• Title/Summary/Keyword: integrated modeling methodology

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A Study on feature-based Design System for Mold and Moldbase (특징형상기법을 원용한 사출금형 설계시스템 연구)

  • 허용정
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.2 no.2
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    • pp.101-106
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    • 2001
  • The integrated design system for injection molding has been studied. The current CAD system do not provide mold designers with necessary function for CAD/CAPP/CAE interface except the geometric modeling capability. This paper describes a feature-based CAD system for mold and moldbase design which enables the concurrent design and CIM, with integrated design procedure, at the initial design stage of injection molding A new design methodology and resulting feature data files for this design system are also discussed.

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Object oriented generic cost modeling for integrated CAD system

  • Lee, Chang-Ho
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 1994.04a
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    • pp.715-725
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    • 1994
  • The objective of this research is to develop a cost model for integrated CAD system. A computerized system realizing this model then is used to aid designers. The first area is to propose a conceptual framework of a multilevel cost model. The methodology of constructing the model is discussed. Then suggestion of an object oriented programming technique for implementing the model is presented. Complicate estimation procedure can be systematically handled by this technique. Interval analysis to deal with the uncertainty of information and decision during design process is used. An experimentation algorithm for calculating the cost distribution is proposed to overcome the shortcoming of interval analysis. Major focus of this research is on net shape manufacturing processes including die casting, injection molding, and metal forming.

StateflowTD - A unified modeling Formalism of Stateflow and Timing Diagram (StateflowTD - Stateflow와 Timing diagram의 통합 모델링 방법론)

  • Lee, Hong-Seok;Chung, Ki-Hyun;Choi, Kyung-Hee
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.35 no.12B
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    • pp.1227-1235
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    • 2010
  • Stateflow is a useful system modeling tool, which is frequently used in industry. But Stateflow has defects when users are trying to describe consecutive behaviors or a system's temporal behaviors. Timing diagram, on the other hand, is a widely used tool of explaining behaviors of a hardware system in electronics. This tool has a merit when specifying consecutive behaviors and temporal behaviors of a system. Thus, this paper suggests $Stateflow_{TD}$, the unified modeling methodology in Stateflow domain integrating Stateflow with Timing diagram in order to improve the shortcomings of Stateflow. This paper not only explains a technique of integrating both a Stateflow model and Timing diagram models, and describes advantages of what $Stateflow_{TD}$ formalism has, but also shows its convenience using two example systems.

A Study on the Development of a Step Cutter with Hybrid Process of Drilling and Boring (드릴, 보링 공정복합형 스텝 커터의 개발)

  • Hwang, Jong Dae;Heo, Yun Nyoung;Oh, Ji Young;Jung, Yoon Gyo;Cho, Sung Lim
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.7 no.3
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    • pp.30-35
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    • 2008
  • As demands for being economical, precise drilling process is on the increase. Therefore, the objective of this study is to develop a step cutter that can be controllable through micro dimension and can be changed from separate manufacturing processes of drilling and boring into an integrated one. In order to attain this object the step cutter is designed with a 3D geometric modeling and the design could be modified easily by using parametric modeling methodology. Also, collision is not occurred during manufacturing process because of cutting simulation. The step cutter is assembled by parts made up of 5-axis machining and sintering. Validation tests are accomplished. They show that developed cutter has characteristics such as reduction of machining time as well as the good surface roughness of the machined hole. Indeed, reliability could be obtained from a durability test.

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A Study on Efficient Stock Arrangement of Distribution Center Using MBA Analysis and Simulation in Retail Business (유통업에서 MBA분석과 시뮬레이션을 이용한 물류센타 재고배치 효율화에 관한 연구)

  • Yeo, Sung-Joo;Seong, Kil-Young;Wang, Gi-Nam
    • IE interfaces
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    • v.22 no.3
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    • pp.234-242
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    • 2009
  • It is most important for distribution center in retail business to delivery commodities in a timely manner. Accordingly, many companies try to make distribution center effective using the Warehouse Management System(WMS) integrated legacy system. Also, the Customer Relationship Management(CRM) is the most typical paradigm in management lately. Even though the WMS and CRM are independent system of each other, WMS, coupled with CRM makes customer satisfied more effectively. In this paper, we proposed the methodology for inventory location after analyzing and applying customer buying pattern data in the CRM through the MBA(Market Basket Analysis), which is part of data mining. We used an example modeling a real distribution center in retail through a 3D simulation tool and examined correlation between commodities using customer buying pattern. After that, we applied it to the inventory location system through the MBA in an example. Finally, we identified decrease in the time for picking, which is the majority of distribution center. Besides, we proposed a simulation methodology before applying new methodology. Consequently, it removes potential errors in advance and makes a optimized inventory location system.

An Integrated Database of Engineering Documents and CAD/CAE Information for the Support of Bridge Maintenance (교량 유지관리 지원을 위한 CAD/CAE 정보와 엔지니어링 문서정보의 통합 데이터베이스)

  • Jeong Y.S.;Kim B.G.;Lee S.H.
    • Korean Journal of Computational Design and Engineering
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    • v.11 no.3
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    • pp.183-196
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    • 2006
  • A new operation strategy. which can guarantee the data consistency of engineering information among the various intelligent information systems, is presented for engineering information of bridges, and construction methodology of integrated database is developed to support the strategy. The two core standard techniques are adopted to construct the integrated database. One is the Standard for the Exchange of Product Model Data (STEP) for CAD/CAE information and the other is the Extensible Markup Language(XML) for engineering document information. The former enabler structural engineers to handle the structural details with three-dimensional geometry-based information of bridges, and ACIS solid modeling kernel is employed to develop AutoCAD based application modules. The latter can make document files into data type for web-based application modules which assist end-users to search and retrieve engineering document data. In addition, relaying algorithm is developed to integrate the two different information, e.g. CAD/CAE information and engineering document information. The pilot application modules are also developed, and a case study subjected to the Han-Nam bridge is presented at the end of the paper to illustrate the use of the developed application modules.

Utilization of Database in 3D Visualization of Remotely Sensed Data (원격탐사 영상의 3D 시각화와 데이터베이스의 활용)

  • Jung, Myung-Hee;Yun, Eui-Jung
    • Journal of the Institute of Electronics Engineers of Korea CI
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    • v.45 no.3
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    • pp.40-46
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    • 2008
  • 3D visualization of geological environments using remotely sensed data and the various sources of data provides new methodology to interpret geological observation data and analyze geo-information in earth science applications. It enables to understand spatio-temporal relationships and causal processes in the three-dimension, which would be difficult to identify without 3D representation. To build more realistic geological environments, which are useful to recognize spatial characteristics and relationships of geological objects, 3D modeling, topological analysis, and database should be coupled and taken into consideration for an integrated configuration of the system. In this study, a method for 3D visualization, extraction of geological data, storage and data management using remotely sensed data is proposed with the goal of providing a methodology to utilize dynamic spatio-temporal modeling and simulation in the three-dimension for geoscience and earth science applications.

Research on the type of technology convergence in the medical device industry based on topic modeling and citation analysis (토픽모델링과 인용 분석에 기반한 의료기기 산업의 기술융합 유형 연구)

  • Lee, Seonjae;Lee, Sungjoo;Seol, Hyeonju
    • Journal of the Korea Convergence Society
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    • v.12 no.7
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    • pp.207-220
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    • 2021
  • Industrial convergence is manifested in various forms by various drivers, and understanding and categorizing the direction of convergence according to the factors in which the convergence occurs is an essential requirement for the establishment of a company's customized convergence strategy and the government's corporate support policy. In this study, the type of convergence is analyzed from the perspective of knowledge flow between heterogeneous technologies, and for this purpose, the result of topic modeling of the text information of the patent and the citation information of the corresponding patent allocated for each topic are used. The methodology presented through case studies in the medical device field is verified. Through the proposed methodology, companies can predict the flow of convergence and use it as decision-making data to create new business opportunities. It is expected that the government and research institutions will be usefully used as basic data for policy preparation.

A Study on Probabilistic Reliability Evaluation of Power System Considering Solar Cell Generators (태양광발전원(太陽光發電原)을 고려한 전력계통(電力系統)의 확률논적(確率論的)인 신뢰도(信賴度) 평가(評價)에 관한 연구(硏究))

  • Park, Jeong-Je;Liang, Wu;Choi, Jae-Seok;Cha, Jun-Min
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.58 no.3
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    • pp.486-495
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    • 2009
  • This paper proposes a new methodology on reliability evaluation of a power system including solar cell generators (SCG). The SCGs using renewable energy resource such as solar radiation(SR) should be modeled as multi-state operational model because the uncertainty of the resource supply may occur an effect as same as the forced outage of generator in viewpoint of adequacy reliability of system. While a two-state model is well suited for modeling conventional generators, a multi-state model is needed to model the SCGs due to the random variation of solar radiation. This makes the method of calculating reliability evaluation indices of the SCG different from the conventional generator. After identifying the typical pattern of the SR probability distribution function(pdf) from SR actual data, this paper describes modelling, methodology and details process for reliability evaluation of the solar cell generators integrated with power system. Two test results indicate the viability of the proposed method.

THE WATERSHED MANAGEMENT AND ASSESSMENT USING GIS BASED ON HYDROLOGICAL AND LANDSCAPE ECOLOGICAL ANALYSIS

  • Lee, Ju-Young;Hopkins, James
    • Water Engineering Research
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    • v.7 no.1
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    • pp.9-20
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    • 2006
  • The watersheds are functional geographical areas that integrate a variety of environmental and ecological processes and human impacts on landscapes. Geographical assessments using GIS recognize the relationship between interdependence of resources and ecological/environmental components in watersheds. They are useful methodology for viable long term natural resource management. This paper performs through the using hydrological analyses, landscape ecological analyses, remote sensing, and GIS. Indicators are items or measures that represent key components of the small watersheds, and they are developed to be evaluated. Some indicators are described that they represent watershed condition and trend as well as focus on physical, biological and chemical properties of small watershed. Also, ecological functions such as stability, resilience, and sensitivity are inferred from them. The model implemented in GIS allows to reflect the ecological and hydrological functioning of watershed. Methodology from image analysis, landscape ecological analysis, spatial interpolation, and numerical process modeling are integrated within GIS to provide assessment for eco-logical/environmental condition. Results are described from the small watershed of Gwynns Falls in Baltimore County and Baltimore City, Maryland, an area of about 66.5 square miles. The small watershed within Gwynns Falls watershed are subject to a number of land-use. But it is predominantly urban, with significantly lesser amounts of forest and agriculture. The increasing urbanization is ass-coiated with ecological/environmental impacts and citizen conflicts.

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