• 한국CDE학회논문집
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• 제20권1호
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• pp.75-83
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• 2015

In the virtual prototyping (VP) of digital products, it is important to provide the people involved in product development with the visualization and interaction of the products, and the simulation of their human machine interaction (HMI) behaviors in interactive 3D virtual environments. Especially, for the HMI behavior simulation, it is necessary to represent them properly and to play them back effectively according to user interaction in the virtual environments. In a conventional approach to HMI behavior simulation, user interface (UI) designers use UI design software tools to generate the HMI behavior of a digital product of interest. Due to lack of reusability of the HMI behavior, VP developers need to analyze and integrate it into a VP system for its simulation in a 3D virtual environment. As this approach hinders the effective communication between the UI designers and the VP developers, it is easy to create errors and thereby it takes significant time and effort especially when it is required to represent the HMI behavior to the finest level of detail. In order to overcome the shortcomings of the conventional approach, we propose an approach for representing the HMI behavior of a digital product using XML (eXtensible Markup Language) and for reusing it to perform the HMI behavior simulation in 3D virtual environments. Based on the approach, a VP system has been developed and applied for the design evaluation of various products. A case study about the design evaluation is given to show the usefulness of the proposed approach.

• 한국산학기술학회논문지
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• 제16권2호
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• pp.1381-1387
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• 2015

본 논문은 음악적 형태 생성을 위한 스케치 드로잉 시스템, 엠쉐이퍼 (이하 m-shaper)를 제안한다. 간단한 스케치 드로잉을 통해 사용자들은 컴퓨터로 바로 연주가 가능한 음악적 형태를 구성할 수 있다. m-shaper는 드로잉 특징을 규정하는 변수를 획득하고 이를 이용하여 음표와 형태를 제작한다. 타블렛을 이용하여 4가지 스케치 움직임 정보, 압력, 회전각도, 기울기 각도, 속도 정보를 감지한다. 형태를 구성하는 각각의 점은 악기 종류, 음길이, 음높낮이, 옥타브를 표현하는 특정음표에 매핑된다. 현재 m-shaper 시스템은 디자인 초기단계를 지원하는 컴퓨터 연산도구로 개발되었다. 디자이너는 음악적 영감을 받으며 기하학적인 스케치를 그리고 개념 형태를 탐색할 수 있다. 디자이너들은 관련 제어값을 조절하면서 결과물을 조절하고 스케치 드로잉을 변형할 수 있다.

• 한국산학기술학회논문지
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• 제11권12호
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• pp.5023-5028
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• 2010

본 논문에서는 LED 전광판 그래픽 디자인이 전문디자이너에 의존하기에 야기되는 고비용 구조의 문제를 해결하기 위해 이미지기반 LED 디자인 시뮬레이터를 제안한다. 현재 LED 시뮬레이터는 텍스트 처리하거나 미리 정의된 심볼을 설계하는 수준 정도에 그치고 있는 실정이다. 따라서 히스토그램 평활화와 bicubic 보간법을 포함하는 영상 필터링 기술을 이용하여 형상을 모델링하고, 컬러매핑, 효과 기능을 추가하여 재생가능한 LED 디자인 시뮬레이터 개발하였다. 시스템의 성능평가를 위해 효과별 실행시간 평가와 카테고리별 다양한 실험결과를 제시하였다.

• 한국산학기술학회논문지
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• 제2권2호
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• pp.101-106
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• 2001

사출성형 제품 및 금형설계를 위한 통합형 CAD시스템이 연구되었다. 현존하는 CAD시스템은 주로 기하학적 모델링 기능만을 제공하고 있으나 본 연구에서는 제품설계, 금형설계, 몰드베이스 선정, 공정설계를 통합하여 설계할 수 있도록 CAD/CAPP/CAE를 연계한 설계시스템을 구성하였다. 특징형상 기법을 비롯하여 다양한 방법론이 시스템 구성을 위해 연구되었다. 이러한 통한형 설계시스템은 동시설계를 위해 유용하게 사용될 수 있는 진전된 개념의 설계시스템이다.

• 대한산업공학회지
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• 제21권1호
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• pp.17-32
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• 1995

The objective of this study is to develop a general design and performance evaluation model for the system designers in the initial design phase of the integrated automatic manufacturing system based on the RAM(Reliability, Availability and Maintainability) and life cycle cost(LCC). The methodology proposed in this research includes the following two stages. First, a deterministic approach to the solution of optimal work station arrangement for the initial system configuration is considered under the assumption that the system availability is one(no failure and maintenance), and then a stochastic simulation model based on RAM and LCC is developed. Using the results of these two stage simulation, a system performance index(SPI) was developed for the performance evaluation of the proposed system. Also a computer program is developed.

• 한국가구학회지
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• 제21권3호
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• pp.205-215
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• 2010

The professional alliance between disciplines of architecture and furniture design in the interwar years as displayed in the prominent architectural exhibitions of the era is interesting in the context of professionalization of American architecture. The way furniture design gradually became part of the architectural shows not only reflected but provided the practical field in which the architectural institution sought, under the new social order since the mid 1910s, a new professional cast-departing from the former milieu in the realm of high-art by the Beaux-Arts Movement. Exhibitions held by the Architectural League of New York in the 1920s revealed that the early impetus for reformation toward efficiency had been subsumed by the system of Beaux-Arts. By contrast, "The Architect and the Industrial Arts" show of the Metropolitan Museum of Art, in which the most prominent architects of the era exercised their professional expertise in the design of "Moderne Style" interior furnishings, clearly shows how architects, in the milieu of expanding commercial market, sought to align their profession as industrial designers.

• 대한산업공학회지
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• 제13권2호
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• pp.17-34
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• 1987

Modern telecommunication switching systems are SPC (Stored Program Control) machines handling voice, data and other kinds of traffic, in an environment which tends to be fully digital switching and transmission. The throughput of such systems is determined by the real time capacity of its centralized or distributed control processors and by the traffic capacity of the switching network. Designers must verify the traffic and call processing capacity of the switching system and check its performance under traffic load before it is put into service. Verification of traffic and call processing capacity of switching systems is one of the problems treated by teletraffic studies; teletraffic studies are based on stochastic process, queueing theory, simulations and other quantitative methods of decision making. This paper reviews the general methodologies to evaluate the throughput and performance of the digital switching system. TDX-10, which is a fully digital switching system under development in ETRI, is employed to give illustrative examples of the methodologies discussed in this paper.

• 산업공학
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• 제16권spc호
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• pp.45-48
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• 2003

Entity-relationship modeling for designing relational database is a very complicated thinking process that requires extensive knowledge and experiences. It is very likely that designers make mistakes in this process. In order to minimize the mistakes, a systematic method to guide the thinking process is needed. In this research, an entity-relationship modeling system is developed, which resolves the whole process of information modeling, data modeling, and functional dependency relationship analysis into small and simple decision-making steps. Therefore, it can reduce the possibility of making decision errors and improve the efficiency of the modeling process. It's functionality and efficiency is verified through some modeling examples. It is expected that the modeling system can be commercialized, if some functions are added, such as detection, warning, and correction of decision errors, and educational help.

• International Journal of CAD/CAM
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• 제2권1호
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• pp.69-75
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• 2002

This paper presents the development of an Intelligent Cavity Layout Design System (ICLDS) for multiple cavity injection moulds. The system is intended to assist mould designers in cavity layout design at concept design stage. The complexities and principles of cavity layout design as well as various dependencies in injection mould design are introduced. The knowledge in cavity layout design is summarized and classified. The functionality, the overall structure and general process of ICLDS are explained. The paper also discusses such issues as knowledge representation and case-based reasoning used in the development of the system. The functionality of the system is illustrated with an example of cavity layout design problem.

• 산업경영시스템학회지
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• 제34권4호
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• pp.138-144
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• 2011

The design flexibility and robustness have become key factors to handle various sources of uncertainties at the early phase of design. Even though designers are uncertain about which single values to specify, they usually have a preference for certain values over others. In the first and second reports of a four-part paper, a set-based design approach has been proposed for achieving design flexibility and robustness while capturing designer's preference, and its effectiveness has been illustrated with a simple vehicle side-door impact beam design problem. This report presents the applicability of the proposed design approach to the large-scale multi-objective design optimization with a successful implementation of real vehicle side-door structure design.