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2010

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Factors Influencing Macroinvertebrate Diversity And Community Composition In Riverine Freshwater Rock Pools, Chtaura Jackson Dec 2010

Factors Influencing Macroinvertebrate Diversity And Community Composition In Riverine Freshwater Rock Pools, Chtaura Jackson

Theses and Dissertations

I examined a system of 378-riverine rock pools situated along the James River in Richmond, Virginia, to uncover the factors influencing their macroinvertebrate diversity and community composition. I characterized (total = 60) the physical characteristics, water quality, hydrology, and community assemblages in July 2009 for a subset of pools. I examined whether selected environmental factors (pH, nearest neighbor distance, depth, surface area and inundation height) were related to macroinvertebrate diversity and community composition. Species richness and total abundance of all taxa increased with pool pH and surface area. Ordination indicates that nearest neighbor distance (NND) and pH varied significantly among …

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An Evaluation Of Cardiorespiratory Responses And Ventilatory Efficiency During Treadmill And Cycling Exercise In Overweight Adolescents, Amanda Scheps Dec 2010

An Evaluation Of Cardiorespiratory Responses And Ventilatory Efficiency During Treadmill And Cycling Exercise In Overweight Adolescents, Amanda Scheps

Theses and Dissertations

The assessment of ventilatory efficiency (VE/VCO2 slope) is increasingly being utilized to complement traditional cardiorespiratory fitness testing during graded exercise. The purpose of this study was to compare cardiorespiratory responses and ventilatory efficiency in obese children during a progressive exercise test to volitional fatigue performed on a treadmill and a cycle ergometer. Fifteen obese male (N=3) and female (N=12) adolescents aged 10 to 18 years were recruited in the study and completed both the treadmill and cycle ergometer trials. Mean age and BMI of the sample was 13.3 years and 38.0 kg/m2, respectively. Maximal oxygen consumption (VO2max) and ventilatory efficiency …

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The Effect Of Exogenous Fructose On Creeping Bentgrass Heat Tolerance, William Brett Long Dec 2010

The Effect Of Exogenous Fructose On Creeping Bentgrass Heat Tolerance, William Brett Long

Theses and Dissertations

Creeping bentgrass (Agrostis stolonifera) used on golf course putting greens are some of the most intensively managed areas of turf and are subjected to high stress. Heat stress results in lowered photosynthetic efficiency and inadequate sugar production. An exogenous application of fructose could compensate for the lack of sugar being produced. The objectives of this research were to determine the effect of exogenous applications of fructose on heat stressed creeping bentgrass. Field results showed some phytotoxicity with high rates of fructose, while lower rates showed no visible damage compared to an untreated control. Low rates of surfactant resulted in little …

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The Impact Of Accelerated Reader (Ar) Program On Students' Mct Reading Scores, Kenyartic Lewon Brown Dec 2010

The Impact Of Accelerated Reader (Ar) Program On Students' Mct Reading Scores, Kenyartic Lewon Brown

Theses and Dissertations

This study was needed to determine if the Accelerated Reader (AR) program made a positive impact in schools, which were attempting to increase student achievement in reading. The purpose of this study was to determine if students who received reading instruction supplemented with the AR Program achieved higher reading scores as measured by the Mississippi Curriculum Test (MCT) than students who were instructed using only traditional basal reader textbooks. 6 school districts were selected to participate in this study. There were 1,111 3rd — 5th grade students in the 6 districts between the years 2004 and 2007. Of those 1,111 …

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The Use Of General Land Office Records And Geographical Information Systems For Restoration Of Native Prairie Patches In The Jackson Prairie Region In Mississippi, Michael Tobit Gray Dec 2010

The Use Of General Land Office Records And Geographical Information Systems For Restoration Of Native Prairie Patches In The Jackson Prairie Region In Mississippi, Michael Tobit Gray

Theses and Dissertations

The Jackson Prairie Region represents a rare, poorly understood and threatened ecosystem. A review of the literature concerning the ecology, physiography and geology of the Region was undertaken, along with a search of General Land Office (GLO) records for locations of historic prairie patches. The prairie patch location data was transcribed, digitized and inserted as a base map in a Geographical Information System (GIS). A set of current, local conditions indicating suitability for conservation or restoration, along with importance weights for each condition, was derived from stakeholder input. A simple additive weighting technique was used to rank the locations in …

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Utilization Of Extracted Hardwood Flakes For Manufacturing Oriented Strand Lumber, Thomas Eric Mcconnell Dec 2010

Utilization Of Extracted Hardwood Flakes For Manufacturing Oriented Strand Lumber, Thomas Eric Mcconnell

Theses and Dissertations

Lignocellulosic ethanol production currently uses expensive and harsh methods to extract wood sugars from small-diameter hardwood trees that otherwise would have little or no marketability. A byproduct that adds no value to the conversion process results, thus alternative methods are needed to make this fuel source cost-effective. This dissertation proposes only partially hydrolyzing southern hardwoods, extracting some polysaccharides for ethanol fermentation while leaving behind a modified wood material which could be used as furnish for manufacturing strand-based wood composites. Three treating solutions, 1% sulfuric acid, water, and 1% sodium hydroxide, along with untreated controls, were utilized in a partial hydrolysis …

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Spatio-Temporal Characteristics Of Mississippi Wildfires, Saranee Dutta Dec 2010

Spatio-Temporal Characteristics Of Mississippi Wildfires, Saranee Dutta

Theses and Dissertations

Based on wildfire data acquired from Mississippi forestry commission from 1991- 2005 approximately 4,000 wildfires occur in Mississippi each year, burning over 60,000 acres of forest and grassland. This study focuses on Mississippi’s wildfires from 1991- 2005 for the summer/fall period defined for this study as the May-November fire season. Statistical analysis indicates that there is significant correlation between vegetation indices derived from remotely sensed data and wildfire size at various time lag periods. Forest areas are correlated with vegetation indices at longer lag periods, nonorested areas are correlated at shorter lag periods. The inverse correlation between wildfire size and …

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Social Enterprise: An Overlooked Approach To Addressing Economic Marginalisation, Gerard Doyle Dec 2010

Social Enterprise: An Overlooked Approach To Addressing Economic Marginalisation, Gerard Doyle

Articles

No abstract provided.

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Alabama Community College Presidents' Perceptions Regarding Distance Education, Janina Lakeshea Nobles Dec 2010

Alabama Community College Presidents' Perceptions Regarding Distance Education, Janina Lakeshea Nobles

Theses and Dissertations

The purpose of this study was to examine Alabama community college presidents’ perceptions regarding distance education. Further, this study was intended to determine the adequacy of the training opportunities and support for faculty that teach distance education courses and what services are available for distance education students. This study was designed to investigate distance education in the Alabama Community College System and to provide information in an effort to create a comprehensive plan to maximize access to online learning for students within the system. A survey was given to a total of 26 Alabama 2-year college presidents (22 comprehensive community …

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Assessment Of Body Armor Design On Physical Performance During Simulated Law Enforcement Activities, David Rashad Close Dec 2010

Assessment Of Body Armor Design On Physical Performance During Simulated Law Enforcement Activities, David Rashad Close

Theses and Dissertations

The objective of this research was to evaluate the impact of current body armor design on physical performance during simulated law enforcement activities. Twenty participants completed three trials of 13 individual activities representative of routine law enforcement activities. Three body armor configurations were evaluated: baseline (i.e., no armor), concealable body armor, and external body armor. Dependent variables included task completion time, heart rate, and center of pressure (COP). Repeated measures ANOVAs were used to test the dependant variables, with Tukey’s HSD post hoc tests used where appropriate. Results showed that the vertical and horizontal components of COP were affected by …

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Understanding Of Digital Copyright Issues Among Business Career And Technical Educators In Mississippi, Jean Alice Walke Mcdavid Dec 2010

Understanding Of Digital Copyright Issues Among Business Career And Technical Educators In Mississippi, Jean Alice Walke Mcdavid

Theses and Dissertations

This study investigated the understanding of digital copyright issues among business career and technical educators in Mississippi. The areas considered were knowledge; perceptions of knowledge; areas of copyright knowledge including computers and software, the Internet, video, and multimedia; and demographics of teaching level, gender, participation in professional development activities, and teaching experience. Participants included 75 Mississippi business career and technical educators at both the secondary and postsecondary levels. The knowledge level of participants was judged to be low; only four participants reached the established competency level of 70%. Their self-rated perception level was higher than their knowledge level, with the …

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Economic Impact Of On-Board Module-Building Cotton Harvesters On Replacement Schedule And Harvest Costs, Matthew Alan Farrell Dec 2010

Economic Impact Of On-Board Module-Building Cotton Harvesters On Replacement Schedule And Harvest Costs, Matthew Alan Farrell

Theses and Dissertations

The purpose of this study is to further understand the economic impact of the new on-board module-building cotton harvesters that both John Deere and Case IH have introduced to the market. This study will examine two different areas, the optimal asset replacement schedule and a machine’s performance rate’s effect on harvest costs due to rainfall loss. Using data collected from Willcut (2008), USDA crop progress reports, and a USDA weather station, models will be used to study the areas in question. The findings are that, the age of the associated assets begin replaced with the conventional harvester and the number …

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A Concept Mapping Case Domain Modeling Approach For Digital Forensic Investigations, April L. Tanner Dec 2010

A Concept Mapping Case Domain Modeling Approach For Digital Forensic Investigations, April L. Tanner

Theses and Dissertations

Over the decades, computer forensics has expanded from primarily examining computer evidence found on hard drives into the examination of digital devices with increasing storage capacity, to the identification of crimes and illegal activities involving the use of computers, to addressing standards and practices deficiencies, and to addressing the need to educate and train law enforcement, computer forensic technicians, and investigators. This dissertation presents the concept mapping case domain modeling approach to aid examiners/investigators in searching and identifying digital evidence and analyzing the case domain during the examination and analysis phase of the computer forensic investigation. The examination and analysis …

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Decay And Environmental Studies On Southern Pine, Joseph Martin Dahlen Dec 2010

Decay And Environmental Studies On Southern Pine, Joseph Martin Dahlen

Theses and Dissertations

This work focused on decay and dimensional stability of southern pine lumber and environmental issues associated with emissions released during kiln drying of southern pine. In one study decking boards were treated with a 3% resin acid solution to increase the dimensional stability. The boards were placed on a roof and weathered for two years. The increased water repellency reduced moisture gain following summer rainstorms by one-third compared to untreated matched samples, this significantly reduced splitting by half and cupping by one-third. In one study decking boards from matched samples were weathered for two years in the roof setup described …

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Detection And Characterization Of A Volatile Compound As A Response To Fall Armyworm (Spodoptera Frugiperda) Feeding In Maize (Zea Mays), Whitney Elizabeth Crow Smith Dec 2010

Detection And Characterization Of A Volatile Compound As A Response To Fall Armyworm (Spodoptera Frugiperda) Feeding In Maize (Zea Mays), Whitney Elizabeth Crow Smith

Theses and Dissertations

Maize (Zea mays) is an important agricultural crop frequently targeted by pests that pose a threat to plant development and survival. To deal with this problem, maize generates a wide variety of responses to attack by pests, from activation of woundresponse pathways to the release of volatile compounds. Several maize lines have been developed that show resistance to one common pest, the larvae of the fall armyworm (Spodoptera frugiperda). Analysis of the volatiles released by the resistant and susceptible lines in the presence and absence of the fall armyworm was conducted using SPME coupled to GC/MS. Caryophyllene, a commonly released …

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Effect Of Gender On Mississippi Hunter Motivations And Substitutability Of Hunting, Vanessa Carina Oquendo Dec 2010

Effect Of Gender On Mississippi Hunter Motivations And Substitutability Of Hunting, Vanessa Carina Oquendo

Theses and Dissertations

Selfministered mail questionnaires were sent to a stratified sample of 1,000 male and 1,000 female Mississippi resident licensed hunters to determine effect of gender on hunting motivations and substitutability of hunting. Exploratory factor analysis and analysis of covariance were used to analyze hunting motivations. Logistic regression was used to determine effects of 14 independent variables on probability of resident hunters reporting a substitute activity. Males and females differed on achievement-oriented “social recognition” and “seeking stimulation” motivations and on affiliative-oriented “family togetherness” motivations. Gender had no significant effect on resident hunter probability of reporting substitute activities. Age and importance of hunting …

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Poplar Interactions With Zinc For Use In Bioremediation And Monitoring, Joshua Pope Adams Dec 2010

Poplar Interactions With Zinc For Use In Bioremediation And Monitoring, Joshua Pope Adams

Theses and Dissertations

Plant mechanisms regulating environmental heavy metal interactions are vital for plant survival. Plants must maintain adequate metal levels while preventing excesses. Several mechanisms involved in heavy metal uptake and sequestration have been identified and studied in hyperaccumulating plants such as Thlaspi caerulescens. These plants accumulate large quantities of metals, but their use in remediation is limited by their small size. On the other hand, mechanisms in high-biomass, non-hyperaccumulating perennial species such as poplar (Populus spp.) are unknown. The central goal of this project is to delineate specific mechanisms in poplar regulating the heavy metal zinc (Zn) for potential use in …

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Reaction Of Bio-Oil With Alcohols: Effect On Long Term Stability And Properties Of Bio-Oil For Use As Fuel, Priyanka Bhattacharya Dec 2010

Reaction Of Bio-Oil With Alcohols: Effect On Long Term Stability And Properties Of Bio-Oil For Use As Fuel, Priyanka Bhattacharya

Theses and Dissertations

Bio-oil is produced by the rapid pyrolysis of biomass and is a source of renewable fuel. The increase in viscosity during storage is a major problem that can be controlled by the addition of methanol or other alcohols. The objective of this research was to determine how alcohols stabilize bio-oil by investigating the reactions of alcohols with low molecular weight aldehydes and acids. The reaction of methanol with hydroxyacetaldehyde (HA) and acetic acid to form the respective acetal or ester was catalyzed by the 7 x 10-4 M strong acids such as sulfuric, hydrochloric, p-toluene sulfonic acid, and methylsulfonic acid. …

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Exploration Of Microbial Deposits Known As Giant Hams From The Lower Permian Laborcita Formation, Sacramento Mountains, New Mexico, Kevin Martin Moore Dec 2010

Exploration Of Microbial Deposits Known As Giant Hams From The Lower Permian Laborcita Formation, Sacramento Mountains, New Mexico, Kevin Martin Moore

Theses and Dissertations

The Lower Permian Laborcita Formation, Sacramento Mountains, New Mexico crops out along a narrow, 27 km strip, and is 240 m at its thickest. The objective of this study was to document ham-shaped microbial deposits through petrography and scanning electron microscopy. The study concluded that the hams began as microbial oncoids, and only the third growth zone exhibited in situ growth giving the deposit its shank-like shape. They are believed to have originated as oncoids on the presence of irregular, concentric, biogenic micritic laminae surrounding a nucleus. A microbial origin is based upon the presence of irregular laminations, fenestral fabrics, …

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A Revision Of The New World Species Of Donacaula Meyrick And A Phylogenetic Analysis Of Related Schoenobiinae (Lepidoptera: Crambidae), Edda Lis Martinez Calez Dec 2010

A Revision Of The New World Species Of Donacaula Meyrick And A Phylogenetic Analysis Of Related Schoenobiinae (Lepidoptera: Crambidae), Edda Lis Martinez Calez

Theses and Dissertations

Phylogenetic relationships of 13 genera of Schoenobiinae (Lepidoptera: Crambidae) are postulated based on traditional characters of genitalia and wing venation and new characters of the descaled whole body. The phylogenetic analysis yielded one most-parsimonius tree (length 287 steps, CI= .36, RI= .62) that resulted in a monophyletic clade of all genera of Schoenobiinae examined. The monophyly of the Schoenobiinae is supported by a Bremer support value of five. Donacaula is not congeneric with the type-species of Schoenobius, S. gigantellus. The analysis confirms Lewvanich‘s hypothesis that Scirpophaga, Donacaula, Schoenobius, Catagela, and Helonastes are closely related. Based on this analysis, the New …

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Physical And Mechanical Properties Evaluations Of A New Engineered Wood Product, Jonathan Michael Linton Dec 2010

Physical And Mechanical Properties Evaluations Of A New Engineered Wood Product, Jonathan Michael Linton

Theses and Dissertations

Finding alternative uses for small diameter raw materials is a critical problem throughout the United States. Insufficient markets for small diameter, southern yellow pine (Pinus spp.) trees from first plantation thinnings are impacting silvicultural practices on millions of acres of land. In western states, the lack of markets for small diameter ponderosa pine (Pinus ponderosa) and lodgepole pine (Pinus contorta) creates multiple problems in terms of excess material in the forest. This excess material enhances fire potential and reduces land management practices. This research deals with a new structural composite from small diameter raw logs using a technology called steampressed …

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Production Of Second Generation Biofuels From Woody Biomass, Sanjeev Kumar Gajjela Dec 2010

Production Of Second Generation Biofuels From Woody Biomass, Sanjeev Kumar Gajjela

Theses and Dissertations

Increased research efforts have recently been accelerated to develop liquid transportation fuels from bio-oil produced by fast pyrolysis. However, these bio-oils contain high levels of oxygenated compounds that require removal to produce viable transportation fuels. A variety of upgrading technologies have been proposed, of which catalytic hydroprocessing of the raw bio-oil has appears to have the best potential due to the fact that no fractionation of the bio-oil is required prior to treatment. The objective of this research was to apply two-stage catalytic hydroprocessing to bio-oil with heterogeneous catalysts to produce hydrocarbon fuels. To achieve this objective seven catalysts were …

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Demystifying Conventional Assumptions: Do African American Parents Anticipate Investing Less Toward Their Children’S College Costs Than Their White Peers?, Abebayehu Aemero Tekleselassie Dec 2010

Demystifying Conventional Assumptions: Do African American Parents Anticipate Investing Less Toward Their Children’S College Costs Than Their White Peers?, Abebayehu Aemero Tekleselassie

Journal of Student Financial Aid

Some researchers and theorists tend to portray African American parents as lacking the cultural know-how to provide a supportive home environment that enhances college access and success for their children. Since contribution toward college costs is one tangible means by which researchers gauge parents’ commitment toward their children’s education, this study draws data from the National Longitudinal Study (NELS: 1988/2000) and examines how the amount and source of funding parents anticipate toward college costs differs between African Americans and Whites. Results indicate that while racial differences in anticipated college funding appear to favor Whites, who aggregately expect to contribute more …

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An Optimization Model For The Allocation Of University Based Merit Aid, Paul K. Sugrue Dec 2010

An Optimization Model For The Allocation Of University Based Merit Aid, Paul K. Sugrue

Journal of Student Financial Aid

The allocation of merit-based financial aid during the college admissions process presents postsecondary institutions with complex and financially expensive decisions. This article describes the application of linear programming as a decision tool in merit based financial aid decisions at a medium size private university. The objective defined for the model is to maximize the quality of the incoming class as measured by average combined SAT scores. The approach involves using the yield rates from the previous year for each combination of SAT score and merit aid award while eliminating from consideration combinations for which insufficient data is available. Parameter estimation …

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The Relationship Of Institutional Tuition Discounts With Enrollment At Private, Not-For-Profit Institutions, Nathan E. Lassila Dec 2010

The Relationship Of Institutional Tuition Discounts With Enrollment At Private, Not-For-Profit Institutions, Nathan E. Lassila

Journal of Student Financial Aid

Empirical studies exploring the impact of student aid on postsecondary enrollment often stop short of the specific examination of institutional tuition discounting. This research uses separate empirical ordinary least squares (OLS) regression models to examine three questions using public choice theory, positing that enrollment decisions may be affected by many variables but will be driven primarily by discounted cost. These questions are: Does a relationship exist between institutional tuition discount and enrollment? Does institutional tuition discount have a measurably different effect on enrollment of different racial or ethnic groups? What is the relationship between institutional tuition discount and enrollment over …

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Summary Of Berkson V. Lepome, 126 Nev. Adv. Op. No. 46, Cayla Witty Dec 2010

Summary Of Berkson V. Lepome, 126 Nev. Adv. Op. No. 46, Cayla Witty

Nevada Supreme Court Summaries

No abstract provided.

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Graphs Of Bounded Degree And The P-Harmonic Boundary, Michael J. Puls Dec 2010

Graphs Of Bounded Degree And The P-Harmonic Boundary, Michael J. Puls

Publications and Research

Let p be a real number greater than one and let G be a connected graph of bounded degree. We introduce the p-harmonic boundary of G and use it to characterize the graphs G for which the constant functions are the only p-harmonic functions on G. We show that any continuous function on the p-harmonic boundary of G can be extended to a function that is p-harmonic on G. We also give some properties of this boundary that are preserved under rough-isometries. Now let Gamma be a finitely generated group. As an application of our results, we characterize the vanishing …

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Double Compact Objects As Low-Frequency Gravitational Wave Sources, Krzysztof Belczynski, Matthew Benacquista, Tomasz Bulik Dec 2010

Double Compact Objects As Low-Frequency Gravitational Wave Sources, Krzysztof Belczynski, Matthew Benacquista, Tomasz Bulik

Physics & Astronomy Faculty Publications

We study the Galactic field population of double compact objects (DCOs; NS-NS, BH-NS, BH-BH binaries) to investigate the number (if any) of these systems that can potentially be detected with the Laser Interferometer Space Antenna (LISA) at low gravitational wave frequencies. We calculate the Galactic numbers and physical properties of these binaries and show their relative contributions from the disk, bulge, and halo. Although the Galaxy hosts ∼10 5 DCO binaries emitting low-frequency gravitational waves, only a handful of these objects in the disk will be detectable with LISA, but none from the halo or bulge. This is because the …

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The Bg News December 10, 2010, Bowling Green State University Dec 2010

The Bg News December 10, 2010, Bowling Green State University

BG News (Student Newspaper)

The BGSU campus student newspaper. December 10, 2010. Volume 101-Issue 73.

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Some Old Time Conjurers., Henry Ridgely Evans Dec 2010

Some Old Time Conjurers., Henry Ridgely Evans

The Open Court

No abstract provided.

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