Browsing CE Theses and Dissertations by Subject "Electronic dissertations"
Now showing items 1-20 of 682
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A comprehensive cost estimation for additive manufacturing
(Wichita State University, 2021-07)Additive Manufacturing (AM) is an emerging manufacturing method by which Computer-Aided Design (CAD) models are directly made into products and structures. Layers of material, such as polymers, metals, ceramics, composites, ... -
A DC-DC converter with high-voltage step-up ratio and reduced-voltage stress for renewable energy generation systems
(Wichita State University, 2018-12)This research work presents a high gain direct current-direct current (DC-DC) converter which is derived from a traditional boost converter. Electrical power systems are changing from a centralized generation model to a ... -
A design of experiment and Kriging-based model for studying the dynamics of multibody mechanical systems with revolute joint clearance
(Wichita State University, 2013-05)Over the last two decades, extensive work has been conducted to study the dynamic effect of the joint clearances in multibody mechanical systems. In contrast, little work has been devoted to optimize the performance of ... -
A flexible application layer approach to data aggregation
(Wichita State University, 2014-07)Data aggregation techniques traditionally utilize cross-layer optimizations, which prove challenging to implement and are applicable only to a few related scenarios, while each new scenario requires a new approach. Proposed ... -
A framework for measuring post-attack system-wide anonymity in anonymous communication systems
(Wichita State University, 2018-12)We develop techniques for measuring the amount of anonymity provided by anonymity systems in the aftermath of attacks. Anonymity systems are special systems that enable their users to carry out anonymous communication over ... -
A generic Bayesian approach using Laplace approximation for model-based failure prognosis
(Wichita State University, 2013-12)A generic Bayesian framework using Laplace approximation for model-based remaining useful life prognosis is presented in this thesis. The developed generic Bayesian prognosis approach models and updates the remaining useful ... -
A hybrid finite element analysis of shot peen contour forming using residual stress measurements
(Wichita State University, 2013-07)In order to develop surfaces that have the proper curvature for aerospace structures, it is sometimes necessary to use shot peen forming, also known as contour forming, to create the desired shape in a piece of metal. Since ... -
A mattress contact model for a musculoskeletal simulation of human rolling
(Wichita State University, 2020-07)Limited mobility affects a lot of people, including those who have recently had surgery or major trauma, the geriatric population, and people with disabilities. Many people with limited mobility cannot reposition themselves ... -
A meshing technique for unsteady computational fluid dynamics solutions for rapidly changing boundaries and internal configurations
(Wichita State University, 2015-05)A method to generate structured meshes is developed that allows for rapid re-meshing of CFD problems that have rapidly changing boundaries or internal configurations. These types of problems have typically been solved by ... -
A method for generating near optimal t-closed equivalence classes
(Wichita State University, 2021-05)A huge volume of data emanates from various digital sources, this data having sensitive information is being stored and released for purposes that serve the common good through the advancement of knowledge. Organizations ... -
A novel finite element for modeling a fastener in a lap joint assembly
(Wichita State University, 2014-12)This work documents the development of a novel finite element. This element introduces parameters that allow more accurate modeling for the specific application of mechanically fastened lap joints. The research here bridges ... -
A study of the effect of vibration on accuracy of 3D-printed parts via vat-photopolymerization
(Wichita State University, 2020-12)Additive Manufacturing (AM) technology has emerged as a promising alternative for many industries, including aerospace, space, automobile, medical and biomedical. This is due to AM’s advantages over traditional manufacturing ... -
A support vector machine approach to identification of proteins relevant to learning in a mouse model of Down Syndrome
(Wichita State University, 2016-05)Down Syndrome is a fairly common disorder causing intellectual disability. Although there is no treatment for the learning difficulties associated with Down Syndrome, the drug memantine has been shown to improve learning ... -
Accounting of energy consumption from Wi-Fi interface in portable devices
(Wichita State University, 2010-12)Various reports about greenhouse emissions over the past decade have raised the global consciousness regarding worldwide energy consumption in various arenas. The time has come to adopt energy-efficient methods in all ... -
Achievable rate for Amplify-and-Forward relay system at low SNR
(Wichita State University, 2011-05)In this thesis, the achievable rate at low SNR is established for Amplify-and-Forward (AF) cooperative system with a source node, a destination node and a relay node. To characterize the effect of relay locations, an ... -
Acoustic absorption properties of granular and 3D printed aerogels
(Wichita State University, 2020-12)Aerogel is a diverse class of nano-porous ultralight solid material. This research examines the acoustic properties of aerogel-based structures and evaluates their suitability for aircraft noise-reduction applications. ... -
Acoustic evaluation of the bell 699 rotor on the tiltrotor test rig in the national full-scale aerodynamics complex 40- by 80- foot wind tunnel
(Wichita State University, 2020-12)Aircraft noise is a growing problem in the air travel industry [1]. Urban air mobility (UAM) is a new movement to use rotorcraft to fly in and between large cities to alleviate ground traffic congestion [2]. Aircraft noise ... -
Adaptive control for fault tolerant autonomous launch and recovery
(Wichita State University, 2017-05)This work presents the use of adaptive control methodologies for the recovery to an aircraft carrier of an autonomous fixed wing aircraft. The control architecture used is model reference adaptive control that is implemented ... -
Adaptive control of elastic aircraft
(Wichita State University, 2010-12)This thesis documents the development of an adaptive controller designed to control the elastic aircraft dynamics of a generic general aviation aircraft. The elastic aircraft equations of motion are derived using ... -
Adaptive critic flight control for a general aviation aircraft: Simulations for the beech bonanza fly-by-wire testbed
(Wichita State University, 2007-07)An adaptive and reconfigurable flight control system is developed for a general aviation aircraft. The flight control system consisting of two neural networks is developed using a two phase procedure called the pre-training ...