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Articles 1 - 30 of 446
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Beliefs, Practices, And Preservice Teachers: A Case Study, Janie Riddle Goodman
Beliefs, Practices, And Preservice Teachers: A Case Study, Janie Riddle Goodman
Theses and Dissertations
Existing in the chronology of content area literacy instruction is a convincing body of research that supports the role of strategic learning in students’ literacy development. However, much of what is known about teaching reading comprehension strategies is not part of the instruction found in many secondary classrooms. Even though studies have shown how students benefit from using comprehension strategies, the instructional necessities for teaching those strategies are not part of many secondary teachers’ practices. Additionally, the historical focus on literacy practices and strategies is shifting towards attention on the critical role of the disciplines in secondary literacy and the …
Mental Disorders, Mental Health Problems, And Treatment Among Army Recruiters And Recruiting Candidates, 2011-2013: An Examination Of Current Rates In The Recruiting Population, Chadwick Karl Knight
Mental Disorders, Mental Health Problems, And Treatment Among Army Recruiters And Recruiting Candidates, 2011-2013: An Examination Of Current Rates In The Recruiting Population, Chadwick Karl Knight
Theses and Dissertations
Purpose: This study sought to determine the prevalence and severity of mental health disorders (MHDs) and/or mental health problems (MHPs) and types of treatments received among soldiers who have or will serve as recruiters. Research Design and Methods: Data were collected between October 2011 to July 2013 from active duty soldiers (N=2,783) attending courses on Fort Jackson at the U.S. Army’s Recruiting and Retention School (RRS). Students consisted of regular active duty soldiers and activated Guard/Reservist that were either recruiters or recruiting candidates. The medical records of participating recruiters and recruiting candidates were reviewed for the prevalence of MHDs and …
Culturally Relevant Teaching: A Case Study On Teaching Statistics In The High School Setting, Lashaune Natae Smith
Culturally Relevant Teaching: A Case Study On Teaching Statistics In The High School Setting, Lashaune Natae Smith
Theses and Dissertations
Public school enrollment is increasing for African American, Hispanic, Asian/Pacific Islander, and American Indian/Alaskan Native students. However, minority and immigrant children tend to perform lower academically than White, middle-class students. Hence, there is a growing need to reform pedagogical practices for underachieving student populations to have improved chances for school success. Culturally relevant teaching is an effective approach to addressing the social and academic needs of minority students. The purpose of this study was to examine culturally relevant teaching in high school statistics classrooms of predominantly African American students. Using a qualitative case study research design, this study examined two …
A Legal Analysis Of Court Cases And Administrative Investigations Related To Violations Of The Clery Act: Getting Good From The Bad And The Ugly, Tiffany Nichole Richardson
A Legal Analysis Of Court Cases And Administrative Investigations Related To Violations Of The Clery Act: Getting Good From The Bad And The Ugly, Tiffany Nichole Richardson
Theses and Dissertations
College brochures paint pictures of beautiful campuses, diverse student populations, renowned professors, and the best educational programs. What colleges never include in those brochures are the ugly crime statistics. In 2012, higher education institutions reported 41,708 liquor arrests, 20,486 burglaries, 4,837 forcible sex offenses, 951 hate crimes, and 31 murders. The reporting requirement, along with other regulations, has been required of institutions of higher education since 1990 under the Jeanne Clery Disclosure of Campus Security Policy and Campus Crime Statistics Act, yet so many colleges and universities are facing lawsuits, investigations, settlements, and fines for failing to comply. This legal …
Metformin Arrests Growth And Induces Apoptosis Of Neuroblastoma Cells, Nadia Al-Sammarraie
Metformin Arrests Growth And Induces Apoptosis Of Neuroblastoma Cells, Nadia Al-Sammarraie
Theses and Dissertations
Neuroblastoma is one of the most common solid neoplasms in children, which affects sympathetic neurons with a wide range of genetic abnormalities, especially MYCN amplification, a molecular marker of poor prognosis. Despite advance therapy, still the mortality rate for advance disease is high with frequent relapse and resistance to cytotoxic therapy with evidence of p53 mutation. Metformin, an oral hypoglycemic medication, is a relatively safe and cost effective drug with wide clinical applications, mainly for treatment of Type 2 diabetes. Recent studies have showed promising anticancer effect of metformin on various cancer types, especially on p53 mutant cells. In our …
A Theory Of Reward Stability, Justice Evaluations And Group Cooperation, Hyomin Park
A Theory Of Reward Stability, Justice Evaluations And Group Cooperation, Hyomin Park
Theses and Dissertations
The objective of this dissertation is to introduce a theory of the stability of rewards, justice evaluations and group cooperation with the results from three empirical tests of the theory. According to justice theory, rewards from exchange relations produce justice evaluations among individuals, leading to emotional and behavioral reactions. Specifically, unjust rewards cause lower levels of justice evaluations, positive emotions, and cooperative behaviors. Prospect theory and research on negativity bias posit the asymmetry between negative and positive events: negative events have a stronger effect than the same size of positive events on individuals’ perception. Combining the previous arguments, the theory …
Thermal Ecology And Physiology Of An Intertidal Predator-Prey System: Pisaster Ochraceus And Mytilus Californianus, Cristian J. Monaco
Thermal Ecology And Physiology Of An Intertidal Predator-Prey System: Pisaster Ochraceus And Mytilus Californianus, Cristian J. Monaco
Theses and Dissertations
Untangling natural systems’ complexity requires understanding the mechanisms responsible for organisms’ responses to environmental change. Recently, significant advances have been made by recognizing the relevance of direct and indirect effects, which take place when multiple biotic and abiotic factors influence each other. I examined potential direct effects of environmental variables on a predator-prey interaction, as well as potential indirect effects of these variables on the interaction itself. I placed emphasis on behavioral and physiological adaptations, which would potentially contribute/modify these effects. My study system was comprised of a rocky intertidal keystone predator, the sea star Pisaster ochraceus, and its main …
Automated Scratchpad Mapping And Allocation For Embedded Processors, Yang Gao
Automated Scratchpad Mapping And Allocation For Embedded Processors, Yang Gao
Theses and Dissertations
Embedded system-on-chip processors such as the Texas Instruments C66 DSP and the IBM Cell provide the programmer with a software controlled on-chip memory to supplement a traditional but simple two-level cache. By decomposing data sets and their corresponding workload into small subsets that fit within this on-chip memory, the processor can potentially achieve equivalent or better performance, power efficiency, and area efficiency than with its sophisticated cache. However, program controlled on chip memory requires a shift in the responsibility for management and allocation from the hardware to the programmer. Specifically, this requires the explicit mapping of program arrays to specific …
Essays On Battle Clusters In Internal Armed Conflicts And Insurgencies: Concept, Causes And Consequences, Chifeng Liu
Essays On Battle Clusters In Internal Armed Conflicts And Insurgencies: Concept, Causes And Consequences, Chifeng Liu
Theses and Dissertations
With the purpose to re-conceptualize the intensity of internal armed conflicts, I argue that the characteristics such as location, scale and duration of “major battlefields,” i.e. the spatio-temporal clusters of combat events are important in the evaluation of impact of modern civil wars and insurgencies. I start with elaborating and constructing a new concept of conflict magnitude with battle clusters using up-to-date geo-referenced data and spatial statistic methods. In the second article, I first explain the location and duration of major battlefields. The findings indicate that an area with multiple non-state armed groups (NSAGs) is more likely to become main …
Ferric Reductases And Transporters That Contribute To Mitochondrial Iron Homeostasis, Anshika Jain
Ferric Reductases And Transporters That Contribute To Mitochondrial Iron Homeostasis, Anshika Jain
Theses and Dissertations
Iron (Fe) is the fourth most abundant element in the Earth’s crust, yet the availability of Fe to plants is often limited. This is because in most soil types, Fe precipitates as ferric-oxyhydroxy complexes, making it unavailable for uptake by plants. While the mechanisms involved in Fe uptake from the soil are relatively well understood, the mechanisms involved in its further distribution to the aerial portion of the plant and to subcellular compartments are not fully understood. During Fe deprivation, plants up-regulate root Fe acquisition machinery. How plants sense Fe deprivation and tie the Fe status of the plant to …
Life Satisfaction And Academic Performance In Early Adolescents: Evidence For Reciprocal Relationships, Zi Jia Ng
Theses and Dissertations
Student well-being remains a relatively neglected topic despite its intimate link to positive school outcomes. As academic achievement is the yardstick of student success and school accountability, school-based mental health research and practice have focused primarily on the assessment and treatment of learning and behavioral problems. This shortterm longitudinal study sought to establish the role of student subjective well-being in academic achievement. Based on the engine model of well-being (Jayawickreme, Forgeard, & Seligman, 2012), the study focused on life satisfaction as a process variable and academic performance as an outcome variable. Using two waves (five months apart) of data, the …
Influence Of Defects In Epitaxial Graphene Towards Material Growth And Device Performances, Shamaita Shithi Shetu
Influence Of Defects In Epitaxial Graphene Towards Material Growth And Device Performances, Shamaita Shithi Shetu
Theses and Dissertations
Since its invention in 2004, Graphene, a two dimensional array of SP2 bonded carbon atoms has received significant interest by the scientific community due to its unique electrical, optical and mechanical properties. A promising route to the synthesis of large-area graphene, is epitaxial graphene formed by sublimation of silicon atoms from Silicon carbide at elevated temperatures (>1200oC). Although the electronic and mechanical properties of graphene with perfect atomic lattice are outstanding, the structural defects, which may appear during graphene growth, can influence the growth mechanism and material properties. However, deviations from perfection, i.e. introducing dopants in semiconductors often considered …
Surface Modification Of Nanoplatelets In Polymer Nanocomposites, Shailesh K. Shori
Surface Modification Of Nanoplatelets In Polymer Nanocomposites, Shailesh K. Shori
Theses and Dissertations
In polymer nanocomposites (PNCs), it is very important that the nanofiller (typically an inorganic) is well-dispersed in an organic polymer matrix. Optimal compatibility results in end-use products such as packaging materials with enhanced properties. In practice, however, this is challenging to achieve because “ideal” dispersions require the complete uniform separation, termed exfoliation, of the nanofiller within the matrix. As a result, different nanofillers including calcium niobate (CN) and montmorillonite (MMT) are first studied for their ability to exfoliate in aqueous suspensions by measuring the organic cation uptake. The cation exchange capacity, or CEC, determined that CN needs further work before …
Exploration Of Implicit Bias On Multidisciplinary Team Members When Referring African American Students For Special Education Services, Twana Romona Fletcher
Exploration Of Implicit Bias On Multidisciplinary Team Members When Referring African American Students For Special Education Services, Twana Romona Fletcher
Theses and Dissertations
The disproportionality or overrepresentation of African American students in special education is a longstanding problem that continues to be prevalent today. There are numerous reasons why this phenomenon continues to persist including but not limited to implicit bias among multidisciplinary team members (MDT). One function of the MDT is to decide if a student needs to be referred for special education services. Therefore, the purpose of this study was to examine the decision making processes of the MDT members to determine if implicit bias impacted their decision to refer an African American student for special education services. This qualitative study …
Quality Improvement Project: A Comparison Of Daily Routine Chest Radiography Versus Clinically-Indicated Chest Radiography In Preventing Ventilator-Associated Pneumonia In Adult Icu Patients On Ventilators: An Evidenced Based Practice Project, Kimberly Mckenney
Theses and Dissertations
Ventilator-associated pneumonia is one of the critical complications identified by a chest x-ray (CXR). However, there is a controversy about the use of CXRs. Overuse of the CXR has also identified concern among the ICU patient population. The purpose of this evidenced-based practice project was to determine if there were differences in patient outcomes when receiving daily routine CXRs as compared to clinically-indicated CXRs. Patient outcomes measured were: ICU length of stay, complications while on the ventilator and ICU mortality, number of ventilator days, diagnostic efficacy, therapeutic efficacy, costs, and radiation exposure The author identified 30 articles in the search …
Grand Prix: A Trainer's Guide To Show Ring Success, Lauren Rebecca Allen
Grand Prix: A Trainer's Guide To Show Ring Success, Lauren Rebecca Allen
Theses and Dissertations
This is a memoir of my experiences as a horse lover and professional horse trainer, and the startling parallels I discovered in the Los Angeles equestrian and entertainment industries. Both worlds revolve around commodifying something that is rooted in beauty but somehow gets bruised in the process of spinning art into business. I found that my taste for romance and adventure spurred me to new heights and simultaneously crashed against reality. In pursuit of the big prizes, I was willing to slowly sell off the things I cared about most to get what I wanted, until I woke up to …
The Cardio-Protective Effects Of Substance P In Both Ischemia/Reperfusion And And Short-Term Hypoxia Rat Models, Shaiban Jubair
The Cardio-Protective Effects Of Substance P In Both Ischemia/Reperfusion And And Short-Term Hypoxia Rat Models, Shaiban Jubair
Theses and Dissertations
Substance P, a member of the tachykinin family, is found primarily in sensory nerves. In the heart, substance P-containing nerve fibers surround coronary vessels, making them ideally positioned to sense changes in coronary pressure and/or flow. Recent studies have identified substance P as being protective acutely following ischemia-reperfusion due to its ability to induce coronary blood vessel vasodilation. In addition, studies conducted on non-cardiac tissue have reported substance P to be protective against cell death through a mechanism involving activation of anti-apoptotic AKT pathway. However, the possibility of substance P being similarly cardioprotective has not been reported. Accordingly, the purpose …
Measurement Of Polarization Observables PZ, PSZ, And PCZ In Double-Pion Photoproduction Off The Proton, Yuqing Mao
Measurement Of Polarization Observables PZ, PSZ, And PCZ In Double-Pion Photoproduction Off The Proton, Yuqing Mao
Theses and Dissertations
Meson production from excited nucleons is important in the study of baryon resonances and pion photoproduction is attracting much attention. To date a rather large amount of unpolarized cross-section measurements have been reported for both single- and double-pion photoproduction. However, polarization observables provide complementary information as they probe different combinations of transition amplitudes. The database for polarization observables remains quite sparse. Double-pion photoproduction have been studied in Hall B at Jefferson Lab with linearly polarized tagged photon beams incident on longitudinally polarized protons. The experiment covered center-of-mass energies between 1.4 GeV and 2.3 GeV. The target was a FROzen Spin …
Semiparametric Regression Analysis Of Bivariate Interval-Censored Data, Naichen Wang
Semiparametric Regression Analysis Of Bivariate Interval-Censored Data, Naichen Wang
Theses and Dissertations
Survival analysis is a long-lasting and popular research area and has numerous applications in all fields such as social science, engineering, economics, industry, and public health. Interval-censored data are a special type of survival data, in which the survival time of interest is never exactly observed but is known to fall within some observed interval. Interval-censored data arise commonly in real-life studies, in which subjects are examined at periodical or irregular follow-up visits. In this dissertation, we develop efficient statistical approaches for regression analysis of bivariate intervalcensored data, in which the two survival times of interest are correlated and both …
Virtual High Schools Versus Brick And Mortar High Schools: An Analysis Of Graduation Rates For Low Socio-Economic Students In South Carolina, Alice Denise Montgomery
Virtual High Schools Versus Brick And Mortar High Schools: An Analysis Of Graduation Rates For Low Socio-Economic Students In South Carolina, Alice Denise Montgomery
Theses and Dissertations
The No Child Left Behind Act (NCLB) in 2001 was designed to ensure that all students are receiving an appropriate education. All states were mandated to implement state-wide assessments to monitor student achievement. With the identification of student needs that came from the results of state-wide assessments, leaders at both the state and district levels began to develop programs to address these needs. The virtual high school is one of the alternative settings for education that came out of this movement. Full-time virtual high schools have a growing enrollment every year. However, the progress these schools are making in the …
Science Fairs Before Sputnik: Adolescent Scientific Culture In Contemporary America, Sarah Michel Scripps
Science Fairs Before Sputnik: Adolescent Scientific Culture In Contemporary America, Sarah Michel Scripps
Theses and Dissertations
"Science Fairs before Sputnik: Adolescent Scientific Culture in Contemporary America" traces the formation and evolution of science fairs in America, focusing on the ways in which adolescents established communities of practice by engaging in these competitions. Over the course of the twentieth century, generations of American children conducted their first experiments by crafting science fair projects. The dissertation evaluates this understudied phenomenon against the backdrop of American fascinations and fears of science and evolving notions of adolescence. It argues that science fairs were central to shaping an adolescent scientific culture in the United States during the early to mid twentieth …
Numerical Modeling Of Free Surface Flows Using Depth Averaged And 3d Models, Khaled Mamdouh Mohamed Abdo
Numerical Modeling Of Free Surface Flows Using Depth Averaged And 3d Models, Khaled Mamdouh Mohamed Abdo
Theses and Dissertations
The objectives of the research presented in this dissertation are to develop and apply numerical models to study free surface flows under different boundary conditions, bedform geometry and channel configuration. A 2D depth-averaged model is developed by solving the Saint Venant or the shallow water equations using a finite volume method. An existing 3D model, developed in-house, that solves the Reynoldsaveraged Navier-Stokes equations and conservation equations for suspended sediment and conservative species is adapted for free surface flows by solving the volume of fluid (VOF) equation using a compressive interface capturing scheme for arbitrary meshes, CICSAM. The depth-averaged or shallow …
Quantifying Individual Losses In A Direct Methanol Fuel Cell, Jennifer Rae Ruffing
Quantifying Individual Losses In A Direct Methanol Fuel Cell, Jennifer Rae Ruffing
Theses and Dissertations
The performance of a direct methanol fuel cell (DMFC) is complicated due to the complex interactions of kinetic and transport processes. As a result, changes in one aspect of the cell have consequences in other aspects, which are difficult to elucidate from the full-cell polarization (i.e. voltage vs. current) behavior that fuel cell researchers often use to characterize the performance of their systems. The objective of this work was to develop a strategy to use current and voltage relationships from anode half cells, cathode half-cells, and a hydrogen pump, coupled with methanol crossover data and a mathematical model, to quantify …
Quantitative Comparison Of Time-Frequency Decomposed Gait Emg Signals, L. Patrick Mitchell
Quantitative Comparison Of Time-Frequency Decomposed Gait Emg Signals, L. Patrick Mitchell
Theses and Dissertations
Falls in the senior population represent an immediate threat to both current and future generations’ quality of life. The results of falls can be disastrous, create a long road to recovery, and in many cases result in death. Hypertension represents a difficult-to-quantify condition which is known to contribute to gait and balance dysfunction. Accurate assessment of conditions such as these represents an area of primary investigative need. In order to meet this need, a new experimental setup is developed which combines time-frequency analysis with surface electromyography (sEMG) signals obtained during ambulation. 3-bit pressure data is acquired using a pressure-sensitive mat, …
The Effects Of Multiple Gratitude Interventions Among Informal Caregivers Of Persons With Dementia And Alzheimer's Disease, Cristy Degregory
The Effects Of Multiple Gratitude Interventions Among Informal Caregivers Of Persons With Dementia And Alzheimer's Disease, Cristy Degregory
Theses and Dissertations
The purpose of this group randomized intervention trial was to examine the impact of participation in three telephone-based gratitude interventions on the physical, psychological and social functioning of participants in caregiver support groups who are unpaid family caregivers of persons with dementia and Alzheimer’s disease. Fredrickson’s (2001) Broaden-and-Build Theory informed the investigation of the effect of three gratitude interventions on participants’ levels of gratitude, positive aspects of caregiving, subjective well-being, physical health and mental health. This was a randomized, wait-list controlled study involving informal caregivers involved in support groups. The research questions were: 1.) How does gratitude contribute to subjective …
Functionalized Graphitic Nanoreinforcement For Cement Composites, Nima Zohhadi
Functionalized Graphitic Nanoreinforcement For Cement Composites, Nima Zohhadi
Theses and Dissertations
Physical and mechanical properties of graphitic nanomaterials, in particular multiwalled carbon nanotubes (MWCNTs) and graphene nano-platelets (GNPs) make them promising candidates for nanoreinforcement of cement composites. The two key challenges associated with the incorporation of MWCNTs and GNPs are to attain uniform dispersion and interfacial bonding within the composite matrix. The effects of three main-stream dispersion techniques (namely, ultrasonication, acid-etching, and surfactant-coating) on the mechanical properties and microstructure of MWCNT- and GNP-cement composites were experimentally studied. Compressive strength tests and different characterization techniques including dynamic light scattering, Raman spectroscopy, Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy, and transmission …
Climatic Controls On Organic Matter Decomposition In Boreal Peatlands, Michael J. Philben
Climatic Controls On Organic Matter Decomposition In Boreal Peatlands, Michael J. Philben
Theses and Dissertations
Boreal peatlands currently contain 550 Pg C and are located at high latitudes where mean annual temperatures are expected to increase by as much as 7°C by the end of the century. There is growing concern that warming will stimulate decomposition, transforming peatlands from a sink to a source of atmospheric carbon dioxide and accelerating climate change. A primary goal of this dissertation was to evaluate the effect of climate change on organic matter decomposition in peatlands. This was achieved by developing and employing biochemical tracers to indicate the extent of peat decomposition across a range of naturally occurring climatic …
Methods For Identifying Regions Of Brain Activation Using Fmri Meta-Data, Meredith A. Ray
Methods For Identifying Regions Of Brain Activation Using Fmri Meta-Data, Meredith A. Ray
Theses and Dissertations
Functional neuroimaging is a relatively young discipline within the neurosciences that has led to significant advances in our understanding of the human brain and progress in neuroscientific research related to public health. Accurately identifying activated regions in the brain showing a strong association with an outcome of interest is crucial in terms of disease prediction and prevention. Functional magnetic resonance imaging (fMRI) is the most widely used method for this type of study as it has the ability to measure and identify the location of changes in tissue perfusion, blood oxygenation, and blood volume. In practice, the three-dimensional brain locations …
Product And Consumer Characteristics As Moderators Of Consumer Response To Sustainable Products, Kealy Carter
Product And Consumer Characteristics As Moderators Of Consumer Response To Sustainable Products, Kealy Carter
Theses and Dissertations
This dissertation consists of two essays. In both, product sustainability is broadly focused on the environmental and social performance (Luchs et al. 2010) of a product. The first essay explores the role of firm sustainability reputation in behavioral intentions for sustainable products. Additionally, this essay applies construal level theory (Liberman and Trope 1998; Vallacher and Wegner 1985, 1987) and addresses the situation that exists wherein sales of sustainable products produced by firms founded under sustainability principles are more stable than those produced by traditional firms (Clifford and Martin 2011). The second essay introduces a measure of consumer perceived product sustainability …
The Role Of Lis1 In Adult Mammalian System, Xu Gao
The Role Of Lis1 In Adult Mammalian System, Xu Gao
Theses and Dissertations
Lis1 haploinsufficiency in humans results in a “smooth brain” phenotype called lissencephaly, and also causes severe cognitive and motor impairments and epilepsy. Seizure severity and frequency typically worsens with time; patients often die within the first decade due to seizure-induced aspiration and pneumonia. Various mouse models have been used to examine the role of Lis1 during brain development, and it is clear that Lis1 regulates a microtubule motor, cytoplasmic dynein. Intriguingly, Lis1 expression remains high in adult brains indicating that it plays a role in mature systems. Indeed, our group found that Lis1 and several related proteins regulate dynein-dependent axon …