Digital Commons Network^™

The Effect Of Functional Fixation In Problem Solving Among Preschool, Second Grade, And Ninth Grade Children, Michael Kenneth Nehring

Dissertations

Functional fixedness is a cognitive function whereby an individual becomes fixated on a given function of an object, which prevents the individual from using the object in an alternative fashion to solve a problem (Duncker, 1935/1945). The current study analyzed the effect of functional fixedness on 36 children from three different age groups, preschool, second grade, and ninth grade. The children were presented with a problem solving activity based on a problem used by German and Defeyter (2000), in which they concluded that young children are immune to the effects of functional fixedness. Research conducted by Chrysikou (2006) indicated using …

High School Graduation Coaches: Supporting At-Risk High School Students, Heather Elise Dunnavant

Dissertations

This study investigated the effectiveness of a new dropout prevention program, Project WALK, which was launched at a low-income high school in Missouri during the 2012–2013 school year. After examining alarming dropout statistics, Washington High School chose 40 students to participate in a new program, Project WALK, which was designed to use graduation coaches to improve at-risk students’ performance. The program’s six graduation coaches formed relationships with at-risk students, monitored student progress, and consistently communicated with parents, teachers, and school administrators about the at-risk students. The researcher, an administrator at the school, gathered quantitative data to measure the effects of …

The Connection Program: An Examination Of One Developmental Education Program, Katherine Grace Craft

Dissertations

Developmental education continues to be an area of concern for higher education institutions. Understanding and developing programs to provide support and increase retention, completion, and success rates for developmental education students is vital to increasing degree attainment in the United States. This study explored one developmental education program at a Midwest community college implemented in 2011. A mixed-methods approach was executed to compare completion and success rates two years prior to implementation and two years following implementation, as well as to obtain qualitative information regarding perceptions of the program. Quantitative data analysis revealed increases in developmental education rates for qualifying …

Impact Of Collaborative Specialization On 5th Grade Student Achievement In A Title I School: Program Evaluation Proposal, Nicole Villaverde

Dissertations

This paper details a complete program evaluation of an elementary school's transition from having mainstream classes to a collaborative specialization model of instruction. My study examines how this model of instruction impacts students' achievement levels and student behavior in a title 1 school. I created the model and in the process of doing my study was required to change it into a model I then defined as Collaborative Specialization. I concluded from my research that this model of instruction was indeed a success because it increased the number of students making learning gains and decreased disciplinary problems.

Online Versus Face-To-Face Biology: A Comparison Of Student Transactional Distance, Approach To Learning, And Knowledge Outcomes, Mary Erin Riggins

Dissertations

Community colleges are among many other institutions increasing course offerings online, but there is still some concern about the quality of online learning. Educator concerns, a lack of empirical evidence on biology courses offered online, and the need for an equal opportunity for education support the need for clarification of the quality of distance education in biology, especially in the community college setting. Student attitudes, approaches to learning, and performance should all be studied in order to formulate a better evaluation of the quality and effectiveness of online courses (Svirko & Mellanby, 2008).

The purpose of this study was to …

Enzyme, Cosolvent, And Substrate Interactions In Ple Hydrolysis Reactions And Evaluation Of The Stability Of An Unnatural Glutathione Analogue, Maureen Elizabeth Smith

Dissertations

Prochiral diester malonates have been hydrolyzed in the presence of Pig Liver Esterase (PLE). Several of the diesters produced the respective half-ester in moderate to high enantioselectivity. A series of cosolvent assays were performed to evaluate the ability of the cosolvent to influence the enantioselective outcome of the hydrolysis reactions. Ethanol produced the largest changes in enantioselectivity of all solvents evaluated. The isoenzymes of PLE were also evaluated and provided very different enantioselective outcomes than that of crude PLE. A series of NMR titrations was performed to explore the interactions between the substrates and ethanol cosolvents.

Improvements to our previously …

A Study Of The Teaching Beliefs Of The Modern Post Secondary Science Instructor And Implications They May Hold For The Future Of Science Education, Michael Charles Howard

Dissertations

It was the purpose of this study to examine the teaching beliefs of community college science instructors and discover whether their teaching beliefs were student oriented or instructor oriented. In addition, this study sought to examine demographic factors and find their relation, if any, to these teaching beliefs, as well as explore topics that may be useful in the future to helping community colleges science instructors’ curricula and beliefs come together and work in unison. To do this, the study built on the foundation laid by Sampson et al., in their creation of the Beliefs about Reformed Science Teaching and …

Spectroscopy And Gas-Phase Binding Of Modified Desferrioxamine B Indicator Displacement-Based Sensors, William Scott Jones

Dissertations

A coupling reaction has been used to successfully synthesize two novel probes utilizing coumarin derivatives as fluorophores. The structure, spectroscopy, and thermodynamics of these probes were characterized and studied. These probes, along with a classical probe using a N-methyl-anthranilate fluorophore, are used to take advantage of the ability of siderophores to coordinate Fe³⁺ ions which is coupled with the attractive phosphorescence properties of lanthanide ions. The use of lanthanide metals to create an indicator displacement assays is a novel application of these probes for the detection of Fe³⁺ ions. The use of Tb³⁺ ions as the indicator …

A Proposed Change Leadership Plan For Bimmer Elementary School, Nicole Villaverde

Dissertations

My paper details a Change Leadership Plan (CLP) for a school with the fictious name of Bimmer Elementary School (BME). My study's purpose is to enhance student learning by collaborating with staff to explore ways to maximize time-on-task (TOT) for all subjects. Currently BME has a reading achievement problem and is using pull-out programs for 4th and 5th grade students that take needed instructional time from core academic programs. I used Wagner's As-Is and To-Be charts (see Appendix A) for BME to identify and present the current status and future desired state of the school's culture, context, conditions, and competencies. …

A Policy Advocacy Dissertation To Increase Transparency And Accountability Through Social Return On Investment Analysis, David F. Lewis

Dissertations

The connection between the funding of public schools and student achievement is complex. Facing dwindling revenue streams, schools and the communities they serve must begin to assess how effectively and efficiently school systems are utilizing federal, state, and local taxpayer resources. As seen in the previous program evaluation and change leadership projects, the Social Return On Investment (SROI) methodology provides a framework that yields a statistically reliable vehicle for doing so that garners trust through transparency. Toward this end, this document advocates for school districts and their boards of education to incorporate the SROI analysis as an essential element of …

Printing Functional Electronic Circuits And Components, Ahmed Tausif Aijazi

Dissertations

The purpose of this study was to investigate the challenges in printing reliable multilayer flexible circuits, devices and components. Gravure was used as the primary printing process for this work, but due to some limitations of gravure, other printing methods were also investigated. At first a systematic study was done to determine the optimum parameters for the gravure printing of sub 50 micron lines. Commercially available silver nanoparticle inks were printed on a lab scale gravure printer, Accupress®. The highest resolution line that was electrically conductive was 36μm wide. The 9μm, 18μm and 27μm lines were printed but were not …

Place-Based Education: An Impetus For Teacher Efficacy, Tamara Chase Coleman

Dissertations

This research investigated professional development in place-based (PB) methodology on the efficacy of science teachers. While teachers are expected to use best practices they do not always implement them due to a lack of efficacy in implementation. A professional development program (PD) was designed to increase confidence among teachers planning to incorporate PB methods. Place-based education (PBE) is recognized as a best-practice among professional educators. PBE includes the selection, design and engagement with science using the geographic place as the content. The literature reports that student learning and teacher efficacy will improve when teachers are prepared effectively in PB practices. …

Magnetic Nickel Nanoparticles: Synthesis, Environmental Lmplications And Potential Role As Drug Carriers, Setare Tahmasebi Nick

Dissertations

The design and synthesis of well-defined magnetic particles with nanoscale dimensions is opening new avenues in understanding their fundamental chemical and physical properties. Our work describes a novel facile procedure for the synthesis of homogenous isotropic and anisotropic magnetic nickel nanoparticles. These nanoparticles were produced using a wet-chemical process and characterized by transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), selected-area electron diffraction (SAED), powder x-ray diffraction (XRD), energy dispersive spectroscopy (EDS) and thermogravimetric analysis (TGA). Magnetic measurements were acquired using a superconducting quantum interference device (SQUID) magnetometer. While there is significant interest in using magnetic nanoparticles for biological …

A Comparison Of Fifth Grade Mathematics Curriculum Materials, Michael E. Starks Sr.

Dissertations

In the USA, the No Child Left Behind Act of 2001 resulted in requirements placed on school districts to show student achievement in mathematics, based on measured adequate yearly progress. This caused school districts to search for standards based programs that improve mathematics learning. A quantitative multi-year study was used to compare the state-assessed achievement levels of 1,695 fifth-grade Midwestern children in the state of Missouri, who learned mathematics from two different curriculum-delivery programs, EveryDay Mathematics and EnVision Mathematics. A 2 by 2 by 8 research design was used through the choice of two elementary schools using EveryDay Mathematics and …

Probing The Unfolding And The Stability Of The Last Four Metal Binding Domains Of Wilson Disease Protein Using Circular Dichroism And Novel Spectroscopic Techniques, Ibtesam Yaseen Alja’Afreh

Dissertations

Wilson disease protein is a copper-transporting P_1B type ATPase. It has large N-terminal copper binding domain which is composed of six homologous sub-domains. Each of these six domains is ~72 residues and connected to one another by linking regions of various lengths. They all possess similar ferrodoxin fold, and metal-binding motif, MXCXXC.

The need of having six metal binding domains and the manner in which they are communicating with each other is not well understood. To better understand how the last four metal binding domains function, I pursued a detailed biophysical characterization of these domains. Using molecular biology I …

An Lntegrated Approach (Remote Sensing, Gls, Engineering, Datamining) For Modeling, Assessing And Mitigating Slope Stability Hazards In Mountainous Environments, Racha El Kadiri

Dissertations

Mountainous areas are quite often subjected to hazards related to their steep relief and intense precipitation events. These hazards (e.g., debris flows, mudflows, rockfalls) pose serious threats to settlements and structures that support transportation, agriculture, tourism, and other economic activities.

This study applies and develops a wide range of methodologies and tools that take advantage of readily available remote-sensing datasets, geographic information system technologies, and artificial intelligence techniques. The developed approaches allow the characterization of both spatial and temporal conditions that controlled mass movement occurrences and use these characteristics to model and mitigate future occurrences. The Jazan area in the …

Lnference On Differences In K Means For Data With Excess Zeros And Detection Limits, Haolai Jiang

Dissertations

Many data have excess zeros or unobservable values falling below detection limit. For example, data on hospitalization costs incurred by members of a health insurance plan will have zeros for the percentage who did not get sick. Benzene exposure measurements on petroleum re nery workers have some exposures fall below the limit of detection. Traditional methods of inference like one-way ANOVA are not appropriate to analyze such data since the point mass at zero violates typical distribution assumptions.

For testing for equality of means of k distributions, we will propose a likelihood ratio test that accounts for excess zeros or …

Modular Monochromatic Colorings, Spectra And Frames In Graphs, Chira Lumduanhom

Dissertations

Abstract attached as separate document.

Tatweer School Principals' Perceptions Of New Authorities Grantedin The Lnitial Steps Of Decentralization, Salah Salih Meemar

Dissertations

In 2011, the Saudi Ministry of Education (MOE) conferred 21 new authorities in addition to the previous 31 to their school principals. A main goal in conferring these authorities was to facilitate decentralization of Saudi school districts. To further facilitate decentralization, 900 schools were selected as Tatweer schools. Tatweer, also known as the King Abdullah Public Education Development Project, is a pilot program designed to match Saudi standards of education to that of other nations. To date, few studies have explored principals’ perceptions of the new authorities. A review of literature revealed just three studies on the topic (see Allheani, …

Lntegration Of Conventional Lithography And Printing Processes As A Key Enabling Technology For Printed And Flexible Sensing Systems, Binu Baby Narakathu

Dissertations

Sensors, which are used ubiquitously in a wide variety of applications, are revolutionizing the already ever-changing world we live in by providing real-time information about our surroundings. This dissertation focuses on the integration of conventional photolithography and printing processes as a key enabling technology for printed and flexible sensing systems.

Initially, an efficient opto-electrochemical sensing system, for the dual detection of heavy metal compounds was successfully developed. A novel microfluidic flow cell, with a reservoir volume of 25 μl, was designed and fabricated using acrylic. An electrochemical sensor with gold (Au) interdigitated electrodes (IDE) on a glass substrate was photolithographically …

Ultrafast Interfacial Electron Transfer Across Molecule-Tio2 Nanocomposites: Towards Solar Cells And Two Photon Absorption, Edwin Mghanga

Dissertations

Interfacial charge transfer (ICT) across the molecule-TiO2 nanoparticle interface has gained enormous research attention for applications in dye sensitized solar cells (DSSC), photo-catalysis, water splitting and nonlinear optics. DSSCs are promising clean alternative energy sources. However, current DSSCs suffer from lower efficiencies and higher cost. Better understanding of the ICT processes in DSSCs can help solve these problems. We have used two strategies to understand ICT in the context of DSSCs. Firstly, we used a computationally validated anchor group, acetylacetonate (acac) to bind molecules to the semiconductor surface and facilitate charge separation. Secondly, we used natural dye sensitizers, …

Teacher And Administrator Perceptions Of The Implementation Of The Teacher Incentive Fund (Tif) Grant In Mississippi Pilot Schools, Albert William Carter

Dissertations

The purpose of this research study was to assess administrators and teachers’ perceptions of the key components of the Mississippi Teacher Incentive Fund (TIF) grant in Mississippi pilot schools. The study examines the difference in perceptions between administrators and teachers. The study also investigated if there was a relationship with the TIF grant and student achievement by comparing the percent of students who scored a minimum of proficient on the MCT2 in TIF schools before and after the grant. Achievement was also examined by comparing percent of proficiency of TIF schools with comparable, non-TIF Mississippi schools.

The participants in the …

Tuning Responsiveness Of Polypeptide Based Block Copolymers For Drug Delivery, Ashley J. Johnson

Dissertations

The goal of this dissertation was to tune the pH response and self-assembled morphologies of amphiphilic polypeptide block copolymers for use as drug delivery vehicles. Poly(L-lysine) and poly(L-glutamtic acid) are responsive, ionizable polypeptides that undergo secondary structure transitions, from α-helix to random coil, whereby the change in conformation of the peptide chain results in changes to the global morphology of a self-assembled system. The main focus of this work was to understand how changes in the polymer composition and the local environment can lead to control over the behavior of the overall system. First, the responsive behavior of poly(L-lysine) block …

Continuous Polymer Reactor Design, David Sujay Kingsley

Dissertations

Twin screw extruders can be used as continuous polymer reactors to process polymers, which are conventionally made through batch reactors. Batch processes have certain undesirable qualities such as improper mixing and the inability to precisely control the reaction, which leads to variation between batches and potential exotherms. The work presented in this dissertation investigates the use of continuous polymer reactor designs to efficiently process renewable sourced thermoplastic polyurethanes (TPU), and prepreg epoxy matrix prepolymers.

The overall goal of this research is to highlight the modularity of twin screw extruders as continuous polymer reactors to synthesize the relevant polymers. Chapter I …

The Self-Directedness, Metacognitive Awareness, Self-Efficacy Beliefs, And Grammatical Competence Of College Students Studying Spanish, Juan Guillermo Loaiza

Dissertations

Differential performance is a frequent issue in formal education in general and in second language education in particular. Three variables that may have an effect on college language learners’ performance were identified in the literature on adult education and second language acquisition, namely, self-directed learning, metacognitive awareness, and self-efficacy beliefs. The relationship among those three predictors as well as their relationship with academic performance (in the form of college learners’ grammatical competence in Spanish) was explored using a multiple regression analysis. The statistical analysis showed that none of those three variables predicted learners’ grammatical competence in Spanish. However, participants’ answers …

Investigation Of Glassy State Molecular Motions In Thermoset Polymers, Jianwei Tu

Dissertations

This dissertation presents the investigation of the glassy state molecular motions in isomeric thermoset epoxies by means of solid-state deuterium (²H) NMR spectroscopy technique. The network structure of crosslinked epoxies was altered through monomer isomerism; specifically, diglycidyl ether of bisphenol A (DGEBA) was cured with isomeric amine curatives, i.e., the meta-substituted diaminodiphenylsulfone (33DDS) and para-substituted diaminodiphenylsulfone (44DDS). The use of structural isomerism provided a path way for altering macroscopic material properties while maintaining identical chemical composition within the crosslinked networks.

The effects of structural isomerism on the glassy state molecular motions were studied using solid-state ²H …

Systemic Transformation For College And Career Readiness And Enhanced Social Return On Investment, David F. Lewis

Dissertations

The transition in motion in the nation and in Florida has the potential to have a short-term adverse impact on high school graduation rates. The transition to more rigorous Florida Standards and their accompanying assessments are expected to promote improved college and career readiness and graduation rates for students in the long term. The disruptive consequences of the transition presents a scenario of short term losses sparking a sense of urgency among educators, parents, students, and the community at-large. This sense of urgency serves as the catalyst for the transformational change initiatives outlined in this document. This Change Leadership Project …

Student Perspectives Of Classroom Assessment, Kyle Hemje

Dissertations

No abstract provided.

Relationships Between Participation In Extracurricular Activities, Act Scores, Gpa, And Attendance In Select Public High Schools In Mississippi, Lance Kelvin Reed

Dissertations

There are contemporary concerns about improving and sustaining positive student outcomes in secondary schools today. In light of student needs and limited time and resources available to address those needs, educational leaders are faced with making difficult decisions about what should and could be offered to students through their schools. In addition to the general curriculum, schools generally offer a variety of extracurricular activities. The purpose of this study is to investigate the relationship between extracurricular participation and select student outcomes. The findings of this study can provide valuable insight to school leaders as they make decisions about how to …

How Do Middle School Core Content Area Teachers In A Title 1 School Use Cooperative Learning In The Context Of High Accountability For Student Proficiency: A Multiple Case Study, Martha Cunigan-Wells

Dissertations

This action research case study describes how content area teachers in a middle school with low reading achievement levels utilize cooperative learning and curriculum integration (with a focus on the integration of literacy skills and thinking skills) in their content area given the current context of accountability for student mastery of tested core content outcomes. The participants were four urban middle school teachers from the core areas of science, social studies, mathematics, and language arts who had varying levels of training and experience with cooperative learning and curriculum integration. Data sources included audio-recorded pre-conferences, video-taped classroom observations, audio-recorded post-conferences, and …