• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2005년도 하계학술대회 논문집 Vol.6
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• pp.135-138
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• 2005

HDL(Hardware Description Language) is the most important modem tools used to describe hardware, and becomes important as we move to higher levels of abstraction. The HDL has been made brisk use of in analog design, MEMS device[1-2], process related field as well as digital design. The most important characteristics of HDL is Abstraction which is the strongest tool that extend greatly designer's design ability. In this paper by the Modelling Continuum with hierarchical structure of abstraction, we apply UML(Unified Modeling Language) to SoC Design with HDL UML makes an easy and visual description of the various levels of abstraction, and gives designers good flexible modeling capabilty for SoC Design.

• International Journal of Computer Science & Network Security
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• 제24권6호
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• pp.180-186
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• 2024

A common language for modelling software requirements and design in recent years is Unified Modeling Language (UML). Essential principles and rules are provided by UML to help visualize and comprehend complex software systems. It has therefore been incorporated into the curriculum for software engineering courses at several institutions all around the world. However, it is commonly recognized that UML is challenging for beginners to understand, mostly owing to its complexity and ill-defined nature. It is unavoidable that we need to comprehend their preferences and issues considerably better than we do presently in order to approach the problem of teaching UML to beginner students in an acceptable manner. This paper offers a hint based approach that can be implemented along with an ordinary lab task. Some keywords are heighted to indicate class diagram component and make students to understand the textual descriptions. The experimental results indicate significant improvement in students learning skills. Furthermore, majority of students also positively responded to the survey conducted in the end experimental study.

• 정보처리학회논문지B
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• 제14B권1호
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• pp.23-32
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• 2007

최근 다양한 분야에서 폭넓게 활용되고 있는 XML 문서는 유연하고도 개방적인 특성으로 인해 정보교환이나 전송을 위한 수단으로 널리 이용되고 있다. 한편 XML 문서를 위한 시각적, 직관적 질의 언어인 XML-GL은 질의에 대한 의미와 결과 문서의 구조를 시각적으로 표현할 수 있기 때문에 XML 문서에 대한 구조 검색과 정보의 공유가 용이하다. 그리고 UML은 정해진 표기법과 다양한 다이어그램을 이용하여 객체지향 분석과 설계를 위한 도구로 사용되고 있다. 본 논문은 UML 클래스 다이어그램을 이용한 XML-GL 질의 모델링 방안을 제안한다. 또한, 모델 구성요소에 대한 제약사항을 정확하게 묘사하기 위하여 객체제약언어(Object Constraint Language)로 정의하였다. 이를 통해 XML 문서를 객체지향 데이터로 변환하여 저장/관리할 수 있으며, UML 클래스 다이어그램을 이용한 질의 모델링 방법을 적용하여 보다 효율적으로 XML 문서를 검색할 수 있다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2009년도 제40회 하계학술대회
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• pp.1814_1816
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• 2009

ZigBee is a technology that is being rapidly developed since its power consumption is low and the stability of its communication is high. However, documented data which is coded using conventional programming languages such as C or assembly programming language would not be able to fulfill the various requirements upon application development by ZigBee. Unified Modelling Languge (UML) could be one of the alternatives to solve this problem. UML provides a variety of diagrams by which the results of the software development can be presented visually and by which the developers can communicate more spontaneously. This paper shows the results of an ongoing study into the application of model-driven methods for ZigBee Application. Also, this paper shows that this approach is feasible by comparing memory usage, latency, and power consumption of UML modelling code with those of handwritten code.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 학술대회 논문집 전문대학교육위원
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• pp.38-41
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• 2003

An Autonomous Mobile Robot(AMR) performs duty by sensing a recognized situation and controlling suitably. The existing algorithm has some advantages that it is possible to express the obstacle exactly and the robot is sensitive to the change of environment. However, this algorithm needs to control repeatedly according to the modelling and working environment that requires a great quantity of calculations. In this paper, We supplement shortcoming and designed direction algorithm of AMR using fuzzy controller. Fuzzy controller does not derive special quality spinning expression for system, and uses rules by value expressed by language. It is used extensively to non-linear, plant which mathematical modelling is difficult etc... Fuzzy control algorithm of AMR that is used by this research applies obstacle position, distance of obstacle, Progress direction of robot, speed of robot, Perception area of sensor, etc... by fuzzy control and decide steering angle of robot.

• 대한안전경영과학회지
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• 제5권2호
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• pp.75-85
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• 2003

Manufacturing firms have adapted seriously the Design for Manufacture and Assembly (DFMA) techniques which consider concurrently all factors related to the product development by using effective communications and sharing of information on product development processes. This study performed modelling and characterizing the data related to product manufacturing information for Design for Manufacture(DFM) evaluation and analysis. It adapted component-based development method for communicating and managing manufacturing information among distributed manufacturing organizations. Introducing component-based development offers safety and speed to network based system. This development using Unified Modelling Language(UML) provides efficient way for reconstruction and distribution of applications. Also, the integration of database and component into the internet environment enables to communicate and manage effectively manufacturing information for DFM evaluation and analysis at any place in the world. Therefore this system can make it more reasonable that evaluating, analyzing, and effective decision making of product design using DFM technique.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 1998년도 가을 학술발표논문집 Vol.25 No.2 (1)
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• pp.371-373
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• 1998

이 기종간의 효율적인 문서 교환을 목적으로 생겨난 SGML(Standard Generalized Markup Language)은 현재 여러 많은 연구기관 및 재단에서 문서의 표준으로 잡아가고 있다. 최근에 와서는 SGML, DTD를 모델링 하기 위한 여러 방법이 제시되고 있다. 본 논문은 이런 SGML, DTD를 객체지향 Class Diagram에 기반 한 형태로 변환하는 알고리즘을 제시한다. 이를 통해 우리는 점점 그 규모가 방대해 지고 있는 SGML 문서를 객체지향 DB로 저장할 수 있게 될 것이다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1998년도 하계학술대회 논문집 A
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• pp.214-216
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• 1998

Parameterizing a model is one of the most efficient ways of conducting "virtual prototying" i.e. exploring the "What if?" scenario. But it is very difficult to construct parameterized models in commercial based FEM programs, because they usually adopt the mouse inputs in their GUI, which cannot be parameterized. We consolidated a parametric modelling technique in OPERA-3d preprocessor, which is one of world leading electromagnetic analysis programs, by combining the mouse inputs in GUI with it's FORTRAN-based self script command language.

• 산업경영시스템학회지
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• 제20권44호
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• pp.153-161
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• 1997

This paper has proposed the modelling by simulation in order to evaluate the performance of process through discrete event simulation using SIMAN language in flexible manufacturing systems. The production system is assumed to be a job shop type of system under the batch production of discrete products. In this paper, the input data is the workstation(process) time, the number of workstation(process), a probability distribution, the number of simulation runs. Also, transient period is considered. In the case study, this paper deals with three products in real flexible manufacturing systems. Finally, a number of simulation runs were executed under different experimental conditions to obtain preliminary statistics on the following performance measures: operating rate of facility and average system operating rate, transient period, central processing unit, average system throughput, and average waiting time in queues.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 2001년도 추계학술대회 논문집
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• pp.61-64
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• 2001

We propose a message-based communication protocol for software agents. An emphasis is placed on the problems of sharing and exchanging information through agent communication. We adopt the Resource Description Framework (RDF) schema for information modelling in business domain. The eXtensible Markup Language (XML) serialization is used to generate messages for agent communication. The use of XML and RDF enables software agents to understand the contents of messages correctly and consistently. We believe that the approach can provide a promising way to the automation of business processes through seamless communication among the partners.