Physical Sciences and Mathematics Commons^™

Mathematical Analysis Of Self-Heating In Compost Piles, Harvinder Sidhu, Mark Nelson, Nadeem Ansari, Xiao Dong Chen

Associate Professor Mark Nelson

We model the increase in temperature in compost piles or landfill sites due to micro-organisms undergoing exothermic reactions. The model incorporates the heat release due to biological activity within the pile and the heat release due to the oxidation of cellulosic materials. The heat release rate due to biological activity is modelled by a function which is a monotonic increasing function of temperature over a particular range and followed by a monotone decreasing function of temperature. This functionality represents the fact that micro-organisms die or become dormant at high temperatures. The heat release due to the oxidation reaction is modelled …

A Fundamental Analysis Of Continuous Flow Bioreactor And Membrane Reactor Models With Non-Competitive Product Inhibition. Iii. Linear Inhibition, Mark I. Nelson, Wei X. Lim

Associate Professor Mark Nelson

The steady-state production of a product produced through the growth of microorganisms in a continuous flow bioreactor is presented. A generalised reactor model is used in which both the classic well-stirred bioreactor and the idealised membrane bioreactor are considered as special cases. The reaction is assumed to be governed by Monod growth kinetics subject to non-competitive product inhibition. Inhibition is modelled as a decreasing linear function of the product concentration with a finite cut-off. This reaction scheme is well documented in the literature, although a stability analysis of the governing equations has not previously been presented. The steady-state solutions for …

Stable Isotopes And Xrd Investigation Of Gold Mineralization At The Syenite-Hosted Young-Davidson Deposit, Matachewan, Ontario, Niloufar Naderi

Electronic Thesis and Dissertation Repository

The Young-Davidson mine is a syenite-hosted orogenic gold deposit at the western end of the Cadillac-Larder-Lake deformation zone in the southern Abitibi greenstone belt, Canada. This study utilized oxygen isotopes to assess the sources of the fluids and evaluate the role of magmatic and metamorphic fluids in gold mineralization. XRD analyses completed on whole-rock powder samples combined with petrography provides a better understanding of the distribution, timing, and nature of alteration patterns and their relationship to gold mineralization.

Temperatures calculated from mineral separates oxygen isotope thermometry indicate the fluids ranged from approximately 322 ± 25° to 431 ± 30°C. The …

Estimating Subsurface Anisotropy: Combining Waveform Tomography And Simulated Annealing, Michael Victor Afanasiev

Electronic Thesis and Dissertation Repository

Crosshole seismic tomography has been used by Vale to provide geophysical images of mineralized massive sulphides in the Eastern Deeps deposit at Voisey's Bay. High resolution seismic images are presented by applying acoustic waveform tomography to these data. In waveform tomography, an initial model is required which predicts the first arrival traveltimes to within a half-cycle of the lowest frequency in the data. Because seismic velocity anisotropy can be significant, the initial model must quantify the anisotropy, as well as the velocity, in order to meet the half-cycle criterion.

In our case study, difficulties were encountered in generating an accurate …

Radial Velocities Of Galactic O-Type Sars. Ii. Single-Lined Spectroscopic Binaries, S. J. Williams, D. R. Gies, Todd Hillwig, M. V. Mcswain, W. Huang

Todd Hillwig

Assessment Of Regional Climate Model Simulation Estimates Over The Northeast United States, M. A. Rawlins, Raymond S. Bradley, H. F. Diaz

Raymond S Bradley

Given the coarse scales of coupled atmosphere-ocean global climate models, regional climate models (RCMs) are increasingly relied upon for studies at scales appropriate for many impacts studies. We use outputs from an ensemble of RCMs participating in the North American Regional Climate Change Assessment Program (NARCCAP) to investigate potential changes in seasonal air temperature and precipitation between present (1971–2000) and future (2041–2070) time periods across the northeast United States. The models show a consistent modest cold bias each season and are wetter than observations in winter, spring, and summer. Agreement in spatial variability and pattern correlation is good for air …

Ultra-Stable Protein-Polymer Bioconjugates, Kyle S. Cole

Master's Theses

No abstract provided.

Calculation Of A Synthetic Gather Using The Aki-Richards Approximation To The Zoeppritz Equations, Graham Ganssle

University of New Orleans Theses and Dissertations

A synthetic seismic gather showing amplitude versus offset can be analyzed by the interpretive geophysicist to predict rock properties useful in oil exploration. Reflection coefficients derived from measured well log data are convolved with a Ricker wavelet to create a synthetic seismic trace. The Zoeppritz equations describe the propagation of an acoustic wave across an interface between two viscous media of different acoustic impedances with respect to increasing offset angle. The Aki-Richards linear approximation is used to create a synthetic seismic gather with offset angles up to fifty degrees. This gather is compared to a synthetic gather created using commercially …

Application Of Web Mashup Technology To Oyster Information Services, Christian Chuindja Ngniah

University of New Orleans Theses and Dissertations

Web mashup is a lightweight technology used to integrate data from remote sources without direct access to their databases. As a data consumer, a Web mashup application creates new contents by retrieving data through the Web application programming interface (API) provided by the external sources. As a data provider, the service program publishes its Web API and implements the specified functions.

In the project reported by this thesis, we have implemented two Web mashup applications to enhance the Web site oystersentinel.org: the Perkinsus marinus model and the Oil Spill model. Each model overlay geospatial data from a local database …

Geochemical Evidence For Vertical Migration Of Deep Formation Fluids Through The Baton Rouge -Denham Springs Fault System, Lesley C. Prochaska

University of New Orleans Theses and Dissertations

Accumulations of brackish groundwater exist across south Louisiana within the shallow, south-dipping Pleistocene to Upper Miocene Baton Rouge Aquifer System (BRAS). This research investigates the source of brackish groundwater through geochemical analysis of representative groundwater samples by comparing the following geochemical ratios along with other trace elements. Low Bromide (Br)/Chloride (Cl) and Potassium (K) /Cl ratios, high Sodium (Na) /Cl ratios, trace Magnesium (Mg) concentrations, and low Strontium (Sr) ⁸⁷/Sr⁸⁶ in brackish waters from the BRAS are inconsistent with in situ saline water from marine formation fluids of similar age. The ratios are consistent with in situ saline-water …

Nursing Females Are More Prone To Heat Stress: Demography Matters When Managing Flying-Foxes For Climate Change, Stephanie T. Snoyman, Jasmina Munich, Culum Brown

Ecological Impacts of Climate Change Collection

Determining the underlying mechanisms responsible for species-specific responses to climate change is important from a species management perspective. The grey-headed flying-fox, Pteropus poliocephalus, is listed as vulnerable but it also a significant pest species for orchardists and thereby presents an interesting management conundrum. Over the last century, the abundance of the grey-headed flying-fox, P. poliocephalus, in Australia has decreased due to a variety of threatening processes but has increased in abundance in urban areas. These flying-foxes are highly susceptible to extreme heat events which are predicted to increase in the future under climate change scenarios. Exceptionally hot days result in …

Energy Audits In Malta, Trustin Farrugia Cann

Masters Theses, 2010-2019

Energy is the driving force of our society. Industry, economy and the general public, all depend on safe, secure, sustainable and affordable energy. But at the same time, energy related emissions account for almost 80% of the European Union’s total green house gas emissions. The European Union has set itself a great challenge and a target was set in 2007 to reduce by 20% of its primary energy consumption, to increase the share of renewable energy by 20% and to reduce the green house gasses by 20% until 2020. Energy auditing is an effective energy management tool which identifies and …

Development Of A Best Practices Manual For The U.S. Department Of Energy's Wind For Schools Project, Jessica Coleman Fox

Masters Theses, 2010-2019

The Development of a Best Practices Manual for the U.S. Department of Energy’s Wind for Schools Project is an effort to provide the necessary research and data to make the completion of a Best Practices Manual possible. The Best Practices Manual will be used to help with the future development of Wind for Schools Projects nationally. The Wind for Schools Project was developed in 2005; currently 11 states are actively participating. As the Wind for Schools Project developed, various approaches and techniques were used to meet the goals of the program. A Best Practices Manual will serve as a repository …

Assessing The Feasibility Of Small Hydropower In Northern California, Andrea Peterson

Masters Theses, 2010-2019

Small hydropower is an underutilized form of clean energy generation. In order for any potential for small hydropower to be developed or utilized, the amount of potential power needs to be estimated accurately. A number of studies have been conducted, though none of these studies have taken local climate into account, which affects the accuracy of their results. A number of places in Northern California have potential that has not yet been utilized, but a more accurate assessment of that potential is called for. Although studies can be conducted through a number of different methodologies, most use GIS technology to …

Implementation Of Signal Conditioning Circuitry For Co2 Sensor For Monitoring Co2 Emissions From Coal Fired Power Plant In Neyveli Lignite Corporation (Tamil Nadu, India), Muruganand Prabhakaran

Masters Theses, 2010-2019

The most significant anthropogenic greenhouse gas causing global warming is carbon dioxide (CO2). Due to the increase of burning of fossil fuels by industries, the atmospheric CO2 concentration increased by more than 30% in 10 years and is expected to continue to increase. This dissertation analyses a sensor unit used to monitor the emission levels of carbon dioxide from the Neyveli Lignite Corporation (NLC) coal fired power plant which is located in the southern part of India. Most of India’s power generation sectors are based on coal fired power plants. The NLC power plant is owned by the central government …

Influence Of Tidal Cycles On Movements Of Atlantic Bottlenose Dolphins (Tursiops Truncatus) In South Carolina Coastal Environments, Lauren Albrittain

Honors Theses

When studying estuarine environments that are directly fed by the ocean tides, the impact of the changing tide is vital in studying the migration and travel behaviors of organisms within those environments. This study was aimed at determining the influence of the daily tidal currents on movement with or against the tides by Atlantic bottlenose dolphins (Tursiops truncatus). Data collection occurred from March to October 2012, at three study sites: the ACE River Basin National Wildlife Refuge, the Hilton Head estuary, and the Cape Romain National Wildlife Refuge. Photo identification transect surveys were conducted to observe resident Atlantic bottlenose dolphins …

Title Ix Compliance: A Comparison Of Division I Equality, Jacqueline Leake

Honors Theses

The passage of Title IX of the Education Amendments of 1972 has had a significant impact on college athletics. However, there is still a large disparity between opportunities offered for men and women. This study determined the true gender equality within Division I athletics. Inequalities were assessed in the areas of athletic participation, athletically related student aid, recruiting expenses, and total expenses. Data from these areas were gathered from the Equity in Athletics Disclosure Analysis Cutting Tool. Ratios and the difference between the ideal and current values were calculated for each category. Institutions were ranked in each category, as well …

Investigating Volatility Trends Of Silver Through An Analysis Of Stock Options Prices, Dylan Houston

Honors Theses

Volatility is a statistical measure that describes the amount of fluctuation in prices for a given investment; generally, the higher the volatility for an investment, the riskier it is perceived to be. Traders study volatility history so that they can make informed decisions on how to invest capital. The purpose of this article is to analyze implied volatility values, which are derived from the investment's price and are considered the market's estimate of the investment's actual volatility, for silver electronically traded fund (ETF) options in periods of both high and low price movement. In doing so, we desired to see …

Cost Effective Domination In Graphs, Tabitha Lynn Mccoy

Electronic Theses and Dissertations

A set S of vertices in a graph G = (V,E) is a dominating set if every vertex in V \ S is adjacent to at least one vertex in S. A vertex v in a dominating set S is said to be it cost effective if it is adjacent to at least as many vertices in V \ S as it is in S. A dominating set S is cost effective if every vertex in S is cost effective. The minimum cardinality of a cost effective dominating set of G is the cost …

Connotational Subtyping And Runtime Class Mutability In Ruby, Ian S. Dillon

Electronic Theses and Dissertations

Connotational subtyping is an approach to typing that allows an object's type to change dynamically, following changes to the object's internal state. This allows for a more precise representation of a problem domain with logical objects that have variable behavior. Two approaches to supporting connotational subtyping in the Ruby programming language were implemented: a language-level implementation using pure Ruby and a modification to the Ruby 1.8.7 interpreter. While neither implementation was wholly successful the language level implementation created complications with reflective language features like self and super and, while Ruby 1.8.7 has been obsoleted by Ruby 1.9 (YARV), the results …

Open Source Remote Sensing:Introspect And Prospect, Sanggoo Kang, Hee Young Yoo, Kiwon Lee

Journal of Marine Science and Technology

It is noteworthy that open source applications have been developed and studied in various fields as well as remote sensing field. Open sources for GIS have long history related to open standards over three decades, but those of remote sensing do relatively short. Moreover, there are still no summary reports for open sources for remote sensing. In this study, we summarized characteristics of open source applications for remotely sensed image processing and discussed their strengths and weaknesses at first. Based on the summary, two open source applications for InSAR Processing and Geographic Object-Based Image Analysis are practically implemented to introspect …

Quantataive Analysis Of Relationship Between Alos Palsar Backscatter And Forest Stand Volume, Choen Kim

Journal of Marine Science and Technology

To estimate forest stand volume, topographic effects should be considered in Synthetic Aperture Radar (SAR) data processing, because most forests are located on mountainous areas in Korea. This paper shows how the effects on the ALOS Phased-Array L-Band SAR (PALSAR) backscatter in Kwangneung Experiment Forest can be reduced by gammanought γ 0 . Regardless of coniferous and deciduous forests, the gammanought γ 0 values are always lower compared to the sigmanought σ0 values at HH and HV polarization for 58 standwise tree volume of the fore-slope (here, the west-facing slope) and are always higher in case of far-slope (here, east-facing …

Seasonal Prediction Of Climate Extremes For The Pacific: Tropical Cyclones And Extreme Ocean Temperatures, Yuriy Kuleshov, Claire Spillman, Yan Wang, Andrew Charles, Roald De Wit, Kay Shelton, David Jones, Harry Hendon, Catherine Ganter, Andrew Watkins, Jemishabye Apajee, Aurel Griesser

Journal of Marine Science and Technology

Climate change and climate extremes have a major impact on Australia and Pacific Island countries. Of particular concern are tropical cyclones and extreme ocean temperatures. As a practical response to climate change, through the Pacific Australia Climate Change Science and Adaptation planning Program (PACCSAP), enhanced web-based information tools to provide seasonal forecasts for climatic extremes in the Western Pacific have been developed. Using the dynamical seasonal prediction model POAMA (Predictive Ocean Atmosphere Model for Australia), we aim to improve accuracy of seasonal forecasts of tropical cyclone activity and extreme sea surface temperatures for the Western Pacific. Since the PACCSAP has …

Sulfur Dioxide Trends In Malta: A Statistical Computing Approach, Nicholas Desira

Masters Theses, 2010-2019

A statistical investigation of data related to emissions and measurement of SO2 in the Maltese islands encompassing the period 2004 to 2012 was conducted. The purpose was to investigate whether SO2 levels were driven by the Marsa power station (MPS), which was considered to be the main source of SO2 on the island. In addition, the study sought to establish spatial and temporal trends in the SO2 concentrations measured throughout the islands. Data was obtained from the Malta Environment and Planning Authority (4 fixed monitoring stations and a diffusion tube network) and also from the Enemalta Corporation (emissions of MPS). …

Synthesis And Characterization Of Metallocorrole And Metalloporphyrin Complexes For Catalytic Oxidations, Zhibo Yuan

Mahurin Honors College Capstone Experience/Thesis Projects

Macrocyclic ligand-complexed transition metal-oxo intermediates are the active oxidizing species in a variety of important biological and catalytic oxidation reactions. Many transition metal catalysts have been designed to mimic the predominant oxidation catalysts in nature, namely the cytochrome P450 enzymes. Metal porphyrin complexes have been the center of research as catalysts in this context. This study focuses on the synthesis of porphyrin and corrole macrocyclic ligands and the corresponding ruthenium and iron complexes which are fully characterized by UV-vis and NMR spectroscopies.

The catalytic oxidation reactions towards organic sulfides by these metal complexes were also studied. Two ruthenium porphyrin complexes …

Synthesis And Characterization Of Complexes Of [Rh2(Nphcoch3)4] And Nitriles., Jennie Tan

Undergraduate Honors Theses

The rhodium carboxamide [Rh2(NPhCOCH3)4]L (L=axial ligand), has applications as a catalyst for carbenoid transformations. To explore the nature of the rhodium-carbene bond, studies between Rh2(NPhCOCH3)4 and nitriles were proposed. Trials of the benzonitrile, o-tolunitrile, and m-tolunitrile have been performed and characterized on the 2,2-trans [Rh2(NPhCOCH3)4] complex via NMR spectroscopy, IR spectroscopy, and X-ray crystallography.

Blow-Up Of Solutions To The Generalized Inviscid Proudman-Johnson Equation, Alejandro Sarria

University of New Orleans Theses and Dissertations

The generalized inviscid Proudman-Johnson equation serves as a model for n-dimensional incompressible Euler flow, gas dynamics, high-frequency waves in shallow waters, and orientation of waves in a massive director field of a nematic liquid crystal. Furthermore, the equation also serves as a tool for studying the role that the natural fluid processes of convection and stretching play in the formation of spontaneous singularities, or of their absence.

In this work, we study blow-up, and blow-up properties, in solutions to the generalized, inviscid Proudman-Johnson equation endowed with periodic or Dirichlet boundary conditions. More particularly,regularity of solutions in an Lp setting will …

Interferometric Synthetic Aperture Sonar Signal Processing For Autonomous Underwater Vehicles Operating Shallow Water, Patricia E. Giardina

University of New Orleans Theses and Dissertations

The goal of the research was to develop best practices for image signal processing method for InSAS systems for bathymetric height determination. Improvements over existing techniques comes from the fusion of Chirp-Scaling a phase preserving beamforming techniques to form a SAS image, an interferometric Vernier method to unwrap the phase; and confirming the direction of arrival with the MUltiple SIgnal Channel (MUSIC) estimation technique. The fusion of Chirp-Scaling, Vernier, and MUSIC lead to the stability in the bathymetric height measurement, and improvements in resolution. This method is computationally faster, and used less memory then existing techniques.

Geomorphologic Evolution Of A Rapidly Deteriorating Barrier Island System With Multiple Sediment Sources: Eastern Isles Dernieres, Louisiana, 1887 To 2006, Benjamin T. Kirkland

University of New Orleans Theses and Dissertations

Trinity, East, and Wine Islands make up the eastern half of the Isles Dernieres barrier arc in south-central Louisiana. Formed following the abandonment of the Lafourche delta complex, subsidence and storm erosion have led to rapid deterioration of the system. Since 1887, the land area of the islands has decreased seventy-seven percent, and the gulf shoreline has retreated landward more than a kilometer. Wave ravinement on the shoreface of the islands is responsible for the most sediment loss; liberated sediment travels longshore to tidal inlets. The dominant ebb tidal currents then transport the sediment to where it is deposited in …

Methodology And Automated Metadata Extraction From Multiple Volume Shadow Copies, Henri Michael Van Goethem

Masters Theses, 2010-2019

Modern day digital forensics investigations rely on timelines as a principal method for normalizing and chronologically categorizing artifacts recovered from computer systems. Timelines provide investigators with a chronological representation of digital evidence so they can depict altered and unaltered digital forensics data in-context to drive conclusions about system events and/or user activities. While investigators rely on many system artifacts such as file system time/date stamps, operating system artifacts, program artifacts, logs, and/or registry artifacts as input for deriving chronological representations, using only the available or most recent version of the artifacts may provide a limited picture of historical changes on …