• Title/Summary/Keyword: object-oriented paradigm

Search Result 142, Processing Time 0.035 seconds

Development of Flexible Manufacturing System using Virtual Manufacturing Paradigm

  • Kim, Sung-Chung;Park, Kyung-Hyun
    • International Journal of Precision Engineering and Manufacturing
    • /
    • v.1 no.1
    • /
    • pp.84-90
    • /
    • 2000
  • The importance of Virtual Manufacturing System is increasing in the area of developing new manufacturing processes, implementing automated workcells, designing plant facility layouts and workplace ergonomics. Virtual manufacturing system is a computer system that can generate the same information about manufacturing system structure, states, and behaviors as is observed in a real manufacturing. In this research, a virtual manufacturing system for flexible manufacturing cells (VFMC), (which is a useful tool for building Computer Integrated Manufacturing (CIM), has been developed using object-oriented paradigm, and implemented with software QUEST/IGRIP. Three object models used in the system are the product model, the facility model, and the process model. The concrete behaviors of a flexible manufacturing cell are re[presented by the task-oriented description diagram, TIC. An example simulation is executed to evaluate applicability of the developed models, and to prove the potential value of virtual manufacturing paradigm.

  • PDF

Java Object Modeling Using EER Model and the Implementation of Object Parser (EER 모델을 이용한 Java Object 모델링과 Object 파서의 구현)

  • 김경식;김창화
    • The Journal of Information Technology and Database
    • /
    • v.6 no.1
    • /
    • pp.1-13
    • /
    • 1999
  • The modeling components in the object-oriented paradigm are based on the object, not the structured function or procedure. That is, in the past, when one wanted to solve problems, he would describe the solution procedure. However, the object-oriented paradigm includes the concepts that solve problems through interaction between objects. The object-oriented model is constructed by describing the relationship between object to represent the real world. As in object-oriented model the relationships between objects increase, the control of objects caused by their insertions, deletions, and modifications comes to be very complex and difficult. Because the loss of the referential integrity happens and the object reusability is reduced. For these reasons, the necessity of the control of objects and the visualization of the relationships between them is required. In order that we design a database necessary to implement Object Browser that has functionalities to visualize Java objects and to perform the query processing in Java object modeling, in this paper we show the processes for EER modeling on Java object and its transformation into relational database schema. In addition we implement Java Object Parser that parses Java object and inserts the parsed results into the implemented database.

  • PDF

A Comparative Study on Methods for Implementing VHDL Design Database (VHDL 설계 데이터베이스 구현 방법의 비교 연구)

  • 최승욱;최기영
    • Journal of the Korean Institute of Telematics and Electronics B
    • /
    • v.32B no.7
    • /
    • pp.966-973
    • /
    • 1995
  • In this paper, we compare several methods for implementing a VHDL design database through a case study on VHDL tool development system. We implemented three versions of the VHDL design database which the VHDL tool development system is based on. The first version was coded in the C programming language following value-oriented paradigm. The second one was coded in the C++ programming language following object-oriented paradigm. The third one was implemented using an existing object-oriented database. Based on our experience, we present quantitatively the pros and cons of each implementation method. The value-oriented version was most difficult to implement but showed good performance. Compared to the value- oriented version, the C++ version was twice as easy to implement and showed about the same performance. Using an existing object-oriented database allowed easiest implementation but resulted in a 1.5 to 6 times slower version.

  • PDF

Design Patterns for Realizing Object-Oriented Inheritance in EJB Environment (EJB 환경에서 객체지향 상속 관계 설계 패턴)

  • Choi, Si-Won;Kim, Soo-Dong
    • The KIPS Transactions:PartD
    • /
    • v.11D no.1
    • /
    • pp.153-162
    • /
    • 2004
  • Software development methodology using object-oriented analysis and design techniques for improving productivity and maintainability has acquired a substantial acceptance in both academia and industry as a fundamental paradigm. Enterprise Java Beans (EJB) is widely used in both academia and industry because it provides high unability and rapid application development. EJB supports object-oriented paradigm, but there are several things to consider when designing detail model of object-oriented model or implementing object-oriented model with EJB model. One of them is inheritance problem. In this paper, we classify the types of class inheritance which is shown upon in object-oriented model into three types and identify the problems which can happen when implementing the inheritance mechanism with EJB model. And this paper proposes three patterns for realizing the inheritance in EJB. Moreover, applicable patterns and guidelines for each object-oriented inheritance types for the proposed patterns are suggested.

Construction of simulator for cooperative multi-robot motions (다중로보트의 동작결정을 위한 시뮬레이터 구성)

  • 김정찬;김진걸
    • 제어로봇시스템학회:학술대회논문집
    • /
    • 1992.10a
    • /
    • pp.332-336
    • /
    • 1992
  • We describe about the graphic simulation system which supports the determination of efficient multi-robot motions during cooperation. For the construction of the simulation software for multi-robot motions, two problems are presented. First problem is that all the robot motions must be determinded using both the desired object motions and the holonomic constraints with the object. To find the robot motions combined with the various object motion path, the robot motions are derived from the desired object path instead of a master robot path. Therefore robot motions can be easily modifiable with the various object motions. This type of motion determination is different from that of the master-slaves method using the master robot motions. The other is that the developments of robot application softwares need a heavy cost when the participated robots or the tasks given to the robots are changed. Based on object-oriented programming paradigm, we present useful software objects describing robot application programming environment. The object-oriented programming paradigm increases the software reusability, reliability, and extensibility, and also provides the structual concepts to cope with the various demands of robot application programming.

  • PDF

Coupling Metrics Including Indirect Dependency for Object-Oriented Systems (객체지향 시스템에서 간접 의존성을 포함한 결합도 메트릭)

  • Yoo, Moon Sung
    • Journal of Korea Society of Digital Industry and Information Management
    • /
    • v.7 no.3
    • /
    • pp.37-42
    • /
    • 2011
  • Nowadays software developers are moving from conventional software process technologies to the object-oriented paradigm. To develope the object-oriented softwares efficiently, various software metrics have been suggested. Coupling refers to the degree of independence between components of the system. It has long been well known that good software practice calls for minimizing coupling interaction. Many researches have been studied coupling metrics of the object- oriented systems. We review Chidamber and Kemerer's work & Li's work. In this paper, we study the coupling of the overall structures of object-oriented systems by analyzing the class diagram of UML. We propose four coupling metrics for object-oriented softwares. First, we use an established coupling metric for object- oriented systems as a basic coupling metric. Then we modify the basic coupling metric by including indirect coupling between classes, 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 a practical case study. This coupling metric will be helpful to the software developers for their designing tasks by evaluating the coupling metric of the structures of object-oriented system and redesigning tasks of the system.

MVPE:multiparadign visual programming environment (MVPE:멀티패러다임 시각 프로그래밍 환경)

  • 유재우;최종명
    • The Journal of Korean Institute of Communications and Information Sciences
    • /
    • v.23 no.9A
    • /
    • pp.2313-2324
    • /
    • 1998
  • Although visual programming is used in many fields of computer science and engineering, some dis-advantages can be found when they work together in an integrated programming environment. To overcome these shortcomings, there have been researches in combining multiparadigm with visual programming. However they have failed because they tried to combine the paramdigms without any coceptural model and structured method. In this paper, we investigate a new multiparadigm visual programming environment (MVPE), in which dataflow paradigm, form-based paradign, direct manipulation paradigm, and object-oriented paradigm are integrated together in an object-oriented way, based on the conceptual model of "method = paradigm, " This MVPE would overcome the limits of visual programming, and may also lead to the new discipline of visual programming environment.vironment.

  • PDF

Object-Oriented Models for Integrated Processing System of Finite Element Structural Analysis Program (유한요소 구조해석 프로그램의 전후처리 통합 운영 시스템을 위한 객체지향적 모델)

  • 서진국;송준엽;신영식;권영봉
    • Proceedings of the Computational Structural Engineering Institute Conference
    • /
    • 1994.10a
    • /
    • pp.17-24
    • /
    • 1994
  • The pre- and post-processor for finite element structural analysis considering the user-friendly device are developed by using GUI. These can be used on WINDOWS' environment which is realized the multi-tasking and the concurrency by object-oriented paradigm. They are designed to control integratedly the pre-processing, execution and the post-processing of the finite element structural analysis program on multiple windows. These object-oriented modeling approach can be used for complex integrated engineering systems.

  • PDF

Development of an Object-Oriented Finite Element Analysis Program Using J$Java^TM$ ($Java^TM$ 언어를 이용한 객체 지향 유한 요소 해석 프로그램의 개발)

  • 이정재;이호재
    • Magazine of the Korean Society of Agricultural Engineers
    • /
    • v.40 no.2
    • /
    • pp.130-139
    • /
    • 1998
  • The finite element analysis program should be prepared to deal with many of newly arising engineering problems. The sequential structured programming technique does not make a finite element method so flexible. So far, the object oriented programming technique was studied as an alternative programming paradigm. However, most of the research were in the state of the evaluation of the possibility and the applicability of the object oriented method for a finite element program. In this study, a practical object oriented finite element analysis program, OOFE_ JAVA was developed and the result of the analysis on a rectangular clamped plate was shown. The objects which compose the OOFE_JAVA were applied to several engineering problem without any modification and it was concluded that the object oriented technique was appropriate for the development of a complex and large engineering system. And a virtual machine which Java language is using can be loaded on any kinds of computer which has java interpreter regardless of the platform on which the OOFE_JAVA was developed.

  • PDF

An Empirical Study on the Cognitive Difference between the Creators and Users of Object-Oriented Methodology

  • Kim, Jin-Woo;Hahn, Jung-Pil
    • Management Science and Financial Engineering
    • /
    • v.2 no.1
    • /
    • pp.147-176
    • /
    • 1996
  • The main objective of this study is to uncover the differences in the programming behavior between methodology creators and methodology users. We conducted an experiment with methodology creators who have invented one of the major object-oriented methodologies and with professional programmers who have used the same methodology for their software-development projects. In order to explain the difference between the two groups, we propose a theoretical framework that views programming as search in four problem spaces: representation, rule, instance and paradigm spaces. The main problem spaces in programming are the representation and rule spaces, while the paradigm and instance spaces are the supporting spaces. The results of the experiment showed that the methodology creators mostly adopted the paradigm space as their supporting space, while the methodology users chose the instance space as their supporting space. This difference in terms of the supporting space leads to different search behaviors in the main problem spaces, which in turn resulted in different final programs and performance.

  • PDF