• Title/Summary/Keyword: Systems Architecture

Search Result 5,104, Processing Time 0.038 seconds

Plans for systematizing Railway Safety Regulations using a New Model for Railway Safety System Architecture (철도안전시스템 아키텍처 모델링을 통한 안전규제 체계화 방안 연구)

  • Park Young-Su;Cho Yeon-Ok;Hong Seon-Ho
    • Proceedings of the KSR Conference
    • /
    • 2005.11a
    • /
    • pp.7-14
    • /
    • 2005
  • A Structure of a system is usually described as same as an architecture, but they are basically different. The architecture has a broader meaning than a system structure. In other words, an architecture can include many of system structures. So, to define the architecture, we need to consider how functions of a system are consisted and integrated. The architecture defined is applicable to railway safety management systems, and it can be made as a new model for railway safety systems, which is useful to systematize railway safety regulations. To establish the architecture as applicable to railway safety regulations, it is required to compare between regulation relations by analyzing roles before/after executing railway safety regulations. Therefore, in this research, we reviewed and classified different types of regulation conditions and safety requirements for railway systems and a variety of conditions before/after railway safety regulations changes are compared by defining system architectures subject to National railway safety.

  • PDF

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

  • Lee, Seung Do;Park, Peom
    • Journal of the Korean Society of Systems Engineering
    • /
    • v.11 no.1
    • /
    • pp.33-39
    • /
    • 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.

Agent-based Collaborative Simulation Architecture for Distributed Manufacturing Systems (분산 생산 시스템을 위한 에이전트 기반의 협업 시뮬레이션 체계)

  • Cha Yeong Pil;Jeong Mu Yeong
    • Proceedings of the Korean Operations and Management Science Society Conference
    • /
    • 2003.05a
    • /
    • pp.808-813
    • /
    • 2003
  • Maintaining agility and responsiveness m designing and manufacturing activities are the key issues for manufacturing companies to cope with global competition. Distributed design and control systems are regarded as an efficient solution for agility and responsiveness. However, distributed nature of a manufacturing system complicates production activities such as design, simulation, scheduling, and execution control. Especially, existing simulation systems have limited external integration capabilities, which make it difficult to implement complex control mechanisms for the distributed manufacturing systems. Moreover, integration and coupling of heterogeneous components and models are commonly required for the simulation of complex distributed systems. In this paper, a collaborative and adaptive simulation architecture is proposed as an open framework for simulation and analysis of the distributed manufacturing enterprises. By incorporating agents with their distributed characteristics of autonomy, intelligence, and goal-driven behavior, the proposed agent-based simulation architecture can be easily adapted to support the agile and distributed manufacturing systems. The architecture supports the coordination and cooperation relations, and provides a communication middleware among the participants in simulation.

  • PDF

SOFTWARE ARCHITECTURE FOR ADAPTIVE COLLISION AVOIDANCE SYSTEMS

  • Blum, Jeremy;Eskandarian, Azim
    • International Journal of Automotive Technology
    • /
    • v.3 no.2
    • /
    • pp.79-88
    • /
    • 2002
  • Emergent Collision Avoidance Systems (CAS's) are beginning to assist drivers by performing specific tasks and extending the limits of driver's perception. As CAS's evolve from simple systems handling discrete tasks to complex systems managing interrelated driving tasks, the risk of failure from hidden causes greatly increases. The successful implementation of such a complex system depends upon a robust software architecture. Host of the difficulty in implementing system arises from interconnections between the components. The CAS architecture presented in this paper focuses on these interconnections to mitigate this problem. Moreover, by constructing the GAS architecture through the composition of existing architectural styles, the resulting system will exhibit predictable qualities. Some of the qualities represent limitations that translate into constraints on the system. Others are beneficial aspects that satisfy stakeholder requirements .

Design of an Application Framework for Information Systems Development - Aiming at Reuse and Architectural Simplicity - (정보시스템 개발을 위한 애플리케이션 프레임웍의 설계 - 재사용과 구조적 단순화를 목적으로 -)

  • Park, Kwang-Ho
    • Asia pacific journal of information systems
    • /
    • v.8 no.1
    • /
    • pp.87-102
    • /
    • 1998
  • Typical multi-tier client/server architecture includes various and complex objects scattered around the network. Those objects must be clearly identified and designed. Then, their interface must be well-defined so that the integration can be done without major difficulties. This paper presents an application framework to increase reuse and to accomplish architectural simplicity in information systems development. Each component of the architecture is identified and designed. The proposed architecture of the application framework provides the fundamental structure for developing individual functions of an information system. Resulting architectural simplicity achieves effective and efficient maintenance throughout the lifecycle of the information systems. Although the framework aims at the reuse within a project, the productivity of information systems development across projects will be greatly improved eventually. Cases are discussed to evaluate the practicality of the architecture presented.

  • PDF

An Executive Information Systems Architecture for the Air Force Using Data Warehousing (데이터 웨어하우징을 이용한 공군 EIS 아키텍처)

  • Choi, Jun-Seob;Suh, Eui-Ho;Suh, Chang-Kyo
    • Asia pacific journal of information systems
    • /
    • v.8 no.3
    • /
    • pp.1-20
    • /
    • 1998
  • We propose an Executive Information Systems (EIS) Architecture for chief officers of the Air Force using data warehousing method. This architecture has two main proposes. The one is to provide the information for chief officers to control and command their organizations effectively by analyzing operation data at normal times. The other is to provide chief officers with the information about current situation so that they may make right and rapid decisions at emergency. The architecture introduced here is one that analyzes operational trends as well as current trends in a hierarchical organization environment. System analysis and design techniques for the Air Force EIS such as data flow diagram, system structure, entity-relational diagram, and third normal form of relational database were presented. After prototype screens are demonstrated, benefits of new EIS architecture were also discussed as a conclusion.

  • PDF

A Study on Architecting Method of a Welding Robot Using Model-Based System Design Method (모델기반 시스템 설계 방법을 이용한 용접로봇의 상부아키텍쳐 정의에 관한 연구)

  • Park Young-Won;Kim Jin-Ill
    • Journal of Institute of Control, Robotics and Systems
    • /
    • v.11 no.2
    • /
    • pp.152-159
    • /
    • 2005
  • This paper describes the application of a model-based system design method critical to complex intelligent systems, PSARE, to a welding robot development to define its top level architecture. The PSARE model consists of requirement model which describes the core processes(function) of the system, enhanced requirement model which adds technology specific processes to requirement model and allocates them to architecture model, and architecture model which describes the structure and interfaces and flows of the modules of the system. This paper focuses on the detailed procedure and method rather than the detailed domain model of the welding robot. In this study, only the top level architecture of a welding robot was defined using the PSARE method. However, the method can be repeatedly applied to the lower level architecture of the robot until the process which the robot should perform can be clearly defined. The enhanced data flow diagram in this model separates technology independent processes and technology specific processes. This approach will provide a useful base not only for improvement of a class of welding robots but also for development of increasingly complex intelligent real-time systems.

Reconfigurable Multi-Array Architecture for Low-Power and High-Speed Embedded Systems

  • Kim, Yoon-Jin
    • JSTS:Journal of Semiconductor Technology and Science
    • /
    • v.11 no.3
    • /
    • pp.207-220
    • /
    • 2011
  • Coarse-grained reconfigurable architecture (CGRA) based embedded systems aims to achieve high system performance with sufficient flexibility to map a variety of applications. However, the CGRA has been considered as prohibitive one due to its significant area/power overhead and performance bottleneck. In this work, I propose reconfigurable multi-array architecture to reduce power/area and enhance performance in configurable embedded systems. The CGRA-based embedded systems that consist of hierarchical configurable computing arrays with varying size and communication speed were examined for multimedia and other applications. Experimental results show that the proposed approach reduces on-chip area by 22%, execution time by up to 72% and reduces power consumption by up to 55% when compared with the conventional CGRA-based architectures.

Web Service based Information Integration Architecture in Power Systems (웹 서비스 기반의 전력계통 정보통합 기술)

  • Bae, Jae-Kwang;Kim, Young-Kook;Lim, Seong-Il
    • The Transactions of The Korean Institute of Electrical Engineers
    • /
    • v.59 no.2
    • /
    • pp.225-231
    • /
    • 2010
  • As growth of operational complexity in power systems, necessity of information integration between automation systems such as EMS, SAS, DAS and renewable energy sources has been increased. This paper proposes a new information integration architecture between power automation systems based on web service technique. Loosely coupled feature of web service system can provide more flexible and reliable way to exchange information. Communication testing on the demonstration system has been performed to establish the feasibility of the proposed architecture.

Requirement Analysis and Architecture Design for Ubiquitous Healthcare Service Systems

  • Yang, Won-Seob;Hwang, Kyung-Soon;Lee, Keon-Myung;Lee, Kyung-Mi;Kim, Wun-Jae;Yun, Seok-Jung
    • International Journal of Fuzzy Logic and Intelligent Systems
    • /
    • v.7 no.3
    • /
    • pp.209-215
    • /
    • 2007
  • Various kind of ubiquitous healthcare services have been developed and tried in patient care and health care fields. Due to technical restrictions and not enough application practices, the service systems have been developed somewhat in ad hoc way. This paper describes the requirements for ubiquitous healthcare service systems most of which need to have and presents a ubiquitous healthcare service system architecture with which various ubiquitous healthcare services can be developed. It also introduces an application system for ubiquitous benign prostatic hyperplasia (BPH) patient care which has been developed based on the architecture.