• Title/Summary/Keyword: structural rules

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Development of Preliminary Structural Design System for Reinforced Concrete Structures (철근 콘크리트 구조의 초기 구조설계 시스템 개발)

  • 안은경;김남희;이병해
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 1997.10a
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    • pp.197-204
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    • 1997
  • The development of computer-integrated design systems that fully support structural design process needs the computerization of structural design at the preliminary design stage. The objective of this paper is to develop a prototype system for preliminary design of reinforced concrete structures. This study focuses on the development of a natural design process oriented GUI(Graphic User Interface) and a representation of an experienced knowledge. The prototype system has been currently implemented using the objected-oriented programming concepts, the program language(i.e.,Visual C++) and the expert shell(i.e., Intelligent Rules Element).

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Design of Composite Material Structures

  • Kim, Duk-Hyun-
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 1991.10a
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    • pp.5-14
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    • 1991
  • The basic rules and principles for designing structures with composite materials are briefly and intensively presented. The proposed design steps are explained. For preliminary design, use of quasi-isotropic properties is proposed. The validity of this proposal will be reported by separate papers.

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Optimization of FCM-based Radial Basis Function Neural Network Using Particle Swarm Optimization (PSO를 이용한 FCM 기반 RBF 뉴럴 네트워크의 최적화)

  • Choi, Jeoung-Nae;Kim, Hyun-Ki;Oh, Sung-Kwun
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.57 no.11
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    • pp.2108-2116
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    • 2008
  • The paper concerns Fuzzy C-Means clustering based Radial Basis Function neural networks (FCM-RBFNN) and the optimization of the network is carried out by means of Particle Swarm Optimization(PSO). FCM-RBFNN is the extended architecture of Radial Basis Function Neural Network(RBFNN). In the proposed network, the membership functions of the premise part of fuzzy rules do not assume any explicit functional forms such as Gaussian, ellipsoidal, triangular, etc., so its resulting fitness values directly rely on the computation of the relevant distance between data points by means of FCM. Also, as the consequent part of fuzzy rules extracted by the FCM - RBFNN model, the order of four types of polynomials can be considered such as constant, linear, quadratic and modified quadratic. Weighted Least Square Estimator(WLSE) are used to estimates the coefficients of polynomial. Since the performance of FCM-RBFNN is affected by some parameters of FCM-RBFNN such as a specific subset of input variables, fuzzification coefficient of FCM, the number of rules and the order of polynomials of consequent part of fuzzy rule, we need the structural as well as parametric optimization of the network. In this study, the PSO is exploited to carry out the structural as well as parametric optimization of FCM-RBFNN. Moreover The proposed model is demonstrated with the use of numerical example and gas furnace data set.

A Study on the evolution theory of digital game rules (디지털 게임 규칙의 진화론에 관한 연구)

  • Chon, Suk;Yoon, Joon-Sung
    • Journal of Korea Game Society
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    • v.9 no.1
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    • pp.21-31
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    • 2009
  • This research is to classify game rules which are important factors for the game, and to define the basis of the each level of rules and concepts. In terms of these definitions, the process of transformation in the game rule is analyzed, and examined the development related to evolution. The rule of digital game is analogous to the biological evolution. From this point of view, This research presents the structural similarities between the game rules and biological evolution. It is for the investigation of the development using new perspective and for the conceptualization of the process. Moreover it makes us rediscover the game as a scholastic research subject.

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A Survey on the Managing of Headings in Library Cataloging: On the Basis of the University Libraries in B City (도서관 목록에서 표목의 취급 실태에 관한 연구 - B시의 대학도서관들을 중심으로 -)

  • Doh, Tae-Hyeon
    • Journal of Korean Library and Information Science Society
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    • v.41 no.4
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    • pp.171-189
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    • 2010
  • This is the survey on the actual condition about the managing of headings in library cataloging. KCR4, the standard rules for the library cataloging in Korea, has no rules for the main entry headings and uniform headings. But the cataloging records are not standardized because a lot of libraries in Korea use the main entry headings and uniform headings yet. A structural revision of KORMARC is required in order that all library follow the rules on the KCR's main entry headings. And the rules for uniform heading used until KCR4's policy about the heading is decided according to international trends are needed.

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Erasure of Memory and Theory of Modern Architecture (이성주의의 기억말소와 비올레 르 ??의 근대건축이론)

  • Kang, Tae-Woong
    • Journal of architectural history
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    • v.15 no.4
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    • pp.23-36
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    • 2006
  • Since he was a leading figure in nineteenth century architecture, Viollet-le-Duc's architectural theory is crucial to the foundation of modern architecture. He has been called a Gothic Revivalist, a Structural Rationalist and a Positivist. The first title was perhaps due to his vigorous restoration of Gothic works such as $N\hat{o}tre$ Dame, but he did not adore the Gothic style just for itself. Rather, he hoped to deduce some principles from the style. So how did he manage this? In his book "Entretiens sur l'Architecture (Lectures on Architecture), published between 1864 and 1872, he mentions using Descartes' four rules for reaching architectural certainty in contrast with the chaotic situation during that modernising period. Furthermore Viollet-le-Duc's theory can be seen as a serious attempt to translates Descartes' philosophical rules into systems of architectural speculation. Descartes' four rules of doubt are anchored in mathematical propositions, and without mathematical distinctions, none of these rules are valid. In other word, mathematics for Viollet is the yardstick of judgement between distinctness and indistinctness. Many architectural problems arise from this view. In this paper, the validities of applying Descartes' method of doubt to architectural discourse will be discussed in order to address the question:-Did Viollet-le-Duc clearly grasp Cartesian method by which memory was erased from the world?

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Ontology Mapping and Rule-Based Inference for Learning Resource Integration

  • Jetinai, Kotchakorn;Arch-int, Ngamnij;Arch-int, Somjit
    • Journal of information and communication convergence engineering
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    • v.14 no.2
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    • pp.97-105
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    • 2016
  • With the increasing demand for interoperability among existing learning resource systems in order to enable the sharing of learning resources, such resources need to be annotated with ontologies that use different metadata standards. These different ontologies must be reconciled through ontology mediation, so as to cope with information heterogeneity problems, such as semantic and structural conflicts. In this paper, we propose an ontology-mapping technique using Semantic Web Rule Language (SWRL) to generate semantic mapping rules that integrate learning resources from different systems and that cope with semantic and structural conflicts. Reasoning rules are defined to support a semantic search for heterogeneous learning resources, which are deduced by rule-based inference. Experimental results demonstrate that the proposed approach enables the integration of learning resources originating from multiple sources and helps users to search across heterogeneous learning resource systems.

The Influence of Organizational External Factors on Construction Risk Management among Nigerian Construction Companies

  • Adeleke, A.Q.;Bahaudin, A.Y.;Kamaruddeen, A.M.;Bamgbade, J.A.;Salimon, Maruf Gbadebo;Khan, Muhammad Waris Ali;Sorooshian, Shahryar
    • Safety and Health at Work
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    • v.9 no.1
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    • pp.115-124
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    • 2018
  • Background: Substantial empirical research has shown conflicting results regarding the influence of organizational external factors on construction risk management, suggesting the necessity to introduce a moderator into the study. The present research confirmed whether rules and regulations matter on the relationships between organizational external factors and construction risk management. Methods: Based on discouragement and organizational control theory, this research examined the effects of organizational external factors and rules and regulations on construction risk management among 238 employees operating in construction companies in Abuja and Lagos, Nigeria. A personally administered questionnaire was used to acquire the data. The data were analyzed using partial least squares structural equation modeling. Results: A significant positive relationship between organizational external factors and construction risk management was asserted. This study also found a significant positive relationship between rules and regulations and construction risk management. As anticipated, rules and regulations were found to moderate the relationship between organizational external factors and construction risk management, with a significant positive result. Similarly, a significant interaction effect was also found between rules and regulations and organizational external factors. Implications of the research from a Nigerian point of view have also been discussed. Conclusion: Political, economy, and technology factors helped the construction companies to reduce the chance of risk occurrence during the construction activities. Rules and regulations also helped to lessen the rate of accidents involving construction workers as well as the duration of the projects. Similarly, the influence of the organizational external factors with rules and regulations on construction risk management has proven that most of the construction companies that implement the aforementioned factors have the chance to deliver their projects within the stipulated time, cost, and qualities, which can be used as a yardstick to measure a good project.

Modal transformation tools in structural dynamics and wind engineering

  • Solari, Giovanni;Carassale, Luigi
    • Wind and Structures
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    • v.3 no.4
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    • pp.221-241
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    • 2000
  • Structural dynamics usually applies modal transformation rules aimed at de-coupling and/or minimizing the equations of motion. Proper orthogonal decomposition provides mathematical and conceptual tools to define suitable transformed spaces where a multi-variate and/or multi-dimensional random process is represented as a linear combination of one-variate and one-dimensional uncorrelated processes. Double modal transformation is the joint application of modal analysis and proper orthogonal decomposition applied to the loading process. By adopting this method the structural response is expressed as a double series expansion in which structural and loading mode contributions are superimposed. The simultaneous use of the structural modal truncation, the loading modal truncation and the cross-modal orthogonality property leads to efficient solutions that take into account only a few structural and loading modes. In addition the physical mechanisms of the dynamic response are clarified and interpreted.