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Multicomponent Reactions For The Preparation Of Fluorous Taged Pyrimidines And Thiopyrimidines And Their Derivatisation To Obtain Biaryl-Substituted Heterocycles, Bruno Piqani

Graduate Masters Theses

This thesis presents a work in the field of multicomponent reactions (MCRs), one-step condensation between a fluorous tagged aldehyde, β-keto ester and urea derivatives. This process in literature is known as "Biginelli Reaction". This dissertation describes a new Biginelli reaction element, using fluorous component as a limiting agent.

Chapter one is an introduction of MCRs. A brief historical review, key principles as well as applications in different fields such as academic research, synthetic organic chemistry, and medicinal applications are presented.

Chapter two discusses the general features of the Biginelli reaction, microwave, and fluorous chemistry with a distinctive look from the …

Prototype Automated Flow-Through Sensor For Measuring Waterborne Microbial Concentrations Using Bulk Fluorescence, Susan M. Savill

Graduate Masters Theses

Timely and inexpensive monitoring of microbial ecology in the world's water supplies is crucial to the study of environmental and human impact on water quality and the prevention of disease outbreaks. Current technology is lacking in its ability to accurately measure and predict the presence of possible disease pathogens in a timely and cost effective manner. This paper describes the construction and initial testing of an automated prototype water sensor intended to detect fluctuations in microbial density in real-time by using bulk fluorescence of SYBR Gold stained bacteria. The sensor is comprised of off-the-shelf hardware and an in-house designed and …

Algebraic Properties Of Killing Vectors For Lorentz Metrics In Four Dimensions, Jesse W. Hicks

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Four-dimensional space-times with symmetry play a central role in the theory of general relativity. In 1961, in the book Einstein Spaces, A.Z. Petrov gave a complete local classification of four-dimensional space-times based upon their local isometry group, that is, their Lie algebra of Killing vector fields. In this report we discuss algebraic and geometric properties of these Lie algebras. A database of these properties has been computed for the five-dimensional Lie algebras of Killing vectors found in Petrov. As an application of our work, we present dieomorphisms between a few pairs of these Lie algebras of Killing vectors.

Winter 2011 E-Certi Newsletter, Center For Educational Research And Teaching Innovation

CAFE Faculty Newsletters

Hello S&T instructors! Congratulations on finishing another semester. Is it possible to go from dismal teaching evaluations to becoming an award-winning teacher? Find out how Greg Hilmas did it. Also in this issue, we congratulate 50+ award-winning faculty members, hear about why Chem 1 is going to a “buffet” model in the spring, and offer resources for teaching Millennials.

Wsrank: A Method For Web Service Ranking In Cloud Environment, Rong Hu, Wanchun Dou, Xiaoqing Frank Liu, Jianxun Liu

Computer Science Faculty Research & Creative Works

For services that have similar functionalities, if they are published by different cloud platforms, it is a challenge to evaluate them, for satisfying different end users' personal preferences. in view of this challenge, a method for web service ranking, named WSRank, is investigated in cloud environment in this paper. It aims at ranking different Web services published by different cloud platforms, taking advantage of Page Rank principle. at last, a case study and experiment are presented to demonstrate the feasibility of the method. © 2011 IEEE.

Information Flow Security In Cyber-Physical Systems, Thoshitha Gamage, Ravi Akella, Thomas Roth, Bruce Mcmillin

Computer Science Faculty Research & Creative Works

Preserving the confidentiality of sensitive internal actions is a unique challenge in Cyber-Physical Systems (CPSs) due to the inherent external observability of such systems and the tight coupling between their cyber and physical domains. the far-reaching objective of this work is to develop a science of self-obfuscating systems based on the composition of simple building blocks. a model of Nondeducibility composes the building blocks under information flow security properties. to this end, this paper proposes fundamental theories on external observability for basic regular networks and the concept of "event compensation". Copyright © 2011 ACM.

Exploring Caching For Efficient Collection Operations, Swetha Surapaneni, Venkata Krishna Suhas Nerella, Sanjay K. Madria, Thomas Weigert

Computer Science Faculty Research & Creative Works

Many useful programs operate on collection types. Extensive libraries are available in many programming languages, such as the C++ Standard Template Library, which make programming with collections convenient. Extending programming languages to provide collection queries as first class constructs in the language would not only allow programmers to write queries explicitly in their programs but it would also allow compilers to leverage the wealth of experience available from the database domain to optimize such queries. This paper describes an approach to reducing the run time of programs involving explicit collection queries by leveraging a cache to store previously computed results. …

Link Activity Scheduling For Minimum End-To-End Latency In Multihop Wireless Sensor Networks, Maggie X. Cheng, Xuan Gong, Yibo Xu, Lin Cai

Computer Science Faculty Research & Creative Works

End-to-end delay is an important QoS metric in sensor networks as well as any application that involves transferring of small-sized files. in this paper, we address how to minimize the end-to-end delay in a multihop wireless network. End-to-end delay is defined as the total time it takes for a single packet to reach the destination. It is a result of many factors including the length of the routing path and the interference level along the path. in this paper we present a transmission scheduling scheme that minimizes the end-to-end delay along a given route. the link scheduling scheme is based …

"The Course Fit Us": Differentiated Instruction In The College Classroom, Mary Volesky Dosch

Theses and Dissertations

Differentiated instruction is a learner-centered philosophy of teaching based on Tomlinson’s research, but stems from a constructivist belief espoused by Dewey, Piaget, and Vygotsky. Through consideration of three diagnostic areas: readiness, interests, and learning profiles, a teacher differentiates how diverse students access the material (content), how students make sense of the material (process), and how students demonstrate their learning (product).

Differentiated instruction has been used successfully at the elementary, middle, and high school levels showing quantitative improvements for diverse students. A limited number of qualitative studies on differentiated instruction exist at the college level, with even fewer quantitative studies.

The …

Implementation Of A First-Year Seminar: Retention And Student Views Of Advising And Engagement At A Small Midwestern University, Kristi Bitz

Theses and Dissertations

The purpose of this study was to explore student perceptions of a first-year seminar course as well as academic advising and other student engagement activities before and after the implementation of a first-year seminar course at a small Midwestern university. Retention rates prior to and after the implementation of the first-year seminar course were considered and comparisons of retention rates for students who completed the first-year seminar with students who did not complete the course were analyzed.

Research questions included:

1. What were student perceptions with regard to the first-year seminar course?

2. Was there a difference in advising perceptions …

Characterizing Performance Of A Pem Fuel Cell For A Cmet Balloon, Denise A. Mckahn, Whitney Mcmackin

Engineering: Faculty Publications

We present the design of a multi-cell, low temperature PEM fuel cell for controlled meteorological balloons. Critical system design parameters that distinguish this application are the lack of reactant humidification and cooling due to the low power production, high required power mass-density and relatively short flight durations. The cell is supplied with a pressure regulated and dead ended anode, and flow controlled cathode at variable air stoichiometry. The cell is not heated and allowed to operate with unregulated temperature. Our prototype cell was capable of achieving power densities of 43 mW/cm2/cell or 5.4 mW/g. The cell polarization performance of large …

General Anesthetics And The Developing Brain, Tracy A. Stanz

Theses and Dissertations

Millions of children undergo seemingly safe general anesthesia and sedation to facilitate procedures located in surgery, imaging suites, radiology suites, emergency departments, and intensive care units. With appropriate doses and administration, anesthetics are thought to be fully reversible and free from lasting harm. However, those assumptions are being challenged with recent research documenting anesthesia-induced neurotoxicity with subsequent neurological sequelae. A comprehensive literature review will be performed using medical databases including CINAI-IL, Google Scholar, Medline, and PubMed. The information gathered will be presented at the North Dakota Association of Nurse Anesthetists bi-annual meeting in Bismarck, North Dakota and to the anesthesia …

Directional Limits On Persistent Gravitational Waves Using Ligo S5 Science Data, J. Abadie, Marco Cavaglia, For Full List Of Authors, See Publisher's Website.

Physics Faculty Research & Creative Works

The gravitational-wave (GW) sky may include nearby pointlike sources as well as stochastic backgrounds. We perform two directional searches for persistent GWs using data from the LIGO S5 science run: one optimized for pointlike sources and one for arbitrary extended sources. Finding no evidence to support the detection of GWs, we present 90% confidence level (C.L.) upper-limit maps of GW strain power with typical values between 2 - 20 x 10^-50 strain² Hz^-1 and 5 - 35 x 10^-49 strain²Hz^-1sr^-1 for pointlike and extended sources, respectively. The latter result is the …

Leadership Practices That Promote Increased Student Achievement In Secondary Schools, Billy Ray Jones

Dissertations

The purpose of the following study was to determine the degree to which the perceptions of teachers and school level administrators may differ, and the effects of these perceptions on student achievement as measured at the school level by the school’s accountability score reported in the form of the Quality Distribution Index (QDI). This index ranges from 0 to 300 and is used in the state of Mississippi to assign schools to one of seven accountability labels. Schools may be classified as one of the following depending on their QDI score: star, high performing, successful, academic watch, at risk of …

The Relationship Between Special Education Teachers' Perceptions Of Principal Leadership Behaviors And The Achievement Of Students With Disabilities, Margaret Elizabeth Constantino

Dissertations

The purpose of this study is to examine special education teacher perceptions of principals’ instructional leadership behaviors and students’ academic achievement on the Georgia Comprehensive Criterion-Referenced Tests. The researcher sought to determine if a relationship between specific instructional leadership practices in the areas of setting direction, influencing others, and redesigning the organization as performed by the principal and as perceived by their teachers is related to the achievement of special education subgroups in English/Language Arts and Mathematics. Special educators from elementary schools, identified by the principals, were surveyed to measure the extent to which they perceived their principal exhibited specific …

Does Online Course Design Encourage Attrition? Assessing Usability Factors In Learning Management Systems, Lisa Theresa Richardson

Dissertations

Online coursework offers many college students flexibility and increased earning potential that they otherwise may not have due to personal or professional responsibilities and restrictions. Unfortunately, for students with disadvantaged technology backgrounds or disabilities limited accessibility compromises these opportunities for students who already face significant challenges to the completion of their post-secondary education. In the same manner that universal design of physical spaces increases usability of buildings and other facilities for all patrons, universal design of web-based courses could improve retention of course content for all learners.

In a case study based on cognitive load theory and constructivist pedagogy, the …

Comparative Analysis Of Factors Related To College Selection By High Academic Ability Students Attending Mississippi's Public Community Colleges In 2003 And 2011, Randall Eugene Lee

Dissertations

Studies have been conducted about high academic ability students in postsecondary institutions, but rarely has research explored the college choice factors involving high academic ability students who chose to attend a community college. The purpose of this study was to determine the factors related to why high academic ability students chose to attend Mississippi public community colleges. The study also examined the differences in perception of college choice factors among students according to the variables of age, gender, race, full-time or part-time enrollment status, attendance for first-generation students to college, if one or both parents or legal guardians attended the …

The Relationship Between Attitude And Anxiety Toward Teaching Science In Pre-Service Elementary Teachers And The Use Of Science Olympiad Events, Allison Armstrong Downing

Dissertations

The purpose of this study was to examine the relationship between the anxiety and attitudes of pre-service elementary teachers toward teaching science and the use of Science Olympiad events in an elementary science methods course. The participants were 34 pre-service elementary teachers enrolled in the Winter 2010 and Spring 2011 trimesters in the course Science in the Elementary School at a private university in south Mississippi. Attitude toward teaching science was measured using the Revised Science Attitude Scale. Anxiety was measured using the State-Trait Anxiety Inventory (Form Y). Data collection involved participants taking pretests for attitude and state anxiety on …

Effects Of Molecular Architecture On Fluid Ingress Behavior Of Glassy Polymer Networks, Matthew Blaine Jackson

Dissertations

This manuscript demonstrates the synthesis of glassy polymer network isomers to control morphological variations and study solvent ingress behavior independent of chemical affinity. Well-controlled network architectures with varying free volume average hole-sizes have been shown to substantially influence solvent ingress within glassy polymer networks. Bisphenol-A diglycidyl ether (DGEBA), bisphenol-F diglycidyl ether (DGEBF), Triglycidyl p-aminophenol (pAP, MY0510), Triglycidyl maminophenol (mAP, MY0610), and tetraglydicyl-4,4’-diamino-diphenyl methane (TGDDM, MY721) were cured with 3,3’- and 4,4’-diaminodiphenyl sulfone (DDS) at a stoichiometric ratio of 1:1 oxirane to amine active hydrogen to generate a series of network architectures with an average free volume hole-size (V_h) …

Leading Schools To Increased Reading Achievement: An Investigation Into Effective Reading Instruction, Patricia Anne Alford

Dissertations

This study investigated the effectiveness of two models of middle school reading instruction as measured by mean scores of middle school students on a state criterion-referenced test. Two cohorts of students were repeatedly compared over a three year period: students who received reading instruction as a core content class (Intervention A) and students who received reading instruction through content-area courses of math, social studies, science, and language arts (Intervention B). The independent variable was the reading program implemented and the dependent variables were the scale scores on the Reading portion of the CRCT test. A mixed model analysis of variance …

The Relationship Between Teacher Collaboration And Student Achievement, Sandra Reid Ervin

Dissertations

NCLB mandates have placed a strong sense of responsibility on educators to ensure that all students are performing at their optimal academic levels. The collaboration of educators is needed as the accountability for student performances increases. At the school level, collaboration and a focus on instruction influence productivity, morale, teacher retention and ultimately, student achievement. The role of the administrators is to provide a collaborative culture where teachers are empowered to analyze and work together to solve problems. Administrators should provide time and space for the teachers to collaborate.

The purpose of this quantitative study was to ascertain the relationship …

The Investigation Of Asphaltene-Naphithenic Acid And Asphaltene-Surface Interactions, David Tristan Heaps

Dissertations

Asphaltenes represent a ubiquitous problem in the oil industry due to their adverse effects on recovery, production, and processing equipment. These problems have affected oil companies throughout the world, resulting in significant financial losses. In order to expand the existing body of knowledge related to asphaltenes, we have examined how the presence of naphthenic acids contributes to the particle aggregation and sedimentation behavior of asphaltene suspensions as well as how the physics and chemistry of a substrate affect asphaltene adsorption/deposition.

The flocculation of asphaltenes in the presence of naphthenic acids was investigated using dynamic light scattering (DLS), near-infrared spectroscopy (NIR), …

Design Of Covalently Dynamic Films And Coatings: Analysis Of Biocatalyzed Kinetic Behavior In Soft Condensed Matter, Pirro Cipi

Dissertations

Reversibly adjusting surface and bulk properties of materials is advantageous to many applications and will vastly expand current polymer capabilities. A novel strategy was developed to render materials capable of “smart” surface and bulk properties with the aid of embedded biocatalyst and latent functional groups that are selectively activated in the presence of biocatalyst to undergo chemical transformation. The research presented herein focused on systematically characterizing the activity of lipase catalysts embedded in poly (alkyl methacrylate)s simultaneously with functionalized components, either as diffusing within the polymeric matrix or tethered to the matrix. Lipase activity, ester forming (synthetic) or ester breaking …

Thermal Correction To The Molar Polarizability Of A Boltzmann Gas, Ulrich D. Jentschura, Mariusz Puchalski, Peter J. Mohr

Physics Faculty Research & Creative Works

Metrology in atomic physics has been crucial for a number of advanced determinations of fundamental constants. In addition to very precise frequency measurements, the molar polarizability of an atomic gas has recently also been measured very accurately. Part of the motivation for the measurements is due to ongoing efforts to redefine the International System of Units (SI), for which an accurate value of the Boltzmann constant is needed. Here we calculate the dominant shift of the molar polarizability in an atomic gas due to thermal effects. It is given by the relativistic correction to the dipole interaction, which emerges when …

Synthesis And Characterization Of Acceptor: Donor Block Copolymers For Organic Photovoltaics, Brandon Cory Achord

Dissertations

Mankind needs sources of clean power. Photovoltaic (PV) cells, in use since 1839, have proven reliable and practical for certain applications. PV cell efficiency has changed over the years from 1-2% to ultra-high efficiency cells operating at efficiencies greater than 40%. Organic photovoltaics are a potential transformative technology platform. The potential for cell use, efficiency and cost are all parts of the research and development focus at the time this document was written. This research was initiated with a focus on the synthesis and understanding of the variables effecting acceptor-donor block copolymer. The self-assembled morphology resulting from varying volume ratios …

Establishing Construct Validity Of The Biology I Subject Area Testing Program In Mississippi, Christy Michelle Hollis Philippoff

Dissertations

Science education has undergone many revisions since it was permanently embedded in the country's educational curriculum at the end of the 19th century. Some of these revisions occurred as a direct result of the No Child Left Behind Act (NCLB). This legislation placed more accountability on schools than ever before by requiring that all students pass a series of standardized tests (USDE, 2010). High schools in Mississippi require four areas of standardized testing: English II, Algebra I, U.S. History, and Biology I (Wroten, 2008). The focus of this study is the Biology I Subject Area Test.

In an effort to …

Physical And Electrical Properties Of Trimetallic Nitride Template Endohedral Metallofullerenes And Their Polymer Nanocomposites, Hanaa Mohammed Ahmed

Dissertations

The main objective of this study was characterization of pure metallic nitride fullerene, MNF, and MNF containing polymers to evaluate these materials as suitable devices for tunable applications. Polymer-fullerene nanocomposites consisting of linear polyurethane (PU) segments crosslinked via polyhydroxylated fullerenes (C₆₀ and Sc₃N@C₈₀, a metallic nitride fullerene) were prepared and characterized for their mechanical and dielectric properties using dynamic mechanical analysis (DMA) and broadband dielectric spectroscopic techniques. Polyhydroxylated fullerenes C₆₀(OH)₂₉ and Sc₃N@C₈₀(OH)₁₈ were synthesized in a high yield through a solid-state high sheer ball-milling procedure and were …

A Quantitative Study Of Learning In The School Cafeteria Using Educational Placemats, Keshia Lasha Gaines

Dissertations

This study investigated if there was a difference in student achievement after participants were exposed to educational placemats in a school cafeteria for four days each (four different placemats). Also, the student’s gender and ability grouping was considered in relation to achievement. This study included 49 ability grouped third grade students in an elementary school in south Mississippi. Students were pre-tested with researcher-made math instruments before the educational placemats were introduced and post-tested afterwards. For research purposes, some placemats served as a control and did not relate to the pre-test and post-test content. Statistical measurements of the differences were derived …

The Effects Of Simplified Schema-Based Instruction On Elementary Students' Mathematical Word Problem Solving Performance, Houbin Lewis Fang

Dissertations

This study is an evidence-based mathematical intervention in word problem solving for elementary students. One of the purposes of teaching mathematics is to help students apply mathematics to real life situations. As we know, teaching word problem solving is a very suitable format for this purpose. Schema-based instruction (SBI) is one of the most supported methods for teaching word problem solving. In the current literature, there are four steps in SBI: identifying the problem type, applying corresponding method, determining an operation, and solving the problem. The problem with the current SBI is that there are no agreed-upon definitions for word …

Causal Attributions Of Nontraditional Students In A Developmental Mathematics Course At A Two-Year College, Jacob Dasinger

Dissertations

The purpose of this study was to determine if a relationship existed between exam grades and students' causal attributions of their grades in a developmental mathematics course at a community college. Also investigated were differences in causal attributions of grades between Traditional and Nontraditional students. In addition, among Nontraditional students, differences based on gender were examined. The sample consisted of 331 completed questionnaires from 24 sections at a southern community college in the Spring 2010 semester.

The instrument used was a self-report questionnaire consisting of four parts: (a) demographic data section; (b) seven questions to determine students' classification; (c) short …