• 한국항공우주학회지
• /
• 제35권9호
• /
• pp.805-815
• /
• 2007

단일추력의 정상 작동 상태의 액체 로켓 엔진 시스템 모듈화 프로그램을 작성하기 위한 선행 연구로 엔진 주요 구성품들에 대한 성능설계 프로그램을 작성하였다. 주요 구성품으로는 추력실, 원심형 펌프, 충동형 터빈, 재생 냉각 채널 등이 고려되었다. 복잡성을 피하기 위하여 열역학적 관계식 및 비점성 이론을 바탕으로 한 여러가지 관계식들과 간략한 수학적 모델을 사용하였다. 본 논문에서는 도출된 결과를 정성적으로 살펴보고, 주요 설계 파라미터를 바꿔가면서 구성품의 작동특성 변화에 대한 경향성을 검토함으로써 일반적인 구성품 설계 이론에 부합하는가를 확인하였다.

• 한국인터넷방송통신학회논문지
• /
• 제17권1호
• /
• pp.183-190
• /
• 2017

최근 건축분야는 BIM(Building Information Modeling)이 차세대 건축설계 도구로 각광받고 있다. BIM기술의 강점은 바로 협업 작업이 가능하고 그것이 실시간으로 공유가 된다는 것이다. BIM기술을 위한 건축 설계 프로그램인 Revit 프로그램에서는 정보 입력 측면을 강화시켜 설계 단계에서 구성요소의 정보를 알 수 있게 만들어주는 프로그램이다. 그러나 Revit 프로그램 사용에 있어서 한 설계자에 의하여 만들어진 패밀리를 다른 설계자와의 공유나 재사용이 불가능하다. 이에 이러한 비효율적인 측면을 개선하기 위해 설계 도면을 Excel 파일로 만들어 보기 쉽게 만든 프로그램을 구현하였다.

• 대한기계학회논문집B
• /
• 제31권3호
• /
• pp.256-263
• /
• 2007

The purpose of this study is to investigate the cooling performance of heat sinks for an electronic telecommunication system by adequate natural convection. Heat generation rates of electronic components and the temperature distributions of heat sinks and surrounding air are analyzed experimentally and numerically. In order to perform the heat transfer analysis for the thermal design of telecommunication system a program is developed. The program used the graphic user interface environment to determine the arrangement of heat sources, interior fan capacity, and heat sink configuration. The simulation results showed that the heat sinks were able to achieve a cooling capacity of up to 230W at the maximum temperature difference of $19^{\circ}C$. To verify the results from the numerical simulation, an experiment was conducted under the same condition as the numerical simulation, and their results were compared. The design program gave good prediction of the effects of various parameters involved in the design of a heat sinks for an electronic telecommunication system.

• 대한조선학회논문집
• /
• 제42권3호
• /
• pp.290-298
• /
• 2005

A study of design and analysis for the POD type waterjet is conducted. The analysis and design of waterjet system are more difficult than that of conventional propulsor because waterjet is complicatedly composed of many parts which are impeller, stator, inlet, nozzle, etc. The streamline method is traditionally used in the design of pump whose characteristics are similar to those of waterjet. This streamline method, however, has some limitation in analysis of a viscous flow as well as the interaction of inlet part of hull. In the present study, the developed CFD program is applied to the analysis of POD type waterjet. The developed program is first validated by comparing the existed experimental results. The designed waterjet system is also analyzed by the developed CFD program and analyzed results show that the performance of the present POD type waterjet is above the requirement.

• 한국실내디자인학회:학술대회논문집
• /
• 한국실내디자인학회 2008년도 춘계학술발표대회 논문집
• /
• pp.82-85
• /
• 2008

A cosmetic shop in a department store is the best place in Korea's cosmetic market flow that shows the total image of each brand. The present day departmental cosmetic shops are centered around global brands and comparative brand power is competing with a small number of local brands. It is a fact that not only regarding the brand power of local brands but also the space design of their shops are different than the global brands. And, influenced by a modern society, culture, economic surrounding, the customers are getting original and individual. Their individualistic life style is demanding a shop environment with new concept. Such a sale environment is not for just product sale and a place where exchange economy of sale occurs. It is requisite for communication where total marketing strategy Is used In an active way. We must acknowledge it as a symbolic place being the ultimate site of customer oriented exchange economy showing the image of both product and the company. The aim of this plan is to set up a sale environment that will enhance the brand awareness and product value. We intended to provide purchase comfort and visual effect to the customer simultaneously with an Increase in customer attention by putting in the appropriate design requisites as per the brand specialty and by the application of a distinguished S.I.P (Store Identity Program) for the shop.

• 전기학회논문지
• /
• 제60권4호
• /
• pp.811-816
• /
• 2011

In this paper, we propose a optimal design using the Evolution Strategy of a high gain $4\times4$ array antenna that have the resonant frequency of a 19.05GHz with 18.86GHz~19.26GHz bandwidth. The proposed array antenna structure is designed to be allocated equally electric power by microstrip patch power splitter. Thus the optimal array antenna with power splitter are determined by using an optimal design program based on the evolution strategy. To achieve this, an interface program between a commercial EM analysis tool and the optimal design program is constructed for implementing the evolution strategy technique that seeks a global optimum of the objective function through the iterative design process consisting of variation and reproduction. The simulation result of $4\times4$ array antenna is confirmed that the Gain is 19.36 dBi at resonance frequency 19.05GHz.

• 정보교육학회논문지
• /
• 제25권2호
• /
• pp.377-385
• /
• 2021

본 연구는 디자인 사고를 적용한 피지컬 컴퓨팅 SW교육 프로그램을 개발하고 적용하고자 하였다. 제작한 SW교육 프로그램 제주시 소재 J, B 2개 초등학교 5, 6학년 22명의 학생을 대상으로 적용하였다. 창의성과 컴퓨팅 사고력 사전검사를 실시하고 총 5회기 20시간에 걸쳐 디자인 사고를 적용한 피지컬 컴퓨팅 SW교육을 진행한 후 창의성과 컴퓨팅 사고력 사후검사를 실시하였다. 검증 결과, 디자인 사고를 적용한 피지컬 컴퓨팅 SW교육 프로그램이 초등학생의 창의성과 컴퓨팅 사고력 향상에 효과적인 것으로 나타났다.

• 한국정보교육학회:학술대회논문집
• /
• 한국정보교육학회 2021년도 학술논문집
• /
• pp.31-36
• /
• 2021

AI 기술로 대변되는 4차 산업혁명 시대를 맞이하여 교육 현장에서 다양한 AI 교육이 이루어지고 있다. 하지만 교육 현장에서 이루어지는 AI 교육은 단발적인 프로젝트 교육 혹은 교사 중심의 교육이 대부분을 차지하고 있다. 이에 학생 중심, 현장 중심 교육을 실천하기 위해 디자인 씽킹을 기반으로 인공지능 교육 프로그램을 개발하였다. 디자인 씽킹 기반 인공지능 교육 프로그램은 생활 속 문제를 AI로 해결하는 과정을 통해 AI에 대한 이해와 활용 능력이 향상될 것이며, AI에 대한 이해를 넘어선 새로운 가치를 창출하는 능력을 길러줄 것이다. 디자인 씽킹 기반 인공지능 교육 프로그램 등으로 교육 현장에서 다양한 AI 교육이 이루어지길 기대한다.

• 한국실내디자인학회논문집
• /
• 제17권1호
• /
• pp.77-83
• /
• 2008

MVRDV is most important architect as created interesting architectural space in contemporary architecture, and so they applies to the unique theory in their architecture. They used to architectural diagram, program, datascape, density as a design tool. Especially, they have create new architectural space and form in using architectural diagram, program, datascape, density, and void. So, this study is purposed to explain how they use as architectural tool to make composition of it's architectural space and is purpose to explain what is their main concept in architectural space. MVRDV's architectural space has fundamental methodology. That is Datascape on uncertainty and continuity between urban space and architectural space. The former consist in using diagram and architectural program and the latter consist in operating architectural void and inner continuity surface. The conclusion is follows 1. The mode of spacial composition by architectural void is correspond density of city as MVRDV's architectural thinking. 2. The mode of spacial composition by architectural program is ambiguous to the boundary between inner and exterior space by transparency. 3. The mode of spacial composition by architectural diagram make to generate the architectural form and space, through the reinterpretation and relocation of architectural program. 4. The mode of spacial composition inner continuity plane is make relative between site and inner space.

• 한국의류산업학회지
• /
• 제18권5호
• /
• pp.617-624
• /
• 2016

The purposes of this study was to investigate impacts of loyalty program value on store loyalty through customer satisfaction and switching barrier. This study suggests some basis about the direction guidance for successful store-running marketing activities and beauty service related researches. A total of 986 usable questionnaires were obtained from female adults of Busan. Data were analyzed by frequency analysis, correlation analysis, factor analysis using SPSS for Window 22.0 and confirmatory factor analysis and structural equation model analysis by AMOS 22.0. The results suggested that, loyalty program value benefits(hedonic benefits and utilitarian benefits) had positive effect on customer satisfaction, and loyalty program value costs(hedonic costs and utilitarian costs) had oppositive effect on customer satisfaction. The impact of hedonic benefits of the loyalty program values was the largest. Customer satisfaction and switching barrier directly affect store loyalty. The customer satisfaction affected the store loyalty indirectly but the direct effect was bigger.