• 제어로봇시스템학회:학술대회논문집
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• 1986.10a
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• pp.158-163
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• 1986

This article surveys techniques and issues related to real time process control system developed for industrial control applications. It covers the system architecture and software engineering issues such as the design of data structures, scheduling of asynchronous task activities, management of shared resources, handling of interrupt and implementing an user friendly man-machine interface. Also problems associated with implementing a real-time system that supports dynamic configuration of data base is addressed.

• Proceedings of the Korean Information Science Society Conference
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• 2000.10a
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• pp.495-497
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• 2000

CBD(Component-Based Development)는 이미 존재하는 소프트웨어 컴포넌트를 조립함으로써 시스템을 개발하는 방법이다. 컴포넌트를 이용하여 시스템을 개발하는 것은 개발시간과 비용을 줄이고, 생산성을 향상시키는 등 여러 가지 장점을 가진다. 그러나 여러 벤더에 의해 개발된 컴포넌트를 조립하는 것은 쉬운 일이 아니다. 이를 위해 컴포넌트가 어떤 문맥에서 사용되는지 이해하는 것이 필요하며 이 문맥은 아키텍쳐에 의해 결정된다. 따라서 본 논문에서는 컴포넌트 기반 개발을 위한 도메인 아키텍쳐를 제안한다. 도메인 아키텍쳐는 도메인을 구성하는 컴포넌트와 그들간의 관계에 대한 정보를 제공함으로써, 어플리케이션 개발을 쉽게 한다. 또한 도메인 아키텍쳐는 관련된 여러 시스템을 위한 아키텍쳐이므로, 도메인 아키텍쳐 상의 컴포넌트는 재사용이 높다.

• Journal of the Semiconductor & Display Technology
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• v.19 no.1
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• pp.23-28
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• 2020

In Smart mobile devices embedding big.LITTLE architectures, the conventional multi-core assignment scheme for user applications may incur wasteful energy consumption and long response time. In this paper, we propose a user experience assisted energy-efficient multicore assignment scheme. Our simulation results show that the proposed scheme achieves at 40% less energy consumption and at 20% less response time comparing to the legacy scheme.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10b
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• pp.469-471
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• 1998

소프트웨어 아키텍쳐의 정의는 소프트웨어 생명주기의 시금석과 같아서 수명주기 전반에 많은 영향을 미칠 수 있다. 특히 대규모의 소프트웨어를 짧은 시간에 개발할 경우, 기존 소프트웨어의 유지보수나 소프트웨어 부품의 재활용이 절실하게 요구되는 상황에서는 더욱 중요하다. 본 논문에서는 소프트웨어 아키텍쳐를 컴포넌트, 포트, 커넥터, 그리고 제한사항 등으로 정의하고, 이렇게 정의한 아키텍쳐를 시각적으로 표현함으로서 소프트웨어 개발의 효율성과 재사용성을 높이고자 하였다. 시각적으로 표현된 소프트웨어 아키텍쳐는 그 내용이 LOTOS 행위를 만족 시켜서 정형적 표현이 가능하며, 이러한 정형 명세에 대한 확인, 검증을 통해서 소프트웨어 아키텍쳐의 연결, 결합이 가능하여 소프트웨어 아키텍쳐 수준의 재사용성을 확인할 수 있다.

• Proceedings of the IEEK Conference
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• 2001.06e
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• pp.147-150
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• 2001

This paver has presented the architecture and function of the traffic signal enforcement system to detect and capture a image of the violating car in the street intersection. Also in the paper, the algorithm and method of detecting the violation car have been presented and the microwave detection method has been explained. And then this paper has showed the operation software interface for system and presented the experiment data carried out in the field.

• Journal of Internet Computing and Services
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• v.11 no.1
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• pp.143-151
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• 2010

According to increasing requirements in embedded systems. embedded software has been more complicated then before. a optimum software is difficult in embedded system. software developer make a difficult optimum software. this paper suggests a software profiling tool with which a software developer can easily profiling the embedded system software in cross-development environments. the suggested tool is designed based on host/target architecture. this tool insert program source for make profiling log to target program. a target program executed in target system. a target system communicate profiling log to host system. this tool in host system analyze profiling log data. and make a XML of profiling log and a profiling report. a profiling report is graphic viewer based GUI. a target system in this tool needs a few computing power. and XSLT can conversion of profile log XML to other format data. and suggested tool based on eclipse plug-in, therefore developer can use operates in eclipse.

• Smart Media Journal
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• v.1 no.1
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• pp.1-9
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• 2012

This Paper proposes an effective SoC hardware architecture implementing a VDP for Full HD TVs. The proposed architecture makes real time video processing possible with supporting efficient bus architecture and flexible interface. Video IP cores in the VDP are designed to provide a high quality of improved image enhancement function. The Avalon interface is adopted to guarantee real-time capability to IPs as well as SoC integration. This leads to reduced design time and also enhanced designer's convenience due to the easiness in IP addition, deletion, and revision for IP verification and SoC integration. The embedded software makes it possible to implement flexible real-time system by controlling setting parameter details and data transmitting schemes in real-time. The proposed VDP SoC design is implemented on Cyclon III SoPC platform. The experimental results show that our proposed architecture of the VDP SoC successfully provides required quality of Video image by converting SD level input to Full HD level image.

• Journal of IKEEE
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• v.25 no.3
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• pp.571-577
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• 2021

This paper describes ISO/TR 4804, an international standard to describe how to design and verify autonomous cars to ensure safety and cybersecurity. Goals of ISO/TR 4804 are (1) positive risk balance and (2) avoidance of unreasonable risk. It also 12 principles of safety and cybersecurity to achieve these goals. In the design procedures, it describes (1) 13 capabilities to achieve these safety and cybersecurity principles, (2) hardware and software elements to achieve these capabilities, and (3) a generic logical architecture to combine these elements. In the verification procedures, it describes (1) 5 challenges to ensure safety and cybersecurity, (2) test goals, platforms, and solutions to achieve these challenges, (3) simulation and field operation methods, and (4) verification methods for hardware and software elements. Especially, it regards deep neural network as a software component and it describe design and verification methods of autonomous cars.

• Steel and Composite Structures
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• v.16 no.2
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• pp.117-133
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• 2014

Natural vibration of truss cable structures is analyzed based upon the general structural analysis software ANSYS, energy variational method and Rayleigh method, the calculated results of three methods are compared, from which the characteristics of free-vibration are obtained. Moreover, vertical seismic response analysis of truss cable structures is carried out via time-history method. Introducing three natural earthquake waves calculated the results including time-history curve of vertical maximal displacement, time-history curve of maximal internal force. Variation curve of maximal displacement of node along span, and variation curve of maximal internal force of member along span are presented. The results show the formulas of frequencies for truss cable structures obtained by energy variational method are of high accuracy. Furthermore, the maximal displacement and the maximal internal force occur near the 1/5 span point. These provide convenient and simple design method for practical engineering.

• Journal of Advanced Research in Ocean Engineering
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• v.1 no.3
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• pp.176-185
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• 2015

Recently, focus has been placed on ocean energy resources because environmental concerns regarding the exploitation of hydrocarbons are increasing. Tidal current power, one of the ocean energy resources, has great potential worldwide due to its high energy density. The flow velocity is the most crucial factor for the power estimation of TCP(Tidal Current Power) system since the kinetic energy of the flow is proportional to the cube of the flow speed. So sufficient inflow speed to generate electricity from the tidal current power is necessary. A duct system can accelerate the flow velocity, which could expand the applicable area of TCP systems to relatively lower velocity sites. The shapes of the inlet and outlet could affect the flow rate inside the duct. To investigate the performance of the duct, various ducts were preliminary designed considering the entire system that is single-point moored TCP system and a series of simulations were carried out using ANSYS-CFX v13.0 CFD software. This study introduces a ducted turbine system that can be moored to a seabed. A performance estimation and comparison of results with conventional tidal converters were summarized in this paper.