• International Journal of Computer Science & Network Security
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• 제23권7호
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• pp.9-15
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• 2023

A common language for modeling software requirements and design in recent years is Unified Modeling Language (UML). Essential principles and rules are provided by UML to help visualize and comprehend complex software systems. It has therefore been incorporated into the curriculum for software engineering courses at several institutions all around the world. However, it is commonly recognized that UML is challenging for beginners to understand, mostly owing to its complexity and ill-defined nature. It is unavoidable that we need to comprehend their preferences and issues considerably better than we do presently to approach the problem of teaching UML to beginner students in an acceptable manner. This paper offers a hint-based approach that can be implemented along with an ordinary lab task. Some keywords are highlighted to indicate class diagram components and make students understand the textual descriptions. The experimental results indicate significant improvement in students' learning skills. Furthermore, the majority of students also positively responded to the survey conducted in the end experimental study.

• 한국컴퓨터정보학회논문지
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• 제21권10호
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• pp.115-123
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• 2016

In this paper, we propose a Model Driven Development using UML(Unified Modeling Language) in an efficient Combat System Software development methods. UML is managed by the OMG (Object Management Group) as a Unified Modeling Language. Recently, In developing the software for the system, development time is contrary to a short, while it must meet a number of requirements of our customers. If you develop a non-efficient software early, the structure of the software become more complex in proportion to the number of requirements. As a result, a serious problem in the system, such as an increase in defective products due to the lowering of the reliability and communication problems between the developer has occurred. To overcome those problems, the aim of this paper is to develop a reusable high efficient Combat System Software by applying Model-Centric Development (Not Code-Centric Development). If Combat System Software development method using the UML proposed in this paper is used, easy communication among developers can help reduce the serious errors in systems. Also, it has the advantage that the future needs of software maintenance/repair become easy by using high readability object Model.

• Nuclear Engineering and Technology
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• 제29권6호
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• pp.433-443
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• 1997

In this work, an analytic approach to the dependability of software in the operational phase is suggested with special attention to the hardware fault effects on the software behavior : The hardware faults considered are memory faults and the dependability measure in question is the reliability. The model is based on the simple reliability theory and the graph theory which represents the software with graph composed of nodes and arcs. Through proper transformation, the graph can be reduced to a simple two-node graph and the software reliability is derived from this graph. Using this model, we predict the reliability of an application software in the digital system (ILS) in the nuclear power plant and show the sensitivity of the software reliability to the major physical parameters which affect the software failure in the normal operation phase. We also found that the effects of the hardware faults on the software failure should be considered for predicting the software dependability accurately in operation phase, especially for the software which is executed frequently. This modeling method is particularly attractive for the medium size programs such as the microprocessor-based nuclear safety logic program.

• 한국정보과학회논문지:소프트웨어및응용
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• 제33권1호
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• pp.17-31
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• 2006

소프트웨어 아키텍쳐는 소프트웨어 시스템의 상위 수준 모델이다. 이러한 소프트웨어 아키텍쳐는 명료하고 엄밀한 표현을 위해 아키텍쳐 기술 언어(ADL)를 사용하여 기술된다. 하지만 대부분의 ADL들은 C2 스타일 ADL(C2SADL)처럼 소프트웨어 시스템의 개발에 필요한 요소들 중에서 특정한 관점만을 고려하여 정의되었거나 별도의 표기형식으로 배워야 하는 부담이 있기 때문에 아키텍쳐를 명세하는 언어로서 정착되지 못하였다. 반면 UML은 범용 모델링 언어로서 소프트웨어 개발의 전 과정에 일관된 표기형식과 폭넓은 지원도구들을 제공하고 있으므로 소프트웨어 개발을 위한 사실상의 표준 언어로 자리잡았다. 그러나 UML은 소프트웨어 아키텍쳐를 표현하도록 설계된 것은 아니기 때문에 UML을 사용하여 아키텍쳐를 표현하기 위해서는 UML을 확장, 변경하여야 한다. 본 논문에서는 UML2.0에 기반한 C2 아키텍쳐 모델링 언어 프로파일을 정의하였다. 정의된 C2 아키텍쳐 모델링 언어는 식당 예약 시스템을 모델링 하는데 사용되었다.

• 한국정보과학회논문지:소프트웨어및응용
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• 제33권2호
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• pp.167-185
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• 2006

소프트웨어 시스템의 상위 수준 모델인 소프트웨어 아키텍쳐는 아키텍쳐 기술 언어(ADL)를 사용하여 표현된다. 하지만 ACME와 같은 대부분의 ADL들은 별도의 표기형식으로 배워야 하는 부담이 있기 때문에 아키텍쳐를 명세하는 언어로서 정착되지 못하였다. 반면 VML은 범용 모델링 언어로써 소프트웨어 개발의 전 과정에 일관된 표기형식과 폭넓은 지원도구들을 제공하고 있으므로 소프트웨어 개발을 위한 사실상의 표준 언어로 자리잡았다. 그러나 UML은 소프트웨어 아키텍쳐를 표현하도록 설계된 것은 아니기 때문에 UML을 사용하여 아키텍쳐를 표현하기 위해서는 UML을 확장, 변경하여야 한다. 지금까지 아키텍쳐 모델링에 UML을 이용하기 위한 많은 연구가 진행되어 왔다. 하지만 지금까지의 이러한 연구의 대부분은 아키텍쳐의 핵심 개념들의 표현이 미흡했던 UML1.x에 기반하고 있으며 곧 발표될 UML2.0에서는 이전 버전에서 미흡했던 아키텍쳐 모델링에 유용한 개념들이 많이 추가되었다. 본 논문에서는 UML2.0에 기반한 아키텍쳐 모델링 언어를 정의하였다. UML2.0을 확장하여 Generic ADL을 정의하였으며 정의된 아키텍쳐 모델링 언어는 식당 예약 시스템을 모델링 하는데 사용되었다.

• 한국지능시스템학회:학술대회논문집
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• 한국퍼지및지능시스템학회 2005년도 추계학술대회 학술발표 논문집 제15권 제2호
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• pp.179-184
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• 2005

Recently, studying on modeling the emotion of a robot has become issued among fields of a humanoid robot and an interaction of human and robot. Especially, modeling of the motivation, the emotion, the behavior, and so on, in the robot, is hard and need to make efforts to use our originality. In this paper, new modeling using mathematical formulations to represent the emotion and the behavior selection is proposed for the software robot with virtual sensor modules. Various Points which affect six emotional states such as happy or sad are formulated as simple exponential equations with various parameters. There are several experiments with seven external sensor inputs from virtual environment and human to evaluate this modeling.

• 한국지능시스템학회논문지
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• 제16권1호
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• pp.37-42
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• 2006

Recently, studying on modeling the emotion of a robot has become issued among fields of a humanoid robot and an interaction of human and robot. Especially, modeling of the motivation, the emotion, the behavior. and so on, in the robot, is hard and need to make efforts to use ow originality. In this paper, new modeling using mathematical formulations to represent the emotion and the behavior selection is proposed for the software robot with virtual sensor modules. Various points which affect six emotional states such as happy or sad are formulated as simple exponential equations with various parameters. There are several experiments with seven external sensor inputs from virtual environment and human to evaluate this modeling.

• IEIE Transactions on Smart Processing and Computing
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• 제4권6호
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• pp.407-412
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• 2015

In model-based tracking, an accurate 3D model of a target object or scene is mostly assumed to be known or given in advance, but the accuracy of the model should be guaranteed for accurate pose estimation. In many application domains, on the other hand, end users are not highly distracted by tracking errors from certain levels of modeling errors. In this paper, we examine perceptual tracking errors, which are predominantly caused by modeling errors, on subjective evaluation and compare them to computational tracking errors. We also discuss the tolerance of modeling errors by analyzing their permissible ranges.

• 천문학회보
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• 제44권2호
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• pp.46.2-46.2
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• 2019

The software group in Giant Magellan Telescope Organization (GMTO) is developing the GMT Software Development Kit (SDK) for the device control and the telescope operations. The SDK is dived into the modeling and the operation defining. In the modeling process, Domain Specific Language (DSL) can validate the availability of a model and generate a skeleton code automatically. After the modeling, the developer can simply define the device operation. All devices are connected via EtherCAT, and the SDK simplifies the network connection. This presentation will give an overview of the modeling process and development examples using the GMT SDK.

• International journal of advanced smart convergence
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• 제9권4호
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• pp.124-131
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• 2020

As users of internet-based software applications increase, functional and non-functional problems for software applications are quickly exposed to user reviews. These user reviews are an important source of information for software improvement. User review mining has become an important topic of intelligent software engineering. This study proposes a user review mining method for software improvement. User review data collected by crawling on the app review page is analyzed to check user satisfaction. It analyzes the sentiment of positive and negative that users feel with a machine learning method. And it analyzes user requirement issues through topic analysis based on structural topic modeling. The user review mining process proposed in this study conducted a case study with the a non-face-to-face video conferencing app. Software improvement through user review mining contributes to the user lock-in effect and extending the life cycle of the software. The results of this study will contribute to providing insight on improvement not only for developers, but also for service operators and marketing.