• 제목/요약/키워드: Methodology of Design

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치유효과와 관련한 근거중심설계에 관한 방법론적 고찰 (A Methodological Consideration on the Evidence-Based Design related to Health Effects)

  • 민상충
    • 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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    • 제17권2호
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    • pp.35-44
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    • 2011
  • The aim of this study is to review the literature addressed the methodology to measure and evaluate the health outcomes as evidences for health benefits through the study on the healing environment, garden, therapeutic garden and viewing landscape and so forth. The research methods and measures used to assess health effects in the reviewed studies have applied in a different way ranged from quantitative methods (physical measures or quantitative observations) to qualitative methods (qualitative observations and surveys). In a literature review of research articles on the health outcomes have been found various research methods and measures used to assess health effects. This study will be concentrated mainly on methodological considerations in order to find the significant evidences related to evidence-based design (EBD). Future research should build the body of methodological knowledge to find more empirical evidences as sound scientific data and to improve the effectiveness of design interventions.

수정된 CODARTS 벙법론에서의 실시간 병렬 태스크 자동 구성 (Automation of the Concurrent Real-Time Task Structuring in the modified CDOARTS Methodology)

  • 김규년;정민포;이종구
    • 한국정보과학회논문지:소프트웨어및응용
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    • 제26권1호
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    • pp.106-106
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    • 1999
  • When we design real-time software target system is analyzed and then we structure sequential executive modules into concurrent tasks. As a result of the analysis, control flow and dataflow diagram based on the RTSA notation is produced. This diagram is structured into concurrenttasks under the condition that performance problem is not serious. The criteria structuring concurrenttasks are introduced as Concurrent Design Approach for Real-Time System(CODARTS) by Gomaa.But structuring concurrent tasks using the criteria of CODARTS is somewhat difficult because thecriteria are dependent on designer's experience. CODARTS is an wide-range and abstractmethodology. As a result, the design can be inconsistent and peoples can understand it differently Inthis paper, we restructure the CODARTS methodology, propose a revised CODARTS structure andrepresent the task structuring steps for this new framework to overcome the understanding andinconsistency problems. The revised CODARTS framework and task structuring steps can be used toautomate the design of real time concurrent software systems. Finally, we show an example of taskstructuring in revised CODARTS framework.

Effects of diaphragm flexibility on the seismic design acceleration of precast concrete diaphragms

  • Zhang, Dichuan;Fleischman, Robert B.;Lee, Deuckhang
    • Computers and Concrete
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    • 제25권3호
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    • pp.273-282
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    • 2020
  • A new seismic design methodology for precast concrete diaphragms has been developed and incorporated into the current American seismic design code. This design methodology recognizes that diaphragm inertial forces during earthquakes are highly influenced by higher dynamic vibration modes and incorporates the higher mode effect into the diaphragm seismic design acceleration determination using a first mode reduced method, which applies the response modification coefficient only to the first mode response but keeps the higher mode response unreduced. However the first mode reduced method does not consider effects of diaphragm flexibility, which plays an important role on the diaphragm seismic response especially for the precast concrete diaphragm. Therefore this paper investigated the effect of diaphragm flexibility on the diaphragm seismic design acceleration for precast concrete shear wall structures through parametric studies. Several design parameters were considered including number of stories, diaphragm geometries and stiffness. It was found that the diaphragm flexibility can change the structural dynamic properties and amplify the diaphragm acceleration during earthquakes. Design equations for mode contribution factors considering the diaphragm flexibility were first established through modal analyses to modify the first mode reduced method in the current code. The modified first mode reduced method has then been verified through nonlinear time history analyses.

프로덕트 모델 중심의 설계, 시공 정보 통합 방법론 (A Product Model Centered Integration Methodology for Design and Construction Information)

  • 이근형;김재준
    • 한국건설관리학회:학술대회논문집
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    • 한국건설관리학회 2002년도 학술대회지
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    • pp.99-106
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    • 2002
  • 최근 건설 정보 통합 모델에 설계 요소를 반영하는 개념이 발표되고, 4D CAD 시스템을 이용한 정보 통합에 대한 연구들이 수행되었으며, 현재까지 그 활용분야를 넓히고 있다. 하지만, 이러한 형태의 정보통합은 특정 응용 프로그램을 중심으로 이루어지기 때문에 각 조직만의 독특한 내용적 특성을 반영할 수 없으며, 기존의 프로그램과 다른 새로운 프로그램의 도입 및 개발에 따른 유지, 보수 비용을 요구하는 등의 단점이 있다. 본 연구에서는 이러한 문제들을 해결하기 위하여 정보통합을 위한 새로운 접근 방법으로써 '프로덕트 모델 중심의 설계, 시공 정보 통합 방법론'을 제시하고 이에 대한 비교 평가를 위하여 기존의 방법론에 대한 선행 연구를 수행하였다. 이를 위하여 현재 설계, 공정 정보의 통합을 위하여 널리 사용되고 있는 4D CAD 개념을 조사, 분석하였다. 연구 분석 결과 기존의 통합 방법론은 여러가지 장점이 있었지만, 전체 건설사업의 생애주기 중 후반부에 통합이 이루어지기 때문에 정보 활용의 기회가 적으며, 후속단계에서 원시정보의 활용이 미흡하고, 통합 정보의 활용 범위가 상용프로그램이 제공하는 기능으로 제한되고, 3차원 프로덕트 모델에 대한 관리가 곤란하였다. 이러한 단점을 해결하기 위한 설계, 시공 정보의 통합을 위한 새로운 방법론을 제시하였다. 제안된 방법론은 '일관된 객체 기반의 그래픽 모델링', '이질적인 프로덕트 정보들의 저장', '프로덕트 모델을 활용한 정보의 생성, 통합', '확장된 프로덕트 모델의 관리' 등의 4 부분으로 나누어서 제안하였으며, 마지막으로 이들에 대한 활용 개념을 기존의 업무에서의 활용과 새롭게 보충되는 업무에서의 활용으로 나누어서 제안하였다. 6장에서는 본 논문의 전체적인 요약과 후속 연구 주제들과 이를 위한 제안을 하였다. 본 연구를 통해서 특정 응용프로그램 중심의 통합이 아닌 프로덕트 모델 중심의 설계, 시공정보 통합을 위한 새로운 통합 방법론을 제시하였으며, 본 방법론을 통해서 실제로 사용하고 있는 프로그램들을 활용하면서, 각 조직의 환경에 적합한 정보 통합을 통해 건설 생산성 향상을 기대할 수 있게 되었다.

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반응표면법을 이용한 집중권선 동기 릴럭턴스 전동기의 토크 리플 저감에 관한 회전자 및 고정자 설계 (Rotor & Stator Design on Torque Ripple Reduction for a Synchronous Reluctance Motor with Concentrated Winding using Response Surface Methodology)

  • 최윤철;이중호
    • 전기학회논문지
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    • 제56권12호
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    • pp.2145-2149
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    • 2007
  • This paper deals with optimum design criteria to minimize the torque ripple of a concentrated winding Synchronous Reluctance Motor (SynRM) using Response Surface Methodology (RSM). The feasibility of using RSM with the finite element method (FEM) in practical engineering problem is investigated with computational examples and comparison between the fitted response and the results obtained from an analytical solution according to the design variables of stator and rotor in concentrated winding SynRM (6slot).

GSI(Global Single Instance)기반의 Global ERP 구축 방법론 및 적용 사례 (A Methodology for Global ERP Implementation Based on GSI(Global Single Instance) and Its Application)

  • 이재광;조민호
    • 한국IT서비스학회지
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    • 제7권3호
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    • pp.97-114
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    • 2008
  • Many companies have implemented ERP systems to enhance their process competitiveness. Since most ERP systems down to date are implemented and managed on each separated business-unit or company level, such systems run short of the consideration about global business processes and global system managements. In order to integrate a successful global ERP, it is essential to apply the well-systematic implementation methodology which considers global standardization and global IT requirements. It is, however, the actual circumstance that such well-structured methodologies for global ERP implementation are hardly shown not only from domestic site but from foreign one. This paper indicates the global ERP implementation guideline with integrated approach including; the standard process design for efficient execution of global business; the ERP implementation method considering global IT requirements; and, the management method for global system operation. GSI ERP methodology is composed of 3 Phase:Global Strategy Planning, Global Template Construction and Global Roll-Out. Phase1; Global Strategy Planning contains Environment Analysis, GSI direction and Implementation Plan. Phase2; Global Template Construction contains Business blueprint, GSI operation design and Global template implementation. Phase3; Global Roll-out contains local business analysis, local ERP implementation and Global ERP Operation.

Desirability Function Modeling for Dual Response Surface Approach to Robust Design

  • Kwon, You Jin;Kim, Young Jin;Cha, Myung Soo
    • Industrial Engineering and Management Systems
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    • 제7권3호
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    • pp.197-203
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    • 2008
  • Many quality engineering practitioners continue to have a considerable interest in implementing the concept of response surface methodology to real situations. Recently, dual response surface approach is extensively studied and recognized as a powerful tool for robust design. However, existing methods do not consider the information provided by customers and design engineers. In this regard, this article proposes a flexible optimization model that incorporates that information via desirability function modeling. The optimization scheme and its modeling flexibility are demonstrated through an illustrative example by comparing the proposed model with existing ones.

자동차용 타이어 단면형상의 최적설계 방법론 (Optimal Design Methodology of Automotive Tire Profile)

  • 황준;남궁석
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 1996년도 추계학술대회 논문집
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    • pp.896-900
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    • 1996
  • New approach to determine the optimal design of automotive tire profile was introduced. In this study, optimal design technology was combined with a finite element method. Through tire profile optimization, tire profile was obtained and its profile improved high speed durability and maneuverability Static and dynamic behavior analysis of new concepted tire was compared with conventional tire profile. Optimal design methodology will provide much informations to improve various tire performances.

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Estimating Non-Ideal Effects within a Top-Down Methodology for the Design of Continuous-Time Delta-Sigma Modulators

  • Na, Seung-in;Kim, Susie;Yang, Youngtae;Kim, Suhwan
    • JSTS:Journal of Semiconductor Technology and Science
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    • 제16권3호
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    • pp.319-329
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    • 2016
  • High-level design aids are mandatory for design of a continuous-time delta-sigma modulator (CTDSM). This paper proposes a top-down methodology design to generate a noise transfer function (NTF) which is compensated for excess loop delay (ELD). This method is applicable to low pass loop-filter topologies. Non-ideal effects including ELD, integrator scaling issue, finite op-amp performance, clock jitter and DAC inaccuracies are explicitly represented in a behavioral simulation of a CTDSM. Mathematical modeling using MATLAB is supplemented with circuit-level simulation using Verilog-A blocks. Behavioral simulation and circuit-level simulation using Verilog-A blocks are used to validate our approach.

아키텍처기반 설계 방식에 대한 평가기능이 통합된 소프트웨어 설계 방법론 (A Software Design Methodology Integrating Evaluation Method of Architectural Design Approaches)

  • 고현희;궁상환;박재년
    • 한국정보과학회논문지:소프트웨어및응용
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    • 제34권7호
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    • pp.625-634
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    • 2007
  • 소프트웨어가 대형화되고 복잡해짐에 따라 소프트웨어 아키텍처의 설계가 성공적인 프로젝트를 위한 중요한 이슈가 되었다. 아키텍처 설계의 기반이 되는 아키텍처 접근법 선정은 아키텍처 설계와 후속설계 작업의 성공을 위해 무엇보다 중요하다. 본 연구에서는 아키텍처 접근법 대안들을 설계단계에서 식별하고 시스템의 품질 속성을 만족시키는 아키텍처 접근법을 선정하기 위한 평가 방법과 평가 방법을 통합한 설계 방법을 제안함으로써 설계 산출물의 신뢰도를 높이고 재설계에 따른 비용의 절감 및 검증된 아키텍처 접근법을 기반으로 아키텍처 설계를 완성함으로써 후속 설계 작업의 성공을 높이고자 한다.