Digital Commons Network^™

Spatial And Temporal Variability Of Particulate And Chromophoric Dissolved Organic Matter Absorption In The Northern Gulf Of Mexico, Ashley Ann Lojek

Master's Theses

Coastal regions influenced by large freshwater inputs exhibit large variability in absorption and associated optical properties. Therefore, understanding coastal ecosystem processes requires intensive, ongoing sampling. Analysis of the Mississippi and Atchafalaya River plumes took place on board the RIV Pelican on two separate cruises. MagMix-1 occurred from May 1 to May 8, 2008 and corresponded to the highest discharge periods for both rivers for 2008; MagMix-11 took place October 31 to November 6, 2008 and corresponded to the lowest discharge periods for both rivers for 2008. Samples were collected along four transects in the northern Gulf of Mexico and were …

Profession Of Faith: Congressional Websites And Religious Expression In The 112th Congress, Molly Jaye Mcguffee

Master's Theses

The idea of culture wars in politics suggests that American voters have polarized according to their positions on moral issues, and a religious gap in the electorate also contends that voters are polarized on these issues according to their religious beliefs and practices. Research shows that members of Congress send cues about their faith to their constituents, who in turn use the information to assess their representatives and determine their members' position on these moral issues. To determine how these cues are delivered and who delivers the information, I combed 100 Senators' and 435 Representatives' from the 1121 h Congress …

Marginalization Of Mothers In The Market: A Comparative Study Of The Limits And Opportunities For Public Policy, Jennifer Mary Crosslin

Master's Theses

Despite significant gains of women living in advanced democracies over the last several decades, sex inequality in the market still exists. Women still earn less, work less, and are less likely to be found in top leadership positions in the market, especially mothers, but disparity between men and women in terms of these outcomes varies among many countries. This study explores the relationship between government policies and the market outcomes of women in the United States and other European nations to determine if the different policies explain the variances, and consequently the necessity of state intervention for achieving gender equality. …

Carbon And Nitrogen Dynamics In High Intensity Minimal Exchange Shrimp (Litopenaeus Vannamei) Raceways, John Henry Francis

Master's Theses

Three separate shrimp (litopenaeus vannamei) growouts were examined at The University of Southern Mississippi's Thad Cochran Marine Aquaculture Center. The objectives of this project were to (1) determine if there was a significant difference in any water quality parameters between the 2 density treatments, (2) construct carbon and nitrogen budgets to see where the carbon and nitrogen went in the system for all growouts, (3) determine if plastic media had any effects on water quality parameters and shrimp production, (4) determine if plastic media allowed for a nitrifying bacteria population to establish more rapidly, (5) determine if the …

Identifying And Characterizing Non-Coding Rnas In The Dinoflagellate Karenia Brevis, Helen Namataka

Master's Theses

When algal cells proliferate and accumulate in marine and fresh water systems, they form algal blo'oms. The majority of these blooms are beneficial, but a significant number are detrimental and are known as harmful algal blooms (HABs). A number of negative effects, including closing of recreational beaches and economic loss, are observed during HABs. Predictably, the longer a bloom persists, the greater its effects on human, environmental and economic health. Karenia brevis, a mixotrophic dinoflagellate, forms HABs, and blooms caused by this organism have been known to remain several months after formation. For these reasons, research has been conducted to …

The Effects Of Dro And Dra For Increasing Academic Engagement And Decreasing Disruptive Behavior Of Elementary Students In General Education Classrooms, Jonna Lea Halphen

Master's Theses

The research literature suggests that functional assessment and differential reinforcement methods are effective for decreasing an array of problem behaviors. However, research is limited in the number of studies including children of typical development exhibiting common problem behaviors (e.g., inappropriate vocalization, off-task behavior) in a general education setting. In addition, previous studies have failed to report data regarding increases in appropriate replacement behaviors. The purpose of the present study was to examine the relative effectiveness of differential reinforcement of other behavior (DRO) and differential reinforcement on alternative behavior (DRA) for decreasing problem behavior and increasing academically engaged behavior with elementary-age …

Factors Influencing The Spatial And Temporal Distrubtion Of Primary Productivity And Community Respiration In The Mississippi Coastal Estuarine Region, Ryan Anthony Vandermeulen

Master's Theses

This study describes the spatial and temporal distribution of net primary productivity (NetPP) and respiration (RESP) in relation to the biogeochemical, optical, and hydrographic variability in the Mississippi Sound and Mississippi Bight over the course of one year. Surface in-situ measurements of NetPP and RESP were regularly determined at two stations by a time-course detection of dissolved oxygen (DO) using novel optode technology. In addition, various biogeochemical, optical, and hydrographic parameters were examined over 14 stations throughout the estuary over a year, using ground and satellite (MODIS Aqua) measurements. In this study, consistently low dissolved inorganic N:P ratios (average N:P …

Perceptions And Realities Of The Irish Republican Army During The Second World War, L.B. Wilson Iii

Master's Theses

This thesis investigates the British and German perception of the IRA and claims that the organization represented an insurmountable obstacle to the progress of both German intelligence and British counter-intelligence. The IRA was also the primary contributor to the political troubles oflrish neutrality during World War II. It examines the perceived threat of the IRA in the minds of the Irish Prime Minister Eamon de Valera and British Prime Minister Winston Churchill and those ministers' respective governments. The thesis looks at official debates in the British Parliament and the Irish Dail as well as interwar newspapers and official records. Additionally, …

A Place Like Home, Tabitha Denae Epperson

Master's Theses

On August 29, 2005, Hurricane Katrina changed many things. This storm destroyed buildings, businesses, places of worship, and homes. People lost their lives, possessions, way of life, and for those that survived, their lives now were measured in two eras - pre and post Katrina. Because this natural disaster turned their lives upside down, both in large and small ways, their lives would never be the same. This thesis . documents stories of those that for various reasons chose to stay on the Mississippi Gulf Coast after Katrina. Twenty-five interviews of residents of Pass Christian explore what exactly is a …

Improved Numerical Quadrature Over General Two-Dimensional Domains Utilizing Curvature Based Domain Decomposition, Eva Lynn Comino

Master's Theses

Herein we improve upon QUAD2D, an algorithm for numerical quadrature on a general two-dimensional domain presented by James Lambers. QUAD2D eliminates the error of approximation inherent in general polygonal methods due to the variance between an estimated polygon boundary and the domain boundary. The QUAD2D method achieves quadrature accurate to within machine precision for sufficiently smooth integrands, but has two weaknesses which are addressed in our proposed curvature based algorithm. The first weakness is that the boundary node location method utilizes a one-dimensional change of variable, causing it to be dependent on domain orientation. The second is that the domain …

Fungal Biofilm Colonization And Succession On Artificial Reefs In The North-Central Gulf Of Mexico, Amy Leigh Salamone

Master's Theses

This study represents the first characterization of natural mixed-species fungal biofilm communities on artificial reefs in the marine environment. Previous fungal biofilm studies have failed to observe the naturally-occurring biodiversity in coastal areas, which comprise the most utilized zone of the marine environment. Artificial reefs can increase fishing yields, amplify oyster habitats, contribute to shoreline stabilization, promote good water quality, and deter pollution. Proper management practices of artificial reefs require knowledge of the colonization of these new habitats by marine organisms and their subsequent succession. Fungi, along with bacteria, archaea, protists, algae, and diatoms, quickly form a complex biofilm on …

The Effects Of Check-In/Check-Out And Check-In/Check-Out In Combination With Social Skills Training For Students Who Exhibit Disruptive Classroom Behavior, Aimee Maldonado

Master's Theses

The purpose was to investigate the additive effects of Social Skills Training (SST) to Check-in/Check-out (CICO) on academic engagement of students. Participants were 3 elementary students who exhibited disruptive behavior who were nominated by teachers. The two dependent variables were the level of Appropriately Engaged Behavior (AEB) of the student as well as the student's behavior ratings indicated by teacher responses on the Daily Behavior Report Card (DBRC) with and without SST. A noncurrent multiple baseline across students design was used to examine both dependent variables. Goldstein and McGinnis' program, Skillstreaming the Elementary School Child, was used during SST. The …

Life History Of The Southern Kingfish, Menticirrhus Americanus, From The North-Central Gulf Of Mexico, Samuel Dee Clardy

Master's Theses

Southern kingfish, Menticirrhus americanus, is a common sciaenid along the north-central Gulf of Mexico (GOM), but annual harvest has declined over the last decade. Little is known about the life history of southern kingfish in the north-central GOM, and thus the objectives of this study are to establish the spawning season, spawning frequency, fecundity, sex ratio, female size at 50% maturity, age, and standard morphometrics. Specimens were collected using hook and line in several locations within the Mississippi Sound. A total of 519 southern kingfish (434 females, 85 males) were captured from April 2008 through May 2009 by hook …

"We Need The Storm, The Whirlwind, The Earthquake": The Intersection Of Language And Violence In Nat Turner's "Confessions" And Frederick Douglass's My Bondage And My Freedom, Allison L. Tharp

Master's Theses

Resistance literature is an established genre, dating back to the late eighteenth century, but it underwent a rhetorical revision as slavery increased within the United States in the years leading up to the Civil War. As slaves and free blacks began to rebel against their oppressed condition, they "stole" two prominent tools whites used_ to - oppress slaves: language and violence. Frederick Douglass's My Bondage and My Freedom is a self-conscious revision within resistance literature that argues for national change by advocating physical violence with written language. Reading this text as an intertext with Nat Turner's "Confessions" reveals the ways …

Producing Data To Support The Detection And Understanding Of Early On-Set Corrosion In Accelerated Weathering, Stephanie Suzanne Messer

Master's Theses

The goal of the research reported herein was to generate data towards the development of methods and protocols for detecting, quantifying, and understanding early on-set corrosion events on and above aluminum 2024-T3. The studies focused on incorporating two main fluorescent probes into a few model epoxy and/or urethane coatings to detect X and Y axis specific pH changes occurring upon and above the substrate during pre-macroscopic corrosion. The primary fluorophore used was fluorescein, a pH sensitive probe capable of detecting the changes, mainly increases in pH that accompanies aluminum corrosion. The second molecular probe, rhodamine B, was utilized to better …

Immunostimulatory And Cellular Toxic Effects Of Single-Stranded Rna On Cancer Cells, Chengwen Teng

Master's Theses

Whether 5'-triphosphate-single-stranded-RNA (5 '-ppp-ssRNA) is immunostimulatory was controversial in the literature. In order to clarify the immunostimulatory effect of 5'-ppp-ssRNA, we synthesized ssRNAs and tested the IFNp (interferon-beta) level and cellular toxicity of ssRNAs in SKOV3 cells. In this work, we confirmed that 5'-ppp-ssRNA (~ 60nt) was immunostimulatory and toxic in SKOV3 cells. 5'-ppp-ssRNA (~ 60nt) led to IFN-P induction and apoptosis in SKOV3 cells. Longer 5' ppp- ssRNA tended to have a higher immunostimulatory effect and cellular toxicity than shorter 5'-ppp-ssRNA. 5'-ppp-ssRNA was more immunostimulatory and toxic than 5'- 0H-ssRNA. If the incubation time of ssRNAs increased, the toxicity …

Effects Of Hurricane Disturbance On The Stopover Ecology Of Intercontinental Landbird Migrants In Coastal Louisiana, Emily Johanna Lain

Master's Theses

Few studies have considered the impact of weather events on migratory birds during stopover, and essentially none on how hurricanes affect their stopover biology during spring passage. About two thirds of eastern North American forest breeding bird species migrate twice annually between temperate breeding areas and subtropical and tropical wintering grounds, and movement in relation to the Gulf of Mexico (GOM) is a conspicuous and important part of that migration system. During inclement weather or winds inconsistent with travel direction, migratory birds oft.en/a/lout and concentrate by the thousands in forest patches that occur along the northern coast of the GOM. …

The Effect Of Poss Modified Montmorillonite On Elastomer Nanocomposites, Elana Celeste Lewis

Master's Theses

The goal of this thesis was to define the structural factors that determine performance in clay/rubber nanocomposites when polyhedral oligomeric silsesquioxane (POSS) is used as a dispersant. POSS has been shown previously to enhance clay, metal oxides, and carbon nanotube dispersion in thermoplastics matrices, but their performance in rubber systems has not yet been explored. There is little fundamental understanding of how POSS interacts with clay and how these modified fillers react with rubber matrices. This thesis aims to develop a greater understanding of the mechanisms of POSS-clay modification through the examination of two different POSS-clay systems and their effect …

The Relationship Between Parent Nutrition Knowledge Level And Child Weight Status, Jameshyia Shandria Ballard

Master's Theses

The purpose of this study was to determine if nutrition knowledge of parents was related to the weight status of preschool-aged children. Objectives of this study included determining if relationships existed between parent knowledge of the 2010 Dietary Guidelines and child weight status, between parent knowledge of serving sizes and child weight status, and between overall parent nutrition knowledge and child weight status.

Data were obtained from 101 parents enrolled in a Head Start program in southern Mississippi. Weight status was obtained from 101 three to five year old children. Parent data was collected via survey, developed by the principal …

Designing And Developing An Alternative Implementation Of The Digital Bathymetric Database, Variable Resolution (Dbdb-V), Donald Lester Brandon Jr.

Master's Theses

This documentation describes a project to design and develop an alternative implementation of the Digital Bathymetric Database Variable Resolution (DBDB-V) that will allow efficient ingestion into Geospatial Information System (GIS). DBDB-V is a well-known storage facility for wide-reaching bathymetry. It is created, maintained, and extensively used by the U.S. Navy, and it is seen in many applications within the public sector. Environmental Systems Research Institute (ESRI) develops a popular suite of GIS applications called ArcGIS Desktop that is used worldwide and offered to U.S. Navy programs though the Commercial Joint Mapping Toolkit (CJMTK). …

Zifazah: A Scientific Visualization Language For Tensor Field Visualizations, Haipeng Cai

Master's Theses

This thesis presents the design and prototype implementation of a scientific visualization language called Zifazah for composing and exploring 3D visualizations of diffusion tensor magnetic resonance imaging (DT-MRI or DTI) data. Unlike existing tools allowing flexible customization of data visualizations that are programmer-oriented, Zifazah focuses on domain scientists as end users in order to enable them to freely compose visualizations of their scientific data set. Verbal descriptions of end users about how they would build and explore DTI visualizations are analyzed to collect syntax, semantics, and control structures of the language. Zifazah makes use of the initial set of lexical …

Christianity, The Duty To Assist Others, And Supererogation, Billy Max Condrey Jr.

Master's Theses

In 1958, J.O. Urmson's landmark article "Saints and Heroes" was the first in the history of philosophy to treat supererogation in a systematic manner. Arguing that the traditional threefold classification system consisting of duties, permissible acts, and wrong acts was insufficient, he went on to propose a fourth category of moral actions that while morally praiseworthy, are not obligatory. This in turn opened the door to a host of other philosophers to write on supererogation over the past few decades. In light of this, Christian ethicists must ask the question, "Are supererogatory actions possible in Christian ethics?" This …

Phase Speciation Of Carbohydrates And Dioxins In Rivers And Coastal Waters In The Northern Gulf Of Mexico, Kusumica Mitra

Master's Theses

Dissolved carbohydrates (d-CHO), including monosaccharide (MCHO) and polysaccharides (PCHO), and particulate carbohydrates (p-CHO) are major components of natural organic matter and play an important role in biogeochemical cycles of carbon and other trace elements in marine environments. This study aimed to examine the abundance and partitioning of CHO between dissolved and particulate phases and their seasonal variations in the Mississippi Sound/Bight and Lake Pontchartrain. Laboratory mixing experiments were also carried out to examine the behaviour of CHO species along a salinity gradient. The phase partitioning of dioxin among three different phases, i.e., colloidal organic matter, particulate organic matter and sediments, …

Improved Detection Methods For Selected Vibrio Species In The Marine Aquatic Environment, Kimberly Jordan Griffitt

Master's Theses

Vibrio vulnificus, Vibrio cholerae, and Vibrio parahaemolyticus are the three most commonly encountered human pathogens in the Vibrio genus. They are frequent agents of foodborne illness contracted from seafood. The work presented here focuses on three aspects of detection of these bacteria. First is a novel agar formulation designed to isolate and directly enumerate V. vulnificus from oyster tissue by using x-gal, a chromogenic analog to lactose, as a carbon source and agent of differential morphological colony growth. Second is a field study on the relative abundance of the three main pathogenic Vibrios following the opening of the …

Bacterioplankton Production In The Western Mississippi Sound And The Role Of Photosynthetic Extracellular Release As A Driver Of Bacterial Production, Amy Michele Glover

Master's Theses

Bacterioplankton growth and metabolic activities are a vital component in structuring marine and estuarine ecosystems. In this study, bacterial production (BP) was investigated at two separate stations in the western Mississippi Sound (MS). One was an inshore site outside of the Bay of St. Louis and the other site was located in the transition zone (offshore) between the MS and Mississippi Bight, just south of Cat Island. Bacterial production (BP) was analyzed using the addition of ¹⁴C leucine to natural water samples. In addition, samples were augmented with algal exudates in order to investigate BP based on uptake of …

Anode Material Testing For Marine Sediment Microbial Fuel Cells, Andrew John Quaid

Master's Theses

Research on the power production of the microbial fuel cell has increased in the past decade. The sediment microbial fuel cell is a type of fuel cell that uses the environment of submerged sediments to provide a natural voltage difference. The fuel cell is comprised of an anode buried in the sediment and a cathode that is held in the overlying water column. The process of electron transfer to the anode is catalyzed by anaerobic bacteria in the sediment. The anaerobic bacteria have that are able to catalyze the electron transfer have been termed exoelectrogenic. The increase in scientific research …

Photo-Poetics: Photographic Narratives In The New Journalism, John David Hosemann Jr.

Master's Theses

Americans today have come to remember the unrest of the 1960s through the many shocking photographic images that emerged during that time. Images of assassinations, war, murders, and social upheaval have come to characterize this decade as particularly (perhaps perversely) photogenic. Further, these images have revealed the photographic medium as uniquely suited for confirming a violent reality that, at the time, seemed incomprehensible to an increasingly disillusioned public. In this discussion I seek to develop an understanding of photography as a theoretical process that can illuminate how we represent violent subject matter. In doing so, I apply these concepts to …

Opportunistic Random Media Access In Wlans, Chong Tang

Master's Theses

This thesis proposes a new medium access protocol for IEEE 802.11 wireless local area networks, which is called opp01tunistic medium access. The protocol changes the media access opportunities of nodes by adjusting the contention window dynamically according to the different bit rates. Thereby, the protocol can reduce collision and improve throughput significantly. The n·aditional IEEE 802.11 standards access channel with binary exponential back-off algorithm and all nodes choose the back-off interval from the same initial range. The new protocol in this thesis divides nodes as well as contention windows in proportion to data rate. It offers three methods to group …

Single Liquid-Liquid Extraction Of Delta-9-Tetrahydrocannabinol And 11-Nor-Carboxy-Delta-9-Tetrahydrocannabinol At An Acidic Ph, Meghan Ann Tanner

Master's Theses

Because of the high occurrence of marijuana usage in the workplace and in driving under the influence cases, it is important to test for both delta-9-THC and delta-9-THCA in order to determine current and recent usage. The laboratory preparation and analysis of delta-9-THC and delta-9-THCA in urine should be as cost and time efficient as possible. Current extraction of delta-9-THC and delta-9-THCA from urine requires two separate techniques for each. Because delta-9-THC is nonacidic, while delta-9-THCA is acidic, the extractions involve two separate pH levels, while GC/MS analysis requires two separate methods. This separation requires a great deal of time …

German Pows, Biopolitics, & The Piney Woods: Using Foucault To Analyze Resistance At Camp Shelby's Pow Camp During World War Ii, Patricia Lynn Miller-Beech

Master's Theses

Few people realize that during World War II, Camp Shelby in south Mississippi was a detention site for German prisoners of war (POWs) where the United States government engaged in reeducation efforts to de-Nazify soldiers in order to create a democratic Germany after the war. The U.S. War Department hoped the success of this program would create allies and prevent another war in the future. Despite the reeducation program being in all POW camps in the U. S., Camp Shelby was distinctive due to the racial politics of Mississippi during the height of the Jim Crow era. It is also …