• Journal of KIISE:Computing Practices and Letters
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• v.15 no.8
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• pp.547-565
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• 2009

Simulation is the imitation of some real thing, state of affairs, or process. The act of simulating something generally entails identifying certain key characteristics or behaviors of a selected physical or abstract system. And a simulator is the software or hardware tool that performs simulation tasks. When developing a simulator, the non-functional requirements such as modifiability, interoperability, and extendability should be required. However, existing studies about the simulator development focus not on such non-functional requirements but on the methodologies to build the simulation model. In this paper, we suggest the new architectural pattern for the software based simulator in consideration of such non-functional requirements. In order to define the architectural pattern, we identify the essential elements of the simulators, define relationships between them, and design the architectural structure with the elements to accommodate such non-functional requirements. According to the proposed pattern we can solve the simulation problems to combine the various simulation model components. The pattern guarantees modifiability by reconstructing the simulation model, also guarantees interoperability and extendability by adding various interfaces to the simulation model and by keeping the consistent interfacing mechanism between the simulation model components. The suggested architectural pattern can be used as the reference architecture of the simulator systems that will be developed in future.

• KIPS Transactions on Computer and Communication Systems
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• v.10 no.3
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• pp.59-70
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• 2021

With the recent advancements in the Internet of Things, context-aware system that provides customized services become important to consider. The existing context-aware systems analyze data generated around the user and abstract the context information that expresses the state of situations. However, these datasets is mostly unstructured and have difficulty in processing with simple approaches. Therefore, providing context-aware services using the datasets should be managed in simplified method. One of examples that should be considered as the unstructured datasets is a deep learning application. Processes in deep learning applications have a strong coupling in a way of abstracting dataset from the acquisition to analysis phases, it has less flexible when the target analysis model or applications are modified in functional scalability. Therefore, an abstraction model that separates the phases and process the unstructured dataset for analysis is proposed. The proposed abstraction utilizes a description name Analysis Model Description Language(AMDL) to deploy the analysis phases by each fat client is a specifically designed instance for resource-oriented tasks in edge computing environments how to handle different analysis applications and its factors using the AMDL and Fat client profiles. The experiment shows functional scalability through examples of AMDL and Fat client profiles targeting a vehicle image recognition model for vehicle access control notification service, and conducts process-by-process monitoring for collection-preprocessing-analysis of unstructured data.

• Journal of KIISE:Software and Applications
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• v.33 no.4
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• pp.388-401
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• 2006

A tool for analyzing and testing software in real-time is required for the efficient development of highly reliable real-time mobile embedded software This too] requires various technologies, such as source code based white-box test and real-time system monitoring and control. The tool also should be designed to improve reusability and portability by considering the interaction with other kinds of real-time system. This paper identifies and analyzes the functional requirements for the test tool on real-time mobile embedded software and suggests an adequate tool architecture based on the collected requirements. It also suggests the specific implementation technology and architecture design pattern to support the tool's expandability and portability.

• Journal of Navigation and Port Research
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• v.28 no.10 s.96
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• pp.917-923
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• 2004

With a rapid growing of information networks and development achievements in mobile technology the spatial information is one of the most important resources for modern daily life. But the speed of spatial information technology trends are far from the real service demands as compared to the other relevant fields, and it would be natural that this unbalanced gap between the supply and demand of spatial information technology is being resulted from the absence of appropriate modeling concepts at some extents. In this paper there would be shown a new approaching model for the spatial information system based on agent concepts, which is able to perform some spatial tasks if properly implemented afterward. And to give resonable background of the new modeling framework here also some known critics for the commonly used modeling approaches when they applied to spatial information modeling followed by several alternative requirements for a good spatial modeling framework. And also there would be some considerations for applying this approach to the marine geographic information communities.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.41 no.12
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• pp.1884-1891
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• 2016

With the various usage of civil drones, such as hobby, filmmaking and surveillance, the need for technology that safely reconstructs software for target application domains has been increasingly rising. In order to support a reliable software integration of avionic systems, the ARINC 653 standard has been proposed and adapted mainly on manned aircrafts. Therefore, applying ARINC 653 on civil drones could be desirable. Though, various researches on implementing ARINC 653 has been conducted, there are still additional requirements to apply ARINC 653 to civil drones that use various platforms and have a wide range of use. In this paper, taking account of these requirements, we implement a portable and extensible ARINC 653 and analyze its performance. We offer the portability with the OS abstraction layer that reduces dependency on a specific operating system, and provide the design that can extend internal functions, such as partition scheduler and process scheduler.

• Journal of the Korean Society for information Management
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• v.33 no.1
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• pp.33-52
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• 2016

This study was to find the display considerations of RDA resource type - content type, media type, and carrier type. The Literature review, the case study, and the survey were used as the research method. 5 display strategies were suggested in this study. First, content and carrier types were better displayed than all 3 types of RDA resources. Second, two kinds of algorithm should be considered for RDA resource icon display. One was the combination of the terms of carrier types plus content types icon. The other was the combination of carrier types icon and content types icon in which the terms reflecting types must be included. Third, the subfield of 33x must be used for the paired display of content type and carrier type of multi-types resources. Fourth, in brief display, resource type icon was better positioned on the left and upper side and in detailed display, resource types were better located in description area. Fifth, 'format' was used as display indication phrase. This study would contribute to the design for the resource display by suggesting the practical display considerations of RDA resource type.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10b
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• pp.418-420
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• 2004

무선 환경과 모바일 네트워크의 성장으로 전자 상거래에서 모바일 상거래로 발전하고 있다. 모바일 기기들을 주로 이용하게 되는 모바일 상거래는 기존의 PC 환경의 전자 상거래와 기능이나 서비스는 유사하지만 더 소형화되어 있고 PC 환경에 비해 상대적으로 작은 대역폭 환경에서 통신하게 되는 등의 여러 가지 제약점이 있다 따라서 본 논문에서는 기존의 전자 상거래와는 다른 모바일 상거래의 제약 사항들을 고려한 모바일 상거래 시스템 아키텍처 설계 방법을 제안한다.

• Electronics and Telecommunications Trends
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• v.4 no.4
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• pp.47-64
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• 1989

최근 날로 전자기기의 소형, 경량화, 다기능화와 초정밀화 추세로 기술혁신이 급속히 진전됨에 따라 이 분야의 최적 설계를 위한 부분중 열설계 기술의 중요성이 더욱 인식되고 있다. 따라서, 본고에서는 전자 부품들의 상호 접속지지체로서 기능을 가진 인쇄배선판(PCB)에서 고정도, 미세화등의 고밀도화가 점점 가중되고 있는 점을 감안하여 설계시 고려되어야 할 열설계 기술의 제반 사항에 대해 기술하였다.

• 전기의세계
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• v.34 no.5
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• pp.272-280
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• 1985

전력계통의 목표를 달성하기 위한 기본적인 요청은 시시각각으로 변동되는 전력부하를 확실하게 예측하는 일부터 시작된다. 그런데 전력부하는 온도, 습도, 광도 등 예측일의 기상요인은 물론 산업구조, 경기변동의 사회적인 요인에 의해 변화된다. 또한 온라인 예측시는 자동급전시스템의 여건이나 예측주기에 따라 각각 고려해야 할 사항이 다양하므로 정확도가 높으면서도 안정된 결정적인 예측기법을 찾기가 어렵다. 그러나 주어진 계통과 이용할 수 있는 여건을 바탕으로 했을때의 허용정도 및 자동화등 실제 적용면에서 보다 나은 예측기법은 생각될 수 있다. 필자들은 우리나라 계통을 대상으로 자동급전시스템(AGC/SCADA system)에 의해 온라인 리얼타임으로 취득해온 부하데이터를 이용하여 자유자재 (interactive)기능을 내포한 단기 부하예측 팩키지를 개발한 바 있으며 이에 소개하는 바이다.

• Information and Communications Magazine
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• v.31 no.7
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• pp.3-7
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• 2014

클라우드 컴퓨팅은 매우 확장성 있는 IT관련 기술과 기능을 제공하는 컴퓨팅 스타일의 한 가지로 다양한 사용자에게 인터넷 기술을 사용하여 'as a service'를 제공하는 것으로 정의되곤 한다. 수년 간에 걸쳐 클라우드의 장점이 계속 알려지면서, 많은 IT기업들이 경쟁력 있는 데이터센터를 구축하기 위한 모델로 클라우드를 고려하고 있다. 최적화된 클라우드 관리 플랫폼은 기업 내 혁신과 변화를 제공하게 될 비즈니스 요구사항을 만족시켜주며, 동시에 클라우드를 가장 잘 활용할 수 있도록 도움을 줄 것이다.