Digital Commons Network^™

Sedimentation Dynamics Of The Cagayan De Oro River Catchment And The Implications For Its Coastal Marine Environments, Mars P. Tan

Theses

Declines in coastal environment condition can often be attributed to land-based activities in the uplands. This may be the case in some parts of Macajalar Bay, where river plume is observed almost daily. This present study aims to demonstrate the erosion-sedimentation process along the Cagayan de Oro River Catchment to its river mouth, and its implication for the marine coastal habitats. Highlighted in the study are the various natural factors that have influenced the erosion-sedimentation process: its volume; direction; and effects on the coastal habitats.

In the uplands, to account for the influence of catchment spatial heterogeneity and local rainfall …

An Investigation Into The Obstacles And Barriers Preventing Farmers In Rural Areas Using Information Communication Technologies, David O'Leary

Theses

Technology and in particular, mobile devices can help farmers both from a social and business perspective. This study focuses on the areas preventing farmers using smart phones and the downfalls they might be facing on a regular basis in the adoption of mobile devices. The objectives of this study were to identify what devices are being used and for what purpose, identify who helps the farmer when they are in difficulty with their device, identify if broadband is an obstacle and to develop a set of recommendations based on my research for the use of Information and Communication Technologies (ICT) …

Novel Neuroevolution Techniques For The Life Science Domain, Timothy Manning

Theses

The life science domain is a high value research area, both in terms of the benefits in increased knowledge and in societal impact. Much of the research funding has focused on wet lab based approaches to increase visibility into biological processes and producing maximal relevant information on which to make decisions. Given the complexity of biological functions, in many cases this has led to an information overload. Researchers are now able to routinely generate and access petabytes of data as a result of high throughput experiments, and this capability is growing. This data can be difficult to interpret and intractable …

Metabolic Characteristics Of Macrophage Activation With Phenotype Microarrays, Tanya Kathryn D'Souza

Theses

Inflammation is a natural protective response and is characterised by the activation of numerous immune cells, including macrophages which can release a variety of inflammatory mediators. Macrophages play a flexible role in the initiation and effector phases of the immune response and change their behaviour to respond to environmental stimuli. The main objectives in this study were to create and characterise different macrophage behaviours and employ a novel metabolic characterisation platform the Phenotype Microarray^TM to attribute additional characteristics to the currently well recognised phenotypes. Five activated macrophage states were demonstrated and characterised. Unactivated macrophages (MO) demonstrated undetectable levels of …

A Spatial Analysis Of Climate Change Effects On Maize Productivity In Kenya, Dan Wanyama

Theses

Climate change has intensified the risk of catastrophic natural disasters all over the world. Though impacts of the change are global, developing countries are more at risk. Although agriculture remains the backbone of Kenya’s economy, the sector’s dependence on natural resources increases its vulnerability to the aggravating impacts of climate change and variability. Climate system variations that impact staple food crops like maize (Zea mays) ultimately threaten the food security of the nation. This study examined environmental factors affecting maize productivity through regression analysis. A GIS suitability model for maize was also developed to identify Kenya’s different levels of suitability …

Visual-Linguistic Semantic Alignment: Fusing Human Gaze And Spoken Narratives For Image Region Annotation, Preethi Vaidyanathan

Theses

Advanced image-based application systems such as image retrieval and visual question answering depend heavily on semantic image region annotation. However, improvements in image region annotation are limited because of our inability to understand how humans, the end users, process these images and image regions. In this work, we expand a framework for capturing image region annotations where interpreting an image is influenced by the end user's visual perception skills, conceptual knowledge, and task-oriented goals. Human image understanding is reflected by individuals' visual and linguistic behaviors, but the meaningful computational integration and interpretation of their multimodal representations (e.g. gaze, text) remain …

Automated Grading And Feedback Of Regular Expressions, Himesh Kakkar

Theses

To keep up with the current spread of education, there has arisen the need to have automated tools to evaluate assignments. As a part of this thesis, we have developed a technique to evaluate assignments on regular expressions (regexes). Every student is different and so is their solution, thus making it hard to have a single approach to grade it all. Hence, in addition to the existing techniques, we offer a new way of evaluating regexes. We call this the regex edit distance. The idea behind this is to find the minimal changes that we could make in a wrong …

A Novel 3d Printed Leg Design For A Biped Robot, Matthew A. Haywood

Theses

This paper proposes a novel leg design for a humanoid robot that can be 3D printed. More explicitly, the efforts of this paper are to bring some of the more complex leg designs seen in large scale bipedal robot into the realm of smaller bipeds while still allowing for it to be easily reproducible or modified. In order to accomplish this 3D printing technology was utilized, as well as an iterative design process. An ankle and knee powered by linear actuators were first constructed to test the conceptual design of the leg. This was followed by a complete leg design …

Beauty Brand Versus New Media: How Have Communications Tactics Changed Within A Large Cosmetic Brand & How Have They Incorporated New Media Pr Tactics, Ruth Walsh

Theses

This research study aims to investigate and analyse what is working in the cosmetic PR industry for beauty brands; bloggers; and beauty consumers. There has been limited research conducted into this important topic and less so into the PR tactics used by large cosmetic brands. This thesis first examines that said limited scope of literature that relates to the cosmetic PR industry but not well and it further examines the viewpoints of well-known PR professionals. From this research, a triangulation approach to data collecting was outlined and conducted that included two interviews with beauty industry experts; a PR professional, a …

An Application Of Time Series Methods To Investigate Eu Dairy Commodity Price Dynamics, Dennis Bergmann

Theses

Fundamental changes to the common agricultural policy (CAP) have led to greater market orientation which in turn has resulted in significantly changed price dynamics of EU dairy prices. These changed dynamics include sharply increased price variability of EU farm gate milk prices as well EU dairy commodity prices such as butter and Skimmed Milk Powder (SMP). In addition it was expected that EU dairy prices will align to Word dairy prices. This alignment of prices would also see an alignment of volatility levels which were significantly higher for World dairy prices than EU dairy prices. The aim of this thesis …

The Impact Of Drone Technology In Surveying In Ireland: An Examination Of The Accuracy Level Of Drones., Eleni Zintiridou

Theses

Abstract The society that we are living in could unquestionably be characterised as a community of technology. One of the most recent technological inventions is the drone, of which the usage is expected to triple by 2020, worldwide. Through the development and increasing popularity of the drones, the ability of latter to affect the surveying industry in Ireland has become a contemporary subject of study in the field of surveying, which is, however, in its infant stage. The presented dissertation is dealing with the ability of drones to impact the way that surveys are being conducted in Ireland, and also …

Development Of A Novel Kalman Filter Bank Predictor To Optimally Schedule The Renewable Energy Contribution Within A Micro-Grid, Conor Lynch

Theses

This PhD thesis presents a novel Kalman Filter Bank (KFB) methodology. The novel KFB is applied to predict and optimally schedule the operation of micro-grid energy resources with a public fixed-grid connection and an auxiliary battery storage backup facility. This methodology relies on a sliding single time step forecast projection to accurately acquire the anticipated schedule for a range of time dependent parameters, stochastic by nature, that have inherent embedded cyclical patterns. The innovative feature here consists of a novel bank of hourly adjacent Kalman Filter estimators, which operate in synchronism, for accurate parameter prediction over a selected time horizon. …

Development Of A Dynamic Cfd Model For Offshore Oscillating Water Columns With Non-Linear Interactions, Ken O'Connell

Theses

This thesis focuses on the development of a state of the art modelling technique for offshore Oscillating Water Column (OWC) type Wave Energy Converters (WEC) using Computational Fluid Dynamics (CFD). Current literature indicates a limited amount of work has been completed on studying these devices containing non-linear time dependent flow phenomenon. Initially, a 2D Numerical Wave Tank (NWT) is studied to reduce discretisation error in order to reproduce accurately propagating waves. Further development into a 3D domain permits the geometrical requirements of an OWC type spar buoy to be included.

In parallel, a single Degree of Freedom (DOF) model is …

Semiconductor Materials And Devices For 2 Micron Generation, Dzianis Saladukha

Theses

In the last century, semiconductor research has led to significant changes in the fields of communication, medicine, the environment, and many others. Semiconductor devices provide a relatively simple and effective way to convert electrical energy to light and vice versa. Devices based on semiconductor materials of various kinds provide interaction of an electromagnetic signal in the range of wavelengths with a medium. Examples of such devices are LED lamps, photovoltaic cells, thermometers, gas sensors, cameras, and many others. The study of various semiconductors broadens the range of application of photonics. This work is based on the study of materials which …

Implementing Sensory And Emotional Intelligence Into Architectural Design Education In Ireland., Aoife Hayes

Theses

The 21^st century, as a whole, has seen massive developments in smart technologies, environmental strategies and architectural form. The 3D built environment is advancing on a daily basis, but has become a very two dimensional experience, frontloaded with screened imagery and visual stimuli, which has encouraged a trend of ocular-centric dominance. Unfortunately, as a result of this, the human experience is often lost. The prioritisation of the multi-sensorial human experience is not only at threat from this visual predominance, but also environmental concerns and economy seem to hold a greater place on the hierarchy. Research carried out by the …

In Vitro Three-Dimensional Skin Tissue Constructs, Tinashe Dereck Gombedza

Theses

Human skin provides fortification against peripheral threats which may compromise the integrity and health of the human body. Its presence as the largest human organ forms a protective barrier making it an effective first line of defence against pathogenic, chemical and physical damage. Tissue engineering technology has enabled the development of in vitro three-dimensional (3D) organotypic skin cultures in order to understand the skin's physiology and architecture. This advancement has enabled the use of 3D skin model platforms to study skin diseases and conditions as well as facilitate drug discovery, clinical research and cosmetic product development.

In this study, an …

Strategically Managing Product Innovation To Create Consumer Value: An Analysis In The Context Of The Australian Electric Vehicle Market, Brendan Koehler

Theses

This thesis encompasses a body of research which looks to explore how strategic management, consumer value and product innovation interrelate. In particular, this research will evaluate such a unilateral relationship in specific reference to product innovations developed as a result of emerging and disruptive technology. Therefore, this research will be conducted in the context of the Australian electric vehicle industry. This industry was selected as it has displayed traits of an industry with companies that have a desire to incorporate electric vehicle product innovations into their portfolio from a strategic perspective; yet these product innovations have no particular consumer demand …

Mobile Learning In Early Childhood Education: A School-University Partnership Model, Serena Davie

Theses

Mobile learning (mLearning) devices are ideal for 21st century learning. mLearning devices are light and, therefore, mobile so that young children can use them anywhere. Examples of mLearning devices are tablet computers, programmable robots such as Bee-Bots and robotic Lego. The term 21st century learning is used around the world and includes the skills of collaboration, communication, new literacy, creativity, critical thinking, and problem-solving. New literacy has emerged because of new technologies and being literate in the 21st century now includes being digitally literate. However, mLearning is not widely used in early childhood education despite the fact that schools are …

Investigating The Parameters That Influence The Particle Mass Concentration Rates In A Grade C Cleanroom., Nazar H. Baker

Theses

The cleanroom design engineers use the guidelines tables, in which the Air Change Rates (ACHs) are determined based on the room cleanliness class. These guidelines are based on experience and do not fully address many other critical variables that influence the particulate level and particle distribution. These simplified approaches could often cause significant energy waste. In the last five decades, a number of mathematical models were developed to determine the airflow required in cleanrooms. As a consequence of the approximation of many critical variables in these models, these models can only be used as a qualitative indicator of the airflow …

Adaptive Fuzzy Control Of Quadrotor, Muhammad Awais Sattar

Theses

In this thesis, intelligent controllers are designed to control attitude for quadrotor UAV (Unmanned Aerial Vehicle).Quadrotors have a variety of applications in real time e.g. surveillance, inspection, search, rescue and reducing the human force in undesirable conditions. Quadrotors are generally unstable systems; the kinematics of quadrotor resembles the kinematics of inverted pendulum. In order to avoid the possibility of any kind of damages, the mathematical model of quadrotor should be developed and after that, the different control techniques can be implemented. This thesis presents a detailed simulation model for a Quadrotor. For the control purpose, three classical and modern control …

Predictive Networking And Optimization For Flow-Based Networks, Michael Arnold

Theses

Artificial Neural Networks (ANNs) were used to classify neural network flows by flow size. After training the neural network was able to predict the size of a flows with 87% accuracy with a Feed Forward Neural Network. This demonstrates that flow based routers can prioritize candidate flows with a predicted large number of packets for priority insertion into hardware content-addressable memory.

Validating Petri Net Models Of Cyberattacks, Nicholas M. Christensen

Theses

As part of a team project modeling computer system vulnerabilities and cyberattacks, this research focused on Petri net models and validation methods for them. First, the chosen target, Metasploitable, was scanned for vulnerabilities, which were matched to Common Attack Pattern Enumeration and Classification (CAPEC) entries. For a preliminary validation, the models were compared with the entries. Then a dynamic validation was applied to two models of CAPEC entries and to one model of a known backdoor, Ingreslock. Three experimental cyberattacks were compared with their respective models, giving partial validation. The results of the comparison show that this dynamic method was …

From Logology To Dramatism : Kenneth Burke And Kurt Vonnegut As Critical Companions, Eryn Johnson

Theses

Although Kenneth Burke originally theorized language as symbolic action and Dramatism with literary analysis in mind, he remains unthought of by literary scholars. With the aim of reclaiming Dramatism for literary analysis, I grapple with Fredric Jameson’s criticisms of Burke in order to show how Dramatism maintains potential for productive literary analysis, particularly in regard to ideology. In doing so, I apply Burke’s Dramatistic method to a series of Kurt Vonnegut novels in order to investigate the similarities between Burke and Vonnegut as well as to demonstrate a fruitful literary analysis by way of Burke’s method.Though their writings differ generically, …

A Closed-Form Solution To The Aeroelastic Response Of An Elastic Plate In Axial Flow, Cory Ryan Medina

Theses

The unsteady aeroelastic response of an elastic plate immersed in an axial flow addresses many real-world applications and problems from plate flutter, bio-locomotion, to deforming airfoils. However, the analysis is challenging due to the coupling between the structure and fluid. This study presents a closed-form analytical solution to the two-way coupled aeroelastic response of a two-dimensional elastic plate in axial potential flow. The coupled model utilizes linearized beam theory and linearized unsteady thin airfoil theory. The coupled equations of motion are solved via Galerkin’s method, where closed-form solutions for the plate deformation are obtained by introducing Chebyshev series to solve …

A Study Of Optical And Physical Probe Diagnostic Techniques For Atmospheric-Pressure Plasmas, Steven J. Doyle

Theses

This study investigated the application of physical probes and optical emission spectroscopy to an atmospheric microplasma jet to determine the gas temperature, electron temperature, and electron density of the plasma. Emission lines and species of interest were chosen to determine the impact of experimental configuration on the accuracy of measurements. The results showed that there is a noticeable difference in not only each of the different gas temperature determination methods, but also for individual argon spectral lines when using van der Waals broadening. The usefulness of argon spectral lines also appears to vary with electrode configurations and temperatures. Electron temperature …

Examining The Role Of Different Types Of Pressure In Math Anxiety And Math Performance, Kenneth C.E. Hammett

Theses

Math anxiety can negatively impact individuals’ performance on math tasks, especially those tasks with high working memory demands. Individuals who are highly math anxious often avoid situations that involve performing math tasks. The level of anxiety experienced by individuals may be affected by different pressure situations. The present study examined the role of different types of pressure (speed, accuracy, or combination [speed + accuracy]) in math anxiety and math performance. Results indicated that experiencing anxiety during a math task has a negative impact on math performance. Results also indicated that speed pressure might be more detrimental to math performance than …

Short-Term Retention Of Location-Identity Bindings For Complex Objects, Alexander Nalbandian

Theses

Knowing what is where is an essential and complex component of human perception. This ability refers to the concept of Situation Awareness (SA). The underlying mechanisms for this ability show parallels to the tracking of a set of identical objects moving on a screen, a theory known as Multiple Object Tracking (MOT) (Pylyshyn & Storm, 1988). This theory was useful for investigating the fundamental factors of visual tracking, but lacked a connection to real-world scenarios. In an attempt to bridge that gap, Oksama and Hyönä (2008) created the Model of Multiple Identity Tracking (MOMIT), which includes unique identities for each …

Implementing Partial Blind Estimation Of Alamouti Space-Time Coding In Software-Defined Radios, Sai Gautham Peesapati

Theses

The aim of this thesis is to develop and study the performance of an algorithm to perform blind estimation of Alamouti space-time coding (STC) on Zedboard’s ARM core and FPGA, and propose improvements based on the collected data. In the first part, previous methods to accomplish blind estimation of Alamouti STC are presented, and a new method that is simple enough for hardware implementation is proposed. The system of linear equations in the final step of the proposed method is not mathematically solvable. Hence, in the next part, the thesis proposes a method to accomplish partial blind estimation of Alamouti …

A Methodology To Quantify Cumulative Damage Function (Cdf) For Integration Into An Object-Oriented Life Cycle Assessment (Lca), Devdatta Deo

Theses

Life Cycle Assessment (LCA) is one of the most widely used tools to determine the environmental impact of products and processes. One of the main concerns with LCA is the limited comparability of the results due to limitations in defining the functional unit. This affects goal and scope definition of the LCA studies. A result, an object-oriented framework for LCA that integrates functional analysis and systems engineering principles was developed. In this research a cumulative damage function (CDF) to quantify the life of components, subsystems and components was defined. However, the development of the methodology and underlying principles to develop …

Radiometrically Accurate Thermal Vehicle Targets For Synthetic Video Development, David B. Rhodes

Theses

Collecting large scientific quality thermal infrared image and video data sets is an expensive time consuming endeavor. Thermal infrared imagers cost much more than comparable visible systems and require skilled experienced operators. Also, time and experienced personnel are required to collect quality ground truth. Often it is advantageous to perform computer simulations as an alternative to collecting image and video data with real camera systems. As long as enough physics is incorporated into the models to give accurately comparable results to real imagery, simulated data can be used interchangeably. Generating synthetic images and video has the added benefit of being …