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Design and Implementation of Framework Based Emulator Considering Expansion of MIDS LVT Platform
Sangtae Lee, Jongseo Kim, Sounghyouk Wi, Taegwon Lee, Seungbae Jee, Seungchan Lee
http://doi.org/10.5626/JOK.2021.48.1.61
MIDS LVT is communication equipment mounted with Link-16-based weapon systems to provide the Link-16 operating environment between weapon systems. Currently, the military operates the MIDS LVT BU1, but it will be changed to the BU2 and JTRS according to the performance improvement. The communication interface, message data format, and message composition of the MIDS LVT are different depending on the platform family (BU1/BU2/JTRS) and type (A,D,J). In this paper, we propose a framework based emulator design and implementation method that considers the MIDS LVT platform extension to improve these problems. In consideration of the quality attributes of the sw architecture, we designed a common based framework for modifiability, reusability, and extensibility. The MIDS LVT emulator comprises the MIDS LVT emulator processing, link interface processing, and monitoring tool. The MIDS LVT emulator was implemented by deriving and improving functions through the analysis of the functions of the previously developed overseas tools. Through the development of the MIDS LVT emulator, it can be used to develop and verify the developed Link-16 host system.
Design of a ModelAgent for Efficient Development of Dynamic Models
Inhan Kim, Younghwan Jeong, Won-sik Lee, Soung-Hyouk Wi, Hamin Jeong
http://doi.org/10.5626/JOK.2019.46.3.228
Dynamic models are important elements in the process of developing weapon system simulators based on the Defense Modeling and Simulation(DM&S). Also, the model’s accuracy according to the purpose of the DM&S is a very important factor, therefore the modules of the dynamic models should be modified to satisfy required model’s fidelity. The objective of this study is to design a structure of ModelAgent that can efficiently develop and manage the dynamic models. The ModelAgent is designed not only to improve reuse by encapsulating modules using object oriented language but also to be scalable to accommodate a variety of requirements by applying design patterns. Also, the ModelAgent is designed to provide a common interface that enhances portability in the development of dynamic models.
Ontology-based Approach to Determine the Conflicts between Security and Usability Requirements in the Requirements Engineering Process
http://doi.org/10.5626/JOK.2018.45.11.1142
Considering the trade-offs or conflicts between security and usability during the requirements engineering (RE) process is a complicated task. This is due to the contrary characteristics of security and usability as well as a lack of research on finding a consensus on the semantics of quality attributes, especially for security and usability. Furthermore, the number of security experts available is decreasing, while a methodology to determine the conflicts between security and usability during the RE process has not yet been developed. We, therefore, propose a novel approach to construct a three-layer ontological knowledge base by linking the keywords from definitions, criteria, and metrics of security and usability. In addition, we discuss the applicability of this knowledge base by examining two case studies with software engineering (SE) students. These case studies show that the participants using the proposed approach (Team A) can derive conflicts that are more precise compared to the participants who did not use the knowledge base (Team B). Moreover, the number of conflicts derived by Team A is half that by Team B. Regardless of the knowledge level, the proposed approach can determine the conflicts between security and usability during the RE process. Also, while practical RE studies have often been considered difficult to handle, the proposed approach can show the applicability of RE research.
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