• 한국해양공학회지
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• 제11권4호
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• pp.213-220
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• 1997

In this study, a design for a shape of centrifugal pump impeller has been performed using a p.c. under a Windows environment. Interaction between a user and a computer has been easily established using the Visual Basic. In determining an outer diameter of an impeller, steps are divided into two, a basic computational step and a refinment step. In this way user can enter his/her experience at the refinment step and hence can expect to lessen the nonlinear nature inherent to the design. In determining a shape of a side view of an impeller, the Bezier cubic curve has been used, and it can be seen that the Bezier cubic curves are well suited in the shape design under a Windows environment. By simply manipulating the four control points, one can generate various cubic curves among which one is selected. Also, a simple method, which can determine the curved position of an impeller vane, has been developed. These data can be used for final CAD drawings.

• 국제학술발표논문집
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• The 1th International Conference on Construction Engineering and Project Management
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• pp.1150-1153
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• 2005

The orders of Design-Build Delivery System (DBDS) in a large and public construction project have been increasing. Single Source Responsibility (SSR) for design and construction, which contributes to quality improvement of design and construction, has been performed. The DBDS performs SSR for design and construction, but, it has not maximized effect because of the dissatisfied alternative analysis procedures which are based on constructability evaluation and the information system in the design step. In this research, Constructability Evaluation Factors (CEFs) that must be evaluated, investigated, and reflected in the basic design step for design-build projects. The CEF proposed and the business process of each conductor has been systematized. To propose constructability evaluation factors, first classify drawing information by the constructability evaluation sphere. CEFs must be proposed to evaluate factors according to interference among work items. Second, applicable CEFs must be classified by preference ranking and weight. Third, the values of constructability factors in accordance with building elements and work items, need to be calculated. Finally, the CEFs proposal will support rational decision making, design cost reduction, and quality improvement through the values for constructability of building elements and work items.

• 공학교육연구
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• 제25권6호
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• pp.58-68
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• 2022

This paper aims to prepare basic design education materials explaining the design process of egg drop device by incorporating critico(-creative) thinking. To this end, in this paper, by utilizing the creative problem solving process and the elements and standards of critical thinking, 'the five-step creative engineering design education guidelines' have been prepared so that engineering freshmen can effectively participate in engineering design projects without major knowledge. We would like to apply them to the egg drop device design. The egg drop device design, which is experiment to make and drop a drop device that can protect an egg from breaking when it is dropped freely from high places, is an engineering design project that is widely used not only in elementary, middle and high school science events but also in engineering education courses under the name of 'stunt egg'. Perhaps the basic design education material on the egg drop device design incorporating critico(-creative) thinking in this paper will contribute to incorporating critico(-creative) thinking into engineering education, as well as to achieving the educational goals of the basic design subject.

• 한국전산구조공학회논문집
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• 제26권1호
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• pp.49-57
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• 2013

일반교량은 상부구조, 연결부분, 하부구조 및 기초로 구성되어 있고 내진성능은 하부구조와 연결부분의 파괴메카니즘에 의해 결정된다. 그러므로 내진설계는 구조부재의 설계강도, 즉 설계단면을 결정하는 기본설계단계에서 수행되어야 한다. 도로교설계기준 내진설계편은 두 가지 기본설계 방식을 제시하고 있다. 첫째는 기존 설계방식으로 내진설계편이 제시한 응답수정계수를 적용하는 방식이고 둘째는 새로 도입된 연성도 내진설계 방식으로 설계자가 응답수정계수를 결정하는 방식이다. 이 연구에서는 일반교량을 대상으로 두 설계방식을 같이 적용하는 기본설계를 수행하고 내진성능 확보의 관점에서 요구되는 보완사항을 제시하였다.

• 한국주거학회논문집
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• 제17권3호
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• pp.89-98
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• 2006

The purpose of this study was to survey curriculum of the department of housing and to develop housing welfare educational program in order to offer the information helpful to the professional of housing education and housing policy makers. Documentary research and content analysis methods were used in this study. Data drawn from internet homepage of each universities and public institutions. The major results of this study are as follows. 1) There were 30 universities which has related to the department of housing and the name of major was very various. The half of their curriculum were housing and interior design. 2) The housing welfare educational program should be step by step. The first is basic step to team basic theory of housing and to establish concept of housing welfare. The second is application and practice step of housing design and housing policy and housing economics. The third is specific application step to consider that who were taker from the housing welfare policy and to take practical training in field.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2005년도 추계학술대회 논문집
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• pp.363-366
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• 2005

The purpose of this study was to survey curriculum of the department of housing and to develop housing welfare educational program in order to offer the information helpful to the professional of housing education and housing policy makers. Documentary research and content analysis methods were used in this study. Data drawn from internet homepage of each universities and public institutions. The major results of this study are as follows. 1) There were 30 universities which has related to the department of housing and the name of major was very various. The half of their curriculum were housing and interior design. 2) The housing welfare educational program should be step by step. The first is basic step to learn basic theory of housing and to establish concept of housing welfare. The second is application and practice step of housing design and housing policy and housing economics. The third is specific application step to consider that who were taker from the housing welfare policy and to take practical training in field.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 2006년도 제5회 박판성형 SYMPOSIUM
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• pp.49-54
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• 2006

During most of manufacturing processes of auto-body panels, the trimming line should be designed in advance prior to flanging. It is an important task to find a feasible trimming line to obtain a precise final part shape after flanging. This paper proposes a new fast method to find feasible trimming line based on one-step analysis. The basic idea of the one-step analysis is to seek for the nodal positions in the initial blank from the final part, and then the distribution of strain, stress and thickness in the final configuration can be calculated by comparing the nodal position in the initial blank sheet with the one of the final part. The one-step analysis method is able to predict the trimming line before flanging since the desired product shape after flanging can be defined from the final configuration and most of strain paths are simple during the flanging process. Finally, designers can obtain a discrete trimming line from the boundary of the developed meshes after one-step analysis and import it into CAD system in the early design stage. The proposed method has been successfully applied to two basic curve flanging processes demonstrating many advantages.

• 한국의류산업학회지
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• 제11권6호
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• pp.857-866
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• 2009

The objective of this study was to design a fashion storytelling method, which is a strategic instrument for constructing a fashion show with artistry and popularity, based on the principle and structure of storytelling. In order to understand the concept and principle of storytelling composed of story and telling and to introduce storytelling into fashion shows, we associated fashion design with the substance of a story, a show with the form of telling, and a fashion show with storytelling. Based on these associations, we analyzed the relationship between fashion show and storytelling and developed basic elements and structure necessary to design a fashion storytelling method. Through this study, we designed a fashion storytelling method with five steps, which are story planning, story development, fashion show structure design, fashion show production, and fashion show execution. These steps were again classified into contents setting step, structure design step, and expression step. The contents setting step included story planning and development for creating stories, and the structure design step means the design of fashion show structure that adds telling to the stories. Lastly, the expression step included fashion show production and execution that forms a storytelling by combining the stories and the telling.

• 한국CDE학회논문집
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• 제12권5호
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• pp.366-375
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• 2007

Although the STEP modularization is the major development methodology for STEP Application Protocol, there have been few studies on the STEP Modularization in Korea. The necessity of STEP Modularization research has been raised continuously. In addition, the importance became larger and larger because most of newly developing APs, including AP241, are developed using modularization approach. The object of this study is to investigate the basic structure and contents of AEC facilities related Application Modules using STEP Modularization. This study examines 1) the technical analysis regarding STEP Modularization, 2) application modules development regarding civil engineering elements of AP241; Aec_faciliteis_classification", "Aec_civil_item", and "Aec_civil_componet", 3) the developed application modules verification, and 4) the implementation methodology suggestion for application modules and modular AP.

• 한국기계가공학회지
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• 제14권4호
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• pp.108-117
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• 2015

In this paper, as a previous step of software development, through an analysis step in the basic design process of the FPSO crane, ERD, which could help develop common understanding between its developer and the user, was introduced. From the flowchart of the design process, the overall work flow in its development was understood. Then, after the design process of the crane was divided into many entities, the attributes of each entity were defined and the relationships between the entities were established, followed by ERD creation through the use of IDEF1X notation. The results of the analysis can be readily understood even by users who lack of software knowledge, and then their change requirements can be immediately reflected in the developed system that requires modification.