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Modelling The Influence Of Crop Density And Weather Conditions On Field Drying Characteristics Of Switchgrass And Maize Stover Using Random Forest, Amit Khanchi, Stuart J. Birrell, Robert B. Mitchell 2018 Iowa State University

Modelling The Influence Of Crop Density And Weather Conditions On Field Drying Characteristics Of Switchgrass And Maize Stover Using Random Forest, Amit Khanchi, Stuart J. Birrell, Robert B. Mitchell

Agricultural and Biosystems Engineering Publications

Field drying trials were conducted using both field baskets as well as grab sampling techniques to study drying behaviour of switchgrass and maize (corn) stover (CS). Environmental conditions such as hourly solar radiation, vapour pressure deficit (VPD), average wind speed, rainfall amount, harvesting method, and field operations such as swath density were used as variables for model development. A powerful classification-based algorithm, which uses a collection of decision trees called random forest (RF) was utilised to predict moisture content (MC) of switchgrass and CS on wet basis. RF predicted the MC of switchgrass and CS with a coefficient of determination ...


Vector Partitions, Jennifer French 2018 East Tennessee State University

Vector Partitions, Jennifer French

Electronic Theses and Dissertations

Integer partitions have been studied by many mathematicians over hundreds of years. Many identities exist between integer partitions, such as Euler’s discovery that every number has the same amount of partitions into distinct parts as into odd parts. These identities can be proven using methods such as conjugation or generating functions. Over the years, mathematicians have worked to expand partition identities to vectors. In 1963, M. S. Cheema proved that every vector has the same number of partitions into distinct vectors as into vectors with at least one component odd. This parallels Euler’s result for integer partitions. The ...


Investigating The Climatology Of Mesospheric And Thermospheric Gravity Waves At High Northern Latitudes, Michael Negale 2018 Utah State University

Investigating The Climatology Of Mesospheric And Thermospheric Gravity Waves At High Northern Latitudes, Michael Negale

All Graduate Theses and Dissertations

An important property of the Earth's atmosphere is its ability to support wave motions, and indeed, waves exist throughout the Earth's atmosphere at all times and all locations. What is the importance of these waves? Imagine standing on the beach as water waves come crashing into you. In this case, the waves transport energy and momentum to you, knocking you off balance. Similarly, waves in the atmosphere crash, known as breaking, but what do they crash into? They crash into the atmosphere knocking the atmosphere off balance in terms of the winds and temperatures. Although the Earth's ...


Investigation Of Alternatives For Migrating The One-Stop-Shop (Oss) Application To A Single, Web-Based Offering That Is Conducive For Both Desktop And Mobile Use., Sahiti Katragadda 2018 Utah State University

Investigation Of Alternatives For Migrating The One-Stop-Shop (Oss) Application To A Single, Web-Based Offering That Is Conducive For Both Desktop And Mobile Use., Sahiti Katragadda

All Graduate Plan B and other Reports

The One-Stop-Shop (OSS) application provides real-time data which is helpful for travelers in the Western United States in planning their travel. Included is traditional information (routing, imagery, weather), as well as points of interest and other route-specific information (elevations, rest areas, etc.). The system displays real-time data streams in a web-based application and in a separate mobile web application, which are presented to end users in a user-friendly format.

OSS web application and OSS mobile web application features have been examined and the best design features for the mobile application have been identified. Along with that, additional design features are ...


A Study Of Topological Invariants In The Braid Group B2, Andrew Sweeney 2018 East Tennessee State University

A Study Of Topological Invariants In The Braid Group B2, Andrew Sweeney

Electronic Theses and Dissertations

The Jones polynomial is a special topological invariant in the field of Knot Theory. Created by Vaughn Jones, in the year 1984, it is used to study when links in space are topologically different and when they are topologically equivalent. This thesis discusses the Jones polynomial in depth as well as determines a general form for the closure of any braid in the braid group B2 where the closure is a knot. This derivation is facilitated by the help of the Temperley-Lieb algebra as well as with tools from the field of Abstract Algebra. In general, the Artin braid group ...


A Comparative Study Of The Role Of Values In Reasoning About Socio-Hydrological Issues In Undergraduate Students From Developed And Developing Countries, Destini Petitt 2018 University of Nebraska - Lincoln

A Comparative Study Of The Role Of Values In Reasoning About Socio-Hydrological Issues In Undergraduate Students From Developed And Developing Countries, Destini Petitt

Dissertations & Theses in Natural Resources

In a world that is becoming increasingly connected and exploited, it is essential to understand how students’ values influence socio-scientific reasoning, particularly when dealing with complex, multifaceted, ever-connected water-related issues. This research strives to better understand stakeholder reasoning to provide teachers and decision-makers with ways to implement those stakeholders’ ideals into choices about complex socio-hydrological issues. Moreover, with 96% of research behavioral research being conducted on peoples from developed countries – who only represent 17% of the world’s population – this study strives to understand how peoples from developing countries – who represent 83% of the world’s population – reason. For this ...


Investigating Mechanisms Of Hydraulic Conductivity Transience In Sandy Streambeds, Wilhelm Fraundorfer 2018 University of Nebraska - Lincoln

Investigating Mechanisms Of Hydraulic Conductivity Transience In Sandy Streambeds, Wilhelm Fraundorfer

Dissertations & Theses in Natural Resources

Streambed hydraulic conductivity (K) is known to be spatially and temporally heterogeneous, but few attempts to understand the controls on temporal variability have been made. This study documents temporal K transience and demonstrates how hydraulic, geophysical, and sedimentological methods can be combined to understand the processes that give rise to changes in streambed K. Falling head permeameter tests and slug tests were conducted to determine vertical K (Kv) and K (slug test K), respectively. These tests were repeated three times over a twelve-week period on the same grid at a depth of 0.5 meters below the bed of ...


Homogenization In Perforated Domains And With Soft Inclusions, Brandon C. Russell 2018 University of Kentucky

Homogenization In Perforated Domains And With Soft Inclusions, Brandon C. Russell

Brandon Russell

In this dissertation, we first provide a short introduction to qualitative homogenization of elliptic equations and systems. We collect relevant and known results regarding elliptic equations and systems with rapidly oscillating, periodic coefficients, which is the classical setting in homogenization of elliptic equations and systems. We extend several classical results to the so-called case of perforated domains and consider materials reinforced with soft inclusions. We establish quantitative H^1-convergence rates in both settings, and as a result deduce large-scale Lipschitz estimates and Liouville-type estimates for solutions to elliptic systems with rapidly oscillating, periodic, bounded, and measurable coefficients. Finally, we connect ...


The Urban Black Male: Early Indicators Of Algebra 1 Failure, Roy Harris 2018 Olivet Nazarene University

The Urban Black Male: Early Indicators Of Algebra 1 Failure, Roy Harris

Scholar Week 2016 - present

The meager mathematical performance of the Black male student has been a well-documented event that was well over 30 years in the making. The purpose of this study was to contribute to the literature on 9th grade urban Black male algebra performance and to identify the existence of any early predictors of high school algebra 1 failure. Specifically, the study sought to identify any difference in the preferred learning styles, mathematics self-efficacy scores, and standardized test scores, among urban Black males 14-16 years who passed high school algebra 1 1st semester of the 2016-2017 school year and urban ...


Buzzwords, Evan D. Poff 2018 Brigham Young University

Buzzwords, Evan D. Poff

Marriott Student Review

This feature will explain the following buzzwords:

  • Blockchain
  • Cryptocurrency
  • Work-Life Integration
  • Passive Equities
  • Risk-Adjusted Returns


Effect Of An Arginine-To-Isoleucine Active Site Mutation On Escherichia Coli Malate Dehydrogenase Enzymatic Activity, Jon Zatorski, Bruce J. Heyen 2018 Olivet Nazarene University

Effect Of An Arginine-To-Isoleucine Active Site Mutation On Escherichia Coli Malate Dehydrogenase Enzymatic Activity, Jon Zatorski, Bruce J. Heyen

Scholar Week 2016 - present

Citric acid cycle enzymes function in an environment with numerous substrate analogues and therefore contain active site residue organizations that confer high substrate specificity. Extensive research into the catalytic mechanism of Escherichia coli malate dehydrogenase (eMDH) has identified arginine81 as being crucial to catalysis. In this investigation, an engineered eMDH having an Ile81 rather than an Arg81 (R81I) was isolated using a hexahistadine (His6) tag. Enzymatic activity of the R81I mutant with respect to malate, lactate, and pyruvate was explored. The R81I mutant did show significant activity toward malate, but did not show significant activity toward lactate or pyruvate. Investigations ...


Design And Evaluation Of 3d-Printed Filar Micrometer, Emily Rull 2018 Olivet Nazarene University

Design And Evaluation Of 3d-Printed Filar Micrometer, Emily Rull

Scholar Week 2016 - present

This project sought to design and 3D-print a filar micrometer for double star measurements that amateur astronomers could produce cost effectively.

Double stars are celestial objects that allow the mass of stars to be calculated by assessing their orbits. Stellar mass affects every current model of stellar evolution, but the most accurate double star orbits can take decades to record. As a result of the long-term nature of such observations and lack of groundbreaking research in double star studies, professional astronomers are no longer focused on making these measurements. This allows amateur astronomers to pick up where professionals have left ...


Swosu Research And Scholarly Activity Fair 2018, Lisa Appeddu, CJ Smith 2018 Southwestern Oklahoma State University

Swosu Research And Scholarly Activity Fair 2018, Lisa Appeddu, Cj Smith

SWOSU Research and Scholarly Activity Fair Programs

On behalf of the members of the Southwestern Oklahoma State University (SWOSU) University Research and Scholarly Activity Committee (USRAC) - Welcome to the Twenty-Fifth SWOSU Research and Scholarly Activity Fair! There are 130 poster presentations and 10 oral presentations involving 293 student researchers, writers, presenters, artists, collaborators, and faculty sponsors encompassing activities from the SWOSU College of Pharmacy; SWOSU School of Nursing & Allied Health Sciences; and SWOSU Departments of Art, Communication, & Theatre; Biological Sciences; Business & Computer Science; Chemistry and Physics; Education; Engineering Technology; Language & Literature; Music; Psychology; and Social Sciences. This also includes guest presenters from the Biomedical Academy at the Western Technology Center, El Reno Public Schools ...


The Impact Of Land Use On Nitrate-N Movement And Storage In The Vadose Zone Of The Hastings’ Whpa, Craig Adams 2018 University of Nebraska - Lincoln

The Impact Of Land Use On Nitrate-N Movement And Storage In The Vadose Zone Of The Hastings’ Whpa, Craig Adams

Dissertations & Theses in Natural Resources

Nebraska has one of the largest agricultural economies in the United States and relies heavily on irrigation and fertilizer application to maintain crop yields. Over-irrigation and continuous application of nitrogen (N) in many areas has led to accumulation of nitrate-N in soils and sediments throughout the state’s vadose zone. Because nitrate-N is both persistent and mobile, groundwater concentrations in many areas of Nebraska and other agriculturally intensive states are increasing. Nitrate-N contamination of public and private drinking water supplies that utilize groundwater are of particular concern. Vadose zone sampling is an important method for rapidly assessing the effect of ...


Robotic Motion Learning Framework To Promote Social Engagement, Rachel Burns, Myounghoon Jeon, Chung Hyuk Park 2018 George Washington University

Robotic Motion Learning Framework To Promote Social Engagement, Rachel Burns, Myounghoon Jeon, Chung Hyuk Park

Philart Jeon

Abstract Imitation is a powerful component of communication between people, and it poses an important implication in improving the quality of interaction in the field of human–robot interaction (HRI). This paper discusses a novel framework designed to improve human–robot interaction through robotic imitation of a participant’s gestures. In our experiment, a humanoid robotic agent socializes with and plays games with a participant. For the experimental group, the robot additionally imitates one of the participant’s novel gestures during a play session. We hypothesize that the robot’s use of imitation will increase the participant’s openness towards ...


Anger Effects On Driver Situation Awareness And Driving Performance, Myounghoon Jeon, Bruce N. Walker, Thomas M. Gable 2018 Michigan Technological University

Anger Effects On Driver Situation Awareness And Driving Performance, Myounghoon Jeon, Bruce N. Walker, Thomas M. Gable

Philart Jeon

Research has suggested that emotional states have critical effects on various cognitive processes, which are important components of situation awareness (Endsley, 1995b). Evidence from driving studies has also emphasized the importance of driver situation awareness for performance and safety. However, to date, little research has investigated the relationship between emotional effects and driver situation awareness. In our experiment, 30 undergraduates drove in a simulator after induction of either anger or neutral affect. Results showed that an induced angry state can degrade driver situation awareness as well as driving performance as compared to a neutral state. However, the angry state did ...


Saving Olivet Money With Creation Care, Nicholas Boros 2018 Olivet Nazarene University

Saving Olivet Money With Creation Care, Nicholas Boros

Scholar Week 2016 - present

Universities throughout the United States are searching for ways to reduce overhead costs, to help combat rises in tuition costs. Typically, one would think that installing solar panels on campus to help generate electricity would cost Olivet money, especially since the University is located in the Midwest. While such an undertaking would require an upfront investment, we will discuss how solar panels could save the University as much as $500,000 to $800,000 per year after an approximate 10 year break even point. We will also briefly discuss how similar approaches could be applied to other businesses and homes ...


On Passing The Buck, Adam J. Hammett, Anna Joy Yang 2018 Cedarville University

On Passing The Buck, Adam J. Hammett, Anna Joy Yang

Adam J. Hammett, Ph.D.

Imagine there are n>1 people seated around a table, and person S starts with a fair coin they will flip to decide whom to hand the coin next -- if "heads" they pass right, and if "tails" they pass left. This process continues until all people at the table have "touched" the coin. Curiously, it turns out that all people seated at the table other than S have the same probability 1/(n-1) of being last to touch the coin. In fact, Lovasz and Winkler ("A note on the last new vertex visited by a random walk," J. Graph Theory ...


Volume 4, Full Contents, 2018 Butler University

Volume 4, Full Contents

Butler Journal of Undergraduate Research

No abstract provided.


Using Random Forests To Describe Equity In Higher Education: A Critical Quantitative Analysis Of Utah’S Postsecondary Pipelines, Tyler McDaniel 2018 University of Utah

Using Random Forests To Describe Equity In Higher Education: A Critical Quantitative Analysis Of Utah’S Postsecondary Pipelines, Tyler Mcdaniel

Butler Journal of Undergraduate Research

The following work examines the Random Forest (RF) algorithm as a tool for predicting student outcomes and interrogating the equity of postsecondary education pipelines. The RF model, created using longitudinal data of 41,303 students from Utah's 2008 high school graduation cohort, is compared to logistic and linear models, which are commonly used to predict college access and success. Substantially, this work finds High School GPA to be the best predictor of postsecondary GPA, whereas commonly used ACT and AP test scores are not nearly as important. Each model identified several demographic disparities in higher education access, most significantly ...


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