• The Journal of Information Technology and Database
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• v.1 no.2
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• pp.3-24
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• 1994

기존의 데이타 모델 및 설계 방법론들은 실세계의 데이타 객체에 대해 고정된 한 측면의 모델 표현만을 허용하기 때문에 여러 측면으로 관측이 가능한 실세계 객체들의 표현에 어려움을 갖는다. 제시한 객체 중심 측면 모델(OOAM : Object-Oriented Entity Aspect Model)은 실세계의 각 객체에 대해 다수의 측면 표현을 가능하게 한 객체 중심의 데이타 모델로 데이타와 지식 표현에 유용한 모델이다. 데이타베이스 시스템과 지식베이스 시스템 중 어느 하나의 시스템이 다른 시스템의 특징을 빌리거나 통합할 수 있다면 두 시스템에게 서로 이득이 될 수 있다. 이러한 KB/DB(Knowledge Base/Data Base)의 통합은 최근에 객체 지향 개념과 연역 개념에 의해 연구가 활발히 진행되고 있다. 본 논문에서는 객체의 측면 개념을 제공하는 OOAM의 기본 개념을 보여주고 OOAM에 의해 구축되는 데이타베이스 스키마의 시맨틱을 분석하고 서술하기 위해 OOAM을 형식적으로 정의하였다. 그리고 KB/DB 통합에 관련된 연구들을 분석하고 데이타베이스에 관련된 지식의 종류를 서술한 후 OOAM을 사용하여 KB/DB 통합을 위한 지식베이스와 데이타베이스의 개발 방법론을 제시하였다.

• Journal of the Korea Computer Industry Society
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• v.3 no.3
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• pp.363-368
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• 2002

Electronic commerce system must provide information satisfying customers. To do this, many kinds of studies are being advanced actively about electronic commerce support system using intelligent agent technology. This paper suggests electronic commerce system using intelligent multi agent based on Case base and Log analysis. This system can provide suitable information to customers by using knowledge and traffic and system information analysis.

• Journal of the Korea Safety Management & Science
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• v.19 no.4
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• pp.283-290
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• 2017

In knowledge information society entering global unlimited competition era, our middle and small sized companies are the base of national and enterprise competitiveness and core base of national economy as an origin of jobs. The competitiveness of middle and small sized companies is so important to decide the level of the competitiveness of the whole industries, but the gap from big sized company is much low in comparison with advanced countries from angles of important factors of enterprise growth, productivity and technological competitiveness, so, it's urgent to improve the competitiveness through productivity enhancement. The purpose of this research is to do a positive study on effects of learning organization management outcomes of middle and small sized company on enterprise productivity among various types of outcome brought for strengthening of enterprise competitiveness. It confirmed learning organization has functions and usefulness as a management tool bringing positive effects on enterprise productivity through the Productivity improvement.

• Ocean Systems Engineering
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• v.9 no.2
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• pp.179-190
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• 2019

This paper deals with the problem of the global stabilization for a class of ocean structure systems. It is well known that, in general, the global asymptotic stability of the ocean structure subsystems does not imply the global asymptotic stability of the composite closed-loop system. The classical fuzzy inference methods cannot work to their full potential in such circumstances because given knowledge does not cover the entire problem domain. However, requirements of fuzzy systems may change over time and therefore, the use of a static rule base may affect the effectiveness of fuzzy rule interpolation due to the absence of the most concurrent (dynamic) rules. Designing a dynamic rule base yet needs additional information. In this paper, we demonstrate this proposed methodology is a flexible and general approach, with no theoretical restriction over the employment of any particular interpolation in performing interpolation nor in the computational mechanisms to implement fitness evaluation and rule promotion.

• ETRI Journal
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• v.39 no.4
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• pp.592-604
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• 2017

Intrusion detection is very important for network situation awareness. While a few methods have been proposed to detect network intrusion, they cannot directly and effectively utilize semi-quantitative information consisting of expert knowledge and quantitative data. Hence, this paper proposes a new detection model based on a directed acyclic graph (DAG) and a belief rule base (BRB). In the proposed model, called DAG-BRB, the DAG is employed to construct a multi-layered BRB model that can avoid explosion of combinations of rule number because of a large number of types of intrusion. To obtain the optimal parameters of the DAG-BRB model, an improved constraint covariance matrix adaption evolution strategy (CMA-ES) is developed that can effectively solve the constraint problem in the BRB. A case study was used to test the efficiency of the proposed DAG-BRB. The results showed that compared with other detection models, the DAG-BRB model has a higher detection rate and can be used in real networks.

• Journal of Biosystems Engineering
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• v.26 no.2
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• pp.141-146
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• 2001

Lots of the agricultural information come from human experiences and are in non-numerical forms. Therefore, it is difficult to process to be processed in a conventional data processing way. An internet expert system for agricultural application using the ASP(active server page) was developed to solve this problem and consisted of databases, an inference engine, and an user interface. The databases were composed of rule base, question base and link data. The inference engine was developed with the ASP for connection with web between databases. The used interface was developed with the CGI(common gateway interface), so that question could be answered on a web browser, and the session technique was used to provide proper result to each of multi-users. A prototype internet expert system was developed for diagnosis of diseases and nutritional disorders of paddy rice. The expert system was interactively worked through WWW(world wide web) at remote sites by multi-users, even at the same time. The rule base could be easily updated and modified from a web server computer by a knowledge engineer.

• Journal of the Korean Institute of Rural Architecture
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• v.4 no.1
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• pp.71-86
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• 2002

This research aims to illustrate the structure of the ancient Korean wooden buildings by a comparative study of the historical resources such as stone remains, wall paintings historiographies and excavations. As stone pagodas are the most typical stone remains, I selected for analysis some stone pagodas which contain architectural elements and results of the study are as follows: 1) The number of stories and structural modes of the base stone part show the wooden architectural aspects: they have one or two stories and their base part is constructed in the mode of assembling rectangular stones. 2) The body of the pagoda contains such architectural elements as pillars, door and windows, crossbeams, balcony, bracket sets. 3) The roof of the stone pagoda contains such architectural elements as eaves, roofs and modes of stone assembling. The results inferred through this research could be of help for further comparative studies with the other secondary materials by providing basic knowledge for it.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.9 no.3
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• pp.676-683
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• 2005

In this paper, we proposed a method that optimal values of fuzzy control rule base and quantization of membership function are searched by genetic algorithm. Proposed method searched the optimal values of membership function and control rules using genetic algorithm by off-line. Then fuzzy controller operates using these values by on-line. Proposed fuzzy control system is optimized the control rule base and membership function by genetic algorithm without expert's knowledge. We investigated proposed method through simulation and experiment using DC motor and one link manipulator, and confirmed the following usefulness.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.21 no.46
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• pp.181-196
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• 1998

The aim of this research is the development of a CAPP system which can use the old experience of process planning to generate a process plan for a new part and learn from its own experience using the concept of stratified case-based reasoning(CBR). A process plan is determined through the hierarchical process planning procedure that is based on the hierarchical feature structure of a part. Each part and case have their own multiple abstractions that are determined by the feature structure of the part. Retrieving the case in stratified case-based process planning is accomplished by retrieving the abstraction that is most similar to the input part abstraction in each abstraction level of the case-base. A new process plan is made by the adaptation that translates the old case's process plan into the process plan of a new part. Operations, machines and tools, setups and operation sequence in each setup are determined in the adaptation of abstraction using some algorithms and the reasoning based on knowledge-base. By saving a new part and its process plan as a case, the system can use this new case in the future to generate a process plan of a similar part. That is, the system can learn its own experience of process planning. A new case is stored by adding the new abstractions that are required to save as the new abstraction to the existing abstractions in the case-base.

• Journal of the Korean Institute of Educational Facilities
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• v.16 no.1
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• pp.59-68
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• 2009

In the knowledge-base 21st century, schools are required functions as a place of education for student as well as a place of life-long education for community. Therefore schools are needed to be open and to be multiple. The purpose of this study is to analysis of open-facilities to community of twenty elementary schools in Busan and to suggest a design guideline for open -facilities of school plan at the base of this analysis. The main contents of this study are as follows: 1) Study for general ideals and necessity of opening school facilities to community. 2) Establish the study objects of the opening facilities by existing studies and a questionnaire. 3) Focused on twenty elementary schools in Busan, analysis of the characteristics of opening facilities in terms of the using efficiency, that is, the approachability, the recognition and the territoriality. 4) At the base of 1) 2) 3), results are as follows: $\circ$ In consideration of approachability, the block plan of the open-facilities should be designed at making a circulation system without interruption of the student's educational area. $\circ$ In consideration of recognition, the form and detail of external and internal of the open-facilities should be designed at making distinction with the student's educational area. $\circ$ In consideration of territoriality, the zone of the open-facilities should be designed at composing exclusive hall, staircase and sanitation.