Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Chemistry (1068)
- Computer Sciences (268)
- Mathematics (246)
- Environmental Sciences (244)
- Earth Sciences (153)
-
- Physics (143)
- Life Sciences (110)
- Geology (81)
- Oceanography and Atmospheric Sciences and Meteorology (77)
- Astrophysics and Astronomy (68)
- Social and Behavioral Sciences (66)
- Engineering (65)
- Education (57)
- Organic Chemistry (50)
- Sustainability (50)
- Oceanography (45)
- Environmental Monitoring (44)
- Applied Mathematics (43)
- Arts and Humanities (43)
- Medicine and Health Sciences (41)
- Biochemistry, Biophysics, and Structural Biology (35)
- Physical Chemistry (34)
- Higher Education (32)
- Natural Resources and Conservation (32)
- Artificial Intelligence and Robotics (30)
- Atomic, Molecular and Optical Physics (29)
- Software Engineering (28)
- Analytical Chemistry (27)
- Geophysics and Seismology (26)
- Institution
-
- Union College (729)
- University of Mississippi (251)
- Colby College (223)
- Louisiana State University (189)
- Ouachita Baptist University (108)
-
- University of Tennessee at Chattanooga (99)
- Western Michigan University (98)
- University of Richmond (95)
- The University of Southern Mississippi (88)
- Coastal Carolina University (65)
- University of Nebraska - Lincoln (58)
- Bucknell University (43)
- University of Dayton (40)
- Andrews University (31)
- Assumption University (13)
- Texas A&M University-Commerce (12)
- University of South Alabama (6)
- Harding University (3)
- University of New Haven (3)
- Dominican University of California (2)
- Lincoln Memorial University (1)
- Montana Tech Library (1)
- Keyword
-
- Undergraduate research (41)
- Chemistry (15)
- Energy (15)
- Synthesis (15)
- Climate change (14)
-
- Geology (13)
- Physics (13)
- Machine learning (12)
- Mathematics (12)
- Sustainability (11)
- Water quality (10)
- Carbon (9)
- Environment (8)
- Water (8)
- American chestnut (7)
- Design (7)
- Education (7)
- Figure (7)
- Maine (7)
- Pollution (7)
- Sedimentology (7)
- Artificial intelligence (6)
- Biochemistry (6)
- Cancer (6)
- Carbon dioxide (6)
- Computer Science (6)
- Computer simulation (6)
- Conservation (6)
- Graph theory (6)
- Heavy metals (6)
- Publication Year
- Publication Type
Articles 571 - 600 of 2158
Full-Text Articles in Physical Sciences and Mathematics
Classically Biased: A Quantitative Analysis Of Gender & Writing Styles In Classical Literature, Madeleine Rose Delcambre
Classically Biased: A Quantitative Analysis Of Gender & Writing Styles In Classical Literature, Madeleine Rose Delcambre
Honors Theses
This thesis is a first attempt in assessing patterns related to gender in classical literature prior to the 21st century, specifically looking at the way writing styles and language di↵er among female and male authors; e.g., sentence structuring, lexical diversity, and dictionary similarities. Further topics of analysis included gender distribution and sentiment within the novels themselves. Seventy-eight open-source novels were used in the analysis, with thirty-one books by female authors and forty-seven by male authors. Data from the novels was acquired using Python, natural language processing, and the Natural Language Toolkit (NLTK). Graphs and visuals were then created to summarize …
Dworkinian Liberalism, The Right To Pornography, And The Internet, Will Nowell
Dworkinian Liberalism, The Right To Pornography, And The Internet, Will Nowell
Honors Theses
In a 1981 journal article, “Is There A Right to Pornography?,” Ronald Dworkin argues that we have a right to ethical independence that includes the right to consume pornography. The purpose of this thesis is to inquire as to whether Dworkinian liberalism does entail a right to specifically internet pornography. This research is primarily focused on Ronald Dworkin’s writings in Justice for Hedgehogs, Sovereign Virtue: The Theory and Practice of Equality, and Taking Rights Seriously to describe the principles and character of Dworkinian liberalism and its philosophical relationship to the question of the right to pornography. This thesis considers contemporary …
The Intersection Of Literacy And Digital Literacy: Incorporating Writing Standards With Computer Technology Standards, Grace Mcpherson
The Intersection Of Literacy And Digital Literacy: Incorporating Writing Standards With Computer Technology Standards, Grace Mcpherson
Honors Theses
This project aims to increase access to computer science/computer technology education by providing teachers resources to enable them to teach computer science/computer technology. A survey was taken to discover the interests and needs of teachers in Hamilton County, Tennessee. The project resulted in the creation of several lesson plans that integrate English and computer science through hands-on web development exercises, computational thinking opportunities, and critical thinking.
Cigarette Litter Leachates: A Statistical Study Of Elements In Freshwater And Saltwater, Cintly Guzman Hernandez
Cigarette Litter Leachates: A Statistical Study Of Elements In Freshwater And Saltwater, Cintly Guzman Hernandez
Honors Theses
Cigarette butts are the most common item found in coastal litter cleanups as approximately 4.5 trillion smoked cigarette butts are discarded into the environment every year. Cigarette butts can leach toxic heavy metals and nicotine along with other compounds from tobacco combustion. Past research in our lab has analyzed elements leached from cigarette butts into freshwater. The cigarette butts consisted of smoked and unsmoked butts that were soaked varying periods of time, and at different pH levels to identify the relationship of these variables to the amount of metal leached. The elements analyzed were Al, Ba, Cd, Cr, Cu, Fe, …
Scheduling Problems, Aamir Kudai
Scheduling Problems, Aamir Kudai
Honors Theses
Manufacturing industry is growing exponentially. The need of using algorithms and computational techniques to enhance processes is increasing every day. Algorithms help us solve almost all kind of computational problems. Not only choosing the right algorithm for a problem is important but also optimizing its time and space efficiency is crucial. BorgWarner Transmission Systems located in Water Valley, Mississippi is one among the leading manufacturing companies. This paper will demonstrate a real-world audit scheduling problem happened at BorgWarner and the techniques used to solve it. A gentle introduction to some of the heuristic algorithms such as Genetic algorithm, Randomized algorithm, …
Community-Based Research Methods To Inform Public Health Practice And Policy: The Case Of Lead In The Mississippi Delta, Mary Alexandra Fratesi
Community-Based Research Methods To Inform Public Health Practice And Policy: The Case Of Lead In The Mississippi Delta, Mary Alexandra Fratesi
Honors Theses
Environmental health issues are complex and require interdisciplinary and community engagement approaches to better understand them and inform policy. As one example, lead exposure has a number of dangerous neurological effects, including developmental delays and learning deficits. Potential lead exposure through drinking water and paint are areas of concern. In a 2018 document, the Environmental Protection Agency (EPA) estimated that up to 20% of lead exposure comes from drinking water alone. By using a type of engagement research called community-based research (CBR), this project began to address this major public health issue. CBR can be used to connect residents, their …
Disappearance Of Phragmites In Louisiana And Nipponaclerda Biwakoensis, Rachel Tugger
Disappearance Of Phragmites In Louisiana And Nipponaclerda Biwakoensis, Rachel Tugger
Honors Theses
No abstract provided.
Quantitative Appraisal Of Non-Irrigated Cropland In South Dakota, Shelby Riggs
Quantitative Appraisal Of Non-Irrigated Cropland In South Dakota, Shelby Riggs
Honors Theses
This appraisal attempts to remove subjectivity from the appraisal process and replace it with quantitative analysis of known data to generate a fair market value of the subject property. Two methods of appraisal were used, the income approach and the comparable sales approach. For the income approach, I used the average cash rent for the region, the current property taxes for the subject property, and a capitalization rate based on Stokes' (2018) capitalization rate formula to arrive at my income-based valuation. For the comparable sales approach, I utilized Stokes' (2018) research in optimization modeling to estimate a market value for …
Sediment Accumulation And Bioturbation An A Tropical-Carbonate Mangrove Forest On A Pacific Atoll: Ouvéa, New Caledonia, Ryder Myers
Honors Theses
No abstract provided.
Characterizing Diatom Biofilms And Their Influence On The Sand Biogeochemistry Of High Energy Beaches, Logan C. Jarrell
Characterizing Diatom Biofilms And Their Influence On The Sand Biogeochemistry Of High Energy Beaches, Logan C. Jarrell
Honors Theses
High energy beaches are among the most dynamic ecological settings on Earth. Compared to mudflats, diatoms of high energy beaches have been more neglected in the literature, particularly true of the intertidal biofilms that form and dissipate with nutrient cycling and light intensity over the tidal cycle. Although short lived, the productivity of these biofilms may be critical to the organic-poor sand. Through sediment coring and subsequent analyses of the uppermost sand of three suspected biofilm stations—non-runnel, runnel crest, and runnel trough—along with seemingly bare sand as a control, this study sought to verify the presence of diatom biofilms and …
Visualizing Extreme Precipitation For Climate Storytelling, Rachel Phinney
Visualizing Extreme Precipitation For Climate Storytelling, Rachel Phinney
Honors Theses
Precipitation can have adverse effects in the climate ecosystem. Too much can impose concerns such as flooding and landslides, resulting in damaged property, agricultural losses, and loss of life. Too little, and drought becomes an issue, inducing wildfires, poor air quality, agricultural losses, and health degradation. The contiguous United States has experienced an increase in precipitation since 1900, and much of this has occurred in the most recent decades. By the end of the 21st Century, it is expected that more winter and spring precipitation will occur over the northern portion of the U.S., and less in the southwest. While …
Electro- And Photocatalytic Carbon Dioxide Reduction With Mononuclear And Dinuclear Rhenium Polypyridyl Complexes, Eva Amatya
Honors Theses
The main challenge of reducing carbon dioxide (CO2) to value-added products lies in designing more efficient catalysts that are long-lived, selective, and operate near the thermodynamic potential for the reaction. In this work, mononuclear and dinuclear Re complexes containing diamine ligands linked to a pendant anthracene moiety have been synthesized and studied for both electrocatalytic and photocatalytic CO2 reduction. Electrocatalytically, the performances of both catalysts were studied in N,N-dimethylformamide (DMF) and acetonitrile (MeCN) solutions to determine their turnover frequencies (TOFs) for CO2 reduction. Catalyst performance was compared to previously reported rhenium systems, and both systems studied here were shown to …
Quantifying The Effect Of Dietary Restriction On Lifespans In Saccharomyces Cerevisiae, Kathryn Rouse
Quantifying The Effect Of Dietary Restriction On Lifespans In Saccharomyces Cerevisiae, Kathryn Rouse
Honors Theses
Dietary restriction (DR) increases lifespan in many organisms. The effect of DR is best studied in the budding yeast Saccharomyces cerevisiae; however, previous studies of the DR effect on yeast lifespan tend to be qualitative. Here, we quantitatively study the effect of DR on lifespan for a selection of gene deletions in a 168-strain set of Saccharomyces cerevisiae. Lifespans of these yeast mutants were measured in YPD with 2% glucose and 0.05% glucose conditions. To quantify the aging process and its influence by DR, we fit yeast lifespan data with a three-parameter network aging model that is informative of the …
Evaluation Of Blight Resistance In Chestnut F2 Half-Sibling And Full-Sibling Families Via Small Stem Assay, Kevin Gentner
Evaluation Of Blight Resistance In Chestnut F2 Half-Sibling And Full-Sibling Families Via Small Stem Assay, Kevin Gentner
Honors Theses
In 1904, Cryphonectria parasitica, the causal agent for chestnut blight, was imported into North America on chestnut nursery stock from China. Fifty-five years later, nearly all full-grown wild American chestnut trees (Castanea dentata) were dead. A century of work has been put into restoring the American chestnut to its rightful place among the forest canopy. Since the 1980s, The American Chestnut Foundation has pursued backcross breeding to introgress blight resistance into C. dentata from the resistant Chinese species (C. mollissima), and has used progeny testing to make predictions about parental resistance in B3F2 chestnuts. We performed a small stem assay …
Synthesis And Characterization Of Organically Modified Hectorites For Sequestration Of Pfaas From Contaminated Drinking Water, Alexandra Pagano
Synthesis And Characterization Of Organically Modified Hectorites For Sequestration Of Pfaas From Contaminated Drinking Water, Alexandra Pagano
Honors Theses
Perfluoroalkyl Acids (PFAAs), a family of industrial chemicals, are found in household products such as pizza boxes, microwave popcorn bags, and non-stick pans. PFAAs of different carbon chain lengths and ionic head groups exist, such as PFOA (perfluorooctanoic acid) and PFOS (perfluorooctane sulfonic acid). Used without regulation in industry for decades, PFAAs only recently became recognized as contaminants of emerging concern, since they are bioaccumulative in organisms, persistent in the environment, and toxic. PFAAs are known to accumulate in the blood, liver and kidneys, and drinking water contaminated with PFAAs has been linked to certain types of cancer. Therefore, it …
Optimization Of Superhydrophobic Surface Production Using Ambient-Dried Silica-Based Aerogels, Elizabeth Donlon
Optimization Of Superhydrophobic Surface Production Using Ambient-Dried Silica-Based Aerogels, Elizabeth Donlon
Honors Theses
Superhydrophobic surfaces exhibit particular properties that make them functional in various anti-sticking, anti-contamination, self-cleaning and drag reduction applications. Though such surfaces are found in nature - most notably the lotus leaf - they are difficult to produce. There are numerous methods and techniques for fabricating superhydrophobic surfaces. One such method is the sol-gel method, in which aerogel, a highly porous and lightweight material that can be made hydrophobic or superhydrophobic, is coated onto a surface. The purpose of this project is to devise a simple and repeatable procedure for making hydrophobic silica aerogel coatings that can be used for drag …
Petrology And Thermodynamic Modeling Of Amphibolite Facies Rocks Of The Blåhø Nappe Of The Middle Allochthon, Scandinavian Caledonides In Norway, Maria Van Nostrand
Petrology And Thermodynamic Modeling Of Amphibolite Facies Rocks Of The Blåhø Nappe Of The Middle Allochthon, Scandinavian Caledonides In Norway, Maria Van Nostrand
Honors Theses
The Scandinavian Caledonides are an orogenic belt formed when Baltica collided with Laurentia during the late Silurian to early Devonian (Scandian, ~426–390 Ma, Gee et al., 2008). The thrust sheets forming the belt are divided into the Lower, Middle, Upper, and Uppermost Allochthons derived, respectively, from the Baltican margin and regions progressively farther outboard. This study focuses on the Blåhø Nappe, part of the Middle Allochthon, which is generally presumed to have been from an Early Paleozoic volcanic arc off the Baltican margin. The Blåhø Nappe contains abundant igneous and sedimentary rocks, metamorphosed almost entirely at amphibolite facies, but contains …
Environmental Clearinghouse Of Schenectady, Kate Van Patten
Environmental Clearinghouse Of Schenectady, Kate Van Patten
Honors Theses
This paper analyses Environmental Clearinghouse of Schenectady, a local nonprofit environmental organization. The paper investigates the history of the organization as well as the effectiveness of its organizational and funding habits. A literary review was conducted to analyze the success of ECOS mission as well as the positive effects ECOS has on society using elements such as environmental education, the importance of early environmental education, how well the organization connects urban residents with the outdoors and the effectiveness of environmental programs. This research promotes the importance of early environmental education on our future generations health and environmental conditions. Additionally, through …
Iterated Local Search Algorithms For Bike Route Generation, Aidan Pieper
Iterated Local Search Algorithms For Bike Route Generation, Aidan Pieper
Honors Theses
Planning routes for recreational cyclists is challenging because they prefer longer more scenic routes, not the shortest one. This problem can be modeled as an instance of the Arc Orienteering Problem (AOP), a known NP-Hard optimization problem. Because no known algorithms exist to solve this optimization problem efficiently, we solve the AOP using heuristic algorithms which trade accuracy for speed. We implement and evaluate two different Iterated Local Search (ILS) heuristic algorithms using an open source routing engine called GraphHopper and the OpenStreetMap data set. We propose ILS variants which our experimental results show can produce better routes at the …
2018 Ieee Signal Processing Cup: Forensic Camera Model Identification Challenge, Michael Geiger
2018 Ieee Signal Processing Cup: Forensic Camera Model Identification Challenge, Michael Geiger
Honors Theses
The goal of this Senior Capstone Project was to lead Union College’s first ever Signal Processing Cup Team to compete in IEEE’s 2018 Signal Processing Cup Competition. This year’s competition was a forensic camera model identification challenge and was divided into two separate stages of competition: Open Competition and Final Competition. Participation in the Open Competition was open to any teams of undergraduate students, but the Final Competition was only open to the three finalists from Open Competition and is scheduled to be held at ICASSP 2018 in Calgary, Alberta, Canada. Teams that make it to the Final Competition will …
Optimizing Tensegrity Gaits Using Bayesian Optimization, James Boggs
Optimizing Tensegrity Gaits Using Bayesian Optimization, James Boggs
Honors Theses
We design and implement a new, modular, more complex tensegrity robot featuring data collection and wireless communication and operation as well as necessary accompanying research infrastructure. We then utilize this new tensegrity to assess previous research on using Bayesian optimization to generate effective forward gaits for tensegrity robots. Ultimately, we affirm the conclusions of previous researchers, demonstrating that Bayesian optimization is statistically significantly (p < 0:05) more effective at discovering useful gaits than random search. We also identify several flaws in our new system and identify means of addressing them, paving the way for more effective future research.
Galois Theory And The Quintic Equation, Yunye Jiang
Galois Theory And The Quintic Equation, Yunye Jiang
Honors Theses
Most students know the quadratic formula for the solution of the general quadratic polynomial in terms of its coefficients. There are also similar formulas for solutions of the general cubic and quartic polynomials. In these three cases, the roots can be expressed in terms of the coefficients using only basic algebra and radicals. We then say that the general quadratic, cubic, and quartic polynomials are solvable by radicals. The question then becomes: Is the general quintic polynomial solvable by radicals? Abel was the first to prove that it is not. In turn, Galois provided a general method of determining when …
Characterization Of Glacial Sediments From A 700,000-Year-Old Lake Junín Drill Core, Tshering Lama Sherpa
Characterization Of Glacial Sediments From A 700,000-Year-Old Lake Junín Drill Core, Tshering Lama Sherpa
Honors Theses
Lake Junín (11.0°S, 76.2°W) is an intermontane lake at an elevation of 4085 masl in Junín, Peru. The lake spans ~300 km2 and has a water depth of ~12m. It is dammed at its northern and southern ends by glacial alluvial fans that have been dated >250 ka, indicating that the lake is at least this old. Lake Junín has never been overridden by ice in the past 1 million years making it one of the few lakes in the tropical Andes that predates the last maximum extent of glaciation and has a continuous record of waxing and waning of …
Elementary Computational Fluid Dynamics Using Finite-Difference Methods, Jason Turner, Scott Labrake
Elementary Computational Fluid Dynamics Using Finite-Difference Methods, Jason Turner, Scott Labrake
Honors Theses
Fluids permeate all of human existence, and fluid dynamics serves as a rich field of research for many physicists. Although the mathematics involved in studying fluids tends to get complicated, the physical intuition gained through daily exposure to such systems bridges the gap between abstract calculations and their physical meaning. We discuss the mathematical treatment and simulations of fluid flows found in everyday life, such as flow in a cavity and through a pipe. Our discussions follow the example set by several notable texts, referenced in the document.
An Empirical Analysis Of Climatic, Geographic, And Cultural Determinants Of International Tourism, Ethan Straus
An Empirical Analysis Of Climatic, Geographic, And Cultural Determinants Of International Tourism, Ethan Straus
Honors Theses
Each year, billions of people visit different countries all around the world. For many of those countries, tourism is their primary industry, leading to millions of jobs and dollars in revenue. It is expected that by 2020 total International Tourism Receipts will reach 2 trillion US dollars annually. Currently, tourism employs an estimated 200 million people around the world. With the continued progression of climate change, the tourism industry is facing a newfound threat. Global temperatures and the seal level are both expected to rise significantly by the end of the century. Additionally, the Intergovernmental Panel on Climate Change has …
A Study On The Extrasolar Transits Of Wasp-89b, Wasp-32b, And Hat-P-23b, Conner Kelley
A Study On The Extrasolar Transits Of Wasp-89b, Wasp-32b, And Hat-P-23b, Conner Kelley
Honors Theses
No abstract provided.
Single And Multiparameter Estimation Using Multimode Interferometry And Single Photons, Margarite L. Laborde
Single And Multiparameter Estimation Using Multimode Interferometry And Single Photons, Margarite L. Laborde
Honors Theses
No abstract provided.
Proverbial Machine Translation: Translating Proverbs Between Spanish And English Using Phrased Based Statistical Machine Translation With The Grammatical Category Based Approach, Teneala Spencer
Honors Theses
The focus of the research presented in the paper is translating the non-literal interpretation of proverbs from Spanish to English without changing their intended meaning. Proverbs have limited variation in comparison to slang, poetry, and metaphors which tend to differ significantly within the context that they are used. Although there are many other approaches for machine translation (MT), the one most suitable for the research project is Phrased Based Statistical Machine translation used in conjunction with the Grammatical Category- Based approach.
Applications Of Varying Leadership Structures For Software Engineering Teams, Elliot Sandfort
Applications Of Varying Leadership Structures For Software Engineering Teams, Elliot Sandfort
Honors Theses
This thesis explores the similarities and differences between applications of managing software engineering teams in Design Studio and the state of the practice. Information about the leadership structure of Design Studio teams was gathered over 3 semesters of Design Studio experiences with two companies: Hudl and TD Ameritrade. Information about leadership concepts in the state of the practice was gathered from experiences and observations with three different companies: Hudl, Garmin, and TD Ameritrade. From these experiences and observations, it can be concluded that the leadership structure of Design Studio is valuable as a student learning experience, and with proper consideration …
Treating Breast Cancer With Light: The Creation Of Two Photodynamic Therapy Agents, Victoria Lackey
Treating Breast Cancer With Light: The Creation Of Two Photodynamic Therapy Agents, Victoria Lackey
Honors Theses
Photodynamic therapy (PDT) is a treatment for a wide display of diseases, including cancer, that has become gradually widespread. The procedure requires the usage of photosynthesizing agents, which are activated in the presence of light. One quite successful photodynamic therapy agent is an aromatic structure made up of four pyrrole rings called a porphyrin. This research focused on producing the water-soluble porphyrins, H2TPP-3-PEG-OH and H2TPP-PiperMe-OH, through the attachment of the starting porphyrin, H2TPPC, with 3-polyethyleneglycol and 3-piperidinemethanol, respectively. The novel, water-soluble agent was purified and characterized by infrared spectroscopy (IR), nuclear magnetic resonance spectroscopy (NMR), and UV-vis spectroscopy. Purity was …