• Title, Summary, Keyword: Elements

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Vibration of elastic and viscoelastic multilayered spaces

  • Karasudhi, P.;Liu, Y.C.
    • Structural Engineering and Mechanics
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    • v.1 no.1
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    • pp.103-118
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    • 1993
  • The near field is discretized into finite elements, and the far field into infinite elements. Closed form far-field solutions to three fundamental problems are used as the shape functions of the infinite elements. Such infinite elements are capable of transmitting all surface and body waves. An efficient scheme to integrate numerically the stiffness and mass matrices of these elements in presented. Results agree closely with those obtained by others.

A study on the evaluation of elderly care facilities for elderly people with dementia using the therapeutic environment elements (치유환경요소를 이용한 치매노인요양시설 평가 연구)

  • Cho, Ju-Young;Lee, Hyo-Won
    • Journal of The Korea Institute of Healthcare Architecture
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    • v.16 no.1
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    • pp.25-33
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    • 2010
  • This study is to realize the importance of the therapeutic environment of nursing facilities for elderly people; to comparatively analyze the therapeutic environment elements of the facilities in Gwangju, Jeonnam area, Seoul, and Japan by classifying the therapeutic environment elements according to two aspects on the basis of preceding studies; and to find out the differences among the three regional groupsnaFirst, all therapeutic elements were put together on the basis of two preceding studies based on the two aspects. Second, an expert group was organized primarily with architects and care-givers to find out the therapeutic environment elements of nursing facilities for elderly people with dementia, and to draw up an evaluation standard. Third, the regional differences were analyzed, by comparing the distribution of therapeutic elements of the facilities in Gwangju-Jeonnam area, Seoul, and Japan, through the found therapeutic environment elements. Consequently, eighteen therapeutic environment elements were found out of total 32 elements, and the elements were classified into nine factors based on the meaning of each element. The therapeutic environment elements were showed highest in Japan, and lowest in Gwangju-Chonnam area according to the comparative case analysis based on the nine factors. Especially, there were great regional differences in terms of awareness, safety, orientation, privacy, and freedom of choice.

Residential Factors and Use Conditions in the Living Spaces of South Korea and Japan (한.일 주거 공간에서의 거주요소와 그 이용 상황)

  • Park, Ji-Yeon
    • Journal of the Korean housing association
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    • v.22 no.4
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    • pp.1-9
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    • 2011
  • The purpose of this research lies in providing basic data for appropriate territorial adjustment within the family by understanding the relation to family members and how 'territorial dislocations' caused by differences in personal space and behavioral domains are used and controlled as living elements. As a result, the following data could be obtained. 1. General usage conditions of living elements. When the order of usage conditions of living elements is reviewed, the living elements interspersed at the personal space and behavioral territory in public and private spaces show a high usage rate, and in the case where living elements are shared with other families, many living elements are controlled by each family. Also, for living elements with a high possibility of sharing, a high consciousness for public usage is shown rather than elements controlling the territory, and the usage rate as territory controlling living elements is not high. 2. Compared to Japan, in Korea elements that can be placed at a certain location are often used as elements that resolve 'territorial dislocation', using furniture rather than objects. On the other hand, in Japan 'territorial dislocation' is often resolved by establishing a personal territory within the living space. Lastly, compared to Japan, in Korea 'territorial dislocation' is often resolved by maintaining a personal territory spatially rather than territorially.

Design Parameter Structure for Architectural Elements of External Kinetic Facade

  • Ji, Seok-Hwan;Lee, Byung-Yun
    • KIEAE Journal
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    • v.16 no.3
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    • pp.35-46
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    • 2016
  • Purpose: This paper aims to analyse the composition system of architectural elements including shape, kinetic and material elements of kinetic facades and establish the design parameter system as a common conceptual and practical knowledge sharing platform with mechanical and electrical experts. Method: This research has been conducted in a three steps. At first, 120 cases of external shading devices are analyzed and their classification criteria have been established. Secondly geometric, kinetic and material elements are categorized in a common kinetic facade coordinates system considering environmental effects and operation method, and the applicability of combination of each element are tested. Lastly core design parameters for each element have been established in a common office building installation coordinate. Result: Geometry elements are categorized into seven geometric shapes and kinetic elements is categorized into basic linear and rotational motion and combinational folding and rolling motion. The combined set of parameters for three elements composes the whole design parameters for architectural elements of kinetic façade. Design parameters of shape elements are composed of shape, installation and arrangement parameters; design parameters for kinetic elements are composed of axis and range parameters; and design parameters of material elements are composed of thermal, lighting and color parameters.

Non-conforming modes for improvement of finite element performance

  • Choi, Chang-Koon;Lee, Tae-Yeol
    • Structural Engineering and Mechanics
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    • v.14 no.5
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    • pp.595-610
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    • 2002
  • This paper presents an efficiency of various non-conforming (NC) modes in development of a series of new finite elements with the special emphasis on 4-node quadrilateral elements. The NC modes have been used as a key scheme to improve the behaviors of various types of new finite elements, i.e., Mindlin plate bending elements, membrane elements with drilling degrees of freedom, flat shell elements. The NC modes are classified into three groups according to the 'correction constants' of 'Direct Modification Method'. The first group is 'basic NC modes', which have been widely used by a number of researchers in the finite element communities. The basic NC modes are effective to improve the behaviors of regular shaped elements. The second group is 'hierarchical NC modes' which improve the behaviors of distorted elements effectively. The last group is 'higher order NC modes' which improve the behaviors of plate-bending elements. When the basic NC modes are combined with hierarchical or higher order NC modes, the elements become insensitive to mesh distortions. When the membrane component of a flat shell has 'hierarchical NC modes', the membrane locking can be suppressed. A number of numerical tests are carried out to show the positive effect of aforementioned various NC modes incorporated into various types of finite elements.

The Effect of Sensibility Elements and Screen Composition Elements of Internet Fashion Shopping Mall on Purchase Intention (인터넷 패션 쇼핑몰의 감성요소와 화면구성요소가 구매의도에 미치는 영향)

  • 박현희;구양숙
    • Journal of the Korean Society of Clothing and Textiles
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    • v.26 no.2
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    • pp.315-324
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    • 2002
  • The purpose of this study was to fed out the effects of sensibility elements and screen composition elements on purchase intention on the internet fashion shopping mall. A total of 200 responses were collected from a Questionnaire survey. The sensibility words were used for sensibility elements analysis. Screen composition elements were divided into 5 factors by factor analysis; product property, convenience of shopping, service, design, and promotion. The study showed that the satisfaction of sensibility elements and screen composition elements led to a positive purchase intention.

An Analytic Network Process Model for Ranking Decision of Intelligent Building System (지능형 빌딩 시스템(IBS)의 등급 결정을 위한 ANP 모형 -IBS 구현 이득을 기준으로-)

  • You, Su-Hyun;Kim, Sheung-Kown
    • IE interfaces
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    • v.13 no.2
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    • pp.234-245
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    • 2000
  • In this paper, the conceptual framework of IBS(Intelligent Building Systems) is redefined, and we propose two ANP(Analytic Network Process) models for ranking IBS. Traditional models have ranked IBS according to technical features or the number of elements in IBS. But, we consider relative functional importance among IBS elements for efficient building operation. According to the structure of interactive-relationship among IBS elements, we present two types of model. The one is Model A that is composed of both hierarchical and network structures. It has $12{\times}12$ supermatrix consists of interdependent relationship between 6 benefit elements(Productivity, Saving, Safety, Convenience, Pleasantness, Environment Affinity) and 6 IBS elements(Building Operation, Security, Safety, Telecommunication(TC), Office Automation(OA), other elements). Each of 6 IBS elements has subelements in hierarchical structure. The other is Model B that has $25{\times}25$ supermatrix consists of interdependent relationship between 6 benefit elements and 19 IBS sub elements. Merits and demerits of each model are discussed in detail.

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Analysis of Interior Design Elements in Food and Beverage Applying the Psychological Process of Purchasing(AIDMA) Model (구매심리과정(AIDMA)모델을 적용한 식음공간의 실내디자인요소 분석)

  • Lee, Mi-Jin;Han, Jeong-Won
    • Korean Institute of Interior Design Journal
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    • v.21 no.2
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    • pp.112-122
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    • 2012
  • The purpose of this study is to provide fundamental data that can improve added value of commercial space strategically using the identification of relationship between the process of consumers' purchasing psychology (AIDMA : Attention, Interest, Desire, Memory, Action) and elements of interior design. For this purpose, case study and survey were carried out on food and beverage spaces, where they were doing business for more than two years, were selected from the ones appeared in the interior journal "A." Based on the study, basic details including a ground plan, design summary and representative image were identified through preliminary research, and a researcher visited the target spaces and carried out a research and analysis on interior design elements. Three spaces among targets of the case study were selected to identify the relation between design elements and AIDMA items which consumers feel, and the survey was conducted on the customers of the selected food and beverage spaces. Results of the case study on the 18 food and beverage spaces showed that features of the each of AIDMA items in material and color elements were most well expressed. As a result of survey conducted on visitors of each food and beverage space, features of each item were expressed in overall design elements. In particular, space elements and color elements in "Space 1," space elements and lighting elements in "Space 2" and space elements, furniture & objet elements in "Space 3" were most well expressed in each space. There were slight differences depending on individual characteristics such as design concept, location and business operation of target food and beverage spaces but attributes of AIDMA items were remarkably recognized in common in the space elements.

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A Study on the Comparison of Triangular and Quadrilateral Elements for the Analysis of 3 Dimensional Plate Structures (3차원 판구조물 해석을 위한 삼각형요소와 사각형 요소의 비교에 관한 연구)

  • 왕지석;김유해;이우수
    • Journal of the Korean Society of Marine Engineering
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    • v.26 no.3
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    • pp.344-352
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    • 2002
  • In the analysis of the 3 dimensional plate structures by the finite element method, the triangular elements are generally used for the global stiffness matrix of the analyzed system. But the triangular elements of the plates have some problems in the process of formulation and in the precision of analysis. The formulation of the finite element method to analyze 3 dimensional plate structures using quadrilateral elements is presented in this paper. The degree of freedom off nodal point is 6, that is, the displacements in the direction off-y-z is and the rotations about x-y-z axis and then the degree of freedom off element is 24. For the comparison of the analysis using triangular elements and quadrilateral elements, the rectangular plates subjected to the uniform load and a concentrated load on the centroid of the plate, for which the theoretical solutions have been obtained, are analyzed. The calculated deflections of the rectangular plates using the finite element method by the triangular elements and the quadrilateral elements are also compared with the deflections of the plates calculated by theoretical solutions. The defections of the rectangular plates calculated by the finite element method using the quadrilateral elements are closer to the theoretical solutions than the defections calculated by the finite element method using the triangular elements. The deflection of the centroid of plate, calculated by the finite element method, converges to that of theoretical solution as the number of elements is increased. This convergence is much more rapid for the case of using the quakrilateral elements than fir the case of using triangular elements.

WEAKLY CANCELLATIVE ELEMENTS IN SEMIGROUPS

  • Shin, Jong-Moon
    • The Pure and Applied Mathematics
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    • v.17 no.1
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    • pp.81-86
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    • 2010
  • This paper gives some sorts of weakly cancellative of elements which are to be or not to be left magnifying elements in certain semigroups and gives a semilattice congruence in a weakly separative semigroup.