• 제목/요약/키워드: Unit Process

검색결과 3,635건 처리시간 0.041초

유닛모듈러 기반 도시형 생활주택의 BIM 모델링 프로세스 개발 연구 (The Study on the Developing Process of BIM Modeling for Urban-life-housing Based on Unit Modular)

  • 이창재;임석호
    • KIEAE Journal
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    • 제12권6호
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    • pp.77-84
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    • 2012
  • The current architectural design of unit modular has been based on 2D of CAD program, so unit modular character which needs unit information management, as a dried-member system, has no effect on design process. The purpose of this study is We have developed a suitable BIM design process, according to various works of construction, then tried to contribute to supply and activation of the urban-life-housing based on unit modular. The BIM modeling process based on unit modular has been in order of unit combination with preparing manual classification, and, it has been constructed, at construction site, from housing foundation to roof finish by Bottom-up method. At a manufacturing factory, it has been produced in order of 1) grouping materials and parts, 2) fabricating unit boxes, and 3) interference examination of unit boxes, and each order has been classified as housing structure, architecture, plumbing process separately. At a construction site, the fabrication has been done in order of, like as a real housing construction scenario, 1) RC foundation work 2) unit module job-site-fabrication work, 3) roof truss work, 4) plumbing and HVAC work, and 5) housing interior finish work. After modeling process, the interference examination on each work of construction has finally completed modeling. The Unit modular utilizing BIM modeling can make easy housing maintenance through systematic control with preparing manual of unit module information, and securing accurate and speedy construction information. And it will promote design credibility and create maximum effect of unit modular construction method, such as construction period reduction and upgrade of construction quality, etc., through the computer simulation as real as construction environment in cyber space, and with the interfering examination.

낙동강 수계에서 제사방적제조 업체에 대한 공정별 원단위산정 및 분석 (Unit Mass Estimation and Analysis from Textile Spinning/Weaving Manufacturing Facility Nearby Nakdong River Basin)

  • 이홍신;손건태;구정은;콘분락사;이홍태;이승환
    • 상하수도학회지
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    • 제22권5호
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    • pp.541-550
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    • 2008
  • In this investigative study, the unit mass discharge for the major water quality parameters such as flowrate, SS, BOD, CODmn, CODcr, TN, TP from textile spinning/weaving industry nearby Nakdong river basin was estimated. To represent the respective industries, three companies from hundreds of textile spinning/weaving industries located in Nakdong river basin was carefully selected based on its manufacturing goods, flowrate and location for the estimation of unit mass discharge based on unit operation and process. There was a drastic decrease of unit mass discharge estimation between influents and effluents of water quality parameters, which represents the removal capacity of wastewater treatment plant. With the advent of new regulation on the imposed payment proportional to the total amount of pollutants discharge into the water body, the concept of cleaner production technology should be employed in the unit operation/process in wastewater treatment plant as well as textile manufacturing procedure to minimize the levy on the pollutants discharge. Unit mass discharge estimations of unit process (estimated in this study) in major water quality parameters (SS, BOD, COD, TN and TP) based on land were similar to those of composite process (estimated by National Institute of Environmental Research). But the unit mass discharge estimations of unit process in BOD and CODmn based on total sale were much higher than those of composite one while in SS, TN and TP similar to each other. For the detailed estimation of the imposed payment, unit mass estimation based on unit process should be further emphasized.

유닛모듈 운송 방법의 개선방향 연구 (Study of Improved Transporting Methods on Unit Module)

  • 박수열;김균태;박남천;정인수
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2012년도 추계 학술논문 발표대회
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    • pp.243-244
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    • 2012
  • Recently, research has been actively conducted for getting interested in unit module housing. However, the domestic unit modular housing research in the early stages yet, so the major process for research is lacking. Explore all these reasons fit with domestic unit housing development this paper, focusing on the process of shipping cargo by truck, transport unit module was studied. The purpose of this paper is to present new ideas and derive the direction of the development of the equipment safely and effectively fixed to the unit module of the transport unit module that will be helpful in the development of the equipment required for the transport process of the next unit module.

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고속 생산형 필름 진동판 성형기 및 금형 국산화 개발(I) - 단수 생산 진동판 성형기 - (Domestic Development of Vibrational Film Forming Machine and Die and Mold in the High Speed Production(I) - Single production forming machine -)

  • 김정현
    • 한국기계가공학회지
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    • 제11권6호
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    • pp.9-15
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    • 2012
  • Vibrational film has been more employed in ear-phones or small type of speakers along with a wide use of portable multi-media equipments such as MP3 and MP4. However, the current hand work production process of diaphragms is inefficient. In this study, a die-and-mold and a single production forming machine are developed, and they result in a multi-production forming machine. The multi-production forming machine consists primarily of a film feeding unit and an unwinding unit. A vacuum suction device provides the film feeding unit, while the unwinding unit is obtained using an appropriate damper. The advantage of the developed single production forming machine is shown according to a proper voice test.

사용의 개인화와 단위구성 시스템 디자인 (Personalization of Use and Unit Construction System Design)

  • 이병종
    • 디자인학연구
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    • 제16권2호
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    • pp.111-120
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    • 2003
  • 이 논문은 산업적으로 생산되는 제품의 개인화를 위한 디자인 방법과 그 과정을 연구하고, 그 결과로서 단위 구성 시스템 디자인을 제안하는 것이다. 따라서 본 연구는 산업사회에서의 개인화를 밝히고, 시스템적 접근법으로 산업적 생산제품의 사용과정을 분석하여 사용과정의 시스템을 규명하는 것에서 출발하고 있다. 사용과정의 시스템은 산업제품의 기능과 연관되어 있다. 따라서 산업제품의 기술 시스템 이론을 적용하여 사용 과정의 시스템을 구성하는 단위를 정의하고, 그 단위로 구성되는 시스템의 디자인을 열린 시스템으로서 규명한다. 그리고 개인용 컴퓨터를 대상으로 한 단위 구성 시스템의 실천적 구현을 통해 그 타당성과 한계를 밝히고 있다.

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해상에서의 LNG 생산을 위한 공정 고찰 (Study of Process for Offshore LNG Production)

  • 김승혁;하문근;김병우;;구근회
    • 한국해양공학회:학술대회논문집
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    • 한국해양공학회 2002년도 추계학술대회 논문집
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    • pp.119-123
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    • 2002
  • Liquefied Natural Gas(LNG) continues to attract modern gas industries as well as domestic markets as their main energy source in the recent years. This is mainly because LNG is inherently cleaner and more energy efficiency than other fuels. Offshore LNG production plant is of interest to many oil producing companies all over the world. This article discuss about the production process encountered while developing such a production facility. Typical offshore oil and gas processing required for oil stabilization and other optional units that can be added to the facilities. The production process can broadly be divided into five major units namely, (i) Oil Stabilization unit, (ii) Gas Treatment unit, (iii) Methane Recovery unit, (iv) Distillation unit and (v) LNG Liquefaction unit. The process simulation was carried out for each unit with a given wellhead composition. The topside facilities of offshore LNG production plant will be very similar to the process adopted in offshore processing platform along with the typical onshore LNG production plant. However, the process design problems associated with FPSO motion to be taken care of while developing floating LNG production plant.

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Near optimal production scheduling for multi-unit batch process

  • Kim, Kyeong-Sook;Cho, Young-Sang
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1991년도 한국자동제어학술회의논문집(국제학술편); KOEX, Seoul; 22-24 Oct. 1991
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    • pp.1718-1723
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    • 1991
  • The determination of a production sequence is an important problem in a batch process operation. In this paper a new algorithm for a near optimal production sequence of N product in an M unit serial multiproduct batch process is proposed. The basic principle is the same as that of Johnson's algorithm for two-unit UIS system. Test results on a number of selected examples exhibit the superiority over previously reported results. In addition, a tabulation technique is presented to calculate the makespan of a given sequence of production for all processing units under UIS mode.

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LIGA 방식을 적용시킨 Microlens 적용 Back Light Unit 개발 (Back Light Unit using a Micro-lens Fabricated by the Modified LIGA Process)

  • 박정호;성기성;윤석주;하수용;이규현;황철진;전석희
    • 한국광학회:학술대회논문집
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    • 한국광학회 2004년도 하계학술발표회
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    • pp.70-71
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    • 2004
  • Back light unit(BLU) using a microlens fabricated by the modified LIGA process for the liquid crystal display(LCD) is proposed, and some experimental results are presented. To realize the back light unit using microlens pattern, LIGA and reflow process are used.

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A Multiple Unit Roots Test Based on Least Squares Estimator

  • Shin, Key-Il
    • Journal of the Korean Statistical Society
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    • 제28권1호
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    • pp.45-55
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    • 1999
  • Knowing the number of unit roots is important in the analysis of k-dimensional multivariate autoregressive process. In this paper we suggest simple multiple unit roots test statistics based on least squares estimator for the multivariate AR(1) process in which some eigenvalues are one and the rest are less than one in magnitude. The empirical distributions are tabulated for suggested test statistics. We have small Monte-Calro studies to compare the powers of the test statistics suggested by Johansen(1988) and in this paper.

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회분공정의 장치 고장을 고려한 동적생산계획 기법 (Rescheduling algorithms considering unit failure on the batch process management)

  • 고대호;문일
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1996년도 한국자동제어학술회의논문집(국내학술편); 포항공과대학교, 포항; 24-26 Oct. 1996
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    • pp.1028-1031
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    • 1996
  • Dynamic scheduling is very important in constructing CIM and improving productivity of chemical processing systems. Computation at the scheduling level requires mostly a long time to generate an optimal schedule, so it is difficult to immediately respond to actual process events in real-time. To solve these problems, we developed dynamic scheduling algorithms such as DSMM(Dynamic Shift Modification Method), PUOM(Parallel Unit Operation Method) and UVVM(Unit Validity Verification Method). Their main functions are to minimize the effects of unexpected disturbances such as process time variations and unit failure, to predict a makespan of the updated dynamic schedule and to modify schedule desirably in real-time responding to process time variations. As a result, the algorithms generate a new pertinent schedule in real-time which is close to the original schedule but provides an efficient way of responding to the variation of process environment. Examples in a shampoo production batch process illustrate the efficiency of the algorithms.

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