Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

University of Mississippi

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 2341 - 2370 of 8931

Full-Text Articles in Entire DC Network

A Phenomenography Of Mississippi African American High School Students' Progress In English Language Arts (Ela), Ebonee Nicole Williams Jan 2015

A Phenomenography Of Mississippi African American High School Students' Progress In English Language Arts (Ela), Ebonee Nicole Williams

Electronic Theses and Dissertations

Increasing academic achievement among African Americans has become increasingly challenging for several educators. To receive aid in their pedagogical efforts, many of these teachers read qualitative literature and often discover success stories told by teachers and/or administrators. Qualitative research rarely includes African American students who share their own journey of academic achievement. To offer different insight that will specifically help high school educators increase ELA achievement among students of color, this qualitative study employed a phenomenographic approach to uncover how African American students in a Mississippi public high school perceived their experiences of meeting growth in English Language Arts (ELA). …

Go to article

Elliptical Metasurfaces For Cloaking And Antenna Applications At Microwave And Terahertz Frequencies, Hossein Mehrpourbernety Jan 2015

Elliptical Metasurfaces For Cloaking And Antenna Applications At Microwave And Terahertz Frequencies, Hossein Mehrpourbernety

Electronic Theses and Dissertations

No abstract provided.

Go to article

Pathogen Indicator Monitoring In The Ross Barnett Reservoir, Hannie Quay Parker Capps Jan 2015

Pathogen Indicator Monitoring In The Ross Barnett Reservoir, Hannie Quay Parker Capps

Electronic Theses and Dissertations

Man-made reservoirs are often used for both water supply and recreation. The Ross Barnett Reservoir in central Mississippi, a 33,000-acre man-made lake, provides drinking water to the city of Jackson, MS, and forty-eight surrounding communities. Further, an estimated 2.5 million people visit the Reservoir each year for recreational purposes, including boating, fishing, water-skiing, and swimming. Protecting the water quality in the Reservoir is important for these visitors and inhabitants along the shoreline, and for these reasons, the U.S. Environmental Protection Agency has selected it as a Priority Watershed in Mississippi. Presently, there is a concern regarding recent data collected that …

Go to article

Power And Hotspot Modeling For Modern Gpus, Md Mainul Hassan Jan 2015

Power And Hotspot Modeling For Modern Gpus, Md Mainul Hassan

Electronic Theses and Dissertations

As General Purpose GPUs (GPGPU) are increasingly becoming a prominent component of high performance computing platforms, power and thermal dissipation are getting more attention. The trade-offs among performance, power, and heat must be well modeled and evaluated from the early stage of GPU design. This necessitates a tool that allows GPU architects to quickly and accurately evaluate their design. There are a few models for GPU power but most of them estimate power at a higher level than architecture, which are therefore missing hardware reconfigurability. In this thesis, we propose a framework that models power and heat dissipation at the …

Go to article

Specification And Mechanical Verification Of Performance Profiles Of Software Components, Nighat Yasmin Jan 2015

Specification And Mechanical Verification Of Performance Profiles Of Software Components, Nighat Yasmin

Electronic Theses and Dissertations

Software performance predictability is vital to a system design and unpredictable performance is a leading cause of software failure. The emphasis of this dissertation is on verification that component-based software performs as specified. Performance profiles (specifications) depend on functional specifications and are necessary for all components for modular verification. Modular verification process is scalable because it uses profiles as contracts and allows verification of a single component in isolation with the assumption that any underlying component would have already been verified or will be verified to meet its specifications independently. This dissertation presents an integration of performance specification (profiles) with …

Go to article

Technology Access, Integration, And Student Achievement: Examining Diverse Technology Learning Environments And College And Career Readiness In Rural North Mississippi High Schools, Randi Nicole Peel Jan 2015

Technology Access, Integration, And Student Achievement: Examining Diverse Technology Learning Environments And College And Career Readiness In Rural North Mississippi High Schools, Randi Nicole Peel

Electronic Theses and Dissertations

Teaching and learning practices influence college and career readiness (CCR) as measured by newly implemented ComCore State Standards (CCSS) through next-generation assessments. This mixed-methods study examined different levels of technology access and integration on current CCR measurements in two rural North Mississippi school districts. The approach incorporated a causal-comparative design and an exploration of attitudes and perceptions about technology’s impact on college and career readiness. The study found statistical significance in differences of ACT® mean scores for the composite, English, reading and science assessments between the two school districts. The district with a one to one laptop learning environment demonstrated …

Go to article

The Effects Of Departmentalized And Self-Contained Structures On Student Achievement, Carrie Renee Skelton Jan 2015

The Effects Of Departmentalized And Self-Contained Structures On Student Achievement, Carrie Renee Skelton

Electronic Theses and Dissertations

The present study investigated the effects of departmentalized and self-contained classroom structures on student achievement of fourth, fifth, and sixth grade students in Mississippi schools. Historical MCT2 proficiency level percentages were collected from the Mississippi Department of Education website for the following school years: 2009-2010, 2010-2011, 2011-2012, and 2012-2013. This data was used to calculate a revised Quality of Distribution Index (QDI-R) for each school included in the study. Using the QDI-R, differences were generated between school year (SY) 2009-2010 and SY 2010-2011; between SY 2010-2011 and SY 2011-2012; and between SY 2011-2012 and SY 2012-2013. This yielded three data …

Go to article

Mississippi Statewide Accountability System: A Measure Of Academic Attainment Or Other Factors, Eddie De Anderson Jan 2015

Mississippi Statewide Accountability System: A Measure Of Academic Attainment Or Other Factors, Eddie De Anderson

Electronic Theses and Dissertations

This quantitative study analyzed the construct validity of the Mississippi Statewide Accountability System through an analysis of the relationship between teacher, financial, socio-economic, and social characteristics and the Quality of distribution index of public school districts in Mississippi. This study sought to determine if there were constructs outside the control of schools and districts that significantly correlated to outcomes of the Mississippi Statewide Accountability System that were not accounted for in the calculations. Educational leaders, communities, and other educational stakeholders have paid close attention to the Mississippi Statewide Accountability System as legislators have chosen to use it to rank schools …

Go to article

Principal Preparation Effectiveness: A Program Evaluation Of The University Of Mississippi's Principal Preparation Programs, Summer Pannell Jan 2015

Principal Preparation Effectiveness: A Program Evaluation Of The University Of Mississippi's Principal Preparation Programs, Summer Pannell

Electronic Theses and Dissertations

Since the creation of the principal's position, the role of principal has evolved from building manager and disciplinarian to a multi-faceted role responsible for strategic planning, managing funds, ensuring legislative compliance, implementing reforms, and increasing student achievement. Past research contends principal leadership may be the second most influential factor in student achievement, surpassed only by the effect of the classroom teacher (Marzano, Waters, & McNulty, 2005; Joyce & Showers, 2002). The role of the university Principal Preparation Program (PPP) is to equip participants with effective leadership practices to face the demands of school leadership roles (Duncan et al., 2011; Hernandez …

Go to article

Experimental Validation Of Metasurface Cloak For Dielectric Cylinder At Mircowave Frequencies, Corey Isaac Garner Jan 2015

Experimental Validation Of Metasurface Cloak For Dielectric Cylinder At Mircowave Frequencies, Corey Isaac Garner

Electronic Theses and Dissertations

No abstract provided.

Go to article

Localization Of Sensors In Presence Of Fading And Mobility, Hamzeh Hussain Omari Jan 2015

Localization Of Sensors In Presence Of Fading And Mobility, Hamzeh Hussain Omari

Electronic Theses and Dissertations

The objective of this dissertation is to estimate the location of a sensor through analysis of signal strengths of messages received from a collection of mobile anchors. In particular, a sensor node determines its location from distance measurements to mobile anchors of known locations. We take into account the uncertainty and fluctuation of the RSS as a result of fading and take into account the decay of the RSS which is proportional to the transmitter-receiver distance power raised to the PLE. The objective is to characterize the channel in order to derive accurate distance estimates from RSS measurements and then …

Go to article

Passing Time, Bryan Horn Jan 2015

Passing Time, Bryan Horn

Electronic Theses and Dissertations

In today’s fast paced world based around expedience and convenience, we often find ourselves lost in the hustle and bustle of daily life. While keeping up with our busy schedules it is hard to find those moments of pause in which we can regain our composure. The ceramic vessels in Passing Time are about those moments in between, like the space between musical notes they are essential to our understanding and being. This body of work represents the building and maintaining of relationships, the welcoming space of home and establishing invitation through the act of giving and sharing. I use …

Go to article

Machine Dreams, David Lingen Bradway Jan 2015

Machine Dreams, David Lingen Bradway

Electronic Theses and Dissertations

The works in my thesis exhibition have all been made within my three years attending The University of Mississippi and relate to my experiences traveling around South America and various places in North America, where I observed how different cultures view power and how it serves them. In this body of work, I looked for meaning in the process of discovery, whether it is found in a personal, social, or regional background. The exhibition is composed mostly of medium to large prints, in addition to some drawings and chine collé. The prints vary in size, shape, color, pattern, mediums and …

Go to article

Complex Vector Lattices: Tensor Products And Multilinear Maps, Christopher Michael Schwanke Jan 2015

Complex Vector Lattices: Tensor Products And Multilinear Maps, Christopher Michael Schwanke

Electronic Theses and Dissertations

In this thesis, we study completions of Archimedean real vector lattices relative to any nonempty set of continuous positively homogeneous functions defined on Rn. Examples of such completions include square mean closed vector lattices and geometric mean closed vector lattices. These functional completions lead to a vector lattice complexification of any Archimedean real vector lattice. Unlike the vector space complexification of an Archimedean real vector lattice, the vector lattice complexification always results in an Archimedean complex vector lattice. For example, we prove that the vector space complexification of the Fremlin tensor product C(X)⊗C(Y) is not a complex vector lattice when …

Go to article

Acousto-Electric Impedance Of Ferroelectric Phononic Superlattice, Ola Hassan Nusierat Jan 2015

Acousto-Electric Impedance Of Ferroelectric Phononic Superlattice, Ola Hassan Nusierat

Electronic Theses and Dissertations

The Acousto-Electric Impedance z of a Ferroelectric Phononic Superlattice (fps) is investigated. The analytical derivation of z and its phase reveal that both are functions of physical parameters such as the electromechanical coupling coefficient, the mechanical quality factor, the domain length and the phase velocity of the plate acoustic waves (paw). Mathematical code is produced that allows for modeling z in a two dimensional fps. It is observed that z depends on the number of domains in the fps structure. Fewer domains in the structure might minimize z or make it approach zero at certain conditions. A series of experiments …

Go to article

Gini Covariance Matrix And Its Affine Equivariant Version, Lauren Anne Weatherall Jan 2015

Gini Covariance Matrix And Its Affine Equivariant Version, Lauren Anne Weatherall

Electronic Theses and Dissertations

Gini's mean difference (GMD) and its derivatives such as Gini index have been widely used as alternative measures of variability over one century in many research fields especially in finance, economics and social welfare. In this dissertation, we generalize the univariate GMD to the multivariate case and propose a new covariance matrix so called the Gini covariance matrix (GCM). The extension is natural, which is based on the covariance representation of GMD with the notion of multivariate spatial rank function. In order to gain the affine equivariance property for GCM, we utilize the transformation-retransformation (TR) technique and obtain TR version …

Go to article

Method Development For Mass Spectrometric Characterization Of Ultra-Small Nanomolecules And Mass Spectrometry Imaging Of Selected Biomolecules, Nuwan K. Kothalawala Jan 2015

Method Development For Mass Spectrometric Characterization Of Ultra-Small Nanomolecules And Mass Spectrometry Imaging Of Selected Biomolecules, Nuwan K. Kothalawala

Electronic Theses and Dissertations

High sensitivity, selectivity and remarkable identification capabilities facilitate the applicability of mass spectrometry (MS) in diverse fields. This dissertation outlines how this cutting edge technology is used to determine the chemical composition of the ultra-small nanomolecules (NMs) to atomic precision and obtain spatial resolution of selected biomolecules using mass spectrometry imaging (MSI). Chapter I includes introduction to electrospray ionization (ESI) and matrix assisted laser desorption ionization (MALDI) MS used in my PhD research. Chapter II explains how high resolution ESI-MS methods were developed to analyze the polar water-soluble NMs. These new methods express how ESI-MS parameters need to be optimized …

Go to article

Microtremor Recordings In Northern Mississippi: Evaluating Site Effect And Correlating With Wave Climate, Zhen Guo Jan 2015

Microtremor Recordings In Northern Mississippi: Evaluating Site Effect And Correlating With Wave Climate, Zhen Guo

Electronic Theses and Dissertations

Site effects is considered as one of the main reasons that cause enormous damages in earthquakes and it is mainly controlled by the local geological condition. The main research area, Northern Mississippi, is located in Mississippi Embayment (ME) where is mainly composed of unconsolidated sediments which can be as thick as 1400m along the Mississippi River floodplain, and is favorable to have significant site effects. Meanwhile Northern Mississippi is also located in the moderate to heavy potential damage area of the New Madrid Seismic Zone, which is in the northern section of ME. Therefore, it is very necessary to evaluate …

Go to article

Effective Tuning Of Bimetallic Composition Of Gold-Copper Nanomolecules And The Emergence Of Plasmon-Like Feature In Optical Spectra, Asantha Champika Dharmaratne Jan 2015

Effective Tuning Of Bimetallic Composition Of Gold-Copper Nanomolecules And The Emergence Of Plasmon-Like Feature In Optical Spectra, Asantha Champika Dharmaratne

Electronic Theses and Dissertations

Au144-xCux(SR)60 alloy nanomolecules were synthesized and characterized by using ESI-MS to atomic precision. A maximum of 23 copper atoms replace the gold atoms; when the number of copper atoms is higher than eight, a surface plasmon-like peak appears at ∼520 nm. Based on the fundamental, elemental properties of Au and Cu, we predict a mixed atomic ordering and incorporation into the Au12 and Au 42 shells of the proposed icosahedral structured model. Alloy nanomolecules reported here could have potential applications in the field of catalysis and optical sensors.

Go to article

Fiber Compaction And Wetout In Tapered Resin Injection Pultrusion Manufacturing, Naveen Babu Masuram Jan 2015

Fiber Compaction And Wetout In Tapered Resin Injection Pultrusion Manufacturing, Naveen Babu Masuram

Electronic Theses and Dissertations

Pultrusion is a continuous process for manufacturing composite materials with constant cross section. Reinforced fibers are pulled through a resin, possibly folloby a separate injection chamber preforming system, and into a heated die, where the resin undergoes complete wetout. Thus the required pultruded composite is obtained in the desired profile. The main objective of this research is to present a numerical model employing the finite volume technique to simulate the resin flow in a tapered injection chamber through the fiber reinforcement when compaction of the fiber reinforcement is taken into account. The numerical model predicts the impact of design and …

Go to article

Some Experimental Investigation On Effect Of Light And Vibration On Nano Coated Piezo For Energy Harvesting, Abhay Sharma Jan 2015

Some Experimental Investigation On Effect Of Light And Vibration On Nano Coated Piezo For Energy Harvesting, Abhay Sharma

Electronic Theses and Dissertations

PZT is a promising piezoelectric ceramic material which has a wide range of applications in a variety of fields such as acoustic sensors and transducers, electrical switches, medical instrumentation, artificial sensitive skin in robotics, automotive detection on roads, nondestructive testing , structural health monitoring and as a biocompatible material. In this research a cantilever based multi energy harvester was developed to maximize the power output of PZT sensor. Nano mixtures containing graphene, ferrofluid nanoparticle (FNP) and ZnO nano particles were used to enhance the piezoelectric and photovoltaic output of the sensor. The samples were tested under different energy conditions to …

Go to article

How Does Executive Function Skills Instruction Impact Student Executive Function Levels And Academic Achievement On Comcore State Standards Assessments?, Donna Akers Jan 2015

How Does Executive Function Skills Instruction Impact Student Executive Function Levels And Academic Achievement On Comcore State Standards Assessments?, Donna Akers

Electronic Theses and Dissertations

Executive function skills are vitally important to student success in school and later in life. Executive function skills can and are improved with specific skills instruction. The literature reveals a correlation between executive function and academic achievement. So, the theory proposed is that raising executive function levels will raise achievement levels. The role of executive function in student achievement in the ComCore State Standards was studied with a fourth grade class. It was conducted over a nine-week period, and used an experimental and control group. Both groups were given an executive function pretest and academic achievement (ComCore) pretest. During the …

Go to article

Identifying A Mechanism For An Infiltration Threshold From The Sunflower River, Ms To The Underlying Alluvial Aquifer, Austin Cole Patton Jan 2015

Identifying A Mechanism For An Infiltration Threshold From The Sunflower River, Ms To The Underlying Alluvial Aquifer, Austin Cole Patton

Electronic Theses and Dissertations

Long-term groundwater level and stream stage measurements at a USGS coupled groundwater stream-gaging station located on the Sunflower River in Sunflower, MS show an apparent stage-threshold for infiltration to the underlying alluvial aquifer. This site is located near the center of a large regional groundwater cone of depression in the Mississippi River Valley alluvial aquifer. The USGS well (termed well 3 in this study) was thought to be completed in the regional shallow aquifer, though often recording anomalously high water levels relative to other wells in the region. The purpose of this research was to identify the responsible mechanism for …

Go to article

Wind Induced Ground Motion, Vahid Naderyan Jan 2015

Wind Induced Ground Motion, Vahid Naderyan

Electronic Theses and Dissertations

Wind noise is a problem in seismic surveys and can mask the seismic signals at low frequency. Development of practical solutions to this problem must be based on a good understanding of the mechanism of the wind-ground coupling. This thesis investigates the driving pressure and shear stress perturbations on the ground surface associated with wind-induced ground motions. A prediction of the ground displacements spectra from the measured ground properties and predicted pressure and shear stress at the ground surface is developed. Field measurements are conducted at a site in Marks, MS, having a flat terrain and low ambient seismic noise …

Go to article

Biomolecular Folding Rates As Understood From Single-Reaction-Coordinate Langevin Dynamics And Kramers’ Theory, Md Adnan Kabir Jan 2015

Biomolecular Folding Rates As Understood From Single-Reaction-Coordinate Langevin Dynamics And Kramers’ Theory, Md Adnan Kabir

Electronic Theses and Dissertations

Langevin dynamics was used to model the folding and unfolding of simple, hairpin-like biomolecules whose ends are attached to laser-trapped beads, as occurs in optical tweezers experiments. The Langevin process was evolved numerically, using parameters motivated by real experimental systems. Folding trajectories were generated and analyzed to extract the folding rate as a function of the force applied to the beads. The observed rate was compared to the analytical predictions of Kramers' theory. Strong discrepancies were noted. The failure of the Kramers' theory was attributed to the slow dynamical response of the beads, which it does not account for. The …

Go to article

Effect Of Accelerated Global Expansion On Bending Of Light, Mir Emad Aghili Jan 2015

Effect Of Accelerated Global Expansion On Bending Of Light, Mir Emad Aghili

Electronic Theses and Dissertations

No abstract provided.

Go to article

Attentional Bias Toward Pain-Related Pictorial Stimuli Among Individuals With Migraine Following Negative Mood Induction, Michael James Mcdermott Jan 2015

Attentional Bias Toward Pain-Related Pictorial Stimuli Among Individuals With Migraine Following Negative Mood Induction, Michael James Mcdermott

Electronic Theses and Dissertations

Migraine is associated with significant reductions in daily functioning and quality of life and is the 19th largest cause of disability globally. The fear-avoidance model of chronic pain details potential pathways for the development of pain disability and affective distress and provides a platform for understanding the dynamic relationship between psychological factors and migraine. Consistent with the fear-avoidance model, a growing body of research provides support for the role of selective attentional biases toward threat-related stimuli among chronic pain patients. However, the few studies to examine the role of selective attentional biases in migraine demonstrate mixed findings, and the exact …

Go to article

Communication Sciences And Disorders (Csd) Graduate Students' Preparedness To Work With Individuals Who Are Bilingual, Elizabeth M. Harbaugh Jan 2015

Communication Sciences And Disorders (Csd) Graduate Students' Preparedness To Work With Individuals Who Are Bilingual, Elizabeth M. Harbaugh

Honors Theses

This study addresses the overall competence of Communication Sciences and Disorders (CSD) graduate students working with individuals who are bilingual. It examined the different CSD graduate programs in the United States and identified key variables that lead to students' preparedness. The author surveyed 238 individuals, consisting of first and second year graduate students and individuals working in their clinical fellowship from 30 different graduate programs. The data were collected from both Mississippi and the total population and were compared as an example of possible future research pertaining to SLP preparedness needed when working with individuals who are bilingual. The results …

Go to article

Economic Optimization Of An Ethylbenzene Process, Erin L. Dyer Jan 2015

Economic Optimization Of An Ethylbenzene Process, Erin L. Dyer

Honors Theses

This report describes the process of optimizing an existing design for a chemical plant that produces the chemical intermediate ethylbenzene. For an engineer, economic optimization involves manipulating the design variables of a chemical process in order to improve the economic outcome of the project. In this case, the objective of the optimization was to maximize the net present value of the ethylbenzene plant. After analyzing the net present value of the existing design, the team conducted subsequent analyses on the operation of the process, adjusting variables such as temperature, pressure, and flow rate in order to minimize the costs of …

Go to article

Pro-Aromatic Dye Components For Dye-Sensitized Solar Cells: Thienothiophene And Indolizine, George A. Puneky Jan 2015

Pro-Aromatic Dye Components For Dye-Sensitized Solar Cells: Thienothiophene And Indolizine, George A. Puneky

Honors Theses

Four D-π-A dyes based on a 3,4-thienothiophene Ï€-bridge were synthesized for use in dye-sensitized solar cells (DSCs). The pro-aromatic building block 3,4-thienothiophene has been reported to stabilize dye excited-state oxidation potentials. This lowering of excited-state energy levels permits for increased absorption into the near-infrared (NIR) region using relatively low molecular weight dyes. Strong donor functionality based on triaryl- and diarylamines are employed in the dye designs to raise both the ground and excited-state oxidation potentials to values capable of generating DSC devices with good open-circuit voltages. Solubility, aggregation, and TiO2 surface protection were addressed by examining an ethylhexyl alkyl chain …

Go to article

First Prev Next Last