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Laughs And Giggles Take Center Stage: The Effect Of Humor On Public Speaking Anxiety, Ezeriki Emetonjor
Laughs And Giggles Take Center Stage: The Effect Of Humor On Public Speaking Anxiety, Ezeriki Emetonjor
Perpetua: The UAH Journal of Undergraduate Research
This study sought to explain the connection between self-reported public speaking anxiety level, humor use, and the effect that humor may have on public speaking anxiety levels during student's speeches. Existing studies theorize that humor may improve a speaker's disposition during their speech but are yet to empirically measure stress response. Humor in specific contexts, such as medical fields or business, has been shown to relax the audience, but it can backfire and make the speaker lose credibility. Our method relied on 120 undergraduate students who wore wrist-based, heart rate monitors during their speeches. Instances of humor were derived from …
Analysis Of A Generalized Periodic Model For The Spread Of Wolbachia In A Mosquito Population, Alexandra Fedrigo
Analysis Of A Generalized Periodic Model For The Spread Of Wolbachia In A Mosquito Population, Alexandra Fedrigo
Perpetua: The UAH Journal of Undergraduate Research
Mosquito-borne illnesses have posed an ongoing threat to humans, causing thousands of fatalities each year. Wolbachia bacteria have proven to be an effective way of limiting the ability of mosquitoes to transmit these diseases to humans, as well as to control the population by sterilizing male mosquitoes. For these reasons, researchers have performed field releases of Wolbachia-infected mosquitoes. To increase the likelihood that these releases will succeed, mathematical models have been developed to predict the spread of Wolbachia in mosquito populations following a field release. In a recently published article, a generalized model was proposed, with the intention of being …
Healthy Diet Affordability In North Alabama During Covid-19, Nicholas Knighten
Healthy Diet Affordability In North Alabama During Covid-19, Nicholas Knighten
Perpetua: The UAH Journal of Undergraduate Research
Previous research has shown that nutrient dense, low-calorie foods are bought at higher rates by those with higher incomes. 1 These types of studies have engulfed common knowledge on healthy diet affordability. However, a recent study of the Mechoopda Indian Tribe of Chico, California, found a healthy diet filled with popular foods can be afforded by all members of the community.2 By focusing on healthy foods people want to eat and their localized affordability, research applicability in policy clearly increases. This study uses a framework similar to the California study while tweaking a few aspects to better suit a more …
The Rhetorical Landscape Of Public Memory, Brendan Lang
The Rhetorical Landscape Of Public Memory, Brendan Lang
Perpetua: The UAH Journal of Undergraduate Research
Public memory is a complex concept that concerns the events and individuals that are present or important in the minds and lives of groups of people. Public memory can put certain ideas or narratives on display about these events and people that further influence the public mind. For example, there has recently been much controversy surrounding public sites of history, namely those commemorating the Civil War era Confederacy. This has sparked much debate about the way we commemorate histories and how we choose what histories are commemorated. The aim of this project is to examine and understand not only the …
A Look At How Family Communications Influences Human-Dog Communications, Matthew Poarch
A Look At How Family Communications Influences Human-Dog Communications, Matthew Poarch
Perpetua: The UAH Journal of Undergraduate Research
Throughout the entire world, one nonhuman animal has been owned more than any other animal. 33% of the world's population owns a pet dog. Nearly 70% the United States consumers own a pet, with the pet dog making up 50% of that number (Petfood Industry, 2016). The number of dog-owners is only increasing; therefore, it is imperative that we continue to investigate the human-dog relationship, which is known as interspecies communication. The present study used a survey to investigate how the parent-child relationship influences the human-dog relationship with a keen focus on communication. Participants were selected through a convenience sample …
An Analysis Of The History Of Latin American And Caribbean Regionalism, Paul Mcneely, Zach Cole
An Analysis Of The History Of Latin American And Caribbean Regionalism, Paul Mcneely, Zach Cole
Perpetua: The UAH Journal of Undergraduate Research
The Latin American and Caribbean regionalism movement has produced an abundance of multilateral organizations. For some observers, the multiplicity of regional integration initiatives and the divergence of their ideologies complicates prospects for unification. For others, the diversity of organizations offers a "vote with your feet" alternative, which decreases the prospects for zero-sum interactions between nation-states. This paper covers the history of the Latin American and Caribbean regionalism movement up to its present state in 2020. Economic and political history are used to illuminate how the historical endowments, international relations, and ideologies of the region's nations shape the growing diversity of …
Front Matter
Perpetua: The UAH Journal of Undergraduate Research
No abstract provided.
Perpetua, Spring 2022 Special Issue
Perpetua, Spring 2022 Special Issue
Perpetua: The UAH Journal of Undergraduate Research
No abstract provided.
The Usefulness Of Achilles Tendon Length In Predicting Jump Potential In Male Collegiate Basketball And Track And Field Athletes, Mohamad Alrefai, Richard Claytor, Brianna New
The Usefulness Of Achilles Tendon Length In Predicting Jump Potential In Male Collegiate Basketball And Track And Field Athletes, Mohamad Alrefai, Richard Claytor, Brianna New
Perpetua: The UAH Journal of Undergraduate Research
Tendon mechanical properties and composition allow them to play a role in force production. One such tendon, the Achilles tendon, is the thickest and strongest tendon in the body and has been studied sparsely in regard to resting length and vertical jump performance. PURPOSE: To determine the correlation between Achilles tendon length (ATL) and vertical jump output. METHODS: Twenty-one males (19.33±1.39 years, 78.48±10.31 kg, 183.43±7.33 cm) were recruited from UAH men’s track & field and basketball teams. Participants were scheduled a one-time session consisting of anthropometrics, ATL measurement, and vertical jump assessment. The ATL measurement was performed bilaterally by having …
Analysis Of The Activation Of Upper Extremity Muscles During Various Chest Press Modalities, Jamison Christian, Sydney Gothart, Harrison Graham, Katelyn Barganier
Analysis Of The Activation Of Upper Extremity Muscles During Various Chest Press Modalities, Jamison Christian, Sydney Gothart, Harrison Graham, Katelyn Barganier
Perpetua: The UAH Journal of Undergraduate Research
The path to increasing muscular strength begins with resistance training. Multiple variations of the bench press exist for strengthening the chest and shoulder musculature. All modalities serve an important role in strength training. PURPOSE: Determine the level of muscle activation of the anterior deltoid (AD), medial deltoid (MD), and pectoralis major (PM) during different bench press scenarios. METHODS: Twenty subjects (10 males,10 females; age = 24±2.99 years) with at least one year of resistance training were recruited. Six electromyographical sensors were placed bilaterally on the targeted muscles. Subjects performed a one-repetition maximum (1-RM) of dumbbell (DB) and barbell (BB) press …
Interpreting Pictures: Bridging The Literacy Gap With Graphic Novels, Daniela Cornelius
Interpreting Pictures: Bridging The Literacy Gap With Graphic Novels, Daniela Cornelius
Perpetua: The UAH Journal of Undergraduate Research
Graphic novels have significantly grown in popularity over the past decade, increasing their impact on modern literary culture. In an effort to engage reluctant readers in literacy education, teachers have utilized graphic novels in their classroom as a bridge to higher forms of literature. The rich illustrations, expressive dialogue, and diversity in topic and voice make graphic novels a viable tool for introducing challenging topics into the classroom. Additionally, educators have looked to graphic novels for their apparent approachability to engage reluctant readers. In this sense, the graphic novel is utilized as a scaffolding tool to higher, text-based forms of …
Differences In Player Metrics Between Lacrosse Games And Practices, Kinta Schott
Differences In Player Metrics Between Lacrosse Games And Practices, Kinta Schott
Perpetua: The UAH Journal of Undergraduate Research
This study was intended to better understand the physiological demands of the sport of lacrosse by analyzing and comparing player metrics during game and practice sessions. A team heart rate monitoring system with global positioning was utilized to measure player metrics during games, which were compared with metrics recorded during practice sessions. Participants in the study consisted of 13 male high school club lacrosse players (16.2 ± 1.5 yr; 175.3 ± 7.7 cm; 69.9 ± 13.6 kg). Game and practice data were compared utilizing paired samples t -tests, while individual position metrics were analyzed by independent samples t -tests. A …
Utilizing Nasa Earth Observations To Assess Coastline Replenishment Initiatives And Shoreline Risk Along Delaware's Coasts, Greta Paris, Rachel Tessier, Ani Matevosian, Nicholas Gagliano
Utilizing Nasa Earth Observations To Assess Coastline Replenishment Initiatives And Shoreline Risk Along Delaware's Coasts, Greta Paris, Rachel Tessier, Ani Matevosian, Nicholas Gagliano
Perpetua: The UAH Journal of Undergraduate Research
Delaware’s coastline is a vibrant tourist destination and unique habitat for many vulnerable species. Yet, with the lowest mean elevation of any state, this stretch of land is threatened by geological and climatic forces, including coastal erosion, sea level rise, storm surge, and subsidence. The state’s Department of Natural Resources and Environmental Control (DNREC) has served as a diligent combatant of coastal land loss since the 1950s. In partnership with the DNREC, this team utilized Landsat 8 Operational Land Imager, Landsat 7 Enhanced Thematic Mapper Plus, Landsat 5 Thematic Mapper, and the Terra Advanced Spaceborne Thermal Emission and Reflection Radiometer …
Statistical Comparison Between Various Atmospheric Correction Methods And The Libradtran Package, Christine Evans
Statistical Comparison Between Various Atmospheric Correction Methods And The Libradtran Package, Christine Evans
Perpetua: The UAH Journal of Undergraduate Research
This study investigated the use of LibRadtran to calculate "pixel-size" spectral profiles of the Earth’s surface to understand and improve atmospheric corrections of satellite imagery. LibRadtran is a publicly available library of radiative transfer packages used in studies from a variety of scientific fields to compute radiance values, irradiance values, and actinic fluxes in different spectral regions. While widely used as a package for calculating the transfer of radiation within Earth’s atmosphere, few studies have compared its results to other atmospheric models more prevalent in remote sensing such as QUick Atmospheric Correction and Dark Object Subtraction. Utilizing the uvspec model …
Outlining The Definitional History Of Technical Writing Through Contemporary Scholarly Voices, Joseph Brasher
Outlining The Definitional History Of Technical Writing Through Contemporary Scholarly Voices, Joseph Brasher
Perpetua: The UAH Journal of Undergraduate Research
The history of technical writing is well established, but the history of its definition is not. Technical writing as practiced today is a far narrower category than what was considered technical writing mere decades ago. One cannot easily trace this organic focusing of definition back directly to individual thinkers and scholars. Despite this, individualized historical arguments on technical writing remain useful in demonstrating a pattern of evolving academic thought on the subject. Using selected accounts from conference presentations and scholarly articles published from the 1960s to the 1980s, this paper argues that, over time, technical writing’s definition narrowed from covering …
Alginate Microgels Created By Electrohydrodynamic Jetting, Bruna Mendonca, Kyung-Ho Roh
Alginate Microgels Created By Electrohydrodynamic Jetting, Bruna Mendonca, Kyung-Ho Roh
Perpetua: The UAH Journal of Undergraduate Research
Developing a facile process that can produce small hydrogels of a well-defined shape with diameters in the order of 100 μm is of great interest in the field of biomedical applications including drug delivery, tissue engineering, and cell manufacturing. We attempted to employ electrohydrodynamic (EHD) jetting process to fabricate such microgels made of sodium alginate. To achieve the controlled sizes and shapes of the microgels in a reproducible manner, the solution parameters (sodium alginate concentration, calcium chloride concentration) as well as operational parameters of EHD jetting (flow rate, voltage, distance between the jetting nozzle to the substrate) have been studied …
The Effects Of Sea Level Rise On Health And Displacement In The Pacific Northwest, Rachel Suhs
The Effects Of Sea Level Rise On Health And Displacement In The Pacific Northwest, Rachel Suhs
Perpetua: The UAH Journal of Undergraduate Research
Coastal Washington and Oregon are vulnerable to future inundation due to sea level rise. Inundation would most likely lead to people displaced from their homes and lead to health issues of both mental and physical natures. Using ArcMap, areas most likely to be inundated were identified and the number of people that may be displaced were estimated for 1, 2, and 5 ft of sea level rise scenarios. The amount of Native Americans who live on federally recognized reservations and entities that may be displaced was also estimated. It was found that many of the inundated areas, particularly those within …
Outlining The Definitional History Of Technical Writing Through Contemporary Scholarly Voices, Joseph Brasher
Outlining The Definitional History Of Technical Writing Through Contemporary Scholarly Voices, Joseph Brasher
Perpetua: The UAH Journal of Undergraduate Research
The history of technical writing is well established, but the history of its definition is not. Technical writing as practiced today is a far narrower category than what was considered technical writing mere decades ago. One cannot easily trace this organic focusing of definition back directly to individual thinkers and scholars. Despite this, individualized historical arguments on technical writing remain useful in demonstrating a pattern of evolving academic thought on the subject. Using selected accounts from conference presentations and scholarly articles published from the 1960s to the 1980s, this paper argues that, over time, technical writing’s definition narrowed from covering …
Alginate Microgels Created By Electrohydrodynamic Jetting, Bruna Mendonca, Kyung-Ho Roh
Alginate Microgels Created By Electrohydrodynamic Jetting, Bruna Mendonca, Kyung-Ho Roh
Perpetua: The UAH Journal of Undergraduate Research
Developing a facile process that can produce small hydrogels of a well-defined shape with diameters in the order of 100 μm is of great interest in the field of biomedical applications including drug delivery, tissue engineering, and cell manufacturing. We attempted to employ electrohydrodynamic (EHD) jetting process to fabricate such microgels made of sodium alginate. To achieve the controlled sizes and shapes of the microgels in a reproducible manner, the solution parameters (sodium alginate concentration, calcium chloride concentration) as well as operational parameters of EHD jetting (flow rate, voltage, distance between the jetting nozzle to the substrate) have been studied …
The Effects Of Sea Level Rise On Health And Displacement In The Pacific Northwest, Rachel Suhs
The Effects Of Sea Level Rise On Health And Displacement In The Pacific Northwest, Rachel Suhs
Perpetua: The UAH Journal of Undergraduate Research
Coastal Washington and Oregon are vulnerable to future inundation due to sea level rise. Inundation would most likely lead to people displaced from their homes and lead to health issues of both mental and physical natures. Using ArcMap, areas most likely to be inundated were identified and the number of people that may be displaced were estimated for 1, 2, and 5 ft of sea level rise scenarios. The amount of Native Americans who live on federally recognized reservations and entities that may be displaced was also estimated. It was found that many of the inundated areas, particularly those within …
Front Matter
Perpetua: The UAH Journal of Undergraduate Research
No abstract provided.
Perpetua, Volume 5, Issue 1, Fall 2020
Perpetua, Volume 5, Issue 1, Fall 2020
Perpetua: The UAH Journal of Undergraduate Research
No abstract provided.
Front Matter
Perpetua: The UAH Journal of Undergraduate Research
No abstract provided.
Perpetua, Volume 4, Issue 2, Spring 2020
Perpetua, Volume 4, Issue 2, Spring 2020
Perpetua: The UAH Journal of Undergraduate Research
No abstract provided.
Sport Performance Measures In Youth Wheelchair Basketball Athletes, Ally Bosheers, Jessica Light
Sport Performance Measures In Youth Wheelchair Basketball Athletes, Ally Bosheers, Jessica Light
Perpetua: The UAH Journal of Undergraduate Research
Wheelchair basketball is an adapted sport in which individuals of all ages participate. Sport specific measures are important for training and to compare sport performances between players of various levels. Baseline values have been established for elite players, but they have not been established for amateur athletes. PURPOSE: To determine baseline measures in sport performance for youth wheelchair basketball athletes. METHODS: Four males and one female (age = 15 ± 1 year) were recruited from a local high school wheelchair basketball team. Body composition (3-site skinfold) and anthropometric measures (body mass, wingspan, and shoulder width) were evaluated, along with performance …
Thermococcus Thioreducens' Inorganic Pyrophosphatase Purification, Christopher Nozum, Zeina Sleiman
Thermococcus Thioreducens' Inorganic Pyrophosphatase Purification, Christopher Nozum, Zeina Sleiman
Perpetua: The UAH Journal of Undergraduate Research
Protein purification requires an intensive multi-step process that is customized to every protein’s characteristic for optimal results. In this study, we looked at the purification process of Inorganic Pyrophosphatase (IPPase), an essential protein found in all living organisms. The commonality of the protein does not veil the fact that the mechanism by which IPPase is hydrolyzed into two orthophosphates is not fully understood. To comprehend the mechanism, recombinant mutants of the conservative region in IPPase were expressed. However, to observe a possible change in structure of the recombinant mutants with crystallization, pure concentrated protein is needed. Therefore, protein purification is …
Effects Of Homogenization Heat Treatment On The Microstructure And Mechanical Properties Of Blown Powder Deposition Inconel 625 Specimens, An Nguyen, Judy Schneider
Effects Of Homogenization Heat Treatment On The Microstructure And Mechanical Properties Of Blown Powder Deposition Inconel 625 Specimens, An Nguyen, Judy Schneider
Perpetua: The UAH Journal of Undergraduate Research
Additive manufacturing (AM) is a relatively new process for directly building metallic components in a layer-by-layer manner. This can reduce fabrication costs in alloys that are difficult to subtractively machine, especially for low volume, complex components. Due to the rapid solidification nature of the process, elemental segregation is a concern as it can detrimentally affect the resulting mechanical properties. Thus, post-processing homogenization heat treatments are applied to ensure effectiveness of the alloying system and obtain isotropic properties. Standards to guide post-processing of AM materials are still under development; thus, more information is needed on how the variability among vendors affects …
Evaluation Of Varying Surface Finishes On Thin-Walled Blown Powder Deposition Inconel 625, Noah Naden, Giancarlo Puerto, Judy Schneider
Evaluation Of Varying Surface Finishes On Thin-Walled Blown Powder Deposition Inconel 625, Noah Naden, Giancarlo Puerto, Judy Schneider
Perpetua: The UAH Journal of Undergraduate Research
Incorporation of additive manufacturing (AM) as another fabrication tool requires an understanding of the differences in material behavior from traditionally produced materials using casting, powder metallurgical or wrought processing. Since as-built AM parts typically have a rougher surface finish compared to parts subjected to traditional subtractive machining, post-processing methods to obtain a finer surface finish must be developed. This study evaluated the effect of various surface-finishing methods on additively manufactured Inconel 625. Blown powder deposition (BPD) was used to additively build a nominally 1 mm thick plate. After the build, specimens were subjected to: Chemically Accelerated Vibratory Finishing (CAVF), Chemical …
A Novel Model To Identify Factors Associated With Mobility Apprehension, Maggi R. Welch
A Novel Model To Identify Factors Associated With Mobility Apprehension, Maggi R. Welch
Perpetua: The UAH Journal of Undergraduate Research
The prevalence of limb loss in the United States is estimated at 1.9 million instances with approximately 185,000 amputations occurring annually. Studies report that after lower-limb amputation, patients have high levels of pain, leading to restrictions in functional activity, and are at risk for developing avoidance behaviors. Potential contributing factors include muscle weakness leading to balance and gait abnormalities, which perpetuates low mobility and mobility apprehension. The aim of the study was to determine factors associated with mobility apprehension in individuals who underwent surgery for a lower-limb amputation. Adult participants who had a well-fitting prosthesis and had the ability to …
Front Matter
Perpetua: The UAH Journal of Undergraduate Research
No abstract provided.