• Title, Summary, Keyword: DoDAF

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Abstracted Meta-model for Effective Capabilities Portfolio Management (CPM)

  • Lee, Joongyoon;Yoon, Taehoon;Park, Youngwon
    • Journal of the Korea Society of Systems Engineering
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    • v.7 no.1
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    • pp.31-41
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    • 2011
  • The purpose of this paper is to provide an abstracted meta-model for executing Capabilities Portfolio Management (CPM) effectively based on DoDAF2.0. The purpose of developing an architecture is for beneficial use of it. A good set of architectural artifacts facilitates the manipulation and use of them in meeting its usage objectives well. Systems engineering methodologies evolve to accommodate or to deal with enterprise or SoS/FoS level problems. And DoD's Capabilities Portfolio Management (CPM) is a good example which demonstrates enterprise or SoS level problems. However, the complexity of the architecture framework makes it difficult to develop and use the architecture models and their associated artifacts. DoDAF states that it was established to guide the development of architectures and to satisfy the demands of a structured, repeatable method for evaluating alternatives which add value to decisions and management practices. One of the objectives of DoDAF2.0 is to define concepts and models usable in CPM which is one of DoD's six core processes. However, DoDAF and various guidelines state requirements for CPM rather than how to. This paper provides methodology for CPM which includes process and tailored meta-models based on DoDAF Meta Model (DM2).

The Development of Carrier Aviation Support System Architecture using DoDAF (DoDAF를 이용한 항모 항공지원시스템 아키텍처 개발)

  • Lee, Seung Do;Park, Peom
    • Journal of the Korea Society of Systems Engineering
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    • v.11 no.1
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    • pp.33-39
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    • 2015
  • This paper describes a development of aircraft carrier aviation support system architecture using DoDAF. The aircraft carrier, a warship performing a role of mobile sea air base in offensive and defense mission, is super system that is comprised of carrier itself and carrier-based airwing. Performing critical role in step with aviation operations in carrier-airwing interactions, the aviation support system of aircraft carrier is also system of systems. It requires a complex and integrated approach based on systems engineering in establishing concept of this complex systems. In this view, this study establishes an operational scenario and derives operational requirements by identifying aviation operations environment on deck of aircraft carrier. The study presents the operational architecture of the carrier aviation support system by using DoDAF and CASE tool CORE.

Analysis of the operating factors of dissolved air flotation (DAF) process for effluent quality improvement from aquaculture rearing tank (양식장 배출수 수질관리를 위한 용존공기부상 공법의 운전 인자 영향 분석)

  • Ki, Jae-Hong;Kim, Hyoung-Jun;Lee, Ju-Young;Han, Moo-Young;Gang, Hee-Woong
    • Journal of Korean Society of Water and Wastewater
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    • v.26 no.1
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    • pp.107-113
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    • 2012
  • Pollutants in aquaculture system effluent mostly originated from solid wastes including uneaten feed and excreta of cultured species. In this research, DAF(Dissolved Air Flotation) unit is suggested as an integrated solid control unit especially as a form of IIBG(Inline Injection Bubble Generation) process in aquaculture system. Solid removal performance of DAF unit was examined under various operation and salinity conditions with turbidity and suspended solid. Solid waste removal efficiencies were found to be affected by operation conditions including saturator pressure, recycle ratio, coagulant concentration. Solid removal efficiency was higher under higher saturator pressure and recycle ratio under which condition larger number of bubbles is generated. Coagulant is thought to have important role in creating bubble-particle aggregate by showing better removal efficiency with higher concentration. However higher saline water showed less effectiveness in removing solids by DAF(IIBG). Application of DAF(IIBG) process also showed additional effect in phosphate removal and DO(Dissolved Oxygen) supply. Phosphate existed in polluted water was removed up to 46% after treatment, which is thought to attribute to aluminium phosphate precipitation. And DO concentration was found to increase over 50% of initial saturation concentration after the injection of micro-bubbles. Through experiments on solid removal from aquaculture effluent, DAF(IIBG) process is estimated to be effective solid control method. This property can help aquaculture system being installed and operated simply and effectively.

A Study on the Enterprise Architecture to Develop the Requirements for Railway Safety Support information Systems (철도안전정보 지원시스템의 요구사항 개발을 위한 엔터프라이즈 아키텍처 활용 연구)

  • Lee, Byoung-Gil;Lee, Jae-Chon
    • Journal of the Korean Society for Railway
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    • v.10 no.6
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    • pp.751-757
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    • 2007
  • This paper is concerned with the development of the requirements for railway safety support information systems. The five safety elements at the system level have been modeled based on the enterprise architecture approach. Specifically, the modeling has been carried out as follows. First, the requirements are derived according to EIA-632 process. Also, the possible scenarios on the accident-investigation-support are developed from the help of relevant personnel in the area. The developed scenarios are reflected in modeling the operational and system architectures of DoDAF approach using a CASE tool. From this architecture model, we can easily get the specifications required for the operations. These results can give the improved understanding of the railway safety system to the members of diverse teams and areas working for the system development.

A Study on Safety Coordination for a Complex System Comprised of Interoperable Systems Utilizing DoD Architectural Framework (상호운용성을 요구하는 복합시스템 개발에서 DoD 아키텍처 프레임워크를 활용한 안전성 확보에 관한 연구)

  • Kim, Young-Min;Lee, Jae-Chon
    • Journal of the Korea Safety Management and Science
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    • v.15 no.1
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    • pp.1-10
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    • 2013
  • The recent trend in the war fields on the globe may be characterized by the network-centric warfare, which would, in turn, make the concept of weapon systems be changed. To this end, the concept of system of systems (SoS) has been introduced in literature. An SoS is a collection of multiple systems, each of which is an independent system and can be interoperable with each other. Thus, in defense domain each SoS is a big weapon system as a whole operated in actual environment and each element of it is also an independent smaller weapon system, but they should be interoperable via network among each other. The safety results studied for each elementary system alone may not be fully applicable to the whole SoS. As such, the objective of this paper is to study how to make the SoS safety requirements be distributed down over the interoperable elementary systems. Since handling the interoperability requires a technique of systems architecture, a standard method called the DoD Architectural Framework (DoDAF) has been used here to derive a solution. Using DoDAF, the safety requirements were first analyzed in the operability environment. The results were then studied to be included in an integrated model of both the systems design and safety processes. A further study of present paper would facilitate ensuring safety in the development of SoS weapon systems in practice.

A Study for Application of DAF Technology to Remove Chrolophyl-a and Dissolved Organic Compound in Yongdam Reservoir (용담호소 내 Chlorophyl-a와 유기물 저감을 위한 부상기법 적용 연구)

  • Dockko, Seok;Lee, Hyungjib
    • Journal of Korean Society of Water and Wastewater
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    • v.20 no.2
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    • pp.303-309
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    • 2006
  • Yongdam reservoir located in Jeoliabuk-do has had a lot of concerns for its algal blooming since it has started to fill water. Many water utilities near Yongdam area use reservoirs even though they have some problems with certain algae that cause tastes and odors and clog filters. In this research, dissolved air flotation (DAF) technology was examined for feasibility for removal of algae. OAF can save the capital cost for its compactness, because its hydraulic loadings (overflow rates) are 10 times higher than sedimentation, and hydraulic detention times are much shorter, typically 5 to 15 minutes. As a result of this research, PAC is effective rather than Alum to DAF for pretreatment. Higher DOC plays an important role to change zetapotential negatively to inhibit destabilization of particle to coagulation. The length of pipeline to carry pressurized water into reactor does not affect reaction.

A Study for Modeling Combat System Architecture With UPDM and UML (UPDM&UML을 이용한 함정전투체계 모델링 방안에 대한 연구)

  • Park, Ji-Eun
    • Proceedings of the Korean Society of Computer Information Conference
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    • pp.21-24
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    • 2017
  • 본 논문은 함정 전투체계의 아키텍처를 설계하고 세부 기능을 분석 및 구현하기 위한 방안 연구를 위해 작성되었다. 함정 전투체계와 같이 복잡도 높은 대규모 시스템에서 문서 산출물에 근거한 개발은 산출물 간 유기적인 연결이 어렵고 요구조건의 변화에 따른 영향 요소 식별 및 반영이 어렵다는 단점을 갖는다. 이에 대한 대안으로 제시된 모델 기반 개발 방법론을 함정 전투체계에 적용하기 위해 미 국방 분야 표준 아키텍처인 DoDAF와 이를 지원하는 UPDM, 시스템 엔지니어링과 소프트웨어 엔지니어링 분야의 모델링을 지원하는 SYSML/UML을 살펴보고 함정 전투체계에 적합한 모델 구성 및 각 개발 단계 별 모델링을 수행하는 절차에 대한 가이드라인을 제시한다.

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On an Approach to Developing the Operational Architecture for a Railway Safety Information System (철도안전 정보시스템의 운영아키텍처 개발 방법론)

  • Kim, Tae-Hyun;Lee, Jae-Chon
    • Journal of the Korea Safety Management and Science
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    • v.9 no.6
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    • pp.9-17
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    • 2007
  • This article addresses the question of how the operational architecture for a railway safety information system should be developed. A successful railway safety information system can be developed by fully reflecting the business process and needs at the enterprise level. To date, there has been minimal research effort towards the development of the operational architecture for a railway safety information system. To this end, a variety of enterprise architectures have been studied so far. In this paper, as an important guideline, DoDAF (Architecture Framework) is selected to be used in developing a railway safety information system. In particular, we propose a method to implement the operational architecture based on DoDAF.

An improvement to seismic design of substation support structures

  • Mohammadi, Reza Karami;Akrami, Vahid;Nikfar, Farzad
    • Structural Engineering and Mechanics
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    • v.45 no.6
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    • pp.821-835
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    • 2013
  • The acceleration that the electrical equipment experiences on a structure can be several times the ground acceleration. Currently, substation support structures are being designed according to ASCE (Substation Structure Design Guide 2008), without any consideration about effects of these structures on dynamic behavior of mounted equipment. In this paper, a parametric study is implemented in order to improve seismic design of candlestick substation structures based on this design guide. To do this, dynamic amplification factor (DAF) of different candlestick support-equipment combinations is evaluated and compared to the target DAF presented in IEEE STD 693 (2006). Based on this procedure, a new criterion is developed to restrict maximum acceleration at support-equipment intersection.

A Study On Operational Architecture Development Method for Railway System Safety Assessment (철도 안전성 평가를 위한 운용 아키텍처 개발 방안 연구)

  • Jang, Jae-Deuck;Park, Young-Won
    • Journal of the Korean Society for Railway
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    • v.11 no.1
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    • pp.101-106
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    • 2008
  • Recently, Architecture Frameworks are used to develop Information Management System (IMS). This paper describes an operational architecture development method for railway system safety assessment. using DoDAF (Department of Defense Architecture framework). The need of IMS is increasing to perform safety assessment task effectively and efficiently as safety-critical system like railway System. It is necessary that operational architecture based IMS requirements generated fir safety assessment. ARP(Aerospace Recommended Practice)4761 are referred to develop safety assessment operational architecture applicable to railway system. Firstly, schema and template was developed to perform the operational architecture development process using a commercial CASysE(Computer-Aided Systems engineering) tool, CORE. Not only the operational architecture allows building flexible IMS, but also helps business process solving.