A drive simulation tool is re-engineered to allow non-specialist users to model and analyse complex drive systems. This is achieved by re-designing the simulation environment to embody the problem domain. Towards this...
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ISBN:
(纸本)0780352939
A drive simulation tool is re-engineered to allow non-specialist users to model and analyse complex drive systems. This is achieved by re-designing the simulation environment to embody the problem domain. Towards this end a visual interactive modelling and simulation environment called Visual CASED has been developed.
The architecture, engineering and construction (AEC) industry is epitomized by a wide range of project business lines, different project scopes, unique client requirements, and a rapidly changing automation technology...
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This document describes an implementation of recoverable objects that can be accessed concurrently. After a brief description of the possible uses of recoverable objects and after reviewing some of the new features of...
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ISBN:
(纸本)3540660933
This document describes an implementation of recoverable objects that can be accessed concurrently. After a brief description of the possible uses of recoverable objects and after reviewing some of the new features of Ada 95 used in the implementation, the design issues are discussed and the interface of the recoverable object class is presented. An example application using multitasking demonstrates its applicability.
This paper presents the system called "MADE". MADE is an object-oriented software environment for research and application development for multimedia data processing. It is an integrated environment that sup...
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ISBN:
(纸本)0819431141
This paper presents the system called "MADE". MADE is an object-oriented software environment for research and application development for multimedia data processing. It is an integrated environment that supports algorithm development, management, and testing. It provides tools for image, sound, and graphic data processing even though the main emphasis is on image processing. The proposed system adopts a true object-oriented approach supporting well-separated data classes similar to IUE classes and provides multiple user interfaces for various classes of users. By separating the interface layer from data processing functions, it allows algorithm developers to write their functions without worrying about user interface programming. It is specially designed to work with both graphic and image objects in the same domain. It can display and edit image features in the graphic domain and process them in the image domain.
The simulation-based decision support system (SBDSS) is designed to achieve a highlevel of performance, flexibility and adaptability, in response to meet the special needs of productionand logistics management during ...
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The simulation-based decision support system (SBDSS) is designed to achieve a highlevel of performance, flexibility and adaptability, in response to meet the special needs of productionand logistics management during the economic system reform era in China. It consists two subsys-tems: the object library modeler (OLM) and the simulation engine and its manager (SEM). UsingSBDSS the decision makers can work out their optimal production choice under certain circumstancesthrough scenario simulations. And they can test a set of virtual organizations reflecting systems re-form before a real reorganization has been taken, as well as perform a virtual manufacturing processfor a new product design (Copyright @ 1998 IFAC).
This article describes an object-oriented implementation of the finite element method and the finite volume method in a unified adaptive system using the programming language C++. The system applies to various types o...
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This article describes an object-oriented implementation of the finite element method and the finite volume method in a unified adaptive system using the programming language C++. The system applies to various types of mathematical model problems. Traditionally, different numerical methods for different types of problems are implemented independently by procedural languages such as C and Fortran. Moreover, adaptive analysis programs are more complicated than nonadaptive programs. Nevertheless, these methods share many common properties such as linear system solvers, data structures, a posteriori error analyses, and refinement processes. Some advantageous features of object-oriented programming are demonstrated through the integration of these properties in the adaptive system. New data types of objects specific to adaptive methods are also introduced. The system is well-structured, extendable, and maintainable due mainly to the nature of encapsulation and inheritance of object-oriented programming.
This work is a numerical study of the 2-D heat equation with Dirichlet boundary conditions over a polygonal domain. The motivation for this study is a chemical vapor deposition (CVD) reactor in which a substrate is he...
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This work is a numerical study of the 2-D heat equation with Dirichlet boundary conditions over a polygonal domain. The motivation for this study is a chemical vapor deposition (CVD) reactor in which a substrate is heated while being exposed to a gas containing precursor molecules. The interaction between the gas and the substrate results in the deposition of a compound thin film on the substrate.
Two different numerical approximations are implemented to produce numerical solutions describing the conduction of thermal energy in the reactor. The first method used is a Crank-Nicholson finite difference technique which tranforms the 2-D heat equation into an algebraic system of equations. For the second method, a semi-discrete method is used which transforms the partial differential equation into a system of ordinary differential equations.
The goal of this work is to investigate the influence of boundary conditions, domain geometry, and initial condition on thermal conduction throughout the reactor. Once insight is gained with respect to the aforementioned conditions, optimal design and control can be investigated. This work represents a first step in our long term goal of developing optimal design and control of such CVD systems. This work has been funded through Partnerships in Research Excellence and Transition (PRET) grant number F49620-96-1-0329.
The relationship between the generalised computational model of Term Graph Rewriting Systems (TGRS) and object-oriented programming (OOP) is explored and exploited by extending the TGRS model with records where access...
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The relationship between the generalised computational model of Term Graph Rewriting Systems (TGRS) and object-oriented programming (OOP) is explored and exploited by extending the TGRS model with records where access to parameters is done by naming rather than position. Records are then used as the basis for expressing object-oriented techniques such as object encapsulation and (various forms of) inheritance. The effect is that TGRS with records can now be used as an implementation model for a variety of (concurrent) object-oriented (functional, logic or otherwise) languages but also as a common formalism for comparing various related techniques (such as different forms of inheritance or approaches for providing solutions to problems caused by the combination of concurrency and interaction between objects).
Monte Carlo simulation is a very powerful tool in understanding performances of positron tomographs as well as in assessing image reconstruction algorithms and their implementations. We present an object-oriented Mont...
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Monte Carlo simulation is a very powerful tool in understanding performances of positron tomographs as well as in assessing image reconstruction algorithms and their implementations. We present an object-oriented Monte Carlo simulator developed for 3D positron tomography. Results from phantom simulation studies including absorption and scattering of the photons in the field-of-view are presented. Scatter fractions determined from these studies are in good agreement with measured scatter fractions published in the literature. Limitations and future prospects are discussed. (C) 1999 Elsevier Science Ireland Ltd. All rights reserved.
Operator interface for a controlled water tank process has been developed in Java. The task of the system is to control the water level in a tank, to give the user an opportunity to interact with the controller, and t...
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Operator interface for a controlled water tank process has been developed in Java. The task of the system is to control the water level in a tank, to give the user an opportunity to interact with the controller, and to present data in a lucid way. The P-, I- and D-part of the control signal are shown in a graph and thereby give a clear insight in the function of the controller. Taking use of the Java standard libraries has made the program small but at the same time powerful.
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