• Journal of Information Technology Applications and Management
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• 제9권1호
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• pp.85-96
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• 2002

Nowadays an information exchange on XML such as B2B electronic commerce is spreading. Therefore the systematic and stable management mechanism for storing the exchanged Information is needed. For this goal there are many research activities for connection between XML application and relational database. But because XML data have hierarchical structures and relational database can store only flat-structured data, we need to store XML data in object-oriented database that support hierarchical structure. Accordingly the modeling methodology for storing XML data in object-oriented database is needed. In order to build good quality application systems, modeling is an important first step. In 1997, the OMG adopted the UML as its standard modeling language. Since industry has warmly embraced UML, its popularity should become more important in the future. So a design methodology based on UML is need to develop efficiently XML applications. In this paper, we propose a unified design methodology for XML applications based on object- oriented database using UML. To this goal, first we introduce a XML modeling methodology to design W3C XML schema using UML and second we propose data modeling methodology for object-oriented database schema to store efficiently XML data in object-oriented databases.

• 한국기계가공학회지
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• 제7권1호
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• pp.53-61
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• 2008

In this research, the layout and geometry of U-type ribs in the part, including significant process conditions, are automatically optimized to reduce part warpage with robustness in consideration. The optimization procedure are based on an iterative redesign methodology integrated with computer aided injection molding simulation, Taguchi's Design of Experiment(DOE), and a direct search-based optimization method. The robustness of a design alternative is efficiently measured by introducing composite noise factor and Taguchi's signal-to-noise ratio. As a solution search methodology, the modified design space reduction method based on orthogonal arrays is employed to exploit an optimal robust design alternative. To illustrate the proposed methodology, a case study is performed on simulation results, where an optimal robust design alternative is obtained with a moderate number of iterations.

• 한국전자거래학회지
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• 제4권1호
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• pp.37-58
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• 1999

In this paper, we suggest the system analysis method that links IDEF0 and conceptual analysis. Based on the method, we propose the implementation methodology that can be used to build CALS/EC systems in logistics industry. This paper presents data characteristic derived using ICAM DEFinition(IDEF0) and conceptual data modeling. Modeling methodology has been widely used for analysis and design of an enterprise information system. Further IDEF has been considered appropriate for developing functional and database models for the logistics environment.

• 디자인학연구
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• 제19권5호
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• pp.105-118
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• 2006

디자인사의 일반적인 관점에 따르면, 디자인 방법론은 모더니즘 디자인과 관계 속에서 해석되곤 한다. 본 논문은 제 2차 세계 대전 이후 군사 전략.테크놀로지의 연구 과정에서 성장한 사이보그 과학과의 관계에 초점을 맞춰, 디자인 방법론의 전개 과정을 고찰하고자 한다. 특히 그 관계는 크게 두 가지로 정의될 수 있다. 하나는 군사적인 연구 개발 프로젝트를 통해 정립된 오퍼레이션 리서치, 시스템 분석, 시스템 엔지니어링과 같은 시스템 과학이, 디자인의 과학화를 구호로 내걸었던 초기 디자인 방법론 운동에 의해 전유되는 과정이며, 다른 하나는 랜드 연구소를 근거지로 삼아 허버트 사이먼이 개진했던 "문제해결" 과 "인공지능"에 대한 이론들이 시스템 과학 이후의 디자인 방법론의 이론적 전개에 영향을 미치는 과정이다. 본 논문은 방법론 운동이 이와 같은 사이보그 과학과의 관계를 통해, 디자인 프로세스를 자본주의의 생산-소비 사이클의 피드백 루프로, 즉 시장의 보이지 않는 손을 가시화하는 정보 처리 과정으로 재정의 되는 과정을 살펴본다.

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2005년도 추계 학술발표대회 논문집
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• pp.16-17
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• 2005

• 전자공학회논문지C
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• 제36C권11호
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• pp.55-63
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• 1999

본 논문에서는 패키지의 전기적 특성이 CMOS 디지틀 회로에 미치는 영향을 해석하고 패키지 특성을 고려한 새로운 CMOS It 패키지 설계방법을 보인다. 집적회로 내의 게이트들이 동시에 스위칭 할 때 패키지에 기인한 동시 스위칭 노이즈 (Simultaneous Switching Noise: SSN)가 시스템의 성능에 미치는 영향에 대하여 해석적으로 고찰하여 패키지의 전기적 특성에 의한 제약조건을 만족시키면서 집적회로 패키지를 설계 할 수 있는 새로운 설계 식을 유도하고 이들 식을 이용한 설계방법을 제시한다. 또한 제시된 패키지 설계방 법의 타당성을 검증하기 위하여 0.3㎛ CMOS 회로에 대하여 범용회로 시뮬레이터인 HSPICE 시뮬레이션 결과와 본 논문에서 제시한 해석적 설계 방법에 따른 결과가 일치한다는 것을 보인다.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2013년도 춘계학술대회 논문집
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• pp.373-378
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• 2013

Impact wrench has a sophisticated structure to implement various pre-designed mechanisms with specific functions. In the structure of impact wrench, the gear box has an important role to generate impacting force of anvil from actuating torque. Since, it requires to design systematically the gear box for accurate mechanism of operation and transferring motions. In this paper, a methodology of dynamic analysis, which is useful to design mechanical system, is proposed and applied to impact wrench, sequentially. At first, the way to perform dynamic analysis for design, which is progressed from component to assembled system, is introduced. Secondly, the proposed methodology is applied to designing impact wrench. Eventually, the results of parameter study with proposed methodology are applied to actual design for design optimization. And optimized-design is evaluated in the view of accurate operation and structural stability.

• Journal of Computing Science and Engineering
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• 제2권4호
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• pp.340-356
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• 2008

The cognitive constraints of the human mind must drive the decisions in architecture and methodology design in order that the systems we build are comprehensible. This paper presents a methodology for the design of time-triggered embedded systems that leads to understandable artifacts. We lift the design process to a higher level of abstractionto the level of computational components that interact solely by the exchange of messages. The time-triggered architecture makes it possible to specify the temporal properties of component interfaces precisely and provides temporally predictable message communication, such that the precise behavior of a large design can be studied in the early phases of a design on the basis of the component interface specifications. This paper shows how the cognitive simplification strategies of abstraction, partitioning and segmentation are supported by the time-triggered architecture and its associated design methodology to construct evolvable embedded systems that can be readily understood and modified.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 1995년도 봄 학술발표회 논문집
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• pp.176-183
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• 1995

The design process of pre-cast concrete member needs various design parameters and the engineer's experiences. The introduction of knowledge-based system in the design of pre-cast concrete member enables us to design complicated members using the designer's heuristics. The objectives of this research are to study useful methodology for representing knowledge and data in the development of knowledge-based system and to show the application of methodology by developing a prototype sysytem for design of pre-cast concrete member. This paper nrst describes methodology for building knowledge-based system. It then presents knowledge-based system for pre-cast concerete member design.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2008년도 추계학술대회 논문집
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• pp.13-14
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• 2008