UNT Libraries - 22 Matching Results

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open access

Computer Realization of Human Music Cognition

Description: This study models the human process of music cognition on the digital computer. The definition of music cognition is derived from the work in music cognition done by the researchers Carol Krumhansl and Edward Kessler, and by Mari Jones, as well as from the music theories of Heinrich Schenker. The computer implementation functions in three stages. First, it translates a musical "performance" in the form of MIDI (Musical Instrument Digital Interface) messages into LISP structures. Second, the var… more
Date: August 1988
Creator: Albright, Larry E. (Larry Eugene)
Item Type: Refine your search to only Thesis or Dissertation
open access

Multiple Window Editor

Description: This paper is written to present the design purpose and design process of the Multiple Window Editor. Multiple Window Editor is a software which allows the user to edit or view different files or the same file on the screen by the window facilities provided by this software. All the windows can be dynamically created, changed, moved, and destroyed. The main purpose of this program is to improve the programming environment for the users. The design motivations will be introduced through the comp… more
Date: June 1986
Creator: Alphy, Yu Cherng-Der
Item Type: Refine your search to only Thesis or Dissertation
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
open access

Inheritance Problems in Object-Oriented Database

Description: This research is concerned with inheritance as used in object-oriented database. More specifically, partial bi-directional inheritance among classes is examined. In partial inheritance, a class can inherit a proper subset of instance variables from another class. Two subclasses of the same superclass do not need to inherit the same proper subset of instance variables from their superclass. Bi-directional partial inheritance allows a class to inherit instance variables from its subclass. The pro… more
Date: May 1989
Creator: Auepanwiriyakul, Raweewan
Item Type: Refine your search to only Thesis or Dissertation
open access

Defensive Programming

Description: This research explores the concepts of defensive programming as currently defined in the literature. Then these concepts are extended and more explicitly defined. The relationship between defensive programming, as presented in this research, and current programming practices is discussed and several benefits are observed. Defensive programming appears to benefit the entire software life cycle. Four identifiable phases of the software development process are defined, and the relationship between… more
Date: May 1980
Creator: Bailey, L. Mark
Item Type: Refine your search to only Thesis or Dissertation
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
open access

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
open access

Triangle: A Teaching Program of High School Geometry

Description: Among the early applications of computers, one can find frequent mention of intelligent instructional systems. Such intelligent instructional systems represent a new generation of learner-based computer aided instruction, preceded in time by the original frame-based systems and an intervening generation of expert-based CAI. The history of CAI is characterized by three generations: Frame-based CAI, Expert-based CAI and Learner-based CAI.
Date: August 1983
Creator: Chen, Yei-Huang
Item Type: Refine your search to only Thesis or Dissertation
open access

The Object-Oriented Database Editor

Description: Because of an interest in object-oriented database systems, designers have created systems to store and manipulate specific sets of abstract data types that belong to the real world environment they represent. Unfortunately, the advantage of these systems is also a disadvantage since no single object-oriented database system can be used for all applications. This paper describes an object-oriented database management system called the Object-oriented Database Editor (ODE) which overcomes this d… more
Date: December 1989
Creator: Coats, Sidney M. (Sidney Mark)
Item Type: Refine your search to only Thesis or Dissertation
open access

Information Storage and Retrieval Systems

Description: This thesis describes the implementation of a general purpose personal information storage and retrieval system. Chapter one contains an introduction to information storage and retrieval. Chapter two contains a description of the features a useful personal information retrieval system should contain. This description forms the basis for the implementation of the personal information storage and retrieval system described in chapter three. The system is implemented in UCSD Pascal on an Apple II … more
Date: May 1983
Creator: Creech, Teresa Adams
Item Type: Refine your search to only Thesis or Dissertation
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
open access

A C Navigational System

Description: The C Navigational System (CNS) is a proposed programming environment for the C programming language. The introduction covers the major influences of programming environments and the components of a programming environment. The system is designed to support the design, coding and maintenance phases of software development. CNS provides multiple views to both the source and documentation for a programming project. User-defined and system-defined links allow the source and documentation to be hie… more
Date: May 1989
Creator: Hammerquist, James D. (James Daniel)
Item Type: Refine your search to only Thesis or Dissertation
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
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
open access

Macro - Preprocessor for 6809 Cross Assembler

Description: It is frequently considered to be apparent two stages during assembly time. The first is the preprocessor stage in which a single instruction called the micro instruction is replaced with the sequence of instructions called the macro definition. The second is the processor stage in which the output from the first stage is assembled into machine language instructions for a particular computer. This paper descibes the first one which is macro-preprocessor stage.
Date: June 1982
Creator: Lee, Charlie H.
Item Type: Refine your search to only Thesis or Dissertation
open access

Computer Graphics Primitives and the Scan-Line Algorithm

Description: This paper presents the scan-line algorithm which has been implemented on the Lisp Machine. The scan-line algorithm resides beneath a library of primitive software routines which draw more fundamental objects: lines, triangles and rectangles. This routine, implemented in microcode, applies the A(BC)*D approach to word boundary alignments in order to create an extremely fast, efficient, and general purpose drawing primitive. The scan-line algorithm improves on previous methodologies by limiting … more
Date: December 1988
Creator: Myjak, Michael D. (Michael David)
Item Type: Refine your search to only Thesis or Dissertation
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
open access

Linear Unification

Description: Efficient unification is considered within the context of logic programming. Unification is explained in terms of equivalence classes made up of terms, where there is a constraint that no equivalence class may contain more than one function term. It is demonstrated that several well-known "efficient" but nonlinear unification algorithms continually maintain the said constraint as a consequence of their choice of data structure for representing equivalence classes. The linearity of the Paterson-… more
Date: December 1989
Creator: Wilbanks, John W. (John Winston)
Item Type: Refine your search to only Thesis or Dissertation
open access

Semaphore Solutions for General Mutual Exclusion Problems

Description: Automatic generation of starvation-free semaphore solutions to general mutual exclusion problems is discussed. A reduction approach is introduced for recognizing edge-solvable problems, together with an O(N^2) algorithm for graph reduction, where N is the number of nodes. An algorithm for the automatic generation of starvation-free edge-solvable solutions is presented. The solutions are proved to be very efficient. For general problems, there are two ways to generate efficient solutions. One as… more
Date: August 1988
Creator: Yue, Kwok B. (Kwok Bun)
Item Type: Refine your search to only Thesis or Dissertation
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