• 한국정보통신학회:학술대회논문집
• /
• 한국해양정보통신학회 2008년도 추계종합학술대회 B
• /
• pp.281-284
• /
• 2008

본 논문에서는 멀티미디어 SoC 플랫폼의 ASIC 설계에 대해 기술한다. 구현된 플랫폼은 32비트 OpenRISC1200 마이크로프로세서, WISHBONE 온 칩 버스, VGA 제어기, 디버그 인터페이스, SRAM 인터페이스 및 UART로 구성된다. 32 비트 OpenRISC1200 프로세서는 명령어 버스와 데이터 버스가 분리된 하버드 구조와 5단 파이프라인 구조를 가지고 VGA 제어기는 메모리로부터 읽은 이미지 파일에 대한 데이터를 RGB 값으로 CRT 혹은 LCD에 출력한다. 디버그 인터페이스는 플랫폼에 대한 디버깅 기능을 지원하고 SRAM 인터페이스는 18비트 어드레스 버스와 32비트 데이터 버스를 지원한다. UART는 RS232 프로토콜을 지원하는 시리얼 통신 기능을 제공한다. 본 플랫폼은 Xilinx VIRTEX-4 XC4VLX80 FPGA에 설계 및 검증되었다. 테스트 코드는 크로스 컴파일러로 생성되었고 JTAG 유틸리티 소프트웨어와 gdb를 이용하여 패러럴 케이블을 통해 FPGA 보드로 다운로드 하였다. 이 플랫폼은 최종적으로 Chartered 0.18um 공정을 이용하여 단일 ASIC 칩으로 구현 되었으며 100MHz 클록에서 동작함을 확인하였다.

• 한국콘텐츠학회논문지
• /
• 제21권5호
• /
• pp.889-904
• /
• 2021

현대 도시의 불확실성과 유동성은 전통적인 도시계획에 큰 도전을 제기했지만, 이런 도전은 랜드스케이프 어바니즘이 급성장하는 계기가 되기도 했다. 도시 오픈 스페이스는 랜드스케이프 어바니즘의 중요한 실천의 장으로, 수많은 경관 디자이너들에게 전시의 플랫폼을 제공했다. 본 연구의 목적은 랜드스케이프 어바니즘의 핵심적인 내용이 오픈 스페이스 속에서 표현하는 방식을 탐구하고, 국내 오픈 스페이스 디자인 경향을 제시하고자 한다. 이 때문에 랜드스케이프 어바니즘의 이론과 실천이 창시된 뉴욕에 연구 시각을 집중했다. 연구방법은 도시 오픈스페이스 구성요소와 랜드스케이프 어바니즘 핵심개념을 바탕으로 분석틀을 구축하여 사례 실증 분석을 중심으로 뉴욕시의 도시 오픈스페이스를 고찰하는 것이다. 사례 분석을 통해 랜드스케이프 어바니즘의 다섯 가지 특징을 알 수 있었다. 즉, 자연 지형 융합이나 모방, 녹색 인프라 구축, 생태 복원력 강조, 무계획적인 사건 대응하는 적응성, 다중스케일에서 부지의 해석이다. 본 연구는 랜드스케이프 어바니즘 관점에서 제시한 디자인 제언은 향후 국내 도시 오픈 스페이스 디자인 방향에 참고할 가치가 있는 자료를 제공할 것이다.

• 경영과학
• /
• 제10권2호
• /
• pp.79-91
• /
• 1993

Strategic decisions related to the design of a physical distribution system can be classified into three basic components : facility location, transportation, inventory decisions. In this research the interdependence of those decisions are expressed in a mathematical model such that the total relevant cost of the system is minimized. We suggested a heuristic technique for solving the model. In broad terms, our solution technique combines a heuristic method for determining which candidate DCs to open and an exact method for minimizing costs given a set of open DCs. And we also developed a decision supporting package for the design of a physical distribution system.

• 화약ㆍ발파
• /
• 제10권2호
• /
• pp.3-7
• /
• 1992

Concerning to Taeku city subway construction project(1-4 site), the original design was adapted NATM Tunnel method to the 8 meter thickness of overburden. Surveyor checked sity and design material and finally decided to change into Open Cut method because overburden is not only below 1 1/2 times thickness of comparate Tunnel width but there is no traffic conjunction in job site.

• 교육녹색환경연구
• /
• 제9권1호
• /
• pp.11-22
• /
• 2010

Recently, the necessity of open spaces is increased greatly in the city. But in many reasons, open spaces are diminishing gradually in the existing cities. It is more difficult to keep that space because of expensive land price, and the interests between the neighbors. To solve this problem, the local governments tries to change the street system more convenient to the pedestrian by adapting no vechile street system during some specific time. In this point of view, the street which include fence of school, house, and apartment can be the open space. Especially, removal of the school fence can be a useful solution providing open spaces to small cities suffering from lack of open spaces. In this researching background, several schools in Wonju were selected in this research, some has already been opened, and others yet. Opinions of students, presidents of these schools, and citizens are surveyed about removal of fence. In the basis of this result, we deduce problems followed by removing the fence, and reflect it in the plan of opening the fence to present the guidance to cross over the functional limitation of the fence and use it as a open space.

• 전기학회논문지
• /
• 제64권2호
• /
• pp.254-259
• /
• 2015

On January 30, 2012 an auxiliary component of Byron Unit 2 was tripped on bus under voltage. The cause of the event was the failure of the C-phase insulator track for the Unit 2 station auxiliary transformer(SAT) revenue metering transformer. In addition to this event, other events have occurred at other plants resulting in an open-phase condition.[1] Therefore, Nuclear Regulatory Commission(NRC) has requested that not only nuclear power plant(NPP) operating company but also its Design Certification(DC) applicant have to prepare open-phase detecting system in their operating plants and design document. In this paper, various open-phase conditions are simulated in NPP using Electromagnetic Transient Program(EMTP) and Atpdraw, and open-phase condition detecting system is proposed for Main Transformer(MT), Unit Auxiliary Transformer(UAT) and SAT connected power line in NPP.

• 한국실내디자인학회논문집
• /
• 제21권4호
• /
• pp.96-105
• /
• 2012

The fundamental purpose of this study is whether Show Window Display actually affect on purchase and if it does, how much Show Window Display have influence on the buyer's satisfaction. Show windows are most important at clothing stores. The show open types of domestic clothing stores are usually open-type and semi open-type. Show Window Display types of low and middle prices stores are generally opened, horizontal and storied type and the shape, height, opening type and use of ground floor are different by regional distinct features. Generally Show Window Display are consisted by lights, mannequins and directed props. In buying patterns, an impulse buying has more stronger effect than a scheduled buying, a substituted buying and non-buying. An impulse buying are strongly affected by Design and others are prices. The reason why Show Window Display affecting on purchase is the satisfaction of Design and the strong stimulus to purchase(impulse buying), and then Show window Display used by all components strongly has an effect on it. Factors of purchase desires were Design, price and quality in order and factors of purchase motivations were the motivation of clothing design and the motivation of impulse buying. Thus the effects of Show Window Display and factors of purchase motivations are same. As a result of this study, differentiated Show Window Display methods of clothing stores affect the value of goods, the stimulus of purchase and fostering sales effectiveness. Therefore the instruction of Show Window Display methods are indicated by this study.

• 유체기계공업학회:학술대회논문집
• /
• 유체기계공업학회 2000년도 유체기계 연구개발 발표회 논문집
• /
• pp.145-152
• /
• 2000

A turbopump system composed of two pumps and one turbine is considered. The turbine composed of a nozzle and a rotor is used to drive the pumps while gas passes through the nozzle, potential energy is converted to kinematic energy, which forces the rotor blades to spin. In this study, an aerodynamic design of turbine system is investigated using compressible fluid dynamic theories with some pre-determined design requirements (i.e., pressure ratio, rotational speed, required power etc.) obtained from liquid rocket engine (L.R.E.) system design. For simplicity of turbine system, impulse-type rotor blades for open type L.R.E. have been chosen. Usually, the open-type turbine system requires low mass flow rate compared to close-type system. In this study, a partial admission nozzle Is adopted to maximize the efficiency of the open-type turbine system. A design methodology of turbine system has been introduced. Especially, partial admission nozzle has been designed by means of simple empirical correlations between efficiency and configuration of the nozzle. Finally, a turbine system design for a 10 ton thrust level of L.R.E is presented.

• 한국강구조학회 논문집
• /
• 제23권1호
• /
• pp.113-124
• /
• 2011

본 연구는 BIM 기반의 건축구조설계 업무 프로세스에서 활용 가능한 철골 구조물의 구조해석모델과 기본상세모델의 상호운용성에 관한 것으로, 구조설계 업무를 지원하는 구조해석 소프트웨어와 상세모델링 및 도면작성 업무를 지원하는 BIM 소프트웨어 사이의 정보 교환을 수행할 수 있는 인터페이스 모듈의 개발에 관한 것이다. 인터페이스 모듈은 BIM의 상호운용성을 위한 정보 교환 방식 중 직접 연결 방식을 적용하였으며, 상용 BIM 어플리케이션 벤더에서 제공하는 OpenAPI를 이용하여 닷넷 프레임워크 개발환경을 통해 개발하였다. 개발된 인터페이스 모듈의 검증을 위해 예제 모델을 선정하여 구조해석모델로부터 상세모델링을 수행하기 위한 기본상세모델의 생성을 수행하였으며, 수행 과정을 기존 프로세스와 인터페이스 모듈을 적용한 연구 프로세스로 구분하여 비교, 분석함으로써 인터페이스 모듈의 효율성을 검증하였다.

• 한국BIM학회 논문집
• /
• 제11권1호
• /
• pp.31-38
• /
• 2021

The design principles of new urbanism (NU) have been adopted for new towns-in town projects for inner city neighborhoods in Seoul, Korea Since 2000. Here, ten NU principles were matched to four urban design categories: streets, land use, housing and buildings, and public open spaces. These elements were analyzed for Eunpyung New Town project. Through the case, the applications and implications NU principles are explored. The principles of connectivity, quality architecture and urban design, increased density, green transportation, sustainability, and quality of life were positively and successively adopted for streets, land use, housing and buildings, and public open spaces. The principles of mixed-use and diversity and traditional neighborhood structure were only partially applied in land use, housing and buildings, and public open spaces. It should be note that the walkability principle is intended not for job-housing proximity, but for pedestrian-friendly street design.