• Title/Summary/Keyword: system theory

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A Study on 'The Influence of the Theory of Cusanus on the Leonardo's Theory of the Centralized plan' ('쿠사누스 철학이 레오나르도 다 빈치의 중앙집중형 공간 연구에 미친 영향'에 관한 연구)

  • Hwang Min-Hye;Lee Ji-Min
    • Korean Institute of Interior Design Journal
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    • v.15 no.4 s.57
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    • pp.12-20
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    • 2006
  • The purpose of this study is to analyze the influence of theory of Cusanus on the Leonardo's theory of the centralized plan. In Renaissance, Neo-Platonism was so popular that is wat influenced nearly every architecture, literature, painting, sculpture and so on. Theory of Neo-Platonism was so various that every Neo-Platonist had his own theory. Among them, Cusanus focused his theory on rationality, mathematics rather than the medieval symbolism and studied the relationship between the God and men. In the same age, Leonardo da Vinci studied the planning system influenced on many architects works, including Bramante s. His planning system came not from symbolic appearance but from his scientific and rational researches as the theory of Cusanus. This study is to compare Cusanus Neo-Platonism theory and artistie view shown in Leonardo da Vinci's memorandum and drawing and to ascertain the influential relationship, abstracting the common things, and to substitute the characteristics that are seen in his centralized space sketch, abstracting the key words. The study on Cusanus will take advantage of the issued books and will requote Cusanus's copied ones.

A Study on the Effects of Innovation Characteristics and Quality of Appliance Systems on Intention to Adopt (어플라이언스 시스템의 혁신특성과 품질이 채택의도에 미치는 영향에 관한 연구)

  • Yoo, Eungjoon;Kim, Yonghee;Park, Youngju;Choi, Jeongil
    • Journal of Korean Society for Quality Management
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    • v.43 no.3
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    • pp.421-438
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    • 2015
  • Purpose: The purpose of this study was to grasp the level of effects innovative features and quality of the appliance system on organizational performance and ultimately analyze the willingness of the IT staff to adopt an appliance system. Methods: The survey was conducted on 350 vendors' clients and partners who currently use an appliance system from March to May 2014. A total of 331 effective questionnaires were collected and analyzed using PASW18 and SmartPLS. Results: The results show that relative advantage, facilitating condition and trialability and quality factors all had an effect on organizational performance expectations. Further, when an appliance system is adopted, it was shown that cost and reliability emphasized by a vendor did not produce any significant effects on organizational performance expectations. Conclusion: This study is significant as it is the first to combine such models as Innovation Diffusion Theory, Information Systems Success Model, and Unified Theory of Acceptance and Use of Technology with a new external variable. In addition, it illustrated how variables affect the adoption of an appliance system such as a new innovation system.

A Study of the Depth Control System and the Collision Avoidance System for the Manta-type UUV (만타형 UUV의 심도제어와 충돌회피에 관한 연구)

  • Kim, Ju-Han;Lee, Seung-Keon;Lee, Sang-Eui;Bae, Cheol-Han
    • Journal of Navigation and Port Research
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    • v.32 no.6
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    • pp.447-452
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    • 2008
  • In this paper, the automatic depth control system and the collision avoidance system of the Manta UUV have been established in vertical and horizontal plane. The PID control theory and the Fuzzy theory are adopted in this system. The 6-DOF MMG model had been established by theoretical calculations and captive model test results. The depth control simulation results have been fully presented. The collision risks of the UUV had calculated by the fuzzy theory with the virtual sonar system. Finally, the automatic depth control system and the collision avoidance simulation system of Manta UUV have been fully developed and simulated.

Parametric Study on Bellows of Piping System Using Fuzzy Theory

  • Lee Yang-Chang;Lee Joon-Seong
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.6 no.1
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    • pp.58-63
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    • 2006
  • This paper describes a novel automated analysis system for bellows of piping system. An automatic finite element (FE) mesh generation technique, which is based on the fuzzy theory and computational geometry technique, is incorporated into the system, together with one of commercial FE analysis codes and one of commercial solid modelers. In this system, a geometric model, i.e. an analysis model, is first defined using a commercial solid modelers for 3-D shell structures. Node is generated if its distance from existing node points is similar to the node spacing function at the point. The node spacing function is well controlled by the fuzzy knowledge processing. The Delaunay triangulation technique is introduced as a basic tool for element generation. The triangular elements are converted to quadrilateral elements. Practical performances of the present system are demonstrated through several analysis for bellows of piping system.

PERIODIC SOLUTIONS FOR THE NONLINEAR HAMILTONIAN SYSTEMS

  • Jung, Tacksun;Choi, Q-Heung
    • Korean Journal of Mathematics
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    • v.17 no.3
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    • pp.331-340
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    • 2009
  • We show the existence of nonconstant periodic solution for the nonlinear Hamiltonian systems with some nonlinearity. We approach the variational method. We use the critical point theory and the variational linking theory for strongly indefinite functional.

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Development of the Fuzzy Expert System for the Reinforcement of the Tunnel Construction (터널 시공 중 보강공법 선정용 퍼지 전문가 시스템 개발)

  • 김창용;박치현;배규진;홍성완;오명렬
    • Proceedings of the Korean Geotechical Society Conference
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    • 2000.03b
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    • pp.101-108
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    • 2000
  • In this study, an expert system was developed to predict the safety of tunnel and choose proper tunnel reinforcement system using fuzzy quantification theory and fuzzy inference rule based on tunnel information database. The expert system developed in this study have two main parts named pre-module and post-module. Pre-module decides tunnel information imput items based on the tunnel face mapping information which can be easily obtained in-situ site. Then, using fuzzy quantification theory II, fuzzy membership function is composed and tunnel safety level is inferred through this membership function. The comparison result between the predicted reinforcement system level and measured ones was very similar. In-situ data were obtained in three tunnel sites including subway tunnel under Han river, This system will be very helpful to make the most of in-situ data and suggest proper applicability of tunnel reinforcement system developing more resonable tunnel support method from dependance of some experienced experts for the absent of guide.

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Design and Fabrication of Super Water-Saving Toilet System by Theory of Inventive Problem Solving (TRIZ) (창의적 문제해결 이론(TRIZ)를 활용한 초절수형 양변기 시스템의 설계 및 제작)

  • Lee, Kyeong-Won;Lee, Hong-Suk
    • Proceedings of the KSME Conference
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    • 2001.06c
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    • pp.376-379
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    • 2001
  • This paper describes the design and fabrication process of super water-saving toilet bowl system by the theory of inventive problem solving (TRIZ). The physical contradiction in TRIZ is defined to obtain the conceptual design for saving water in toilet bowl system with preventing the bad smell from septic tank. The super water-saving toilet bowl system is obtained by using the separation principle in time for resolving the physical contradiction. The consumption of water in the prototype system fabricated, is estimated about $3{\ell}$ comparing with $13{\ell}$ of that in conventional toilet bowl system. The noise from water in the prototype toilet bowl system is decreased by 1/3 of that in conventional toilet bowl system.

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A Study on the Design of the Radar Data Integrating System (레이다 정보처리용 통합 정보처리 시스템 셜계에 관한 연구)

  • 이상웅;최진일;라극환;양기덕;조동래
    • Journal of the Korean Institute of Telematics and Electronics B
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    • v.32B no.5
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    • pp.798-811
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    • 1995
  • In this study, radar data integrating and processing systems were designed for the data processing of various information from many kinds of radar in a single data processing system. The characteristics of the data integrating system were analyzed by the system simulation with the queueing theory. The designed data integrating systems can be divided into a centralized and a distributed type. In the system structure, we used UNIX message que as the real time processor and the queueing theory for the performance evaluation of the information flow in the systems. For the analysis of the performance of inforamtion flow in both models, queueing theory was applied to and implemented with the simulation package, OPNET system and C language. From the simulation result we could understand the system factors which effect the system performance and characteristics on the data processing.

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