• Title/Summary/Keyword: Design & Development Research

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A new model for transient heat transfer model on external steel elements

  • Chica, J.A.;Morente, F.
    • Steel and Composite Structures
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    • v.8 no.3
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    • pp.201-216
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    • 2008
  • The Eurocode system provides limited information regarding the structural fire design of external steel structures. Eurocode 1 provides thermal action for external member but only in steady-state conditions. On the other hand, Eurocode 3 provides a methodology to determine heat transfer to external steelwork, but there is no distinction in cross section shapes and, in addition, the calculated temperature distribution is assumed to be uniform in the cross section. This paper presents the results of a research carried out to develop a new transient heat transfer model for external steel elements to improve the current approach of the Eurocodes. This research was carried out as part of the project EXFIRE "Development of design rules for the fire behaviour of external steel structures", funded by the European Research Programme of the Research Fund for Coal and Steel (RFCS).

Development of the Automatic Design System for Hydraulic Gate (취수 갑문 설계 자동화 개발)

  • Lee, Hoo-Gwang;Choi, Jae-Seung;Hwang, Suk-Hwan
    • Journal of the Korean Society for Precision Engineering
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    • v.18 no.6
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    • pp.127-132
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    • 2001
  • An automatic design system for a hydraulic gate has been developed to cut down the time for the design calculation and to optimize its design. It is oriented to the radial gate which is the simplest, most reliable, least expensive and most widely used hydraulic gate. This system is composed of data input, strength computation and result display modules with databases of the properties of components and materials. In this development, the existing intricate design procedure has been changed to the straightforward procedure without assumption of weight. With this code, the design time of the radial gate could be reduced below one thirtieth in comparison with manual work and the optimum design could be accomplished easily.

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Determination of Design Parameters from Ground Investigation Results -Focus on geotechnical characteristic values- (지반조사결과에서 설계변수의 결정문제 -지반특성치 산정을 중심으로-)

  • Yoon, Gil-Lim;Yoon, Yeo-Won;Kim, Hong-Yeon
    • Proceedings of the Korean Geotechical Society Conference
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    • 2008.10a
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    • pp.126-133
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    • 2008
  • Geotechnical limit state design methods; LRFD of North America is an approach that estimates resistance using design model and then multiplies resistance factor by calculated resistance to reflect the uncertainty of geomaterials and design models; whereas, Eurocode of the Europe employs the partial resistance factor applied directly to each variable in the resistance equation that individual soil properties such as cohesion and angle of internal friction are applied. This discussion paper is a study on characteristic value which has globally been argued through processing of development of Eurocode 7 for geotechnical design even to the present. Estimating the characteristic value of soil properties affects not only determination of design value applied directly to design of geotechnical structures, but also economic feasibility and stability of the structures.

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Optimum Design of New Type Offshore Wind Power Tower Structure (신형식 해상풍력 구조체 최적 설계)

  • Han, Taek-Hee;Yoon, Gil-Lim;Won, Deok-Hee;Oh, Young-Min
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2012.06a
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    • pp.388-389
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    • 2012
  • Current offshore wind power towers are made of steel. As the capacity of wind power increases, the tower structures become higher. Steel structures have buckling problem and their increased slenderness ratios make them weak against buckling and vibration. In this study, double skinned composite tubular (DSCT) offshore wind power tower was proposed and its optimum design method was suggested. Fiber reinforced polymer (FRP) and steel were considered as material of the tubes. And both materials satisfied the required capacity.

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Integrated Product Design Development

  • Cho, Moon-Soo;Song, Joon-Yeob
    • Journal of the Korean Operations Research and Management Science Society
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    • v.22 no.4
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    • pp.81-92
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    • 1997
  • The terminology such as ecology, environment problems, ecosystems, ecofactory, and others related to environmental problems have been recently used in manufacturing systems, since the modern industries have to consider a global ecological crisis. The indifference of recent environmental problems which may be faced now has been paid attention to all engineering areas. In this paper, manufacturing functional requirements such as disassembly, disposal, disposal, or recycling are considered in the integrated product design development, which have not been considered well in the preliminary design stage. Those functions will contribute to reduce the waste and to long the product life cycle, which also satisfies the business benefits and customer requirements. The concurrent design concepts should be applied to integrate all possible factors. Therefore, few practical concurrent engineering tools are presented in here. The objective of this paper is to develop a called green manufacturing systems for integrated product design development by concurrent design concept which can give the desirable result in product design.

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Development of Korean Fashion Design for the World Market (세계시장을 위한 한국적 패션디자인의 개발)

  • 공미선;채금석
    • Journal of the Korean Society of Costume
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    • v.54 no.2
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    • pp.1-9
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    • 2004
  • This research aims at the development of Korean fashion design for the world market, which combines the western beauty and Korean tradition into the product design focusing on the styling concept. Through the example-analysis of structural elements which form Europe and Korean fashions, the styling concepts of functional change, beauty-combination, and tradition-conservation. are derived. The results are as follows : 1. Functionality needs to be improved by the structural change and the development of new materials from the traditional materials. 2. Beauty should come from the combination of natural patterns and western-spatial allocation, as well as from the front combination of western-beauty. 3. Tradition needs to be kept as Korean beauty and representation skills in the colors, accessaries, and in the spatial design. The styling concept for Korean fashion design in this research is related to the visual structural elements, and is not expanded to the styling concept of Korean image and/or feeling. Therefore future researches may follow on these un-expanded points. and also may continue the wide comparison between the Korean fashion design and oriental image fashion in Europe.

A Case Study of Enhancing Flame Retardancy of Mixture Material (혼합물 소재의 난연성 향상을 위한 실험연구 사례)

  • Byun, Jai-Hyun;Jung, Chun-Sik;Kim, Donghak;Park, Kyu-Hwan
    • Journal of Korean Society for Quality Management
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    • v.47 no.3
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    • pp.631-639
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    • 2019
  • Purpose: In this paper we present a case study of applying quick and easy experimental design approach to develop a Halogen free flame retardant material for cellular phone charger cable. Methods: We employ sequential experimentation of mixture design, verification design, and factorial design. A quick and easy approach is adopted based on data investigation and graphical method instead of strict statistical analysis, which helped enhancing smooth communication with the engineers and speeding up the development process. Results: Flame retardant material in pellet type produced from the optimal condition is transported to the customer and tested, to pass the customer retardancy criteria. Conclusion: The quick and easy experimental design approach is considered to be useful in this case study.

Development of Instructional Activity Support Model for Capstone Design to Creative Engineering Education (창의적 공학교육을 위한 캡스톤 디자인(Capstone Design) 교수활동지원모형 개발)

  • Park, Su-Hong;Jung, Ju-Young;Ryu, Young-Ho;KIM, Seong-Ok
    • Journal of Fisheries and Marine Sciences Education
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    • v.20 no.2
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    • pp.184-200
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    • 2008
  • The purpose of this paper is to develop instructional activity support model for capstone design in order for improving creative engineering education. To do this, having extracted the core idea of capstone design, and elicited core learning activity process, and grasped core supportive factors according to each core learning activity process that elicited, an improved instructional design model for capstone design was then developed through formative evaluation with respect to the draft of the instructional system development model for capstone design. As to major research methods, case analysis, requirements analysis through interview, and formative evaluation by experts were employed, and then research studies were undertaken. The formative evaluation by experts was carried out for two hours in 2007, and the experts participated in the evaluation consisted of total 6 persons: two specialists of capstone design contents, two professionals in field works, and two expert instructional designers in education engineering. Interview results had been reflected in this research when developing final instructional design model for capstone design. The core learning activity process of the final instructional design model for caption design, which developed in this research, comprises following stages: (1) Team building $\rightarrow$ (2) Integrated meeting between industry and academy $\rightarrow$ (3) Analysis of tasks $\rightarrow$ (4) Clarification of tasks $\rightarrow$(5) Seeking solutions for issues $\rightarrow$ (6) Eliciting priority of solutions $\rightarrow$ (7) Designing solutions and construction $\rightarrow$ (8) Exhibiting outcomes and presentation $\rightarrow$(9) Gaining comprehensive insights Also, in the core learning activity process, supportive factors that support implementation of each step were presented having been categorized into facilitator (teacher, and professionals in field works), learner and tool, etc.

The Distribution of Research Framework on Exsheetlink Module Development for Accounting Education

  • Nor Sa'adah, JAMALUDDIN;Rohaila, YUSOF;Noor Lela, AHMAD
    • Journal of Distribution Science
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    • v.21 no.2
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    • pp.45-52
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    • 2023
  • Purpose: The Malaysia Education Blueprint is primarily concerned with the transformation of students' minds through the curriculum offered at the school level (2013-2025). Diversity in the application of teaching and learning methods is one means of achieving the transformation of students' minds through the Secondary School Standard Curriculum. Consequently, the production of ExSheetLink's Module for Accounting Education is the primary outcome of this study, which had three objectives: the need for ExSheetLink's Module in the process of producing financial statements for Accounting Students in secondary school to the Accounting Teacher; and the design of ExSheetLink's Module that meets the entire process in the production of financial statements for Accounting Students in secondary school based on the Documents Curriculum and the Accounting Students' needs. Research design, data and methodology: This study outlines the research framework for module development in accordance with the Design and Development Research Method, which combines multiple research techniques (Mixed Method). Results: The development of ExSheetLink's Module is completed and can be used for the level of effectiveness purposes. Conclusion: The transformation of Accounting Students' minds is a success thanks to the ExSheetLink Module. Researchers also suggested that all Malaysian Secondary School accounting students test the ExSheetLink Module.

Research about muscle ache curer design development for hospital (병원용 근육통증 치료기 디자인 개발에 관한 연구)

  • Oh, Sung-Jin
    • Proceedings of the Korea Contents Association Conference
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    • 2006.11a
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    • pp.856-859
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    • 2006
  • Patient's position who muscle ache curer for hospital undergoes person entrance and treatment that take advantage of biological, physical force of low frequency and it is equipment that treat body muscle ache, but use equipment when use patient into compensation in hospital specially, that consider everybody is important first of all. This research question investigation with market survey of old product enforce because preference degree reflected officer a result and apply opinion tuned with product development connection engineers on DESIGN direction via typical product design development process close. This curer development research analyzed data involved directly taking advantage of FGI techniques with literature investigation collection. Investigation examined laying stress on muscle ache curer for hospital and a nurse than a doctor answered on question and purchase selection criterion or price portion to user focus. Direct market survey research that see item indicated by competition four provision shortcomings consequently in NEW MODEL development hereafter supplement and expectation. by contributing greatly in M/S security strategy hereafter because design development consisted for side that improve.

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