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

Digital Commons Network™

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

Theses and Dissertations

Discipline
Institution
Keyword
Publication Year
File Type

Articles 11281 - 11310 of 19640

Full-Text Articles in Entire DC Network

Aspects Of The Ecology And Management Of Mottled Ducks In Coastal South Carolina, James Claybourne Shipes Dec 2014

Aspects Of The Ecology And Management Of Mottled Ducks In Coastal South Carolina, James Claybourne Shipes

Theses and Dissertations

Mottled ducks (Anas fulvigula) are endemic to Gulf Coastal United States and Mexico. Birds from Florida, Louisiana, and Texas were released in coastal South Carolina from 1975-1983, and banding data suggest an expanding South Carolina population. We radio-marked 116 females in August 2010-2011 in the Ashepoo, Combahee, and Edisto (ACE) Rivers Basin and used radio telemetry to study habitat selection, searched for nests of non-radiomarked females, and conducted indicated breeding pair surveys of mottled ducks at various wetlands. Overall, radiomarked mottled duck females selected managed wetland impoundments, wetlands containing planted corn, and brackish wetlands. Overall nest success of 42 nests …


A Synthetic Approach To The Biflavonoids Chamaejasmine And Isochamaejasmine, Verna B. Baron Dec 2014

A Synthetic Approach To The Biflavonoids Chamaejasmine And Isochamaejasmine, Verna B. Baron

Theses and Dissertations

Biflavonoids form a ubiquitous class of compounds in nature, which are well known for their numerous medicinal benefits. Biflavonoids such as chamaejasmine and isochamaejasmine have been shown to exhibit pharmacological activity such as anitidiabetic, anti-malaria, anti- HIV, anticancer etc. Biflavanones, chamaejasmine and isochamaejasmine are dimers of the flavanone narigenin at the C-3 position, which gives them a rare 3/3" C - C linkage. They are structurally similar in that they both have four stereocenters. The difference between these two compounds is the stereochemistry at the C-2" and C-3". In this study, installation of each of these stereocenters will be targeted …


Impacts Of Feedstock Bark Addition And Centrifugal Filtration On Pyrolysis Oil Properties And Storage Stability, Anandavalli Varadarajan Dec 2014

Impacts Of Feedstock Bark Addition And Centrifugal Filtration On Pyrolysis Oil Properties And Storage Stability, Anandavalli Varadarajan

Theses and Dissertations

The physicochemical properties of pyrolysis oil have been shown to be dependent on feedstock composition. Accelerated aging tests were performed to understand the effects of feedstock, condensate fraction collected, and filtration on the stability of pyrolysis oil. In this study, pyrolysis oil properties critical for downstream upgrading were measured and compared for different feedstock weight ratios of pine clearwood and pine bark. Post-condensation filtration of pyrolysis oil was evaluated using both lab-scale and pilot plant-scale centrifugal filtration with several operational parameters evaluated. The pilot-plant centrifuge can be used as a three-phase separator [light liquid-heavy liquid-solids] or a two-phase clarifier [liquid-solid]. …


Model-Based Autonomic Security Management Of Networked Distributed Systems, Qian Chen Dec 2014

Model-Based Autonomic Security Management Of Networked Distributed Systems, Qian Chen

Theses and Dissertations

This research focuses on the development and validation of an autonomic security management (ASM) framework to proactively protect distributed systems (DSs) from a wide range of cyber assaults with little or no human intervention. Multi-dimensional cyber attack taxonomy was developed to characterize cyber attack methods and tactics against both a Web application (Web-app) and an industrial control system (ICS) by accounting for their impacts on a set of system, network, and security features. Based on this taxonomy, a normal region of system performance is constructed, refined, and used to predict and identify abnormal system behavior with the help of forecasting …


Associative Nitrogen-Fixing Bacteria And Their Potential To Support The Growth Of Bioenergy Grasses On Marginal Lands, Jayani Jeewanthi Wewalwela Dec 2014

Associative Nitrogen-Fixing Bacteria And Their Potential To Support The Growth Of Bioenergy Grasses On Marginal Lands, Jayani Jeewanthi Wewalwela

Theses and Dissertations

Rising demands for both food and energy have lifted up the idea of producing renewable biofuels from bioenergy grasses that can companion with associative N2ixing bacteria. Associative N2ixing bacteria can partially fulfill the N requirements of bioenergy grasses enabling successful application for marginal lands. The overall objective of this study was to measure the potential N2ixation of bacteria associated with three bioenergy grasses, giant miscanthus (Miscanthus x giganteus), switchgrass (Panicum virgatum; ‘Alamo’) and energycane (hybrid of Saccharum spontaneum and S. officinarum; HO 02-147) as well as identifying N2ixing bacteria associated with these energy grasses and applying these isolates to grasses …


Protein-Protein Interaction Profile Of Viral Protein Bicp0 During Bovine Herpesvirus-1 Lytic Infection, Stephanie Elaine Ander Dec 2014

Protein-Protein Interaction Profile Of Viral Protein Bicp0 During Bovine Herpesvirus-1 Lytic Infection, Stephanie Elaine Ander

Theses and Dissertations

Bovine Infected Cell Protein 0 (bICP0) is an immediate-early protein encoded by Bovine Herpesvirus-1 that modulates host immune response, activates transcription for all viral promoters, and causes ubiquitin-dependent degradation of proteins. Presented herein is a bICP0 protein-protein interaction (PPI) profile, consisting of 98 cellular and 15 viral proteins, generated through co-immunoprecipitation of bICP0 and its binding partners. The PPI profile was analyzed computationally to identify potential sites of interaction with bICP0 and any cellular pathways that may be influenced by bICP0. Some interactors fall in conjunction with bICP0’s known roles during infection, and others are consistent with known associations of …


Soundscape Evaluation On Mississippi State University Campus, Yalcin Yildirim Dec 2014

Soundscape Evaluation On Mississippi State University Campus, Yalcin Yildirim

Theses and Dissertations

The term soundscape, used for the first time at the end of 1970s, refers to the sum of the sounds that can be heard and perceived by people in a specific environment. The concept of soundscape has recently received attention in planning and design disciplines. Recent studies on soundscape have shown that the acoustic environment plays an important role for the comfort of site users. Hence, this research investigates how objective measurement of soundscape might be different from subjective perceptions of users in the Mississippi State University Campus as a public open space due to demographic and climatic variations. The …


Determining The Effect Of Auxin Herbicide Concentration And Application Timing On Soybean (Glycine Max) Growth And Yield, Alanna Blaine Scholtes Dec 2014

Determining The Effect Of Auxin Herbicide Concentration And Application Timing On Soybean (Glycine Max) Growth And Yield, Alanna Blaine Scholtes

Theses and Dissertations

Auxin resistant cropping systems will provide producers with an alternative option for weed management, but with this new technology also comes the concern of off target movement of dicamba and/or 2,4-D to susceptible crops. Research was conducted over multiple site years in order to determine the effect of soybean response to different application timings and rates of 2,4-D and dicamba. 2,4-D was applied at 1X (0.56 kg ae/ha), 1/4X, 1/16X, 1/64X, and 1/256X rates, and dicamba was applied in a separate study at 1X (0.56 kg ae/ha), 1/4X, 1/16X, 1/64X, 1/256 and 1/1024X. All rates were applied at the V3 …


Characterization Of Maize Genes In Response To Aspergillus Flavus Infection And Aflatoxin Accumulation, Matthew Constantine Asters Dec 2014

Characterization Of Maize Genes In Response To Aspergillus Flavus Infection And Aflatoxin Accumulation, Matthew Constantine Asters

Theses and Dissertations

Aspergillus flavus is a pathogenic fungus causing maize ear rot disease and producing aflatoxins that are carcinogenic to humans and animals. Characterizing maize host resistance mechanisms and prioritizing candidate resistance genes are important to the development of resistant maize germplasm. This study investigated transcriptomics approaches and statistics methods on the identification of maize host resistance genes. Full-length cDNA libraries were also constructed and evaluated for gene cloning and functional analysis. This study established important sources for functional studies on differentially expressed genes and for identification of allelic gene forms to characterize gene polymorphisms and facilitate the development of DNA markers.


Characterization Of Sediment Microbial Communities And Analysis Of Biogeochemical Responses To Eutrophication In Southeastern Estuaries, Gary Alon Blakeney Dec 2014

Characterization Of Sediment Microbial Communities And Analysis Of Biogeochemical Responses To Eutrophication In Southeastern Estuaries, Gary Alon Blakeney

Theses and Dissertations

Estuaries are valuable economic resources to humans. However, changes in these ecosystems, such as alteration in nutrient availability, can impose eutrophic pressures. Traditionally, estuaries have been monitored through chemical analyses that measure factors such as sediment oxygen demand (SOD) and reduced forms of Fe(II), Mn(II), and H2S. These methods are time consuming and have been proven to be unreliable. This study was conducted to determine if using T-RFLP analysis could be used as a proxy for some of the current methods used to monitor eutrophication. Using SPSS to perform a principle component analysis, it was determined that connections can be …


Computational Methods For Solving Next Generation Sequencing Challenges, Tamer Ali Aldwairi Dec 2014

Computational Methods For Solving Next Generation Sequencing Challenges, Tamer Ali Aldwairi

Theses and Dissertations

In this study we build solutions to three common challenges in the fields of bioinformatics through utilizing statistical methods and developing computational approaches. First, we address a common problem in genome wide association studies, which is linking genotype features within organisms of the same species to their phenotype characteristics. We specifically studied FHA domain genes in Arabidopsis thaliana distributed within Eurasian regions by clustering those plants that share similar genotype characteristics and comparing that to the regions from which they were taken. Second, we also developed a tool for calculating transposable element density within different regions of a genome. The …


Computational Methods On Study Of Differentially Expressed Proteins In Maize Proteomes Associated With Resistance To Aflatoxin Accumulation, Alka Tiwari Dec 2014

Computational Methods On Study Of Differentially Expressed Proteins In Maize Proteomes Associated With Resistance To Aflatoxin Accumulation, Alka Tiwari

Theses and Dissertations

Plant breeders have focused on improving maize resistance to Aspergillus flavus infection and aflatoxin accumulation by breeding with genotypes having the desirable traits. Various maize inbred lines have been developed for the breeding of resistance. Identification of differentially expressed proteins among such maize inbred lines will facilitate the development of gene markers and expedite the breeding process. Computational biology and proteomics approaches on the investigation of differentially expressed proteins were explored in this research. The major research objectives included 1) application of computational methods in homology and comparative modeling to study 3D protein structures and identify single nucleotide polymorphisms (SNPs) …


Effects Of Resveratrol On Post-Thaw Quality Of Stallion Sperm, Kelli Lynn Matheny Dec 2014

Effects Of Resveratrol On Post-Thaw Quality Of Stallion Sperm, Kelli Lynn Matheny

Theses and Dissertations

Current equine sperm cryopreservation methods fail to reliably prevent damages to important cellular structures such as the cell membrane and DNA. The objective of this study was to determine the effects of supplementing a stallion semen extender with 1 or 10 mM resveratrol on post-thaw sperm characteristics. Results showed that sperm death was increased with 10 mM compared to both the control and 1 mM (P < 0.05). DNA fragmentation was increased in the 1 mM treatment compared to the control (P < 0.05). ROS activity was reduced the most in the 10 mM with differences between all groups (P < 0.05). Membrane integrity was not different between groups (P > 0.05). Motility of the control was higher than the treatment groups (P < 0.05). Resveratrol was able to reduce ROS but was unable to preserve motility or viability at the concentrations tested.


Efficacy Of An Experiential, In-School Educational Program For Improving Elementary School Students' Attitudes And Knowledge About The Environment, Leslie M. Burger Dec 2014

Efficacy Of An Experiential, In-School Educational Program For Improving Elementary School Students' Attitudes And Knowledge About The Environment, Leslie M. Burger

Theses and Dissertations

Stagnant science achievement by students, greater demands and stresses on natural resources and environmental systems, and societal disengagement from nature highlight the need for education programs to ameliorate subsequent consequences. One attempt to address science performance and environmental apathy is Youth Environmental Science (YES), an environmental education program initiated in 2011 in a rural, minority-dominated, upper elementary school in Mississippi. The program provides five consecutive days (30 hours) of experiential learning in natural sciences. During 2011-2013, I studied cognitive and affective responses of fourth and fifth grade students to YES participation using a pretest-posttest-delayed posttest design. The influence of demographic …


Epidemiological Study Of The Factors That Influence Mortality And Economics On A Commercial Catfish Farm, Fred L. Cunningham Dec 2014

Epidemiological Study Of The Factors That Influence Mortality And Economics On A Commercial Catfish Farm, Fred L. Cunningham

Theses and Dissertations

A Catfish Management Database (CMD) was developed to analyze data from large commercial catfish farms. The CMD was developed so that data collected by the farm could be used for management of the farm and for identifying some of the risk factors associated with important bacteria diseases. This database was designed to 1) to incorporate production data already being recorded for generating reports for use at weekly managerial meetings focused on feeding rates, feed conversion ratios, mortalities and harvesting events 2) be easily used by a catfish farmer to collect management data in order to analyze production efficiency through a …


Evaluation Of Effectiveness, Reproducibility, And Repeatability Of Using Dentition For Estimating Cattle Age, Timothy F. Best Dec 2014

Evaluation Of Effectiveness, Reproducibility, And Repeatability Of Using Dentition For Estimating Cattle Age, Timothy F. Best

Theses and Dissertations

Study objectives were to determine the effectiveness, reproducibility, and repeatability of dental evaluation for estimating cattle age. Cattle (n = 400) aged 1.5 to 20 yr were evaluated by 3 technicians for estimated age via dentition. A subset (n = 383) was aged again 4 wk later by the same observers. Age estimations were most accurate in YOUNG (< 5 yr old) cattle with at least 95.7% rate of accuracy within 2 yr across all observers and observation events. For MIDDLE (6 to 10 yr old) and OLD (> 10 yr old) cattle, these accuracies were 81.5 and 62.1%, respectively. Reproducibility proved high, with all observers consistently assigning age estimates within 1 yr of one another for more than 9 out of 10 YOUNG animals; all observers agreed on at …


An Approach To Genetic Silencing Of Ricin In Castor (Ricinus Communis L.), Daniel Joseph Barnes Dec 2014

An Approach To Genetic Silencing Of Ricin In Castor (Ricinus Communis L.), Daniel Joseph Barnes

Theses and Dissertations

Castor (Ricinus communis L.) is a high-yielding oilseed crop native to tropical Africa. The seed contains ~60% oil by weight, yielding approximately 1,200 kg of oil per hectare. The oil is composed of ~90% ricinoleic acid, a unique hydroxylatty acid. Its unique composition provides castor oil with distinctive characteristics important for industrial use. Unfortunately, this valuable oilseed has not been widely cultivated in the United States since 1972, due in part to the presence of ricin in the seed. Ricin is a highly toxic lectin found in the endosperm of mature castor seed. This project sought to silence ricin production …


An Examination Of The Predictors Of General Recidivism, Violent Recidivism, And Property Recidivism Among Juvenile Offenders, Megan Suzanne Stubbs-Richardson Dec 2014

An Examination Of The Predictors Of General Recidivism, Violent Recidivism, And Property Recidivism Among Juvenile Offenders, Megan Suzanne Stubbs-Richardson

Theses and Dissertations

Although studies examining juvenile recidivism have focused primarily on violent recidivism, the factors that predict recidivism likely differ by offense type. To examine general, property, and violent recidivism, this study combined individual-level data (i.e., offender and case characteristics) from the Mississippi Youth Court Information Data System (MYCIDS) for the years 2009-2011 and contextual-level data (i.e., county characteristics) from the 2010 U.S. Census and the 2010 Uniform Crime Reports (UCR). Results showed that offender characteristics predicted only general and property recidivism, but case characteristics mattered for all three types (i.e., general, violent, and property recidivism). Contextual characteristics (i.e., the percentage of …


Bounds For The Maximum-Time Stochastic Shortest Path Problem, Anara Bolotbekovna Kozhokanova Dec 2014

Bounds For The Maximum-Time Stochastic Shortest Path Problem, Anara Bolotbekovna Kozhokanova

Theses and Dissertations

A stochastic shortest path problem is an undiscounted infinite-horizon Markov decision process with an absorbing and costree target state, where the objective is to reach the target state while optimizing total expected cost. In almost all cases, the objective in solving a stochastic shortest path problem is to minimize the total expected cost to reach the target state. But in probabilistic model checking, it is also useful to solve a problem where the objective is to maximize the expected cost to reach the target state. This thesis considers the maximum-time stochastic shortest path problem, which is a special case of …


Use Of Natural Antimicrobials To Control Spoilage In Marinara-Type Sauce, Austin R. Abessinio Dec 2014

Use Of Natural Antimicrobials To Control Spoilage In Marinara-Type Sauce, Austin R. Abessinio

Theses and Dissertations

Marinara-type sauces were created using three natural antimicrobials, as well as two combination treatments (natamycin, propionic acid, cultured dextrose, natamycin-propionic acid, and natamycin-cultured dextrose) and two controls (sodium benzoate-potassium sorbate, no preservatives). Samples were subjected to a shelf-life study at 20 C with both non-inoculated sauce and sauces that were either inoculated with Zygosaccharomyces bailii or a cocktail of thermophilic fermentative organisms. Natamycin and Natamycin-propionic acid treatments had fewer log colony counts (CFU/g) of yeast and lactic acid bacteria than the negative control after 42 days of storage and performed as well or better than the positive control throughout the …


Study Of The Mechanisms Of Heat Tolerance In Ivy Geraniums, Mingshu Zhang Dec 2014

Study Of The Mechanisms Of Heat Tolerance In Ivy Geraniums, Mingshu Zhang

Theses and Dissertations

Ivy geranium (Pelargonium peltatum) is a heat susceptible species with its heat tolerance varying among varieties. Reactive oxygen species (ROS) and in-vivo defense systems are related to plant heat damage and heat tolerance. Application of chelated-iron has also been reported to enhance ivy geranium heat tolerance; however, the correlation of ROS, relative enzyme stability, and iron content to differences in heat tolerance in ivy geraniums is unknown. Here we show that the H2O2 content and ROS scavenging enzyme stability in ivy geranium varies with varieties and active iron is not related to heat tolerance in ivy geranium. H2O2 content in …


Survival And Habitat Selection Of American Black Ducks In Tennessee, Kira Cristina Newcomb Dec 2014

Survival And Habitat Selection Of American Black Ducks In Tennessee, Kira Cristina Newcomb

Theses and Dissertations

American black duck (Anas rubripes) populations declined throughout North America from 1950–1990, but the breeding population since has stabilized. However, limited information exists on black ducks in the Mississippi Flyway, where wintering populations continue to decline. I radiomarked 111 female black ducks at Tennessee National Wildlife Refuge (TNWR) in winters 2010–2012 to estimate winter survival and investigate patterns of habitat selection. Winter survival (83–85%) was greater than or comparable to previous estimates for black duck populations in North America. Interval survival increased 0.6% with a 100 g increase in body mass, but survival differed between years and waterfowl hunting seasons …


The Contribution Of Outdoor Recreation On Rural Property Sales In Mississippi, Jerry Brashier Dec 2014

The Contribution Of Outdoor Recreation On Rural Property Sales In Mississippi, Jerry Brashier

Theses and Dissertations

To estimate the contribution of outdoor recreation on rural property sales in Mississippi, information was collected from lenders and appraisers associated with the Federal Land Bank, Mossy Oak Properties, and Rutledge Investment Company on properties sold from 2003-2008 in three regions of Mississippi: Mississippi Delta/Hills Region, North Mississippi Region and South Mississippi Region. Property sales information was collected on 102,747 hectares (ha) of rural properties valued at $475.1 million. Hedonic regression analysis was used to quantify the contribution of outdoor recreation on Total Sale Value (TSV). Outdoor recreation contributed $160.6 million of the TSV. Forests comprised 71% of land coverage …


Improved Methods For The Analysis Of Estrogen Residues In Environmental Aqueous Matrices, Sameera Ranmal Gunatilake Dec 2014

Improved Methods For The Analysis Of Estrogen Residues In Environmental Aqueous Matrices, Sameera Ranmal Gunatilake

Theses and Dissertations

Improved analytical methods using novel cleanup techniques and inexpensive instrumentation for the determination of residue estrogens in municipal wastewater and swine lagoon wastewater have been developed. Presented approaches are less expensive, less time consuming, yet produce comparable detection limits and extraction efficiencies to existing methods. Chapter I provides an overview on environmental estrogens. Chapter II describes a novel method to quantify five estrogens including estriol, estrone, 17alpha-estradiol, 17beta-estradiol, and 17alpha-ethynylestradiol in influent and effluent municipal wastewater. The method includes sample preparation using solid-phase extraction followed by a “QuEChERS” cleanup, dansylation and LC/MS/MS detection. Hydrophilic-lipophilic balance solid phase extraction (SPE) was …


Inspection Of Timber Bridge Longitudinal Decks With Ground Penetrating Radar, Brian K. Brashaw Dec 2014

Inspection Of Timber Bridge Longitudinal Decks With Ground Penetrating Radar, Brian K. Brashaw

Theses and Dissertations

Advanced nondestructive inspection techniques like stress wave timing and resistance microdrilling have been used to successfully inspection timber bridges, but it is most effective on girder style bridges. There is a noted need to develop additional inspection techniques for longitudinal deck/slab timber bridges, which comprise about 20% of the national bridge inventory. One technique that holds potential is ground penetrating radar, a recognized nondestructive testing technique that has been used effectively for many different environmental and transportation applications. It has been utilized successfully to identify buried objects, internal defects and material changes. The objective of this research was to assess …


Investigating Melatonin Supplementation On Maternal Hemodynamics And Offspring Programming, Katelyn E. Brockus Dec 2014

Investigating Melatonin Supplementation On Maternal Hemodynamics And Offspring Programming, Katelyn E. Brockus

Theses and Dissertations

The objective was to examine effects of melatonin supplementation during late gestation on uterine artery hemodynamics, offspring growth, and endocrine profiles. Prior to day 170 of gestation, heifers were trained to the Calan feeding system. On day 190 of gestation, heifers (n = 20) were blocked by BW and then randomly assigned to one of two dietary treatments: 1) 20 mg of dietary melatonin per day (MEL) or 2) no melatonin supplementation (CON). Supplementation ceased on day 262 of gestation. A main effect (P < 0.01) of treatment was observed for total uterine artery blood flow with it being increased in MEL vs. CON. An interaction (P = 0.008) was observed in calf body weight increasing at weeks 8 and 9 in MEL vs. CON. Dietary melatonin could be used to potentially increase uterine blood flow and calf body weight.


Investigation Of The Beneficial Effect Of Enterobacter Cloacae Strain Jd6301 On Mice Challenged With Escherichia Coli O157:H7, Jessica Grissett Wilson Dec 2014

Investigation Of The Beneficial Effect Of Enterobacter Cloacae Strain Jd6301 On Mice Challenged With Escherichia Coli O157:H7, Jessica Grissett Wilson

Theses and Dissertations

The environment of the gastrointestinal (GI) tract is an extremely complex system made up of not only host cells, but also many beneficial microbes. Disruption of this environment can often lead to disorders and health issues. To help balance this system, probiotics have often been administered to both humans and animals, such as livestock. This study aimed to determine what beneficial effects a novel strain of Enterobacter cloacae, strain JD6301, could offer to a host in the presence of an enteric infection with E. coli O157:H7. Upon administration of JD6301, supplemented animals had overall less E. coli present in the …


Molecular And Proteomic Analysis Of Components Involved In Abscisic Acid (Aba) Signaling Network, Jie Song Dec 2014

Molecular And Proteomic Analysis Of Components Involved In Abscisic Acid (Aba) Signaling Network, Jie Song

Theses and Dissertations

Abscisic acid is an important plant hormone in the responses to biotic and abiotic stresses, which also regulates various growth and developmental processes in plants. Three major components-receptors (PYRs), the PP2C type phosphatases and the SnRK2 subtype kinases form a double negative regulatory system: PYR/PYL/RCARs inhibit the activity of PP2Cs while PP2Cs inhibit that of SnRK2s in ABA signaling pathway. The results of my studies showed that ABA would directly affect the interaction between SnRK2.2 and ABI1 in absence of PYRs. Furthermore, ABA can inhibit the catalytic activity of the SnRK2.2 kinase. These findings indicated that ABA may directly interact …


Finite Element Analysis Of Adhesive Bonding Performances Of Wooden Dowel Pin Joints In Furniture, Xin Sun Dec 2014

Finite Element Analysis Of Adhesive Bonding Performances Of Wooden Dowel Pin Joints In Furniture, Xin Sun

Theses and Dissertations

This study was performed to investigate how pressure, glue amount, dowel penetration depth and wood grain orientation affect direct withdrawal resistances of dowel pin joints both experimentally and numerically, and develop FE (finite element) models to simulate tensile strength, contact pressure, and shear stress occurred in dowel pin joints. Results indicated that the direct withdrawal resistance load of a dowel pin joints can be predicted based on knowing the glue bonding shear strength between dowel and joint member materials and the pressure between the contact surfaces of the dowel and hole of a connected joint member. The FE contact element …


General Education Teachers Implementing Common Core With Students In Special Education: A Mixed Methods Study Of Teachers' Self-Efficacy Beliefs, Jon Leland Cash Dec 2014

General Education Teachers Implementing Common Core With Students In Special Education: A Mixed Methods Study Of Teachers' Self-Efficacy Beliefs, Jon Leland Cash

Theses and Dissertations

This embedded mixed method study addresses the problems teachers have reported in believing themselves capable to implement the Common Core State Standards with students in special education. This study examines the effect professional development on implementing the Common Core State Standards had on the participating teachers’ self-efficacy beliefs. The participants (N=21) in this study were drawn from a 20-day professional development for teachers based on implementing the Common Core State Standards. The instrument used in the study was the Teacher Efficacy Beliefs System-Self. Data were subject to both statistical and qualitative analysis. The results of this study provide insight into …