• Journal of the Korean Data and Information Science Society
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• v.13 no.1
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• pp.17-23
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• 2002

Microsoft's component technology, COM, is introduced and a COM object for generating distribution numbers is implement ed. Examples using the object in various language environments are given. A strategy for statistical software development using components is discussed.

• Proceedings of the Korean Information Science Society Conference
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• 2000.10a
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• pp.489-491
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• 2000

컴포넌트 기반의 소프트웨어가 개발되어짐에 따라 소프트웨어공학 측면에서 컴포넌트 기반의 소프트웨어 개발을 위한 컴포넌트 기반 소프트웨어공학(CBSE: Component Based Software Engineering)에 대한 연구가 진행되고 있다[1]. 컴포넌트 기반의 소프트웨어를 개발하는데 있어서 최대한 효율성과 생산성을 증가시키기 위해서는 개발초기, 즉 요구사항 분석단계에서 기존에 개발되어진 컴포넌트들 중에 사용자가 요구하는 역할을 수행하는 적절한 후보 컴포넌트를 추출할 수 있어야 한다. 따라서 본 논문에서는 XML의 특성을 활용한 요구사항과 컴포넌트 명세 언어를 정의하고 이를 통해 정형화된 요구사항으로부터 시스템 개발에 필요한 컴포넌트들을 추출하는 방안을 제시하고자 한다.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10d
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• pp.70-72
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• 2002

컴포넌트 기반 구조의 프레임 워크인 샤모아 프레임 워크(Chamois Framework)는 다양한 컴포넌트 아키텍쳐중 COM(Component Object Model)과 Web Service로 개발되었다. 컴포넌트 기반 소프트웨어 개발(Component-Based Software Development)은 이미 작성된 소프트웨어 컴포넌트를 자신의 목적에 맞도록 재사용함으로써 여러 가지 위험 요소가 따를 수 있다. 따라서, 샤모아 프레임 워크에서 맞춤으로 변형된 컴포넌트에서 발생하는 오류를 테스트하기 위한 컴포넌트 맞춤 테스트 기법이 필요하다. 본 논문에서는 컴포넌트 맞춤 테스트 기법을 오류삽입 기반의 COM으로 확장하여 COM 컴포넌트 맞춤 테스트 기법을 샤모아 프레임 워크에 적용한 사례를 보인다.

• The KIPS Transactions:PartD
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• v.11D no.3
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• pp.671-682
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• 2004

As new and diverse information technologies are being introduced and software complexity is increased, software development cost and efforts are also sharply increased. Component-Based Development (CBD) technology is appealing as a new way to reduce the cost and effort by increasing reusability and maintainability. Component in CBD has variability infernally which enables customization of the component within the specific domain. A component user can easily set up internally variability parts though Required interface which is provided by the component. Enterprise JavaBeans (EJB) is utilized as a commercial standard to implement Java-based components. However, EJB constructs are limited in directly implementing Required interfaces of coarse-grained components［8］. In this paper, we define Required interface and propose interface-storage technique, class-storage technique, interface-generation technique, and Plug -in technique for implementing required interface of component. Interface-storage technique stores variable value in Required interface and class-storage technique take the Bean containg variability as Required interface without modification of component model. Interface-generation technique generates new Bean which takes the role of Required interface for component variability and Plug-in technique sets up component variability that component user plugged-in variable part externally The proposed four techniques conform to the semantics of CBD component interface and enable the implementation of high quality components.

• Journal of computational fluids engineering
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• v.16 no.2
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• pp.30-48
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• 2011

A three-dimensional thermal-hydraulic code, CUPID, has been developed for the analysis of transient two-phase flows at component scale. The CUPID code adopts a two-fluid three-field model for two-phase flows. A semi-implicit two-step numerical method was developed to obtain numerical solutions on unstructured grids. This paper presents an overview of the CUPID code development and assessment strategy. The governing equations, physical models, numerical methods and their improvements, and the systematic verification and validation processes are discussed. The code couplings with a system code, MARS, and, a three-dimensional reactor kinetics code, MASTER, are also presented.

• Journal of Digital Contents Society
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• v.9 no.2
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• pp.165-175
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• 2008

Currently, software development methods have been advanced to service-oriented from component-oriented, to component-oriented from object-oriented. The component-oriented and service-oriented software development methods are analyzed by object-oriented UML model. So, the efficient analysis method for object-oriented UML model needs. In this paper, we suggest the analysis guideline and process based on event using Input Data-Process-Output Data Table for identifying use cases and classes efficiently. And the suggested method complements the problems depending the developer's perspective and experience.

• Journal of Internet Computing and Services
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• v.6 no.4
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• pp.1-7
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• 2005

Web-Based instruction system implemented according to CGI based process-oriented. But, in case of system development, theses method is able to take inefficiency with duplication of program code. Also, ofter the development, it takes difficult on the operation and management. In this research, I implement Web-based score processing system by component composition. Applied component model is Java Beans and composition method is to use Chiron-2 architecture. By this method, this research shows the high efficiency - not only structural advance but also low value of cyclomatic complex that measure a maintenance.

• Proceedings of the Korea Multimedia Society Conference
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• 2001.06a
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• pp.317-320
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• 2001

SECOS(SoonChunHyang E-Commerce System)는, CBD(Component Based Development) 방식에 따라 개발된 컴포넌트들을 이용하여 새로운 응용 시스템을 개발하는 CBSD(Component Based Software Development)기법을 이용하여 구축된, 웹 기반 정보활용의 전형적 모델을 제공키 위한 개방형 프레임워크에 기반을 둔 소프트웨어 시스템이다. 현재 본 연구팀은 SECOS의 적용 사례로서 B-to-C 기반 E-Business를 위한 쇼핑몰을 구축하고자, 검색 및 지불 그리고 응용분야의 S/W 컴포넌트들을 개발 중에 있다. 본 논문에서는 전체적인 SECOS 의 구성에 대한 이해를 돕고자, SECOS의 내부구조 및 그에 따른 컴포넌트들 그리고 그들간의 상호관련에 대하여 설명하고 있으며, 아울러 새로운 쇼핑몰 구축시, SECOS의 프레임워크 및 컴포넌트들을 활용하기 위한 방안에 대해 살펴보고자 한다.

• Proceedings of the IEEK Conference
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• 2003.07b
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• pp.1015-1018
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• 2003

As increasing the size and complexity of hard-ware and software system, more efficient design methodology has been developed. Especially design-reuse technique enables fast system development via integrating existing hardware and software. For this technique available hardware/software should be prepared as component-based parts, adaptable to various systems. This paper introduces a component-based VHDL analyzer allowing to be embedded in other applications, such as simulator, synthesis tool, or smart editor. VHDL analyzer parses VHDL description input, and performs lexical, syntactic, semantic checking, and finally generates intermediate-form data as the result. VHDL has full-features of object-oriented language such as data abstraction, inheritance, and polymorphism. To support these features special analysis algorithm and intermediate form is required. This paper summarizes practical issues on implementing high-performance/quality VHDL analyzer and provides its solution that is based on the intensive experience of VHDL analyzer development.

• International Journal of Railway
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• v.4 no.3
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• pp.70-73
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• 2011

Controlling the exterior and interior noise emission has become an important issue in the research and development of high speed trains. As the operating speed of the train increases, the noise emission characteristics are expected to deviate from that of the existing trains due to several changes in the basic train layout. For train speed in excess of 350 km/h in particular, the aerodynamic noise component starts to exceed the structure-borne noise component, and even an incremental speed increase is accompanied by a rapid elevation in the noise level. The present study presents an engineering approach for predicting the aerodynamic noise level at the design stage for high speed trains. The experimental noise measurements from test run of Korean high speed train under development are presented as a partial validation of the proposed approach. While the overall aerodynamic noise can be cast in a single power law relationship against the train speed, different parts of the train show power law relationships unique to each component.