• Structural Engineering and Mechanics
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• 제46권3호
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• pp.417-431
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• 2013

This paper presents responses of the free end of a cantilever micro beam under the effect of an impact force based on the modified couple stress theory. The beam is excited by a transverse triangular force impulse modulated by a harmonic motion. The Kelvin-Voigt model for the material of the beam is used. The considered problem is investigated within the Bernoulli-Euler beam theory by using energy based finite element method. The system of equations of motion is derived by using Lagrange's equations. The obtained system of linear differential equations is reduced to a linear algebraic equation system and solved in the time domain by using Newmark average acceleration method. In the study, the difference of the modified couple stress theory and the classical beam theory is investigated for the wave propagation. A few of the obtained results are compared with the previously published results. The influences of the material length scale parameter on the wave propagation are investigated in detail. It is clearly seen from the results that the classical beam theory based on the modified couple stress theory must be used instead of the classical theory for small values of beam height.

• East Asian mathematical journal
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• 제21권2호
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• pp.249-260
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• 2005

Experimentation using computer plays an important part in education and research in graph theory. The purpose of this paper is to develop the CAS techniques for the hands-on approach in graph theory specifically on the topic of constructing the spanning tree. This paper discusses the advantages of CAS as the software system for doing graph theory and introduces the software solutions integrating multimedia user interface developed by the author, which extend the functionality of the existing CAS-based graph theory software package.

• 한국실내디자인학회논문집
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• 제26호
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• pp.64-71
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• 2001

After Industrial Revolution, new thought system is needed to subdue multi-chanties and complexities of society. Nowadays under 'system theory', these efforts are theorized and organized in fields of science, philosophy and others. From Industrial revolution, before establishing the system theory, system has been needed by the expression methods. From that time, as it could be done, standardization, has been continued. Finally these conclusion reached at the systematic expression methods and when the system was build up, this theory was come true in Art such as De Stijl, Neo-Pasticism, Russian Suprematism and Constructism. For that reason, formal solution to achieve mass reductions was found in Art, so people connected Industry with Art at that time. Systematic expression methods in Art have characteristics of system and reflect mathematics and geometry theory which is based on the system theory. This study analyzes the systematic methods in contemporary interior space through the concept of systematic expression methods in Swiss Allianz's works which used the systematic expression methods and also inquires how the common meaning of system after recent times effect to contemporary design.

• 한국재난정보학회 논문집
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• 제11권4호
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• pp.542-547
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• 2015

본 연구는 복잡다단한 환경변화에 효과적으로 대응하기 위하여 오늘날 여러 학문 분야에서 주로 이용되고 있는 복잡계 이론(Complex System Theory)의 사고와 방법론을 기반으로 테러대응을 위한 분야별 제 접근에 대하여 논하는데 그 목적이 있다. 그 결과 초기조건의 민감성, 프랙탈과 자기유사성, 자기 조직화, 창발, 공진화, 혼돈의 가장자리의 복잡계 이론을 통하여 테러대응 분야의 적용가능성을 은유적으로 탐색할 수 있을 것이다.

• 동의생리병리학회지
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• 제24권3호
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• pp.353-360
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• 2010

Huang di's Four Classics introduces the first full-scale Yin-Yang theory. The ancient idea of Yin-Yang could be classified systematically throughout Huang di's Four Classics and make itself the cause of creation, movement, and variation. The Tao of essence and Reason-Law(理法) is a single 'One'(一) and completes the reality of Tao adopting Yin-Yang as an elementary. The elementary of Yin-Yang has rules and laws and then the Tao manifest itself through Yin-Yang. The features of Yin-Yang theory in Huang di's Four Classics are placed on the explanation of the structure of the universe embodied as class and system. The class and system are the structured worlds in the space based on the upper and lower sides Yin-Yang idea(上下陰陽觀). It means the system by Yin-Yang theory, corresponding to the flat structure of the Sky and the Earth mentioned in Gaitian theory, one of the ancient theory of the universe structure. By adopting Huang di's Four Classics' Tian-zhi Yin-Yang theory(天地陰陽論) and developing the class system in human bodies, The Hwangjenegyeng appreciates human bodies as a whole. In addition, by applying Four seasons Yin-Yang theory not only to human bodies but also to the space of Liu-he(六合) and the time of Four Seasons(四時), it developed Yin-Yang theory of Huang di's Four Classics more abundantly and embodied Yin-Yang theory in many fields including physiology, pathology, diagnostics, and prescriptions.

• The Journal of Asian Finance, Economics and Business
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• 제7권10호
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• pp.795-802
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• 2020

This study seeks to determine the effect of the application of accounting information system (AIS), internal control system, and human resource (HR) competency on the quality of local government financial statements (FS). This study uses agency theory and compliance theory. Agency theory is used to explain that there is a link between the society as the principal and the government as the agent. Compliance theory is a theory, which states that every agency is obliged to comply with regulations because the law-drafting authority has the right to dictate behavior. The population in this study were employees of the financial division of local government organizations in one of the districts in Central Java, Indonesia. The total samples in this study was 106 respondents. The data used are primary data taken from distributing questionnaires to respondents. The method of analysis used to test the hypothesis was multiple linear regression analysis. The results of hypothesis testing indicate that HR competency has an effect on the quality of FS; however, the application of AIS and internal control system has no effect on the quality of FS. The implication of this research underlines the importance of HR competency to improve the quality of local government FS.

• 대한한의학원전학회지
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• 제25권2호
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• pp.1-13
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• 2012

Objective : Zhang, Zhongjing(張仲景)'s Sanghanlun(傷寒論) is based on Six-channels system(六經) to classified a disease. But the notion of Six-channels system seems to be a very various angles. For example, Meridian and collateral theory(經絡說), Viscera and Bowels theory(臟腑說), Grade theory(段階說), Surface theory(地面說), Symptoms theory(症候群說), Six-disease theory(六病說), Eight principle pattern theory(八綱說) and all the rest of it. Above all things Meridian and collateral theory was very frequently quoted to explain the Six-channels system(六經). But it's true notion is not restrict to a meridian vessel(經脈). Method : I will try to describe the Sanghanlun's Greater yang disease(太陽病) through the Ke-qin(柯琴)'s Taiyangbingjie(太陽病解), and I would like to point out that the existing perception that Greater yang(太陽) is connected with Bladder meridian(足太陽膀胱經) is wrong. Result : Ke-qin's Taiyangbingjie explained the greater yang disease was connected with Heart(yang within yang), which was located in the top half and the outer layer of the body. In addition to the presence of the diaphragm or lungs are involved with. Conclusion : Practical meaning of greater yang disease is not connect with Bladder meridian, but it is related to the Heart and Lung for maintain the Nutrient and defense circulation (營衛循環).

• 한국시스템다이내믹스연구
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• 제12권4호
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• pp.63-92
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• 2011

The purpose of this paper is to investigate a possibility of applying multimethodological approach for solving a dilemma. The motivation of this attempt is that the two different approaches, the system dynamics and the theory of constraints, resemble each other in having mental models for describing the target system and using graphic tools for representing those mental models. After a brief discussion on the comparison of the two approaches, a combined method applying to the problem of dilemma is suggested. For an experimental example, the proposed approach is applied to the sales and finance conflict on an inventory issue. The study shows that the suggested approach is able to complement each other's drawbacks. Especially constructing a stock-and-flow model and implementing a computer simulation would be very useful for quantifying the system's behavior which is hardly tracked down when applying the theory of constraints alone.

• 디지털융복합연구
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• 제16권11호
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• pp.69-79
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• 2018

본 연구는 '흥미'와 '자기결정성 이론' 이라는 동기 이론을 체계적으로 접목한 초등 영어 e-Learning 시스템(www.englishbuddy.kr)을 개발하고, 이를 3,100개 학원에서 적용해 본 후 실제로 학습자의 내적 동기가 향상되었는가를 측정한 것이다. 동기 전략이 적용된 이러닝 시스템으로 학습한 학습자 328명과 다른 영어 학습 프로그램 학습자 150명의 설문지 조사 분석 결과, 동기 전략이 적용된 이 러닝 시스템이 학습자의 '흥미'와 '심리적 욕구'를 만족시키고 있다는 것이 밝혀짐으로써 '학습자의 동기를 높이는 동기 전략'이 구체화되었다. 본 연구를 통해 e-Learning 환경에서 학습자의 동기가 높아지는 특징이 명확해짐으로써, e-Learning 학습을 발전시키고, 또한 '흥미'와 '자기결정성 이론' 이라는 동기 이론을 체계적으로 접목한 e-Learning 시스템을 실제로 구축하고, 3,100개 학원, 16,000명 학습자에게 적용시켜 본 매우 실증적인 연구라는 점에서 그 연구 의의가 있다 하겠다.

• International Journal of Fuzzy Logic and Intelligent Systems
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• 제15권2호
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• pp.121-125
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• 2015

In this paper, we propose a method that extracts features from character patterns using the fractal dimension of chaos theory. The input character pattern image is converted into time-series data. Then, using the modified Henon system suggested in this paper, it determines the last features of the character pattern image after calculating the box-counting dimension, natural measure, information bit, and information (fractal) dimension. Finally, character pattern recognition is performed by statistically finding each information bit that shows the minimum difference compared with a normalized character pattern database.