Digital Commons Network^™

A First Year Program Evaluation Of Language Essentials For Teachers Of Reading And Spelling: The Effect On Student Achievement And Teacher Perception, Danielle C. Vogelsang

Dissertations

An indicator of student achievement is the ability to read. The National Institute of Child Health and Human Development (2000) stated that reading comprehension is critically important to the development of children’s reading skills and their ability to obtain an education. The ability to read was found to be both necessary and crucial for academic success. With the adoption of No Child Left Behind, national concern about the quality of our schools and the achievement of all students was as high as it has ever been. The primary purposes of this study were to (a) investigate the impact of the …

Processing Techniques For Partial Tree-Pattern Queries On Xml Data, Pawel Placek

Dissertations

In recent years, eXtensible Markup Language (XML) has become a de facto standard for exporting and exchanging data on the Web. XML structures data as trees. Querying capabilities are provided through patterns matched against the XML trees. Research on the processing of XML queries has focused mainly on tree-pattern queries. Tree-pattern queries are not appropriate for querying XML data sources whose structure is not fully known to the user, or for querying multiple data sources which structure information differently. Recently, a class of queries, called Partial Tree-Pattern Queries (PTPQs) was identified. A central feature of PTPQs is that the structure …

Practical Localized Waves Generation, Mohamed Ahmed Salem

Dissertations

Since the early works on localized waves (LW), extensive results were published on this important subject, from both the theoretical and the experimental points of view. Nevertheless, those experimental techniques of LW generation suffer from several shortcomings. A major one is that only pulse peaks were accredited. Either the full profile of the generated pulse was not reported, or it was not closely matching the theoretical profile. Additionally, low resolutions of the generated LWs were reported in the acoustic X-Waves. The conductors of the experiment attributed this effect to the limited bandwidth of the excitation elements.

The interest in the …

In-Group / Out-Group Dynamics And Effectiveness In Partially Distributed Teams, Faina Privman

Dissertations

When organizations collaborate they often do so using partially distributed teams (PDTs). In a Partially Distributed Team there exist at least two distinct sub-groups. In addition, at least one of the sub-groups has two or more members that are geographically co-located. Co-located members can meet face to face; chat in the hallway; have lunch together; and otherwise socialize with one another. On the other hand, remote members must rely on technology to communicate and work together. This distinct characteristic of partially distributed teams makes them especially susceptible to the In-Group / Out Group dynamic (Huang and Ocker, 2006). This dynamic …

Electrohydrodynamic Manipulation Of Multiphase Fluids, Sai C. Nudurupati

Dissertations

In microfluidic devices, the fluid can be manipulated either as continuous streams or droplets. The latter is particularly attractive as individual droplets can not only move but also split and fuse, thus offer a greater flexibility in applications such as a laboratory-on- a-chip. In this thesis, a technique is developed that uses an externally applied electric field for manipulating and removing particles trapped on the surface of a drop. The drop is assumed to be immersed in another liquid with which it is immiscible, and the electric field is generated by placing electrodes on the sides of the microdevice. Both …

High Resolution Solar Observations From First Principles To Applications, Angelo P. Verdoni

Dissertations

The expression "high-resolution observations" in Solar Physics refers to the spatial, temporal and spectral domains in their entirety. High-resolution observations of solar fine structure are a necessity to answer many of the intriguing questions related to solar activity. However, a researcher building instruments for high-resolution observations has to cope with the fact that these three domains often have diametrically opposed boundary conditions. Many factors have to be considered in the design of a successful instrument. Modern post-focus instruments are more closely linked with the solar telescopes that they serve than in past. In principle, the quest for high-resolution observations already …

Design Development And Evaluation Of Collario, A Group Support System For Collaborative Scenario Creation, Xiang Yao

Dissertations

In the fields of Emergency Management and Business Continuity Planning, scenarios are a widely used tool for planning, training and knowledge sharing purposes. The ability to create and discuss emergency scenarios in virtual teams can lead to many potential applications, such as discussing emergency scenarios by world-wide experts, conducting on-line exercises, and creating Communities of Practices. Existing scenario creation systems, like NxMsel provided by FEMA, allow distributed groups to create scenarios together. However, collaborative support in these systems is generally limited.

This dissertation explores an innovative solution to provide various types of collaboration support around a knowledge structure and uses …

Reduced Order Models For Fluid-Structure Interaction Systems By Mixed Finite Element Formulation, Ye Yang

Dissertations

In this work, mixed finite element formulations are introduced for acoustoelastic fluid- structure interaction (FSI) systems. For acoustic fluid, in addition to displacement- pressure (u/p) mixed formulation, a three-field formulation, namely, displacement-pressure-vorticity moment formulation (u - p -Λ) is employed to eliminate some zero frequencies. This formulation is introduced in order to compute the coupled frequencies without the contamination of nonphysical spurious non-zero frequencies. Furthermore, gravitational forces are introduced to include the coupled sloshing mode. In addition, u/p mixed formulation is the first time employed in solid. The numerical examples will demonstrate that the mixed formulations are capable of predicted …

Carbon Nanotube Electronic Structures As Anti-Corrosion Coatings, Sreeya Sreevatsa

Dissertations

A new concept of corrosion prevention is considered in this study. Diode-like and transistor-like structures have been fabricated and analyzed in the study of ionic flow through the resulting potential barriers. The structures were made of functionalized carbon nanotubes. Carbon nanotubes are known for many remarkable properties among which is being chemically inert. Taking advantage of this property, a study of corrosion of steel was undertaken.

In the first case study, successive layers of functionalized carbon nanotubes were deposited to form p-n junctions on steel substrates. It was demonstrated that the corrosion was indeed impeded by the potential barrier formed …

Dynamics Of School Playground Use In Low-Income Neighborhoods : Four Case Studies From Newark, New Jersey, Caryn Schneider Yaacov

Dissertations

Physical activity during youth contributes to enhanced health and development, and time spent outdoors is a positive correlate of children's physical activity levels. Despite the importance currently attached to building healthy communities, children in the United States from economically disadvantaged urban neighborhoods often lack access to quality open space. In response to insufficient outdoor play options for children in Newark, New Jersey, several existing inner-city elementary school playgrounds have been rebuilt through public-private partnerships involving the municipal government, school district, and nonprofit agencies. This study explores the extent to which neighborhood children use these renovated playgrounds outside of school hours. …

Probing The Complex Magnetic, Electronic And Structural Properties In Correlated Manganese Oxides, Peng Gao

Dissertations

Rare-earth Manganese Oxides (RMnO₃) exhibit two distinct structural phases: the orthorhombic structure and the hexagonal structure. The doped orthorhombic phase exhibits a metal to insulator transition, charge ordering and a strong response of electron transport properties to magnetic fields (colossal magneto-resistance). At low temperatures, this system may also exhibit a finite polarization which couples to external magnetic fields. The hexagonal phase is known to have a large spontaneous polarization at high temperatures which couples to the low temperature magnetic order. These materials are important from the basic point of view of understanding strong electronic correlations and …

Retention, Social Promotion, And Dropout Rates In Mississippi, Jennifer Jo Woodruff

Dissertations

There has been much research in the past two decades about the dropout problem in America. Dropout rates have become a focal point for all public schools in the nation largely due to components of the No Child Left Behind Act and the Dropout Prevention Act that associate monetary rewards to schools that raise the graduation completion rates to 90%. The dropout rates for the United States rank the educational system 17th for graduation completion rates among developed countries. Mississippi has repeatedly earned the title of low-ranking among all states in the nation.

Dropping out of high school is followed …

Topology Control Using Joint Power And Beam-Width Control In Hybrid Rf/Fso Mesh Networks, Osama Awwad

Dissertations

Most wireless networks are deployed strictly in the radio frequency (RF) domain, since RF channels provide natural support for radial broadcast operations. However, the downside of RF channels is that they introduce many limiting externalities that make providing scalable quality of service (QoS) support difficult, if not intractable. These well-known technical challenges include bandwidth scarcity, lack of security, high interference, and high bit error rates.

Faced with such daunting obstacles to QoS, the use of Free Space Optics (FSO) for wireless communications has been proposed in which it has the potential to support higher link data rates compared to present …

Investigating Efforts To Change Educator Attitudes And Teaching Strategies Through Professional Development Focused On The Use Of Backward Design Curriculum And The Principles Of Efficacy: Educator Beliefs And Attitudes, Cynthia R. Allen

Dissertations

A specific assessment for testing readiness skills is lacking for children entering kindergarten. This study investigates the influence of early education programs on school readiness and differences between male and female school readiness screening scores upon students‘ entrance into kindergarten. The study uses 321 school readiness screening scores of students in grades kindergarten through 12th grade from a rural school district with the population of approximately 540 students located in Southwest Missouri. A causal-comparative study was performed on the data compiled from student records. An unpaired t-test using a two-tailed P-value hypothesis test revealed there is a significant difference between …

The Impact Of The Data Team Structure On Collaborative Teams And Student Achievement, Brenda Catherine Rone

Dissertations

The purpose of this study was to determine if implementing a specific collaborative structure would create effective teacher teams that in turn would lead to improved student achievement. An effective team can be viewed as one that uses collaboration to increase its knowledge and improve its practices. The structure that was implemented during this study was the Data Team Process. This process was implemented during the 2007-2008 school year in the Hazelwood School District in St. Louis, Missouri. Three measurement tools were used: the Five Dysfunctions of a Team Survey to assess grade level teacher collaboration, the Hazelwood School District …

Assessing Recall, Conceptualization, And Transfer Capabilities Of Novice Biochemistry Students' Across Learning Style Preferences As Revealed By Self-Explanations, Jacqueline Hilsenbeck-Farjardo

Dissertations

No abstract provided.

Analytical, Computational And Experimental Studies Of Capillary Flow In Complex Geometries, Yongqing Peng

Dissertations

The dynamic processes of capillary flow in complex geometries have been studied analytically, computationally and experimentally in this research. A general approach for modeling the capillary flow in arbitrary irregular geometries with straight axis of symmetry is proposed. Using this approach, the governing equation to describe the dynamic capillary rising motion in capillaries with nonuniform elliptical cross-section is first derived under the assumptions of parabolic distribution of the axial velocity and constant contact angle. The calculation results for the capillary flow in different tubes with irregular wall show that, in comparison with existing models that have been tested, the present …

Photoionization Of Rare Gas Clusters, Huaizhen Zhang

Dissertations

This thesis concentrates on the study of photoionization of van der Waals clusters with different cluster sizes. The goal of the experimental investigation is to understand the electronic structure of van der Waals clusters and the electronic dynamics. These studies are fundamental to understand the interaction between UV-X rays and clusters. The experiments were performed at the Advanced Light Source at Lawrence Berkeley National Laboratory. The experimental method employs angle-resolved time-of-flight photoelectron spectrometry, one of the most powerful methods for probing the electronic structure of atoms, molecules, clusters and solids.

The van der Waals cluster photoionization studies are focused on …

On The Battleground Of Environmental And Competition Policy: The Renewable Electricity Market, Matyas Tamas Meszaros

Dissertations

Renewable energy resources have become increasingly important in the effort to provide energy security and to fight global warming. In the last decade environmental policy has increased the support for renewable electricity. At the same time the electricity sector was often subject to antitrust investigation because of relevant market concentration and market power. This dissertation looks at the renewable electricity market to analyze the effect of environmental policy on competition.

The first chapter provides a short introduction to the regulatory schemes employed in electricity markets. The second chapter analyzes the demand side of the electricity market. The estimations show that …

A Correlational Study: Parental Involvement To Student Achievement In Public Education, Brian Ray Wilson

Dissertations

The significance of parental involvement in their children’s education, according to literature, is unquestionable. In this study the author examined the correlation between student achievement and parental involvement in public education in grade levels two through twelve. The following research will present varied aspects of obstacles that stakeholders must hurdle in an attempt to overcome these barriers in their quest for student success. Additional focus will present quality models of parental involvement as stakeholders attempt to increase and sustain student achievement in this new era of accountability in education.

Developmental Studies Courses And The Success Of Non-Traditional Students At A Major Public University In The Southeast, Charlotte Tagert Matthews

Dissertations

The main purpose of the study was to determine the effect of academic preparation in basic skills classes on the academic performance in subsequent collegelevel classes for non-traditional students. A secondary purpose was to determine if academic preparation in basic skills classes had a long-term effect on academic performance as measured by graduation GPA. A third purpose was to obtain the perspectives of non-traditional students about the effect of academic preparation in basic skills classes on academic performance in subsequent college-level classes.

Methodology included statistical comparisons of grade distributions and GPA using archival data from the Banner student record system, …

Relationships Among Elementary Teachers' Self-Perceptions Of Musical Intelligence, Perceived Value Of Instruction Through Music, And Classroom Instructional Practices, Peggy Jo Hubbard Mccullough

Dissertations

This study was designed to examine educators' perceptions and practices of instruction through music. Using primarily quantitative methods for collection and analysis of data, correlations were sought among the primary variables: elementary teachers' perceptions of the value of instruction through music, their self-reported frequency of instruction through music, and their self-evaluated level of musical intelligence. The hypothesis for this study was that a positive correlation existed between any two of the three variables.

Participants included elementary teachers representing instructional grades one through five from four elementary schools in the southeastern part of the United States. To collect data, a survey …

Middle School Cultures And Student Achievement, Nichel Holland Swindler

Dissertations

School principals have the daunting task of improving their schools and ensuring that student performance increases. Many principals are using their understanding of leadership and culture to transform their schools in order to provide high-performing educational services. The primary purpose of this study was to increase the understanding of those middle school cultures that do in fact, facilitate student performance and achievement.

This study was conducted using information from middle schools in three southeastern states, Georgia, North Carolina, and South Carolina. Teachers completed a 35-question school culture questionnaire designed by Dr. Jerry Valentine. Three research questions were proposed and answered …

Integration Of The Bscs 5e Instructional Method And Technology In An Anatomy And Physiology Lab, Tamilselvi Gopal

Dissertations

This research provides an understanding of how the 5E instructional method combined with educational technology tools can be used in teaching undergraduate college level anatomy and physiology laboratory classes. The 5E instructional model is the exemplary instructional model in teaching biology for high school students. The phases in the 5E learning cycle are Engage, Explore, Explain, Elaborate, and Evaluate. In every step of the learning cycle, the researcher used appropriate technology tools to enhance the teaching and learning processes. The researcher used the Dynamic Instructional Design model to identify the appropriate technology tools for instruction. The topics selected for modification …

Inferring Gene Regulatory Networks From Time Series Microarray Data, Peng Li

Dissertations

The innovations and improvements in high-throughput genomic technologies, such as DNA microarray, make it possible for biologists to simultaneously measure dependencies and regulations among genes on a genome-wide scale and provide us genetic information. An important objective of the functional genomics is to understand the controlling mechanism of the expression of these genes and encode the knowledge into gene regulatory network (GRN). To achieve this, computational and statistical algorithms are especially needed.

Inference of GRN is a very challenging task for computational biologists because the degree of freedom of the parameters is redundant. Various computational approaches have been proposed for …

Effects Of Spritual Well-Being, Religious Coping, And Hardiness On Parenting Behaviors In Low Socioeconomic Status Families, Jane Elizabeth Schenck Varner

Dissertations

Children from low socioeconomic status families are at risk for poor academic, emotional, and behavioral outcomes (Owens & Shaw, 2003). Multiple variables have been associated with resiliency in such families (Walsh, 2003). Spiritual and religious constructs have demonstrated positive effects on quality of life (Perrone, Webb, Wright, Jackson, & Ksiazak, 2006), emotional well-being (Davis, Kerr, & Kurpius, 2003; Calicchia & Graham, 2006), and positive health outcomes (Edmondson et al., 2005) in various populations. Previous research has not examined the relationship between spiritual and religious variables and resiliency, nor has previous research considered how the religious, spiritual, and resiliency variables affect …

Preschoolers' Understanding Of The Relationship Between Perceptual Access And Accuracy Of Knowledge: A Study Of 4- And 5-Year-Olds' Judgments About Model Peers, Kathryn Ann Cooper

Dissertations

No abstract provided.

The Effect Of Music Education On Early Adolescents' Adaptive Skills, Health-Enhancing Behaviors, And Self-Efficacy, Kimberly Ann Root Wilson

Dissertations

The present study investigated the relationship between early adolescents' participation in middle school music programming and behavioral and emotional functioning. Specifically, the association between students' music involvement and the practice of certain healthy behaviors (diet, exercise, seatbelt use, helmet use, and sleep), adaptive skills (interpersonal relations, relationship with parents, self-esteem, and self-reliance) as well as levels of self-efficacy was examined. Based upon previous research demonstrating positive effects of participation in extracurricular activities on the above mentioned constructs, it was hypothesized that similar findings would emerge for those students involved in school-based music programs. The development of health behaviors, adaptive behaviors, …

Traditional And Nontraditional Preservice Elementary Teachers' Perceptions About Mathematics And Mathematics Teaching, Anna Marie Wheeler

Dissertations

In this qualitative dissertation, I examined six nontraditional (based on age) and six traditional preservice elementary teachers' beliefs and changes in beliefs about mathematics and mathematics teaching. These case study participants were enrolled in one of three mathematics content courses designed for preservice elementary teachers at a mid-sized doctoral granting university in the western United States. I selected the twelve participants based on the predetermined criteria of gender (female), age (less than 30 for traditional and at least 30 for nontraditional), mathematics instructor, preservice mathematics course, and group dynamics. Data collection consisted of two approximately 45-minute long interviews per preservice …

Nursing Faculty Experiences And Perceptions Of The Implementation Process To A Learner-Centered Teaching Philosophy: A Case Study, Sharon L. Colley

Dissertations

This study explores nursing faculty's experiences with and perceptions of, their school of nursing's change to a learner-centered teaching philosophy. The primary research goals are to determine faculty perceptions of what learner-centered approaches they are utilizing in their classes, what change conditions they perceive as significant to the implementation process, and how they perceive the overall faculty progress and unity toward the goal of adopting a learner-centered teaching philosophy. Using the theoretical frameworks of Carl Rogers and Donald Ely, a case study approach is used to examine the faculties' use of five key concepts associated with the learner-centered philosophy, as …