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2022

Minnesota State University, Mankato

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Articles 1 - 12 of 12

Full-Text Articles in Physical Sciences and Mathematics

Rural America Is Still Technologically Behind: Why It Matters Now More Than Ever, Paul Force-Emery Mackie Nov 2022

Rural America Is Still Technologically Behind: Why It Matters Now More Than Ever, Paul Force-Emery Mackie

Social Work Department Publications

No abstract provided.

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Changing Climates And Extreme Weather For Minnesota, Patrick A. Tebbe Nov 2022

Changing Climates And Extreme Weather For Minnesota, Patrick A. Tebbe

Mechanical and Civil Engineering Department Publications

Climate change is impacting the design, prediction, and operation of HVAC systems for the built environment, and will continue to do so for the foreseeable future. This presentation reviews climate predictions for the upper Midwest and how they will affect the HVAC industry. Topics such as changing design conditions, extreme weather impact, and increased electrification will be addressed.

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Understanding Learners' Motivation Through Machine Learning Analysis On Reflection Writing, Elizabeth Pluskwik, Yuezhou Wang, Lauren Singelmann Aug 2022

Understanding Learners' Motivation Through Machine Learning Analysis On Reflection Writing, Elizabeth Pluskwik, Yuezhou Wang, Lauren Singelmann

Integrated Engineering Department Publications

Educational data mining (EDM) is an emerging interdisciplinary field that utilizes a machine learning (ML) algorithm to collect and analyze educational data, aiming to better predict students' performance and retention. In this WIP paper, we report our methodology and preliminary results from utilizing a ML program to assess students’ motivation through their upper-division years in the XYZ project-based learning (PBL) program. ML, or more specifically, the clustering algorithm, opens the door to processing large amounts of student-written artifacts, such as reflection journals, project reports, and written assignments, and then identifies keywords that signal their levels of motivation (i.e., extrinsic vs. …

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Broadband Internet Access: Equal Access And Opportunity For All, Erin Kotten, Emily Louks, Matt Frank, Marissa Mammenga Mar 2022

Broadband Internet Access: Equal Access And Opportunity For All, Erin Kotten, Emily Louks, Matt Frank, Marissa Mammenga

Master of Social Work Student Policy Advocacy Briefs

The internet has become the primary way households gain access to daily services, including education, healthcare, employment resources, and transportation. In 2016, the United Nations General Assembly designated internet access a basic human right. Millions of Americans are living in the digital divide. Low-wage workers, people of color, children, older adults, individuals with disabilities, the less educated, rural residents, and limited English-speaking households are among those most affected by lack of broadband access in Minnesota. Those without access experience social and economic inequalities. The COVID-19 pandemic heightened the need for broadband access. Minnesota must end the digital divide that limits …

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The “Office Of The Ciso”: A Framework For Chief Information Security Officers, Yael Nagler, Christophe Veltsos Jan 2022

The “Office Of The Ciso”: A Framework For Chief Information Security Officers, Yael Nagler, Christophe Veltsos

Computer Information Science Department Publications

As we enter 2022, cybersecurity continues to challenge corporations and their CISOs. The sophistication of cyberthreats coupled with an evolving digital landscape has resulted in increased complexity and expanded responsibilities for the CISO. Simply put, there is greater scrutiny, greater regulation, greater complexity, and greater scope than ever before. To respond to these changes, CISOs must organize their “Office of the CISO” to meet the expectations and deliver for their organizations. Whether the CISO has a staff of three or thirty and whether they are prepared or not, these elements are being increasingly expected of CISOs. You can think of …

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Supervised Machine Learning Techniques Applied To Low-Cost Air Quality Sensor Suites, Peter Wahman Jan 2022

Supervised Machine Learning Techniques Applied To Low-Cost Air Quality Sensor Suites, Peter Wahman

All Undergraduate Theses and Capstone Projects

Low-cost PM sensors have garnered interest for their ability to reduce the cost of investigating PM concentrations in both indoor and outdoor spaces. They perform well in high concentration lab testing with correlation coefficients greater than 0.9. In real-world applications, the correlation coefficients drop significantly because of sensing floors and adverse ambient conditions. There are plenty of supervised machine learning techniques that aim to correct the measurements ranging from linear regression to more advanced neural networks and random forests. This work aims to use those more complicated techniques to adjust the measurements using other data sets gathered by a sensor …

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Rankings Of Mma Fighters, Michael Schaefer Jan 2022

Rankings Of Mma Fighters, Michael Schaefer

All Graduate Theses, Dissertations, and Other Capstone Projects

Ranking is an essential process that allows sporting authorities to determine the relative performance of athletes. While ranking is straightforward in some sports, it is more complicated in MMA (mixed martial arts), where competition is often fragmented. This paper describes the mathematics behind four existing ranking algorithms: Elo’s System, Massey’s Method, Colley’s Method, and Google’s PageRank, and shows how to adapt them to rank MMA fighters in the UFC (Ultimate Fighting Championship). We also provide a performance analysis for each ranking method.

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Reconstructing Regional Paleoenvironments And Geomorphic History Of High Plains Playa-Lunette Systems, Alyssa E. Sims Jan 2022

Reconstructing Regional Paleoenvironments And Geomorphic History Of High Plains Playa-Lunette Systems, Alyssa E. Sims

All Graduate Theses, Dissertations, and Other Capstone Projects

Playas are ephemeral upland-embedded wetlands found in semiarid and arid regions worldwide. Lunettes are isolated dunes that form along the downwind margin of playas. The paleoclimatic and geomorphic history of High Plains playa-lunette systems (PLSs) are poorly understood. To address this, we characterize the stratigraphy of four PLSs in southwest Kansas, USA. Methods include: 1) collect soil-sediment cores from playa centers and windward slopes of lunettes; 2) describe cores using USDA techniques; 3) estimate age of stratigraphic units using radiocarbon (14C); and 4) reconstruct paleoenvironmental conditions using stable carbon isotopes (13C) and particle size analysis. Playa stratigraphy is relatively simple …

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Implementation And Usage Of Low-Cost Turbines For Power Generation In Water Networks, Luis Javier Ortiz Osornio Jan 2022

Implementation And Usage Of Low-Cost Turbines For Power Generation In Water Networks, Luis Javier Ortiz Osornio

All Graduate Theses, Dissertations, and Other Capstone Projects

The following APP is part of an investigation and development, carried out to design, and implement a hydroelectric turbine of horizontal axis, in order to generate electrical energy in rural areas, utilizing existing infrastructure or natural waterways such as irrigation canals, piping, rivers and streams. Every industrialized country, as well as, most of the developing nations, have a stake in agriculture and thus access to the infrastructure required for irrigation purposes. Artificial irrigation canals offer advantages such as a clean continuous flow, with the possibility of flow regulation: this together with their vast availability as agricultural infrastructure constitute the main …

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Mapping Log Pd/Cu Ratios In Vulcan And Investigation Into The Origin Of The Magenta Zone In The Northmet Deposit: Hoyt Lakes Minnesota, Usa, Paige M. C. M. Bauer Jan 2022

Mapping Log Pd/Cu Ratios In Vulcan And Investigation Into The Origin Of The Magenta Zone In The Northmet Deposit: Hoyt Lakes Minnesota, Usa, Paige M. C. M. Bauer

All Graduate Theses, Dissertations, and Other Capstone Projects

The purpose of this research is to investigate the origin of the PGE-rich Magenta Zone, a geologic feature within the NorthMet Deposit; a Cu-Ni-PGE deposit within a layered intrusion at the base of the 1.1 Ga Duluth Complex. The hypothesis is that a late-stage silicate magma containing dispersed sulfide droplets had infiltrated a permeable crystal mush resulting in the emplacement of the Magenta Zone. While mineralization is typically found along the base of the Duluth Complex, the Magenta Zone lies ~200 m above typical mineralization. Previous research has shown that the Magenta Zone cross cuts the younger concordant units. To …

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Verification Of Electron Beam Production For Radiation Dosimetry Experimentation, Henri J. Lemieux Jan 2022

Verification Of Electron Beam Production For Radiation Dosimetry Experimentation, Henri J. Lemieux

All Graduate Theses, Dissertations, and Other Capstone Projects

Radiation is a natural phenomenon in which energy is emitted in the form of waves or particles through a given medium. Radiation dosimetry is the method of analyzing and assessing this deposited emitted energy. How this emitted energy effects a given object when deposited has been a topic of interest in the fields of science and medicine. In this paper, a novel method is proposed for the verification of electrons in air and determining their delivered dose rate. Using a linear accelerator which had its polarity flipped from producing positive ions to producing electrons, work to verify the production of …

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Feasibility Study On Emission Line Spectroscopy Between 350 Nm And 750 Nm Of Runaway Star Bow Shocks In The Milky Way Using Currently Operating Observatories With Open Submission Policies, John Scheele Jan 2022

Feasibility Study On Emission Line Spectroscopy Between 350 Nm And 750 Nm Of Runaway Star Bow Shocks In The Milky Way Using Currently Operating Observatories With Open Submission Policies, John Scheele

All Graduate Theses, Dissertations, and Other Capstone Projects

Numerous runaway stars with bow shocks have been observed distributed around the Galaxy. These shocks have previously been observed in the infrared,Hα, [O I I I], and[N I I] lines. Recently hydrodynamic simulations allow for theoretical emissions of a runway star bow shock to be calculated. Expanding on these simulations shows that simultaneous observations in visible spectrum for Hα, H I eλ5876Å, and [O I I I] by the GMOS instruments of the Gemini Observatories are possible, allowing direct composition measurements of the ISM in the Milky Way Galaxy.

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