Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Life Sciences (2507)
- Earth Sciences (2476)
- Computer Sciences (1917)
- Plant Sciences (1838)
- Soil Science (1813)
-
- Agronomy and Crop Sciences (1784)
- Agricultural Science (1760)
- Weed Science (1760)
- Plant Biology (1753)
- Plant Pathology (1748)
- Environmental Sciences (1259)
- Engineering (1108)
- Mathematics (777)
- Artificial Intelligence and Robotics (722)
- Chemistry (712)
- Physics (691)
- Social and Behavioral Sciences (579)
- Medicine and Health Sciences (537)
- Sustainability (402)
- Statistics and Probability (352)
- Education (335)
- Oceanography and Atmospheric Sciences and Meteorology (330)
- Applied Mathematics (320)
- Environmental Monitoring (299)
- Environmental Indicators and Impact Assessment (276)
- Computer Engineering (272)
- Data Science (267)
- Environmental Health and Protection (261)
- Arts and Humanities (260)
- Institution
-
- University of Kentucky (1791)
- Singapore Management University (317)
- Old Dominion University (253)
- TÜBİTAK (182)
- Missouri University of Science and Technology (181)
-
- Montana Tech Library (180)
- University of Nebraska - Lincoln (175)
- China Coal Technology and Engineering Group (CCTEG) (171)
- China Simulation Federation (159)
- University of Texas Rio Grande Valley (153)
- Portland State University (145)
- Utah State University (118)
- Claremont Colleges (115)
- Michigan Technological University (92)
- Western Washington University (92)
- Chapman University (88)
- Kennesaw State University (88)
- Edith Cowan University (87)
- Association of Arab Universities (86)
- University of New Mexico (84)
- Virginia Commonwealth University (80)
- University of Texas at El Paso (79)
- Chinese Academy of Sciences (73)
- City University of New York (CUNY) (72)
- Clemson University (69)
- Dartmouth College (69)
- University of Tennessee, Knoxville (67)
- Zayed University (65)
- Roseman University of Health Sciences (61)
- East Tennessee State University (60)
- Keyword
-
- Machine learning (146)
- Grazing (132)
- Artificial intelligence (117)
- Climate change (95)
- Deep learning (79)
-
- Sustainability (66)
- Machine Learning (64)
- Sheep (61)
- Trifolium repens (60)
- Cattle (55)
- Artificial Intelligence (54)
- Lolium perenne (49)
- Forage quality (46)
- Nitrogen (46)
- Technical Reports (40)
- UTEP Computer Science Department (40)
- Weather (40)
- Forage (39)
- Persistence (39)
- Deep Learning (38)
- Pasture (38)
- AI (37)
- Internship (37)
- Management (36)
- Conservation (35)
- Cybersecurity (35)
- Mathematics (35)
- Optimization (35)
- Climate (34)
- Nutritive value (34)
- Publication
-
- IGC Proceedings (1993-2023) (1746)
- Research Collection School Of Computing and Information Systems (273)
- Silver Bow Creek/Butte Area Superfund Site (178)
- Theses and Dissertations (177)
- Coal Geology & Exploration (171)
-
- Journal of System Simulation (159)
- Electronic Theses and Dissertations (108)
- Research outputs 2022 to 2026 (86)
- Journal of Engineering Research (83)
- Bulletin of Chinese Academy of Sciences (Chinese Version) (73)
- Michigan Tech Publications, Part 2 (66)
- All Works (65)
- Annual Research Symposium (61)
- Branch Mathematics and Statistics Faculty and Staff Publications (61)
- Journal of Humanistic Mathematics (59)
- ASEAN Journal on Science and Technology for Development (58)
- Doctoral Dissertations (58)
- Honors Theses (58)
- C-Day Computing Showcase (57)
- Biology and Medicine Through Mathematics Conference (53)
- All Graduate Theses and Dissertations, Fall 2023 to Present (52)
- Turkish Journal of Chemistry (52)
- Dissertations, Theses, and Capstone Projects (50)
- School of Mathematical and Statistical Sciences Faculty Publications and Presentations (49)
- Turkish Journal of Mathematics (48)
- Faculty Scholarship (47)
- Master's Theses (46)
- Masters Theses (46)
- Mathematics, Physics, and Computer Science Faculty Articles and Research (45)
- Physics and Astronomy Faculty Publications and Presentations (43)
- Publication Type
Articles 4591 - 4620 of 8096
Full-Text Articles in Physical Sciences and Mathematics
Potential Non-Carbonate Buffering In An Interdunal Wetland/Slack Along Lake Michigan, Faith Huff
Potential Non-Carbonate Buffering In An Interdunal Wetland/Slack Along Lake Michigan, Faith Huff
23rd Annual A. Paul and Carol C. Schaap Celebration of Undergraduate Research and Creative Activity (2024)
Interdunal wetlands/slacks occur in Lake Michigan's coastal dunes where the wind scours the sand to the water table. Since May 2016 we have performed ecohydrological studies on the largest interdunal wetlands/slack, ~1.25 ha in size, lying within a deflated parabolic dune east of Lake Michigan at the Saugatuck Harbor Natural Area, Michigan. The slack’s hydrology is influenced by Lake Michigan-Huron, appearing and increasing in size and water depth with rising lake levels and decreasing in size to drying with low levels. Prior to 2014, the slack was completely dry and dominated by upland dune species due to low lake levels. …
Β-Decay Strength Function Of 99,100 Y, Nathaniel Jobson, A. Spyrou
Β-Decay Strength Function Of 99,100 Y, Nathaniel Jobson, A. Spyrou
23rd Annual A. Paul and Carol C. Schaap Celebration of Undergraduate Research and Creative Activity (2024)
The rapid neutron capture process (r process) is responsible for the formation of numerous nuclei in the universe. To obtain better models for heavier nuclei that are part of the r process, the decay paths of 99,100Y were analyzed. This work was done using the Summing NaI(Tl) detector at the National Superconducting Cyclotron Laboratory. The Iβ(E) and the Beta Gamow-Teller function (BGT) were extracted from the measured Total Absorption Spectroscopy (TAS), Sum of Segments (SEG), and Multiplicity spectrum. The Iβ(E) and the Beta Gamow-Teller function (BGT) were extracted from the measured spectra and then compared to the Quasi Random Phase …
Turbulence And Zonal-Flow Impact In The Madison Symmetric Torus In Quasi-Single Helicity, Nicholas J. Kaipainen, Y. L. De Jong, L. Helder, M. J. Pueschel, J. S. Sarff, P. W. Terry, P. D. Vanmeter
Turbulence And Zonal-Flow Impact In The Madison Symmetric Torus In Quasi-Single Helicity, Nicholas J. Kaipainen, Y. L. De Jong, L. Helder, M. J. Pueschel, J. S. Sarff, P. W. Terry, P. D. Vanmeter
23rd Annual A. Paul and Carol C. Schaap Celebration of Undergraduate Research and Creative Activity (2024)
Reversed-Field Pinches (RFPs) operating in the Quasi-Single-Helicity (QSH) magnetic geometry exhibit significant improvements in confinement time as compared to standard discharges due to the efficient saturation of large-scale tearing modes. This modification to the magnetic geometry and profiles introduces new instabilities which drive transport. This work focuses on diagnosing the microinstabilities and microturbulence in a non-reversed Madison Symmetric Torus QSH experiment. Local gyrokinetic simulations are conducted with the GENE code to identify the dominant instabilities as ion-temperature-gradient (ITG) and density-gradient-driven trapped-electron-mode (TEM) at core and edge radial locations, respectively. It has been previously observed in the RFP (Williams PoP 2017) …
Identity Development Among Pre-Health Students During The Covid-19 Pandemic, Anya Kapitula, Anna Tyshka
Identity Development Among Pre-Health Students During The Covid-19 Pandemic, Anya Kapitula, Anna Tyshka
23rd Annual A. Paul and Carol C. Schaap Celebration of Undergraduate Research and Creative Activity (2024)
Many sociology studies have been published regarding the experiences and development of medical school students, but there is a gap in research observing undergraduate students on pre-health professions tracks. Specifically, studies have been published noting a significant decrease in the empathy of medical school students during their third year, but no research has been conducted to identify development patterns of these students during their undergraduate years. This study aims to identify groups of undergraduate students on pre-health professions tracks based on typologies formed from longitudinal survey responses, and also to identify any significant transitions between these groups over time. Because …
The Synthesis And Electropolymerization Of Porphyrin-Substituted Ethylenedioxythiophene (Edot) Monomers, Benjamin D. Mcintyre, Joshua A. Hawkins, Kenneth L. Brown
The Synthesis And Electropolymerization Of Porphyrin-Substituted Ethylenedioxythiophene (Edot) Monomers, Benjamin D. Mcintyre, Joshua A. Hawkins, Kenneth L. Brown
23rd Annual A. Paul and Carol C. Schaap Celebration of Undergraduate Research and Creative Activity (2024)
Two electroactive monomers were synthesized for use in forming redox-active films on electrodes. Such electroactive films are useful as redox mediating coatings in the functionalization of electrodes for sensor applications. Tetraphenylporphyrins were coupled to 3,4-ethylenedioxythiophene (EDOT) using different connector lengths and then metallated with iron to form monomers capable of electropolymerization. Hydroxymethyl EDOT was tosylated and then reacted with 4-hydroxybenzaldehyde in a Williamson ether synthesis to give an EDOT-functionalized aldehyde. This aldehyde was condensed with pyrrole under acidic conditions to form a novel EDOT-substituted porphyrin. The second porphyrin monomer was prepared similarly with a four carbon chain connector inserted between …
The Breaking Of Carbon-Carbon Bonds In Alkyl Ketones, Jenna R. Mustapha, Jordan K. Montgomery, Karen M. Nimtz, Ainsley G. Vandenbrink
The Breaking Of Carbon-Carbon Bonds In Alkyl Ketones, Jenna R. Mustapha, Jordan K. Montgomery, Karen M. Nimtz, Ainsley G. Vandenbrink
23rd Annual A. Paul and Carol C. Schaap Celebration of Undergraduate Research and Creative Activity (2024)
The breaking of carbon-carbon bonds holds great promise for organic chemistry synthesis. This project specifically looks at using a rhodium catalyst to perform a decarbonylation. The focus is to observe the outcome of a variety of different alkyl groups attached to ketones as they undergo decarbonylation reactions. Depending on the alkyl ketone, the reaction can proceed via direct decarbonylation and/or beta-hydride elimination. The goal of this project includes controlling the selectivity of these reactions for the desired product and expanding the library of successful ketones containing alkyl groups used for the reactions.
Temperature Sensitivity Of Nitrogen Mineralization In Peat From Bogs Across A Michigan Transect, Madison Smith, Hannah Sturgeon, Abigail Brewer, Gael Figueroa-Enriquez, Christopher Klaver
Temperature Sensitivity Of Nitrogen Mineralization In Peat From Bogs Across A Michigan Transect, Madison Smith, Hannah Sturgeon, Abigail Brewer, Gael Figueroa-Enriquez, Christopher Klaver
23rd Annual A. Paul and Carol C. Schaap Celebration of Undergraduate Research and Creative Activity (2024)
In this study, seven peat bogs across a latitudinal transect of Michigan were used to analyze inorganic nitrogen (nitrate and ammonium) release from peat to predict the impact that climate warming has on peatland nitrogen cycle. More nitrogen release is expected in samples kept at warmer temperatures (simulated climate warming) and also from samples from lower latitudes in the transect. 1-m peat core samples were taken at each site. 20 g of acid washed sand was added to upper chambers of microlysimeters (two-chambered filter towers). 50 g of peat was added onto the sand and was left to equilibrate for …
Mechanochemical Formation Of Polyacrylamide Nanocomposites: Impact Of Nanoparticle Surface Chemistry And Substrate Functionalization, Bryn Couturier, Lauren Buckley, Connor Bovia
Mechanochemical Formation Of Polyacrylamide Nanocomposites: Impact Of Nanoparticle Surface Chemistry And Substrate Functionalization, Bryn Couturier, Lauren Buckley, Connor Bovia
23rd Annual A. Paul and Carol C. Schaap Celebration of Undergraduate Research and Creative Activity (2024)
Osteoarthritis is a degenerative joint condition, with treatments currently limited to symptom management and invasive surgical procedures. This project investigates the fundamental mechanisms for a potential treatment route that would allow soft material nanocomposites to form within the joint through mechanochemical reactions. To gain fundamental insight into the different chemical pathways for this to occur, this work compares a top-down vs bottom-up approach. The top-down method focuses on the influence of applied oscillatory mechanical stresses on bulk hydrogel polymerization. Polyacrylamide (PAM) is used as a well-studied control system. PAM-nanocomposites were achieved through co-polymerization, with gold nanoparticles with different capping ligands …
Development Of A Consistent Proton Induced Gamma Emission Liquid 19f Standard, Jordan Craft, Ryan Mccreedy, Naomi Whitfield, Loic Rutabana
Development Of A Consistent Proton Induced Gamma Emission Liquid 19f Standard, Jordan Craft, Ryan Mccreedy, Naomi Whitfield, Loic Rutabana
23rd Annual A. Paul and Carol C. Schaap Celebration of Undergraduate Research and Creative Activity (2024)
We developed a new technique to quantify PFAS (Fluorine) contamination in water using Hope College’s particle accelerator. To do this, we created an ~2000 PPM NaF in water standard and carefully controlled the experimental configuration. We are hoping that careful control of the experimental conditions will yield a consistent 19F gamma-ray count per Coulombs from Proton Induced Gamma-ray Emission (PIGE). 3.4MeV protons have enough energy to exit the particle accelerator, travel 27 mm in air, and penetrate into the liquid standard. As protons lose energy in the liquid, nuclear reactions such as (p, p’gamma) with the 19F and 23Na nuclei …
Material Characterization For Industrial Processes Of Thin Titanium Nanotube Films, Nathaniel Jobson, Jacob Walther, Justin Rink, Wil Pinkerton
Material Characterization For Industrial Processes Of Thin Titanium Nanotube Films, Nathaniel Jobson, Jacob Walther, Justin Rink, Wil Pinkerton
23rd Annual A. Paul and Carol C. Schaap Celebration of Undergraduate Research and Creative Activity (2024)
Material characterization is an important step in the experimental processes. This step ensures that the samples' processing yields the intended results. This work outlines the process taken to analyze and characterize a set of industrial thin films. Our characterization starts with an elemental baseline from scanning electron microscopy (SEM). The composition is verified by SimNRA (Simulation Nuclear Reaction Analysis) calculations fitting Rutherford Backscattering (RBS) data collected from a silicon surface barrier (particle) detector.
Characterization And Testing Of Sipms For A Next-Generation Neutron Detector, Bishop Carl
Characterization And Testing Of Sipms For A Next-Generation Neutron Detector, Bishop Carl
23rd Annual A. Paul and Carol C. Schaap Celebration of Undergraduate Research and Creative Activity (2024)
MoNA-LISA is a position-sensitive neutron detector at the Facility for Rare Isotope Beams (FRIB) used to probe neutron-unbound states through invariant-mass spectroscopy. Position resolution of the neutron detector is a key factor in invariant mass measurements. A better neutron position would significantly improve the overall reconstructed decay energy resolution and would therefore lead to a better understanding of nuclei near and beyond the dripline. The MoNA collaboration is designing a next-generation neutron detector to improve the current MoNA-LISA resolution (~5cm). The new design will replace the PMTs for SiPM arrays as readout technology. The use of SiPMs (more compact) for …
Expanding The Use Of Palladium-Catalyzed Beta-Aryl Elimination Reactions, Anna G. Tyshka, Tyler J. King, Lucas D. Day, Timothy R. Welsh
Expanding The Use Of Palladium-Catalyzed Beta-Aryl Elimination Reactions, Anna G. Tyshka, Tyler J. King, Lucas D. Day, Timothy R. Welsh
23rd Annual A. Paul and Carol C. Schaap Celebration of Undergraduate Research and Creative Activity (2024)
Transition metal-catalyzed cross-coupling reactions involving organic boronic acids are ubiquitous throughout organic synthesis. Despite the popularity of these methods, some boronic acids, such as those with 2-heteroaryl, 2-fluoroaryl, and cyclopropyl substituents, are incompatible, as these species decompose via protodeboronation prior to their incorporation into the desired reaction. To circumvent the protodeboronation process, the organometallic intermediates typically generated via catalyst transmetallation with a boronic acid can instead be generated via β-carbon elimination Efforts will focus on solving the so-called "2-pyridyl problem" and broadening the scope of known coupling partners in a Suzuki-like reaction, then systematically expand to include other palladium- and …
Citdet, Jordan A. James, Heather K. Manching, Matthew R. Mattia, Kim D. Bowman, Amanda M. Hulse-Kemp, William J. Beksi
Citdet, Jordan A. James, Heather K. Manching, Matthew R. Mattia, Kim D. Bowman, Amanda M. Hulse-Kemp, William J. Beksi
Computer Science and Engineering Datasets
The CitDet dataset is composed of images captured at the USDA Agricultural Research Service Subtropical Insects and Horticulture Research Unit in Fort Pierce, FL, USA. Data was collected between October 2021 and October 2022. 579 images were captured from different sections of the orchard using the open-source application Field Book on Android tablets. While collecting images, we faced the camera in a portrait orientation directly centered on the tree of interest. All images were taken at the edge of the soil in the tree row to simulate a ground-based robot imaging the tree while moving between two rows of trees. …
Understanding The Mechanism Behind Hfip's Effect On Diastereomeric Separation Of Oligonucleotides, Ian Neidigh
Understanding The Mechanism Behind Hfip's Effect On Diastereomeric Separation Of Oligonucleotides, Ian Neidigh
Honors Theses
The goal of this research was to determine the mechanism behind 1,1,1,3,3,3-hexafluoroisopropanol's (HFIP0 ability to suppress the separation of oligonucleotide diastereomers. This was accomplished by selecting different molecules that were like HFIP but differed in specific ways such as polarity, number and type of halogen(s), alcohol group location, carbon chain length, hydrophobicity, and chao/kosmotropicity. These molecules replaced HFIP in an IPRP chromatography method to determine if splitting of the diastereomers was observed and then they would becompared to HFIP's effect. Viscosity tests were to run to acquire quantitative data to determine chao/kosmotropicity. No decisive trend among a single factor was …
Artificial Sociality, Simone Natale, Iliana Depounti
Artificial Sociality, Simone Natale, Iliana Depounti
Human-Machine Communication
This article proposes the notion of Artificial Sociality to describe communicative AI technologies that create the impression of social behavior. Existing tools that activate Artificial Sociality include, among others, Large Language Models (LLMs) such as ChatGPT, voice assistants, virtual influencers, socialbots and companion chatbots such as Replika. The article highlights three key issues that are likely to shape present and future debates about these technologies, as well as design practices and regulation efforts: the modelling of human sociality that foregrounds it, the problem of deception and the issue of control from the part of the users. Ethical, social and cultural …
The Black-To-White Hole Transition, Farshid Soltani
The Black-To-White Hole Transition, Farshid Soltani
Electronic Thesis and Dissertation Repository
Classically, an isolated black hole is a stable gravitational object. If however semiclassical effects are taken into account, an isolated black hole can be shown to slowly radiate its mass away in a process called evaporation. At the end of the evaporation process, when the size of the horizon becomes Planckian, the quantum nature of the gravitational field can no longer be neglected and the dynamics of the horizon is governed by quantum gravity. The main objective of this thesis is the systematic investigation of a tentative scenario for the “end of the life” of a black hole: the black-to-white …
Optimal Control Of Coefficients For The Second Order Parabolic Free Boundary Problems, Ali Hagverdiyev
Optimal Control Of Coefficients For The Second Order Parabolic Free Boundary Problems, Ali Hagverdiyev
Mathematics Colloquium Series
In this talk I will discuss Inverse Stefan type free boundary problem for the second order parabolic equation arising for instance, in modeling of laser ablation of biomedical tissues, where the information on the coefficients, heat flux on the fixed boundary, and density of heat sources are missing and must be found along with the temperature and free boundary. New PDE constrained optimal control framework is employed, where the missing data and the free boundary are components of the control vector, and optimality criteria are based on the final moment measurement of the temperature and position of the free boundary. …
H(Hydrogen)-Alpha Spectral Imaging Of Z>5 Quasars, Pratik Paudel, Mari Hirota, Hyunsung Jun
H(Hydrogen)-Alpha Spectral Imaging Of Z>5 Quasars, Pratik Paudel, Mari Hirota, Hyunsung Jun
Celebration of Research
We aim to measure the H-alpha line excess over the photometric continuum for distant quasi-stellar radio objects, or quasars. Supermassive black holes grow in mass through accretion of stars or gas nearby, often outshining the total stellar light of the galaxies they reside in, for quasars. On the other hand, the structure of these active galactic nuclei are hard to resolve, where we often rely on the relationship in between different light emission regions to better understand the geometry and emission mechanisms. In this work, we measure the H-alpha luminosity of 44 quasars at z>5 (light coming from less …
Metabolic Characterization Of Porcine Hepatocytes, Sophie Swart, Ainslie Robinson, Daiki Jonouchi, Marcus Blankespoor, Kip Cullinan, Zachary Varpness, Ryan Schulze
Metabolic Characterization Of Porcine Hepatocytes, Sophie Swart, Ainslie Robinson, Daiki Jonouchi, Marcus Blankespoor, Kip Cullinan, Zachary Varpness, Ryan Schulze
Celebration of Research
No abstract provided.
The Impact Of Blood Flow Restriction On Heart Rate And Muscle Activation, Janaya Battles, Rajat Singh, Daniel Swier
The Impact Of Blood Flow Restriction On Heart Rate And Muscle Activation, Janaya Battles, Rajat Singh, Daniel Swier
Celebration of Research
Blood Flow Restriction (BFR) is a rehabilitation technique used in physical therapy to improve muscle growth in patients. The technique involves using blood cuffs on the limbs to occlude blood flow within the muscles, thus limiting the buildup of muscle growth inhibitors. The current literature provides information regarding these aspects but is limited in providing information regarding the impact of BFR on neural muscular coordination. Therefore, the purpose of this study was to determine how various pressure levels of the BFR cuffs can impact the muscle activation of the restrained muscles and heart rate. Our results have shown that a …
Phun With Phages: Discovering Novel Bacteriophages In The Soil, Julia Kutz, Ryan Dodds, Logan Dykstra, Taylor M. Rentschler, Emma Steinhardt, Megan Vangarven, Jacie Vanderwaal, Shayler Vangelder, Byron Noordewier, Sara S. Tolsma
Phun With Phages: Discovering Novel Bacteriophages In The Soil, Julia Kutz, Ryan Dodds, Logan Dykstra, Taylor M. Rentschler, Emma Steinhardt, Megan Vangarven, Jacie Vanderwaal, Shayler Vangelder, Byron Noordewier, Sara S. Tolsma
Celebration of Research
We used three bacterial hosts: Mycobacterium smegmatis, Microbacterium foliorum, and Gordonia terrae, to isolate novel bacteriophages from soil samples. We named these phages, created high titer lysates, and purified their DNA genomes. We have archived the high titer lysates at Northwestern College and the University of Pittsburgh. The genomes of three of our phages were sequences at the University of Pittsburgh and we will be sequencing the remaining genomes this summer. Additionally, we are planning to image our phages with transmission electron microscopy at the University of Iowa or Nebraska yet this semester.
2024 April 11 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University
2024 April 11 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University
Tennessee Climate Office Weekly Drought Summaries
No abstract provided.
The Effectiveness Of Using Near-Peer Role Models And Mentoring: A Phenomenological Reflection On Stem For Success, Bruce G. Bukiet, Cristo Leon, James Lipuma
The Effectiveness Of Using Near-Peer Role Models And Mentoring: A Phenomenological Reflection On Stem For Success, Bruce G. Bukiet, Cristo Leon, James Lipuma
STEM for Success Resources
The proper study of communication from existing models opens the doors to scientific research that allows exploring language and coding as an integral part of effective communication to generate new models that include Trans-Disciplinary Collaboration. The authors analyze the communication factors to describe the application of Trans-Disciplinary Communication. This paper aims to define communication processes and their relationship with language, considering their impact on trans-disciplinary collaboration and innovation. After conducting a systematic literature review, the article explored the concepts of communication, functions, language, and Trans-Disciplinary Communication. This led to its application in the convergence research approach presented in the Collaborative …
Context-Aware Affective Behavior Modeling And Analytics, Md Taufeeq Uddin
Context-Aware Affective Behavior Modeling And Analytics, Md Taufeeq Uddin
USF Tampa Graduate Theses and Dissertations
Affective computing (AC) is a sub-domain of AI that has the potential to assist people by assessing mental states and making appropriate recommendations to patients, loved ones, caregivers, and domain experts. Humans usually produce an enormous amount of data (such as face videos) every day. One of the major challenges for affective computer vision is to efficiently deal with high volumes of data to facilitate automated model development. To cope with this challenge, we developed computer vision algorithms that measure the expressivity of the human face from video data. More precisely, the developed algorithms can map complex affect information from …
Protecting American Children: A Social-Ecological Analysis Of Pactp4, Julia Rossmiller
Protecting American Children: A Social-Ecological Analysis Of Pactp4, Julia Rossmiller
Student Works
The quantity of pesticides used annually in the United States exceeds one billion pounds every year, and the amount is only rising. The current law that governs the use of pesticides—The Federal Insecticide, Fungicide and Rodenticide Act (FIFRA), permits the use of 72 known pesticides that have been proven harmful and are banned in other countries. Research links the usage of pesticides to the health of individuals, families, and whole communities within the environment. Moreover, dangerous pesticides have been shown to disproportionately affect children, agricultural workers, people of color, and low-income communities. Despite the mounting evidence that confirms the adverse …
Machine Learning Techniques For Intermediate Mass Gap Lepton Partner Searches At The Large Hadron Collider, Bhaskar Dutta, Tathagata Ghosh, Alyssa Horne, Jason Kumar, Sean Palmer, Pearl Sandick, Marcus Snedeker, Patrick Stengel, Joel W. Walker
Machine Learning Techniques For Intermediate Mass Gap Lepton Partner Searches At The Large Hadron Collider, Bhaskar Dutta, Tathagata Ghosh, Alyssa Horne, Jason Kumar, Sean Palmer, Pearl Sandick, Marcus Snedeker, Patrick Stengel, Joel W. Walker
Michigan Tech Publications, Part 2
We consider machine learning techniques associated with the application of a boosted decision tree (BDT) to searches at the Large Hadron Collider (LHC) for pair-produced lepton partners which decay to leptons and invisible particles. This scenario can arise in the minimal supersymmetric Standard Model (MSSM), but can be realized in many other extensions of the Standard Model (SM). We focus on the case of intermediate mass splitting (∼30 GeV) between the dark matter (DM) and the scalar. For these mass splittings, the LHC has made little improvement over LEP due to large electroweak backgrounds. We find that the use of …
Chemtrails: Deadly Skies Or Dangerous Misinformation?, Abigail Foust
Chemtrails: Deadly Skies Or Dangerous Misinformation?, Abigail Foust
Undergraduate Research Symposium
A common sight on a clear day is a thin strip of white across the otherwise blue sky: A contrail. Most people do not think anything of these contrails, and assume they have little to no impact on the world at large. Suppose for a moment, however, that they are not as harmless as some believe. Suppose these cloud trails are actually composed of dangerous chemicals, and are being used by sinister forces in a conspiracy to kill off the weak, mind-control the population, or simply dull our minds in preparation for a government takeover. As far-fetched as this may …
Heat's Effect On Asphalt Binders Using Nmr, Kaitlin Miles
Heat's Effect On Asphalt Binders Using Nmr, Kaitlin Miles
Undergraduate Research Conference at Missouri S&T
Nuclear Magnetic Resonance (NMR) spectroscopy is a well-known analytical technique that uses the excitation of nuclear spins for solving chemical structures and conformations. Relaxometry is a special field of NMR spectroscopy where information is gained about interactions of 100 nuclear spins with their molecular surroundings. The deterioration of asphalt is a major infrastructure problem, and its rejuvenation back toward its original virgin state is an important field of research and development. The current asphalt industry relies on visual inspection on site and invasive or destructive physical methods to assess emerging asphalt failures. This study examines the chemical changes environmental factors …
Amorphous Transparent Oxide P-Type Semiconductors, Joshua Santy
Amorphous Transparent Oxide P-Type Semiconductors, Joshua Santy
Undergraduate Research Conference at Missouri S&T
For decades, n-type transparent conducting oxides (TCOs) have been extensively studied and applied in various energy and optoelectronic devices. However, the search for high-performance p-type TCOs, crucial for transparent p-n junctions and next-generation microelectronics - remains uncertain. The most studied p-type TCOs (e.g ., Cu2O-based delafossite family) exhibit the carrier mobilities (<1 cm2Ns) that are much smaller than those in typical n-type TCOs (10-100 cm2Ns). In contrast to the Cu-based layered materials with a relatively flat Cu d10 valence band (resulting in the hole effective mass of 2.5me), Sn2+ in SnO has s2 electronic configuration giving rise to a significantly more dispersed valence band (the hole effective mass is 0.5me) and, hence, to higher hole mobility. Currently, the practical use of SnO is limited due to (i) stability issues of SnO associated with tin preference for valence 4 (as in SnO2, a well-known n-type TCO); (ii) small band gap ~0.7 eV; and (iii) anisotropic hole effective mass in the crystalline phase. Further search for p-type TCOs should involve amorphous phases of SnO-based multi-cation materials where metal composition helps stabilize Sn2+ and open the band gap, whereas the disordered structure is expected to result in uniform isotropic electronic properties and low scattering due to absence of grain boundaries.
Numerical Studies On Bose-Einstein Condensates, Megan Benkendorf
Numerical Studies On Bose-Einstein Condensates, Megan Benkendorf
Undergraduate Research Conference at Missouri S&T
Bose-Einstein condensate (BEC) is a state of matter near absolute zero temperature for which all atoms lose their individual properties and condense into a macroscopic coherent "super-wave". The superfluidity of BEC has been the focus of active research since the first experimental realization of BEC in 1995. The recent launch of the Cold Atom Laboratory to the space station on May 21, 2018, has once again drawn spotlights to these fascinating properties of BEC. In this project, we will carry out numerical studies to understand the behavior of exciton-polariton BECs. A modified Gross-Pitaevskii equation is used to model the dynamics …