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open access

Multi-perspective, Multi-modal Image Registration and Fusion

Multi-modal image fusion is an active research area with many civilian and military applications. Fusion is defined as strategic combination of information collected by various sensors from different locations or different types in order to obtain a better understanding of an observed scene or situation. Fusion of multi-modal images cannot be completed unless these two modalities are spatially aligned. In this research, I consider two important problems. Multi-modal, multi-perspective image reg… more

Date: August 2012

Creator: Belkhouche, Mohammed Yassine

Item Type: Thesis or Dissertation

Partner: UNT Libraries

Integrating Multiple Deep Learning Models for Disaster Description in Low-Altitude Videos

Computer vision technologies are rapidly improving and becoming more important in disaster response. The majority of disaster description techniques now focus either on identify objects or categorize disasters. In this study, we trained multiple deep neural networks on low-altitude imagery with highly imbalanced and noisy labels. We utilize labeled images from the LADI dataset to formulate a solution for general problem in disaster classification and object detection. Our research integrated an… more

Date: December 2022

Creator: Wang, Haili

Item Type: Thesis or Dissertation

Partner: UNT Libraries

Cooperative Perception for Connected Autonomous Vehicle Edge Computing System

This dissertation first conducts a study on raw-data level cooperative perception for enhancing the detection ability of self-driving systems for connected autonomous vehicles (CAVs). A LiDAR (Light Detection and Ranging sensor) point cloud-based 3D object detection method is deployed to enhance detection performance by expanding the effective sensing area, capturing critical information in multiple scenarios and improving detection accuracy. In addition, a point cloud feature based cooperative… more

Date: August 2020

Creator: Chen, Qi

Item Type: Thesis or Dissertation

Partner: UNT Libraries

Optimization of Massive MIMO Systems for 5G Networks

In the first part of the dissertation, we provide an extensive overview of sub-6 GHz wireless access technology known as massive multiple-input multiple-output (MIMO) systems, highlighting its benefits, deployment challenges, and the key enabling technologies envisaged for 5G networks. We investigate the fundamental issues that degrade the performance of massive MIMO systems such as pilot contamination, precoding, user scheduling, and signal detection. In the second part, we optimize the perfor… more

Date: August 2020

Creator: Chataut, Robin

Item Type: Thesis or Dissertation

Partner: UNT Libraries

Integrating Multiple Deep Learning Models to Classify Disaster Scene Videos

Recently, disaster scene description and indexing challenges attract the attention of researchers. In this dissertation, we solve a disaster-related multi-labeling task using a newly developed Low Altitude Disaster Imagery dataset. In the first task, we realize video content by selecting a set of summary key frames to represent the video sequence. Through inter-frame differences, the key frames are generated. The key frame extraction of disaster-related video clips is a powerful tool that can e… more

Date: December 2021

Creator: Li, Yuan

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Using Blockchain to Ensure Reputation Credibility in Decentralized Review Management

In recent years, there have been incidents which decreased people's trust in some organizations and authorities responsible for ratings and accreditation. For a few prominent examples, there was a security breach at Equifax (2017), misconduct was found in the Standard & Poor's Ratings Services (2015), and the Accrediting Council for Independent Colleges and Schools (2022) validated some of the low-performing schools as delivering higher standards than they actually were. A natural solution to t… more

Date: December 2023

Creator: Zaccagni, Zachary James

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Maintaining Web Applications Integrity Running on RADIUM

Computer security attacks take place due to the presence of vulnerabilities and bugs in software applications. Bugs and vulnerabilities are the result of weak software architecture and lack of standard software development practices. Despite the fact that software companies are investing millions of dollars in the research and development of software designs security risks are still at large. In some cases software applications are found to carry vulnerabilities for many years before being ide… more

Date: August 2015

Creator: Ur-Rehman, Wasi

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Simulink® Based Design and Implementation of a Solar Power Based Mobile Charger

Electrical energy is used at approximately the rate of 15 Terawatts world-wide. Generating this much energy has become a primary concern for all nations. There are many ways of generating energy among which the most commonly used are non-renewable and will extinct much sooner than expected. Very active research is going on both to increase the use of renewable energy sources and to use the available energy with more efficiency. Among these sources, solar energy is being considered as the most a… more

Date: May 2016

Creator: Mukka, Manoj Kumar

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

An Empirical Study of How Novice Programmers Use the Web

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

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Evaluation Techniques and Graph-Based Algorithms for Automatic Summarization and Keyphrase Extraction

Automatic text summarization and keyphrase extraction are two interesting areas of research which extend along natural language processing and information retrieval. They have recently become very popular because of their wide applicability. Devising generic techniques for these tasks is challenging due to several issues. Yet we have a good number of intelligent systems performing the tasks. As different systems are designed with different perspectives, evaluating their performances with a gene… more

Date: August 2016

Creator: Hamid, Fahmida

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Validation and Evaluation of Emergency Response Plans through Agent-Based Modeling and Simulation

Biological emergency response planning plays a critical role in protecting the public from possible devastating results of sudden disease outbreaks. These plans describe the distribution of medical countermeasures across a region using limited resources within a restricted time window. Thus, the ability to determine that such a plan will be feasible, i.e. successfully provide service to affected populations within the time limit, is crucial. Many of the current efforts to validate plans are in … more

Date: May 2018

Creator: Helsing, Joseph

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Computational Methods to Optimize High-Consequence Variants of the Vehicle Routing Problem for Relief Networks in Humanitarian Logistics

Optimization of relief networks in humanitarian logistics often exemplifies the need for solutions that are feasible given a hard constraint on time. For instance, the distribution of medical countermeasures immediately following a biological disaster event must be completed within a short time-frame. When these supplies are not distributed within the maximum time allowed, the severity of the disaster is quickly exacerbated. Therefore emergency response plans that fail to facilitate the transpo… more

Date: August 2018

Creator: Urbanovsky, Joshua C.

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Application-Specific Things Architectures for IoT-Based Smart Healthcare Solutions

Human body is a complex system organized at different levels such as cells, tissues and organs, which contributes to 11 important organ systems. The functional efficiency of this complex system is evaluated as health. Traditional healthcare is unable to accommodate everyone's need due to the ever-increasing population and medical costs. With advancements in technology and medical research, traditional healthcare applications are shaping into smart healthcare solutions. Smart healthcare helps in… more

Date: May 2018

Creator: Sundaravadivel, Prabha

Item Type: Thesis or Dissertation

Partner: UNT Libraries

Multi-Source Large Scale Bike Demand Prediction

Current works of bike demand prediction mainly focus on cluster level and perform poorly on predicting demands of a single station. In the first task, we introduce a contextual based bike demand prediction model, which predicts bike demands for per station by combining spatio-temporal network and environment contexts synergistically. Furthermore, since people's movement information is an important factor, which influences the bike demands of each station. To have a better understanding of peopl… more

Date: May 2020

Creator: Zhou, Yang

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Leader-Follower Model and Impact of Mobility on Consensus Building

Wireless sensor networks are an indispensable tool in this highly connected world. WSNs have been the focus of research efforts in areas of communication, electronics and control for many years. Advancements in the fields of MEMS, RF and digital circuit technology has led to the development of low cost and extremely power efficient smart sensors. This has led to the need of a fast, reliable and inexpensive method of consensus building for these sensor networks. Basic concepts of graph theory an… more

Date: May 2017

Creator: Singh, Ramanpreet

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

A Study of Mobility Models based on Spatial Node Distribution and Area Coverage

Mobile wireless sensor networks are not widely implemented in the real world, even after years of research carried out in this field. One reason is the lack of understanding of the impact that mobility has on network performance. The simulation and emulation of mobile wireless sensor networks is necessary before they are deployed for the real-world applications. This thesis presents a simulation-based study of different mobility models. The total area coverage that depends on the pattern of nod… more

Date: May 2017

Creator: Alla, Sindhu

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

GPS CaPPture: a System for GPS Trajectory Collection, Processing, and Destination Prediction

In the United States, smartphone ownership surpassed 69.5 million in February 2011 with a large portion of those users (20%) downloading applications (apps) that enhance the usability of a device by adding additional functionality. a large percentage of apps are written specifically to utilize the geographical position of a mobile device. One of the prime factors in developing location prediction models is the use of historical data to train such a model. with larger sets of training data, pred… more

Date: May 2012

Creator: Griffin, Terry W.

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Skin Detection in Image and Video Founded in Clustering and Region Growing

Researchers have been involved for decades in search of an efficient skin detection method. Yet current methods have not overcome the major limitations. To overcome these limitations, in this dissertation, a clustering and region growing based skin detection method is proposed. These methods together with a significant insight result in a more effective algorithm. The insight concerns a capability to define dynamically the number of clusters in a collection of pixels organized as an image. In … more

Date: August 2019

Creator: Islam, A B M Rezbaul

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Toward a Data-Type-Based Real Time Geospatial Data Stream Management System

The advent of sensory and communication technologies enables the generation and consumption of large volumes of streaming data. Many of these data streams are geo-referenced. Existing spatio-temporal databases and data stream management systems are not capable of handling real time queries on spatial extents. In this thesis, we investigated several fundamental research issues toward building a data-type-based real time geospatial data stream management system. The thesis makes contributions in … more

Date: May 2011

Creator: Zhang, Chengyang

Item Type: Thesis or Dissertation

Partner: UNT Libraries

captions transcript

Skin Detection in Image and Video

Video from the Fall 2018 3 Minute Thesis (3MT®) Final Competition. In this video, ABM Rezbaul Islam presents his research methods, findings, and its significance in non-technical language.

Date: November 17, 2018

Duration: 3 minutes 15 seconds

Creator: Islam, A. B. M. Rezbaul

Item Type: Video

Partner: UNT College of Engineering

open access

Radio Resource Control Approaches for LTE-Advanced Femtocell Networks

The architecture of mobile networks has dramatically evolved in order to fulfill the growing demands on wireless services and data. The radio resources, which are used by the current mobile networks, are limited while the users demands are substantially increasing. In the future, tremendous Internet applications are expected to be served by mobile networks. Therefore, increasing the capacity of mobile networks has become a vital issue. Heterogeneous networks (HetNets) have been considered as a … more

Date: August 2018

Creator: Alotaibi, Sultan Radhi

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Influence of Underlying Random Walk Types in Population Models on Resulting Social Network Types and Epidemiological Dynamics

Epidemiologists rely on human interaction networks for determining states and dynamics of disease propagations in populations. However, such networks are empirical snapshots of the past. It will greatly benefit if human interaction networks are statistically predicted and dynamically created while an epidemic is in progress. We develop an application framework for the generation of human interaction networks and running epidemiological processes utilizing research on human mobility patterns and… more

Date: December 2016

Creator: Kolgushev, Oleg

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Detection of Ulcerative Colitis Severity and Enhancement of Informative Frame Filtering Using Texture Analysis in Colonoscopy Videos

There are several types of disorders that affect our colon’s ability to function properly such as colorectal cancer, ulcerative colitis, diverticulitis, irritable bowel syndrome and colonic polyps. Automatic detection of these diseases would inform the endoscopist of possible sub-optimal inspection during the colonoscopy procedure as well as save time during post-procedure evaluation. But existing systems only detects few of those disorders like colonic polyps. In this dissertation, we address … more

Date: December 2015

Creator: Dahal, Ashok

Item Type: Thesis or Dissertation

Partner: UNT Libraries

open access

Formation Control and Path Planning Strategies for Unmanned Aerial Vehicle Swarms

This dissertation focuses on the path planning of unmanned aerial vehicle (UAV) swarms under distributed and hybrid control scenarios. It presents two such models and analyzes them both from theory and practice. In the first method, a distributed formation control strategy for UAV swarm based on consensus law is presented. This model makes use of the fundamental concepts of leader-follower structure, social potential functions, and algebraic graph theory to jointly address flocking and de-confl… more

Date: August 2021

Creator: Mukherjee, Srijita

Item Type: Thesis or Dissertation

Partner: UNT Libraries