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Initial Research for the Development or Purchase of a Computerized Synthesizer For Use as a Composer's Aid

Description: The author's primary goal is to begin research leading ot the attainment of a low cost computer/music system which will allow the composer to write polyphonic music of up to eight voices into a computer through a terminal, and have the music played back by means of computer synthesized sound or by means of a conventional synthesizer controlled by a computer via digital-to-analog converters. The goal system will allow the composer to retreat and hear his product objectively as the painter steps … more
Date: August 1978
Creator: Vaughan, Scott
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

A Comparison of File Organization Techniques

Description: This thesis compares the file organization techniques that are implemented on two different types of computer systems, the large-scale and the small-scale. File organizations from representative computers in each class are examined in detail: the IBM System/370 (OS/370) and the Harris 1600 Distributed Processing System with the Extended Communications Operating System (ECOS). In order to establish the basic framework for comparison, an introduction to file organizations is presented. Additional… more
Date: August 1977
Creator: Rogers, Roy Lee
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

A Computer Solved Scheduling Problem

Description: The purpose of this paper is to illustrate the use of the computer in solving complex real time scheduling problems. This problem involves the airline industry and is concerned with the local scheduling of security personnel to the gate areas for outgoing flights from one terminal at Dallas-Fort Worth airport. The purpose of this type of program is to enhance personnel efficiency and management control over a large group of people while cutting the cost of lower management.
Date: April 1978
Creator: Messinger, Stanley Eugene
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Notes on the SWTPC MP-N Calculator Interface and the Calc-1 Program

Description: This interface was bought to perform floating-point arithmetic and for its function capabilities such as SIN, COS, and e^x. My application required an integer truncation function that is not performed by this calculator, so i wrote a small assembly language subroutine to do it. A potentially irritating problem is that the calculator chip does not automatically convert to scientific notation if the numbers become too big to display in floating point. The control program must keep track of the di… more
Date: May 1979
Creator: Long, Daniel Paul
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

VISOR (Variable Interval Schedule Of Reinforcement) System Documentation

Description: This program will be used in operant behavior research to monitor and record responses and trigger and record reinforcements on a variable reinforcement (VI) schedule. The original application of this program will be the servicing of several rat cages simultaneously. The response will be the pressing of a metal bar in the cage, the reinforcement will be the triggering of a feeding mechanism which disperses a food pellet into the cage. The subsequent applications of this program are not limited,… more
Date: December 1979
Creator: Long, Daniel Paul
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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A Method for Applying Scientific Subroutine Package in Microprocessor

Description: The scientific subroutine package is one of the most important parts of the software for the scientific industry. By now, most big computers have scientific packages, but applying such a software package in microprocessors requires consideration of the microprocessor's facilities, such as limited main memory, slow execution time, and only a few small registers. In any scientific package, the trigonometric functions are the ones more widely used. This paper discusses a method for implementing se… more
Date: April 1978
Creator: Latifi, Akbar
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

A Programming Language For Concurrent Processing

Description: This thesis is a proposed solution to the problem of including an effective interrupt mechanism in the set of concurrent- processing primitives of a block-structured programming language or system. The proposed solution is presented in the form of a programming language definition and model. The language is called TRIPLE.
Date: August 1972
Creator: Jackson, Portia M.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

A Comparative Analysis of Guided vs. Query-Based Intelligent Tutoring Systems (ITS) Using a Class-Entity-Relationship-Attribute (CERA) Knowledge Base

Description: One of the greatest problems facing researchers in the sub field of Artificial Intelligence known as Intelligent Tutoring Systems (ITS) is the selection of a knowledge base designs that will facilitate the modification of the knowledge base. The Class-Entity-Relationship-Attribute (CERA), proposed by R. P. Brazile, holds certain promise as a more generic knowledge base design framework upon which can be built robust and efficient ITS. This study has a twofold purpose. The first is to demonstrat… more
Date: August 1987
Creator: Hall, Douglas Lee
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Independent Quadtrees

Description: This dissertation deals with the problem of manipulating and storing an image using quadtrees. A quadtree is a tree in which each node has four ordered children or is a leaf. It can be used to represent an image via hierarchical decomposition. The image is broken into four regions. A region can be a solid color (homogeneous) or a mixture of colors (heterogeneous). If a region is heterogeneous it is broken into four subregions, and the process continues recursively until all subregions are homog… more
Date: December 1986
Creator: Atwood, Larry D. (Larry Dale)
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

A Graphical, Database-Querying Interface for Casual, Naive Computer Users

Description: This research is concerned with some aspects of the retrieval of information from database systems by casual, naive computer users. A "casual user" is defined as an individual who only wishes to execute queries perhaps once or twice a month, and a "naive user" is someone who has little or no expertise in operating a computer and, more specifically for the purposes of this study, is not practiced at querying a database. The research initially focuses on a specific group of casual, naive users, n… more
Date: August 1985
Creator: Burgess, Clifford G. (Clifford Grenville)
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

FORTRAN Optimizations at the Source Code Level

Description: This paper discusses FORTRAN optimizations that the user can perform manually at the source code level to improve object code performance. It makes use of descriptive examples within the text of the paper for explanatory purposes. The paper defines key areas in writing a FORTRAN program and recommends ways to improve efficiency in these areas.
Date: August 1977
Creator: Barber, Willie D.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Computerized Analysis of Radiograph Images of Embedded Objects as Applied to Bone Location and Mineral Content Measurement

Description: This investigation dealt with locating and measuring x-ray absorption of radiographic images. The methods developed provide a fast, accurate, minicomputer control, for analysis of embedded objects. A PDP/8 computer system was interfaced with a Joyce Loebl 3CS Microdensitometer and a Leeds & Northrup Recorder. Proposed algorithms for bone location and data smoothing work on a twelve-bit minicomputer. Designs of a software control program and operational procedure are presented. The filter made w… more
Date: August 1976
Creator: Buckner, Richard L.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Generating Machine Code for High-Level Programming Languages

Description: The purpose of this research was to investigate the generation of machine code from high-level programming language. The following steps were undertaken: 1) Choose a high-level programming language as the source language and a computer as the target computer. 2) Examine all stages during the compiling of a high-level programming language and all data sets involved in the compilation. 3) Discover the mechanism for generating machine code and the mechanism to generate more efficient machine code … more
Date: December 1976
Creator: Chao, Chia-Huei
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

An English and Arabic Character Printer

Description: This paper is presented in satisfaction of the requirement for two problems in lieu of thesis which are required for the degree, Master of Science. The two problems are: (1) to provide an electric interface between the M6800 microprocessor and the printer; and (2) to design an Arabic character set and to provide the logic required for its implementation. As it would be artificial and impractical to document these problems separately, a single document here is provided.
Date: December 1976
Creator: Abdel-Razzack, Malek G.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Machine Recognition of Hand-Send Morse Code Using the M6800 Microcomputer

Description: This research is the result of an effort to provide real-time machine recognition of hand-send Morse code through the use of the M6800 microcomputer. While the capability to recognize hand-send Morse code messages by machine has been demonstrated before on large scale special purpose computers, on minicomputers, and even on the M6800 microcomputer, the main contribution of this paper is to demonstrate it with relatively understandable hardware and software.
Date: May 1980
Creator: Firouzi, Hossein
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

A Report on Control of Access to Stored Information in a Computer Utility

Description: Time-sharing computer systems permit large numbers of users to operate on common sets of data and programs. Since certain parts of these computer resources may be sensitive or proprietary, there exists the risks that information belonging to one user, may, contrary to his intent, become available to other users, and there is the additional risk that outside agencies may infiltrate the system and obtain information. The question naturally arises of protecting one user's stored program and data a… more
Date: 1978
Creator: Shakiba-Jahromi, Mostafa
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Design and Implementation of a PDP-8 Computer Assembler Executing on the IBM 360/50 Computer

Description: This problem is intended to be an introduction to the design of a software system which translates PDP-8 assembly language source into it's machine-readable object code. This assembler runs on the IBM 360/50. It is assumed that the reader is familiar with the basic PDP-8 assembly language. For the description and use of this assembler the reader is referred to the PAL-III SYMBOLIC ASSEMBLER PROGRAMMING MANUAL from DEC (order number DIGITAL 8-3-5, Digital Equipment Corporation: Maynard, Massachu… more
Date: August 1977
Creator: Madani, Ali
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

ADA Tasking Facilities for Concurrent and Real-Time Programming

Description: This paper describes multitasking facilities of Ada in concurrent and real-time programming. Synchronization and process communication mechanisms are discussed in detail, also, a new mechanism to solve the scheduling problem is developed. In the concurrent programming aspect, a comparison is made between Ada's rendezvous and Pascal's Monitor concept. In the real-time programming aspect, the differences between the Ada multitasking and the traditional "cyclic executive approaches are contrasted … more
Date: April 1984
Creator: Chang, Ming-Chu
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

A Comparison of Meansort and Quicksort

Description: The main purpose of this project is to compare a new sorting method- Meansort with its preceding sorting method- Quicksort. Meansort uses the mean value for each key to determine the partition of the file, but Quicksort selects at random. Experiments proved that in some ways Meansort is superior to Quicksort but is still not perfect since it always needs a mean value for each key. This project implements these two methods and determines the situations under which each of these methods outperfor… more
Date: November 1985
Creator: Tsang, Pey Betty
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

The Data Structure of a KSAM Key Directory

Description: The purpose of this project is to explore the alternate data structures for a disk file which is currently a preorder binary tree. specifically, the file is the key directory for an implementation of Keyed Sequential Access Method (KSAM) in a mini-computer operating system. A new data structure will be chosen, with the reasons for that choice given, and it will be incorporated into the existing system.
Date: November 1980
Creator: Kirchoff, Deanna T.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Mini-ADA Compiler Project

Description: The Ada language is one of the most controversial topics in computer science today. Ada was originally designed as a solution to the software maintenance problems encountered by the United States Department of Defense[2], and as a multi-purpose language to be used particularly in an embedded computer system[7]. Never before has a project been undertaken. The Ada language does not simply entail the construction of a new compiler or a new language definition, it is this and a great deal more.
Date: October 1983
Creator: Chang, Kai
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Design and Implementation of a Text Editor Under Music Interactive Operating System

Description: An interactive text editor is a computer program that allows a user to create and revise a target document such as program statements, manuscript text, and numeric data through an online terminal and the computer. It allows text to be modified and corrected many orders of magnitude faster and more easily than would manual correction. The most important characteristic of the text editor is its convenience for the user. Such convenience requires a simple, mnemonic command language which is easy t… more
Date: March 1984
Creator: Hwa, Shu-Jen
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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