• Journal of KIISE:Computing Practices and Letters
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• v.8 no.2
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• pp.174-182
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• 2002

The object-oriented design methods and their CASE tools are widely used in practice by many real-time software developers. However, object-oriented CASE tools require an additional step of identifying tasks from a given design model. Unfortunately, it is difficult to automate this step for a couple of reasons: (1) there are inherent discrepancies between objects and tasks; and (2) it is hard to derive tasks while maximizing real-time schedulability since this problem makes a non-trivial optimization problem. As a result, in practical object-oriented CASE tools, task identification is usually performed in an ad-hoc manner using hints provided by human designers. In this paper, we present a systematic, schedulability-aware approach that can help mapping real-time object-oriented models to multi-threaded implementations. In our approach, a task contains a group of mutually exclusive transactions that may possess different periods and deadline. For this new task model, we provide a new schedulability analysis algorithm. We also show how the run-time system is implemented and how executable code is generated in our frame work. We have performed a case study. It shows the difficulty of task derivation problem and the utility of the automated synthesis of implementations as well as the Inappropriateness of the single-threaded implementations.

• Transactions of the Korean Society of Machine Tool Engineers
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• v.16 no.2
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• pp.78-83
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• 2007

In this paper, the digital model of the micro-factory has been established, inspected and evaluated by progress of assembly, manipulation and examination. The new paradigm of the system analysis is realized by digital simulation of the factory. The digital manufacturing system of the micro-factory was simulated through UML(Unified Modeling Language) with the object-oriented logical model analysis method and then the micro lens module assembly system was simulated with MST(Micro System Technology) Application Module.

• Proceedings of the Korea Society for Simulation Conference
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• 2001.10a
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• pp.354-358
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• 2001

Cosim (Hardware and Software Co-Simulator) is a JavaBeans-based simulation tool fur validating systems architecture and estimating performance of web applications. Cosim has four components: Modeler, Translator, Engine and Scenario. Users start from Modeler to describe systems architecture in UML(Unified Modeling Language) deployment diagram, and then specify hardware & software performance parameters such as execution delay, network topology, and frame size. All information specified on Modeler are sent to Translator, and then automatically converted to Java programs. Scenario is responsible to run the Java program and produce results in text reports and graphs. Developers can reduce development time and cost by validating systems architecture of web applications before the actual deployment.

• Proceedings of the Korean Information Science Society Conference
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• 2000.10a
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• pp.451-453
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• 2000

소프트웨어의 경제성, 시장 경쟁력 확보를 위한 소프트웨어의 재사용은 소프트웨어 공학의 주요 이슈가 되고 있다. 그 중 컴포넌트와 컴포넌트 기반의 소프트웨어 개발은 재사용성을 확보할 수 있는 가장 주목받는 방안으로 제시되고 있으며 많은 기법이나 지침들이 제안되고 있다. 기존의 캡슐화와 정보은폐를 핵심 개념으로 하는 OOD(Object Oriented Development)에 의한 소프트웨어 개발방법은 이미 재사용성, 유지보수성, 무결성, 안정성 등의 많은 장점으로 인해 학계와 산업계에서 이미 많이 보편화되어 있고 널리 이용되어 지고 있다. 하지만 CBD(Component Based Development)와 EJB(Enterprise Java Beans)에 기반하여 컴포넌트 어플리케이션을 개발하는데 있어서는 그 적용사례가 드물고 활요성 또한 검증된 바가 거의 없다. 따라서 본 논문에서는 대형 분산 시스템이라 할 수 있는 뱅킹 시스템에 CBD, EJB, UML(Unified Modeling Language)을 적용해 봄으로써 소프트웨어 개발시의 그 실무적인 유용성을 검증해 본다.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.11b
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• pp.1325-1328
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• 2003

구성원들이 직접 정보를 제공하고 책임지는 정보 실명제를 기반으로 모든 구성원이 손쉽게 정보를 제공할 수 있도록 CMS(Contents Management System) 형태의 UIP(University Information Portal) 시스템을 구축하였다. 또한 UML(Unified Modeling Language)과 CBD(Component Based Development) 개발 기법을 적용하여 UIP 시스템에서 사용되었던 컴포넌트들을 다른 웹 기반 시스템에서도 손쉽게 사용할 수 있도록 하여 개발 코드를 재사용 할 수 있도록 하였다.

• Proceedings of the KIEE Conference
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• 2002.11b
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• pp.253-255
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• 2002

The paper presets the improvements of MMI at the PROSET2000 correction program which is totally computerized system of the power system protection. The Base Form that is an open interface is developed to be able to compose the screen by reading the input screen from the database. It also is developed to be suitable for the environment of the Graphical User Interface instead of the DOS window when the users do the pannel settings. Program development in this paper is designed by Unified Modeling Language(UML) techniques.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.23 no.55
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• pp.107-116
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• 2000

Electronic Commerce is purchasing or sales a products and services to customers using computer network. It is different to traditional commerce. Also, It divide into business to business commerce and business to customer commerce. Cyber Shopping Mall is a representative type of business to customer commerce. The interest and demand of national business to customer commerce is explosively increasing with industry. It expect to reach 61 billion won in the 2000. Thus Structure of Cyber Shopping Mall is the more complex and the more vary types. It is the problem that change of established Cyber Shopping Mall structure is very difficult. The purpose of this study Is designed to Cyber Shopping Mall Purchase Process that deal with quickly changable internet environment and meet the needs of customers immediately using UML(Unified Modeling Language) in design phase determinant of Cyber Shopping Mal1 structure. Cyber Shopping Mall Purchase Process is designed to have objective-oriented development methodology's advantage. It has a flexibility in case of shopping mall structure change and acts as useful guideline in design phase of construction of Cyber Shopping Mall.

• 한국디지털정책학회:학술대회논문집
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• 2003.12a
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• pp.275-289
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• 2003

Most of companies related to the area of B2B electronic commerce are making their efforts to innovate their existing business process into new designed supply chain process. eSCM system using XML/EDI has potential to impact on reshaping the relationship between traditional trading partners. This study intends to suggest a prototype of eSCM system using XML/EDI. To implement eSCM system, we analyze and design the supply chain process by using Unified Modeling Language, with a firm, which is a first vendor to produce LAMP, engaged in Korean automobile industry.

• Proceedings of the Korea Society for Simulation Conference
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• 2001.05a
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• pp.49-53
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• 2001

지금까지 컨테이너터미널을 계획하면서 시뮬레이션을 이용하여 소요자원의 규모나 생산성 등을 분석하려는 연구는 많이 진행되어왔다. 그렇지만 컨테이너터미널의 구성 요소에 대한 전제 조건이 부족한 경우에 도입 가능한 다양한 컨테이너 취급 시스템과 그에 관련된 배치안 및 운영 알고리즘의 조합으로 구성되는 모든 대안들을 시뮬레이션하여 비교 평가하기 위해서는 많은 비용과 시간이 필요하다. 따라서 본 연구의 목적은 상세 분석이 필요한 대상을 선정하기 위해 개발 조건을 고려한 컨테이너터미널의 적정 처리능력, 대안별 시설 규모 및 위치 그리고 하역 장비의 종류 및 운영대수 등을 대략적으로 계획하고 시뮬레이션 분석과 운영정보가 이에 체계적으로 연결되어 효율적인 의사결정을 할 수 있게 정보와 흐름을 통합 관리하는 시스템을 설계하는 것이다. 통합관리시스템은 수행 역할에 따라 프로젝트 관리, 운영정보 관리, 능력계획, 배치계획 그리고 시뮬레이션의 모듈들로 구성된다. 본 논문에서는 각 구성모듈의 기능과 모듈간의 입출력 정보를 정의하였고 시뮬레이션에서 필요한 주요 객체 및 제어 흐름을 설계하기 위해 개체지향방법론의 표준인 UML을 이용하였다.

• Journal of The Institute of Information and Telecommunication Facilities Engineering
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• v.9 no.1
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• pp.13-18
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• 2010

As the importance of non-functional requirements has increased, many researchers have become interested in the software development process for non-functional requirements including the notation, modeling, and assessment of non-functional requirements. However, the characteristics of non-functional requirements are so sophisticated and there are many topics which have not been solved until now. In order to address one of the unsolved problems, we propose a systematic software development process to support the management of non-functional requirements. The process consists of six steps, each of which is composed of detailed activities. Using the proposed process, the non-functional requirements can be managed and modeled more effectively and systematically than previous ones.