• Journal of KIISE
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• v.43 no.10
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• pp.1104-1114
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• 2016

Software is continuously changing during development and after development. When a change is required, it is difficult to precisely grasp the scope of impact intuitively. A systematic method is needed to accomplish the required change. The purpose of impact analysis on software change is to avoid missing any information by recognizing the ripple effect that the change might cause. This paper proposes a dynamic method that can easily identify the scope of change request by using the association between use-case scenarios and artifacts of UML modeling in object-oriented development environment. By using this approach, the scope of impact that the change might have on other components such as class diagram and sequence diagram in use-case scenarios can be identified by forward tracing. In addition, analysis of influence of possible further changes due to changes in other components can be identified iteratively through backward tracing. The results of this paper are not limited to impact analysis on artifacts and change type. They can also be used as basic guidelines during impact analysis for various change requests.

• Journal of KIISE:Software and Applications
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• v.30 no.3_4
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• pp.202-211
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• 2003

Abstract Formal definitions of syntax and semantics for the static and dynamic models in Object Oriented methods are already defined. But the behavior of interacting objects is not formalized. In this paper, we defined the common behavior of interacting objects in terms of process algebra using sequence diagram in UML and regularized properties of interacting objects. Based on the results, we can develop a formal specification by. using of the object interaction instead of the existence dependency suggested by M. Snoeck and G. Dedene[9].

• Proceedings of the KSR Conference
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• 2006.11b
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• pp.947-953
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• 2006

ATC on-board equipment require realtime embedded software with high level of safety and reliability. To satisfy these requirements, many techniques are applied to the development of software during the lifecycle. In case of software modeling, object-oriented methodology is widening its niche replacing traditional structured methodology and modeling in UML using a CASE tool is a growing trend. In this paper, we modeled ATC on-board software in UML using Rhapsody, which is a modeling tool for realtime embedded software. We modeled the behavior of ATC on-board equipment based on state machine diagram and validated the model using the animation feature provided in the tool. According to our study, the CASE tool based on UML showed high level of applicability in modeling and verifying the software with complex behavioral characteristics.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.11c
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• pp.1601-1604
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• 2003

XML(eXtensible Markup Language) 프로그램이나 XML을 이용한 B2B 시스템 구축과 같은 XML 프로젝트에서는 객체 지향적 설계언어인 UML을 이용해 개발하면 효율을 높일 수 있다. UHL(Unified Modeling Language)로 XML문서 구조를 표현하는 이유는 XML문서를 생성, 접근, 수정하는 XML프로그램을 체계적이고 효율적으로 설계할 수 있기 때문이다. DTD(Document Type Declaration)와 스키마(Schema)를 UML로 표현함으로써 프로그래밍을 통합적으로 추진 할 수 있다. 이러한 과정에서 XML의 문서 구조정보의 활용 증대와 UML의 확장이라는 이점을 취할 수 있다. 본 논문에서는 UIML 기반의 다이어그램에서 XML 문서서로의 변환기에 대한 모델을 제안한다.

• Journal of the Korea Computer Industry Society
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• v.6 no.3
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• pp.551-558
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• 2005

Although OMG gives a textual semantics for UML activity diagrams, some ambiguities can be caused due to the lack of rigorous semantics. That is to say it is difficult to present precise semantics which is taken as important in workflow system with the guide provided by OMG to the n activity diagram. In this paper, the alternative approach of using Abstract State Machine(ASM) to formalize UML activity diagrams is presented. It suggested that ASM semantics is extended corresponding the workflow system characteristics.

• Proceedings of the Korea Information Processing Society Conference
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• 2010.11a
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• pp.218-221
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• 2010

본 논문은 범정부 엔터프라이즈 아키텍처(EA)의 메타모델을 UML 다이어그램을 이용하여 개선 연구에 관한 논문이다. 여러 공공기관과 기업에서는 '범정부 정보기술아키텍처 적용'이란 전자정부 로드맵 과제로 정보기술을 그들의 경영혁신을 위한 전략적 도구로 도입하였으며, 조직 전체의 최적화 및 통합, 조직의 진화관리, 조직업무의 효율성 및 효과성 등을 제공하는 방법으로 EA를 개발 및 적용하고 있다. 하지만 EA 프레임워크에서 제안하는 메타모델들은 단순한 네모 박스와 선으로 연결된 의미가 부족한 메타모델들을 제안하고 있다. 본 논문에서는 메타모델에 의미를 부여하는 작업으로 UML 다이어그램을 이용한 새로운 메타모델 다이어그램들을 제안한다. UML에서 사용된 의미를 가진 다이어그램을 범정부 엔터프라이즈 아키텍처의 메타모델에 적용함으로써 의미적인 메타모델의 다이어그램을 통해 보다 의미 전달이 용이한 메타모델로 사용되어 질 수 있을 것이다.

• International Journal of Computer Science & Network Security
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• v.23 no.7
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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.

• International Journal of Computer Science & Network Security
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• v.24 no.6
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• pp.180-186
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• 2024

A common language for modelling 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 in order 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 heighted to indicate class diagram component and make students to understand the textual descriptions. The experimental results indicate significant improvement in students learning skills. Furthermore, majority of students also positively responded to the survey conducted in the end experimental study.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2011.10a
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• pp.382-386
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• 2011

It has been required to develop a defect detection system to perform defect detection capabilities after the bonding process in the production of RFID tags. However, we are difficult to design a system with understanding the characteristics of RFID tags and design concepts. Also we are difficult to modify even minor changes in features. In this paper, we design the defect RFID detection system using UML and object-oriented design techniques. We suggest the method for apply the UML Diagram to LabVIEW OOP and the technique for redesign the effect detection system's changes.

• The Journal of Information Systems
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• v.13 no.1
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• pp.77-95
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• 2004

According to the increase of organizational complexity and the change of rapid information technology environment, many firms have shifted their information technology(IT) strategy from developing information systems in-house to purchasing application software such as Enterprise Resource Planning(ERP) Systems. Marketing and Sales functions within a Korean automotive part company include developing new assembly products, determining pricing, taking customer's orders, and shipping assembly products to customers. Marketing and Sales Information System(MSIS) in ERP system plays an important role in next Production Planning process. MSIS also makes management reporting and decision making faster and more uniform throughout an organization. MSIS promotes thinking about corporate goals, as opposed to thinking only about the goals of a single department or functional area. This paper intends to design and implement a MSIS in ERP systems for Korean automotive part company using object-oriented methodology In order to accomplish the implementation of MSIS in ERP system, we employed UML as its standard modeling language. In this study, four diagramming techniques such as use case diagram, sequence diagram, class diagram, component diagram among eight modeling techniques are used for analyzing hierarchical business process. In traditional marketing and sales function, a company with an unintegrated information system can have marketing and sales data that is data redundant or inaccurate. MSIS integrated in ERP system can solve the sales forecast problem, which minimizes the total costs of production, inventory, and transportation under constraints of production capacity. Also, the use of UML methodology makes S/W programmers shorten the phase of analysis and design in the implementation of MSIS system, and increase the reuse of software and the interoperability with corporate internal Information system.