• Journal of the Korean Society of Systems Engineering
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• v.12 no.2
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• pp.69-80
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• 2016

The purpose of this study is to establish a component reutilization system in Nuclear Power Plant (NPP) by Object-Oriented Systems Engineering Method (OOSEM). Unified Modeling Language (UML) is mainly used for OOSEM. Operational Concept (OpsCon), Use cases, Structure Diagrams, and Behavior Diagrams are developed to analyze stakeholders needs, system requirements, logical architecture, and physical architecture. Based on the current decommissioning and purchasing system of the component, some activities from their systems were excepted and additional new activities were developed for a component reutilization system.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10d
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• pp.58-60
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• 2002

최근 XML 문서가 급증함에 따라 웹-기반 XML 응용 문서의 중요성이 많이 부각되고 있는 실정이다. 웹-기반 XML 응용 문서의 대표적인 예로 OSD, CDF가 있다. OSD 포맷은 소프트웨어 패키지와 그들간의 관계를 정의하는 것으로 CDF 문서 등에서 많이 사용되고 있다. 그러나 아직까지 이에 대한 객체 모델링이 제안된 바 없어, 소프트웨어를 재사용하려는 사람들마다 별도의 양식으로 이들 관계를 표현하고 있는 실정이다. 따라서, 본 논문은 UML의 다양한 관련성을 이용하여 OSD와 CDF 문서를 클래스 다이어그램으로 표현하고자 한다. 이를 위한 CDF와 OSD로부터 글래스 다이어그램 구성 요소로의 사상 규칙과 알고리즘을 제안한다. 본 연구의 의의는 소프트웨어 패키지간의 구현과 실체 관계를 UML 형태로 일관되게 표현하고 클래스 다이어그램 형태로 출력하여, 객체지향적인 문서 관리의 기반이 되도록 하는 것이다.

• The KIPS Transactions:PartD
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• v.12D no.1 s.97
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• pp.111-120
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• 2005

Software development creates many product that class components, Class Diagram, form, object, and design pattern. So this Paper suggests Index/XML Sequence Relation information system for product abstraction and classification, the system of design product Sequence Relation abstraction which can store, reuse design patterns in the meta modeling database with pattern Relation information. This is Index/XML Sequence Relation system which can easily change various relation information of product for product abstraction and classification. This system designed to extract and classify design pattern efficiently and then functional indexing, sequence base indexing for standard pattern, code indexing to change pattern into code and grouping by Index-ID code, and its role information can apply by structural extraction and design pattern indexing process. and it has managed various products, class item, diagram, forms, components and design pattern.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10c
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• pp.246-248
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• 1998

본 논문에서는 대화형 시스템을 시험하기 위한 시험 사례를 마코프 연쇄의 통계적 확률 과정으로 생성하는 방안을 제시한다. 객체지향 방법론의 통합안인 UML에서는 클래스도(Class Diagram)가 표현할 수 없었던 시스템의 동적인 관점을 상태 전이도(State Transition Diagram)는 구체적으로 표현할 수 있다. 시스템의 사용법을 상태 전이도로 표현하고, 상태간의 전이 확률(Transition Probability)을 계산하여 사용법 연쇄(Usage Chain)를 구성한다. 사용법 연쇄는 다음 상태가 과거의 상태에 영향을 받지 않고 현시점의 상태에만 의존하는 이산 시간형 확률과정인 마코프 연쇄(Markov Chain)가 된다. 본 논문에서는 사용법 연쇄를 분석하여 상태 전이도의 상태와 원호가 어떤 범위에서 시험될 것인지 결정되었을 때, 사용법 연쇄의 전이 확률이 높은 순서별로 연결하여 시험 사례를 생성하는 방안을 제시하고, 예제를 설명한다.

• Proceedings of the KSR Conference
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• 2010.06a
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• pp.448-454
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• 2010

Currently a KTX train of 20-car formation is 388m long and carries 931 passengers including one captain and three crews which is quite a few to cover the lengthy service area and many customers. On the other hand, if a passenger wants to talk to an attendant, he has to wait for an attendant passing by his/her seat or walk to an intercom which is placed at every other car. Any of these choices is inconvenient. So, in this paper, we presented a system design for developing an audio/visual communication system for a passenger and an attendant. The system was analyzed and designed according to the Object-Oriented methodology with UML (Unified Modeling Language). Based on a problem statement, a Use-case Diagram, Sequence Diagrams, Class Diagram, State Charts, collaboration Diagram were generated. The design will be used in system implementation to a HEMU-400X test train and to be tested.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.24 no.7
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• pp.857-865
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• 2020

This paper presents a method for code generation of UML sequence diagrams based on message patterns. In the sequence diagrams, it is shown that messages are some types of forms typically. This paper classifies according to type as three patterns, and construct meta-information for code generation analysing structural infomation for each patterns. The meta-message of structural information (MetaMessage) is stored in the MetaMessage datastore and the meta-method information from the MetaMessage is stored in the MetaMethod datastore. And then, the structural information of MetaClass and MetaObject is constructed in each datastore too. For each pattern, this paper presents a method for code generation based on the meta information of message patterns and the syntax of target progamming language. Also, branching and looping that has been seldom handled integratedly in the previous works are handled as same as the basic patterns by classifying the branching pattern and the looping pattern for code generation integratedly.

• Journal of Korea Multimedia Society
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• v.7 no.3
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• pp.293-307
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• 2004

The SMIL(Synchronized Multimedia Integration Language) documents are represented as logical structure information, spatial layout structure information, temporal synchronization structure information and hyperlink structure information, according as the structural characteristics of SMIL documents based on XML. This paper proposes the effective modeling and query method for the multi -structure information of inherent SMIL documents. In particular, we present the object-oriented modeling by using UML class diagram in order to represent the objects classes for the structured information of SMIL documents, and the hierarchical structure and the relationships for the objects classes. In addition, the objects classes definition is specified in compliance with SQL3 for database standard language. We also propose the access method and the query representation for hierarchical structure in order to retrieve efficiently the structural objects of SMIL documents.

• Journal of Korea Society of Digital Industry and Information Management
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• v.7 no.3
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• pp.37-42
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• 2011

Nowadays software developers are moving from conventional software process technologies to the object-oriented paradigm. To develope the object-oriented softwares efficiently, various software metrics have been suggested. Coupling refers to the degree of independence between components of the system. It has long been well known that good software practice calls for minimizing coupling interaction. Many researches have been studied coupling metrics of the object- oriented systems. We review Chidamber and Kemerer's work & Li's work. In this paper, we study the coupling of the overall structures of object-oriented systems by analyzing the class diagram of UML. We propose four coupling metrics for object-oriented softwares. First, we use an established coupling metric for object- oriented systems as a basic coupling metric. Then we modify the basic coupling metric by including indirect coupling between classes, We also suggest two relative coupling metrics to measure coupling between subsystems. We investigate the theoretical soundness of the proposed metrics by the axioms of Briand et al. Finally, we apply the presented metrics to a practical case study. This coupling metric will be helpful to the software developers for their designing tasks by evaluating the coupling metric of the structures of object-oriented system and redesigning tasks of the system.

• The KIPS Transactions:PartC
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• v.14C no.5
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• pp.453-462
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• 2007

NGN is a packet-based converged network to support session and non-session based services in QoS-enabled broadband transport technologies. Resource and admission control functions(RACF) of NGN have been considering COPS and SNMP as resource management protocols to collect network topology and resource status information of transport network. This paper defines requirements of resource management in NGN transport network, and proposes protocol independent information model to keep consistency of data models of each resource management protocol. Based on this information model described with UML class diagram, we designed and implemented NGN resource management system on Web Services.

• Journal of Korea Multimedia Society
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• v.7 no.9
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• pp.1304-1311
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• 2004

SMIL supports synchronization and nice screen form environments among various multimedia data. Thus it is utilized widely in the fields of internet virtual lecture, internet broadcasting, and so on. Those kinds of system which can be applied flexibly in spite of the change of environments are required continuously with important issue, and depending upon the trends the function of SMIL is upgraded step by step. In this paper main function of SMIL is analyzed and modeled depending upon object oriented methodology. Also I propose some class model which is inspired iron service combinator. Suggested class model can be tuned by user easily if he wants to optimize system environments.