• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.32 no.3
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• pp.102-110
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• 2004

A design code validated against the thermal analysis results of CFD and published RTE code for a regeneratively cooled combustion chamber has been developed. The major function of the code is to predict the regenerative cooling performance and stress of the chamber wall. Adopted are the empirical correlation for the evaluation of the heat transfer coefficient of hot gas and coolant, and theoretical formula for the fin effect of the channel rib. The hot-gas-side wall temperature from the present code shows 100 K difference at most compared to RTE results. It shows less than 10 % difference for the heat flux thrall through the chamber wall and hot-gas-side convective heat transfer coefficient. The major cause of the wall temperature difference is due to the underestimation of the fin effect of the channel rib.

• Journal of the Institute of Electronics Engineers of Korea SC
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• v.47 no.6
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• pp.73-79
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• 2010

The number of electronic embedded software in vehicle system is ever increasing for years. As a result, the electronic control units have been growing dramatically, and it is required to mutual link between these units. Due to separate API each and every embedded platform, it is difficult to develop and integrate in automotive industry. The AUTOSAR project consists suppliers and manufacturers, and the partnership is a standardized platform to establish and develop an industry standard. On the previous works, we implemented the RTE generated module design based on AUTOSAR architecture. This paper specifically focuses on the testing of the development tool that generates RTE source code. The result satisfied a need for a RTE requirements and AUTOSAR methodology in a vehicle applications.

• KIPS Transactions on Software and Data Engineering
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• v.8 no.9
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• pp.349-354
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• 2019

s programming education becomes more important in recent years, it is necessary to learn how the source code written by students reflects Object-Oriented(OO) concepts. We present a tool called the Round-Trip Translator(RTT) that transforms the Unified Modeling Language(UML) class diagram and Java source code to provide a web-based environment that provides real-time synchronization of UML and source code. RTT was created by improving existing RTE and is a tool for students who are learning OO concepts to understand how their UML or source code reflects the concepts that user intended. This study compares the efficiency and user- friendliness of RTT with the existing Round-Trip Engineering-based tools. The results show that students have improved understanding of OO concepts through UML and source code translation by using the RTT. We also found out that students were satisfied with the use of the RTT, which provides more efficient and convenient user interface than the existing tools.

• Proceedings of the Korea Information Processing Society Conference
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• 2007.05a
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• pp.581-584
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• 2007

RTE(Real Time Enterprise)라는 경영 기법이 21 세기에 대두 되면서 많은 기업들이 환경을 구축하기 시작 하고, 보험사들도 ERP 구축을 통하여 RTE 환경을 이루고자 노력하고 있다. 본 논문에서는 한국 보험사에 구축된 사례를 바탕으로 관리 회계 관점에서의 ERP 와 Legacy 시스템간의 인터페이스를 분석하였다. 이를 통해 유지 보수 단계의 문제점과 시스템 자원 이용의 비효율성 및 시스템 확장에 대한 요구 사항을 쉽게 수용 할 수 없는 구조로 구축 되었음을 알 수 있었다. 이에 대한 해결책으로써 Data Hub 신설 및 코드 항목의 독립 등을 포함한 효과적인 모델을 제시 하며, 그 결과로Disk 이용을 26 % 절약 하고, 유지 보수의 용이성 및 시스템 확정의 용이성을 확보 할 수 있다.