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Nurture: A Campaign About Animal Adoption In The Philippines Through Digital Illustrations, Julianne P. Chuah May 2022

Nurture: A Campaign About Animal Adoption In The Philippines Through Digital Illustrations, Julianne P. Chuah

DLSU Senior High School Research Congress

This paper focuses on animal adoption in the Philippines and how art can influence people to support this action. Animal adoption is not given much attention in the country, and certain stigmas are surrounding such topics. Additionally, some people prefer to choose the breed of their pet, so they would instead buy from a breeder or a pet store rather than adopting one. This causes shelters to overpopulate with animals, ultimately resulting in the euthanization of some animals. This research aims to normalize animal adoption through art—in the form of a campaign. The paper also connects utilitarianism to adoption in …

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Factors Influencing The Career Decision Of Grade 12 Stem Students, Zharylle A. Estigoy, Gerri Ann C. Rimorin, Tracy Jane V. Wal May 2022

Factors Influencing The Career Decision Of Grade 12 Stem Students, Zharylle A. Estigoy, Gerri Ann C. Rimorin, Tracy Jane V. Wal

DLSU Senior High School Research Congress

Given the current situation, graduating senior high school students are conflicted in their decision-making process because of the pandemic. Students' course selection decisions are among the most important factors in determining their learning achievement and career advancement. The main objective of this research was to identify the most influential factors in students’ course selection in the context of a pandemic. A qualitative phenomenological research design was used in this study. It utilized a semi-structured interview with graduating senior high students through the use of Google Meet. The researchers used thematic analysis to analyze the qualitative interviews required for a phenomenological …

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Paper Review On Application Of Rice Hull Ash As Cement Additive: A Systematic Mapping Approach, Julianne Kate Y. Barra, Yvonne Kirsten N. Estrada, Karlaiah Simonne F. Ngo, Keith Asher N. So, Arnel B. Beltran May 2022

Paper Review On Application Of Rice Hull Ash As Cement Additive: A Systematic Mapping Approach, Julianne Kate Y. Barra, Yvonne Kirsten N. Estrada, Karlaiah Simonne F. Ngo, Keith Asher N. So, Arnel B. Beltran

DLSU Senior High School Research Congress

The amount of rice hull ash in the country continues to rise due to the increased consumption of rice, so utilizing methods to repurpose these wastes would be advantageous to the environment. The approximate number of rice hull wastes in the Philippines for 2021 is 3.96 million metric tons. Moreover, rice hull ash can be applied as an additive to cement because of its amorphous silica and alumina content. The performance of rice hull ash in cement can be affected by incineration under controlled temperatures. Hence, this study aims to evaluate the application of rice husk ash as cement additive …

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Cost-Effective Residential Learning Space Design Conducive To The Flexible Learning Of A Senior High School (Shs) Student Under The New Normal, Kerth Raven B. Ang, Schubert Dwayne T. Chua, James Christian T. Ruiz, Chester Russell U. Tan, Niña Ana Marie Jocelyn A. Sales May 2022

Cost-Effective Residential Learning Space Design Conducive To The Flexible Learning Of A Senior High School (Shs) Student Under The New Normal, Kerth Raven B. Ang, Schubert Dwayne T. Chua, James Christian T. Ruiz, Chester Russell U. Tan, Niña Ana Marie Jocelyn A. Sales

DLSU Senior High School Research Congress

The pandemic has forced every student enrolled in schools in the Philippines to study under the Flexible Model of Learning. Though a typical senior high school student seemed content with the teaching method, they appeared troubled by the constraints arising from their residence’s environment. The learning setups and space appeared inadequate and uncomfortable for their schooling and needs. The paper aimed to propose a home learning setup which considered all the possible factors affecting it, was DIY (do-it-yourself) ready, utilized cost-effective materials, and adhered to a positive level of acceptance from the target audience. Surveys were distributed to Senior High …

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Smart Grid Control: Demand Side Management In Household Refrigerators As A Tool For Load Shifting, Anogh Utkalika Zaman, James Doyle May 2022

Smart Grid Control: Demand Side Management In Household Refrigerators As A Tool For Load Shifting, Anogh Utkalika Zaman, James Doyle

Macalester Journal of Physics and Astronomy

With improved supply of renewable sources of energy the focus has shifted away from simply producing clean energy to efficient consumption of energy. Until cheaper methods of energy storage are developed, Demand Side Management (DSM) is the best option for maximising energy efficiency. This paper proposes a method of turning regular refrigerators into smart demand response fridges. First, we develop an algorithm that accounts for small fluctuations in price and switches the device for optimal performance and lowered running cost. Then, we use longer price fluctuations to predict suitable times for pre-cooling and investigate the reduction in price as a …

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Twisting Lasers With The Faraday Effect, Harrison Werrell May 2022

Twisting Lasers With The Faraday Effect, Harrison Werrell

Macalester Journal of Physics and Astronomy

Our objective with this project was to create a system and procedure to quantify the magnetization of a material with polarized light by using the Faraday Effect, where the light is rotated according to the magnetization. This type of system has seen use in technologies such as magneto-optical drives and optical isolators, and is part of the study of optical materials, along with the similar MagnetoOptical Kerr Effect. Our system, specifically, is intended to be used as part of an advanced Physics Lab in the future. It uses an electromagnet to magnetize a sample, and a laser to observe the …

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Electrical Analysis Of A Pem Electrolysis Cell, Joey Wehrley, James Doyle May 2022

Electrical Analysis Of A Pem Electrolysis Cell, Joey Wehrley, James Doyle

Macalester Journal of Physics and Astronomy

Polymer Electrolyte Membrane (PEM) electrolysis is a form of electrolysis that is heavily used in commercial capacities. It functions by using a membrane and an electric charge in order to perform electrolysis water, splitting it into its component parts - Hydrogen and Oxygen. These parts can then be used in a number of different applications, including reversing the electrolysis process to regenerate some energy in the form of electricity. During this experiment, multiple currents were run through a PEM cell, and voltages across the membrane were measured. It was found that a standard R/C charging model can be fit to …

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The Interaction Of Topological Defects In Anisotropically-Elastic Nematic Liquid Crystals, Carter J. Swift May 2022

The Interaction Of Topological Defects In Anisotropically-Elastic Nematic Liquid Crystals, Carter J. Swift

Macalester Journal of Physics and Astronomy

Topological defects are very well understood so long as the medium in which they exist is isotropically-elastic. They lead to director fields which are easy to calculate and superpose linearly so that a system with any number of defects is analytically treatable. They also have an interaction which is simple in form and can be accurately described by the Peach-Koehler force. In an anisotropically-elastic medium, however, such defects are very poorly understood outside of the single-defect case which was solved by Dzyaloshinskii. In this project, numerical and approximate analytical techniques are applied in order to better understand the interaction between …

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Neutrino Oscillations In The Presence Of A Magnetic Field, Chinhsan Sieng May 2022

Neutrino Oscillations In The Presence Of A Magnetic Field, Chinhsan Sieng

Macalester Journal of Physics and Astronomy

We calculate oscillation probabilities in the presence of an external magnetic field in a one-generation neutrino framework that includes both Majorana and Dirac mass terms. First, we write down the Euler-Lagrange equations and obtain a system of eight differential equations coupling together eight different neutrino states that can be distinguished by helicity, chirality, and particle/antiparticle-ness. We then solve this system of differential equations in various special cases, exhibiting different types of oscillations. When the magnetic field is in the direction of momentum, there are only four oscillation channels as helicity flip is forbidden. We observe that chirality flips are suppressed …

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The Impact Of Initial Abundances On Modeling The Weak S-Process, Lev S. Serxner May 2022

The Impact Of Initial Abundances On Modeling The Weak S-Process, Lev S. Serxner

Macalester Journal of Physics and Astronomy

No abstract provided.

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The Survey Of Hi In Extremely Low-Mass Dwarfs: New Results From Vla Imaging, Francesco Pecere, John M. Cannon, Damen Beverlin, Jackson Codd May 2022

The Survey Of Hi In Extremely Low-Mass Dwarfs: New Results From Vla Imaging, Francesco Pecere, John M. Cannon, Damen Beverlin, Jackson Codd

Macalester Journal of Physics and Astronomy

We present new HI spectral line imaging of 19 galaxies in the “Survey of HI in Extremely Low-mass Dwarfs” (SHIELD) acquired for Large Program VLA/ 20A-330. Using the National Radio Astronomy Observatory’s Karl G. Jansky Very Large Array (VLA) in the C configuration, we produce images of the neutral interstellar medium (HI) on angular scales of 15 to 20 arcseconds (corresponding to physical resolutions of 200 to 1100 parsecs). The three-dimensional cubes probe the morphology and kinematics of the gas at a range of spatial and spectral resolutions. The cubes were collapsed to produce two-dimensional moment maps (representing HI mass …

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Hunting For Fast Radio Bursts From Messier 82: Exploring The Frb--Magnetar Connection, Susie Paine May 2022

Hunting For Fast Radio Bursts From Messier 82: Exploring The Frb--Magnetar Connection, Susie Paine

Macalester Journal of Physics and Astronomy

Fast radio bursts (FRBs) are short-duration radio pulses of cosmological origin. Among the most common sources predicted to explain this phenomenon are bright pulses from a class of extremely highly magnetized neutron stars known as magnetars. In 2020, a Galactic magnetar produced an FRB-like burst, allowing researchers to constrain the Galactic magnetar burst rate. We assume that the magnetar burst rate scales with star formation rate and test an important prediction for similar bursts in nearby galaxies. Messier 82 (M82) has a star formation rate 40 times that of the Milky Way, implying that the magnetar burst rate would be …

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Finite-Difference-Time-Domain Simulation Of Ultrafast Experiments, Alpha Ma May 2022

Finite-Difference-Time-Domain Simulation Of Ultrafast Experiments, Alpha Ma

Macalester Journal of Physics and Astronomy

The Finite-Difference-Time-Domain (FDTD) method is a numerical method that calculates electric fields or magnetic fields by interleaving them in space and time. Using a python package called “MEEP”, I was able to write optical simulations of ultrafast experiments, especially the Terahertz Pump-Probe experiments. The goal of this project was to use FDTD simulation to measure the transmission of an electro-magnetic pulse passing through a thin film of conducting material on a dielectric substrate in order to study the characteristic conductivity of potential solar cell materials.

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Molecular Line Search In Archival Alma Imaging Of M87, Xueyi Li May 2022

Molecular Line Search In Archival Alma Imaging Of M87, Xueyi Li

Macalester Journal of Physics and Astronomy

We present a molecular line search in spectral imaging of the elliptical galaxy M87 using archival data from the Atacama Large Millimeter/sub-millimeter Array (ALMA). The primary goal of this project is to verify and characterize possible CO transition lines, which can be used for future studies to determine the dynamics of the system, or the mass of the supermassive black hole (BH) in the center of the galaxy. After performing extensive atmospheric modeling, we found that most of the absorption features have a corresponding atmospheric ozone transition, so it is unlikely that these features are either Galactic or extragalactic. We …

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Lie Algebras And The Poincare Group, Jack Hempel Costello May 2022

Lie Algebras And The Poincare Group, Jack Hempel Costello

Macalester Journal of Physics and Astronomy

This paper will discuss my research with
Professor Tonnis ter Veldhuis on the Poincare Group
and other similar algebraic approaches based on the
Minkowski Metric. This paper will begin with an
introduction discussing group theory and expand on its
specific applications in theoretical physics.

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Simulating Interactions Between Coronal Mass Ejections, Damen S. Beverlin, Tatiana Niembro May 2022

Simulating Interactions Between Coronal Mass Ejections, Damen S. Beverlin, Tatiana Niembro

Macalester Journal of Physics and Astronomy

Coronal mass ejections (CMEs) launch large amounts of plasma and magnetic fields into the interplanetary medium. Under the right initial conditions, this ejecta can reach Earth and cause issues with electronic devices. As such, we would like to have an accurate model that depicts how these CMEs propagate as they leave the sun. By using fluid dynamics and one-minute resolution in-situ solar wind data, we sought to simulate CME plasma propagation with analytical and numerical models. Because the interstellar medium contains other material and other events happen on the sun simultaneously, CMEs can interact with each other and other ejecta, …

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Custom Calibration And Correction Of Photoemission Electron Microscope Images Using Graphene, Henry Bell May 2022

Custom Calibration And Correction Of Photoemission Electron Microscope Images Using Graphene, Henry Bell

Macalester Journal of Physics and Astronomy

The Photoemission Electron Microscope (PEEM) is a full-field electron microscope that utilizes the photoelectric effect to image a surface. Due to a spatial resolution on the order of 10 nanometers and its ability to image both the morphology of a surface and its band structure, it is a useful tool for understanding the properties of materials for use in electronic devices. To correct for random sample misalignment and the experimental frame of reference in the spectroscopy mode of the PEEM, the 3D dataset must be rotated in both the momentum and energy coordinates which requires pixel calibration and energy alignment. …

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Knocking Down Nox: Examining The Effects Of Transportation Electrification On Urban Ozone Production In The South Coast Air Basin, Jason Beal May 2022

Knocking Down Nox: Examining The Effects Of Transportation Electrification On Urban Ozone Production In The South Coast Air Basin, Jason Beal

Macalester Journal of Physics and Astronomy

With last year’s commitment to all in-state sales of new passenger cars and trucks being zero-emission by 2035 (California Executive Order N-79-20), California is leading the charge for transportation electrification in the United States. Despite being at the forefront of climate change management and mitigation, California has some of the worst air quality in the nation. While primarily motivated by a desire to reduce carbon dioxide emissions and reliance on fossil fuels, transportation electrification will also have a significant impact on local air quality. The goal of this study is to quantify and qualify this impact in the context of …

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Scandy: Simulating Realistic Human Scanpaths In Dynamic Real-World Scenes, Nicolas Roth, Martin Rolfs, Klaus Obermayer May 2022

Scandy: Simulating Realistic Human Scanpaths In Dynamic Real-World Scenes, Nicolas Roth, Martin Rolfs, Klaus Obermayer

MODVIS Workshop

No abstract provided.

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Fixational Eye Movements, Perceptual Filling-In, And Perceptual Fading Of Grayscale Images, Michael E. Rudd May 2022

Fixational Eye Movements, Perceptual Filling-In, And Perceptual Fading Of Grayscale Images, Michael E. Rudd

MODVIS Workshop

No abstract provided.

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Constraining Computational Models Of Brightness Perception: What’S The Right Psychophysical Data?, Guillermo Aguilar, Joris Vincent, Marianne Maertens May 2022

Constraining Computational Models Of Brightness Perception: What’S The Right Psychophysical Data?, Guillermo Aguilar, Joris Vincent, Marianne Maertens

MODVIS Workshop

No abstract provided.

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Cut The Cacophony: Creating Effective Visual Materials For Teaching, Rachel Evans, Jennifer Mart-Rice May 2022

Cut The Cacophony: Creating Effective Visual Materials For Teaching, Rachel Evans, Jennifer Mart-Rice

Teaching the Teachers Conference

Teaching legal research can be dense, multi-layered, and downright difficult. Conveying the information you need to students in an accessible and understandable way can be tough, particularly when you need to translate and condense complex subject matter into tangible teaching materials. In this collaborative workshop, presenters Jennifer Mart-Rice and Rachel Evans team up to combine their collective instructional experiences and work with attendees to design impactful visuals for the classroom. Attendees will learn about the must-haves and best practices for handouts and slide decks before being broken into groups where they will select a challenging slide deck and put their …

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Tiling Rectangles And 2-Deficient Rectangles With L-Pentominoes, Monica Kane May 2022

Tiling Rectangles And 2-Deficient Rectangles With L-Pentominoes, Monica Kane

Rose-Hulman Undergraduate Mathematics Journal

We investigate tiling rectangles and 2-deficient rectangles with L-pentominoes. First, we determine exactly when a rectangle can be tiled with L-pentominoes. We then determine locations for pairs of unit squares that can always be removed from an m × n rectangle to produce a tileable 2-deficient rectangle when m ≡ 1 (mod 5), n ≡ 2 (mod 5) and when m ≡ 3 (mod 5), n ≡ 4 (mod 5).

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Identifying And Localizing Multiple Objects Using Artificial Ventral And Dorsal Visual Cortical Pathways, Zhixian Han, Anne Sereno May 2022

Identifying And Localizing Multiple Objects Using Artificial Ventral And Dorsal Visual Cortical Pathways, Zhixian Han, Anne Sereno

MODVIS Workshop

We concluded in our previous study that model cortical visual pathways actively retained information differently according to the different goals of the training tasks. One limitation of our study was that there was only one object in each input image whereas in reality there may be multiple objects in a scene. In our current study, we try to find a brain-like algorithm that can recognize and localize multiple objects.

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Modeling Perceptual Grouping Strategies In Visual Search Tasks, Maria Kon, Gregory Francis May 2022

Modeling Perceptual Grouping Strategies In Visual Search Tasks, Maria Kon, Gregory Francis

MODVIS Workshop

No abstract provided.

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Model Of Visual Contrast Gain Control And Pattern And Noise Masking, Joshua A. Solomon May 2022

Model Of Visual Contrast Gain Control And Pattern And Noise Masking, Joshua A. Solomon

MODVIS Workshop

The first stage of the model can be subdivided into a global contrast sensitivity function (a 2-D log-parabolic filter of spatial frequency), followed by an array of sensors having Gabor-pattern receptive fields. The second stage is contrast gain control. At this stage, sensor outputs are subjected to an expansive transformation. Then the outputs are pooled and used to inhibit (or “normalize”) each other. Inhibition is strongest between sensors with similar preferences for orientation, spatial frequency and spatial location. In the final stage of the model, the nomalized sensor outputs for each image are subjected to Minkowski pooling. Two-alternative, forced-choice detection …

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Beta-Alanine Supplementation And Anaerobic Performance In Highly Trained Judo Athletes, Mateusz Halz, Magdalena Kaszuba, Jonatan Helbin, Sara Krzysztofik, Aleksandra Suchanecka, Adam Zając May 2022

Beta-Alanine Supplementation And Anaerobic Performance In Highly Trained Judo Athletes, Mateusz Halz, Magdalena Kaszuba, Jonatan Helbin, Sara Krzysztofik, Aleksandra Suchanecka, Adam Zając

Baltic Journal of Health and Physical Activity

Introduction. Previous studies have shown that several weeks of beta-alanine (BA) supplementation increases anaerobic work capacity and decreases muscular fatigue, but limited research was conducted on elite martial arts athletes. Therefore, the purpose of this study was to investigate the effect of chronic BA supplementation on high-intensity intermittent upper and lower-body performance in highly-trained judo athletes. Material and Methods: Sixteen elite judo athletes (21.8 ± 2.5 years old) were randomly assigned to receive either BA (4 g/d over the first 2 weeks and 6 g/d in the last 2 weeks) or placebo for 4 weeks. Before and after BA supplementation, …

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Participation In Higher Intensity Physical Activity Predicts Lower Depressive Symptom Incidence In College Students, Lucas D. Elliott, Oliver Wilson, Michele Duffey, Melissa Bopp May 2022

Participation In Higher Intensity Physical Activity Predicts Lower Depressive Symptom Incidence In College Students, Lucas D. Elliott, Oliver Wilson, Michele Duffey, Melissa Bopp

International Journal of Exercise Science

International Journal of Exercise Science 15(7): 667-675, 2022. The prevalence of depression and insufficient physical activity (PA) continue to rise in the United States, particularly among college students. PA is typically associated with decreased levels of depressive symptoms; however, the association between different intensities of PA and depressive symptoms is unclear among college students. The aim of this study was to examine how well weekly moderate PA (MPA), vigorous PA (VPA) and strength training (ST) volumes predicted depressive symptoms in college students. Students self-reported weekly MPA, VPA, ST, depressive symptoms (CESD-7), restful nights of sleep, grade point average (GPA) and …

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Montmorency Cherry Juice Consumption Does Not Improve Muscle Soreness Or Inhibit Pro-Inflammatory Monocyte Responses Following An Acute Bout Of Whole-Body Resistance Training., Devin Drummer, Kelly Pritchett, Gina M. Many, Blaise Dondji, Kathleen Connor, Jerusalem Tesfaye, Mark Young, Robert C. Pritchett May 2022

Montmorency Cherry Juice Consumption Does Not Improve Muscle Soreness Or Inhibit Pro-Inflammatory Monocyte Responses Following An Acute Bout Of Whole-Body Resistance Training., Devin Drummer, Kelly Pritchett, Gina M. Many, Blaise Dondji, Kathleen Connor, Jerusalem Tesfaye, Mark Young, Robert C. Pritchett

International Journal of Exercise Science

International Journal of Exercise Science 15(6): 686-701, 2022. Montmorency Cherry Juice (MCJ) may­­­ improve acute exercise recovery by attenuating inflammation and oxidative stress. However, the anti-inflammatory effects of MCJ on monocyte responses following resistance exercise have not been explored. Seven resistance-trained males (age: 22.9 ± 4.1 yrs; height: 1.8 ± 0.1 m; weight: 81.7 ± 13.2 kg) participated in this study. Participants completed a placebo-controlled crossover design, drinking either MCJ or placebo beverages, 7 days prior to completing an acute bout of unilateral resistance exercise. Statistical significance was assessed using a within-subjects repeated measures ANOVA; alpha level p ≤ 0.05. …

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Acute Dose-Response Of Duration During The Plank Exercise On Muscle Thickness, Echo-Intensity, Peak Force, And Perception Of Effort In Recreationally-Trained Participants, Dani Al Sheikh Aleais, Keanna Sullivan, Paula Ferreira, Priscyla N. Marchetti, Paulo Henrique Marchetti May 2022

Acute Dose-Response Of Duration During The Plank Exercise On Muscle Thickness, Echo-Intensity, Peak Force, And Perception Of Effort In Recreationally-Trained Participants, Dani Al Sheikh Aleais, Keanna Sullivan, Paula Ferreira, Priscyla N. Marchetti, Paulo Henrique Marchetti

International Journal of Exercise Science

International Journal of Exercise Science 15(6): 676-685, 2022. The primary purpose of this study was to evaluate the acute effects of different durations of the isometric forearm plank exercise (IFPE) on peak force, echo intensity, muscle thickness, and perception of effort in recreationally-trained participants. Fifteen resistance-trained participants (23±3years, 76.4±6.5kg, 173.3±6.5cm) performed the IFPE with bodyweight in one of three durations in a randomized order: a). 1-min, b). 2-min, and c). 3-min. Muscle thickness (MT), echo intensity (EI), peak force (PF), and rating of perceived exertion (RPE) were measured pre-test and post-test. Two-way repeated-measures ANOVAs (2x3) were used to test differences …

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