• 한국주거학회논문집
• /
• 제28권1호
• /
• pp.109-117
• /
• 2017

It becomes increasingly important to develop sustainable housing to protect environment. The certification system for long-life housing was made to use houses for more than one hundred years in 2014. The long-life housing should be able to meet new demands by change of the population structure; low birthrate, aging and increase of single households. Therefore, it is necessary to suggest a prototype of long-life housing for partial rent. The objective of this study is to suggest a prototype for dividing housing in the long-life validation complex, which has design consideration for dividable house. The construction costs of a prototype for dividing housing is evaluated by comparing with other prototype without regard to dividing housing. The results were as follows: (1) The prototype for diving housing should be added an entrance, bathroom, kitchen for tenant, and above all, maintenance fees for tenant have to be managed seperately from house owner. (2) The equipment system for dividing housing should be designed when planning the space of house. However, design for diving housing should be reflected the unit plan at a minimum on what will and will not happen.

• International Journal of Fluid Machinery and Systems
• /
• 제2권4호
• /
• pp.353-362
• /
• 2009

In the process of turbine modernizations, the investigation of the influences of water passage roughness on radial flow machine performance is crucial and validates the efficiency step up between reduced scale model and prototype. This study presents the specific losses per component of a Francis turbine, which are estimated by CFD simulation. Simulations are performed for different water passage surface roughness heights, which represents the equivalent sand grain roughness height. As a result, the boundary layer logarithmic velocity profile still exists for rough walls, but moves closer to the wall. Consequently, the wall friction depends not only on roughness height but also on its shape and distribution. The specific losses are determined by CFD numerical simulations for each component of the prototype, taking into account its own specific sand grain roughness height. The model efficiency step up between reduced scale model and prototype value is finally computed by the assessment of specific losses on prototype and by evaluating specific losses for a reduced scale model with smooth walls. Furthermore, surveys of rough walls of each component were performed during the geometry recovery on the prototype and comparisons are made with experimental data from the EPFL Laboratory for Hydraulic Machines reduced scale model measurements. This study underlines that if rough walls are considered, the CFD approach estimates well the local friction loss coefficient. It is clear that by considering sand grain roughness heights in CFD simulations, its forms a significant part of the global performance estimation. The availability of the efficiency field measurements provides an unique opportunity to assess the CFD method in view of a systematic approach for turbine modernization step up evaluation. Moreover, this paper states that CFD is a very promising tool for future evaluation of turbine performance transposition from the scale model to the prototype.

• 한국도로학회논문집
• /
• 제2권4호
• /
• pp.111-122
• /
• 2000

우리나라 도로중 PMS가 구축된 도로는 현재, 고속도로와 국도가 있다. 그러나 많은 시(市)에서 도로의 효율적인 관리를 위해 요구되는 시도로 PMS는 아직 없는 실정이다. 따라서, 본 논문에서는 시단위에 적용가능한 Prototype PMS 전산시스템을 개발 제시하였다. 개발한 PMS는 기본적으로 PC 수준에서 운영 가능하도록 구성하였으며 GIS 기능을 이용하여 사용자가 쉽게 포장상태나 유지보수 현황 및 계획을 이해할 수 있게 하였다. 본 PMS의 기능상 구성은 크게 조회, 분석, 자료관리, 출력 부분으로 구축하였다. 특히, 분석과정의 주논리(보수우선순위결정, 보수공법결정)부분은 필요시 사용자가 각 항목의 criteria 값을 수정 할 수 있게 하여 시스템운영이 경직되지 않도록 배려하였다. PMS 데이터베이스의 항목은 시도로 PMS의 규모 및 목적을 고려하여 선정하였다. 또한 PMS에서 사용된 도로 관리길이 및 위치 지정체계는 노선을 기준으로 기본 100m길이의 section으로 분할관리하였으며, 위치 지정체계 방식은 reference points 방식을 기본으로 사용하였다.

• 해양환경안전학회지
• /
• 제24권5호
• /
• pp.527-536
• /
• 2018

본 논문에서는 한국형 이내비게이션 프로젝트의 사고취약선박 모니터링 지원서비스 중 상황대응 및 상황관리 프로토타입 모델을 개발하였다. 프로토타입 모델 개발을 위해서 해사데이터 교환 표준 현황과 S-100 표준 데이터 모델 개발 절차를 분석하고 개발 절차에 따라 서비스의 요구사항 분석 및 관련 표준을 참고하여 상황대응 및 상황관리 모델에 대한 프로토타입 어플리케이션 스키마를 개발하고, S-100 표준에 맞추어 프로토타입 피쳐 카탈로그와 프로토타입 포트레이얼 카탈로그를 제작하였다. 개발된 프로토타입 데이터 모델의 검증을 위해서 광양항을 기반으로 테스트 데이터셋을 제작하고, S-100 기반 데이터의 유효성 검증을 위한 소프트웨어를 통해 검증한 결과 모든 데이터가 유효함을 확인하였으며, S-100 뷰어에서 정확한 위치에 지정된 심볼이 표출됨을 확인하였다.

• 한국의류학회지
• /
• 제25권6호
• /
• pp.1037-1045
• /
• 2001

This research is done to design and manufacture prototype clean room garments to improve the product yield of the clean room processing. To assist the research, other papers and references on the same subject were collected for analysis. Also the researcher made interviews with the workers at the clean room. The prototype garments made for this project was compared against the commercially available clean room garments used in the industry. A set of test was conducted to measure particle release from the garments. The prototype clean room garments was manufactured after having considered all the aspects stated above, and tested for the level of particle release. The test subjects performed 4 different movements(marching, arms stretch, squat and rise, and jogging) while wearing the prototype garments and commercially available clean room garments. Particle counts produced by each movement were measured. The data collected was statistically analyzed. The followings are the result of the test. 1) Overall, the prototype garments yielded less particle release.(p<0.001) 2) It showed greatest difference of particle counts for jogging(p<0.001) and squat and rise(p<0.001). In the arms stretch test. the prototype garments was also more effective in controling the particle, however, in the marching test. no significant difference was detected. 3) The prototype garments had less particle release in upper(p<0.001), middle(p< 0.001), and lower level(p<0.01) than the commercially available clean room garments. Manufacturing a new fabric for the clean room processing is important, but this research proves that the design of the clean room garments also determines the efficiency garments in the particle control. Therefore the same fabric can perform differently according to how it is designed. Improving the design will also improve the 7article control and reduce the cost of research. Eventually, the manufacturers will increase the product yield.

• 한국경영과학회:학술대회논문집
• /
• 대한산업공학회/한국경영과학회 1994년도 춘계공동학술대회논문집; 창원대학교; 08월 09일 Apr. 1994
• /
• pp.646-646
• /
• 1994

• 한국원자력학회:학술대회논문집
• /
• 한국원자력학회 2001년도 추계학술발표회요약집
• /
• pp.103.1-103
• /
• 2001

• 한국원자력학회:학술대회논문집
• /
• 한국원자력학회 1999년도 춘계학술발표회요약집
• /
• pp.58-58
• /
• 1999

• 한국원자력학회:학술대회논문집
• /
• 한국원자력학회 1999년도 추계학술발표회요약집
• /
• pp.99.2-99
• /
• 1999

• 한국원자력학회:학술대회논문집
• /
• 한국원자력학회 1998년도 추계학술발표회요약집
• /
• pp.86-86
• /
• 1998