• 한국산학기술학회논문지
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• 제1권2호
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• pp.69-74
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• 2000

중소기업의 정보화 영역은 생산정보화, 경영관리자동화, 네트워크화의 3가지 요소로 구분된다. 본 논문은 경영정보시스템을 이용하는 경영관리자동화를 주로 다룬다. 기능적으로 보면 생산, 판매, 인사, 회계 등 4개의 분야로 크게 나누어지나 대부분의 중소기업은 생산과 판매에 더 많은 주안점을 둔다. 따라서 이 두 개의 핵심 기능을 중심으로 객체지향방법론에 기반하여 통합된 정보시스템이 구축된다. 본 논문이 제안하는 단계별모델의 중요한 하나의 단계인 이 통합시스템은 단순화와 집중화의 원리를 수용했을 뿐만 아니라 객체지향패러다임을 이용하여 모듈화 및 친숙화를 구현하였다.

• 한국컴퓨터정보학회논문지
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• 제22권10호
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• pp.109-119
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• 2017

In recent through development of IOT owing to that mass stream data is being generated in variety of application complex event processing technology is being watched with keen interest as a technology to analyze this kind of real-time continuous data. However, the existing study related with complex event processing only comes to an end at simple event processing based on low-level event or comes to an end at service defect discovery with providing limited operator and so on. Accordingly, there would be limitation to provide useful analysis information. In this paper in consideration of complex event along with aspect-oriented programming an extended complex event model is provided, which is possible to provide more valuable and useful information. Specifically, we extend the model to support hierarchical event structures and let the model recognize point-cuts of aspect-oriented programming as events. We provide the event operators designed to specify the events on instances and handle temporal relations of the instances. It is presented that syntax and semantics of constructs in our event processing language including various and progressive event operators, complex event pattern, etc. In addition, an event context mechanism is proposed to analyze more delicate events. Finally, through application studies application possibility of this study would be shown and merits of this event model would be present through comparison with other event model.

• International Journal of Precision Engineering and Manufacturing
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• 제4권6호
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• pp.61-70
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• 2003

A multibody system dynamics analysis program is presented using one of the most useful programming methodologies, the object-oriented modeling, The object-oriented modeling defines a problem from the physical world as an abstract object. The object becomes encapsulated with the data and method, Analysis is performed using the object's interface, It is then possible for the user and the developer to modify and upgrade the program without having particular knowledge of the analysis program, The method presented in this paper has several advantages, Since the mechanical components of the multi-body system are converted into the class, the modification, exchange, distribution and reuse of classes are increased. It becomes easier to employ a new analysis method and interface with other S/W and H/W systems, Information can be communicated to each object through messaging. This makes the modeling of new classes easier using the inheritance, When developing a S/W for the computer simulation of a physical system, it is reasonable to use object-oriented modeling.

• 한국정보통신설비학회:학술대회논문집
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• 한국정보통신설비학회 2008년도 정보통신설비 학술대회
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• pp.573-578
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• 2008

While going through economic development for several decades, Korea has become an industrialized country, and the development of industrial technology accelerated the advent of the information opportunity era. The recent information oriented society has brought forth the development of new information communication technology that enables anybody to obtain information easily and simply, and recently power line communication technology is being developed that allows the use of the existing power line net-works as they are. Each advanced country that faced up to a riffle effect of power line communication technology that enables us to obtain information easily anywhere at anytime is engaged in fierce competition to be a leader in this technology and to preoccupy the standardization of power line communication technology. At this point, this study is to help Korea take the lead in information communication technology by proposing a direction for the standardization that Korean power line communication technology needs to head for by identifying the trend of the worldwide of power line communication technology.

• 한국재난정보학회 논문집
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• 제12권1호
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• pp.105-115
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• 2016

본 연구는 객체지향 기반의 ITS 아키텍쳐를 구축하는데 있어서 객체를 생성하는 새로운 방법을 제시하고 있다. 우리는 객체 지향적 접근방법에서 나타나는 문제점을 찾고 이를 해결하기 위하여 작업의뢰기술도 라는 새로운 객체 생성방법을 제시하였다. 이를 토대로 차량내 동적경로안내 시스템에 본 연구에서 제시된 방법을 적용하여 객체지향적 기반의 시스템 아키텍쳐를 제시하였다.

• 한국도서관정보학회지
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• 제40권1호
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• pp.297-316
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• 2009

본 연구에서는 최근 활발히 이용되고 있는 커뮤니티 주제 어휘의 특징을 선행연구인 ULIS-DL과 디지털오카야마 대백과(디지털강산대백과(デジタル岡山大百科))를 중심으로 알아보고, 이들 어휘들의 상호운용 모델을 일본의 동경도(東京都), 홋카이도(북해도(北海道)), 한국의 충청남도의 각 도청 홈페이지의 디렉토리 용어들을 이용하여 제안하였다. NDLSH(National Diet Library Subject Heading)와 NDC(Nippon Decimal Classification)를 스위칭 언어를 사용하여 다섯개의 어휘 매핑 모델을 제안하였다. 마지막으로, 각각의 모델들에 대한 평가 및 한계점에 관하여 매핑의 정확율과 재현율을 이용하여 논하였다.

• 대한공간정보학회지
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• 제5권2호
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• pp.87-97
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• 1997

수치영상의 실시간 자료처리를 위해서는 문제 영역의 모든 것을 각각의 독립적 객체로 파악하여, 모든 문제를 객체간의 메시지 전달에 의한 객체들의 동작으로 파악하려는 객체지향기법이 필요하다. 본 연구에서는 객체지향기법을 이용하여 수치사진측량용 클래스를 설계하고 클래스들 간의 계층구조를 확립하였다. 또한 클래스 라이브러리를 이용하여 근거리 사진측량에 적용하므로써 쉽게 수치사진측량 시스템이 구현됨을 알 수 있었다

• 한국멀티미디어학회논문지
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• 제9권6호
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• pp.693-699
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• 2006

Object-oriented databases (OODBs) have been adopted for managing non-standard applications such as computer-aided design (CAD), office document management and many multimedia applications. One of the major characteristics of OODBs is class hierarchy where a subclass is allowed to inherit the definitions defined on its superclasses. In this paper, I present the evaluation metrics for class hierarchy quality in OODBs. These metrics are developed to determine if a concurrency control scheme can achieve good performance or not on a given class hierarchy. I first discuss the existing concurrency control schemes for OODBs. Then I provide evaluation metrics based on structural information and access frequency information in class hierarchies. In order to discuss significance of the proposed performance metrics, an analytical model is developed. Analysis results show that the performance metrics are important factor in concurrency control performance. I consider both single inheritance and multiple inheritance. The proposed metrics can be used to provide guidelines on how to design class hierarchy of an OODB for maximizing the performance of concurrency control technique.

• 한국정보처리학회논문지
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• 제7권5호
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• pp.1426-1433
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• 2000

As distributed computing systems become popular, many modeling techniques and methods have been developed in specify the specification formally and verify the distributed/concurrent sytems. In spite of importance of communication in distributed object-oriented systems, specifying of communication method generally has not been emphasized in the design phase. One reason is due to the system designer misunderstanding, that is, a specification needs to be independent on the implementation. However, since defining communication pattern indistributed object-oriented systems is more serious than the required message passing method in the design phase. specifying the communication pattern is necessary instead of postponing until the implementation. In this paper, two formal specification techniques, temporal logic method and Petri nets method, for the communication in distributed systems are discussed. One is based on the temporal logic, which specifies the different patterns of primitive predicates. This method enable to define the underlying mechanism which can be interpreted as constraints. The Petri net method helps to specify the dynamic behavior of communicational patterns using the properties of Petri nets.

• 디지털산업정보학회논문지
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• 제6권4호
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• pp.161-170
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• 2010

This paper provides a novel approach for a user oriented system for face detection system for application developers. Even though there are many open source or commercial libraries to solve the problem of face detection, they are still hard to use because they require specific knowledge on detail algorithmic techniques. The purpose of this paper is to come up with a high-level system for face detection with which users can develop systems easily and even without specific knowledge on face detection theories and algorithms. Important conditions are firstly considered to categorize the large problem space of face detection. The conditions identified here are then represented as expressions so that application developers can use them to express various problems. Once the conditions are expressed by developers, the interpreter proposed take the role to interpret the conditions, find and organize the optimal algorithms to solve the represented problem with corresponding conditions. A proof-of-concept is implemented and some example problems are tested and analyzed to show the ease of use and usability.