• Proceedings of the Korea Society of Design Studies Conference
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• 2001.05a
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• pp.54-55
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• 2001

• Proceedings of the KIEE Conference
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• summer
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• pp.869-871
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• 2004

This paper presents Single Phase Switched Reluctance Motor Optimum Design using Response Surface Methodology and 2-D Finite Element Method that is coupled with the circuit equation of the rectifier and converter. Moreover, A design process for SPSRM has been proposed. The optimum process has been performed with geometric parameters (${\beta_s}\;&\;{\beta_r}$) that influence the inductance variation for design variables. In this paper, SPSRM performances have been analyzed according to variations of electric and geometric parameters after determining design models in terms of efficiency and power factor maximization.

• Proceedings of the Korea Society of Design Studies Conference
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• 2005.05a
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• pp.206-207
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• 2005

• International Journal of Highway Engineering
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• v.4 no.3 s.13
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• pp.1-13
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• 2002

Design methods for new flexible pavements and overlays are in the transition from empirical to mechanistic approach, and many state highway agencies trend to move toward the adoption and use of mechanistic-empirical (M-E) design in new constructions and rehabilitations of flexible pavements. Hence, the Michigan Department of Transportation (MDOT) decided to develop a M-E flexible pavement design procedure, in which major pavement distresses such as fatigue cracking and rutting are employed as indicators of the serviceability of a flexible pavement. The main concept of the developed design procedure is that a designed pavement that is supposed to carry a certain number of traffic must satisfy designated thresholds of rut depths and fatigue lives during a service period. For the M-E design procedure, transfer functions were developed to predict rut-depths and fatigue lives. These functions related the pavement responses to pavement performance. For validation, three current new flexible pavement design cases were obtained from the MDOT. In these cases, asphalt concrete (AC) layer thicknesses determined by the suggested M-E procedure compare favorably with those determined by the current MDOT design practice that is based on AASHTO design guide. This finding implies that the suggested Michigan M-E flexible pavement design procedure can provide a good opportunity to improve the current design practice.

• The Journal of Information Technology and Database
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• v.6 no.2
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• pp.45-57
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• 1999

This paper makes an attempt to find a systematic portion of the database design process, especially using the Entity-Relationship(E-R) model. Basically, we consider three aspects as a systematic portion of the database design process. They are, the strategy that a designer selects to design an E-R diagram, designer's cognitive style, and the knowledge and preference of the database designer. An experiment has been carried out in order to verify the systematic relationship between above-mentioned three aspects and the E-R modeling performance. The target system is a professional baseball system. A normative E-R diagram was constructed based upon 48 E-R diagrams produced during the experiment. The ANOVA process has been used to analyze the results. It has been found that there exist significant differences in query-answering capacity and the completeness of the E-R model among design methods. Individual differences in cognitive styles has not been found to be significantly related to the modeling performance.

• Korean Journal of Computational Design and Engineering
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• v.9 no.1
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• pp.62-76
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• 2004

Many customers are no longer satisfied with mass-produced goods. They are demanding customization and rapid delivery of innovative products. Many companies are now realizing that the best way to reduce life cycle costs is to evolve a more effective product development paradigm using Internet and web based technologies. Yet there remains a gap between current market demands and product development paradigms. The existing CAD systems require that product developers possess all the design analysis tools in-house making it impractical to employ all the needed and newest tools. Hence, this paper addresses how assembly operation analysis can be embedded transparently and remotely into a service-oriented collaborative assembly design environment. A new assembly operation analysis framework is introduced and a relevant architecture and tools are developed to realize the framework. Instead of the current sequential process for verifying and validating an assembly design, a new Virtual Assembly Analysis (VAA) method is introduced in the paper to predict the various effects of joining during actual collaborative design. As a case study, arc welding and riveting processes are investigated. New service-oriented VAA architecture and its VAA components are proposed and implemented on prototype mechanical assemblies.

• Proceedings of the Korea Society of Design Studies Conference
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• 2002.05b
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• pp.12-13
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• 2002

• Journal of the Korean housing association
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• v.12 no.2
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• pp.181-190
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• 2001

The purpose of this study is to analysis web sites which relate to housing environment on Internet and to suggest guidelines which are needed in digital life. Data are in 53 web sites searched by housing environmental word such as people, living, town and so on. The web sites are analyzed by key words. The results of this study were as follow: The web sites are divided into e-housing community, e-housing management, e-housing workplace and e-housing design. These are the digital life of new type. E-housing community sitess key words are 3D virtual world, chatting, information, service, community etc. E-housing community is related to making new wired community cross time and space. E-housing management sitess key words are guard management, apartment management, building management etc. E-housing management sites provide the useful information of housing management. E-housing workplace sitess key words are virtual office. conference etc. E-housing workplace sites enable us to work in cyberspace. E-housing design sitess key words are design, interior, furniture etc. E-housing design sites provide marketing, consulting and designing in relation to the house. The web life style on cyberspace is common and makes many changes happen in house life and environment.

• Proceedings of the Korea Society of Design Studies Conference
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• 2002.11b
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• pp.142-143
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• 2002

• The Journal of Society for e-Business Studies
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• v.13 no.3
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• pp.137-152
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• 2008

Customer's trust is one of major competitiveness sources along with price in Internet Web-based B2C e-commerce business. In general, trust is defined as the attitude that is established by a trustor when trustworthiness exists in a trustee and is perceived by a trustor. Designing e-commerce websites is important in that e-commerce website is understood as a means of constructing perceived trustworthiness and delivering it to customers. In this study 50 participants were interviewed and total of 831 participants responded to the survey questionnaire to investigate design factors influencing the perceived trustworthiness in e-commerce websites. Nine design factors were derived as the perceived trustworthiness-related design factors, and only six out of nine design factors were found as having significant effects on the perceived trustworthiness of e-commerce websites. In addition, the significant design factors were different according to gender and ages of e-commerce customers.