for stable emotion control.

신편제종교장총록의 저록에 관한 연구 (A study on the entry of [Sinpyon-jejong-kyojang-chonglok])

  • 김성수
    • 한국도서관정보학회지
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    • 제26권
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    • pp.1-22
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    • 1997
  • [Sinpyon-jejong-kyojang-chonglok] is a bibliography and subject catalog, called [Sokjangkyoung-catalog], which was introduced in Coryo dynasty. It was developed by [Degakguksa Yuichun] in 11th century(1090) and holds an important feature in Korean cataloging history as well as in the world cataloging history as the first [Sokjangkyoung-catalog]. This study investigates the entry description of [Kyojang-chonglok] and analyzes it in the contemporary perspective of Cataloging Rules. The study has found that the [Kyojang-chonglok] Follows the 'title main entry method'. Since the modern a n.0, pproach a n.0, pplies direct method which utilizes title, rather than indirect method which utilizes author name, we could safely assume that [Kyojang-chonglok] follows the modern principles such as standardization of cataloging and unification of bibliographical description. We could also extend our findings to conclude that [Sinpyon-jejong-kyojang-chonglok] created a foundation for modern 'title main entry system' such as ISBD and KCR3. Also, the bibliographical description of [Kyojang-chonglok] meets the conditions of B. S. Wyner, shown in the below. 1) logicality 2) flexibility 3) quickness 4) compactness 5) economic

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"회삼경(會三經)"의 육대성상(六大成象)을 중심(中心)으로 한 한의학적(韓醫學的) 연구(硏究) (A Study of the Traditional Korean Medicine Focusing on Yookdaesungsang(六大成象) in "Hoesamgyeong(會三經)")

  • 오정호;반창열;박황진;이상남
    • 혜화의학회지
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    • 제23권1호
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    • pp.57-69
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    • 2014
  • This study is based on "Hoesamgyeong(會三經)", the interpretation of the Lecture on Truth of "Samilshingo(三一神誥:Korea's national scripture)". And the goal of this study is to arrange theoretical system of Korean traditional qigong training by doing research on the principles of qigong that are contained in Yookdaesungsang(六大成象) on the basis of Traditional Korean Medicine. Yookdaesungsang(六大成象) is the ideas that appeared for the first time in "Hoesamgyeong(會三經)". Yookdaesungsang(六大成象) refers to Kong(空), Yol(熱), Jin(震), Seup(濕), Han(寒) and Ko(固), which mean six elements of nature. And they correspond with Sung(性), Myoung(命), Jung(精), Sim(心), Ki(氣) and Shin(身) respectively, which are fundamental components of human beings according to the Lecture on Truth of "Samilshingo(三一神誥)". This has a thread of connection with the ideas of 'the unity of nature and human beings(天人合一)' or 'the correspondence between nature and human beings(天人相應)' in Traditional Korean Medicine. From the standpoint of modern science, what are more tangible such as Seup(濕), Han(寒), and Ko(固) are considered as changes in states of matter by activities, while what are relatively intangible such as Kong(空), Yol(熱), and Jin(震) are regarded as wave energy. And in the ideas of three yin(三陰) and three yang(三陽), on which the meridian system of Traditional Korean Medicine is based, Taeyang(太陽)-Soeum(少陰), Yangmyung(陽明)-Taeeum(太陰), and Soyang(少陽)-Gweoleum(厥陰) are respectively ins and outs of the human body and they keep the balance between yin and yang such as cold(寒)-hot(熱), dry(燥)-wet(濕), and slow(緩)-fast(急). As these cold(寒)-hot(熱), dry(燥)-wet(濕), and slow(緩)-fast(急) correspond with Han(寒)-Yol(熱), Jin(震)-Seup(濕), and Kong(空)-Ko(固), the correlation between Yookdaesungsang(六大成象) and the meridian system can be ascertained. As mentioned above, the principles of Qigong in "Hoesamgyeong(會三經)" are based on traditional ideas and accord closely with the principles of Traditional Korean Medicine. Therefore, further researches on the correlations between principles of Qigong unique to Korean tradition and Traditional Korean Medicine are required.

지역아동센터 실내공간의 물리적 환경 특성 사례연구 - 광주광역시 사례를 중심으로 - (A Case Study on the Physical Environment Characteristics in Interior Space of Community Child Center - Focused on the Cases in Gwang-ju -)

  • 김미영;문정민
    • 한국주거학회논문집
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    • 제25권6호
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    • pp.93-100
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    • 2014
  • Community child center is the facility of the highest number of children in child welfare facilities. But plan for the physical environment is not considered importantly because of insufficient finance. However impact of the physical environment in growing children is very closely related in terms of the emotional as well as a functional perspective. Therefore, it is necessary to understand current physical environment and to seek to find alternative methods that can be resolved space matters. As a basic study for this, in the present study we compare and integrate the design principles of child care facility guidelines. And we set up a framework of analysis to derive the design principles that are required in the target area. It is possible to analyze the environmental characteristics of community child center located in Gwang-ju from this framework, to obtain the flowing results. First, draw items are formation of inner direction, provide of environmental supportability, flexibility of use, healthy space. It can be understood that the emotional aspects and physical aspects should be considered comprehensively. Second, as a result of the case analysis, planning elements consideration of the functional aspects appeared high fulfillment rate generally. Planning elements of low fill rate ascertain result from the process take advantage of the narrow space and it was possible to ascertain the study for flexible utilization of space is not. As a result, in order to improve the problems of the target space, increasing the functionality is necessary and also requires consideration of sensitivity of the user's face.

피복구성학적 인체계측방법에 관한 연구 - 평면사진계측방법을 중심으로 - (A Study on the Plan Photogrammetry for Clothing Design)

  • 박찬미;서미아
    • 복식문화연구
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    • 제5권1호
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    • pp.151-164
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    • 1997
  • This study pursues the problems of plan photogrammetry which is widely used in somatotyping at present, and find out a method which can improve accuracy of measurement on the basis of principles and mechanisms of photography-the basic foundation of the photographic analysis methods. As a result, this study proposes a new method which is based on the reference point method and perspective coordinate system. And the test measurement was operated to compare the measurement accuracy of the proposed method and the method based on reference grid screen method and perpendicular coordinate system which is commonly used at present. The result of this test measurement showed that the proposed method has higher accuracy. Two reasons can be pointed out for the improvement of measuring accuracy. The first reason is that the proposed perspective coordinate system reduces the perspective distortion of photography. And second reason is that measuring points can be closely placed to the scale and coordinate reference plan of measurement by the proposed reference point method which make possible to place measuring object (or person) at the center of scale and coordinate reference plan by utilizing reference points of measurement in the three dimensional space not on screen.

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