• 한국시뮬레이션학회:학술대회논문집
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• 한국시뮬레이션학회 1997년도 춘계 학술대회 발표집
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• pp.23-28
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• 1997

We discuss development of a simulator for automated manufacturing systems (AMSs) which have sophisticated automated material handling equipments and complicated work flows. The simulator is designed to satisfy the following requirements. A user should be able to easily configure or specify an AMS through a graphical user interface (GUI) and minimal data input. The user should be able to model diverse and complied control logic for automated material handling systems like automated guided vehicle (AGV) systems, robot workcell systems and conveyor systems as well as complicated job flow program. Real time animation is desired. Finally, the simulator should be easily maintained and extended. To satisfy the requirements, we use an object-oriented paradigm for modeling, designing, and programming of the simulator. We use an object-oriented modeling framework to design the modeling elements library, and take the process interaction approach for scheduling processes and events. To model a user-defined diverse control logic, we also develop a script language and its interpreter. We explain design and implementation strategies. We implement the simulator using Visual C++ 4.2 and Open GL on Windows NT and the Windows95. Some modeling examples will be demonstrated.

• International Journal of Computer Science & Network Security
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• 제21권7호
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• pp.284-296
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• 2021

Quality Models are important element of the software industry to develop and implement the best quality product in the market. This type of model provides aid in describing quality measures, which directly enhance the user satisfaction and software quality. In software development, the inheritance technique is an important mechanism used in object-oriented programming that allows the developers to define new classes having all the properties of super class. This technique supports the hierarchy design for classes and makes an "is-a" association among the super and subclasses. This paper describes a standard procedure for validating the inheritance metric in Quality Model for Object-Oriented Design (QMOOD) by using a set of nine properties established by Weyuker. These properties commonly using for investigating the effectiveness of the metric. The integration of two measuring methods (i.e. QMOOD and Weyuker) will provide new way for evaluating the software quality based on the inheritance context. The output of this research shows the extent of satisfaction of the inheritance metric in QMOOD against Weyuker nine properties. Further results proved that Weyker's property number nine could not fulfilled by any inheritance metrics. This research introduces a way for measuring software that developed using object-oriented approach. The theoretical validation of the inheritance metric presented in this paper is a small step taken towards producing quality software and in providing assistance to the software industry.

• 한국IT서비스학회지
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• 제10권4호
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• pp.219-227
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• 2011

Service Oriented Architecture (SOA) is rapidly emerging as the efficient approach in contemporary complex, heterogeneous computing environments. SOA increases the adaptability by loose coupling and its main feature is that three elements such as service provider, service requester and service registry are connected with each other systematically. To design the service-oriented system efficiently, a metric to measure the coupling between services accurately is needed. In this paper, we propose four coupling metrics for SOA based softwares. First, we suggest a coupling metric for service-oriented systems by modifying an established coupling metric of object-oriented systems. Then we suggest another coupling metric which includes indirect coupling between services. 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 an industrial-scale case study.

• 정보처리학회논문지D
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• 제16D권5호
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• pp.747-754
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• 2009

소프트웨어 프로덕트 라인은 일련의 관련된 시스템들, 즉 도메인 내에서 재사용될 가능성이 높은 공통된 부분들을 식별하고, 시스템마다 상이하게 나타나는 가변적 요소들의 분석을 통해 핵심 자산을 생성하는 방법이다. 이러한 프로덕트 라인 개념은 객체 및 컴포넌트 기반의 소프트웨어 개발 패러다임에 적용되어 소프트웨어 개발의 생산성을 증대시켰다. 최근 들어 소프트웨어 개발의 패러다임은 서비스라는 핵심 자산을 이용하여 소프트웨어를 개발하는 서비스 지향 패러다임으로 변화하고 있다. 따라서 이러한 패러다임하에서 비즈니스 변화에 민첩하게 대응하고, 체계적이고 유연한 서비스 지향 소프트웨어 개발을 할 수 있도록 핵심 자산인 서비스 생성 방법은 프로덕트 라인 기법을 적용시킬 필요가 있다. 본 논문에서는 서비스 지향 패러다임과 프로덕트 라인의 결합을 통해 소프트웨어 개발의 핵심 자산인 도메인 서비스를 개발하고 기술하는 방법에 대해 제시한다. 도메인 서비스는 도메인 서비스 공통적/선택적 속성 가변성, 오퍼레이션 타입의 가변성, 메시지 타입의 가변성을 통해 공통성과 가변성이 명확히 기술되도록 한다. 본 논문에서 제시하는 방법을 통해 유사한 기능을 가진 도메인 서비스를 목적에 맞게 커스터마이즈하여 다양한 서비스를 생성하게 함으로써 서비스 지향 개발을 유연하고 효율적으로 수행할 수 있다.

• Journal of Information Processing Systems
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• 제9권4호
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• pp.567-574
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• 2013

In this paper, we have proposed an architectural solution for a system for the visualization and modification of large amounts of data. The pattern is based on an asynchronous execution of programmable commands and a reflective approach of an object structure composition. The described pattern provides great flexibility, which helps adopting it easily to custom application needs. We have implemented a system based on the described pattern. The implemented system presents an innovative approach for a dynamic data object initialization and a flexible system for asynchronous interaction with data sources. We believe that this system can help software developers increase the quality and the production speed of their software products.

• 대한공간정보학회지
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• 제10권5호
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• pp.17-28
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• 2002

Time is regarded as an essential feature of land information enabling to track historical landmarks of land uses, ownerships, and taxations based on cadastral maps. Object-oriented temporal modeling helps to simulate and imitate time-varying cadastral data in a chronological and persistent manner. The aim of study is to analyze the role of temporal cadastre tracing footprints of foregoing events in response to various needs and demands associated with historical information of cadastral transactions. In this paper, temporal cadastral object model (TCOM) is proposed to delineate object version history. As an evidence of a new approach and conceptual idea for the importance of temporal cadastre, a part of spatio-temporal processes is illustrated to explain major changes of cadastral map. The feasibility and application of the approach is confirmed by proof-of-concept of temporal cadastre in land information management.

• International Journal of Fuzzy Logic and Intelligent Systems
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• 제10권2호
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• pp.101-106
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• 2010

We propose an approach to estimate the real-time moving trajectory of an object in this paper. The object's position is obtained from the image data of a CCD camera, while a state estimator predicts the linear and angular velocities of the moving object. To overcome the uncertainties and noises residing in the input data, a Extended Kalman Filter(EKF) and neural networks are utilized cooperatively. Since the EKF needs to approximate a nonlinear system into a linear model in order to estimate the states, there still exist errors as well as uncertainties. To resolve this problem, in this approach the Kohonen networks, which have a high adaptability to the memory of the inputoutput relationship, are utilized for the nonlinear region. In addition to this, the Kohonen network, as a sort of neural network, can effectively adapt to the dynamic variations and become robust against noises. This approach is derived from the observation that the Kohonen network is a type of self-organized map and is spatially oriented, which makes it suitable for determining the trajectories of moving objects. The superiority of the proposed algorithm compared with the EKF is demonstrated through real experiments.

• 정보화연구
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• 제11권3호
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• pp.333-345
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• 2014

지식관리시스템은 조직 내 지식 자산을 효과적으로 관리하고 그 효용을 극대화하기 위해 도입하는 정보시스템이다. 엔지니어링 분야의 경우 해당 분야 전문가의 지식과 노하우에 절대적으로 의존하는 경우가 대부분이므로 지식관리시스템의 도입 효과가 매우 클 것으로 예상된다. 본 논문에서는 엔지니어링 분야에서 조직 내 지식을 효과적으로 관리하고 공유하기 위해 필요한 지식관리시스템의 분석 및 설계를 수행하였다. 건설 및 자동차 분야의 실무 전문가를 대상으로 수행한 조사를 통해 엔지니어링 지식관리시스템의 구축 수요와 구축 시 성공요인을 도출하였으며 이를 기반으로 분석 및 설계과정에 객체지향 접근방식을 도입하였다. 건설과 자동차 분야를 기준으로 엔지니어링 지식관리시스템의 사용자 요구사항 도출, 지식맵 설계, 시스템 설계 및 정보 흐름 분석을 수행하였으며 다양한 엔지니어링 분야에 적용 가능한 유연한 시스템 모형을 제안하였다.

• 정보처리학회논문지D
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• 제10D권5호
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• pp.859-872
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• 2003

클래스계층구조는 객체지향 소프트웨어의 중심적인 구성요소가 되며, 따라서 이에대한 품질은 매우 중요하다. 좋은 품질을 갖춘 클래스계층 구조를 구축하는 것은 객체지향 소프트웨어 개발에 있어서 매우 중요한 작업이지만, 좋은 품질의 클래스계층구조를 구축하는 작업은 수월하지 않다. 더욱이, 반복 및 점증적인 소프트웨어 개발에 있어서, 요구사양에 적합하도록 개발중인 클래스계층구조를 재구성하거나 세련시키는 작업이 빈번히 발생한다. 따라서, 객체지향 개발자들이 이와같은 클래스계층구조의 재구성 작업을 수행할 경우에 도움이 될 수 있는 기법 및 도구들에 대한 관심이 증가하고 있다. 본 논문에서는, 클래스계층구조의 복잡도를 일정수준 측정가능한 몇가지 평가척도를 제안하고, 이러한 평가척도들을 바탕으로 클래스계층구조를 재구성하는 알고리즘들을 정의한다. 또한, 각 알고리즘들에 대하여, 알고리즘을 적용하기 전과 후의 각 클래스계층구조들로부터 생성할 수 있는 객체들의 집합이 변화하지 알고 보존됨을 증명하였다. 본 논문에서 제안하는 재구성기법은 클래스계층구조의 구축 및 재구성 등의 지침으로서 사용할 수 있으며, 이러한 평가척도들을 기반으로 하는 클래스계층구조의 재구성 알고리즘들은 객체지향 소프트웨어 개발시에 유용한 도구로서 개발자들에게 도움이 될 수 있다.

• 한국실내디자인학회논문집
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• 제21권1호
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• pp.111-118
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• 2012

The purpose of this study is to classify the epistemological critique between philosophy and architecture. Although there are various interpretations and criticism about the architecture, the fundamental critique of architecture is difficult. It is necessary to approach by the philosophic paradigm rather than architectural one. Therefore the procedure and method of study is to define the epistemology within philosophy and architecture, and present the classification viewpoint and the architecture case. The conclusions of this study based on purpose and process are as follows : The First, the philosophic epistemology is to mean the unity of subjective and objective. And the epistemological viewpoint of architectural philosophy is to define the construction's universality. The second, the architectural philosophy is a kind of the philosophy of art, and It is associated with the basis of aesthetics. Thus, the category of architectural philosophy like the aesthetics is classified with function directivity and form directivity, content directivity. The Last, epistemological critiques between philosophy and architecture are as follows ; 1) subject-object-integrated recognition critique (function directivity), 2) object-oriented recognition critique (form directivity), 3) subject-oriented recognition critique (content directivity).