UNT Theses and Dissertations - 111 Matching Results

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A Real-Time Electronic Sound Analysis System with Graphical User Interface

Description: Noise-induced hearing loss is a serious problem common to musical environments. Current dosimetry technology is primarily designed for industrial environments and not suited for musical settings. At present, there are no government regulations that apply to the educational music environment as it relates to monitoring and prevention of hearing loss. Also, no system exists than can serve as a proactive tool in observation and reporting of sound exposure levels with the goal of hearing conservati… more
Date: August 2011
Creator: Brgulja, Amir
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Partner: UNT Libraries
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Real-Time Finger Spelling American Sign Language Recognition Using Deep Convolutional Neural Networks

Description: This thesis presents design and development of a gesture recognition system to recognize finger spelling American Sign Language hand gestures. We developed this solution using the latest deep learning technique called convolutional neural networks. This system uses blink detection to initiate the recognition process, Convex Hull-based hand segmentation with adaptive skin color filtering to segment hand region, and a convolutional neural network to perform gesture recognition. An ensemble of fou… more
Date: December 2018
Creator: Viswavarapu, Lokesh Kumar
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Partner: UNT Libraries
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Realization of LSTM Based Cognitive Radio Network

Description: This thesis presents the realization of an intelligent cognitive radio network that uses long short term memory (LSTM) neural network for sensing and predicting the spectrum activity at each instant of time. The simulation is done using Python and GNU Radio. The implementation is done using GNU Radio and Universal Software Radio Peripherals (USRP). Simulation results show that the confidence factor of opportunistic users not causing interference to licensed users of the spectrum is 98.75%. The … more
Date: August 2019
Creator: Valluru, Aravind-Deshikh
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Reconfigurable Aerial Computing System: Design and Development

Description: In situations where information infrastructure is destroyed or not available, on-demand information infrastructure is pivotal for the success of rescue missions. In this paper, a drone-carried on-demand information infrastructure for long-distance WiFi transmission system is developed. It can be used in the areas including emergency response, public event, and battlefield. In years development, the Drone WIFI System has developed from single-CPU platform, twin-CPU platform, Atmega2560 platform … more
Date: August 2018
Creator: Gu, Yixin
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Partner: UNT Libraries
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Reliability of Electronics

Description: The purpose of this research is not to research new technology but how to improve existing technology and understand how the manufacturing process works. Reliability Engineering fall under the category of Quality Control and uses predictions through statistical measurements and life testing to figure out if a specific manufacturing technique will meet customer satisfaction. The research also answers choice of materials and choice of manufacturing process to provide a device that will not only m… more
Date: December 2014
Creator: Wickstrom, Larry E.
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Partner: UNT Libraries
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Resilience of Microgrid during Catastrophic Events

Description: Today, there is a growing number of buildings in a neighborhood and business parks that are utilizing renewable energy generation, to reduce their electric bill and carbon footprint. The most current way of implementing a renewable energy generation is to use solar panels or a windmill to generate power; then use a charge controller connected to a battery bank to store power. Once stored, the user can then access a clean source of power from these batteries instead of the main power grid. This … more
Date: May 2018
Creator: Black, Travis Glenn
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Simulation and Performance Analysis of Strategic Air Traffic Management under Weather Uncertainty

Description: In this thesis, I introduce a promising framework for representing an air traffic flow (stream) and flow-management action operating under weather uncertainty. I propose to use a meshed queuing and Markov-chain model---specifically, a queuing model whose service-rates are modulated by an underlying Markov chain describing weather-impact evolution---to capture traffic management in an uncertain environment. Two techniques for characterizing flow-management performance using the model are devel… more
Date: May 2011
Creator: Zhou, Yi
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Partner: UNT Libraries
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Simulink® Based Design and Implementation of Wireless Sensor Networks

Description: A wireless sensor network (WSN) is a spatially distributed network used to monitor the physical and environmental conditions such as temperature, pressure, sound, humidity, heat, etc. WSNs can be modeled using different simulation frameworks like OMNeT++, Prowler, Atarraya, PiccSIM, Network Simulator, etc. In this research, Simulink framework was used to model WSN system. The complete WSN consisting of transmitting nodes, communication channel, and receiver nodes are built in the Simulink frame… more
Date: December 2017
Creator: Nune, Raju
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Partner: UNT Libraries
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Smart Microgrid Energy Management Using a Wireless Sensor Network

Description: Modern power generation aims to utilize renewable energy sources such as solar power and wind to supply customers with power. This approach avoids exhaustion of fossil fuels as well as provides clean energy. Microgrids have become popular over the years, as they contain multiple renewable power sources and battery storage systems to supply power to the entities within the network. These microgrids can share power with the main grid or operate islanded from the grid. During an islanded scenario,… more
Date: December 2018
Creator: Darden, Kelvin S
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Partner: UNT Libraries
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Spectrum Analysis and Prediction Using Long Short Term Memory Neural Networks and Cognitive Radios

Description: One statement that we can make with absolute certainty in our current time is that wireless communication is now the standard and the de-facto type of communication. Cognitive radios are able to interpret the frequency spectrum and adapt. The aim of this work is to be able to predict whether a frequency channel is going to be busy or free in a specific time located in the future. To do this, the problem is modeled as a time series problem where each usage of a channel is treated as a sequence o… more
Date: December 2017
Creator: Hernandez Villapol, Jorge Luis
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Partner: UNT Libraries
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A Study of Anti-collision Multi-tag Identification Algorithms for Passive RFID Systems

Description: The major advantages of radio frequency identification (RFID) technology over barcodes are that the RFID-tagged objects do not require to be in line-of-sight with the reader for their identification and multiple objects can be read simultaneously. But when multiple objects are read simultaneously there is always a problem of collision which reduces the efficiency of the system. This thesis presents a comprehensive study of the dynamic framed slotted ALOHA (DFSA)-based anti-collision multi-tag i… more
Date: May 2010
Creator: Kamineni, Neelima
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A Study of Mobility Models based on Spatial Node Distribution and Area Coverage

Description: 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
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Partner: UNT Libraries
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Synthesis and Design of Microwave Filters and Duplexers with Single and Dual Band Responses

Description: In this thesis the general Chebyshev filter synthesis procedure to generate transfer and reflection polynomials and coupling matrices were described. Key concepts such as coupled resonators, non-resonant nodes have been included. This is followed by microwave duplexer synthesis. Next, a technique to design dual band filter has been described including ways to achieve desired return loss and rejection levels at specific bands by manipulating the stopbands and transmission zeros. The concept of d… more
Date: August 2013
Creator: Mandal, Iman K.
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Teaching Fundamentals of Digital Logic Design and VLSI Design Using Computational Textiles

Description: This thesis presents teaching fundamentals of digital logic design and VLSI design for freshmen and even for high school students using e-textiles. This easily grabs attention of students as it is creative and interesting. Using e-textiles to project these concepts would be easily understood by students at young age. This involves stitching electronic circuits on a fabric using basic components like LEDs, push buttons and so on. The functioning of these circuits is programmed in Lilypad Arduino… more
Date: August 2014
Creator: Inampudi, Sivateja
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Partner: UNT Libraries
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Wireless Signal Conditioning

Description: This thesis presents a new approach to extend and reduce the transmission range in wireless systems. Conditioning is defined as purposeful electromagnetic interference that affects a wireless signal as it propagates through the air. This interference can be used constructively to enhance a signal and increase its energy, or destructively to reduce energy. The constraints and limitations of the technology are described as a system model, and a flow chart is used to describe the circuit process. … more
Date: August 2016
Creator: Valero, Daniel
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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