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Articles 391 - 420 of 7360
Full-Text Articles in Entire DC Network
The King’S Final Journey: American Press Coverage Of King Kalākaua’S Last Visit To The United States, 1890–1891, Douglas V. Askman
The King’S Final Journey: American Press Coverage Of King Kalākaua’S Last Visit To The United States, 1890–1891, Douglas V. Askman
Pacific Studies
King Kalākaua of Hawai‘i undertook several overseas trips during his reign. The last was to California in 1890. It was there that the king died in January 1891. This article explores American press coverage of Kalākaua’s last journey. It examines the enormous amount of attention that California newspapers paid to the king’s travels in the state with much of the reporting being extremely positive. This was similar to coverage of Kalākaua’s previous trips to the United States. Following the monarch’s death, papers across America reflected on his reign. This analysis, although not entirely complimentary, reflects the great success that Kalākaua …
Vol. 45 No. 2 (2022): Pacific Studies Front Matter, The Jonathan Nāpela Center For Hawaiian And Pacific Islands Studies
Vol. 45 No. 2 (2022): Pacific Studies Front Matter, The Jonathan Nāpela Center For Hawaiian And Pacific Islands Studies
Pacific Studies
Front Matter for the Vol. 45, No 2-Dec 2022 edition of the Pacific Studies Journal.
Reference Database Of Teeth Images From The Family Bovidae, Juliet K. Brophy, Gregory J. Matthews
Reference Database Of Teeth Images From The Family Bovidae, Juliet K. Brophy, Gregory J. Matthews
Faculty Publications
Researchers typically rely on fossils from the Family Bovidae to generate African paleoenvironmental reconstructions due to their strict ecological tendencies. Bovids have dominated the southern African fauna for the past four million years and, therefore, dominate the fossil faunal assemblages, especially isolated teeth. Traditionally, researchers reference modern and fossil comparative collections to identify teeth. However, researchers are limited by the specific type and number of bovids at each institution. B.O.V.I.D. (Bovidae Occlusal Visual IDentification) is a repository of images of the occlusal surface of bovid teeth. The dataset currently includes extant bovids from 7 tribes and 20 species (~3900). B.O.V.I.D. …
Examining The Intersections Of Art And Science Through Photomicrography, Lauren Marie Solomon
Examining The Intersections Of Art And Science Through Photomicrography, Lauren Marie Solomon
Honors Theses
This thesis explores the ways in which photomicrography is interdisciplinary, requiring the fields of both art and science. Three types of microscopy were used in this project, brightfield, epifluorescence, and confocality. The overall thesis is both, a body of artistic work and a narrative of my endeavor to understand the science and process behind photomicroscopy.
If You Give A Beetle A Maple: Anoplophora Glabripennis Habitat Selection Patterns On An Island In South Carolina, Meredith Bean
If You Give A Beetle A Maple: Anoplophora Glabripennis Habitat Selection Patterns On An Island In South Carolina, Meredith Bean
All Theses
At the epicenter of the Asian longhorned beetle (Anoplophora glabripennis Motschulsky) quarantine zone in South Carolina, a small island containing an actively growing subpopulation of A. glabripennis had not completely killed its 37 host trees in 2020. Before these trees were removed and destroyed according to the USDA Eradication Program protocols, I performed an observational study to examine the microhabitat selection tendencies of the invasive A. glabripennis within this satellite infestation. After cataloging >14,000 oviposition sites and >1,600 exit holes created by A. glabripennis, I found dispersal trends according to a host’s stem status (single or multi-stemmed), vertical …
Community As Safe Space For Survival: African American Women And The Great Migration In Gloria Naylor’S The Women Of Brewster Place, Ann Petry’S The Street, And Toni Morrison’S Jazz, Carmel Aisha Breed-Thomas
Community As Safe Space For Survival: African American Women And The Great Migration In Gloria Naylor’S The Women Of Brewster Place, Ann Petry’S The Street, And Toni Morrison’S Jazz, Carmel Aisha Breed-Thomas
Theses (2016-Present)
Abstract This project closely examines the unique challenges African American women faced as migrants from the rural South to the urban North during the Great Migration and particularly how community and safe spaces were necessary for survival. This article will focus on the literary works of The Street by Ann Petry, The Women of Brewster Place by Gloria Naylor, and Jazz by Toni Morrison to specifically analyze the migrant stories of African American women. The Warmth of Other Suns by Isabel Wilkerson is used as a non-fiction anchor text to compare and contrast the fictitious accounts alongside the non-fiction accounts. …
Liberty And Justice For Y’All: Allowing Legal Paraprofessionals To Practice Law To Reduce The Effects Of Legal Deserts In Rural Georgia, Amanda Claxton
Liberty And Justice For Y’All: Allowing Legal Paraprofessionals To Practice Law To Reduce The Effects Of Legal Deserts In Rural Georgia, Amanda Claxton
Mercer Law Review
The lack of attorneys in rural America is not merely a social or cultural problem—it is a legal problem that officers of the courts cannot continue to ignore. Legal deserts are geographical areas where legal services are widely unavailable. Particularly in rural Georgia, legal deserts are a substantial issue. Attorneys and nonprofit organizations have attempted to ease the detrimental effects of legal deserts in a variety of ways; for various reasons, those efforts have been insufficient, and rural counties struggle to attract lawyers. Still, there is one method of resolving legal deserts that Georgia has yet to attempt: creating an …
Malaria Vector Feeding, Peak Biting Time And Resting Place Preference Behaviors In Line With Indoor Based Intervention Tools And Its Implication: Scenario From Selected Sentinel Sites Of Ethiopia, Alemnesh Hailemariam Bedasso, Abebe Asale Gutto, Abate Waldetensai, Araya Eukubay, Getachew Eticha Bokore, Solomon Kinde, Fekadu Gemechu, Yared Debebe, Mesfin Aklilu, Geremew Tasew, Fekadu Massebo, Abebe Teshome, Tilahun Kebede, Bedri Abdulatif, Achamyelesh Sisay, Hiwot Solomon, Eliningaya J. Kweka
Malaria Vector Feeding, Peak Biting Time And Resting Place Preference Behaviors In Line With Indoor Based Intervention Tools And Its Implication: Scenario From Selected Sentinel Sites Of Ethiopia, Alemnesh Hailemariam Bedasso, Abebe Asale Gutto, Abate Waldetensai, Araya Eukubay, Getachew Eticha Bokore, Solomon Kinde, Fekadu Gemechu, Yared Debebe, Mesfin Aklilu, Geremew Tasew, Fekadu Massebo, Abebe Teshome, Tilahun Kebede, Bedri Abdulatif, Achamyelesh Sisay, Hiwot Solomon, Eliningaya J. Kweka
All Peer-Reviewed Publications
In Ethiopia, malaria incidence has significantly reduced in the past decade through the combined use of conventional vector control approaches and treatment using antimalarial drugs. However, the sustainability of this achievement is threatened by the shift in biting and resting behaviors and emergence of insecticide resistance by the primary malaria vector. Therefore, continuous monitoring of the behaviour of malaria mosquitoes in different sentinel sites is crucial to design effective prevention and control methods in the local context. Entomological investigations were conducted in three sentinel sites for five consecutive months during the major malaria transmission season. The species composition, population dynamics, …
Accessibility To Archaeological Sites In Cairo (Case Study: Gabal Citadel And Baron Palace), Asmaa Fathi Hammed, Haby Mustafa Hosney
Accessibility To Archaeological Sites In Cairo (Case Study: Gabal Citadel And Baron Palace), Asmaa Fathi Hammed, Haby Mustafa Hosney
Mansoura Engineering Journal
Cultural tourism is one of the most important factors attracting tourists around the world to enjoy heritage and experience a unique journey through history and witnessing great civilizations, and the diversity of tourists causes the diversity of needs, services and rehabilitation that makes the tourist enjoy the entire trip, as research shows that making buildings more accessible can lead to an increase in the number of visitors. However, some historical areas in Egypt still suffer from lack of rehabilitation and full accessibility for persons with disabilities. Therefore, this research paper aims to study the access problems and challenges that stand …
The Possibilities Of Explicit Striga (Striga Asiatica) Risk Monitoring Using Phenometric, Edaphic, And Climatic Variables, Demonstrated For Malawi And Zambia, Emily Kimathi, Bester Tawona Mudereri, Elfatih M. Abdel-Rahman, Saliou Niassy, Henri E.Z. Tonnang, Tobias Landmann
The Possibilities Of Explicit Striga (Striga Asiatica) Risk Monitoring Using Phenometric, Edaphic, And Climatic Variables, Demonstrated For Malawi And Zambia, Emily Kimathi, Bester Tawona Mudereri, Elfatih M. Abdel-Rahman, Saliou Niassy, Henri E.Z. Tonnang, Tobias Landmann
All Peer-Reviewed Publications
Food insecurity continues to affect more than two-thirds of the population in sub‐Saharan Africa (SSA), particularly those depending on rain-fed agriculture. Striga, a parasitic weed, has caused yield losses of cereal crops, immensely affecting smallholder farmers in SSA. Although earlier studies have established that Striga is a constraint to crop production, there is little information on the spatial extent of spread and infestation severity of the weed in some SSA countries like Malawi and Zambia. This study aimed to use remotely sensed vegetation phenological (n = 11), climatic (n = 3), and soil (n = 4) variables to develop a …
Essential Property, Timothy M. Mulvaney, Joseph William Singer
Essential Property, Timothy M. Mulvaney, Joseph William Singer
Faculty Scholarship
For a sizable swath of the U.S. population, incomes and wealth are insufficient to cover life’s most basic necessities even in the most ordinary of times. A disturbingly resilient explanation for this state of affairs rests on the view that resource inequities are avoidable through self-reliance, a stance that invites observers to see people in poverty as morally suspect. This Article advances a counterview in contending that the widespread lack of essential resources did not simply arise naturally via individuals’ life choices but instead has been, in very meaningful part, created and perpetuated by our system of property laws.
The …
Investigating Attention Modeling Differences Between Older And Younger Drivers, Kathryn Baringer
Investigating Attention Modeling Differences Between Older And Younger Drivers, Kathryn Baringer
All Theses
As in-vehicle technologies (IVTs) grow in both popularity and complexity, the question of whether these IVTs improve, or hinder, driver performance has gained more attention. The ability to predict when a driver will be looking at the road or a display on the car’s dashboard or center console is crucial to understanding the impact of the recent tech-heavy trend in car designs on safety and the extent to which IVTs compete with the primary driving task for visual resources. The SEEV model of visual attention has been shown to be able to predict the probability of attending an area if …
The Fractal Geometry Of Grand Rapids, Nathan Vandermeer
The Fractal Geometry Of Grand Rapids, Nathan Vandermeer
Honors Projects
The fractal nature of cities' geometry has been widely studied. By analyzing a city's fractal pattern, we can obtain its fractal dimension, or measure of how complex it is. We will create models on how Grand Rapids' complexity changed since its inception, and use those models to predict what the complexity is like today.
Mental Health Concerns In The Pediatric Population Following Covid-19, Kristina N. Yaczik, Ashley M. Komosinski
Mental Health Concerns In The Pediatric Population Following Covid-19, Kristina N. Yaczik, Ashley M. Komosinski
Honors Projects
The COVID-19 pandemic has contributed to an increase in stress and mental health concerns in the pediatric population. Research indicates a decrease in pediatric mental health incidences in 2020, followed by an increase in 2021 and 2022. It is thought that the initial decrease may be due to the intensity of the pandemic at the time and a lack of hospital beds available. The increase suggests a response to the high levels of adversity and stress children and adolescents faced both during and after the origination of the pandemic. The evidence supports the idea that the COVID-19 pandemic had a …
Opening Pandora’S Box: Charles D’Orléans’S Reception And The Work Of Critical Bibliography: The 2022 Annual Meeting Keynote, Elizaveta Strakhov
Opening Pandora’S Box: Charles D’Orléans’S Reception And The Work Of Critical Bibliography: The 2022 Annual Meeting Keynote, Elizaveta Strakhov
English Faculty Research and Publications
No abstract provided.
Informal Education Experiences Of Black Women-Owned Healthcare Small Businesses In Mississippi, Timothy E. Lampkin
Informal Education Experiences Of Black Women-Owned Healthcare Small Businesses In Mississippi, Timothy E. Lampkin
Graduate Theses and Dissertations
Small businesses are critical to the economic success of the United States, and several states, such as Mississippi, have a strong reliance on small business development. Through small, individually owned businesses, the overall economy is enhanced, and the quality of life for many is improved. A growing trend within the small business community is private ownership by Black women. This population segment has dramatically grown in their presence within business ownership, and it is necessary to describe elements of their success. The proposed research focuses on informal education as an enabler of this small business success. Informal education is a …
Swach 2022 Workforce Report: Understanding The Experiences Of The Healthconnect Hub Workforce, Natalie Royal Kenton, Benjamin Gronowski, Raven Susu-Mago, Abby Bush
Swach 2022 Workforce Report: Understanding The Experiences Of The Healthconnect Hub Workforce, Natalie Royal Kenton, Benjamin Gronowski, Raven Susu-Mago, Abby Bush
Articles, Abstracts, and Reports
No abstract provided.
Scaling Investment In Renewable Energy Generation To Achieve Sustainable Development Goals 7 (Affordable And Clean Energy) And 13 (Climate Action) And The Paris Agreement: Roadblocks And Drivers, Mithatcan Aydos, Perrine Toledano, Martin Dietrich Brauch, Ladan Mehranvar, Theodoros Iliopoulos, Sunayana Sasmal
Scaling Investment In Renewable Energy Generation To Achieve Sustainable Development Goals 7 (Affordable And Clean Energy) And 13 (Climate Action) And The Paris Agreement: Roadblocks And Drivers, Mithatcan Aydos, Perrine Toledano, Martin Dietrich Brauch, Ladan Mehranvar, Theodoros Iliopoulos, Sunayana Sasmal
Columbia Center on Sustainable Investment
The zero-carbon energy transition is the solution to the 2022 energy crisis and a fundamental part of the solution to the global climate crisis. Yet, there are relatively low levels of investment in renewable energy in developing countries, hindering their achievement of the Sustainable Development Goals (SDGs) and contribution to the Paris Agreement goals.
In 2021, the Asia–Pacific region (excluding China) accounted for less than 8% of investments in energy transition technologies, Latin America and the Caribbean for less than 4%, and Africa and the Middle East for less than 2%. Annual investment in zero-carbon energy in developing economies other …
Scaling Investment In Renewable Energy: Roadblocks And Drivers – Executive Summary, Mithatcan Aydos, Perrine Toledano, Martin Dietrich Brauch, Ladan Mehranvar, Theodoros Iliopoulos, Sunayana Sasmal
Scaling Investment In Renewable Energy: Roadblocks And Drivers – Executive Summary, Mithatcan Aydos, Perrine Toledano, Martin Dietrich Brauch, Ladan Mehranvar, Theodoros Iliopoulos, Sunayana Sasmal
Columbia Center on Sustainable Investment
The zero-carbon energy transition is the solution to the 2022 energy crisis and a fundamental part of the solution to the global climate crisis. Yet, there are relatively low levels of investment in renewable energy in developing countries, hindering their achievement of the Sustainable Development Goals (SDGs) and contribution to the Paris Agreement goals.
In 2021, the Asia–Pacific region (excluding China) accounted for less than 8% of investments in energy transition technologies, Latin America and the Caribbean for less than 4%, and Africa and the Middle East for less than 2%. Annual investment in zero-carbon energy in developing economies other …
Openet: Filling A Critical Data Gap In Water Management For The Western United States, Forrest S. Melton, Justin Huntington, Robyn Grimm, Jamie Herring, Maurice Hall, Dana Rollison, Tyler Erickson, Richard Allen, Martha Anderson, Joshua B. Fisher, Ayse Kilic, Gabriel B. Senay, John Volk, Christopher Hain, Lee Johnson, Anderson Ruhoff, Philip Blankenau, Matt Bromley, Will Carrara, Britta Daudert, Conor Doherty, Christian Dunkerly, Mackenzie Friedrichs, Alberto Guzman, Gregory Halverson, Jody Hansen, Jordan Harding, Yanghui Kang, David Ketchum, Blake Minor, Charles Morton, Samuel Ortega-Salazar, Thomas Ott, Mutlu Ozdogan, Peter M. Revelle, Mitch Schull, Carlos Wang, Yun Yang, Ray G. Anderson
Openet: Filling A Critical Data Gap In Water Management For The Western United States, Forrest S. Melton, Justin Huntington, Robyn Grimm, Jamie Herring, Maurice Hall, Dana Rollison, Tyler Erickson, Richard Allen, Martha Anderson, Joshua B. Fisher, Ayse Kilic, Gabriel B. Senay, John Volk, Christopher Hain, Lee Johnson, Anderson Ruhoff, Philip Blankenau, Matt Bromley, Will Carrara, Britta Daudert, Conor Doherty, Christian Dunkerly, Mackenzie Friedrichs, Alberto Guzman, Gregory Halverson, Jody Hansen, Jordan Harding, Yanghui Kang, David Ketchum, Blake Minor, Charles Morton, Samuel Ortega-Salazar, Thomas Ott, Mutlu Ozdogan, Peter M. Revelle, Mitch Schull, Carlos Wang, Yun Yang, Ray G. Anderson
AES Faculty Publications and Presentations
The lack of consistent, accurate information on evapotranspiration (ET) and consumptive use of water by irrigated agriculture is one of the most important data gaps for water managers in the western United States (U.S.) and other arid agricultural regions globally. The ability to easily access information on ET is central to improving water budgets across the West, advancing the use of data-driven irrigation management strategies, and expanding incentive-driven conservation programs. Recent advances in remote sensing of ET have led to the development of multiple approaches for field-scale ET mapping that have been used for local and regional water resource management …
Opening The Vault: An Osteobiography Of Three Individuals From A New Orleans Cemetery, Jordan Butler
Opening The Vault: An Osteobiography Of Three Individuals From A New Orleans Cemetery, Jordan Butler
Honors Theses
The purpose of this study is to reconstruct the lives of three individuals buried in Cypress Grove Cemetery in New Orleans through osteobiographies, which combines knowledge gained from human remains, material culture, and mortuary practices. The opportunity for analysis arose since the vault was being demolished due to its dilapidated condition.
The individuals were White and of middle-class status and date to the later nineteenth century. One burial is a middle-aged man who was of average height and showed no evidence of pathology; his muscle markers do suggest he was relatively Physically active during his life. Another individual is an …
Examining The Association Between Facebook Marketing And Applications Received In Graduate Programs At One University, Heather Danielle Campbell
Examining The Association Between Facebook Marketing And Applications Received In Graduate Programs At One University, Heather Danielle Campbell
Graduate Theses and Dissertations
As the technological world continues to grow and expand, the use of social media marketing continues to increase. Graduate programs looking to increase the number of applications received can turn to Facebook to market their programs. This study looks at the use of self-presentation, from a graduate program level of Facebook use, to create content that reaches their target audience. Self-presentation allows graduate programs to control the types of marketing, posts, and content displayed regarding their program in an effort to be seen in a certain light. This study explores six types of Facebook content perceived as favorable in the …
The Human Natural Resource Endowment Of Limestone For Cement Manufacturing, Vanya Marie North
The Human Natural Resource Endowment Of Limestone For Cement Manufacturing, Vanya Marie North
Graduate Theses and Dissertations
This study investigates the total per-capita allocation of limestone globally. Termed the Human Natural Resource Endowment (HNRE), it is calculated by subtracting the cumulative annual production from the ultimately recoverable reserve (URR) of limestone and dividing the difference by global population. HNRE represents a unique way of visualizing resource depletion by asking how much of a given resource can be allocated to each person on earth, and how long that allocation can last given multiple population and usage scenarios. The average American, born in 2021, will use approximately 23,930 kgs of cement in their lifetime, with similar demands globally. Demand …
Data-Driven Deep Learning-Based Analysis On Thz Imaging, Haoyan Liu
Data-Driven Deep Learning-Based Analysis On Thz Imaging, Haoyan Liu
Graduate Theses and Dissertations
Breast cancer affects about 12.5% of women population in the United States. Surgical operations are often needed post diagnosis. Breast conserving surgery can help remove malignant tumors while maximizing the remaining healthy tissues. Due to lacking effective real-time tumor analysis tools and a unified operation standard, re-excision rate could be higher than 30% among breast conserving surgery patients. This results in significant physical, physiological, and financial burdens to those patients. This work designs deep learning-based segmentation algorithms that detect tissue type in excised tissues using pulsed THz technology. This work evaluates the algorithms for tissue type classification task among freshly …
Efficient Hierarchical Space-Time Models For Large Areal Datasets With Application To Forest Inventory Mapping Using Remote Sensing Imagery, Md Kamrul Hasan Khan
Efficient Hierarchical Space-Time Models For Large Areal Datasets With Application To Forest Inventory Mapping Using Remote Sensing Imagery, Md Kamrul Hasan Khan
Graduate Theses and Dissertations
The focus of this dissertation is development of a novel hierarchical framework, that can be used for predictive modeling of Forest Inventory and Analysis (FIA) data over large regions. This dissertation has two significant contributions. Based on a study region in north-central Wisconsin, we analyze satellite imagery, along with a sample of national forest inventory field plots, to monitor and predict changes in forest conditions over time. The auxiliary data from the satellite imagery of this region are relatively dense in space and time, and can be used to learn how forest conditions changed over that decade. However, these records …
An Investigation Of Tax Assessors’ Perception Of The Relationship Between Proactive Career Management Behaviors (Pcmbs) And Career Success: Determining The Most Valuable Career Management Behaviors, Daniel K. Berry
Graduate Theses and Dissertations
The purpose of this study was to investigate government and private-sector tax assessors’ perceptions of the relationship between proactive career management behaviors (PCMBs) and career success. The findings of the study established a foundation to assist government and private-sector tax assessor organizations with developing the human capital within and the careers of their employees. The study’s findings revealed that all four of the PCMBs (career planning, career self-exploration, environmental career exploration, and voluntary human capital development) had significant relationships to career success when tested with a multiple regression model. The study’s findings also revealed that there was no significant difference …
Delineating Field Variation Using Apparent Electrical Conductivity In An Ozark Highlands Agroforestry System, Shane Reid Ylagan
Delineating Field Variation Using Apparent Electrical Conductivity In An Ozark Highlands Agroforestry System, Shane Reid Ylagan
Graduate Theses and Dissertations
Little to no work has been conducted assessing field variability using repeated electromagnetic induction (EMI) apparent electrical conductivity (ECa) surveys in agroforestry (AF) systems within regions similar to the Ozark Highlands. The objectives of this thesis were to identify i) spatiotemporal ECa variability; ii) ECa-derived soil management zones (SMZs); iii) correlations among EMI-ECa and in-situ, sentential-site soil properties; iv) whether fewer, EMI-ECa surveys could be conducted to capture similar ECa variance as mid-monthly EMI-ECa surveys; v) correlations between ECa and forage yield, tree growth, and terrain attributes based on plant (forage and tree) species, and fertility treatments, and ECa-derived SMZs, …
Deciphering Surfaces Of Trans-Neptunian And Kuiper Belt Objects Using Radiative Scattering Models, Machine Learning, And Laboratory Experiments, Al Emran
Graduate Theses and Dissertations
Decoding surface-atmospheric interactions and volatile transport mechanisms on trans-Neptunian objects (TNOs) and Kuiper Belt objects (KBOs) involves an in-depth understanding of physical and thermal properties and spatial distribution of surface constituents – nitrogen (N2), methane (CH4), carbon monoxide (CO), and water (H2O) ices. This thesis implements a combination of radiative scattering models, machine learning techniques, and laboratory experiments to investigate the uncertainties in grain size estimation of ices, the spatial distribution of surface compositions on Pluto, and the thermal properties of volatiles found on TNOs and KBOs. Radiative scattering models (Mie theory and Hapke approximations) were used to compare single …
Forging Community In The Ouachita Foothills Of Southwest Arkansas: Duckett Township, Homesteading, Distilling And Race, Lisa C. Childs
Forging Community In The Ouachita Foothills Of Southwest Arkansas: Duckett Township, Homesteading, Distilling And Race, Lisa C. Childs
Graduate Theses and Dissertations
Community was key to successful subsistence agriculture in Arkansas, especially in the Ouachita foothills in southwest Arkansas (including Polk, Howard, Montgomery, Pike, Garland Counties) and Oklahoma (McCurtain, Pittsburgh, LeFlore Counties) until the 1940s. Nearly a quarter of Arkansas’s land remained in the federal government’s name twenty years after statehood, and even more of the land in the western Ouachita foothills. Much remains unknown about how farming communities were formed in this area from the end of the Civil War until approximately World War II. As seen in the Duckett community in northern Howard County, while family connections were important to …
Precision Weed Management Based On Uas Image Streams, Machine Learning, And Pwm Sprayers, Jason Allen Davis
Precision Weed Management Based On Uas Image Streams, Machine Learning, And Pwm Sprayers, Jason Allen Davis
Graduate Theses and Dissertations
Weed populations in agricultural production fields are often scattered and unevenly distributed; however, herbicides are broadcast across fields evenly. Although effective, in the case of post-emergent herbicides, exceedingly more pesticides are used than necessary. A novel weed detection and control workflow was evaluated targeting Palmer amaranth in soybean (Glycine max) fields. High spatial resolution (0.4 cm) unmanned aircraft system (UAS) image streams were collected, annotated, and used to train 16 object detection convolutional neural networks (CNNs; RetinaNet, Faster R-CNN, Single Shot Detector, and YOLO v3) each trained on imagery with 0.4, 0.6, 0.8, and 1.2 cm spatial resolutions. Models were …