• Title/Summary/Keyword: Systems Engineering Standard

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Integrated Code Classification System for Work Sections in Standard Method of Measurement and Construction Standard Specifications (수량산출기준 및 공사시방서의 공종분류코드 통합기준 연구)

  • Kang Leen-Seok;Kwak Joong-Min
    • Korean Journal of Construction Engineering and Management
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    • v.2 no.4 s.8
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    • pp.80-91
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    • 2001
  • Considering that the classified items in the work section level can have an applicability when those items are being used to cost and specification information with consistency, the work section classification code should be applied as an Integrated code system. Our construction industry is using three work section classification systems for civil engineering projects, such as integrated construction information classification system, standard method of measurement and guide of project specification. And each standard construction specification is also using different work section classification systems. This study suggests a methodology to integrate the code systems in construction specifications with civil engineering standard method of measurement. And the methodology suggested in this study was applied to a web-based prototype system with practical specification codes.

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A Systems Engineering Process Refinement : Focused on Technical Process (시스템 엔지니어링 공통 프로세스 개선 연구 : 기술 프로세스를 중심으로)

  • Lee, Taekyong;Lee, Joong-Yoon
    • Journal of the Korean Society of Systems Engineering
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    • v.13 no.1
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    • pp.41-50
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    • 2017
  • Systems engineering is being applied to various fields of industry such as national defense, aerospace, transportation, railway, and information technology industries. But in Korea, systems engineering has been selectively applied to government-driven projects such as space rocket development projects and unmanned flight development projects. And systems engineering processes introduced from international systems engineering standards has been directly applied to those projects. Unfortunately, this application method is not recommended as it requires highly experienced systems engineers. From our previous paper, we have proposed that domain specific engineering standards should be developed to be used as references for development of organizational engineering guide, so that more successful engineering performances can be achieved. And in this paper we have proposed a refinement of systems engineering processes from international systems engineering standards as they are bases of domain specific engineering standards.

Analysis of Natural Ventilation Rates of Venlo-type Greenhouse Built on Reclaimed Lands using CFD (전산유체역학을 통한 간척지 내 벤로형 온실의 자연환기량 분석)

  • Lee, Sang-Yeon;Lee, In-Bok;Kwon, Kyeong-Seok;Ha, Tae-Hwan;Yeo, Uk-Hyeon;Park, Se-Jun;Kim, Rack-Woo;Jo, Ye-Seul;Lee, Seung-No
    • Journal of The Korean Society of Agricultural Engineers
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    • v.57 no.6
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    • pp.21-33
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    • 2015
  • Recently, the Korean government announced a new development plan for a large-scale greenhouse complex in reclaimed lands. Wind environments of reclaimed land are entirely different from those of inland. Many standard books for ventilation design didn't include qualitative standard for natural ventilation. In this study, natural ventilation rates were analyzed to suggest standard for ventilation design of venlo type greenhouse built on reclaimed land. CFD (Computational Fluid Dynamics) simulation models were designed according to the number of spans, wind conditions and vent openings. The wind profile at a reclaimed land was designed using ESDU (Engineering Sciences Data Unit) code. Using the designed CFD simulation model, ventilation rates were computed using mass flow rate and tracer gas decay method. Additionally computed natural ventilation rates were evaluated by comparing with ventilation requirements. As a result of this study, ventilation rates were decreased with increasing of the number of spans. Ventilation rates were linearly increased with increasing of wind speed. When the wind speed was $1.0\;m{\cdot}s^{-1}$, only side vent was open and wind direction was $45^{\circ}$, homogeneity of ventilation rate at 0~1 m height is the worst. Finally, chart for computing natural ventilation rate was suggested. The chart was expected to be used for establishing standard of ventilation design.

Evaluation of Floor Impact Sound Isolation in a Dry Floor System (건식 바닥구조의 바닥충격음 차단성능 평가)

  • You, Jin;Ryu, Jong-Kwan;Jeon, Jin-Young;Lee, Chung-Hwa;Kim, Chul-Hwan
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2005.11a
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    • pp.950-953
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    • 2005
  • Floor impact sounds from two different floor systems were measured. One of the two floor systems is a dry floor system (with 150mm concrete slab) and the other is a standard floor system (210mm concrete slab). Real impact sources such as jumping and running of children were used as well as standard impact sources (bang machine, impact ball and tapping machine) to evaluate sound Isolation of the two floor systems. Subjective evaluations of the floor impact sound isolation performance for the two systems were also conducted by the methods of 3 scales & 9 categories, paired comparison and semantic differentials. Measurement results indicate that floor impact sound isolation performance of the dry floor was better than that of standard floor in both cases of real and standard impact sources. The subjects in auditory experiments also evaluated the dry floor as a better sound isolation system.

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Review and Evaluation of Hand-Arm Coordinate Systems for Measuring Vibration Exposure, Biodynamic Responses, and Hand Forces

  • Dong, Ren G.;Sinsel, Erik W.;Welcome, Daniel E.;Warren, Christopher;Xu, Xueyan S.;McDowell, Thomas W.;Wu, John Z.
    • Safety and Health at Work
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    • v.6 no.3
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    • pp.159-173
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    • 2015
  • The hand coordinate systems for measuring vibration exposures and biodynamic responses have been standardized, but they are not actually used in many studies. This contradicts the purpose of the standardization. The objectives of this study were to identify the major sources of this problem, and to help define or identify better coordinate systems for the standardization. This study systematically reviewed the principles and definition methods, and evaluated typical hand coordinate systems. This study confirms that, as accelerometers remain the major technology for vibration measurement, it is reasonable to standardize two types of coordinate systems: a tool-based basicentric (BC) system and an anatomically based biodynamic (BD) system. However, these coordinate systems are not well defined in the current standard. Definition of the standard BC system is confusing, and it can be interpreted differently; as a result, it has been inconsistently applied in various standards and studies. The standard hand BD system is defined using the orientation of the third metacarpal bone. It is neither convenient nor defined based on important biological or biodynamic features. This explains why it is rarely used in practice. To resolve these inconsistencies and deficiencies, we proposed a revised method for defining the realistic handle BC system and an alternative method for defining the hand BD system. A fingertip-based BD system for measuring the principal grip force is also proposed based on an important feature of the grip force confirmed in this study.

A Study on the Development of Metadata Standard for Research Outcomes Information in Science & Technology (과학기술분야의 연구성과물정보 표준 메타데이터 개발에 관한 연구)

  • Park, Dong-Jin
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.29 no.4
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    • pp.83-90
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    • 2006
  • It has lately been difficult to share the research outcomes information due to the information system not being compatible with one another. To solve this problem, it is believed that a meta data standard needs to be developed for all the institutions to follow. This paper shows how to make the research outcome of Science and Technology R&D project a standard metadata. We first classified all the research outcome into the following seven groups: Report, Journal article, Presentation material, Book, Dissertation, Industrial rights, and Technology development. We then identified three components that constitute a standard metadata. We employed the Dublin Core Metadata Set and CERIF(Common European Research Information Format) for worldwide interoperability. This Standard can be applied in the following areas: 1) Developing a standard architecture to manage research result within the organization. 2) Designing a conceptual/logical database to measure and evaluate the research outcome. 3) Developing a metadata system for research outcome as a subsystem of an Industrial Technology MDR (Metadata Registry) System.

A Study on Standard Process of Risk Management for Defense Systems Test Works (무기체계 시험업무에 대한 리스크 관리 표준 프로세스 연구)

  • Taeheum Na;Dongeun Heo;Youngmin Kim;Jooyeoun Lee
    • Journal of the Korea Institute of Military Science and Technology
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    • v.27 no.3
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    • pp.364-374
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    • 2024
  • Today, risks created by uncertainty must be managed for successful project execution. From this perspective, applying a risk management process is very important for successful defense systems test works. This paper describes 'the implentation of risk management process for test work' carried out by DTERI's process improvement activities. In this study, the concept of risk management process, and details of the risk management process are examined through PMBOK and ISO/IEC/IEEE 15288, CMMI. After that, we defined 'Standard Process for Risk Management' of defence systems test works. And, we describe 'Risk Management Function' of DTERI's Project Management System(PMS) and the risk management process of DTERI. Finally, the effectiveness of the risk management standard process is verified through quantitative analysis.

A Review on the Blast Resistant Design for Glazing and Window Systems Subject to High-explosive Loadings (공기 중 폭발하중에 대한 창호시스템의 방폭설계 절차에 관한 고찰)

  • Huh, Young-Cheol;Chung, Tae-Young;Oh, Sung-Keun
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.20 no.12
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    • pp.1229-1235
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    • 2010
  • Anti-terrorism design for public buildings as well as military facilities is important to minimize the mass casualties from terrorist attacks. Also, well designed glazing and window systems can reduce the potential injury of human caused by scattering fragment of a glazing. In this paper, blast resistant design for glazing and window systems is investigated based on the U.S. Standard. The design procedures include minimum requirements for the design, standard practice for design evaluation of the glazing and standard test method for evaluation of the performance.

Basic consideration for assessment of Korean TTS system (한국어 TTS 시스템의 객관적인 성능평가를 위한 기초검토)

  • Ko, Lag-Hwan;Kim, Young-Il;Kim, Bong-Wan;Lee, Yong-Ju
    • Proceedings of the KSPS conference
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    • 2005.04a
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    • pp.37-40
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    • 2005
  • Recently due to the rapid development of speech synthesis based on the corpora, the performance of TTS systems, which convert text into speech through synthesis, has enhanced, and they are applied in various fields. However, the procedure for objective assessment of the performance of systems is not well established in Korea. The establishment of the procedure for objective assessment of the performance of systems is essential for the assessment of development systems for the developers and as the standard for choosing the suitable systems for the users. In this paper we will report on the results of the basic research for the establishment of the systematic standard for the procedure of objective assessment of the performance of Korean TTS systems with reference to the various attempts for this project in Korea and other countries.

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Fuzzy Learning Control: Application to an Industrial Polymerization Reactor

  • Seokho-Yi;Park, Sunwon-
    • Proceedings of the Korean Institute of Intelligent Systems Conference
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    • 1993.06a
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    • pp.1106-1108
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    • 1993
  • This paper deals with an industrial application of a fuzzy feedback combined learning control to an industrial batch free radical polymerization reactor. As a result, the plant has reduced the batch reaction time by 50 minute and stabilized both by 40 percent reduction of the standard deviations of product qualities, such as the total solid content and the graft gum, and by 45 percent reduction of the standard deviation of the batch reaction end time.

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