• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2007.11a
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• pp.441-445
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• 2007

The mass housing supply policy of the government has resulted in the customer-centered market, and thereby the age of quality competition in the industry. In line with this trend of quality competition, therefore, this preliminary study aims to investigate the requirements of housing product planning to live up to the needs of customers in terms of quality, and thus analyze the types of quality differentiation of a housing product unit in our housing market. It turned out that many cases attempted differentiation in such ways as merely using luxurious finishing materials and instantly popular environment-friendly materials, and combining partial and limited household items with architectural elements of the facility system. The result of this study shows that the differentiation plan of housing product should be customer-centered, and therefore, focus on quality differentiation through organic combination of architecture-oriented plane and interior elements with technology-oriented facility and product elements. Hereby, in the future, housing product planning should include sustainable differentiation plans with reconsideration of concepts that customers have, and the needed procedure.

• Journal of Korean Institute of Industrial Engineers
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• v.41 no.5
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• pp.470-480
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• 2015

There are many challenges in manufacturing system for new factory construction. Although factories produce same product, the layout of each factory may be different. The body shop in an automotive factory is a typical flow line with assembly, but the layout concept of the line varies among factories. In this paper, two types of layouts in the body shops of automotive factories, one for layered build and the other for modular build, are compared using simulation study. The simulation experiments indicate that the modular build layout is better than the layered build layout with respect to production rate. The effects of various failure distributions on the throughputs are also investigated, and some insights are suggested regarding the layout concept.

• Journal of KIISE:Software and Applications
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• v.31 no.1
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• pp.43-53
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• 2004

Component-based development(CBD) has acquired a substantial acceptance in both academia and industry as an effective inter-organizational reuse technology. A component framework in product line engineering(PLE) which consists of related components, connectors and their semantics has a greater potential for reusability than components. In frameworks, components are glued with association, dependency and connections. Problems occur like affecting the implementation code of components when they are glued and replaced because the association and dependency relationships between COTS components which are acquired for application development do not match exactly. Especially, a connector may not only connect related components, but also mate partially-matched COTS components fit together. However, little has been studied to date about connectors that can be used practically. In this paper, we present a meta-model for connectors and show how a connector can be designed and implemented in practice. We propose five main patterns of connectors. Proposed major patterns Provide design guidelines for practical and efficient connector configuration based on component framework. And also, applying techniques and applied case studies of the major patterns show greatly increased applicability and reusability of the component without component modification.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.5
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• pp.3491-3498
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• 2015

The purpose of this study is to identify demand of fusion education in the field of architecture and urban, according to architecture and urban market changing, product changing, increasing fusion education demand. We conducted online surveys targeting construction and non construction field practitioners so that we want to identify consumer's needs about fusion education in the field of architecture and urban. Research findings can be summarized in three parts. First, practitioners need to fuse business-related majors (Frequency changing ratio : financing(716.7%), management(633.3%), planning(454.5%) etc.) and traditional majors. Second, the survey results show that 79 percent of those questioned were in favor of switching the cyber and off-line operation methods for fusion education. They require the complementary education system between off-line and cyber education based on education accessability. Third, the survey results show that 70.9 percent of those questioned were in favor of limited freestyle(Freedom of choices without required subjects). The curriculum should be arranged according to the flow of construction business process including fusion subjects.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10b
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• pp.319-321
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• 2004

제품 계열 공학(Product Line Engineering, PLE)는 패밀리 멤버들의 공통성과 가변성을 분석하여 만든 핵심 자산을 특화시켜 어플리케이션을 개발함으로써 재사용성과 이용가능성을 증대시키는 접근 방법이다. 핵심 자산은 제품 계열에 속하는 패밀리 멤버들이 어플리케이션을 만드는데 기초가 되는 모든 자산을 포함하며, 아키텍처, 컴포넌트 둥이 포함될 수 있다. 범용 아키텍처는 패밀리 멤버들이 공통적으로 사용할 수 있는 아키텍처로, 제품 계열에 속하는 제품들의 구조를 정의하고 컴포넌트의 인터페이스 명세를 제공하여 컴포넌트만큼 중요한 재사용 단위이다. 본 논문에서는 대표적인 PLE 방법론에서 정의한 제품 계열 아키텍처와 일반 소프트웨어 아키텍처를 비교하여 범용 아키텍처에 포함되는 요소들을 선정하고, 메타 모델을 이용하여 범용 아키텍처 구성요소와 구성요소간 관계를 명확히 정의함으로써, 개념적인 아키텍처를 보다 실용적으로 설계하는데 도움이 되게 하고자 한다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2006.05a
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• pp.291-292
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• 2006

Currently A demand of high precision workpiece is increasing in industry. At present, roundness measuring machine using Air bearing, coordinate measuring machine that are used from measurement station. but these machines will not be able to apply to In-line process. because of like these machine's price are very expensive and measurement time is long. also, the complexity of conventional roundness measurement method based on fourier transform, it makes difficult to development analysis program. This work present new architecture of a Out-diameter measuring system fur analysis of roundness of product. In this system, the influence of table motion errors is minimize by using two LVDT sensor and knife edge contact tip. We are produce a test machine and make an experimenter on Out-diameter of test bearing. The measurement result compared with roundness measuring machine.

• Journal of the Korea Furniture Society
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• v.20 no.5
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• pp.533-542
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• 2009

The space is generally the discontinuation space without being understood agreed by some people. In this time, expressing transparency has various significances in furniture design because modern people want transparence and space due to the complication, numerous unreasonable facts and the lack of honesty in the society. Philip Johnson's Glass House in 1946 influenced architecture, interior, furniture and life article to use transparent materials and space that is being until currently development. The transparency which comes to be preferred clearly means to develop the society continuously. It can be more liberal, honest, and transparent society. The trend appeared in furniture design has meaning as the representative product. This research has perceptional transparency(visible transparency), abstract transparency through space(phenomenal transparency), overlap of surface element, display of line element, image using dot, and changing the image of various spaces.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.1372-1375
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• 2011

프로덕트 라인 공학에서 프로덕트 라인 아키텍처는 가장 중요한 산출물 중에 하나이다. UML (Unified Modeling Language) 2.x 부터는 아키텍처를 모델링하기 위한 유용한 모델링 요소를 제공하고 있다. 이러한 UML을 이용하여 프로덕트 라인 아키텍처를 모델링하기 위해서는 가변성의 표현이 명시적으로 이루어져야 하지만, UML 자체에는 가변성을 표현하기 위한 방법 및 기법을 명시적으로 기술하고 있지 않다. 본 논문에서는 UML에서 제공하는 확장 메커니즘을 이용하여 가변성을 표현하는 방법을 제안한다. 즉, 모델링요소에 태그값(Tagged Value) 및 스테레오타입을 넣어주어 다양한 관점에서의 가변성을 표기하는 방법을 제안한다.

• Journal of KIISE:Software and Applications
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• v.34 no.4
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• pp.303-316
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• 2007

Even though many approaches for reuse have been introduced, software engineers are still hesitating to reuse existing software components. Among various reasons for the phenomena, the most significant one is that existing approaches failed to give substantial benefit for the reduction of developers' effort in reusing software assets. To solve this problem, we introduce a custom reuse model utilizing diverse aspects of components specified by RAS and services oriented architecture. We also carried out a case study to demonstrate its feasibility and evaluated it by comparing it to an existing code-based software reuse process. The proposed reuse model helps in the reduction of effort in reusing existing components by decreasing the time for searching and understanding them. Compared to other approaches such as product line engineering, our approach for software reuse using MPC does not require much initial work for implementing the reuse model in different projects. It is of interest to software engineers who are worried about heavy investment, which can cause the delay in their usual development work. Furthermore, the proposed reuse model is not mutually exclusive with other approaches for software reuse such as CBSD or product line engineering. It can accelerate the benefits gained from them.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2008.04a
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• pp.241-246
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• 2008

Design of a high-speed railway line requires collaboration of heterogeneous application systems and of engineers with different background. Object-based 3D models with metadata can be a shared information model for the effective collaborative design. In this paper, railway infrastructure information model is proposed to enable integrated and inter-operable works throughout the life-cycle of the railway infrastructures, from planning to maintenance. In order to develop the model, object-based 3-D models were built for a 10km railway among Korea high-speed railway lines. The model has basically three information layers for designers, contractors and an owner, respectively. Prestressed concrete box-girders are the most common superstructure of bridges. The design information layer has metadata on requirements, design codes, geometry, analysis and so on. The construction layer has data on drawings, real data for material and products, schedules and so on. The maintenance layer for the owner has the final geometry, material data, products and their suppliers and so on. These information has its own data architecture which is derived from similar concept of product breakdown structure(PBS) and work breakdown structure(WBS). The constructed RIIM for the infrastructures of the high-speed railway was successfully applied to various areas such as design check, structural analysis, automated estimation, construction simulation, virtual viewing, and digital mock-up. The integrated information model can realize virtual construction system for railway lines and dramatically increase the productivity of the whole engineering process.