• 제목/요약/키워드: Symbolic function

검색결과 206건 처리시간 0.025초

구조해석(構造解析)을 위한 Symbolic Manipulation Program (A Symbolic Manipulation Computer Program for Structural Analysis)

  • 심재수
    • 대한토목학회논문집
    • /
    • 제3권4호
    • /
    • pp.95-107
    • /
    • 1983
  • 기존(旣存) 범용 구조해석용(構造解析用) 프로그램들은 선택(選擇)된 역학적(力學的) 이론(理論), 계산(計算) algorithm등이 고정(固定)되어 있으므로 이용자(利用者)는 프로그램을 원하는 대로 control하기 어렵고 프로그램에 정의(定義)된 대로 data input만 준비(準備)한다. 이용자(利用者)가 계산과정(計算過程)을 control 할 수 있으며 원하는 역학적(力學的) 이론(理論) 및 계산(計算) algorithm등을 보완(補完)하여 이용(利用)할 수 있도록 한 구조해석용(構造解析用) 프로그램인 Symbolic Manipulation Program들이 개발(開發)되었으나 이들은 single domain 문제(問題) 해석용(解析用)이므로 대형(大型)콤퓨터가 필요(必要)하다. 본(本) 연구(硏究)에서는 substructure technique을 도입(導入)하여 구조물(構造物)을 multi domain으로 하여 중(中), 소형(小型)콤퓨터로도 해석(解析)할 수 있으며, matrix analysis 및 finite element analysis를 할 수 있도록 finite element characteristic arrays(Stiffness, Mass matrix)등을 계산(計算)하는 Element Subroutine 중 3D Beam element, Plate bending element 및 동력학계산(動力學計算)을 위한 Eigenvalue routine을 포함(包含)한 Symbolic Manipulation Program 개발(開發)이다. 이 프로그램의 구조(構造)는 module화(化)된 독립적(獨立的) 기능(機能)을 가진 processor 들로 구성(構成)되어 프로그램의 수정(修正), 첨가(添加), 삭제(削除)가 용이(容易)하며, Integrated Program Network(IPN) 개념중(槪念中) data base 방법(方法)으로 matrix form으로 된 data의 취급이 효율적(效率的)이다.

  • PDF

루이스 멈퍼드의 건축비평에서 미적 상징의 문제 (Aesthetic Symbolism in Lewis Mumford's Architectural Criticism)

  • 서정일
    • 건축역사연구
    • /
    • 제26권1호
    • /
    • pp.7-16
    • /
    • 2017
  • One of the essential characteristics of Lewis Mumford's architectural criticism is the coherent emphasis on symbolism. Such emphasis stems from his understanding of city and humanity in the context of civilization: first, that the architecture symbolizes institutions of urban civilization; second, that the technical aspect of human nature should be balanced with its artistic aspects. Mumford believed that each architectural type requires an appropriate symbolic expression corresponding to its purpose and that a new symbolic expression, in a new cultural context, should replace the conventional expression. He took symbolism for an intuitional expression, and read multi-layered meanings of architecture: 'practical function' by way of rational reason and 'symbolic function' by way of intuition. He pursued a balance between practicality and beauty to rectify the situation of modern civilization, in which symbolism, the expression of its intuitional aspect, is in crisis. Ultimately, for Mumford, the essential task of architectural critic is of the interpretation of symbolism, aiming at the correspondence and communication between the architect(artist)'s intuition and critic(interpreter)'s via the media of symbol. The critic can play some privileged role of interpreting even symbols unintended by the architect. The ideal architectural critic, after all, would be the one who is able to understand the city, technology and human beings in the perspective of civilization and to interpret the architect's artistic expression in its highest form through intuition. Mumford established himself as such a critic and evaluated the status of aesthetic accomplishment of his contemporary architecture and technological civilization, giving emphasis on the artistic practice in architecture as a solution.

환경보강프로그램이 시설노인의 인지기능에 미치는 효과 (The Effects of Environmental Enrichment Program on Cognitive Function among Institutionalized Elderly)

  • 소희영
    • 성인간호학회지
    • /
    • 제17권1호
    • /
    • pp.128-138
    • /
    • 2005
  • Purpose: As population of elderly people continues to grow, successful aging has risen to the top of the nursing science agenda. The successful aging includes maintenance of the cognitive and physical functions, as well as emotional well-beings. This study was carried out to evaluate effects of the environmental enrichments on cognition of institutionalized elderly. Method: The population was selected among the elderly aging over 65 residing at two of institutions. A quasi experimental design was used with non-equivalent control group. Study subjects were thirteen for each group. For the experimental group, physical, social and symbolic environmental enrichment program was provided for six weeks. The data were analyzed by repeated measure ANOVA and repeated measure ANCOVA using SPSS Win 11.0. Result: Compared to control group, the experimental group showed a significant difference on DSF(F=3.29, p=.046), and TMTA(F=4.76, p=.013) of cognitive function, and depression (F=5.56, p=.007) of emotional distress after 1 and 12 weeks of environmental enrichment program. Conclusion: Findings indicate that physical, social, and symbolic environmental enrichment was effective to partially prevent from cognitive decline, and to decrease emotional distress of elderly. As a nursing intervention, environmental enrichment program for elderly should be expanded for nursing practice to promote healthy aging and to offer support to the growing population of elderly. Further research should be conducted to evaluate the effect on the community elderly.

  • PDF

소설에 나타난 안방의 의미와 용도에 관한 연구 (A Study on 'An-Band' It's Meaning and Practical Use Mentioned in Novel)

  • 오혜경;김대년;서귀숙;신화경;최경실
    • 한국실내디자인학회논문집
    • /
    • 제18호
    • /
    • pp.81-86
    • /
    • 1999
  • The purpose of this study is to find out to meaning and practical use of 'Anbang' of which unique roles and function has not been changed till now since Chosun dynasty. The Study has been carried out by selecting 27 novels in which the word 'Anbang' mentioned frequently and analyzing the sentences with 'Anbang' . The major finding were summarized as follows: 1. Since Chosun dynasty till now, 'Anbang' in most important space for Korean in residential area its meaning and practical use had not been changed. 2. The meaning of Anbang could be categorized into two parts; One was general symbolic meaning which was perceived mentally in general and the other was specific symbolic meaning which was varied by uses. In case of general symbolic meaning 'Anbang' implied a space with light turned on late at night, a very special space from the point of interior decoration and size, a space to keep very important stuffs and a space to deal with very important business. In case of specific symbolic meaning during Chosun dynasty, 'Anbang' was used as a pronoun to imply a mistress as major occupant was a mistress. Since then, gradually, 'Anbang' was used as a pronoun to imply married couple as married couple becomes major occupant. 3. The practical use of 'Anbang' cold be categorized into two; One was routine usage and the other was exceptional usage. The typical routine use were sleeping, dining family gathering, visitor greeting, clothes changing and sewing. The exceptional use were a Sebae(new year's bow), Pyebaek(make a deep bow and offer her gifts to her parents-in-law) and patient curing.

  • PDF

배재대학교 캠퍼스 조경계획의 제안 (A Proposal of Campus Landscape Plan for PaiChai University)

  • 이시영
    • 자연과학논문집
    • /
    • 제16권1호
    • /
    • pp.55-75
    • /
    • 2005
  • This proposal is to present a campus landscape plan for PaiChai University. The site is located in 439-6 Doma-dong, Seo-gu, Taejon City and has an area of $208,499m^2$. The landscape plan covers the following: site inventory and analysis; integration of design program and site analysis; evaluation of design concept; schematic design including circulation form and spatial form; and design development including subarea design. In the design process, the author focused on the integration and interpretation of site conditions as related to the university buildings. He also collectively analyzed and considered the physical development of the outdoor spaces of Paichai University. The following are some of the major areas in the design of the outdoor spaces of Paichai University: 1) a main entrance space as a symbolic square, 2) Paichai central street, 3) a campus core as a greenish square, and 4) a 'Jajuro' plaza as Paichai 'Han' square. The outdoor spaces of Paichai university are created as a new type of campus realm with function, campus quality, original identity, symbolic meaning and images and beauty.

  • PDF

Generalized Stochastic 페트리네트를 이용한 유연생산시스템의 성능평가 (Performance Evaluation of FMS Using Generalized Stochastic Petri Nets)

  • 서경원;박용수;박홍성;김종원
    • 한국정밀공학회:학술대회논문집
    • /
    • 한국정밀공학회 1994년도 추계학술대회 논문집
    • /
    • pp.653-657
    • /
    • 1994
  • A symbolic performance analysis approach for flexible for manufactring systems (FMS) can be formulated based on the integration of Petri Nets (PN) and moment generating function (MGF) concept. In this method, generalized stochastic Petri Nets are used to define performance models for FMS, then MGF nased approach for evaluating stochastic PN is used to derive performance parameters of PN, and finally system performance is calculated. A GSPN model of machine cell is shown to illustrate the proposed method for evaluating such performance indices as production rate, utilization, work-in-process and lead time. The major advantage of this method over existing performance evaluation of FMS is the ability to compute symbolic solutions for performance. Finally future research toward automating performance measure for GSPN models of FMS is discussed.

  • PDF

LEONHARD EULER (1707-1783) AND THE COMPUTATIONAL ASPECTS OF SOME ZETA-FUNCTION SERIES

  • Srivastava, Hari Mohan
    • 대한수학회지
    • /
    • 제44권5호
    • /
    • pp.1163-1184
    • /
    • 2007
  • In this presentation dedicated to the tricentennial birth anniversary of the great eighteenth-century Swiss mathematician, Leonhard Euler (1707-1783), we begin by remarking about the so-called Basler problem of evaluating the Zeta function ${\zeta}(s)$ [in the much later notation of Georg Friedrich Bernhard Riemann (1826-1866)] when s=2, which was then of vital importance to Euler and to many other contemporary mathematicians including especially the Bernoulli brothers [Jakob Bernoulli (1654-1705) and Johann Bernoulli (1667-1748)], and for which a fascinatingly large number of seemingly independent solutions have appeared in the mathematical literature ever since Euler first solved this problem in the year 1736. We then investigate various recent developments on the evaluations and representations of ${\zeta}(s)$ when $s{\in}{\mathbb{N}}{\backslash}\;[1],\;{\mathbb{N}}$ being the set of natural numbers. We emphasize upon several interesting classes of rapidly convergent series representations for ${\zeta}(2n+1)(n{\in}{\mathbb{N}})$ which have been developed in recent years. In two of many computationally useful special cases considered here, it is observed that ${\zeta}(3)$ can be represented by means of series which converge much more rapidly than that in Euler's celebrated formula as well as the series used recently by Roger $Ap\'{e}ry$ (1916-1994) in his proof of the irrationality of ${\zeta}(3)$. Symbolic and numerical computations using Mathematica (Version 4.0) for Linux show, among other things, that only 50 terms of one of these series are capable of producing an accuracy of seven decimal places.

후천성 뇌손상 환자의 화용언어와 집행기능 간 상관성 (Correlation between Pragmatic Language and Executive Function in Patients with Acquired Brain Injury)

  • 이미숙
    • 한국콘텐츠학회논문지
    • /
    • 제16권5호
    • /
    • pp.58-67
    • /
    • 2016
  • 후천성 뇌손상(ABI) 환자의 인지-언어 능력은 하위 영역 간 상호작용의 맥락에서 고려되어야 하는데, 특히 화용언어는 통합적 인지 처리를 관장하는 집행기능과 직결된다. 본 연구에서는 ABI 환자를 대상으로 화용언어와 집행기능 간의 상관성을 규명하고자 하였다. 이를 위해 만 55세 이상의 ABI 환자군 35명(뇌졸중에 의한 실어증 21명, TBI 14명)을 대상으로 화용언어와 집행기능 관련 5개 하위 과제를 평가하였다. 그 결과, 실어증 집단은 비유언어 이해 및 기능/상징언어가 실행화 과제와 유의한 상관성을 보였고, TBI 집단은 모든 과제 간에 유의한 상관성이 있었다. 실어증 집단의 비유언어 이해는 실행화, 그리고 TBI 집단의 비유언어 표현과 기능/상징언어는 각각 계획화와 실행화를 가장 잘 예측하는 과제였다. 본 연구를 통해 ABI 이후의 인지-언어적 중재 시 상호 보완적으로 활용할 수 있는 화용언어 및 집행기능 과제들을 제시할 수 있었다.

기호의 삼분구조에 의한 20세기 여성 패션의 특성 분석 (Charaeteristics of Women′s Fashion in the 20th Century Based on the Threefold Structure of Semiotics)

  • 김은경;김영인
    • 복식
    • /
    • 제54권7호
    • /
    • pp.41-54
    • /
    • 2004
  • This study purposed to apply function form content, the three concepts that have been discussed by many philosophers since ancient times, to fashion design. Specific research goals are : first, to define fashion design based on the three concepts : and second, to examine how each of the three concepts function-oriented, form-oriented and content-oriented design have been expressed in women's fashion in the $20^{th} century. For these purposes. the author considered Morris' semiotics, which is the theoretical background of the three concepts, reviewed previous researches in design area, and applied the findings to fashion design. According to the result of applying the threefold structure of semiotics. which is the theoretical background of the three concepts, the pragmatic dimension of fashion design comprehends all functional rules related to the use of dress such as body motion and protection, health and safety. air flow and durability, and its syntactic dimension comprehend all the formal elements of visual design such as the structure, shape, line, color and material of dress. The semantic dimension of fashion design includes the symbolic meanings of dress expressed by emotion, sentiment and images. The three dimensions exist interdependently with one another. According to the result of considering the characteristics of the three concepts in the scope of women's fashion in the $20^{th} century. function-oriented design is characterized by practicality and simplicity, and has been expressed as the fashion of functionalism in the 1920s, that of minimalism in the 1960s, and the basic style from 1970s to 1980s, 1990s and the present. Form-oriented design has pursued aestheticism, putting stress upon form, and has been expressed with organic shapes imitating patterns found in nature in the 1950s and with optical art fashion in the 1960s. Content-oriented design attaches importance to transmission of delicate meanings related to the mental world of human beings, and is represented with symbolic forms. Such a characteristic has been expressed in fashion in the early 20th century influenced by surrealism and, with various types of design breaking established forms as well as metaphors and humors that characterize design in the late 20th century.

현대 건축의 신디자인 개념에 관한 연구 -포스트모던 건축의 수사학적 표현 기법을 중심으로- (A Study on the New Design Concept in the Contemporary Architecture -Focused on the rhetorical expression of the Postmodern Architecture-)

  • 김은지;이정욱
    • 한국실내디자인학회논문집
    • /
    • 제20호
    • /
    • pp.26-32
    • /
    • 1999
  • The point of this study consists in analysing influences of the postmodern design in the contemporary architecture. Since the modern architecture, new concept of architectural design has been materialized in the Late-Modern and the High-tech style but the revolutionary changes has been tempted by the postmodern architects who introduced the Rhetorical language in the contemporary architecture. In concrete terms postmodern architecture divided architectural elements from existing function (according to U. Eco, it is the primary function of architecture) and gave another function which is the secondary function or the symbolic function or architecture. And the methods of deviation from the conventional code is exactly the rhetorical expression technique which governed the history of art in Europe (but these technique is more intensively applied in the postmodern architecture) So this study is purposed to analyse the different rhetorical "figyres" regarding the syntax and semantic of the architectural langyage, and particularly to approach to the basic mechanism of the New Design Concept in the Contemporary Archiecture.chiecture.

  • PDF