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Articles 1861 - 1890 of 7189
Full-Text Articles in Entire DC Network
Cognitive Behavioral Therapy For Insomnia (Cbt-I): A Primer, Jamie Walker, Alexandria Muench, Michael L. Perlis, Ivan Vargas
Cognitive Behavioral Therapy For Insomnia (Cbt-I): A Primer, Jamie Walker, Alexandria Muench, Michael L. Perlis, Ivan Vargas
Psychological Science Faculty Publications and Presentations
Cognitive Behavioral Therapy for Insomnia (CBT-I) is a multi-component treatment for insomnia that targets difficulties with initiating and/or maintaining sleep and is delivered over the course of six to eight sessions. The primary focus of CBT-I is to address the perpetuating factors (according to the three-factor model of insomnia) that contribute to the development of chronic insomnia. Chronic insomnia is the most prevalent sleep disorder, occurring in approximately 6-10% of the population, and is a risk factor for multiple medical and psychiatric disorders. Despite its prevalence and morbidity, the widespread dissemination of CBT-I is not commensurate with insomnia's overall public …
Artificial Intelligence System For Automatic Imaging, Quantification, And Identification Of Arthropods In Leaf Litter And Pitfall Samples, Pierce Helton, Khoa Luu, Ashley Dowling
Artificial Intelligence System For Automatic Imaging, Quantification, And Identification Of Arthropods In Leaf Litter And Pitfall Samples, Pierce Helton, Khoa Luu, Ashley Dowling
Inquiry: The University of Arkansas Undergraduate Research Journal
It is well known that arthropods are the most diverse and abundant eukaryotic organisms on the planet. Museum and research collections have huge insect accumulations from expeditions conducted over history that contain specimens of both temporal and spatial value, including hundreds of thousands of species. This biodiversity data is inaccessible to the research community, resulting in a vast amount of “dark data”. The primary objective of this study is to develop an artificial intelligence-driven system for specimen identification that greatly minimizes the time and expertise required to identify specimens in atypical environments. Successful development will have profound impacts on both …
Journal Of The Arkansas Academy Of Science - Volume 76, 2022, Academy Editors
Journal Of The Arkansas Academy Of Science - Volume 76, 2022, Academy Editors
Journal of the Arkansas Academy of Science
No abstract provided.
Distal Urogenital Anatomy In The Male Wood Frog, Lithobates Sylvaticus (Anura: Ranidae), Stanley E. Trauth
Distal Urogenital Anatomy In The Male Wood Frog, Lithobates Sylvaticus (Anura: Ranidae), Stanley E. Trauth
Journal of the Arkansas Academy of Science
I investigated the microanatomy of the distal urogenital system of the male Wood Frog (Lithobates sylvaticus) from a small sample (n = 6) collected in northern Arkansas in February 2020. Specifically, my primary objectives were as follows: 1) to focus on the histology of the paired Wolffian (urogenital) ducts caudally from the kidneys to their merging with the urodeum of the cloaca, 2) to reveal the structure of the paired seminal vesicles (sperm storage structures), and 3) to compare epithelial morphologies between the distal urogenital tract and its neighboring distal alimentary tract. This information will promote a clearer …
A Study Of Dental Pathology In River Otters (Lontra Canadensis) In Arkansas, C. Renn Tumlison, Jimmie Harper, Karson Grant
A Study Of Dental Pathology In River Otters (Lontra Canadensis) In Arkansas, C. Renn Tumlison, Jimmie Harper, Karson Grant
Journal of the Arkansas Academy of Science
River otters (Lontra canadensis) consume a variety of foods, including mussels, fishes, and crayfishes. These foods have hard body parts that cause wear of the teeth as the predator ages and incurs more damaging feeding experiences. This can lead to exposure of the pulp cavity and possible abscess and resorption of bone around the alveolus. Further, strong bites against harder parts of prey sometimes results in mechanical breakage, which can lead to pulpitis and severe pathology leading to tooth loss. We investigated the frequency of different forms of dental issues in a sample of 178 skulls of river …
Energy Content Of Seeds Of Switchgrass (Panicum Virgatum) In The Diet Of Mourning Doves (Zenaida Macroura) In Southeastern New Mexico, John L. Hunt, Matthew E. Grilliot, Troy L. Best, Faith A. Johnson, Tyneshia L. Kilgore, Cade M. Wilkerson
Energy Content Of Seeds Of Switchgrass (Panicum Virgatum) In The Diet Of Mourning Doves (Zenaida Macroura) In Southeastern New Mexico, John L. Hunt, Matthew E. Grilliot, Troy L. Best, Faith A. Johnson, Tyneshia L. Kilgore, Cade M. Wilkerson
Journal of the Arkansas Academy of Science
Switchgrass (Panicum virgatum) is a common forage plant that grows over much of the United States. It has drawn interest as a possible feedstock for biofuels, is used as forage for livestock, is planted for soil conservation, and is a component of the diet of some species of wildlife. We analyzed the energy content of seeds of switchgrass obtained from the crops of mourning doves (Zenaida macroura) collected from plains-mesa sand-scrub in Lea and Eddy counties, New Mexico. Seeds were removed from crops and dried for 48 hours at 60°C to remove moisture and standardize masses. …
Yellow-Rumped Warblers (Setophaga Coronata) Sipping Sap From Sapsucker Wells, Ragupathy Kannan, Renn Tumlison
Yellow-Rumped Warblers (Setophaga Coronata) Sipping Sap From Sapsucker Wells, Ragupathy Kannan, Renn Tumlison
Journal of the Arkansas Academy of Science
The Yellow-rumped Warbler (Setophaga coronata) is one of the most ecologically generalized of the warblers. It feeds primarily on invertebrates, but often switches to fruit during winter, utilizing a wide array of foraging maneuvers. It also uses a variety of foraging substrates. Reports of these warblers taking sap from sapsucker wells are rare. Here we report 3 instances of sapsucking Yellow-rumped Warblers from Arkansas. All three observations were immediately preceded by extreme cold weather with snow or ice precipitation. We hypothesize that opportunistic sapsucking from sapsucker holes may be another strategy employed by the species to meet its …
Business Meeting Report (Secretary's And Treasurer's Report), Academy Editors
Business Meeting Report (Secretary's And Treasurer's Report), Academy Editors
Journal of the Arkansas Academy of Science
No abstract provided.
Instructions To Authors, Academy Editors
Instructions To Authors, Academy Editors
Journal of the Arkansas Academy of Science
No abstract provided.
Rice Tolerance To Multiple Applications Of Florpyrauxifen-Benzyl Alone And Followed By Benzobicyclon, James Winston Beesinger, Jason K. Norsworthy, Thomas R. Butts, Trenton Roberts
Rice Tolerance To Multiple Applications Of Florpyrauxifen-Benzyl Alone And Followed By Benzobicyclon, James Winston Beesinger, Jason K. Norsworthy, Thomas R. Butts, Trenton Roberts
Crop, Soil and Environmental Sciences Faculty Publications and Presentations
Varying levels of sensitivity to florpyrauxifen-benzyl and benzobicyclon applications among rice (Oryza sativa L.) cultivars have been observed. The safe use of florpyrauxifen-benzyl and benzobicyclon in the same herbicide program could provide broad-spectrum weed control and delay resistance in weed species. Two experiments were conducted in 2019 and 2020 near Stuttgart, AR, to test cultivars' sensitivity to multiple rates of florpyrauxifen-benzyl and applications of florpyrauxifen-benzyl followed by benzobicyclon. The first experiment was designed to determine the sensitivity of the rice cultivars `XP753', 'CL XL745', 'Gemini 214CL', 'Titan', and 'Diamond' to applications of florpyrauxifen-benzyl at 0.03 and 0.06 lb acid …
Raman Spectroscopy Reveals Phenotype Switches In Breast Cancer Metastasis, Santosh Kumar Paidi, Joel Rodriguez Troncoso, Mason G. Harper, Zhenhui Liu, Khue G. Nguyen, Sruthi Ravindranathan, Lisa Rebello, David E. Lee, Jesse D. Ivers, David A. Zaharoff, Narasimhan Rajaram, Ishan Barman
Raman Spectroscopy Reveals Phenotype Switches In Breast Cancer Metastasis, Santosh Kumar Paidi, Joel Rodriguez Troncoso, Mason G. Harper, Zhenhui Liu, Khue G. Nguyen, Sruthi Ravindranathan, Lisa Rebello, David E. Lee, Jesse D. Ivers, David A. Zaharoff, Narasimhan Rajaram, Ishan Barman
Biomedical Engineering Faculty Publications and Presentations
The accurate analytical characterization of metastatic phenotype at primary tumor diagnosis and its evolution with time are critical for controlling metastatic progression of cancer. Here, we report a label-free optical strategy using Raman spectroscopy and machine learning to identify distinct metastatic phenotypes observed in tumors formed by isogenic murine breast cancer cell lines of progressively increasing metastatic propensities. Methods: We employed the 4T1 isogenic panel of murine breast cancer cells to grow tumors of varying metastatic potential and acquired label-free spectra using a fiber probe-based portable Raman spectroscopy system. We used MCR-ALS and random forests classifiers to identify putative spectral …
Ultramarine, Verna Bryan
Ultramarine, Verna Bryan
Diamond Line Undergraduate Literary Magazine
Verna Corinne Bryan is a junior from Little Rock, AR. She’s majoring in English with a Creative Writing concentration and minoring in French. She hopes to someday write a book that gets turned into a movie so she never has to work again.
Contrastive Learning For Unsupervised Auditory Texture Models, Christina Trexler
Contrastive Learning For Unsupervised Auditory Texture Models, Christina Trexler
Computer Science and Computer Engineering Undergraduate Honors Theses
Sounds with a high level of stationarity, also known as sound textures, have perceptually relevant features which can be captured by stimulus-computable models. This makes texture-like sounds, such as those made by rain, wind, and fire, an appealing test case for understanding the underlying mechanisms of auditory recognition. Previous auditory texture models typically measured statistics from auditory filter bank representations, and the statistics they used were somewhat ad-hoc, hand-engineered through a process of trial and error. Here, we investigate whether a better auditory texture representation can be obtained via contrastive learning, taking advantage of the stationarity of auditory textures to …
"Blazing The Trail" For The Future: Bipoc Students' Experiences With Colleges Of Agriculture, Logan Moss
"Blazing The Trail" For The Future: Bipoc Students' Experiences With Colleges Of Agriculture, Logan Moss
Agricultural Education, Communications and Technology Undergraduate Honors Theses
Since its founding, the United States has faced a constant turmoil surrounding the equitable treatment of people from non-Caucasian backgrounds, especially regarding education. This study sought to examine BIPOC (Black, Indigenous and People of Color) students experiences prior to entry and during their studies in colleges of agriculture within the State of Arkansas. Research has shown that across the country there are discrepancies between the percentage of BIPOC students in the State, university, and colleges of agriculture. This study used a qualitative interview method to determine the factors influencing minority students to enter and stay within a program of study …
Controversial And Contradictory: Historical And Contemporary Apologies For (A Lack Of) Faculty Academic Freedom, Z. W. Taylor, Pat Somers
Controversial And Contradictory: Historical And Contemporary Apologies For (A Lack Of) Faculty Academic Freedom, Z. W. Taylor, Pat Somers
Journal of Research on the College President
Although academic freedom is considered a pillar of the academy in the United States, little legal precedent has been established to legitimize faculty academic freedom. Moreover, no legislation or case law outlines a hierarchy of academic freedom whereby institutional academic freedom may be positioned as authoritative over faculty academic freedom or vice versa. As a result, many institutions of higher education have violated academic freedom and then subsequently apologized for overstepping legal boundaries, stemming from infringing upon individuals’ rights that have not been codified through law. These apologies include a very recent one, where a university president’s remorseful remark regarding …
Genetic Diversity, Structure, And Selective Sweeps In Spinacia Turkestanica Associated With The Domestication Of Cultivated Spinach, Sanjaya Gyawali, Gehendra Bhattarai, Ainong Shi, Chris Kik, Lindsey J. Du Toit
Genetic Diversity, Structure, And Selective Sweeps In Spinacia Turkestanica Associated With The Domestication Of Cultivated Spinach, Sanjaya Gyawali, Gehendra Bhattarai, Ainong Shi, Chris Kik, Lindsey J. Du Toit
Horticulture Faculty Publications and Presentations
Genotype-by-sequencing (GBS) was used to explore the genetic diversity and structure of Spinacia turkestanica, and the selective sweeps involved in domestication of cultivated spinach, S. oleracea, from S. turkestanica. A total 7,065 single nucleotide polymorphisms (SNPs) generated for 16 Spinacia oleracea and 76 S. turkestanica accessions placed the S. oleracea accessions in one group, Q1, and the 76 S. turkestanica accessions, which originated from Central Asia, in two distinct groups, Q2 and Q3. The Q2 group shared greater genetic identity with the S. oleracea accessions, Q1, than the Q3 S. turkestanica …
Evaluation Of Essential Oil Products On Performance, Intestinal Permeability, Bone Mineralization, And Oxidative Stress Parameters On Broiler Chickens Under Heat Stress Conditions, Jared Ruff
Poultry Science Undergraduate Honors Theses
The goal of this study was to show how dietary supplementation of three different formulations of essential oils (EO) affected the performance of broiler chickens during heat stress (HS). Day-of-hatch Cobb 500 chicks (n = 500) were randomly divided into four groups: 1. HS control + control diets; 2. HS + control meals supplemented with 37 ppm EO of Lippia origanoides (LO); 3. HS + control diets supplemented with 45 ppm LO + 45 ppm EO of Rosmarinus officinalis (RO) + 300 ppm red beetroot; 4. HS + 45 ppm LO + 45 ppm RO + 300 ppm natural betaine. …
Studies Of Avian Nasal Mites (Acari: Rhinonyssidae And Ereynetidae) And Their Interaction With The Brood Parasite Brown-Headed Cowbird (Molothrus Ater: Icteridae) And Phylogenetic Inferences Of The Genus Ptilonyssus (Rhinonyssidae) On Different Passerine Hosts Associated To Three States In The Us, Alexis D. Hilario Perez
Graduate Theses and Dissertations
Nasal mites are endoparasites that spend their entire life cycle inside the nasal cavities and respiratory passages of birds. The Brown-Headed cowbird (Molothrus ater) (BHCO) is an icterid bird that uses brood parasitism as a reproductive strategy in which it lays an egg in the nest of a different bird species and allows the host to raise its young. Interestingly, nasal mites reported from cowbirds represent the same species found infesting other icterids and other common host groups. In the first study, I examined how diversity and host prevalence might change in a large sample size of BHCO associated with …
Investigating Depth Estimation To Archaeological Magnetic Source Bodies, Jeremy G. Menzer
Investigating Depth Estimation To Archaeological Magnetic Source Bodies, Jeremy G. Menzer
Graduate Theses and Dissertations
Magnetometry is the most widely applied archaeo-geophysical technique. Current practice standards employ the technique to map only in a two-dimensional plan view fashion, but in deep geologic studies depth estimators are routinely applied to magnetic datasets. These estimators provide three-dimensional information to magnetic source-bodies. There are many different depth estimators employed in geologic study that all require various degrees of processing complexity. This study investigates two mathematically simple techniques, half-width rules and multi-height methods. Half-width rules are likely the oldest depth estimators within the field while multi-height techniques are but a minor footnote in the literature. The applicability of these …
Examining Risks To Honey Bee Pollinators Foraging In Agricultural Landscapes, Jon Zawislak
Examining Risks To Honey Bee Pollinators Foraging In Agricultural Landscapes, Jon Zawislak
Graduate Theses and Dissertations
Bee pollinators provide essential ecological services to wild plant communities, and addtremendous economic value to agriculture by improving both the quality and quantity of crop yield. Beekeepers are often contracted by growers to provide colonies of honey bees for pollination of high-value produce (fruits, vegetables and nuts). Many of the major commodity crops produced in the central and mid-southern United States are wind-pollinated (rice, corn, grain sorghum, wheat), or are sufficiently self-fertile (soybeans, cotton), and so do not require bee pollination in order to produce yield. Beekeepers still rely on these agricultural landscapes to support honey bee colonies when not …
Community Perceptions And Aesthetic Valuation Of Remediation Gardens, Rachel Bechtold
Community Perceptions And Aesthetic Valuation Of Remediation Gardens, Rachel Bechtold
Graduate Theses and Dissertations
Creating successfully remediated landscapes may rely on both natural resources and human perception in landscape design. Urban areas present a dynamic environment wherein communities and nature compete for resources and space. This dissertation study was designed to better understand aesthetic perceptions of native plants capable of land remediation in midwestern communities. Findings from this study show the importance of aesthetic perceptions of stakeholders towards rehabilitated landscapes and the importance of organizing indicators for future design decisions in an interdisciplinary fashion. Recommendations include continued evaluation of aesthetic perceptions for plant species in urban landscapes and modeling a more consistent framework for …
Thermometry Via Diffusion In Ferrous Core-Shell Nanoparticles For Induction Heating Applications, Hayden Carlton
Thermometry Via Diffusion In Ferrous Core-Shell Nanoparticles For Induction Heating Applications, Hayden Carlton
Graduate Theses and Dissertations
Induction heating causes the release of enormous amounts of heat from dispersed magnetic nanoparticles. While the rate of heat transfer can be easily quantified calorimetrically, measuring the temperature of the nanoparticles on the nanoscale presents experimental challenges. Fully characterizing the temperature and thermal output of these magnetic particles is necessary to gauge overall heating efficiency and to provide a more holistic understanding of heat transfer on the nanoscale. Herein, this dissertation seeks to develop a novel nanoparticle thermometry technique, which correlates diffusion behavior in core-shell nanoparticles to local temperature. Initial measurements suggested that heating silica capped ferrous nanoparticles (SCNPs) via …
Habitat Assessment Of Ozark Glades Using Selected Epigeal Predatory Arthropods, Austin Key Jones
Habitat Assessment Of Ozark Glades Using Selected Epigeal Predatory Arthropods, Austin Key Jones
Graduate Theses and Dissertations
Epigeal predatory arthropods were collected with pitfall-style traps in nine sandstone glades of varying ecological stages, and management histories, in the Ozarks of Northern Arkansas over three years. These sites were categorized into three Site Types; Intact, high quality glades; Degraded, forest-encroached glades, and Restored glades which had received woody vegetation removal and burning. Collections of ground spiders (Gnaphosidae), predatory ground beetles (Carabidae), and the sole species of scorpion present in the Ozarks, Centruroides vittatus, were reported on as well as the applicability of arthropod collection methods for glade habitat assessment. Habitat characteristics were recorded for each site and analyzed …
Respiratory Compensated Robot For Liver Cancer Treatment: Design, Fabrication, And Benchtop Characterization, Mishek Jair Musa
Respiratory Compensated Robot For Liver Cancer Treatment: Design, Fabrication, And Benchtop Characterization, Mishek Jair Musa
Graduate Theses and Dissertations
Hepatocellular carcinoma (HCC) is one of the leading causes of cancer-related death in the world. Radiofrequency ablation (RFA) is an effective method for treating tumors less than 5 cm. However, manually placing the RFA needle at the site of the tumor is challenging due to the complicated respiratory induced motion of the liver. This paper presents the design, fabrication, and benchtop characterization of a patient mounted, respiratory compensated robotic needle insertion platform to perform percutaneous needle interventions. The robotic platform consists of a 4-DoF dual-stage cartesian platform used to control the pose of a 1-DoF needle insertion module. The active …
Hobby Grade Lithium-Ion Batteries For Spacecraft Applications: Establishing An Automated Electrical Characteristics Testing Procedure For Flight Acceptance Of Non-Space-Grade Small Secondary Batteries, Braidon Hughes
Graduate Theses and Dissertations
Li-ion batteries are widely used due to the large amount of rechargeable energy they pack into a small, light package. This higher energy density makes Li-ion batteries ideal for small satellite applications, specifically CubeSats. CubeSats have grown in popularity in higher level education due to the National Aeronautics and Space Administration’s implementation of the Cube Satellite Launch Initiative, making it easier and cheaper to conduct small, low orbit missions. Because these CubeSats are occupying the same space as a crewed spacecraft, it is imperative that they are safe. There are numerous reports of Li-ion batteries creating fires that result in …
Formation Of Reactive Nitrogen Species During Dichloramine Decay And Their Impact On N Nitrosodimethylamine Formation Under Drinking Water Conditions, Huong Thu Pham
Graduate Theses and Dissertations
NDMA occurrence and formation pathways in drinking water systems are reviewed and NDMA yields are compared on the basis of disinfectant type, water chemistry, and precursor category. In chloramination, despite monochloramine being the predominant species between pH 7-9, evidence suggests that dichloramine is the primary species involved in NDMA formation. This is somewhat confounding as NDMA yields are maximal at pH 9, yet at pH 9 dichloramine decays faster than it forms and hence is present at trace levels; additionally, the proposed mechanism involves a spin-forbidden incorporation of dissolved oxygen as a triplet, which is presumably kinetically slow. This review …
Field Evaluation Of Struvite As A Phosphorus Source, Niyi Sunday Omidire
Field Evaluation Of Struvite As A Phosphorus Source, Niyi Sunday Omidire
Graduate Theses and Dissertations
Phosphorus (P) is an element that is crucial in many biological processes in all forms of life and is not substitutable. Excess P in wastewaters leading to the degradation of receiving waters or eutrophication once released is a major environmental concern. Removal of excess P from wastewater as the mineral struvite (MgNH4PO4·6H2O) could be a promising solution to reduce P discharge into receiving waters and can potentially provide a valuable fertilizer-P source for agricultural production. The objectives of this project were to evaluate the effects of: 1) chemically precipitated struvite (CPST), compared to triple superphosphate (TSP) and an unamended control …
Effects Of Il-10 On Local Cell Populations And Functional Recovery Following Vml Injury, Zain Blackwell
Effects Of Il-10 On Local Cell Populations And Functional Recovery Following Vml Injury, Zain Blackwell
Biomedical Engineering Undergraduate Honors Theses
Volumetric muscle loss (VML) injuries are prevalent in both military personnel suffering from battlefield related incidents, and civilians following severe motor accidents. Despite its prevalence, VML has no pro-regenerative clinical treatments in place to recover some of the functional capabilities of the damaged muscle. Free flap grafting, debridement of damaged tissue, and physical therapy are the only clinical standards available that offer little functional recovery benefits, even after years of consistent treatment. In this study, anti-inflammatory cytokine interleukin-10 in conjunction with autologous minced muscle was assessed as a possible treatment for VML injuries and its influences on cellular behavior within …
China's Food Pagodas: Looking Forward By Looking Back?, Yifei Li, Dale Jamieson
China's Food Pagodas: Looking Forward By Looking Back?, Yifei Li, Dale Jamieson
Journal of Food Law & Policy
In this Article we provide a close analysis of the Chinese Dietary Guidelines – the Food Pagoda. Our focus on the dietary guidelines is motivated by two main considerations. First, the guidelines represent the most comprehensive, nationwide, state sponsored effort to educate the people of China about food. Like citizens in most countries, Chinese people are presented with numerous, often competing, messages from scientists, food gurus and online influencers. The dietary guidelines are different in that they are backed by an entire suite of governmental resources for nationwide dissemination through hospitals, schools, public billboards, TV and radio ads, among others. …
Use Patterns And Influencing Factors Of Irrigation Best Management Practices In The Lower Mississippi River Basin, Merri E. Day
Use Patterns And Influencing Factors Of Irrigation Best Management Practices In The Lower Mississippi River Basin, Merri E. Day
Graduate Theses and Dissertations
This study uses the 2016 Irrigation Survey from Arkansas, Louisiana, and Mississippi to document the use of irrigation best management practices (IBMPs), analyze use patterns, and use quantitative methods to determine factors that influence producers’ decisions regarding IBMPs. IBMPs included in the survey can be grouped as: field management practices (zero-grade leveling, precision-grade leveling, end blocking, warped surface, and deep tillage), water flow control practices (computerized pipe-hole selection, multiple-inlet irrigation, surge irrigation, alternate wetting and drying, cutback irrigation, flow meters, and pump timers), water recovery/storage practices (tail-water recovery system and on-farm storage reservoir), and advanced irrigation scheduling practices (soil moisture …