• 한국컴퓨터정보학회논문지
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• 제13권3호
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• pp.65-75
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• 2008

그리드 컴퓨팅은 분산된 컴퓨팅 자원들을 서로 연결하여 방대한 양의 계산 작업을 가능케 하는 기술로써 다양한 분야에서 사용되고 또한 발전되어 왔다. 하지만 기존의 연구들은 주로 그리드 자원을 효율적으로 관리하고 사용하는 것에 초점을 두었지, 실제 그리드 환경에서 수행되는 응용 프로그램들의 정보에 대한 체계적인 이해 및 관리는 제대로 이루어지지 않았다. 따라서 응용 분야의 사용자가 그리드 컴퓨팅 환경을 사용하기 위해서는 매번 응용 프로그램의 그리드 관련 요구사항들을 구체적으로 이해하고 기술할 수 있는 전문적인 지식이 요구되었다. 본 연구에서는 이러한 문제점을 보완하기 위한 응용 프로그램 온톨로지 기반 시맨틱 그리드 관리시스템을 구현하였다. 이 시스템은 응용 프로그램들에 대한 정보와 이들이 요구하는 그리드 관련 정보를 온톨로지 형태로 구축하였다. 이를 기반으로 입력 데이터와 인수에 따른 자원 요구량 예측, 최적 자원 할당 등의 정보를 추론하고, 이 정보를 그리드 미들웨어가 다룰 수 있는 형태로 재해석할 수 있도록 하였다. 또한 본 논문에서는 구축된 시스템을 고성능 컴퓨팅 자원이 요구되는 생물정보학 분석환경 구축에 실제 적용해보고 이를 기존 시스템들과 비교함으로써 본 시스템이 유용하게 사용될 수 있음을 설명하였다.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 1997년도 추계학술대회논문집
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• pp.142-146
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• 1997

An automated surface-strain measuring system is developed in the present study, which consists of the hardware to capture and to display digital images and the software to calculate the 3-D informations of grid points. The software is implemented using the image processing technique, and includes a program for the camera calibration and the post-processor to display the strain distribution. An LDH(limitting dome height) test specimen is measured its surface-strain as an application of the present system.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 춘계학술대회 논문집
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• pp.910-917
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• 2011

CBTC(Communication Based Train Control) car-borne equipment, a part of the communication based train control system, mainly consists of automatic train protection(ATP) functions, automatic train operation(ATO) functions as well as the interface functions with other equipment including CBTC wayside equipment and train control management system etc. The CBTC car-borne software implementing ATP/ATO functions is a real-time embedded software requiring a high level of safety and reliability. To satisfy the requirements of the CBTC car-borne software, the model-based design techniques are applied with SCADE(Safety-Critical Application Development Environment) to the development of the CBTC car-borne software. In this paper, we illustrate the process modeling the car-borne ATP/ATO functions satisfying system requirement specification with system requirement management, modeling and document generation tools etc. supported by SCADE. In addition, the developed models corresponding to the ATP/ATO functions are applied to the train with CBTC car-borne equipment through its corresponding EN-50128 standards-compliant C code generated by the code generator. It is shown from the test result that the ATP/ATO models developed by SCADE work well while the trains are running in driverless operation mode.

• 한국통신학회논문지
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• 제39C권9호
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• pp.880-886
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• 2014

열차제어시스템은 최근의 컴퓨터 기술의 발달에 따른 자동화 및 지능화에 따라 소프트웨어에의 의존성이 더욱 증가하고 있으며, 동시에 소프트웨어의 오류 내재 가능성이 높아지고 실제 장애발생으로 인한 위험비용도 증가하고 있다. 이에 따라 열차제어시스템 소프트웨어의 무결성 검증이 매우 중요한 이슈가 되고 있으며, 이 중에서 열차제어 소프트웨어 기능안전성 검증을 위한 블랙박스 테스팅 도구의 필요성이 제기되고 있으나, 기존 상용도구들은 사용하기 어렵고 복잡하여 실제 현장에서 적용이 거의 되지 않고 있다. 본 논문에서는 이러한 분석을 바탕으로 열차제어시스템 소프트웨어 기능안전성 검증을 위한 실제 사용하고 있은 인터페이스를 통한 새로운 개념의 블랙박스 테스팅 도구를 제안하였다. 현재 제안한 도구의 설계 및 프로토타입이 개발되어 열차제어시스템 소프트웨어 테스팅에 시범적용 중에 있다.

• 전기학회논문지
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• 제59권4호
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• pp.779-787
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• 2010

In this paper, We introduce electrical tracking generated from surface activity associated with flow of leakage current on insulator under wet and contaminated conditions and design electrical tracking pattern recognition system by using LabVIEW. We measure the leaking current of contaminated wire by using LabVIEW software and the NI-c-DAQ 9172 and NI-9239 hardware. As pattern recognition algorithm and optimization algorithm for electrical tracking system, neural networks, Radial Basis Function Neural Networks(RBFNNs) and particle swarm optimization are exploited. The designed electrical tracking recognition system consists of two parts such as the hardware part of electrical tracking generator, the NI-c-DAQ 9172 and NI-9239 hardware and the software part of LabVIEW block diagram, LabVIEW front panel and pattern recognition-related application software. The electrical tracking system decides whether electrical tracking generate or not on electrical wire.

• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2001년도 The Pacific Aisan Confrence On Intelligent Systems 2001
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• pp.156-163
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• 2001

Business forecasting is vital to the success of business. There has been an increasing demand for building business forecasting software system to assist human being to do forecasting. However, the uncertain and complex nature makes is a challenging work to analyze, design and implement software solutions for business forecasting. Traditional forecasting systems in which their models are trained based on small collection of historical data could not meet such challenges at the information explosion over the Internet. This paper presents an agent oriented business forecasting approach for building intelligent business forecasting software systems with high reusability. Although agents have been applied successfully to many application domains. little work has been reported to use the emerging agent oriented technology of this paper is that it explores how agent can be used to help human to manage various business forecasting processes in the whole business forecasting life cycle.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2002년도 추계학술대회 논문집
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• pp.37-41
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• 2002

This study has been focused on the development of an open architecture CNC system and integration of core application technology for machine tool such as a remote monitoring/diagnosis system, NURBS interpolation, and cutting process simulation. To do this, we have developed a comprehensive CNC software including the basic HMI, screen editor, ASF, and visual builder. As a control hardware system for machine tool, the universal I/O module and CNC main unit have been developed. Then the remote monitoring/diagnosis system and NURBS interpolation have been implemented in the CNC software. The cutting simulation software will be used for enhancing the productivity of machine tools. Through a simulator and test bed, the whole technology has been verified.

• 대한임베디드공학회논문지
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• 제6권3호
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• pp.139-148
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• 2011

As the architecture of automotive software is complicated and LOC of software increases, there is an increasing demand for standard operating system. OSEK/VDX defines an industry standard for automotive operating system and middleware. This paper introduces an implementation of RTOS(OSCAR-OSEK) based on OSEK/VDX standard. For better speed of scheduling, we suggest a new method for ready queue implementation considering the characteristic of automotive application software. Also we introduce a method for improving the portability of RTOS on various MCUs. And, we show OSCAR-OSEK implementation and performance test results.

• 한국정보시스템학회지:정보시스템연구
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• 제12권1호
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• pp.87-116
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• 2003

One of the important applications for business-to-business electronic commerce is in procurement and inventory management using electronic data interchange(EDI). Using online catalogs and approved supplier lists, firms can easily create requisitions and purchasing documents. The emerging trend in EDI technology is changed from VAN(Value Added Network) based EDI to XML based EDI. This paper intends to suggest a component-based XML/EDI system using Unified Modeling Language(UML), as an application system for automobile part industry. Applying component based XML/EDI systems designed with UML methodology, we analyzed the workflow and the document on procurement process between trading partners and implemented a prototype of efficient XML/EDI system, as a surrogate of existing VAN/EDI. The result of applying object-oriented CBD(Component Based Development) technique is to minimize the risk of life cycle and facilitate the reuse of software as mentioned to limitation of information engineering methodology. It enables the interoperability with corporate legacy systems such as ERP(Enterprise Resource Planning), SCM(Supply Chain Management). This system proposes a solution to apply analysis phase and design phase in implementation of XML/EDI system. The implementation of XML/EDI system using CBD shows the ease of use in software reuse and the interoperability with corporate internal information system. The purchasing department with XML/EDI system can electronically communicate purchase orders, delivery schedules to external suppliers and interoperate with other application systems.

• IEIE Transactions on Smart Processing and Computing
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• 제5권1호
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• pp.55-62
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• 2016

In this paper, we propose a hybrid multi.system-on-chip (H-MSoC) architecture that provides a high-flexibility system in a rapid development time. The H-MSoC approach provides a flexible system-on-chip (SoC) architecture that is easy to configure for physical- and application-layer development. The physical- and application-layer aspects are dynamically designed and modified; hence, it is important to consider a design methodology that supports rapid SoC development. Physical layer development refers to intellectual property cores or other modular hardware (HW) development, while application layer development refers to user interface or application software (SW) development. H-MSoC is built from multi-SoC architectures in which each SoC is localized and specified based on its development focus, either physical or application (hybrid). Physical HW development SoC is referred to as physical-SoC (Phy-SoC) and application SW development SoC is referred to as application-SoC (App-SoC). Phy-SoC and App-SoC are connected to each other via Ethernet. Ethernet was chosen because of its flexibility, high speed, and easy configuration. For prototyping, we used a LEON3 SoC as the Phy-SoC and a ZYNQ-7000 SoC as the App-SoC. The proposed design was proven in real-time tests and achieved good performance.