Social and Behavioral Sciences Commons^™

Impact Or Impasse: How To Measure University Student Effect On Community Organizations, Joel Mcreynolds

University Research Symposium

This applied research project examines the impact that student engagement has on the goals of a university’s community partners. A pilot study conducted in 2019 draws upon questionnaire and interview data gathered from administrators of seven community organizations that are longtime partners with Illinois State University. Key findings that emerge from descriptive statistics and thematic analysis of the data suggest that the positive impact students have on community organizations far outweighs any challenges the organizations may experience. The project concludes with recommendations on how to enhance the research tool for future evaluations and how to further improve the beneficial impacts …

Load Flow Analysis Of 138/69kv Substation Using Electrical Transient & Analysis Program (Etap), Vanessa Abadia Gomez

Electrical Engineering Undergraduate Honors Theses

This paper examines the load flow analysis of a high-voltage substation using ETAP, and explores options for improving the voltage profile of the system. This study yields critical information about the system, such as the voltage drop at each feeder, the voltage at each bus, as well as real and reactive power losses at the different branches and feeders. In this power flow examination, the system’s performance is evaluated for different operating conditions, so that control measurements can be applied if necessary. The experimental results are used for proposing a plan of using fixed and switched shunt capacitor banks to …

The Wrongful Conviction Program: A Program Evaluation, Ashley M. Chlebek

Masters Theses

The Western Michigan University Wrongful Conviction Program (WCP) operated under a grant awarded by the Department of Justice (DOJ) from 2015 through 2018. The WCP partnered with the Western Michigan University Cooley Law School’s Innocence Project (WMU-CIP) to assist in the screening, review, and investigation of claims of innocence. The WCP trained undergraduate students to conduct case investigations and supported WMU-CIP in several ways.

The evaluation presented here examines the activities of the WCP to understand the ways in which it achieved its intended goals, as well as the ways in which it impacts participating students and the innocence movement. …

Mammal Species Inventory Using Various Trapping Methods In Zone 4 Of Billy Barquedier National Park, Belize During Rainy Season, Mersady Redding

Animal Science Undergraduate Honors Theses

Belize is a small country, but it is extremely ecologically diverse. Based on the few studies conducted in Belize, the abundance of mammals is low but diversity is high. Particular findings note the number and identity of species differed between four sites in the Maya Mountains of Belize, indicating that a data set from a single site is not representative of the Neotropical region. Insufficient data is available to estimate current species richness of many areas in Belize, including Billy Barquedier National Park (BBNP). The objective of this study was to explore trapping and documentation methods of terrestrial mammals in …

Voces Del Canal: Building Safe Communities Through Strong Partnerships In The Canal, Julia Van Der Ryn, Jennifer Lucko, Tom Wilson, Omar Carrera, Miho Kim, Reem Assil, Saba Waheed, Jennifer Lee, Diego Garcia, Bill Hogan

Jennifer Lucko

The Canal, a vibrant community of Latino immigrant families, is rich in diversity and cultural traditions, strong family networks, and a determination towards economic selfsufficiency. Latino immigrants in Marin County are heavily concentrated in the Canal and have the highest labor force participation rates in the County.i Despite being a vital part of Marin’s social, economic, and cultural society, Canal residents continue to struggle to meet basic necessities for their families.

To this end, a coalition of resident leaders from the community came together to form Voces del Canal to lead an unprecedented community-driven research project. Residents wanted to affirm …

Developing A Social Marketing Plan For Direct To Consumer Agricultural Operations, Madelaine Giebler

Agricultural Education, Communications and Technology Undergraduate Honors Theses

Since the 1980 farm crisis, the agricultural economy has continued to decline with United States farmers receiving less than 16 cents per dollar spent on food (Dunnum, 2017). As a way of combatting decreased profitability, agricultural producers are turning to direct marketing (Rainey, et al., 2011). Direct marketing exists as a social marketing in which producers develop a personal relationship with their customers (Rainey, McGraw, & Popp, 2011; Weinreich, 2011). In order to be successful in social marketing, the audience with which they are trying to reach must be determined as well as the most effective way to meet the …

Shifting Views: How Experiential Learning Shapes University Students’ Sense Of Civic Engagement And Solidarity On Migration, Karen Larke

Master's Theses

Higher education institutions have put more weight on the use of experiential learning to provide students with opportunities to grow intellectually and develop as engaged citizens. Many recent studies have looked at the quality and educational impacts of a variety of experiential and service learning experiences, yet few have explored what other ideological impacts may result from specific non-curricular experiential learning experiences. This study measured the impact of experiential learning, in the form of week-long migration-themed trips, on undergraduate student’s self-reported levels of solidarity, and related measures of civic engagement and political engagement and activism around migration issues. This study …

Prototyping A Capacitive Sensing Device For Gesture Recognition, Chenglong Lin

Computer Science and Computer Engineering Undergraduate Honors Theses

Capacitive sensing is a technology that can detect proximity and touch. It can also be utilized to measure position and acceleration of gesture motions. This technology has many applications, such as replacing mechanical buttons in a gaming device interface, detecting respiration rate without direct contact with the skin, and providing gesture sensing capability for rehabilitation devices. In this thesis, an approach to prototype a capacitive gesture sensing device using the Eagle PCB design software is demonstrated. In addition, this paper tested and evaluated the resulting prototype device, validating the effectiveness of the approach.

Characterization Of High Temperature Optocoupler For Power Electronic Systems, David Gonzalez

Electrical Engineering Undergraduate Honors Theses

High-temperature devices have been rapidly increas due to the implementation of new technologies like silicon carbide, high-temperature ceramic, and others. Functionality under elevated temperatures can reduce signal integrity reducing the reliability of power electronic systems. This study presents an ongoing research effort to develop a high-temperature package for optocouplers to operate at higher temperature compared with commercial devices. Low temperature co-fired ceramic (LTCC) was used as the substrate. Bare die commercial LED and photodetectors were attached to the substrate and tested for functionality. Preliminary results show enhanced performance at elevated temperatures compared to a commercial optocoupler device.

Very Low Power Cockcroft-Walton Voltage Multiplier For Rf Energy Harvesting Applications, Trace Langdon

Electrical Engineering Undergraduate Honors Theses

A device was required that could harvest the electromagnetic energy present in ambient radio frequency (RF) signals. A part of this device must convert the AC RF signal received by the antenna into a DC signal that can be used in an embedded application. Since the RF signal amplitude is small, it must first be amplified and rectified to become a usable signal. The Cockcroft-Walton voltage multiplier is a subsystem of the design which ideally converts a 100 mV AC signal coming from the antenna to a 350 mV DC signal. The output of the voltage multiplier is used to …

Designing A Solar Pv System To Power A Single-Phase Distribution System, Ana Guerra Vega

Electrical Engineering Undergraduate Honors Theses

Over the last decade, the costs of PV system components have dropped more than 70%. Additionally, green energy incentives like the 30% tax credit have been pushed forward. PV solar systems have become accessible to the general public. Companies are pledging to reduce their carbon emissions.

As part of their green initiative, the City of Fayetteville has requested a feasibility study for a PV system to be installed on the rooftop of the Facilities Management building, 115 S. Church Ave, Fayetteville, AR, 72701. This thesis shows the design process of this PV system and the return on investment estimation. While …

Investigating Virus Clearance Via Ph Inactivation During Biomanufacturing, Wenbo Xu

Biomedical Engineering Undergraduate Honors Theses

In the processing of biopharmaceuticals, viral clearance and viral safety are important for the development of monoclonal antibodies. Murine xenotropic leukemia virus (XMuLV) is one of the retroviruses, recommended by Food and Drug Administration (FDA) as a model virus for viral clearance via inactivation from therapeutics derived from Chinese hamster ovary cells (CHO). A robust and effective method was investigated to clear or inactivate endogenous viruses by low pH inactivation. The effects of different conductivity and inactivated time on XMuLV clearance was determined. Acetate buffer was prepared with different conductivity, and 2% XMuLV was spiked into acetate buffer. XMuLV virus …

The Effect Of Foreign Direct Investment On Food Security: A Case Study From Rural Mozambique, Kali Fleming

Agricultural Economics and Agribusiness Undergraduate Honors Theses

Poverty and food insecurity in the sub-Saharan African region have been exacerbated by the worst drought in 23 years, which impacted 25 countries in Southern and Eastern Africa from 2015-2016. In Mozambique alone it was estimated that the 2015-2016 drought resulted in over 1.5 million people becoming food insecure (FAO, 2016). To mitigate the increasing problem of household food insecurity in sub-Saharan Africa, the World Food Program recommends job creation to target the most vulnerable populations. Job creation is often the result of Foreign Direct Investment (FDI). However, critics of FDI often cite concerns of human rights abuses, inadequate working …

Concentration Of Hot Water Extracts Of Anthocyanins Obtained From Muscadine Grape Pomace Using Membrane-Osmotic Distillation, Chuqiao Mai

Food Science Undergraduate Honors Theses

Anthocyanins are well known for their health-promoting benefits. The goal of this study was to evaluate a distillation-based membrane technology to concentrate aqueous anthocyanins extracted from muscadine grape pomace using polypropylene (PP) or ethylene chlorotrifluoroethylene (ECTFE) membranes. A hot water extraction method was utilized to extract the anthocyanins from the pomace. A pre-experimental run using DI water as feed was conducted to optimize the NaCl brine concentration for osmotic distillation and it was determined that 4M was the optimal concentration. The aqueous anthocyanins extraction was filtrated through a series of filter of different pore sizes before the distillation process. Membrane …

Evaluation Of Drought Tolerance In Arkansas Cowpea Lines At Seedling Stage, Qirui Cui

Crop, Soil and Environmental Sciences Undergraduate Honors Theses

Cowpea [Vigna unguiculate (L.) Walp.] is not only a healthy, nutritious and versatile leguminous crop, it also has a relatively high adaptation to drought. Researches have shown that cowpea lines have a high tolerance to drought, and many of them can survive over 40 days under very hot and dry conditions. The cowpea (Southern pea) breeding program at the University of Arkansas (UA) has been active for over 50 years and has produced more than 1,000 advanced breeding lines. And the purpose of this study is to evaluate the drought-tolerant ability in Arkansas cowpea lines and use the drought tolerant …

Identifying Fake News Using Emotion Analysis, Brady Gilleran

Computer Science and Computer Engineering Undergraduate Honors Theses

This paper presents research applying Emotional Analysis to “Fake News” and “Real News” articles to investigate whether or not there is a difference in the emotion used in these two types of news articles. The paper reports on a dataset for Fake and Real News that we created, and the natural language processing techniques employed to process the collected text. We use a lexicon that includes predefined words for eight emotions (anger, anticipation, disgust, fear, surprise, sadness, joy, trust) to measure the emotional impact in each of these eight dimensions. The results of the emotion analysis are used as features …

Applications Of Fog Computing In Video Streaming, Kyle Smith

Computer Science and Computer Engineering Undergraduate Honors Theses

The purpose of this paper is to show the viability of fog computing in the area of video streaming in vehicles. With the rise of autonomous vehicles, there needs to be a viable entertainment option for users. The cloud fails to address these options due to latency problems experienced during high internet traffic. To improve video streaming speeds, fog computing seems to be the best option. Fog computing brings the cloud closer to the user through the use of intermediary devices known as fog nodes. It does not attempt to replace the cloud but improve the cloud by allowing faster …

Increasing Low-Income Residents’ Access To Fresh Produce Through A Local Mobile Pantry, Laura Wasson

Human Nutrition and Hospitality Management Undergraduate Honors Theses

Seeds that Feed (STF) is a mobile food pantry located in Fayetteville, Arkansas. STF receives produce from local farmers to distribute to residents in low-income housing sites throughout Northwest Arkansas. According to Feeding America, food insecurity affected 14.3% Washington County, Arkansas’ population in 2016. The purpose of this study was to determine if STF’s model is an effective way to increase individuals’ access to fresh fruits and vegetables and increase their potential to meet the United States Department of Agriculture’s Food Patterns (USDA-FP) for to fruit and vegetable consumption. Twenty-three participants from three sites completed the study. A survey was …

Turbulent Effects On Building Pressure Using A Two-Dimensional Finite Element Program, Jonese Woods

Civil Engineering Undergraduate Honors Theses

Much of the knowledge about building aerodynamics today was obtained from physical testing like wind tunnel testing. Physical testing is time-consuming and very expensive. As a result, computational methods like the finite element method are being explored for use in building aerodynamics. Despite several years of research, there is still not a clear understanding of the peak pressure on buildings due to turbulence. Many of the research thus far has focused on comparing different computational methods. However, much work is needed in understanding the capability of the individual methods. In this work, a two-dimensional finite element program is used to …

Tension Splitting Strength Of Bcsa Concrete Cylinders, Andrew Steven Deschenes

Civil Engineering Undergraduate Honors Theses

The focus of this research was to compare the tension splitting strength (TSS) of belitic calcium sufloaluminate (BCSA) cement concrete to tensile strength predicted by the American Concrete Institute (ACI) and to similarly proportioned portland cement (PC) concrete. BCSA is a rapid-setting cement with higher early strength, higher ettringite content, and lower calcium silicate hydrate (C-S-H) content than PC. PC and BCSA cement concrete cylinders were broken at different ages in both uniaxial compression and TSS. It was found that BCSA had a similar TSS to both the ACI prediction and PC TSS, but the results require further testing for …

Silver-Based Microbial Check Valve For Spacecraft Potable Water Systems, Rogelio E. Garcia

Chemical Engineering Undergraduate Honors Theses

As human space exploration increases, the development of a more efficient potable water treatment system suited for spacecraft becomes crucial. This Waste-management Education Research Consortium (WERC) challenge was designed to explore the viability of microbial control through the utilization of silver ions as a biocide for possible integration into the Tranquility Node 3 water purification system aboard the International Space Station (ISS). Current systems using iodine risk causing hyperthyroidism from overexposure; however, silver can be safely ingested without this side effect. After researching silver delivery methods including electrochemical ion production, controlled release, or a combination of the two, our team …

Investigation Of Acute Radiation-Induced Changes In Oxygenation In A Murine Breast Tumor Model, Alaa Abdelgawad

Biomedical Engineering Undergraduate Honors Theses

Around 50-60% of all cancer patients undergo radiation therapy. Although some patients show complete response with no recurrence, a significant proportion of the population still develop radiation resistance. It is important to identify tumor resistance at early stages of therapy in order to adjust treatment protocol and avoid extra exposure to radiation. Current methods to assess treatment response are only limited to anatomical measurements of tumor volume after therapy. Novel approaches that shed the light on any functional information during the course of radiotherapy could significantly improve our ability to identify patients who do not respond to radiation therapy. Diffuse …

The Effects Of Eicosapentaenoic Acid (Epa) And Docosahexaenoic Acid (Dha) On Brown Adipogenesis In Stem Cell Culture, Darynne Dahlem

Animal Science Undergraduate Honors Theses

Polyunsaturated fatty acids (PUFAs), especially eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), are major maternal dietary supplements due to their positive benefits on neurological tissue growth during the first 12 weeks of gestation. Previous studies show that EPA and DHA inhibit muscle formation but promote adipogenesis. However, no research has addressed the question whether high intake of EPA and DHA affects brown fat development during gestation. The objective of this study was to measure the effect of EPA and DHA supplement on brown adipogenesis and potential pathways related to mitochondrial biosynthesis using fibroblasts as in vitro model. Using Oil-Red-O staining …

Design Of Artificial Swarms Using Network Motifs: A Simulation Study, Khoinguyen Trinh

Mechanical Engineering Undergraduate Honors Theses

The objective of this research is to develop a new approach in engineering complex swarm systems with desired characteristics based on the theory of network motifs – subgraphs that repeat themselves (patterns) among various networks. System engineering has traditionally followed a top-down methodology which creates a framework for the system and adds additional features to meet specific design requirements. Meanwhile, complex swarm systems, such as ant colonies and bird flocks, are formed via a bottom-up manner where the system-level structure directly emerges from the interactions and behaviors among individuals. The behaviors of these individuals cannot be directly controlled, which makes …

Silicone Tadpole: Research Into Soft Bodies, Danielle Fernandez

Mechanical Engineering Undergraduate Honors Theses

In this thesis, research is conducted in the area of soft robotics by building a soft tadpole that can deform with a specific air pressure. The goal is to mimic the motion of an organic tadpole in respect to its S-shaped tail movement. The angle of deformation, derived from material mechanic theories, ranges from 45 to 80 degrees for this type of movement. The design includes a head compartment which acts as a tank to transfer nitrogen pressure and a tail section that receives the said pressure and bends as a result. The tail section was designed with two rows …

Optical Response Analysis Of Thz Photoconductive Antenna Using Comsol Multiphysics, Jose Isaac Santos Batista

Electrical Engineering Undergraduate Honors Theses

A THz photoconductive antenna consists of antenna pads laid over a photoconductive substrate. These types of antennas are excited through the application of an optical pump (laser), which generates carriers inside the semiconductor. The acceleration and recombination of these carriers produce photocurrent that excites the antenna and generates THz pulse. This thesis focuses on analyzing the optical response of a photoconductive antenna, which consist of the interaction of the incident electric field of a laser pump with the radiating device. It develops the amplitude modulation process of a plane wave of light into a laser pump. It also takes into …

The Diversity Of Terrestrial Mammals Surrounding Waterfall At Billy Barquedier National Park, Kelsey Johnson

Animal Science Undergraduate Honors Theses

Billy Barquedier is a National Park located in the Stann Creek district of Belize that contains Neotropical vegetation and wildlife. This study was performed in order to provide a baseline inventory and appearance frequency patterns of the terrestrial mammals located within Zone 1 of the park near a waterfall. The goal of the data and information collected during this study is to gain a greater understanding of the biodiversity and activity patterns of terrestrial mammals within the park and across Belize as a whole. The use of camera traps, small Sherman live traps, large live traps, and tracking methods were …

The Effects Of A Literacy-Based Mentoring Program On Empowering Preadolescent Girls In Their Development Of Confidence, Self-Concept, And Leadership Skillset, Sophia Vincent

Curriculum and Instruction Undergraduate Honors Theses

This study focuses on empowering preadolescent girls to develop confidence and move from a fixed to growth mindset, take responsibility for their actions, turn failures into learning opportunities, and cultivate a love for self. GIRLS: Leaders on the Rise is a literacy-based mentoring program for preadolescent girls designed to improve confidence, positive self-concept, and develop a leadership skillset through five targeted aspects of leadership: growth mindset, integrity, resilience, love and loyalty, and strengths. Adolescence is a time when students are discovering who they are and shaping their identities. Girls decline in their self-confidence during adolescence due to fear of failure, …

Perceptions Of The North American Free Trade Agreement And Mexican Migration: “What Is The Relationship Between Trade Liberalization And Labor Mobility?”, Colin Gonzalez

Political Science Undergraduate Honors Theses

In an effort to understand the effectiveness of the North American Free Trade Agreement, the author uses previous academic literature to assesses the success of the North American Free Trade Agreement’s primary and peripheral goals. To understand how North American citizens, perceive NAFTA and their future relationship with one another, the author uses survey data to analyze attitudes of American and Mexican citizens towards trade liberalization (NAFTA) and labor mobility. Regression analysis reveals that there is a positive relationship between labor mobility and trade liberalization for Mexican citizens but not for American citizens. This is a significant finding that contributes …

My Involvement Through Community Engagement & Service, Maricar Valdez

Student Engagement Posters

Maricar Valdez discusses student engagement at Linfield College with regard to her involvement with First CLAS and Alternative Spring Break.