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Articles 42151 - 42180 of 292142

Full-Text Articles in Physical Sciences and Mathematics

Tc-Net: A Modest & Lightweight Emotion Recognition System Using Temporal Convolution Network, Muhammad Ishaq, Mustaqeem Khan, Soonil Kwon Apr 2023

Tc-Net: A Modest & Lightweight Emotion Recognition System Using Temporal Convolution Network, Muhammad Ishaq, Mustaqeem Khan, Soonil Kwon

Computer Vision Faculty Publications

Speech signals play an essential role in communication and provide an efficient way to exchange information between humans and machines. Speech Emotion Recognition (SER) is one of the critical sources for human evaluation, which is applicable in many real-world applications such as healthcare, call centers, robotics, safety, and virtual reality. This work developed a novel TCN-based emotion recognition system using speech signals through a spatial-temporal convolution network to recognize the speaker's emotional state. The authors designed a Temporal Convolutional Network (TCN) core block to recognize long-term dependencies in speech signals and then feed these temporal cues to a dense network …

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A Method To Measure Positron Beam Polarization Using Optically Polarized Atoms, Joshua Joshua Machacek, Sean Hodgman, Stephen Buckman, T. J. Gay Apr 2023

A Method To Measure Positron Beam Polarization Using Optically Polarized Atoms, Joshua Joshua Machacek, Sean Hodgman, Stephen Buckman, T. J. Gay

Department of Physics and Astronomy: Faculty Publications

We outline an experimental technique for measuring the degree of polarization of a positron beam using an optically pumped, spin-polarized Rb target. The technique is based on the production and measurement of the ortho- and para-positronium fractions through positron collisions with the Rb atoms as a function of their polarization. Using realistic estimates for the cross sections and experimental parameters involved, we estimate that a polarization measurement with an uncertainty of 3% of the measured value can be achieved in an hour

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Impacts Of Floodplain Restoration On Water Temperature And Macroinvertebrates In Whychus Creek, Oregon, Wesley Nathan Noone Apr 2023

Impacts Of Floodplain Restoration On Water Temperature And Macroinvertebrates In Whychus Creek, Oregon, Wesley Nathan Noone

Dissertations and Theses

Stream restoration is a proposed climate adaptation tool, however, outcomes of floodplain restoration on stream temperature have been debated. Despite a growing number of studies that investigated water temperature in restored streams, few have quantified thermal heterogeneity in new habitat types created by restored hydrogeomorphic processes and the impact of thermal diversity on the aquatic macroinvertebrate community. In this study, I evaluated three hypotheses: 1) restoration increases habitat diversity, 2) habitat diversity increases water temperature heterogeneity, and 3) restored reaches have more diverse macroinvertebrate communities. I collected a total of 40 macroinvertebrate samples and characterized environmental conditions in three reaches …

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The Temporal Asymmetry Of Influence Is Not Statistical, Emily Adlam Apr 2023

The Temporal Asymmetry Of Influence Is Not Statistical, Emily Adlam

Mathematics, Physics, and Computer Science Faculty Articles and Research

We argue that the temporal asymmetry of influence is not merely the result of thermodynamics: it is a consequence of the fact that modal structure of the universe must admit only processes which cannot give rise to contradictions. We appeal to the process matrix formalism developed in the field of quantum foundations to characterise processes which are compatible with local free will whilst ruling out contradictions, and argue that this gives rise to ‘consistent chaining’ requirements that explain the temporal asymmetry of influence. We compare this view to the perspectival account of causation advocated by Price and Ramsey.

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Gravity Waves Emitted From Kelvin-Helmholtz Instabilities, Alan Z. Liu, Wenjun Dong, David C. Fritts, Thomas S. Lunda, Han-Li Liu Apr 2023

Gravity Waves Emitted From Kelvin-Helmholtz Instabilities, Alan Z. Liu, Wenjun Dong, David C. Fritts, Thomas S. Lunda, Han-Li Liu

Publications

Fritts, Wang, Lund, and Thorpe (2022, https://doi.org/10.1017/jfm.2021.1085) and Fritts, Wang, Thorpe, and Lund (2022, https://doi.org/10.1017/jfm.2021.1086) described a 3-dimensional direct numerical simulation of interacting Kelvin-Helmholtz instability (KHI) billows and resulting tube and knot (T&K) dynamics that arise at a stratified shear layer defined by an idealized, large-amplitude inertia-gravity wave. Using similar initial conditions, we performed a high-resolution compressible simulation to explore the emission of GWs by these dynamics. The simulation confirms that such shear can induce strong KHI with large horizontal scales and billow depths that readily emit GWs having high frequencies, small horizontal wavelengths, and large vertical group velocities. The …

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Sl(2,Z) Representations And 2-Semiregular Modular Categories, Samuel Nathan Wilson Apr 2023

Sl(2,Z) Representations And 2-Semiregular Modular Categories, Samuel Nathan Wilson

LSU Doctoral Dissertations

We address the open question of which representations of the modular group SL(2,Z) can be realized by a modular category. In order to investigate this problem, we introduce the concept of a symmetrizable representation of SL(2,Z) and show that this property is necessary for the representation to be realized. We then prove that all congruence representations of SL(2,Z) are symmetrizable. The proof involves constructing a symmetric basis, which greatly aids in further calculation. We apply this result to the reconstruction of modular category data from representations, as well as to the classification of semiregular categories, which are defined via an …

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Commutators On Fock Spaces, Daniel Alpay, Paula Cerejeiras, Uwe Kähler, Trevor Kling Apr 2023

Commutators On Fock Spaces, Daniel Alpay, Paula Cerejeiras, Uwe Kähler, Trevor Kling

Mathematics, Physics, and Computer Science Faculty Articles and Research

Given a weighted ℓ2 space with weights associated with an entire function, we consider pairs of weighted shift operators, whose commutators are diagonal operators, when considered as operators over a general Fock space. We establish a calculus for the algebra of these commutators and apply it to the general case of Gelfond–Leontiev derivatives. This general class of operators includes many known examples, such as classic fractional derivatives and Dunkl operators. This allows us to establish a general framework, which goes beyond the classic Weyl–Heisenberg algebra. Concrete examples for its application are provided.

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Analog Cosmology And Superfluidity In Atomic Gases And Electronic Materials, Anshuman Bhardwaj Apr 2023

Analog Cosmology And Superfluidity In Atomic Gases And Electronic Materials, Anshuman Bhardwaj

LSU Doctoral Dissertations

We present a study of analog cosmological models in Bose-Einstein condensates (BEC) and in graphene, and superfluidity in a box-shaped traps. We start by examining the dynamics of a Bose-Einstein condensate (BEC) trapped inside an expanding toroid that can realize an analog inflationary universe. The expanding condensate forces phonons to undergo redshift and damping due to quantum pressure, owing to the thinness of the ring. We predict that such expanding BECs can exhibit spontaneous phonon creation from the vacuum state and show how it would manifest in the atom density and density correlations and discuss connections with the inflationary theory. …

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Coarse-Grained Molecular Simulations And Ensemble-Based Mutational Profiling Of Protein Stability In The Different Functional Forms Of The Sars-Cov-2 Spike Trimers: Balancing Stability And Adaptability In Ba.1, Ba.2 And Ba.2.75 Variants, Gennady M. Verkhivker, Mohammed Alshahrani, Grace Gupta Apr 2023

Coarse-Grained Molecular Simulations And Ensemble-Based Mutational Profiling Of Protein Stability In The Different Functional Forms Of The Sars-Cov-2 Spike Trimers: Balancing Stability And Adaptability In Ba.1, Ba.2 And Ba.2.75 Variants, Gennady M. Verkhivker, Mohammed Alshahrani, Grace Gupta

Mathematics, Physics, and Computer Science Faculty Articles and Research

Evolutionary and functional studies have suggested that the emergence of Omicron variants can be determined by multiple fitness tradeoffs including immune escape, binding affinity, conformational plasticity, protein stability, and allosteric modulation. In this study, we embarked on a systematic comparative analysis of the conformational dynamics, electrostatics, protein stability, and allostery in the different functional states of spike trimers for BA.1, BA.2, and BA.2.75 variants. Using efficient and accurate coarse-grained simulations and atomistic reconstruction of the ensembles, we examined the conformational dynamics of the spike trimers that agree with the recent functional studies, suggesting that BA.2.75 trimers are the most stable …

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A Review Of The Implications Of The Love Canal Disaster And The Subsequent Actions Of The State And Federal Government, Hannah Albright, Brooklyn Hurtt, Douglas Mock Apr 2023

A Review Of The Implications Of The Love Canal Disaster And The Subsequent Actions Of The State And Federal Government, Hannah Albright, Brooklyn Hurtt, Douglas Mock

2023 Celebration of Student Scholarship - Poster Presentations

There is much literature written about environmental law and policy. The one focused on in this poster presentation is “Love Canal: A Toxic History from Colonial Times to the Present” by Richard S. Newman. The novel focuses on the Love Canal tragedy in upstate New York, where a chemical plant caused housewives to turn into activists after their neighbors, friends, and even their own families became extremely ill or succumbed because of the toxic waste. The tragedy at Love Canal was the precursor to grassroots movements across the United States.

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Enhancing Telomerase Activity In Saccharomyces Cerevisiae Through A Genetic Screen For Gain-Of-Function Mutations, Keenan Conley, Hailey Rietz, Mackenzie Neal, Melissa Mefford Apr 2023

Enhancing Telomerase Activity In Saccharomyces Cerevisiae Through A Genetic Screen For Gain-Of-Function Mutations, Keenan Conley, Hailey Rietz, Mackenzie Neal, Melissa Mefford

2023 Celebration of Student Scholarship - Poster Presentations

Telomeres are located at the ends of eukaryotic linear chromosomes and are composed of repeated nucleotide sequences. The main function of telomeres is to protect chromosomal ends. However, telomeres cannot be copied entirely during DNA replication leading to a gradual shortening known as the “end-replication problem”. To counteract this problem, the RNA-dependent enzyme complex telomerase works to extend telomeres and maintain the chromosomal ends which helps to prevent senescence. Understanding the structure and function of telomerase could have important implications for the development of anti-cancer therapeutics, since telomerase is over-active in >85% of all human cancers. While the general role …

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Collapse: The History Of How We Fail, And What We Can Do To Save Ourselves, David Ace, Grace Funke, Aj Abdel-Rahman, Nate Floccare, Kristen Russell, Madison Ingram, Douglas Mock Apr 2023

Collapse: The History Of How We Fail, And What We Can Do To Save Ourselves, David Ace, Grace Funke, Aj Abdel-Rahman, Nate Floccare, Kristen Russell, Madison Ingram, Douglas Mock

2023 Celebration of Student Scholarship - Poster Presentations

Using Diamond's Five point framework for how societies have collapsed in the past allow us in the present to recognize these signs in modern societies. We have the gift of hindsight in which we now know that factors such as climate change, impact on the environment, decline on friendly contact, increase in hostile contact, and a conservative outlook have all contributed to past societies' collapse. We now recognize these issues in modern societies such as China, Australia, Rwanda, and Haiti. This allows these societies to reevaluate their current environmental standards on whether they are compatible with their survival or collapse. …

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The Impact Of Nursing Skill Competency On Patient Outcomes: A Quality Improvement Project, Abby Blair, Riley Boling, Natalie Crace, Jascie Greene, Peyton Kennedy, Andrew Morris, Joseph Sewell, Abigail Wesselkamper, Suzi White Apr 2023

The Impact Of Nursing Skill Competency On Patient Outcomes: A Quality Improvement Project, Abby Blair, Riley Boling, Natalie Crace, Jascie Greene, Peyton Kennedy, Andrew Morris, Joseph Sewell, Abigail Wesselkamper, Suzi White

2023 Celebration of Student Scholarship - Poster Presentations

45 out of 50 facilities that implemented continued education saw improved patient outcomes. This presentation focuses on the importance of nurse participation in continued professional development programs because it is a shortcoming that we noticed in clinical practice.

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The Diversity Of Life By E.O. Wilson, Emma Collins, Matthew Grace, Brady Lawson, Michelle Lopez, Zane Rousey, Douglas Mock Apr 2023

The Diversity Of Life By E.O. Wilson, Emma Collins, Matthew Grace, Brady Lawson, Michelle Lopez, Zane Rousey, Douglas Mock

2023 Celebration of Student Scholarship - Poster Presentations

In The Diversity of Life, E. O. Wilson tells a tale about how our earth is on track for another extinction event and humans are at fault. Wilson discusses various topics such as environmental preservation, biodiversity and its importance, and how life has evolved over time. Wilson views biodiversity differently than many as he focuses on all species found in the ecosystem rather than narrowing his focus on one. He mentions how new species can be created by groups evolving and developing new skills or existing in new environments. Species are going extinct and being created constantly; these extinctions don't …

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Age And Growth Of The Highland Shiner (Notropis Micropteryx) In Rockcastle County, Kentucky, Caitlyn Senters, Zoe Baker, Shelbie Black, Jared Vise, David J. Eisenhour Apr 2023

Age And Growth Of The Highland Shiner (Notropis Micropteryx) In Rockcastle County, Kentucky, Caitlyn Senters, Zoe Baker, Shelbie Black, Jared Vise, David J. Eisenhour

2023 Celebration of Student Scholarship - Poster Presentations

Notropis micropteryx, the Highland Shiner, is common in small to large streams of the Cumberland, Tennessee, and upper Green River drainages. It usually inhabits rocky riffles (Eisenhour and Eisenhour 2004)). While their population size was assessed as stable by the IUCN in 2012, little is known about the age and growth of this minnow species. Despite being a small fish, attention must be given to the health of its population as it serves an ecological niche and impact on the surrounding ecosystem.

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Age And Growth Of The Popeye Shiner (Notropis Ariommus) In The Rockcastle River, Shelbie Black, Jared Vise, Zoe Baker, Caitlyn Senters, David J. Eisenhour Apr 2023

Age And Growth Of The Popeye Shiner (Notropis Ariommus) In The Rockcastle River, Shelbie Black, Jared Vise, Zoe Baker, Caitlyn Senters, David J. Eisenhour

2023 Celebration of Student Scholarship - Poster Presentations

The Popeye Shiner (Notropis ariommus), occupies clear, gravel runs and flowing pools of creeks and small rivers throughout the Ohio River basin, but has declined in many areas. This species is a small silvery minnow with an unusually large eye. Despite being a candidate for the endangered species list (Department of the Interior, 2011), little life-history data have been published, which are needed to make conservation management decisions.

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A Search For The Time Variability In The Population Of X-Ray Binary Systems In The Galaxy Ic 342, Bannon Jones, Thomas Pannuti Apr 2023

A Search For The Time Variability In The Population Of X-Ray Binary Systems In The Galaxy Ic 342, Bannon Jones, Thomas Pannuti

2023 Celebration of Student Scholarship - Poster Presentations

X-ray binaries (XRBs) are comprised of a neutron star (NS) or stellar-mass black hole (BH) that is accreting material from a stellar companion. Studies of these sources yield insights into the properties of NSs and BHs as well as the dynamics of mass transfer and stellar evolution in binary star systems with sources at stages of advanced stellar evolution. Studies of X-ray binaries in the Galaxy are compromised by massive absorption extinction along Galactic lines of sight and by significant uncertainties in the distances to these sources. In contrast, studies of XRBs in nearby face-on galaxies with high current rates …

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Period Analyses Of Variable Stars Alpha Orionis And Beta Lyrae, Gianna Federico, Jennifer Birriel Apr 2023

Period Analyses Of Variable Stars Alpha Orionis And Beta Lyrae, Gianna Federico, Jennifer Birriel

2023 Celebration of Student Scholarship - Poster Presentations

Variable stars change in brightness over regular or semiregular periods of time. Causes of variability include pulsation (changes in size) or the presence of a companion star or planet that eclipses part of the stellar surface. We examine period changes of the bright variable stars Alpha Orionis (Betelgeuse) and Beta Lyrae using data from the American Association of Variable Star Observers (AAVSO). Periods were analyzed by applying Fourier and weighted wavelet z-transforms to the light curves of each star over a 30-year time span. Our analyses showed that both the short and long secondary periods of Betelgeuse changed with time. …

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The Thrombin Cleavage Of Protein Tags Of Co-Repressors Umudab And Ddrr Of The Pathogen Acinetobacter Baumaniihave Been Optimized For Cross-Linkage, Mercy Hailu, Deborah Cook, Janelle Hare Apr 2023

The Thrombin Cleavage Of Protein Tags Of Co-Repressors Umudab And Ddrr Of The Pathogen Acinetobacter Baumaniihave Been Optimized For Cross-Linkage, Mercy Hailu, Deborah Cook, Janelle Hare

2023 Celebration of Student Scholarship - Poster Presentations

The Acinetobacter baumannii strain 17978 is a Gram-negative and nosocomial ESKAPE pathogen which utilizes its unique SOS genes, umuDAb and ddrR, to inhibit cell division and control mutagenesis in response to DNA damage.

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Challenges In Creating Circularized Versions Of Linear Chromosomes, Tanner Hamilton, Melissa A. Mefford Apr 2023

Challenges In Creating Circularized Versions Of Linear Chromosomes, Tanner Hamilton, Melissa A. Mefford

2023 Celebration of Student Scholarship - Poster Presentations

Prokayotic and eukarotic chromosome structure differs. Generally prokaryotes have a single circular chromosome, while eukaryotes have multiple linear chromosomes. Linear chromosomes contain telomeres, composed of repeated DNA sequences, at the ends of the chromosome. While telomeres play crucial roles in capping telomeres, they create an end-replication problem. To overcome this issue, most eukaryotes possess the ribonucleoprotein enzyme complex telomerase. Despite the existence of telomerase, telomeres nonetheless shorten with aging and are thought to be a major contributor to this phenomenon. On the other hand, telomerase is upregulated in >85% of human cancers in order to allow the uncontrolled cell proliferation …

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Fungal Palynology Of High-Latitude Coals And Interseam Rocks From The Miocene Climate Optimum Warming Event, Victoria, Australia, Taylor Horsfall, Alyssa Patel, Laikin Tarlton, Ingrid Romero, Noelia Nunez Otano, Malcolm Wallace, Vera Korasidas, Jen O'Keefe Apr 2023

Fungal Palynology Of High-Latitude Coals And Interseam Rocks From The Miocene Climate Optimum Warming Event, Victoria, Australia, Taylor Horsfall, Alyssa Patel, Laikin Tarlton, Ingrid Romero, Noelia Nunez Otano, Malcolm Wallace, Vera Korasidas, Jen O'Keefe

2023 Celebration of Student Scholarship - Poster Presentations

No abstract provided.

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Golding-Yang Gallery Fellowship, Kayle Lane, Macie Lowe Apr 2023

Golding-Yang Gallery Fellowship, Kayle Lane, Macie Lowe

2023 Celebration of Student Scholarship - Poster Presentations

No abstract provided.

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High School Students' Response To Writing Mentor Feedback Of "Mirrors, Windows, Doors Literature Circle", Lee Mcconnell, Christopher Logan, Alison Hruby, Andrea Olinger, James Chisholm Apr 2023

High School Students' Response To Writing Mentor Feedback Of "Mirrors, Windows, Doors Literature Circle", Lee Mcconnell, Christopher Logan, Alison Hruby, Andrea Olinger, James Chisholm

2023 Celebration of Student Scholarship - Poster Presentations

How do high school writers feel about feedback on their writing drafts from pre-service English teachers, when those drafts are written during a Mirrors, Windows, Doors Literature Circles unit?

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Gender Identity & Perception Of Happiness, Victoria Miller, Lynn Geurin Apr 2023

Gender Identity & Perception Of Happiness, Victoria Miller, Lynn Geurin

2023 Celebration of Student Scholarship - Poster Presentations

The purpose of this study was to examine the relationship between gender identity and perception of happiness. Researchers examined the topic of gender identity and overall happiness based on a fluid or nonbinary perception of gender.

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The Editorial Process Of The Kentucky Philogical Review, Jalyn Findley, Olyvia Neal, Karen Taylor Apr 2023

The Editorial Process Of The Kentucky Philogical Review, Jalyn Findley, Olyvia Neal, Karen Taylor

2023 Celebration of Student Scholarship - Poster Presentations

No abstract provided.

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Relationships Among Maternal Characteristics In Hair Sheep, Rebekah Mills, Audrey Burton, Annika Weaver, Flint Harrelson, Patricia Harrelson Apr 2023

Relationships Among Maternal Characteristics In Hair Sheep, Rebekah Mills, Audrey Burton, Annika Weaver, Flint Harrelson, Patricia Harrelson

2023 Celebration of Student Scholarship - Poster Presentations

Since the spring of 2022, the MSU sheep flock has been an Innovation Flock for the Sheep GEMS project, managed by the University of Nebraska-Lincoln. The GEMS project is a multi-breed, national project evaluating longevity of ewes within flocks. Our part as a participant in the project involves collecting and sending raw data which is compiled into 1 very large data set. The research discussed here uses our preliminary data from the 2022 and 2023 lambing seasons collected from our Katahdin ewes (n =38; 1-4.5 years of age). Collected data included fecal egg count (FEC), body condition scoring (BCS), FAMACHA …

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A Green Chemistry Experiment: Magnetic Citrate Alginate Hydrogels Remove Methylene Blue From Water, Katelynn R. Setters, Elizabeth M. Thomas Apr 2023

A Green Chemistry Experiment: Magnetic Citrate Alginate Hydrogels Remove Methylene Blue From Water, Katelynn R. Setters, Elizabeth M. Thomas

2023 Celebration of Student Scholarship - Poster Presentations

The objective of this research was to design a green chemistry experiment that synthesizes magnetic citrate alginate hydrogels and test their effectiveness for the removal of methylene blue (MB) dye. Methylene blue dye is a common water pollutant that is toxic, carcinogenic, and nonbiodegradable; thus, can cause a severe threat to human health and environmental safety. Hence, there is a need to develop an environmentally friendly, efficient technology for removing MB from wastewater.

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The Comparison Between Fetal Kidney And Sacral Length In Determining Gestational Age, Emily Mcadams, Jennifer Clark Apr 2023

The Comparison Between Fetal Kidney And Sacral Length In Determining Gestational Age, Emily Mcadams, Jennifer Clark

2023 Celebration of Student Scholarship - Poster Presentations

Gestational age describes how far along a woman is in her pregnancy. The importance of having a correct gestational age can aid in determining if there are complications in a pregnancy such as growth restriction or macrosomia. Accurate measurements of fetal anatomy are essential in determining proper fetal growth and gestational age. Primarily, head circumference, bi-parietal diameter, abdomen circumference, femur length, cerebellum, amnionic fluid index and cervical length have been the key parameters to determine GA in an obstetrical ultrasound. The purpose of this study was to measure fetal kidney and sacral length to identify if the data correlated to …

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Photography Practicum: Learning The Basics Of Managing A Fine Art Photography Darkroom, Robyn Moore, Brooklin Routt Apr 2023

Photography Practicum: Learning The Basics Of Managing A Fine Art Photography Darkroom, Robyn Moore, Brooklin Routt

2023 Celebration of Student Scholarship - Poster Presentations

This research project provides the students with practical experience in the management of a fine art photography lab and darkroom. The students will learn how to mix and store photographic chemistry, provide assistance to undergraduate and graduate photography students, and generate ideas for improvements to the lab. The students will contribute to the revision of a lab manual that specifies best practices and operating procedures for photography lab monitors. The students will also assist other students with digital printing, as needed. Additionally, the student will improve his/her knowledge of various analog and digital photographic processes through selfdirected research with the …

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Research On Energy Harvesting And Wireless Charging Technology For Internet Of Things (Iot) Applications, Aidan Ray, Anindita Paul Apr 2023

Research On Energy Harvesting And Wireless Charging Technology For Internet Of Things (Iot) Applications, Aidan Ray, Anindita Paul

2023 Celebration of Student Scholarship - Poster Presentations

This ongoing research intends to build and test a prototype of a typical system that harvests energy from the environment and wirelessly transfers this energy to Internet of Things (IoT) devices.

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