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  • Title/Summary/Keyword: integrated order

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Metrics for Measuring Innovation in Integrated Project Delivery

  • Lee, Tai-Sik;Swain, Saumya Ranjan;Park, Kyoung-Soon;Kim, Young-Hyun
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 2006.11a
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    • pp.322-325
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    • 2006
  • The research project evaluates different infrastructure project delivery methods used internationally. The goal is to define the main benefits, deficiencies, and requirements of the project delivery systems for both the short term and long term perspectives. Also, the research attempts to determine alternatives to modify and to promote change in the current infrastructure project delivery methods in order to make the processes more efficient with value added benefits to all participants.

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Web-Based Machine Mornitoring System Using Distributed Object Technology (분산 객체 기술을 이용한 웹 기반 기계 모니터링 시스템)

  • 차주헌;공호성
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2002.10a
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    • pp.492-496
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    • 2002
  • We present the web-based remote monitoring system using distributed object technology. In order to provide the desired functionality, the system has used CORBA(Common Object Request Architecture) and Java Servlet to implement the integrated distributed object environment. It converts the existing standalone machine monitoring system into web-based machine monitoring system. It consists of applet program, CORBA server and CORBA client. The usefulness of our system will be illustrated by the application to ICM(Integrated Condition Monitoring) System developed by KIST Tribology Center.

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A Study On Product Data Model for Central Database in an Integrated System for Structural Design of Building (구조설계 통합 시스템에서 중앙 데이터베이스를 위한 데이터 모델에 관한 연구)

  • 안계현;신동철;이병해
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 1999.10a
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    • pp.444-451
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    • 1999
  • The purpose of this study is to Propose data models for central database in integrated system for structural design building. In order to efficiently express data related to structure, I analyzed the structure design process and classified data considering design step. 1 used an object-oriented modeling methodology for logical data model and relational modeling for physical data model. Based on this model, we will develop an integration system with several applications for structure design. Each application will communicate through the central database.

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FEM analysis of the magnetic closed type RF integrated inductor

  • Seok Bae;Masahiro Yamaguchi;Arai, Ken-ichi
    • Proceedings of the Korean Magnestics Society Conference
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    • 2002.12a
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    • pp.218-219
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    • 2002
  • Recently, RF lumped-element devices are demanded strongly in application of hand-held mobile communication equipments. Many workers have been reported RF integrated inductor as well as air cores. In order to achieve the high Q value, they removed backside of substrate by micro machining process [1] and also another MEMS-like approach such as levitated structure [2]. These approaches are capable of suppressing the parasitic effects, but low reproducibility and high cost problems remain. (omitted)

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A Ka-Band 6-W High Power MMIC Amplifier with High Linearity for VSAT Applications

  • Jeong, Jin-Cheol;Jang, Dong-Pil;Yom, In-Bok
    • ETRI Journal
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    • v.35 no.3
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    • pp.546-549
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    • 2013
  • A Ka-band 6-W high power microwave monolithic integrated circuit amplifier for use in a very small aperture terminal system requiring high linearity is designed and fabricated using commercial 0.15-μm GaAs pHEMT technology. This three-stage amplifier, with a chip size of 22.1 mm2 can achieve a saturated output power of 6 W with a 21% power-added efficiency and 15-dB small signal gain over a frequency range of 28.5 GHz to 30.5 GHz. To obtain high linearity, the amplifier employs a class-A bias and demonstrates an output third-order intercept point of greater than 43.5 dBm over the above-mentioned frequency range.

Integrated Order Scheduling with Limited Production Capacity of Multiple Producers in Distribution Requirement Planning Systems ( DRPs ) (DRP 시스템에서 생산지의 생산능력을 고려한 통합발주계획)

  • Yoo, Yeong-Joon;Rhee, Jong-Tae
    • Journal of Korean Institute of Industrial Engineers
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    • v.26 no.1
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    • pp.17-26
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    • 2000
  • This paper presents an integrated order scheduling method with the improved DRP concept for multi-echelon distribution system that has the constraint of limited production capacity of producers. The proposed method reflects the dynamic characteristics of inventory level changes in the regional and central distribution center. The simulation is done with two models : the traditional DRP method and the proposed method presented in this paper. From the results, the latter is more efficient than the former in cost, customer's service level as well as balanced production load on each producer.

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Development and Application of Sewer Facility Management System (하수도 시설 관리 시스템의 개발 및 적용)

  • Kim, Joon Hyun;Han, Young Han
    • Journal of Industrial Technology
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    • v.19
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    • pp.279-285
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    • 1999
  • An integrated sewer management system was developed for the analysis of sewer flow and for optimal operation of sewer works using ArcView and SWMM. SWMM and ArcView were dynamically linked together using Avenue in order to construct user-friendly management system. The developed system was applied to a residential area in Choonchun city to verify its utilities. All the relevant field data were analyzed on the basis of developed system, and the modeling of sewer flow was implemented using RUNOFF, EXTRAN, TRANSPORT in SWMM. This system is now in the process of connection to the management system of watershed and surface environment in order to develope an integrated environmental management system. Futhermore, this system will be a critical part of overall control system of sewer works including sewer line and wastewater treatment plant. As this system can provide comprehensive prediction of flow and pollution profiles, it could serve as a tool not only for optimal management, but also for decision support system to examine the efficiency of planning and implementation of sewer projects.

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An integrated process planning system through machine load using the genetic algorithm under NCPP (유전알고리즘을 적용한 NCPP기반의 기계선정 방법)

  • 최회련;김재관;노형민
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2002.10a
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    • pp.612-615
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    • 2002
  • The objective of this study is to develop an integrated process planning system which can flexibly cope with the status changes in a shop floor by utilizing the concept of Non-Linear and Closed-Loop Process Planning(NCPP). In this paper, Genetic Algorithm(GA) is employed in order to quickly generate feasible setup sequences for minimizing the makespan and tardiness under an NCPP. The genetic algorithm developed in this study for getting the machine load utilizes differentiated mutation rate and method in order to increase the chance to avoid a local optimum and to reach a global optimum. Also, it adopts a double gene structure for the sake of convenient modeling of the shop floor. The last step in this system is a simulation process which selects a proper process plan among alternative process plans.

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An Integrated Model of SPC and EPC with Second-order Autoregressed Disturbance for the Process with Trend (추세가 있는 공정에서 이계자기회귀 각란 모형을 고려한 EPC와 SPC의 통합시스템)

  • 김종걸;정해운
    • Proceedings of the Safety Management and Science Conference
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    • 2002.05a
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    • pp.81-89
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    • 2002
  • EPC seeks to minimize variability by transferring the output variable to a related process input(controllable) variable, while SPC seeks to reduce variability by detecting and eliminating assignable causes of variation. In the case of product control, a very reasonable objective is to try to minimize the variance of the output deviations from the target or set point. We consider an alternative EPC model with second-order autoregressive disturbance. We compare three control systems; EPC, EPC combined with EWMA, and Shewhart. This paper shows through simulation that the performance of the integrated model of EPC and SPC is more preferable than that of EPC.

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Terminal-Assisted Hybrid MAC Protocol for Differentiated QoS Guarantee in TDMA-Based Broadband Access Networks

  • Hong, Seung-Eun;Kang, Chung-Gu;Kwon, O-Hyung
    • ETRI Journal
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    • v.28 no.3
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    • pp.311-319
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    • 2006
  • This paper presents a terminal-assisted frame-based packet reservation multiple access (TAF-PRMA) protocol, which optimizes random access control between heterogeneous traffic aiming at more efficient voice/data integrated services in dynamic reservation TDMA-based broadband access networks. In order to achieve a differentiated quality-of-service (QoS) guarantee for individual service plus maximal system resource utilization, TAF-PRMA independently controls the random access parameters such as the lengths of the access regions dedicated to respective service traffic and the corresponding permission probabilities, on a frame-by-frame basis. In addition, we have adopted a terminal-assisted random access mechanism where the voice terminal readjusts a global permission probability from the central controller in order to handle the 'fair access' issue resulting from distributed queuing problems inherent in the access network. Our extensive simulation results indicate that TAF-PRMA achieves significant improvements in terms of voice capacity, delay, and fairness over most of the existing medium access control (MAC) schemes for integrated services.

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