scholarly journals Overview of Object-Oriented Paradigm in an Appendix to the Development of Databases

2019 ◽  
Vol 17 (3) ◽  
pp. 123-134
Author(s):  
E. A. Yatsenko
Keyword(s):  
Data Model ◽  
Computer Aided Design ◽  
Relational Databases ◽  
Object Oriented ◽  
Database Design ◽  
Practical Implementation ◽  
Software Products ◽  
Knowledge Based ◽  
Computer Aided ◽  
Production Knowledge

The article provides an overview of projects, technologies, software products developed to implement the ideas of an object-oriented approach to database design. In the 80s of the 20th century, there were many projects devoted to the idea of OODB, many experts expected that in the near future relational databases would be crowded out with objectoriented ones. Despite the impressive number of projects conducted by both teams of scientists and commercial companies focused on practical implementation, there was no clear formulation of an object-oriented data model, each team presented its own vision of applying object-oriented concepts to database design. The absence of a universal data model, with a well-developed mathematical apparatus (as in the case of relational databases), is still the main problem in the distribution of an OODBMS. However, the use of relational DBMS raises a lot of problems that are most acutely felt in areas such as computer-aided design, computer-aided production, knowledge-based systems, and others. OODB allow to combine the program code and data, to avoid differences between the representations of information in the database and the application program, as a result of which modern developers show interest in them. There are a lot of OODBMS, but they cannot compete with the largest storage organization systems.

HyperGear: An Object Oriented Design Program for Single Stage Gear Box Design

1991 ◽  
Author(s):  
Gary A. Gabriele ◽  
Agustî Maria I. Serrano
Keyword(s):  
Computer Aided Design ◽  
Object Oriented ◽  
Design Tool ◽  
Single Stage ◽  
Design Tools ◽  
Object Oriented Design ◽  
Computer Aided ◽  
Gear Box ◽  
Aided Design ◽  
Object Oriented Languages

Abstract The need for superior design tools has lead to the development of better and more complex computer aided design programs. Two of the more important new developments in application tools being investigation are Object Oriented Languages, and HyperMedia. Object Oriented Languages allow the development of CAD tools where the parts being designed and the design procedures specified are conceptualized as objects. This allows for the development of design aids that are non-procedural and more readily manipulated by the user trying to accomplish a design task. HyperMedia allows for the easy inclusion of many different types of data, such as design charts and graphs, into the tool that are normally difficult to include in design tools programmed with more conventional programming languages. This paper explores the development of a computer aided design tool for the design of a single stage gear box using the development HyperCard® environment and the HyperTalk® programming language. The resulting program provides a user friendly interface, the ability to handle several kinds of design information including graphic and textual, and a non-procedural design tool to help the user design simple, one stage gear boxes. Help facilities in the program make it suitable for undergraduate instruction in a machine elements design course.

Computer Aided Design and Analysis of Composite Structure

2014 ◽  
Vol 1036 ◽  
pp. 989-994 ◽  
Author(s):  
Michał Majzner ◽  
Andrzej Baier
Keyword(s):  
Layered Structure ◽  
Computer Aided Design ◽  
Object Oriented ◽  
Verification And Validation ◽  
Structural Components ◽  
Modeling And Analysis ◽  
Computer Aided ◽  
The Individual ◽  
Aided Design ◽  
The Relationship

Feature is one of the methods for representing objects from which are representing components, products and processes. This article presents methods for integration of features of methods in modeling and analysis of composite structural components. The aim of the research is to develop methods for verification and validation of composite layered structure, distinguishing components of the individual layers and identify the relationship between them. By applying the method of features it is possible to determine the structure of the composite fit to the requirements of design and construction. Proposed new types of feature, which allows the creation of object-oriented structures of composite components.

Computer-Aided Form Generation for Product Design

2010 ◽  
Vol 97-101 ◽  
pp. 3785-3788
Author(s):  
Hung Cheng Tsai ◽  
Tien Li Chen ◽  
Hung Jung Tsai ◽  
Fei Kung Hung
Keyword(s):  
Computer Aided Design ◽  
Product Form ◽  
Knowledge Based ◽  
Blending Method ◽  
Computer Aided ◽  
Design Activities ◽  
Form Design ◽  
Product Form Design ◽  
Aided Design ◽  
Product Forms

The product form design activities involve a high degree of uncertainty and complexity and are therefore not easily formulated, coded and regularized. Consequently, very few of the computer-aided design approaches presented in the literature can support the conceptual form design tasks typically performed at the preliminary stages of a product’s development cycle. To enable designers to perform their design activities more objectively and efficiently, this paper combines the principles of fuzzy set theory, the shape-blending method and genetic algorithms to generate a knowledge-based approach for product form design based upon a database describing the relationships between different product forms and their corresponding perceptual image evaluations.

Knowledge-Based Computer-Aided Design System for Ingot Casting Processes

1990 ◽  
Author(s):  
R. Viswanath ◽  
Yogesh Jaluria
Keyword(s):  
Heat Transfer ◽  
Decision Making ◽  
Computer Aided Design ◽  
Heat Transfer Analysis ◽  
Manufacturing Processes ◽  
Ingot Casting ◽  
Design Rules ◽  
Knowledge Based ◽  
Computer Aided ◽  
Aided Design

Abstract Thermal manufacturing processes are typically those in which a material is subjected to a temporal thermal cycle like casting, extrusion and heat treatment of metals and plastics. The complexity of the design process for all these systems stems from the need to simulate complicated heat transfer, fluid flow and phase change phenomena and couple the results with the design rules and knowledge available on the manufacturing processes to obtain satisfactory designs. In this regard, the ability of expert systems to use heuristic reasoning has proved to be a powerful tool in the computer-aided-design of thermal manufacturing systems. In this paper, the salient features of a knowledge-based system developed for the design of ingot casting process has been outlined. A Prolog based decision making front-end is interfaced with a Fortran based computational engine for rapid design. The results from the heat transfer analysis obtained from the computational module, are coupled to the evaluation module, which checks for satisfaction of the design criteria and violation of the design constraints. The decision making module uses a set of design rules to manipulate the variables until the design specifications are satisfied. Modularity and flexibility are maintained using an object-oriented format. Several interesting design acceleration features like learning from simple mathematical models and design extraction from previous designs are illustrated. The main features of this knowledge-based tool and the savings in time resulting from using these special features are discussed in detail.

A knowledge-based system for computer-aided architectural design for energy savings and thermal comfort

1990 ◽  
Vol 4 (2) ◽  
pp. 71-88 ◽  
Author(s):  
L. F. Pau ◽  
S. Skafte Nielsen
Keyword(s):  
Computer Aided Design ◽  
Architectural Design ◽  
Energy Savings ◽  
Predicate Logic ◽  
Design Guidelines ◽  
Design System ◽  
Knowledge Based System ◽  
Knowledge Based ◽  
Computer Aided ◽  
Aided Design

This paper describes EKSPRO, a knowledge-based system integrating a 3-D computer-aided design system for materials, heating, ventilation, lighting equipment, building codes and occupational health regulations, and design guidelines user-defined by architects and engineers. The system features an object-oriented predicate logic knowledge representation, and interfaces with calculation packages (CAD, thermal balance, illumination, daylight).

Interval mathematics for knowledge-based computer aided design in magnetics

1990 ◽  
Vol 26 (2) ◽  
pp. 803-806 ◽  
Author(s):  
C.S. Brett ◽  
C.M. Saldanha ◽  
D.A. Lowther
Keyword(s):  
Computer Aided Design ◽  
Interval Mathematics ◽  
Knowledge Based ◽  
Computer Aided ◽  
Aided Design
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