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Full-Text Articles in Physical Sciences and Mathematics

Time Dependent Orienteering Problem With Time Windows And Service Time Dependent Profits, M. Khodadadian, A. Divsalar, C. Verbeeck, Aldy Gunawan, P. Vansteenwegen Jul 2022

Time Dependent Orienteering Problem With Time Windows And Service Time Dependent Profits, M. Khodadadian, A. Divsalar, C. Verbeeck, Aldy Gunawan, P. Vansteenwegen

Research Collection School Of Computing and Information Systems

This paper addresses the time dependent orienteering problem with time windows and service time dependent profits (TDOPTW-STP). In the TDOPTW-STP, each vertex is assigned a minimum and a maximum service time and the profit collected at each vertex increases linearly with the service time. The goal is to maximize the total collected profit by determining a subset of vertices to be visited and assigning appropriate service time to each vertex, considering a given time budget and time windows. Moreover, travel times are dependent of the departure times. To solve this problem, a mixed integer linear model is formulated and a ...


Exploring The Effectiveness Of Multiple-Exemplar Training For Visual Analysis Of Ab-Design Graphs, Verena S. Bethke Jun 2022

Exploring The Effectiveness Of Multiple-Exemplar Training For Visual Analysis Of Ab-Design Graphs, Verena S. Bethke

Dissertations, Theses, and Capstone Projects

In behavior analysis, data are usually analyzed using visual analysis of the graphed data. There are a wide range of methods used to visually analyze data, from a basic ‘textbook’ style approach to the use of visual aids, decision-rubrics, and computer-based approaches. In the literature, there have been some comparisons of the efficacy of different approaches. Visual analysis as a behavior can be taught using a variety of methods, independent of how the skill itself is to be performed. Teaching methods include lecture, online instruction, and equivalence-based instruction. There is not much research on the teaching of visual analysis specifically ...


Female Sex Offenders: Double Standards, Sofia Enes May 2022

Female Sex Offenders: Double Standards, Sofia Enes

Kean Quest

This paper will discuss female pedophiles, rapists, and sex offenders, also known as female sex criminals, the double standards, of how they are viewed in the criminal justice system, how the medical fields view them, the psychological effects of their actions on their victims, and how the public views them. Unlike male pedophiles, rapists, and sex offenders of that gender; female pedophiles are not as readily identified as male pedophiles. Since female sex criminals do not always conform and fit the stereotypes that are more commonly found in male sex criminals, it is much more difficult for authorities to detain ...


Accessing The Ecosphere: An Indoor Nature-Based Community Expressive Arts Therapy (Exat) Exploration Project, Heather Powers May 2022

Accessing The Ecosphere: An Indoor Nature-Based Community Expressive Arts Therapy (Exat) Exploration Project, Heather Powers

Expressive Therapies Capstone Theses

This capstone thesis posits that when humans connect and maintain a relationship with nature, their mental health improves. Humans have developed from and within Earth’s ecosystem, making our relationship with nature a necessary acknowledgement that the self is more than a corporeal body but is, in fact, embedded within the natural world around us. The current overwhelming dependence on electronic advancements and the development of urban areas have led people to become more distant in their relationship to nature, putting the overall well-being of the planet in jeopardy. This thesis points out that the more separation we feel from ...


Analysis Of Principles Of Development Of Key Technologies, Yungang Bao May 2022

Analysis Of Principles Of Development Of Key Technologies, Yungang Bao

Bulletin of Chinese Academy of Sciences (Chinese Version)

How to development key technologies requires understanding the principles of technology evolution. This study proposes that the development process of key technologies follows the Metcalf's Law. Furthermore, this paper presents two principles of the development of key technologies from different angles. Finally, several suggestions are raised.


Promoting Infrastructure Construction In Advance To Support Sci-Tech Self-Reliance And Self-Strengthening At Higher Level, Yang Wang, Yuanchun Zhou, Yanguang Wang, Jianhui Li, Fazhi Qi, Honglin He, Fangyu Liao May 2022

Promoting Infrastructure Construction In Advance To Support Sci-Tech Self-Reliance And Self-Strengthening At Higher Level, Yang Wang, Yuanchun Zhou, Yanguang Wang, Jianhui Li, Fazhi Qi, Honglin He, Fangyu Liao

Bulletin of Chinese Academy of Sciences (Chinese Version)

The research infrastructure is the basic and strategic platform of scientific and technological innovation. In the last decade, China's research infrastructure has achieved leapfrog development in the level of observation, manufacturing, management, data acquisition, data sharing and utilization, which supports China's scientific and technological innovation activities at a higher level. Looking into the future, the scientific research paradigm is transforming. The network, data, and computing platform will not only support the development of major science and technology infrastructure and field stations in larger, more accurate, and more advanced approach, but also contribute to the transformation of scientific research ...


The Relationship Between Perceived Stress And Disordered Eating In Undergraduate Students During The Covid-19 Pandemic, Caroline G. Martin May 2022

The Relationship Between Perceived Stress And Disordered Eating In Undergraduate Students During The Covid-19 Pandemic, Caroline G. Martin

Gettysburg College Headquarters

The COVID-19 pandemic has affected and imposed challenges on nearly everyone, including college students. Despite their already stressful situations, previous research has demonstrated increased stress levels among college students during the COVID-19 pandemic. Additionally, research has also shown an increase in disordered eating for college students during the pandemic. However, few studies have investigated the relationship between both perceived stress and disordered eating during the COVID-19 pandemic. Therefore, the present study used a correlational design to investigate a potential association between perceived stress and disordered eating among undergraduate college students during the COVID-19 pandemic. By administering the EAT-26, the CSSEC ...


Gettysburg College Headquarters Spring 2022 May 2022

Gettysburg College Headquarters Spring 2022

Gettysburg College Headquarters

The Gettysburg College Headquarters is an open access, peer-reviewed, undergraduate research journal that publishes works from specific fields in the Humanities, Social Sciences, Natural Sciences, and Visual Arts.


To The Moon And Mars And Back To The Archives: Working With Modern Space Collections At The University Of Arizona Libraries, Molly Stothert-Maurer, Lisa E. Duncan May 2022

To The Moon And Mars And Back To The Archives: Working With Modern Space Collections At The University Of Arizona Libraries, Molly Stothert-Maurer, Lisa E. Duncan

Journal of Western Archives

With a long history at the University of Arizona with excellence in the lunar and planetary sciences, the University of Arizona Libraries Special Collections has increased its collecting of the History of Science and Technology. These large, modern space collections pose unique challenges and require specific needs to be addressed in order for the collections to be stored, processed and made available for access. It is essential for archivists working with these collections to ask their donors the right questions and learn the limitations and restrictions that often come with acquiring modern space collections. Archives around the country have started ...


Understanding The Influence Of Perceptual Noise On Visual Flanker Effects Through Bayesian Model Fitting, Jordan Deakin, Dietmar Heinke May 2022

Understanding The Influence Of Perceptual Noise On Visual Flanker Effects Through Bayesian Model Fitting, Jordan Deakin, Dietmar Heinke

MODVIS Workshop

No abstract provided.


Sheltered Math Curriculum For Middle School English Learners, Jasmine Ercink May 2022

Sheltered Math Curriculum For Middle School English Learners, Jasmine Ercink

Dissertations, Theses, and Projects

Language barriers have shown a need for differentiation and sheltered instruction in the classroom for English Learners (ELs) to be successful in the United States public school system. This project proposes a mathematics curriculum using SIOP so that both groups of students in the middle school level can increase their proficiency in the mathematics content area as well as experience opportunities for academic and social language development. The purpose of this report is to describe the processes, methods, data, and intent of the mathematics curriculum for these learners. The curriculum acts as an effective intervention to fill gaps in both ...


Sustainable Rural Development: Is It Possible To Boost Rural Economies While Protecting The Environment?, Jack M. Hempleman May 2022

Sustainable Rural Development: Is It Possible To Boost Rural Economies While Protecting The Environment?, Jack M. Hempleman

Undergraduate Theses, Capstones, and Recitals

Amidst rapid depletion of our carbon budget, the need to change our practices to be more in line with Earth’s limits has become important in every sector of our economy. From advances in renewable energy generation to the growth of urban gardening, people around the world are taking action to change the way they interact with our planet. However, growing concerns have been raised that protections for the environment will disproportionately harm struggling communities. For instance, rural communities in the United States already exhibit disproportionately high poverty rates, income inequality, and unemployment, as well as lower quality healthcare and ...


The Understanding Of Mycorrhizae Networks: A Historical Approach, Jake Sun May 2022

The Understanding Of Mycorrhizae Networks: A Historical Approach, Jake Sun

The Confluence

The growth of mycorrhizal fungi into plant roots used to be viewed as a parasitic relationship between plants and fungi, where the fungal symbiont benefits and the plant host is harmed. Current research elucidates a mutualistic relationship. The mycorrhizae network assists the plants by increasing the capabilities for nutrient absorption in the soil. In exchange, the fungi receive carbon supply from the photosynthetic plants for growth. Our scientific understanding of other topics like species specificity, seed germination, and co-evolutionary influence of mycorrhizae and plants has also progressed. Additionally, we now understand that the mycorrhizal mutualism is not limited to the ...


Jlootbox: An Agent-Based Model Of Social Influence And Gambling In Online Video Games, Lila Zayed May 2022

Jlootbox: An Agent-Based Model Of Social Influence And Gambling In Online Video Games, Lila Zayed

Honors Capstones

Loot boxes are digital treasure chests that players spend real money to purchase, wherein the contents are randomly generated. Since players spend money on the pretense they might receive something valuable, many comparisons have been drawn to gambling behavior as the reward is up to chance. To explore this phenomenon, agent-based modeling will be used to simulate this behavior. Agent-based modeling allows us to create heterogenous agents who follow simple rules so that we may observe emergent behavior in a population. An agent-based model was created using Repast Simphony for this end.

Parameters included the player’s internal decision strategy ...


Feed-In Tariffs And Sustainable Energy: Why Different Oecd Governments Support Sustainable Energy At Different Rates Through Feed-In Tariffs, Joshua M. Grahame May 2022

Feed-In Tariffs And Sustainable Energy: Why Different Oecd Governments Support Sustainable Energy At Different Rates Through Feed-In Tariffs, Joshua M. Grahame

Business and Economics Honors Papers

Why is it that different governments in the OECD support sustainable energy at different rates? In the effort to explain this difference, Feed-in-Tariffs (FITs) will be closely examined to see if it can explain the significant portion of the variation among countries. This project serves as a continuation of previous scholars' works, to better understand the variation between countries in adopting renewable energy, even though all members of the OECD have pledged that by 2030 half of their energy will come from sustainable energy. Whereas previous research considered data ending in 2012 and looked at countries outside of the OECD ...


Impact Of Community Radio On Community Development In The United States, Jillian Hermansky May 2022

Impact Of Community Radio On Community Development In The United States, Jillian Hermansky

Capstone Collection

Community radio is a community-led broadcasting service that serves as a tool for development for communities around the world. This research study explores the development benefits of community radio in the United States using a case study of Federal Communications Commission (FCC)-licensed FM community radio stations to evaluate the role of community radio in communication and information sharing and promoting sustainable social change and development. To fulfill the objectives of the case study, data was collected from 55 community radio stations in the United States using mixed-questionnaire digital surveys and supplementary virtual interviews. Findings indicated that community radio stations ...


Exploring The Spatial Distribution Of Air Pollutants And Covid-19 Death Rate: A Case Study For Los Angeles County, California, Akhil Mandalapu, Junfeng Jiao, Amin Azimian May 2022

Exploring The Spatial Distribution Of Air Pollutants And Covid-19 Death Rate: A Case Study For Los Angeles County, California, Akhil Mandalapu, Junfeng Jiao, Amin Azimian

International Journal of Geospatial and Environmental Research

Objective

Since March 2020, COVID-19 has rapidly spread across the world with over 240 million cases and over 5 million deaths as of November 2021. It has been unclear what role air pollutants may play in exacerbating respiratory illnesses such as COVID-19 due to their interaction with the respiratory system. The association with air pollutants and COVID-19 severity has been explored at the regional and metropolitan area, however it is unclear if such an association is consistent at the neighborhood level.

Methods

Weekly death rates from COVID-19 from March 2020 to November 2021 were compared using one-sided unpaired t-tests across ...


Generational Harmony Saves The World: How The Power Of Generation Theory, Gen Z Youth, And Activism Can Mitigate The Climate Crisis, Ryan Hill May 2022

Generational Harmony Saves The World: How The Power Of Generation Theory, Gen Z Youth, And Activism Can Mitigate The Climate Crisis, Ryan Hill

Undergraduate Scholarship and Creative Works

This paper explores generations as a concept for understanding and explaining the relationship between major sociohistorical events and societal members, posits generation succession as a way in which long-term social change occurs, compares and contrasts the perceptions of the major generations (Baby Boomers, Gen X, Millennials) created by popular media and scholarly research, illuminates characterizations of the youngest and still-emerging Gen Z, discusses what major sociohistorical events during the time of their adolescence have folded Gen Z into a distinct group with a common generational consciousness, outlines how anthropogenic climate change is a real phenomenon with harmful consequences already affecting ...


Justification For An Apparel-Based Sustainability Course At The University Of Arkansas, Sydney Taylor May 2022

Justification For An Apparel-Based Sustainability Course At The University Of Arkansas, Sydney Taylor

Apparel Merchandising and Product Development Undergraduate Honors Theses

The University of Arkansas' Apparel Merchandising and Product Development program does not currently offer a course on sustainability in the apparel and textile sector. Due to a lack of sustainability information, students may not have a thorough understanding of their degree. If students had the opportunity to learn about current sustainability-related topics before entering the workforce, they would have a new perspective and a deeper understanding of the industry, allowing them to potentially make good change.

By elaborating on the need for an apparel-based sustainability course to be offered at the University of Arkansas in the Apparel Merchandising and Product ...


Identifying Associations Between Human-Environmental Factors And Water Quality Trends Observed At Perennial Headwater Streams Of The San Bernardino National Forest, California, Anna Frey May 2022

Identifying Associations Between Human-Environmental Factors And Water Quality Trends Observed At Perennial Headwater Streams Of The San Bernardino National Forest, California, Anna Frey

Electronic Theses, Projects, and Dissertations

Anthropogenic factors related to landscape activities, infrastructure, and alterations, coupled with severe climatic fluctuations (i.e., droughts and extreme hydrological events) are increasingly impairing the quality of surface water resources across multiple geographic scales, warranting the need for comprehensive investigations of the cumulative effects of human-environmental stressors at multiple scales within a watershed. This study assessed three perennial headwater streams of the San Bernardino National Forest, California. The streams were tested for one year from October 2019 to September 2020 for conductivity, dissolved oxygen (DO), pH, turbidity, temperature, ammonium (NH4+), nitrate (NO3-), total coliform (TC), Escherichia coli (E ...


Multi-Criteria Evaluation Model For Classifying Marginal Cropland In Nebraska Using Historical Crop Yield And Biophysical Characteristics, Andrew Laws May 2022

Multi-Criteria Evaluation Model For Classifying Marginal Cropland In Nebraska Using Historical Crop Yield And Biophysical Characteristics, Andrew Laws

Dissertations & Theses in Natural Resources

Marginal cropland is suboptimal due to historically low and variable productivity and limiting biophysical characteristics. To support future agricultural management and policy decisions in Nebraska, U.S.A, it is important to understand where cropland is marginal for its two most economically important crops: corn (Zea mays) and soybean (Glycine max). As corn and soybean are frequently planted in a crop rotation, it is important to consider if there is a relationship with cropland marginality. Based on the current literature, there exists a need for a flexible yet robust methodology for identifying marginal land at different scales, which takes advantage ...


Diffusion Of A Salt In An Aqueous Media, Aldaly Pineda Hernandez May 2022

Diffusion Of A Salt In An Aqueous Media, Aldaly Pineda Hernandez

Chemical Engineering Undergraduate Honors Theses

Diffusion is defined as the net transfer of a molecule from a high concentration region to a low concentration region. The concept of diffusion is used in a very important process called "desalination." Desalination is a separation process used to reduce the salt content dissolved in brackish water to make it suitable for human consumption, irrigation, and industrial use.

In desalination plants, it is important to monitor the constantly changing salt content of water, partly due to the diffusive effect. The main purpose of this experiment was to study the diffusion of NaCl in water at two NaCl concentrations. The ...


Sensory Comparison Of Beer Carbonated Using Forced Carbonation And The Carbo Rock-It, Michala Smith May 2022

Sensory Comparison Of Beer Carbonated Using Forced Carbonation And The Carbo Rock-It, Michala Smith

Biological and Agricultural Engineering Undergraduate Honors Theses

Craft brewing is a growing market which represents over 12% of beer produced in the United States. Dr. G Scott Osborn, PE invented the Carbo Rock-It™ to improve the carbonation process for craft breweries. The invention allows for shorter carbonation time and uses less CO2, saving companies money and time. Because of the lack of gas losses through bubbling, Osborn theorized that the Carbo Rock-It could also prevent the “stripping of the nose” that can occur in traditional forced carbonation. Existing research supports the mechanism, as beer flavor and aroma volatiles have been detected during the release of CO ...


Side-Channel Analysis On Post-Quantum Cryptography Algorithms, Tristen Teague May 2022

Side-Channel Analysis On Post-Quantum Cryptography Algorithms, Tristen Teague

Computer Science and Computer Engineering Undergraduate Honors Theses

The advancements of quantum computers brings us closer to the threat of our current asymmetric cryptography algorithms being broken by Shor's Algorithm. NIST proposed a standardization effort in creating a new class of asymmetric cryptography named Post-Quantum Cryptography (PQC). These new algorithms will be resistant against both classical computers and sufficiently powerful quantum computers. Although the new algorithms seem mathematically secure, they can possibly be broken by a class of attacks known as side-channels attacks (SCA). Side-channel attacks involve exploiting the hardware that the algorithm runs on to figure out secret values that could break the security of the ...


How Flow Regime Affects Predator-Prey Relationships Of Stream Darter And Shiner Species, Anna E. Richardson May 2022

How Flow Regime Affects Predator-Prey Relationships Of Stream Darter And Shiner Species, Anna E. Richardson

Biological Sciences Undergraduate Honors Theses

Analysis of the interactions between abiotic and biotic factors of environments and ecosystems is a highly valued area of research. This study focuses on the interactions between the biotic component of predation and foraging of certain stream fish species and the abiotic component of the flow regime that those species reside in. Gut content analysis followed by statistical calculations in the form of t-tests and chi -quared tests were performed on two fish species who both inhabited a stream with a groundwater flashy flow regime as well as a stream with a runoff flashy flow regime. The research showed that ...


How Blockchain Solutions Enable Better Decision Making Through Blockchain Analytics, Sammy Ter Haar May 2022

How Blockchain Solutions Enable Better Decision Making Through Blockchain Analytics, Sammy Ter Haar

Information Systems Undergraduate Honors Theses

Since the founding of computers, data scientists have been able to engineer devices that increase individuals’ opportunities to communicate with each other. In the 1990s, the internet took over with many people not understanding its utility. Flash forward 30 years, and we cannot live without our connection to the internet. The internet of information is what we called early adopters with individuals posting blogs for others to read, this was known as Web 1.0. As we progress, platforms became social allowing individuals in different areas to communicate and engage with each other, this was known as Web 2.0 ...


Monitoring Sars-Cov-2 Risk With Co2. The Importance Of Ventilation, Masks, And Vaccinations., Preston Betz May 2022

Monitoring Sars-Cov-2 Risk With Co2. The Importance Of Ventilation, Masks, And Vaccinations., Preston Betz

Earth Sciences Theses and Dissertations

To assess airborne pathogen infection risk, concentrations of interior carbon dioxide and changes in relative humidity serve as proxies for human respiration products. Yanes and Yapp, 2010, demonstrated that interior air carbon dioxide concentrations and 13C/12C ratios display a two-component mixing relationship between respiration carbon dioxide which is highly concentrated (>100x atmospheric) in respiration air CO2 at >40,000 ppm compared with ambient air (~410 ppm). In the absence of combustion carbon dioxide, the concentration of carbon dioxide, in an interior space, depends on the rate of respiration CO2 addition relative to the amount of ...


Ongoing Calculus In The Cerebral Cortex, Luke Long May 2022

Ongoing Calculus In The Cerebral Cortex, Luke Long

Physics Undergraduate Honors Theses

Various modes of neuronal computations have long been theorized to be possible based on the structure and geometry of the brain. These computations also seem necessary for many of the integral functions of the brain, like information processing and regulatory processes in the body. However, experimental data directly supporting these claims have been rare.

In this study, data collected in mice from a large number of neurons over a long period of time provided the opportunity to search for some of these computations, specifically change detection and squaring calculations. Using Matlab, the goal of this analysis was to find statistically ...


Monitoring The M-Dwarf Host Stars Of Tess Exoplanet Candidates: Stellar Flares And Habitability, Ashley Lieber May 2022

Monitoring The M-Dwarf Host Stars Of Tess Exoplanet Candidates: Stellar Flares And Habitability, Ashley Lieber

Physics Undergraduate Honors Theses

In the search for life beyond our solar system, the study of M-dwarfs has become increasingly important due to their unique characteristics including their small size, flaring capabilities, and long lifespans. Their small size allows for exoplanet detection due to observable gravitational interactions, and the stellar flares could potentially trigger prebiotic life on exoplanets in the system. Lastly, their long lifespans may provide the conditions necessary to foster prebiotic life and the development of more complex organisms over time. Flare rate is a critical factor in determining the habitability of the exoplanet due to its potential to damage or incubate ...


Interdisciplinary Studies Masters Degree In Anthropological & Science Based Education, Robert Porter May 2022

Interdisciplinary Studies Masters Degree In Anthropological & Science Based Education, Robert Porter

Electronic Theses, Projects, and Dissertations

The goal of this project is to develop anthropological and science-based curricula that will emphasize a place-based approach while actively engaging students in their education. I developed two curricula for elementary aged students in San Bernardino. The first curriculum was based anthropologically on the local history of indigenous groups and early San Bernardino history. The second was based on paleontology here in California with a focus on dinosaurs and fossils.

To improve and validate the curricula I sent the examples to educational experts and had them critique the lessons and information provided. Then I used their input to improve the ...