• 대한산업공학회지
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• 제19권2호
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• pp.119-132
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• 1993

This paper deals with the development of an expert process design system interfaced with CAD for porismatic parts in injection mold manufacture. The developed CAD/CAPP system consists of two modules such as CAD interface module and process design module. Parts are represented using AutoCAD system on the IBM PC/AT. CAD interface module recognizes form features and manufacturing features of the part using form feature recognition algorithm and manufacturing feature recognition rule base. Process design module selects operations and determines machine tools, cutting tools and operation sequencing by using knowledge base which is acquired from expert process planners. A case study is implemented to evaluate feasibilities of the function of the proposed system. The CAD/CAPP system can improve the efficiency of process design activities and reduce the time required for process design.

• 대한기계학회논문집A
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• 제35권2호
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• pp.183-190
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• 2011

최근 이동통신 가입자의 증가로 인해 기지국의 수요도 증가하게 되었다. 하지만 기지국 설치 장소의 부족으로 인해 이동통신모듈의 크기가 소형화 되어야 할 필요성이 생겼다. 이동통신모듈의 소형화를 위해서는 모듈 겉면에 부착된 히트싱크의 크기가 소형화 되어야 한다. 또한 모듈의 열적 안정성을 보장하기 위해 설치된 전자부품의 온도가 허용온도보다 낮아야 한다. 이를 위해 상용 PIDO(Process Integration and Design Optimization) 툴인 PIAnO와 전산유체역학 프로그램인 FLOTHERM을 사용하여 전자부품의 온도를 허용온도보다 낮게 유지시키면서 히트싱크의 부피를 최소화하였다. 그 결과, 이동통신 모듈에 설치된 전자부품의 허용온도를 만족하면서 모듈의 부피를 41.9% 감소시킬 수 있었다.

• 한국CDE학회논문집
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• 제14권2호
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• pp.69-76
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• 2009

The development of a simulation system requires many sub modules such as a dynamic module, a visualization module, etc. If a different freeware is used for each sub modules, it is hard to develop the simulation system by incorporating them because they use their own data structures. To solve this problem, a high-level data structure, called Dynamics Scene Graph Data structure (DSGD) is proposed, by wrapping data structures of two freeware; an Open Dynamics Engine (ODE) for the dynamic module and an Open Scene Graph (OSG) for the visualization module. Finally, to evaluate the applicability of the proposed data structure, it is applied to the block erection simulation in shipbuilding. The result shows that it can be used for developing the simulation system.

• 한국산업정보학회논문지
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• 제19권2호
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• pp.51-58
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• 2014

As WSNs(Wireless Sensor Networks) are being deployed widely in diverse application areas, their management and maintenance become more important. Recent sensor node software takes modular software architectures in pursuit of flexible software management and energy efficient reprogramming. To realize an flexible and efficient modular architecture particularly on resource constrained mote-class sensor nodes that are implemented with MCUs(Micro-Controller Units) of a single address space. an appropriate module linking model is essential to resolve and bind the inter-module global symbols. This paper identifies a design space of module linking model and respectively their implementation frameworks. We then establish a taxonomy for module linking models by exploring the design space of module linking models. Finally, we suggest an implementation framework respectively for each module linking model in the taxonomy. We expect that this work lays the foundations for systematic innovation toward more flexible and efficient modular software architectures for WSNs.

• 마이크로전자및패키징학회지
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• 제9권1호
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• pp.15-20
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• 2002

본 연구에서는 Dual Band휴대폰 전화기의 핵심부품인 Dual Band PLL Module의 무선회로 설계 기술, 초소형 설계기술, 표면실장기술, 소형화 SMD기술, Test기술 및 설계기반 마련 및 대외 경쟁력 있는 Dual PLL Module의 초소형화 기술을 확보하였다.

• 한국강구조학회 논문집
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• 제25권5호
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• pp.509-518
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• 2013

본 연구는 지속가능한 구조설계 정보의 인터페이스 모듈의 개발에 관한 것으로 구조해석 S/W인 Midas/Gen과 BIM S/W인 Tekla Structures를 대상으로 한다. 모듈의 개발은 기존 연구의 내용을 근간으로 기능과 적용성을 개선하였다. 기존 연구에서 모델 정보를 양방향으로 교환하는데 있어 기능적으로 문제가 없었지만, 구조해석모델과 실시설계 모델의 특성 차이로 적용성이 제한적이고 일회적이라는 문제점을 가지고 있었다. 본 연구에서는 기존 연구에서 발생하는 문제점을 분석하고, 그에 대한 해결책을 제시하였으며, 이를 반영하여 인터페이스 모듈의 적용성을 개선하고자 하였다.

• 한국에너지공학회:학술대회논문집
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• 한국에너지공학회 1998년도 추계 학술발표회 논문집
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• pp.3-8
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• 1998

The present work proposes the potential fuzzy framework, based on fuzzy set theory, for supporting decision-making problems, especially, selection problems of a best design in the area of nuclear energy system. The framework proposed is composed of the hierarchical structure module, the assignment module, the fuzzification module, and the defuzzification module. In the structure module, the relationship among decision objectives, decision criteria, decision sub-criteria, and decision alternatives is hierarchically structured. In the assignment module, linguistic or rank scoring approach can be used to assign subjective and/or vague values to the decision analyst's judgment on decision variables. In the fuzzification module, fuzzy numbers are assigned to these values of decision variables. Using fuzzy arithmetic operations, for each alternative, fuzzy preference index as a fuzzy synthesis measure is obtained. In the defuzzification module, using one of methods ranking fuzzy numbers, these indices are defuzzified to overall utility values as a cardinality measure determining final scores. According these values, alternatives of interest are ranked and an optimal alternative is chosen. To illustrate the applicability of the framework proposed to selection problem, as a case example, the best option choice of four design options under five decision criteria for primary containment wall thickening around large penetrations in an advanced nuclear energy system is studied.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2001년도 가을 학술발표회 논문집
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• pp.151-158
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• 2001

This paper describes an example of developing an integrated design system, Integrated Structural Design System for Reinforced Concrete Buildings(INDECON). INDECON incorporates a central database and three design modules: a preliminary design module(PDM), a structural analysis module(SAM), and a detailed design module(DDM). The development of INDECON begins with the development of design models including Design Object Model(DOM) which describes design data during the structural design process. The Design Object Model is transformed to Design Table Model(DTM) for the central database, and is specified to be in detail for the three design modules. Then the central database is implemented and managed by relational database management system(RDBMS), and the three design modules are implemented using C++ programming language. The central database in the server computer communicates with the design modules in the client computers using TCP/IP internet protocol. The developing procedure for INDECON in this paper can be applied for developing more comprehensive integrated structural design systems.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2013년도 춘계학술대회 논문집
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• pp.1135-1136
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• 2013

• 전력전자학회:학술대회논문집
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• 전력전자학회 2000년도 전력전자학술대회 논문집
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• pp.41-44
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• 2000

This paper represent about design of the controller for battery of a reflector of retaining wall for power supply using PV Module. Simulation is represents V-I and power characteristic by Mathematica & Design Cneter 6.3 & Qnet 2.1 Finally we composed of road surface-signpost system. This system is successfully operating with high clearness lights.