Digital Commons Network^™

Approaches To Controlling Palmer Amaranth And Its Interference In Furrow-Irrigated Rice, Tanner Austin King

Graduate Theses and Dissertations

Palmer amaranth (Amaranthus palmeri S. Wats) is the most troublesome and problematic weed in most mid-southern U.S. row crop production systems. With the increased adoption of furrow-irrigated rice (Oryza sativa L.), there is a greater occurrence of Palmer amaranth due to sustained moist conditions allowing continual emergence of the weed throughout the growing season. Palmer amaranth has previously been shown to negatively affect crop yields when left unmanaged. Therefore, there is a high potential for rice yield loss due to the weed’s ability to emerge over an extended period and interfere with crop development. However, there is a lack of …

Evaluation Of A Diflufenican:Metribuzin:Flufenacet Premixture For Soybean Tolerance And Weed Control, Matthew Coleman Woolard

Graduate Theses and Dissertations

Palmer amaranth [Amaranthus palmeri (S.) Wats.] and waterhemp [Amaranthus tuberculatus (Moq.) Sauer] ranks among the most troublesome weeds of soybean [Glycine max (L.) Merr.], having evolved resistance to multiple herbicide sites of action. Bayer CropScience has announced its intentions to launch Convintro™ brand herbicides, one being a three-way premixture for use preplant until 3 d after planting in soybean. The premixture will include diflufenican (WSSA Group 12), metribuzin (WSSA Group 5), and flufenacet (WSSA Group 15) (DFF-containing premixture), adding a new site of action for use in soybean throughout the United States. In 2022 and 2023, field trials were conducted …

Cancer Heterogeneity And Mitochondrial-Targeted Therapies In Cancer Cachexia, Francielly Morena Clark

Graduate Theses and Dissertations

Cancer Cachexia (CC) is a multifactorial and complex syndrome affecting up to 80% of cancer patients and contributing to approximately 40% of cancer-related deaths. Given its relationship with patients' quality of life and prognosis, there has been increasing emphasis on understanding the underlying mechanisms of CC using pre-clinical models. However, the mechanisms of cachexia vary depending on several factors, including tumor type, model, and biological variables such as sex. RNA-sequencing technology is a crucial tool for investigating CC heterogeneity, enabling the analysis of the transcriptome across different models, conditions, and sexes using publicly available data. Aim 1 of this dissertation …

Alternative Methods For Finishing Beef Cattle: Effects On Performance, Carcass Quality, And Meat Characteristics, Michelle Johnson

Graduate Theses and Dissertations

The objective of these studies was to evaluate the effects of alternative finishing methods on the live performance, carcass quality, and meat characteristics of beef steers. In study 1, treatments consisted of a conventional feedlot finishing diet with roughage included in the ration (FDLT); a high starch diet fed at 2-2.25% of BW with ad libitum access to bermudagrass pastures (STCH); or a high by-product diet fed at 2-2.25% of BW with ad libitum access to bermudagrass pastures (BYPD). Steers were fed their respective diets once daily and weighed every 28 days until deemed finished. Cattle were then transported and …

Psychophysiological Insights Into Child-Centered Play Therapy For Trauma: A Case Study, Kristi L. Perryman, Samantha Robinson, Timothy J. Schoonover, Julia Conroy

Counseling, Leadership, and Research Methods Faculty Publications and Presentations

Existing literature thoroughly reviews the detrimental consequences that adverse childhood experiences (ACEs) have physically, emotionally, neurobiologically, and financially. It is imperative to develop effective treatments that offer a sense of hope to children who have been impacted. The established relationship between high ACE scores and physiological hyperarousal due to emotional dysregulation is clear in the literature. This relationship indicates that taking psychophysiological measures may be an effective method of gauging the effectiveness of trauma treatments. This study measured the heart rate of a child who had experienced multiple ACEs, during 16 child-centered play therapy (CCPT) sessions, using the Empatica (E4) …

Risk Of Invasive Waterfowl Interaction With Poultry Production: Understanding Potential For Avian Pathogen Transmission Via Species Distribution Models, Reilly T. Jackson, Percival Matzinger Marshall, Chris R. Burkhart, Julia Schneck, Grant Kelly, Caleb P. Roberts

Biological Sciences Faculty Publications and Presentations

Recent outbreaks of highly pathogenic avian influenza have devastated poultry production across the United States, with more than 77 million birds culled in 2022–2024 alone. Wild waterfowl, including various invasive species, host numerous pathogens, including highly pathogenic avian influenza virus (HPAIV), and have been implicated as catalysts of disease outbreaks among native fauna and domestic birds. In major poultry-producing states like Arkansas, USA, where the poultry sector is responsible for significant economic activity (>$4 billion USD in 2022), understanding the risk of invasive waterfowl interactions with domestic poultry is critical. Here, we assessed the risk of invasive waterfowl-poultry interaction …

(Hidden) In Plain Sight: Migrant Child Labor And The New Economy Of Exploitation, Shefali Milczarek-Desai

Arkansas Law Review

Oppressive child labor in America is both an age-old problem and one that is relatively new. Part I presents the tumultuous history of child labor regulation in the United States—a history that provides clues as to why contemporary child labor laws fall far short of comprehensively addressing oppressive, migrant child labor. It then pivots to the contemporary child labor crisis by describing the new economy of exploitation and the unaccompanied migrant children upon which it relies. Part II sets forth the current U.S. legal landscape surrounding child labor laws, including these laws’ failure to protect migrant children. Next, Part II …

Efficacy Of Liver Free And Chitosan Against Eimeria Tenella In Chickens, Zhang Yu, Abdulaziz Alouffi, Ebtsam Al-Olayan, Gungor Cagdas Dincel, G. Tellez-Isaias, Inkar Castellanos-Huerta, Danielle Graham, Victor M. Petrone-Garcia, Beniamino T. Cenci-Goga, Luca Grispoldi, Luis Madeiro De Carvalho, Saeed El-Ashram

Poultry Science Faculty Publications and Presentations

Eimeria spp. are the pathogen that causes coccidiosis, a significant disease that affects intensively reared livestock, especially poultry. Anticoccidial feed additives, chemicals, and ionophores have routinely been employed to reduce Eimeria infections in broiler production. Therefore, the shift to antibiotic-free and organic farming necessitates novel coccidiosis preventive strategies. The present study evaluated the effects of potential feed additives, liver free and chitosan, against Eimeria tenella infection in White Leghorn broiler female chickens. One hundred sixty-five 1-day-old White Leghorn broiler female chicks were divided into 11 groups (15 female chicks per group), including the positive control group (G1), the negative control …

A Versatile, Semi-Automated Image Analysis Workflow For Time-Lapse Camera Trap Image Classification, Gerardo Celis, Peter Ungar, Aleksandr Sokolov, Natalia Sokolova, Hannah Bohner, Desheng Liu, Olivier Gilg, Ivan Fufachev, Olga Pokrovskaya, Rolf Anker Ims, Wenbo Zhou, Dan Morris, Dorothee Ehrich

Anthropology Faculty Publications and Presentations

Camera traps are a powerful, practical, and non-invasive method used widely to monitor animal communities and evaluate management actions. However, camera trap arrays can generate thousands to millions of images that require significant time and effort to review. Computer vision has emerged as a tool to accelerate this image review process. We propose a multi-step, semi-automated workflow which takes advantage of site-specific and generalizable models to improve detections and consists of (1) automatically identifying and removing low-quality images in parallel with classification into animals, humans, vehicles, and empty, (2) automatically cropping objects from images and classifying them (rock, bait, empty, …

Isolation Of Naegleria Lustrarea N. Sp. (Excavata, Discoba, Heterolobosea) From The Feces Of Ambystoma Annulatum (Ringed Salamander) In Northwest Arkansas, Brian M. Becker, Idan Banson, James M. Walker, Anant Deshwal, Matthew W. Brown, Jeffrey D. Silberman

Biological Sciences Faculty Publications and Presentations

The salamander, Ambystoma annulatum, is considered a “species of special concern” in the state of Arkansas, USA, due to its limited geographic range, specialized habitat requirements and low population size. Although metazoan parasites have been documented in this salamander species, neither its native protists nor microbiome have yet been evaluated. This is likely due to the elusive nature and under-sampling of the animal. Here, we initiate the cataloguing of microbial associates with the identification of a new heterlobosean species, Naegleria lustrarea n. sp. (Excavata, Discoba, Heterolobosea), isolated from feces of an adult A. annulatum.

Exploring The Effects Of An Alfalfa Leaf-Derived Adsorbent On Microbial Community, Ileal Morphology, Barrier Function, And Immunity In Turkey Poults During Chronic Aflatoxin B1 Exposure, Maria De Jesus Nava-Ramirez, Jing Liu, Juan Omar Hernandez-Ramirez, Xochitl Hernandez-Velasco, Juan D. Latorre, Alma Vazquez-Duran, Guolong Zhang, Roberto Señas-Cuesta, Sergio Gomez-Rosales, Andressa Stein, Billy M. Hargis, Guillermo Tellez-Isaias, Abraham Mendez-Albores, Jesus A. Maguey-Gonzalez

Poultry Science Faculty Publications and Presentations

This article follows-up on our recently published work, which evaluated the impact of the addition of an alfalfa leaf-derived adsorbent in the aflatoxin B₁ (AFB₁)-contaminated diet in regard to the production parameters, blood cell count, serum biochemistry, liver enzymes, and liver histology of turkey poults. This paper presents complementary results on microbial community, ileal morphology, barrier function, and immunity. For this purpose, 350 1-day-old female turkey poults were randomly distributed into five groups: (1) Control, AFB₁-free diet; (2) AF, AFB₁-contaminated diet at 250 ng/g; (3) alfalfa, AFB₁-free diet + 0.5% ( …

Increased Co2 Levels During The First Half Of Incubation At High Altitude Modifies Embryonic Development Of Fertile Leghorn Breeder Eggs, Marco A. Juarez-Estrada, Erik I. Lopez-Ruiz, Sonia Lopez-Cordova, G. Tellez-Isaias, Omar F. Prado-Rebolledo

Political Science Faculty Publications and Presentations

The exchange of oxygen (O₂) and carbon dioxide (CO₂) within an incubator has a significant impact on embryonic development (ED) and hatching processes. This study examines the influence of non-ventilation (NV) conditions during the first ten days of incubation at high altitudes on Leghorn hens hatching eggs. Five hundred four hatching eggs were equally divided into three treatment groups and placed in twelve incubators (R = 4). The first group was subjected to standard ventilated conditions (V) during the setting phase. The ventilation inlet holes of the remaining incubators in the NV treatments were closed with …

Mitigating Toxic Metal Exposure Through Leafy Greens: A Comprehensive Review Contrasting Cadmium And Lead In Spinach, Angelia L. Seyfferth, Matthew A. Limmer, Benjamin R. Runkle, Rufus L. Chaney

Biological Sciences Faculty Publications and Presentations

Metals and metalloids (hereafter, metal(loid)s) in plant-based foods are a source of exposure to humans, but not all metal(loid)-food interactions are the same. Differences exist between metal(loid)s in terms of their behavior in soils and in how they are taken up by plants and stored in the edible plant tissue/food. Thus, there cannot be one consistent solution to reducing toxic metal(loid)s exposure to humans from foods. In addition, how metal(loid)s are absorbed, distributed, metabolized, and excreted by the human body differs based on both the metal(loid), other elements and nutrients in the food, and the nutritional status of the human. …

Current And Future Environmental Suitability For Bats Hosting Potential Zoonotic Pathogens In Rural Kenya, Ruut Uusitalo, Reilly T. Jackson, Tamika J. Lunn, Essi M. Kohonen, Joseph G. Ogala, Paul W. Wabala, Tarja A. Sironen, Kristian M. Forbes

Biological Sciences Faculty Publications and Presentations

Synanthropic bats live in close proximity to humans and domestic animals, creating opportunities for potential pathogen spillover. We explored environmental correlates of occurrence for a widely distributed synanthropic African bat, Mops pumilus—a species associated with potential zoonotic viruses—and estimated current and future environmental suitability in the Taita Hills region and surrounding plains in Taita–Taveta County in southeast Kenya. To project future environmental suitability, we used four Coupled Model Intercomparison Project Phase 6 general circulation models that capture temperature and precipitation changes for East Africa. The models were parameterized with empirical capture data of M. pumilus collected …

Slime Molds (Myxomycetes) Causing A “Disease” In Crop Plants And Cultivated Mushrooms, Zhaojuan Zhang, Chao Zhi, Yu Li, Steven L. Stephenson, Pu Liu

Biological Sciences Faculty Publications and Presentations

Myxomycetes (plasmodial slime molds) are eukaryotic protist predators that are associated with wood, leaf litter, and soil in forests, where they feed on bacteria, protozoans, and (to a more limited extent) fungi. The health of crop plants is essential because they represent a primary food source for humans. However, when myxomycetes produce numerous fruiting bodies on the stems and leaves of crop plants, which is herein referred to as a myxomycete colonization, this has the potential of interfering with plant photosynthesis, transpiration and respiration by blocking out light and covering stomata. Myxomycetes are not pathogens, but their occurrence on plants …

Editorial: The Gut-Skin Axis: Interaction Of Gut Microbiome And Skin Diseases, Jianmin Chai, Feilong Deng, Ying Li, Xiaoyuan Wei, Jiangchao Zhao

Animal Science Faculty Publications and Presentations

Editorial on the Research Topic: The gut-skin axis: interaction of gut microbiome and skin diseases

Identifying Dietary Timing Of Organic Trace Minerals To Reduce The Incidence Of Osteomyelitis Lameness In Broiler Chickens Using The Aerosol Transmission Model, Khawla Alharbi, Andi Asnayanti, Anh Dang Trieu Do, Ruvindu Perera, Layla Al-Mitib, Abdulkarim Shwani, Marco A. Rebollo, Michael T. Kidd, Adnan Ali Khalaf Alrubaye

Poultry Science Faculty Publications and Presentations

Our prior research demonstrated a 20% to 25% reduction in bacterial chondronecrosis with osteomyelitis (BCO) lameness in broilers with organic Zn, Mn, and Cu (Availa^® ZMC) supplementation. Expanding on this, we investigated the optimal timing for Availa^® ZMC feeding to mitigate BCO lameness and reduce feed additive costs in the poultry industry. In this study, we compared the application of 0.15% Availa^® ZMC for 56 days, the first 28 days, and the last 28 days. The experimental design was a randomized block design involving 1560 one-day-old chicks distributed across two wire-floor pens as BCO source infection and …

Applied Research Note: Microbial Composition Of The Biofilm Of Poultry Drinking Water System, T. T. Ogundipe, S. Beitia, T. Obe

Poultry Science Faculty Publications and Presentations

Ensuring good water quality is one of the key management strategies to promote optimal broiler health and performance. A few studies have assessed the microbial status of drinking water for poultry, but there is insufficient information on biofilm in the drinking water lines within the poultry housing facilities. The buildup of microbes in the drinking water system could potentially result in biofilm formation which eventually deteriorates water quality. Hence, in this preliminary study, we sought to evaluate biofilm formation in the drinking water lines of selected broiler houses and characterize their microbial composition. Three random houses in each of 5 …

Applied Research Note: Microbial Composition Of The Biofilm Of Poultry Drinking Water System, T. T. Ogundipe, S. Beitia, T. Obe

Poultry Science Faculty Publications and Presentations

Ensuring good water quality is one of the key management strategies to promote optimal broiler health and performance. A few studies have assessed the microbial status of drinking water for poultry, but there is insufficient information on biofilm in the drinking water lines within the poultry housing facilities. The buildup of microbes in the drinking water system could potentially result in biofilm formation which eventually deteriorates water quality. Hence, in this preliminary study, we sought to evaluate biofilm formation in the drinking water lines of selected broiler houses and characterize their microbial composition. Three random houses in each of 5 …

Titration Of Dietary Histidine During A 22-To 42-Day Feeding Phase Following A 0-To 21-Day Feeding Phase With Variable Dietary Histidine Concentrations In Female Cobb 500 Broilers, Kenneth B. Nelson, Matheus F. Costa, Savannah C. Wells-Crofton, Shivaram K. Rao, Garrett J. Mullenix, Craig W. Maynard, Michael T. Kidd

Poultry Science Faculty Publications and Presentations

Further reductions of crude protein in broiler diets may cause essential amino acids traditionally considered to be supplied at adequate levels to become limiting. Requirement data for histidine are currently scarce and this amino acid is uniquely able to be stored within the body. Thus, the objectives of this study were to evaluate female Cobb 500 broiler growth performance and carcass characteristic responsiveness to increasing digestible histidine to digestible lysine ratios (dHis:dLys) during a 22- to 42-day feeding period and determine if dHis:dLys in preceding feeds influence the former responses. Starter diets were formulated to contain dHis:dLys of 33% or …

Effects Of Food Supplementation And Helminth Removal On Space Use And Spatial Overlap In Wild Rodent Populations, Janine Mistrick, Jasmin S.M. Veitch, Shannon M. Kitchen, Samuel Clague, Brent C. Newman, Richard J. Hall, Sarah A. Budischak, Kristian M. Forbes, Megan E. Craft

Biological Sciences Faculty Publications and Presentations

• Animal space use and spatial overlap can have important consequences for population-level processes such as social interactions and pathogen transmission. Identifying how environmental variability and inter-individual variation affect spatial patterns and in turn influence interactions in animal populations is a priority for the study of animal behaviour and disease ecology. Environmental food availability and macroparasite infection are common drivers of variation, but there are few experimental studies investigating how they affect spatial patterns of wildlife.
• Bank voles (Clethrionomys glareolus) are a tractable study system to investigate spatial patterns of wildlife and are amenable to experimental manipulations. We conducted …

Recombinant Bile Salt Hydrolase Enhances The Inhibition Efficiency Of Taurodeoxycholic Acid Against Clostridium Perfringens Virulence, Tahrir Alenezi, Bilal Alrubaye, Ying Fu, Janashrit Shrestha, Samar Algehani, Hong Wang, Rohana Liyanage, Xiaolun Sun

Chemistry & Biochemistry Faculty Publications and Presentations

Clostridium perfringens is the main pathogen of chicken necrotic enteritis (NE) causing huge economic losses in the poultry industry. Although dietary secondary bile acid deoxycholic acid (DCA) reduced chicken NE, the accumulation of conjugated tauro-DCA (TDCA) raised concerns regarding DCA efficacy. In this study, we aimed to deconjugate TDCA by bile salt hydrolase (BSH) to increase DCA efficacy against the NE pathogen C. perfringens. Assays were conducted to evaluate the inhibition of C. perfringens growth, hydrogen sulfide (H₂S) production, and virulence gene expression by TDCA and DCA. BSH activity and sequence alignment were conducted to select the …

Brown Midrib (Bmr) And Plant Age Impact Fall Armyworm (Spodoptera Frugiperda) Growth And Development In Sorghum-Sudangrass (Sorghum X Drummondii), Alejandro Vasquez, Devi Balakrishnan, Jessica Ayala, Kelly Loftin, Joe Louie, Rupesh Kariyat

Entomology and Plant Pathology Faculty Publications and Presentations

Economic losses from insect herbivory in agroecosystems has driven the development of integrated pest management strategies that reduce pest incidence and damage; however, traditional chemicals-based control is either being complemented or substituted with sustainable and integrated methods. Major sustainable pest management strategies revolve around improving host plant resistance, and one of these traits of interest is Brown midrib (BMR). Originally developed to increase nutritional value and ease of digestion for animal agriculture, BMR is a recessive plant gene usually found in annual grasses, including sorghum and sorghum-sudangrass hybrids. In sorghum-sudangrass, BMR expressed plants have lower amounts of lignin, which produces …

Assessing The Impact Of Spirulina Platensis And Organic Trace Minerals On The Incidence Of Bacterial Chondronecrosis With Osteomyelitis Lameness In Broilers Using An Aerosol Transmission Model, Andi Asnayanti, Amer Hasan, Khawla Alharbi, Intisar Abdullah Hassan, Walter Bottje, Samuel J. Rochell, Marco A. Rebollo, Michael T. Kidd, Adnan A.K. Alrubaye

Poultry Science Faculty Publications and Presentations

Spirulina platensis is an emerging poultry diet source due to its essential nutrition and bioactive ingredients. Spirulina microalgae confers beneficial effects on broiler's growth performance, immune response, and antioxidant activity. We investigated the effect of Spirulina platensis on BCO lameness, one of the most driving factors for economic and animal well-being concerns in the poultry industry. Additionally, supplementation of Availa ZMC containing organic trace minerals – zinc, manganese, and copper – was shown to alleviate lameness by 20 to 25%. We hypothesized that pairing microalgae and organic trace minerals might confer a synergistic effect in reducing BCO. A 2 × …

Agronomic And Economic Productivity Of Summer Annual Forage Systems Under Different Poultry Litter Application Methods, Ivanelle Meyer, Michael P. Popp, Christine C. Nieman, Amanda J. Ashworth, Phillip R. Owens

Agricultural Economics and Agribusiness Faculty Publications and Presentations

Poultry litter (litter) is a nutrient dense fertilizer that increases nutritive value and yield in pastures in the mid-southern US. Nutrient losses due to runoff and nitrogen volatilization are common when broadcasting litter. As such, incorporating litter below the soil surface (subsurface) was evaluated in comparison to broadcasting in 2021 and 2022 by quantifying yield and nutritive value of annual forages. The study was a randomized complete block design with three forage treatments—sorghum-sudangrass only (Sorghum bicolor L.), cowpea only (Vigna unguiculata L.), and their mixture, and three litter application methods (broadcast, subsurface, and a no litter control). Litter …

Soil Profile Distribution Of Nutrients In Contrasting Soils Amended With Struvite And Other Conventional Phosphorus Fertilizers, Tatum Simms, Kristofor R. Brye, Trenton L. Roberts, Lauren F. Greenlee

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

Phosphorus (P) can be recovered from wastewater and used as an alternative fertilizer, namely, struvite [MgNH₄PO₄·6(H₂O)]. However, the soil mobility of wastewater-derived P and other nutrients needs to be evaluated. The objective of this study was to compare the vertical distribution of water-soluble (WS) soil P and other nutrients from a synthetic-wastewater-derived electrochemically precipitated struvite (ECST) to that from a chemically precipitated struvite (CPST), triple superphosphate (TSP), monoammonium phosphate (MAP), and a control in six soils from Arkansas (AR; loam [L] and silt loam [SiL]), Missouri (MO; SiL 1 and SiL 2), and Nebraska …

Microbial Symbiont-Based Detoxification Of Different Phytotoxins And Synthetic Toxic Chemicals In Insect Pests And Pollinators, Olivia Kline, Neelendra K. Joshi

Entomology and Plant Pathology Faculty Publications and Presentations

Insects are the most diverse form of life, and as such, they interact closely with humans, impacting our health, economy, and agriculture. Beneficial insect species contribute to pollination, biological control of pests, decomposition, and nutrient cycling. Pest species can cause damage to agricultural crops and vector diseases to humans and livestock. Insects are often exposed to toxic xenobiotics in the environment, both naturally occurring toxins like plant secondary metabolites and synthetic chemicals like herbicides, fungicides, and insecticides. Because of this, insects have evolved several mechanisms of resistance to toxic xenobiotics, including sequestration, behavioral avoidance, and enzymatic degradation, and in many …

Investigating The Relationship Between Hypoxia, Hypoxia-Inducible Factor 1, And The Optical Redox Ratio In Response To Radiation Therapy, Jesse D. Ivers, Nagavenkatasai Puvvada, Charles M. Quick, Narasimhan Rajaram

Biomedical Engineering Faculty Publications and Presentations

Significance

Radiation resistance is a major contributor to cancer treatment failure and is likely driven by multiple pathways. Multivariate visualization that preserves the spatial co-localization of factors could aid in understanding mechanisms of resistance and identifying biomarkers of response.

Aim

We aim to investigate the spatial and temporal relationship between hypoxia, hypoxia-inducible factor 1 (HIF-1α), and metabolism in response to radiation therapy in two cell lines of known radiation resistance and sensitivity.

Approach

Two-photon excited fluorescence and fluorescence lifetime imaging microscopy were used to quantify the optical redox ratio (ORR) and NAD(P)H fluorescent lifetime and bound fraction in frozen tumor …

The Effect Of Total Factor Productivity On The Food Security And Livelihood Vulnerability Of Farm Households In Bangladesh, Paresh Kumar Sarma, Mohammad Jahanghir Alam, Ismat Ara Begum, Adam M. Mckenzie

Agricultural Economics and Agribusiness Faculty Publications and Presentations

Food security and livelihood vulnerability are important issues for the economic sustainability of developing countries like Bangladesh. This study examines the influence of total factor productivity (TFP) on the livelihood vulnerability and food security of rice farming households in Bangladesh. Data from 1,841 rice farming households were extracted from the Bangladesh Integrated Household Survey (2015 and 2018) conducted by the International Food Policy Research Institute. Various statistical methods, such as the stochastic frontier model, principal component analysis, path analysis using structural equation modeling, and multivariate regression, were employed to analyze the data. The study utilizes a multivariate modeling approach that …

Two Heads Are Better Than One: Single Pilot Operation Threatens The Safety Of The Friendly Skies, Alexandria E. Rook

Arkansas Law Review

Boeing’s Maneuvering Characteristics Augmentation System (“MCAS”), an automated piloting system, is only supposed to handle aircraft operations in very specific circumstances. Despite devasting results with MCAS, Boeing has another automated piloting system on the horizon that poses even more grave risks: Single Pilot Operation (“SPO”). Boeing—along with Airbus—wants to replace one of the pilots in the cockpit of commercial airline flights with the new SPO technology it is developing. The FAA should not allow SPO technology to be implemented because it is premature, motivated by financial gain to the detriment of safety, and ignores the importance of professional judgment in …