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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)
Partner: UNT Libraries
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
Partner: UNT Libraries
open access

Cognitive Level Demands of Test Items in State-Adopted Computer Science Textbooks

Description: Test items supplied with seven textbooks approved for use in Computer Science I and II curricula in Texas public schools were categorized by Bloom's taxonomy of educational objectives. Eating was done by a panel of ten judges selected from a group of participants at a taxonomy workshop. The selection criterion was demonstration of at least 80 percent competency in item classification. Judges received a small stipend for completing the rating task. Of 2020 possible items, 998 were randomly sele… more
Date: August 1988
Creator: Aman, James R.
Partner: UNT Libraries
open access

Concurrent Pattern Recognition and Optical Character Recognition

Description: The problem of interest as indicated is to develop a general purpose technique that is a combination of the structural approach, and an extension of the Finite Inductive Sequence (FI) technique. FI technology is pre-algebra, and deals with patterns for which an alphabet can be formulated.
Date: August 1991
Creator: An, Kyung Hee
Partner: UNT Libraries
open access

Performance Study of Concurrent Search Trees and Hash Algorithms on Multiprocessors Systems

Description: This study examines the performance of concurrent algorithms for B-trees and linear hashing. B-trees are widely used as an access method for large, single key, database files, stored in lexicographic order on secondary storage devices. Linear hashing is a fast and reliable hash algorithm, suitable for accessing records stored unordered in buckets. This dissertation presents performance results on implementations of concurrent Bunk-tree and linear hashing algorithms, using lock-based, partitione… more
Date: May 1996
Creator: Demuynck, Marie-Anne
Partner: UNT Libraries
open access

An Empirical Study of How Novice Programmers Use the Web

Description: Students often use the web as a source of help for problems that they encounter on programming assignments.In this work, we seek to understand how students use the web to search for help on their assignments.We used a mixed methods approach with 344 students who complete a survey and 41 students who participate in a focus group meetings and helped in recording data about their search habits.The survey reveals data about student reported search habits while the focus group uses a web browser plu… more
Date: May 2016
Creator: Tula, Naveen
Partner: UNT Libraries
captions transcript

[Microlab]

Description: A video of b-roll for the informational video about the Microcomputer Lab and how students can use this resource to succeed in computer science classes. This specific video includes footage of people using computers and close ups of the machines.
Date: December 16, 1985
Duration: 22 minutes 39 seconds
Creator: University of North Texas. Center for Media Production.
Partner: UNT Libraries Special Collections
captions transcript

[TI 99/4A Microcomputer Tutorial]

Description: A video of a tutorial on how to operate a Texas Instrument 99/4A computer and how students can utilize the equipment in the microcomputer lab for computer science courses.
Date: January 28, 1986
Duration: 32 minutes 23 seconds
Creator: University of North Texas. Center for Media Production.
Partner: UNT Libraries Special Collections
captions transcript

[Microlab Tutorial]

Description: A video about what the microcomputer lab is and how students can utilize this resource for computer science courses.
Date: January 18, 1986
Duration: 32 minutes 33 seconds
Creator: University of North Texas. Center for Media Production.
Partner: UNT Libraries Special Collections
open access

A Multi-Time Scale Learning Mechanism for Neuromimic Processing

Description: Learning and representing and reasoning about temporal relations, particularly causal relations, is a deep problem in artificial intelligence (AI). Learning such representations in the real world is complicated by the fact that phenomena are subject to multiple time scale influences and may operate with a strange attractor dynamic. This dissertation proposes a new computational learning mechanism, the adaptrode, which, used in a neuromimic processing architecture may help to solve some of these… more
Date: August 1994
Creator: Mobus, George E. (George Edward)
Partner: UNT Libraries
open access

Using Extended Logic Programs to Formalize Commonsense Reasoning

Description: In this dissertation, we investigate how commonsense reasoning can be formalized by using extended logic programs. In this investigation, we first use extended logic programs to formalize inheritance hierarchies with exceptions by adopting McCarthy's simple abnormality formalism to express uncertain knowledge. In our representation, not only credulous reasoning can be performed but also the ambiguity-blocking inheritance and the ambiguity-propagating inheritance in skeptical reasoning are simul… more
Date: May 1992
Creator: Horng, Wen-Bing
Partner: UNT Libraries
open access

Recognition of Face Images

Description: The focus of this dissertation is a methodology that enables computer systems to classify different up-front images of human faces as belonging to one of the individuals to which the system has been exposed previously. The images can present variance in size, location of the face, orientation, facial expressions, and overall illumination. The approach to the problem taken in this dissertation can be classified as analytic as the shapes of individual features of human faces are examined separate… more
Date: December 1994
Creator: Pershits, Edward
Partner: UNT Libraries
open access

Automatic Speech Recognition Using Finite Inductive Sequences

Description: This dissertation addresses the general problem of recognition of acoustic signals which may be derived from speech, sonar, or acoustic phenomena. The specific problem of recognizing speech is the main focus of this research. The intention is to design a recognition system for a definite number of discrete words. For this purpose specifically, eight isolated words from the T1MIT database are selected. Four medium length words "greasy," "dark," "wash," and "water" are used. In addition, four sho… more
Date: August 1996
Creator: Cherri, Mona Youssef, 1956-
Partner: UNT Libraries
open access

A Mechanism for Facilitating Temporal Reasoning in Discrete Event Simulation

Description: This research establishes the feasibility and potential utility of a software mechanism which employs artificial intelligence techniques to enhance the capabilities of standard discrete event simulators. As background, current methods of integrating artificial intelligence with simulation and relevant research are briefly reviewed.
Date: May 1992
Creator: Legge, Gaynor W.
Partner: UNT Libraries
open access

A Highly Fault-Tolerant Distributed Database System with Replicated Data

Description: Because of the high cost and impracticality of a high connectivity network, most recent research in transaction processing has focused on a distributed replicated database system. In such a system, multiple copies of a data item are created and stored at several sites in the network, so that the system is able to tolerate more crash and communication failures and attain higher data availability. However, the multiple copies also introduce a global inconsistency problem, especially in a partitio… more
Date: December 1994
Creator: Lin, Tsai S. (Tsai Shooumeei)
Partner: UNT Libraries
open access

Study of Parallel Algorithms Related to Subsequence Problems on the Sequent Multiprocessor System

Description: The primary purpose of this work is to study, implement and analyze the performance of parallel algorithms related to subsequence problems. The problems include string to string correction problem, to determine the longest common subsequence problem and solving the sum-range-product, 1 —D pattern matching, longest non-decreasing (non-increasing) (LNS) and maximum positive subsequence (MPS) problems. The work also includes studying the techniques and issues involved in developing parallel applic… more
Date: August 1994
Creator: Pothuru, Surendra
Partner: UNT Libraries
open access

The Contributions of Grace Murray Hopper to Computer Science and Computer Education

Description: This study explored the life and work of the late Grace Murray Hopper, Rear Admiral United States Naval Reserve. The study emphasized Hopper's contributions to computer science and computer science education, including her philosophy of teaching and learning, and her pedagogical legacy for today's teachers and scholars of computer science and computer science education.
Date: May 1994
Creator: Mitchell, Carmen L. (Carmen Lois)
Partner: UNT Libraries
captions transcript

[News Clip: Junior tech]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: October 10, 1984, 6:00 p.m.
Duration: 1 minute 34 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
open access

Developing a High-Quality Academic Environment for Broadening Participation of Hispanic Students in Computing

Description: Data management plan for the grant, "Developing a High-Quality Academic Environment for Broadening Participation of Hispanic Students in Computing." The objectives of the grant are to Enhance the education quality and broadening the participation of Hispanic undergraduate students in Computing through new pedagogy adoption, cultural transformation, and offering guided research opportunity for students. The project is also going to study the cultural asset-based education for Hispanic students a… more
Date: 2022-11-01/2025-10-31
Creator: Ding, Junhua
Partner: UNT College of Information
captions transcript

[News Clip: Compu Portable]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: July 29, 1983, 5:00 p.m.
Duration: 1 minute 45 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
open access

An experimental design to study decommitment in a collaborative multi-agent system in a scheduling domain

Description: This article describes the theoretical background and experimental design of new research based on previous multi-agent research on collaborative agents. The research extends the concept of agent decommitment into a resource scheduling domain. The problem is no longer time constrained, however, the number of agents is increased dramatically. The actual experimentation is yet to be performed. The authors state that results of the experimentation will be reported in a future article.
Date: October 4, 2017
Creator: Van Dyne, Michele & Tsatsoulis, Costas
Partner: UNT College of Engineering
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