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Articles 571 - 600 of 2050
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Preservice Agricultural Education Majors’ Perceptions Of Integrating Science Into Agriculture, Kasey Trocke
Preservice Agricultural Education Majors’ Perceptions Of Integrating Science Into Agriculture, Kasey Trocke
Electronic Theses and Dissertations
Agricultural science has seen a rise in secondary agricultural classrooms and many studies have been done with regards to integrating science into agriculture. Several recommendations have been to assist preservice agriculture education majors with science integration. Preservice agricultural education majors could influence the future of agricultural science due to their perceptions of integrating science into agriculture into the classroom. The purpose of the study was to assess preservice teachers’ perceptions of integrating science into agriculture curriculum based on the theory of planned behavior. An online survey was administered to the population of agricultural education majors at South Dakota State University. …
Characterizing Spatiotemporal Patterns Of White Mold In Soybean Across South Dakota Using Remote Sensing, Confiance L. Mfuka
Characterizing Spatiotemporal Patterns Of White Mold In Soybean Across South Dakota Using Remote Sensing, Confiance L. Mfuka
Electronic Theses and Dissertations
Soybean is among the most important crops, cultivated primarily for beans, which are used for food, feed, and biofuel. According to FAO, the United States was the biggest soybeans producer in 2016. The main soybean producing regions in the United States are the Corn Belt and the lower Mississippi Valley. Despite its importance, soybean production is reduced by several diseases, among which Sclerotinia stem rot, also known as white mold, a fungal disease that is caused by the fungus Sclerotinia sclerotiorum is among the top 10 soybean diseases. The disease may attack several plants and considerably reduce yield. According to …
Classification Of North Africa For Use As An Extended Pseudo Invariant Calibration Sites (Epics) For Radiometric Calibration And Stability Monitoring Of Optical Satellite Sensors, Mahesh Shrestha
Electronic Theses and Dissertations
An increasing number of Earth-observing satellite sensors are being launched to meet the insatiable demand for timely and accurate data to help the understanding of the Earth’s complex systems and to monitor significant changes to them. The quality of data recorded by these sensors is a primary concern, as it critically depends on accurate radiometric calibration for each sensor. Pseudo Invariant Calibration Sites (PICS) have been extensively used for radiometric calibration and temporal stability monitoring of optical satellite sensors. Due to limited knowledge about the radiometric stability of North Africa, only a limited number of sites in the region are …
An Initial Exploration Of The 2005 Iowa Rural Interstate Speed Limit Increase Using Linear Regression, Thomas Ryan Cook
An Initial Exploration Of The 2005 Iowa Rural Interstate Speed Limit Increase Using Linear Regression, Thomas Ryan Cook
Electronic Theses and Dissertations
Speed limit increases, particularly on interstates have been studied and researched many times over the course of the last 50 years in the United States. These research efforts began after the implementation of the National Maximum Speed Law (NMSL), which reduced all speed limits to a maximum of 55-mph. In the years that followed, this restriction was relaxed to 65-mph with the Surface Transportation and Uniform Relocation Assistance Act (STURAA) and ultimately repealed later by the National Highway System Designation Act (NHSDA). Since the repeal, states reacted in myriad of ways and many studies documented the changes of those reactions. …
Methods For Earth-Observing Satellite Surface Reflectance Validation, Moe Talal Badawi
Methods For Earth-Observing Satellite Surface Reflectance Validation, Moe Talal Badawi
Electronic Theses and Dissertations
In this study an initial validation of the Landsat 8 (L8) Operational Land Imager (OLI) Surface Reflectance (SR) product was performed. The OLI SR product is derived from the L8 Top-of-Atmosphere product via the Landsat Surface Reflectance Code (LaSRC) software and generated by the U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center. The goal of this study is to develop and evaluate proper validation methodology for the OLI L2 SR product. Validation was performed using near-simultaneous ground truth SR measurements during Landsat 8 overpasses at 13 sites located in the U.S., Brazil, Chile and France. The ground …
How Are Interannual Variations Of Land Surface Phenology In The Highland Pastures Of Kyrgyzstan Modulated By Terrain, Snow Cover Seasonality, And Climate Oscillations? An Investigation Using Multi-Source Remote Sensing Data, Monika Anna Tomaszewska
How Are Interannual Variations Of Land Surface Phenology In The Highland Pastures Of Kyrgyzstan Modulated By Terrain, Snow Cover Seasonality, And Climate Oscillations? An Investigation Using Multi-Source Remote Sensing Data, Monika Anna Tomaszewska
Electronic Theses and Dissertations
In the semiarid, continental climates of montane Central Asia, with its constant moisture deficit and low relative humidity, agropastoralism constitutes the foundation of the rural economy. In Kyrgyzstan, an impoverished, landlocked republic in Central Asia, herders of the highlands practice vertical transhumance—the annual movement of livestock to higher elevation pastures to take advantage of seasonally available forage resources. Dependency on pasture resource availability during the short mountain growing season makes herds and herders susceptible to changing weather and climate patterns. This dissertation focuses on using remote sensing observations over the highland pastures in Kyrgyzstan to address five interrelated topics: (i) …
The Impacts Of Land Use And Land Cover Change On Water Quality In The Big Sioux River: 2007-2016, Dinesh Shrestha
The Impacts Of Land Use And Land Cover Change On Water Quality In The Big Sioux River: 2007-2016, Dinesh Shrestha
Electronic Theses and Dissertations
Between 2006 and 2012, conversion of 485,000 acres of grassland to cropland in eastern South Dakota was reported. In 2012, the Big Sioux River (BSR) running through most of eastern South Dakota was listed among the dirtiest rivers in the nation. This rating convinced state authorities to study trends of land cover changes in the BSR watershed and its association with BSR water quality with respect to increases in nitrate levels. This research i) quantifies spatial and temporal changes in the land cover types within the BSR watershed, and ii) identifies any correlation between these changes and changes in BSR …
Land Cover Changes Within And Around Protected Areas In Côte D’Ivoire From 1986 To 2017: A Case Study Of The Mabi-Yaya-Songan-Tamin Reserved Forests, Olena Boiko
Electronic Theses and Dissertations
Tropical forests mitigate climate change, provide habitat for the most biologically diverse terrestrial communities, and yield ecosystem services that support human wellbeing. These forests are some of the most threatened ecosystems because of the increasing human impact on the environment. Côte d’Ivoire has one of the highest deforestation rates in sub-Saharan Africa, and the expansion of agriculture to produce cash crops, such as cocoa and rubber, is presented as the primary reason for forest loss. These changes are apparent even within the boundaries of the protected areas, which raises concerns about the effectiveness of the protection strategies. This project illustrates …
Estimating Soil Organic Carbon In Cultivated Soils Using Soil Test Data, Remote Sensing Imagery From Satellites (Landsat 8 And Plantscope), And Web Soil Survey Data, Muhammed Halil Koparan
Estimating Soil Organic Carbon In Cultivated Soils Using Soil Test Data, Remote Sensing Imagery From Satellites (Landsat 8 And Plantscope), And Web Soil Survey Data, Muhammed Halil Koparan
Electronic Theses and Dissertations
Soil organic carbon (SOC) is an important soil parameter of cultivated soils that needs to be monitored and mapped regularly to enhance soil health and productivity. SOC levels in cultivated areas is difficult to monitor for farmers and is costly to analyze using traditional methods. The objective of this study was to estimate surface SOC distribution in selected soils of Major Land Resource Areas (MLRA) 102A (Rolling Till Plain, Brookings County, SD) and 103 (Central Iowa and Minnesota Till Prairies, Lac qui Parle County, MN) using soil sample data, Web Soil Survey (WSS) data, and satellite imagery (Landsat 8 and …
New Approach For Temporal Stability Evaluation Of Pseudo-Invariant Calibration Sites (Pics), Fatima Tuz Zafrin Tuli
New Approach For Temporal Stability Evaluation Of Pseudo-Invariant Calibration Sites (Pics), Fatima Tuz Zafrin Tuli
Electronic Theses and Dissertations
Pseudo-Invariant Calibration Sites (PICS) are one of the most popular methods for in-flight vicarious radiometric calibration of Earth remote sensing satellites. The fundamental question of PICS temporal stability has not been adequately addressed. However, the main purpose of this work is to evaluate the temporal stability of a few PICS using a new approach. The analysis was performed over six PICS (Libya 1, Libya 4, Niger 1, Niger 2, Egypt 1 and Sudan 1). The concept of a “Virtual Constellation” was developed to provide greater temporal coverage and also to overcome the dependence limitation of any specific characteristic derived from …
Empirical Absolute Calibration Model For Multiple Pseudo-Invariant Calibration Sites, Bipin Raut
Empirical Absolute Calibration Model For Multiple Pseudo-Invariant Calibration Sites, Bipin Raut
Electronic Theses and Dissertations
This work extends an empirical absolute calibration model initially developed for the Libya 4 Pseudo-Invariant Calibration Site (PICS) to five additional Saharan Desert PICS (Egypt 1, Libya 1, Niger 1, Niger 2, and Sudan 1), and demonstrates the efficacy of the resulting models at predicting sensor top-of-atmosphere (TOA) reflectance. It attempts to generate absolute calibration models for these PICS that have an accuracy and precision comparable to or better than the current Libya 4 model, with the intent of providing additional opportunities for sensor calibration. In addition, this work attempts to validate the general applicability of the model to other …
Evaluation Of An Extended Pics (Epics) For Calibration And Stability Monitoring Of Optical Satellite Sensors, Md Nahid Hasan
Evaluation Of An Extended Pics (Epics) For Calibration And Stability Monitoring Of Optical Satellite Sensors, Md Nahid Hasan
Electronic Theses and Dissertations
Pseudo Invariant Calibration Sites (PICS) have been increasingly used as an independent data source for on-orbit radiometric calibration and stability monitoring of optical satellite sensors. Generally, this would be a small region of land that is extremely stable in time and space, predominantly found in North Africa. Use of these small regions, referred to as traditional PICS, can be limited by: i) the spatial extent of an individual Region of Interest (ROI) and/or site; ii) and the frequency of how often the site can be acquired, based on orbital patterns and cloud cover at the site, both impacting the time …
Tropical Forest Canopy Height And Aboveground Biomass Estimation Using Airborne Lidar And Landsat-8 Data, A Sensitivity Study With Respect To Landsat-8 Data Temporal Availability, In Mai Ndombe Province, Democratic Republic Of Congo, Herve B. Kashongwe
Electronic Theses and Dissertations
Tropical forests’ structure information, such as forest canopy height, is a key component in any estimate of carbon stock. Tropical rainforests constitute the most forested ecosystems that harbor the largest biodiversity on Earth and store more carbon (above and belowground biomass) than any other ecosystem in the world. However, estimates of forest canopy structure is lacking over most of the regions that host this ecosystem because of both the structure’s complexity of this ecosystems and the incomplete or lack of up-to-date national forest inventory data necessary to derive forest canopy height and aboveground biomass. This study explores the capability of …
Twin Text In The Secondary Social Studies And English Classroom, Sarah Booth Quong
Twin Text In The Secondary Social Studies And English Classroom, Sarah Booth Quong
Electronic Theses and Dissertations
This mixed-method study explores the implementation of Twin Text and its effectiveness in the U.S. History and English classrooms with regard to: mastery of the objectives laid out within the course curriculum, perpetuation of deeper learning, and fostering empathy and civic engagement through the use of Twin Text involving tenth and eleventh grade students and United States History and English teachers. The study answers the following questions: (1) What are the experiences of students in a Twin Text setting classroom environment? Three sub questions emerged: (A) In what ways does cross-curriculum teaching with an English Language Arts instructor affect student …
Social Identity, Economic Interest, And The Formation Of Host Attitudes Toward Refugees, Jeremy Cox
Social Identity, Economic Interest, And The Formation Of Host Attitudes Toward Refugees, Jeremy Cox
Electronic Theses and Dissertations
Scholarly studies of refugee crises have historically focused on the causes of refugee flight, the experience of the refugees themselves, or the impacts of refugees on host countries. More recently, a growing body of literature has examined the interaction of refugees and host populations, and more specifically the orientations of host individuals toward refugees. This study focuses on attitude formation during refugee crises, seeking to better understand the role of social and economic factors in shaping the attitudes of host populations. The core questions for this study are whether and how social identity and economic considerations relate to attitudes. Original …
Junior High School Student Preference: Teaching Taiwanese Folk Songs Using Orff Activites Vs Traditional Teaching, Mei-Chi Wu
Electronic Theses and Dissertations
This research explores the development of the Orff approach in Taiwan and its applications in the teaching of singing. The researcher seeks to examine the effects of Orff activities in raising the interest of junior high school students in singing. The literature review includes the historical background of the Orff approach and the examination of potential creative adaptations in the teaching of folk songs. In this research, the following are discussed: music education in Taiwan, the development of the Orff approach in private schools, comparisons and contrasts between the New and the Old Curricula in Taiwan, the nature of folk …
Flex, Julian Randall
Flex, Julian Randall
Electronic Theses and Dissertations
Within this project I have compiled a book length collection of poems entitled “FLEX” which explore questions of violence, inheritance and pastoral poetics. Taking place across the landscapes of Mississippi, The Dominican Republic, and contemporary Black masculinity FLEX serves to ask questions of what violences contributed to the speaker’s birth and what possibilities exist on the other side of such historical pain.
A Bargain At Any Cost: The Rise Of Dollar General, Frances Evelyn Barrett
A Bargain At Any Cost: The Rise Of Dollar General, Frances Evelyn Barrett
Electronic Theses and Dissertations
Dollar General Corporation has grown into a retail titan with more than 15 000 stores across the continental United States. The first chapter of this thesis traces the history of this multibillion-dollar firm since its founding as a family-run business in Scottsville Kentucky in the late 1930s. Situating Dollar General’s history within the evolving contexts of the twentieth and twenty-first centuries illustrates that Dollar General Stores succeed when the economy staggers. Neoliberalism and global finance capitalism have only exacerbated the geographic expansion and profitability of the company as the second chapter begins to explore. Although Dollar General Stores open at …
My Feet Are Chained: Settler Colonialism And Mobility In The Florida Borderlands, 1812-1866, Christine Antoinette Rizzi
My Feet Are Chained: Settler Colonialism And Mobility In The Florida Borderlands, 1812-1866, Christine Antoinette Rizzi
Electronic Theses and Dissertations
This project uses the framework of mobility to understand how settler colonialism functioned in a tri-racial southern borderland in the nineteenth-century. Nineteenth-century Florida constituted a borderland characterized by competition for land and resources among Seminole Indians, African Americans, and white Americans. White Americans regulated mobility, i.e. the physical movement of peoples, in order to privilege their own settlement in Florida, divest native peoples of their land, and enslave people of African descent. Beginning in 1812 and lasting through the first half of the 1860s, white Americans used legislation, the settlement of white families, the solidification of a slave system, and …
Evaluating The Effects Of Water Influx On The Mississippi Sound: Current Vs. Historical Relationships, Jarett Lee Bell
Evaluating The Effects Of Water Influx On The Mississippi Sound: Current Vs. Historical Relationships, Jarett Lee Bell
Electronic Theses and Dissertations
This research investigated the influence of the opening of the Bonnet Carre Spillway and other fresh water inputs on the Mississippi Sound. The Bonnet Carre Spillway was completed in 1931 and was constructed to protect New Orleans whenever the Mississippi River is at flood stage. The spillway drains into Lake Pontchartrain a brackish-water lagoon north of New Orleans which then drains into Lake Borgne and subsequently into the Mississippi Sound. The inflow of water from the spillway changes the water chemistry of all receiving water bodies and impacts the waters of the Mississippi Gulf Coast. We collected in-situ temperature specific …
End Of Life Costs In Medicare Beneficiaries With Parkinson’S Disease, Sasikiran Nunna
End Of Life Costs In Medicare Beneficiaries With Parkinson’S Disease, Sasikiran Nunna
Electronic Theses and Dissertations
Parkinson's disease (PD) is a chronic and progressive neurodegenerative disorder which is characterized by motor and non-motor disorders. The prevalence of PD is high among elderly patients. Due to the chronic nature of PD, increasing prevalence and ageing population, it is important to understand the burden of PD at various stages of patient’s life so that value of PD therapies can be assessed. While direct healthcare costs during the life time of PD were assessed in previous studies, there is lack of information about end of life costs in PD patients. This dissertation aimed at filling the gap in literature …
Community Resilience: A Meta-Study Of International Development Rhetoric In Emerging Economies, Rachel Ann Haggard
Community Resilience: A Meta-Study Of International Development Rhetoric In Emerging Economies, Rachel Ann Haggard
Electronic Theses and Dissertations
Understood generally, community resilience is the ability of communities to adapt, absorb, mitigate, and recover from shocks and stressors in such a way that facilitates positive future outcomes and reduces overall vulnerability to future shocks and stressors (Adger, 2000; Norris, Stevens, Pfefferbaum, Wyche & Pfefferbaum, 2008; USAID, 2013; Walker et al., 2004). The core of this definition relates to sustainability and the capability of socio-ecological systems and communities to adapt and transform to both day to day fluctuations and stressors as well as major disasters (Milman & Short, 2008; Walker et al., 2004). This meta-study seeks to shed light on …
The Politics Of Place, The Urban-Rural Divide, And Geographic Identities In American Politics, Daniel Fudge
The Politics Of Place, The Urban-Rural Divide, And Geographic Identities In American Politics, Daniel Fudge
Electronic Theses and Dissertations
To test these theories, I conduct a series of empirical tests using survey data from the American National Election Survey (ANES) and an original survey experiment. Chapter two examines how people’s ideological perceptions are moderated by living in a particular area. Using the ANES data, I conduct a regression analysis with an interaction of the respondent’s ideology and the geographic location. Chapter three analyzes how individuals perceive a political candidate based on partisan and geographic information presented to the respondent. Using an original survey experiment, this study seeks to illustrate how individuals across urban and rural America perceive Republican and …
Central Florida School Districts' Responses To Hispanic Growth, 1980-2010, Kendra Hazen
Central Florida School Districts' Responses To Hispanic Growth, 1980-2010, Kendra Hazen
Electronic Theses and Dissertations
Since the 1980s, Hispanics have been the fastest growing minority in the United States and have been moving into rural, Southern areas where there have previously not been populations of Hispanics. Studies of these demographic changes have concentrated on how communities impacted by the influx of Hispanics have created or adjusted socioeconomic and political infrastructures to accommodate the linguistic and cultural needs of the Hispanic population. The public-school system is a sociopolitical structure that has affected and has been affected by the increase in Hispanics. Whereas the modern Civil Rights movement had created legal precedence for students' language rights and …
Selecting Methods To Teach Controversial Topics: A Grounded Theory Study, Sean Loomis
Selecting Methods To Teach Controversial Topics: A Grounded Theory Study, Sean Loomis
Electronic Theses and Dissertations
This grounded theory study examined the perceptions of 14 high school social studies teachers from three school districts in the Central Florida area. They were interviewed to uncover the decision-making process that high school social studies teachers use to choose methodologies when teaching controversial public issues (CPIs). The result was a three-phase model, the CPI Decision-Making Model, in which teachers move through three conceptual phases to decide on a particular methodology. By working through this process, teachers analyze the benefits and drawbacks of different methods for teaching controversial public issues. Significant results from this study included: (a) teachers were choosing …
Understanding Sediment Biogeochemistry And The Role Of Juvenile Oysters On Recently Restored Eastern Oyster Reefs, Bryan Locher
Understanding Sediment Biogeochemistry And The Role Of Juvenile Oysters On Recently Restored Eastern Oyster Reefs, Bryan Locher
Electronic Theses and Dissertations
In recent decades, goals for the restoration of eastern oyster (Crassostrea virginica) populations along the eastern coast of the United States have shifted from increasing harvestable oyster fisheries to enhancing the range of ecosystem services provided by oyster reefs. By filtering large volumes of water and releasing nutrient-rich feces and pseudofeces, oysters can locally enhance sediment biogeochemical cycling compared to that of unstructured benthic environments. An ongoing restoration program in Mosquito Lagoon, FL was leveraged to assess the immediate impacts ( < 1 year) of restoration on sediment biogeochemical properties of oyster reefs. The first study measured both short-term and long-term pools of carbon, nitrogen and phosphorus on dead, natural and restored reefs periodically over one year. The second study investigated one of the contributions to sediment nutrient pools by comparing feeding and feces/pseudofeces nutrient content of juvenile and older oysters. Results show that inorganic nitrogen and phosphorus pools can change within weeks after restoration and total nutrient pools by 6 months post-restoration. Restored reefs experienced a 136 % increase in ammonium, 78 % increase in total nitrogen, 46 % increase in total phosphorus, and 75 % increase in organic matter concentrations after 12 months of restoration. These nutrient increases were all positively correlated with oyster density, shell length and reef height measured on each reef. When standardized to grams of dry tissue weight, juvenile oysters showed significantly higher rates of chlorophyll-a removal, release of ammonium, and biodeposits with higher concentrations of dissolved organic carbon, nitrite + nitrate, and ammonium. The short-term changes to biogeochemical cycling on eastern oyster reefs within the first year of restoration are important to managers seeking to monitor ecosystem service recovery and overall coastal ecosystem health.
A Grounded Theory Survey Study Of Teachers Perception Perpetuating The Deficit Narrative About Marginalized Students Of Color, Cavel Austin
A Grounded Theory Survey Study Of Teachers Perception Perpetuating The Deficit Narrative About Marginalized Students Of Color, Cavel Austin
Electronic Theses and Dissertations
The deficit narrative about marginalized students of color attributes their failure in school to some nature of innate cognitive deficiency, cultural, social, and familial dysfunctions among other schools of thoughts. The purpose of this grounded theory study is to provide a rich description about this phenomenon and to propose theoretical pedagogical adjustments in the classroom as it relates to educating students of color. The study applies Charmaz (2014) Constructivist approach to grounded theory methods to examine the following research questions: (RQ1) How do teachers' narratives about students of color depict their teaching experiences and (RQ2) How do teachers' narratives about …
Investigation Of Flow Field Structures In A Rectangular Channel With A Pin Fin Array, Patrick Tran
Investigation Of Flow Field Structures In A Rectangular Channel With A Pin Fin Array, Patrick Tran
Electronic Theses and Dissertations
Pin fin arrays are commonly found in heat exchangers, turbine blades, and electronic heat sinks. Fin arrays are extended surfaces that are used as turbulence promoters by inducing horseshoe vortex (HSV) and von Karman vortex (KV) structures. The horseshoe vortex are primarily studied in the leading edge of the blunt body, whereas the KV are formed in the trailing side. This study presents an experimental investigation of flow field structures and pressure loss on staggered pin fin array in the wake region, where KV are dominate. These flow structures increase the local levels turbulence and generate eddies that promote flow …
A System Dynamics Approach On Sustainability Assessment Of The United States Urban Commuter Transportation, Tolga Ercan
A System Dynamics Approach On Sustainability Assessment Of The United States Urban Commuter Transportation, Tolga Ercan
Electronic Theses and Dissertations
Transportation sector is one of the largest emission sources and is a cause for human health concern due to the high dependency on personal vehicle in the U.S. Transportation mode choice studies are currently limited to micro- and regional-level boundaries, lacking of presenting a complete picture of the issues, and the root causes associated with urban passenger transportation choices in the U.S. Hence, system dynamics modeling approach is utilized to capture complex causal relationships among the critical system parameters affecting alternative transportation mode choices in the U.S. as well as to identify possible policy areas to improve alternative transportation mode …
Looking Into The Past: The Diversification Of Amphibians In The Neotropical Savannas, Ísis Da Costa Arantes
Looking Into The Past: The Diversification Of Amphibians In The Neotropical Savannas, Ísis Da Costa Arantes
Electronic Theses and Dissertations
Aim: Reveal the evolutionary processes that contributed to biotic diversification in the Cerrado savanna using amphibians as a model. Evolutionary patterns were investigated by comparing the phylogeographic and biogeographic history of biome-specific yet widely distributed amphibian species (Chiasmocleis albopunctata, Dendropsophus rubicundulus and Physalaemus nattereri). Location: Cerrado region, central South America. Methods: I sampled thousands of loci randomly distributed throughout the genomes of all three species. I applied phylogenetic, phylogeographic, demographic, and coalescent species delimitation methods to these molecular data, in combination with species distribution modeling for the past, in order to resolve questions of evolutionary history, taxonomic diversity, …