Digital Commons Network^™

The Association Of Athletic Expenditures With Student Academic Achievement In Arkansas Secondary Public Schools, Mike A. Skelton

Student Theses and Dissertations

Data on public secondary schools in Arkansas were gathered for two separate school years, 2005-2006 (N = 278) and 2006-2007 (N = 279), to determine if there was an association between athletic expenditures and student academic achievement. Prior to this research, there was little empirical evidence demonstrating any effect that athletic spending has upon student academic achievement throughout the State of Arkansas or the United States. In addition, there were two pieces of research found, one in Texas and one in Arkansas, indicating that athletic spending has a somewhat negative association with student academic achievement. The major purposes of this …

Subaru High-Resolution Spectroscopy Of Star G In The Tycho Supernova Remnant, Wolfgang E. Kerzendorf, Brian P. Schmidt, M. Asplund, Ken'ichi Nomoto, Ph. Podsiadlowski, Anna Frebel, Robert A. Fesen, David Yong

Dartmouth Scholarship

It is widely believed that Type Ia supernovae (SNe Ia) originate in binary systems where a white dwarf accretes material from a companion star until its mass approaches the Chandrasekhar mass and carbon is ignited in the white dwarf's core. This scenario predicts that the donor star should survive the supernova (SNe) explosion, providing an opportunity to understand the progenitors of SNe Ia. In this paper, we argue that rotation is a generic signature expected of most nongiant donor stars that is easily measurable. Ruiz-Lapuente et al. examined stars in the center of the remnant of SN 1572 (Tycho SN) …

New Academic Staff Members For 2009-2010, Sherry Wallace

News and Events (Discontinued Series)

No abstract provided.

Variable Temperature Sensitivity Of Soil Organic Carbon In North American Forests, Cinzia Fissore, Christian P. Giardina, Christopher W. Swanston, Gary M. King, Randall K. Kolka

Faculty Publications

We investigated mean residence time (MRT) for soil organic carbon (SOC) sampled from paired hardwood and pine forests located along a 22 °C mean annual temperature (MAT) gradient in North America. We used acid hydrolysis fractionation, radiocarbon analyses, long-term laboratory incubations (525-d), and a three-pool model to describe the size and kinetics of the acid insoluble C (AIC), active and slow SOC fractions in soil. We found that active SOC was 2 ± 0.2% (mean ± SE) of total SOC, with an MRT of 33 ± 6 days that decreased strongly with increasing MAT. In contrast, MRT for slow SOC …

Strategy And Power In Contemporary Clinical Practice : A Theoretical Examination Of Family Preservation Philosophy And Strategic Family Therapy In The Context Of Poverty, Emily Erchick

Theses, Dissertations, and Projects

This theoretical study reviewed family therapy and child welfare literature in the context of poverty. Clinical practice with low-income families was investigated historically. The literature brought to life issues of clinical power and aspects of social control and social reform inherent in direct practice. A consideration of family preservation philosophy and strategic family therapy was proposed. In describing these two schemas separately, their synthesis was eventually formulated and supported. The larger history of ideas that emerged yielded an epistemological discrepancy between models of practice in the field of family therapy. These discrepancies were further exaggerated by issues of policy, funding, …

Nebraska Republican River Policy Choices, J. David Aiken

Cornhusker Economics

On June 30, 2009 an arbitrator recommended that Nebraska be required to pay Kansas $10,000 for violating the Republican River Settlement, after Kansas had originally requested $72 million in damages. The August 5, 2009 Cornhusker Economics explored the significance of the arbitrator’s decision. This newsletter explores the choices facing the Governor, Unicameral and Republican Basin Natural Resources Districts (NRDs).

What Is Highly Qualified For Arkansas Teachers?, Nathan C. Jensen, Gary W. Ritter

Policy Briefs

In response to the No Child Left Behind Act of 2001, state departments of education, including the Arkansas Department of Education (ADE), established rules to define a “highly qualified” teacher (HQT). While the spirit of this provision is clear and reasonable, the devil is, of course, in the details. That is, what exactly does highly qualified mean? Observers had good reason to be suspicious early on when many states claimed to have 95% or more of teachers being highly qualified. (For instance, according to Education Commission of the States, 100% of North Dakota teachers are considered highly qualified and 14 …

Kiwivault: Encryption Software For Portable Storage Devices, Trevor Bradshaw Florence

Theses and Dissertations

While many people use USB flash drives, most do not protect their stored documents. Solutions for protecting flash drives exist but inherently limit functionality found in unprotected drives such as portability, usability, and the ability to share documents between multiple people. In addition, other drawbacks are introduced such as the possibility of losing access to protected documents if a password is lost. Assuming protecting portable documents is important, in order for people to be willing to protect their documents they should be required to make as few sacrifices in functionality as possible. We introduce KiwiVault, a USB flash drive encryption …

The Language Of Mathematics: Virginia Standards Of Learning Mathematical Pictionary For Grades K-3., Amanda Rashelle Collins-Browning

Electronic Theses and Dissertations

My experience teaching in Virginia schools, pacing and aligning instruction to the Virginia Standards of Learning, caused me to recognize the need for a mathematics tool to simplify and transition K-3 mathematics vocabulary usage and instruction. The language of mathematics uses three linguistic tools: words, symbols, and diagrams. Within this thesis I developed an instructional tool, a "Mathematics Pictionary", to accommodate primary grades K-3 and transition mathematical language and vocabulary skills between the primary grades aligned to the instruction and guidelines of the Virginia Standards of Learning. The Pictionary may be used coherently with lesson plans, available from the Virginia …

Analysis And Modeling Of Ducted And Evanescent Gravity Waves Observed In The Hawaiian Airglow, D. B. Simkhada, J. B. Snively, M. J. Taylor, S. J. Franke

Publications

Short-period gravity waves of especially-small horizontal scale have been observed in the Maui, Hawaii airglow. Typical small-scale gravity wave events have been investigated, and intrinsic wave propagation characteristics have been calculated from simultaneous meteor radar wind measurements. Here we report specific cases where wave structure is significantly determined by the local wind structure, and where wave characteristics are consistent with ducted or evanescent waves throughout the mesopause region. Two of the documented events, exhibiting similar airglow signatures but dramatically different propagation conditions, are selected for simple numerical modeling case studies. First, a Doppler-ducted wave trapped within relatively weak wind flow …

Mapping The Dorsal Skin Pigmentation Patterns Of Two Sympatric Populations Of Ambystomatid Salamanders, Ambystoma Opacum And A. Maculatum From Northeast Tennessee., Lok Raj Pokhrel

Electronic Theses and Dissertations

Because of growing concern of habitat fragmentation and its adverse effects on salamander communities in Appalachian region, sympatric populations of ambystomatid salamanders A. opacum and A. maculatum were studied in Northeast Tennessee to address a number of questions: i) the extent of sexual size dimorphism (SSD) in both species, ii) what traits influence the dorsal skin pigmentation and how, iii) whether gender differences in developmental stability occur, and iv) the extent of phenotypic variation within each species. The findings of this study revealed SSD in both species of salamanders. The most parsimonious statistical model was developed that explained the influence …

A Phylogenetic Analysis Of Species Relationships In Hemlocks, The Genus Tsuga (Pinaceae)., Jordan David Baker

Electronic Theses and Dissertations

The genus Tsuga is comprised of eight extant species found in North America and East Asia and four species represented by fossils from Europe and Japan. This study presents the first phylogenetic analysis based on structural, biochemical, and molecular sequence data. Characters obtained from published and unpublished literature were combined with new morphological characters from seeds, seedlings, and leaf cuticle material. Results from parsimony analyses of these characters differed from the published molecular based phylogeny. The non-molecular based phylogeny resolves two separate clades, a North American and an Asian, but did not group the western North American species, as in …

Novel Strategy For The Synthesis Of Allenes., Mark-Henry Mbahmi Kamga

Electronic Theses and Dissertations

Allenes are very important chemical reagents in organic synthesis. Due to their high reactivity, they have been extensively used to carry out a variety of unique and effective chemical transformations including but not limited to ionic and free radical additions and transition metal catalyzed cyclizations. As the chemistry of this group of compounds is explored further and their applications expanded there is a need to develop alternative and cost effective methods for their synthesis. Our approach involves the synthesis of allenes from oxa-bicyclo-alkan-2-ones by methyllithium induced Eschenmoser fragmentation of the bicyclotosylhydrazone derivatives.

Studies Of Titanium Dioxide Nanoparticles And Surfactants Effects, Singly And In Combinations, On Luminescence Intensity Of Some Aromatic Compounds., Charles Anim Odame-Ankrah

Electronic Theses and Dissertations

Luminescence techniques are sensitive, selective, and widely used in analysis. Luminescence intensity is attenuated by quenchers. This research has focused on the use of surfactants such as CTAB, SDS, and TX-100 singly or together with TiO₂ nanoparticles to evaluate their individual and combined effects on some fluorescent aromatic compounds such as pyrene, fluoranthene, anthracene, phenanthrene, and carbazole. Rutile phase TiO₂ was synthesized using the low temperature sol-gel method. Carbazole and phenanthrene were severely quenched by all surfactants singly or in combination with TiO₂. Anthracene and fluoranthene showed some enhancement in their luminescence intensity. The most dramatic …

Studies Of Capsaicinoids Contents Of Locally Grown And Commercial Chilies Using Reversed-Phase High Performance Liquid Chromatography., John Kailemia Muchena

Electronic Theses and Dissertations

Capsaicinoids are a class of compounds responsible for the "heat" of hot peppers. Capsaicin and dihydrocapsaicin have the highest burning effect. The aim of this work is to separate and quantify the two major capsaicinoids in fruits harvested at different stages of development and at different seasons. Simple and rapid HPLC method involves 73:27% methanol water mobile phase with C₁₈ stationary phase and UV-Vis detector set at 210 nm. The method showed good reproducibility with 1.74% - 4.72% relative standard deviations, a linear response within 0.65–45.5 and 0.25-17.5 μg/mL for capsaicin and dihydrocapsaicin, respectively. The method achieved average recovery …

Computational Investigation Of Spin Traps Using Hybrid Solvation Models., Sai Sriharsha Manoj Konda

Electronic Theses and Dissertations

The cyclic nitrone 5,5-dimethyl-1-pyrroline-N-oxide (DMPO), and the lesser known linear phenyl-N-tert-butylnitrone (PBN) and its phosphorylated analogues have been used as spin traps for the investigation of free radicals in biological systems. Theoretical work on these molecules suggests that there are important differences in their properties between biological systems and isolated molecules in the gas phase, most likely resulting from intra and intermolecular hydrogen bonding. Most dielectric solvation models such as the polarized continuum model and COSMO are incapable of direct determination of solvent-spin trap chemical interactions. To examine this, hybrid models incorporating COSMO for long range effects and discrete solvent …

Studies Of The Preparations And Use Of Sol-Gel For Enzyme Immobilization And Analytical Applications., Suzana Hamdan

Electronic Theses and Dissertations

Much attention has been paid to immobilization of enzymes to improve enzyme stability and permit its reuse. Glucose oxidase entrapment in different kinds of silica sol-gel matrices was investigated. The enzyme showed stable activity for 11 uses in the sol-gel with tetramethyl orthosilicate (TMOS) as precursor, and at least 7 uses in the sol-gel induced electrochemically with tetraethyl orthosilicate (TEOS) as precursor. The sol-gel made with TEOS as precursor and HCl as catalyst showed stability in enzyme activity for 11 uses but the activity decreases on the same sol-gel when modified with silica nanoparticles. Factors such as optimal incubation time …

Perceptions Of Educators' Use Of English As A Second Language Strategies And Research-Based Practices With English Language Learners In Northeast Tennessee., Marisol Hernandez

Electronic Theses and Dissertations

The purpose of the study was to investigate the level of use of English as a second or subsequent language strategies and research-based practices in the instruction of ELL students in Northeast Tennessee. The researcher sought to ascertain the perceptions of educators in Northeast Tennessee about teaching practices and beliefs in regard to the instruction of ELL students and to determine to what level these educators include ESL strategies and ESL research-based practices when teaching ELL students.

Participants in the study consisted of regular classroom teachers, English as a second language teachers, and principals from districts identified as ELL low …

Environmental Determinism: Broken Paradigm Or Viable Perspective?., Gerald L. Hardin

Electronic Theses and Dissertations

The research was to examine the issue of environmental determinism. It was an ideology that was prevalent throughout the early decades of the 20^th century that held that the natural environment was responsible for virtually all human development. It helped bring the study of geography into the venue of postsecondary education, where it was viewed as a tool for study of human activities. It was a new science inspired by Darwinism that viewed human adaptation to the natural environment as critical to socialization.

Relying on historical sources, the purpose of the study was to reveal how environmental determinism became …

Familial Influences On Second- And Third-Generation Teachers In An Eastern Tennessee School District., Henry Clay Blazer

Electronic Theses and Dissertations

The purpose of this study was to determine if having a parent, a grandparent, or both a parent and grandparent who were educators was a contributing factor for teachers in not only choosing education but also remaining in the profession long term. I constructed a theoretical framework explaining the phenomenon. A review of the literature provided a basis for classifying motivations teachers have for entering the profession, possible reasons for leaving, satisfiers, and dissatisfiers. There were 18 participants in this grounded-theory research. The participants were identified using the snowball method. My study was conducted in a rural county in East …

Roosevelt, Churchill, And The Words Of War: Their Speeches And Correspondence, November 1940-March 1941., Leslie A. Mattingly Bean

Electronic Theses and Dissertations

Prime Minister Winston Churchill and President Franklin Roosevelt inspired the Allies with memorable speeches in their fight against the Axis Powers during World War II.

These speeches resulted from their personalities, preparation, and correspondence; and the speeches directed Allied conduct and challenged Axis aggression. The speeches examined here pertain to Lend-Lease in November, 1940-March, 1941.

The author consulted the collections of Churchill's and Roosevelt's speeches and correspondence and drew from memoirs and newspapers. The first two chapters examine Churchill and Roosevelt's rhetorical abilities; the third chapter looks at how their correspondence shaped their speeches; and the fourth chapter looks at …

Independent Domination In Complementary Prisms., Joel Agustin Gongora

Electronic Theses and Dissertations

Let G be a graph and G̅ be the complement of G. The complementary prism GG̅ of G is the graph formed from the disjoint union of G and G̅ by adding the edges of a perfect matching between the corresponding vertices of G and G̅. For example, if G is a 5-cycle, then GG̅ is the Petersen graph. In this paper we investigate independent domination in complementary prisms.

Qualitative Models Of Neural Activity And The Carleman Embedding Technique., Azamed Yehuala Gezahagne

Electronic Theses and Dissertations

The two variable Fitzhugh Nagumo model behaves qualitatively like the four variable Hodgkin-Huxley space clamped system and is more mathematically tractable than the Hodgkin Huxley model, thus allowing the action potential and other properties of the Hodgkin Huxley system to be more readily be visualized. In this thesis, it is shown that the Carleman Embedding Technique can be applied to both the Fitzhugh Nagumo model and to Van der Pol's model of nonlinear oscillation, which are both finite nonlinear systems of differential equations. The Carleman technique can thus be used to obtain approximate solutions of the Fitzhugh Nagumo model and …

The Last Of The Mixed Triple Systems., Ernest Jum

Electronic Theses and Dissertations

In this thesis, we consider the decomposition of the complete mixed graph on v vertices denoted M_v, into every possible mixed graph on three vertices which has (like M_v) twice as many arcs as edges. Direct constructions are given in most cases. Decompositions of theλ-fold complete mixed graph λM_v, are also studied.

Exploring Earth-Building Technology For Liberia., Isaac Dompo Mayon

Electronic Theses and Dissertations

This paper discusses earth as a building material and the extent to which earth building technology has evolved over the years. In particular it addresses the adobe, compressed and rammed earth techniques of earth building as suitable techniques for Liberia consumption. In addition, the paper investigates the suitability of the Latosols soils of Liberia for earth building construction purposes using standardized earth building principles and requirements. A local Johnson City, Tennessee, earth sample found to have the same physical characteristics of the Latosols of Liberia was used to simulate Liberia soils to produce specimen blocks at different configurations of moisture …

A Practical Comparison Between Traditional Periodization And Daily-Undulated Weight Training Among Collegiate Track And Field Athletes., Keith Ballard Painter

Electronic Theses and Dissertations

Recently, comparisons of "periodized" strength training methods have become a focus of sport science. Daily undulating periodization (DUP), using daily alterations in repetitions, has been developed and touted as a superior method of training. The purpose of this study is to compare traditional periodization (TRA) to DUP in Division I track and field athletes. Thirty-one athletes were assigned to either a TRA or the DUP group training programs based on sex, year, and event. Training lasted 10 weeks. There were 4 testing sessions focusing on strength characteristics. Although, trends favored the TRA group for strength and rate of force development, …

Using Student Assessment To Improve Teaching And Educational Policy, Patrik Scheinin

2009 - 2019 ACER Research Conferences

Keynote Address 4 - (includes video).

An Event Start: Innovative Resources To Support Teachers To Better Monitor And Better Support Students Measured Below Benchmark, Jocelyn Cook

2009 - 2019 ACER Research Conferences

No abstract provided.

Large Cohort Testing : How Can We Use Assessment Data To Effect School And System Improvement, David Wasson

2009 - 2019 ACER Research Conferences

No abstract provided.

Making Local Meaning From National Assessment Data : Napnulit, Helen Wildy

2009 - 2019 ACER Research Conferences

Keynote Address 3 - (includes video).