Open Access. Powered by Scholars. Published by Universities.®

Education Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 30 of 65

Full-Text Articles in Education

Effects Of Preseason Concussion Education On Self-Reported Likelihood And Confidence In Concussion Reporting, Dana Edward Cash Jan 2019

Effects Of Preseason Concussion Education On Self-Reported Likelihood And Confidence In Concussion Reporting, Dana Edward Cash

Graduate Theses and Dissertations

Around three million concussions happen in the United States from sport and recreational activity alone, and it is estimated 50% of concussions go undiagnosed. Collegiate athletes have been found to not report their symptoms of concussion mainly because they felt their symptoms were not severe enough and they did not think there were any long-term consequences from continuing to play. This study attempts to find if preseason concussion education for collegiate hockey players and club athletes changes their perceptions about concussions, and if these changes are maintained after returning to sport/competition. This study used three identical surveys over three ...


Analyzing The Effects Of Ca2+ Dynamics On Mitochondrial Function In Health And Disease, Patrick Toglia Apr 2018

Analyzing The Effects Of Ca2+ Dynamics On Mitochondrial Function In Health And Disease, Patrick Toglia

Graduate Theses and Dissertations

Mitochondria plays a crucial role in cells by maintaining energy metabolism and directing cell death mechanisms by buffering calcium (Ca2+ )from cytosol. Therefore, the Ca2+ overload of mitochondria due to the upregulated cytosolic Ca2+ , observed in many neurological disorders is hypothesized to be a key pathway leading to mitochondrial dysfunction and cell death. In particular, Ca2+ homeostasis disruptions due to Alzheimer’ s disease (AD)-causing presenilins (PS1/PS2) and oligomeric forms of β-amyloid peptides Aβ commonly found in AD patients are presumed to cause detrimental effects on the mitochondria and its ability to function properly. We ...


Training Reduces The Drawing Detriments Associated With Categorical Perception, Larissa F. Arnold Jan 2018

Training Reduces The Drawing Detriments Associated With Categorical Perception, Larissa F. Arnold

Graduate Theses and Dissertations

Previous research suggests that categorical perception may interfere with a novice artist’s ability to accurately draw simple shapes. Specifically, when asked to draw two shapes of slightly different sizes, participants tend to exaggerate the categorical difference between the two and draw the small shape too small. Similarly, participants tend to draw oblique angles more oblique than they should be when they are close to perpendicular or overlapping. The current set of experiments investigated whether these categorical errors could predict participants’ drawing ability on a more complex drawing task. A simple linear regression revealed that categorical errors in angle could ...


Perceived Distance And Instructional Design In Online Agriculture And Life Science Courses, Yahya S. Alotibi Jan 2018

Perceived Distance And Instructional Design In Online Agriculture And Life Science Courses, Yahya S. Alotibi

Graduate Theses and Dissertations

ABSTRACT

The purpose of this study was to describe relationships between factors that influence perceived transactional distance (course structure, course interaction, and learner autonomy) and instructional design aspects that help to reduce transactional distance from the learner's perspective. Using Transactional Distance Theory. Specifically, the study sought to identify the extent to which learners felt they were distant from their online course and describe relationships between online students’ perceived distance and factors of transactional distance (course structure, interactions, and learner autonomy).

An online survey was disseminated to 271 students who enrolled in online courses in the College of Agriculture and ...


Perceptions Of Middle, High School And Community College Agricultural Teachers In Iowa Regarding Agricultural Awareness Concepts And Activities In The Middle School Curriculum: Grades 7-9, Abisoye Oyeyinka Odubanjo Jan 2018

Perceptions Of Middle, High School And Community College Agricultural Teachers In Iowa Regarding Agricultural Awareness Concepts And Activities In The Middle School Curriculum: Grades 7-9, Abisoye Oyeyinka Odubanjo

Graduate Theses and Dissertations

Teachers are relied upon to teach basic agricultural knowledge among young learners who are devoid of real-world agricultural experiences. The middle school serves as a tool for achieving this goal because self and environmental awareness, and career choices begin at this educational stage. Since agricultural teachers are the major driver of agricultural education program in the middle school, their perceptions regarding this program are important. The purpose of this study was to determine the perceptions of agricultural teachers regarding teaching agriculture and selected course content in the middle school. The Theory of Planned Behavior was used as a theoretical framework ...


Implementation Of The Food Safety Modernization Act Among Fruit And Vegetable Processors In The North Central Region, Jacques Ludwig Alexander Overdiep Iii Jan 2018

Implementation Of The Food Safety Modernization Act Among Fruit And Vegetable Processors In The North Central Region, Jacques Ludwig Alexander Overdiep Iii

Graduate Theses and Dissertations

The Food Safety Modernization Act (FSMA) is a food safety law that changed the way food companies are regulated to prevent foodborne illnesses. The FSMA Preventive Controls for Human Food rule was released September 2016 for facilities in manufacturing, processing, packing, and holding of human food. The North Central Region (NCR) Center for FSMA Training, Extension and Technical Assistance was founded by the Food and Drug Administration to assist with the education of processors around the Midwest. The NCR Center funded a project with three phases designed to help small fruit and vegetable processors in the Midwest understand their relationship ...


The Growing Together Project: Understanding Impacts On Field Day Attendees And Iowa Master Gardeners, Laura Irish Jan 2018

The Growing Together Project: Understanding Impacts On Field Day Attendees And Iowa Master Gardeners, Laura Irish

Graduate Theses and Dissertations

Citizen science has been shown to be an effective tool for increasing data collection, as well as a great benefit to those who participate in the research project. The rising costs and limited funding for conducting large-scale research projects make citizen science projects valuable assets for researchers. Understanding the impact of citizen science projects on the volunteers must be done to better engage with and retain the volunteers. The Growing Together project, a partnership between the ISU Extension and Outreach Master Gardener program and the Human Sciences Extension, was created to increase food security in Iowa. The two major components ...


Investigations Into The Non-Mevalonate Isoprenoid Biosynthesis Pathway's First Two Enzymes Utilizing Hybrid Qm/Mm Techniques, Justin K. White Nov 2017

Investigations Into The Non-Mevalonate Isoprenoid Biosynthesis Pathway's First Two Enzymes Utilizing Hybrid Qm/Mm Techniques, Justin K. White

Graduate Theses and Dissertations

Molecular drug design begins with the identication of a problem to solve. This work identies the growing resistance among human pathogens to current treatments. Once the problem is identied and understood, solutions must be proposed. This one is straight forward, we need new antimicrobial drugs. More specically, we need to identify novel targets to inhibit. A large portion of antibiotics focus on disruption of macromolecular production while only a few target metabolic systems. Finally, you need to propose solutions based on the information gathered. In order to avoid existing resistance, it is important to avoid the macromolecular route and focus ...


Thermodynamic And Kinetic Aspects Of Hen Egg White Lysozyme Amyloid Assembly, Tatiana Miti Nov 2017

Thermodynamic And Kinetic Aspects Of Hen Egg White Lysozyme Amyloid Assembly, Tatiana Miti

Graduate Theses and Dissertations

Deposition of protein fibers with a characteristic cross-β sheet structure is the molecular marker associated with human disorders ranging from Alzheimer's disease to type II diabetes and spongiform encephalopathy. Given the large number of non-disease related proteins and peptides that have been shown to form amyloid fibrils in vitro, it has been suggested that amyloid fibril formation represents a generic protein phase transition. In the last two decades it has become clear that the same protein/peptide can assemble into distinct morphologically and structurally amyloid aggregates depending on the solution conditions. Moreover, recent studies have shown that the early ...


A Program Evaluation Of A Worksite Wellness Initiative For Weight Loss, Nicholas Martinez Jul 2017

A Program Evaluation Of A Worksite Wellness Initiative For Weight Loss, Nicholas Martinez

Graduate Theses and Dissertations

The purpose of this study was to conduct a program evaluation of ACME’s worksite weight loss initiative and collect evidence relative to the efficacy of the program. An anonymous online survey was administered to participants of the weight loss initiative. The survey was designed to gather information relative to the research questions, which explored the initiative’s barriers to participation, alignment of initiative with the goals of participants, utilization of initiative resources, overall strengths, weaknesses, and areas of improvement for the weight loss initiative, as well as the respondents’ general profile for the six dimensions of wellness. Reporting of ...


Taxonomy, Ecology, And Behavior Of The Kleptoplastic Sea Slug Elysia Papillosa, William Alan Gowacki Mar 2017

Taxonomy, Ecology, And Behavior Of The Kleptoplastic Sea Slug Elysia Papillosa, William Alan Gowacki

Graduate Theses and Dissertations

Sacoglossan sea slugs are one of the best known examples of specialist herbivores in the marine environment and can be found strongly associated with their algal hosts and food sources. Perhaps the most intriguing characteristic of many sacoglossans is their ability to sequester functional chloroplasts from their algal food sources in a process called kleptoplasty. Despite this, there continues to be issues regarding taxonomic identification of species. In turn, the ecological characteristics of many of these slugs, such as algal host and food source preference, as well as their behavioral aspects, have received little attention. A prime example of these ...


The Effects Of Prequestions On Classroom Learning, Shuhebur Rahman Jan 2017

The Effects Of Prequestions On Classroom Learning, Shuhebur Rahman

Graduate Theses and Dissertations

Previous laboratory studies have shown that the use of prequestions (questions deployed prior to a learning episode) improves students’ learning. The current study addressed whether these same effects would occur when using prequestions in a classroom setting. In a classroom study the effects of prequestions on immediate and on delayed retention were assessed where some students received questions before lecture (Prequestion Group) and other students did not (Control Group). To determine the immediate effects of prequestions all students were given an end of class quiz in which students in the Prequestion Group had to answer the prequestions as well as ...


Determining Why Agricultural Educators Are Leaving The Profession And How To Increase The Retention Rate, Jay Solomonson Jan 2017

Determining Why Agricultural Educators Are Leaving The Profession And How To Increase The Retention Rate, Jay Solomonson

Graduate Theses and Dissertations

The field of agricultural education has experienced a consistent labor shortage the past several decades. Consequently, many school districts struggle to fill their open positions, while others are forced to shut down their agricultural programs completely due to inadequate staffing. Research indicates teacher attrition as a predominant factor behind the teacher shortage. The purpose of this mixed-methods study was to determine why agricultural educators are leaving the profession and identify potential action steps to alleviate the problem. Specific objectives included: (1) identify factors influencing current agricultural educators’ decision to leave or stay in the profession; (2) determine factors associated with ...


Comparing Game Simulation To Concept Models For Student-Centered Learning In Biology, Margaurete Romero Nov 2016

Comparing Game Simulation To Concept Models For Student-Centered Learning In Biology, Margaurete Romero

Graduate Theses and Dissertations

Science education research continues to demonstrate improved learning with active-learning techniques compared to lectures. However, the question of which active-learning methods are the most effective for learning complex scientific principles in various context still remains. Models are commonly used in activities that allow students to simplify complex systems and understand how components interact. I investigated the outcomes for student learning and engagement of two model-based activities - concept models and game simulations. The activities were conducted in an introductory biology course in sixteen discussion sections. Eight sections were assigned to the concept model activity and eight to the simulation activity. To ...


Exploring The Relationship Between Severity Of Illness And Human Milk Volume In Very Low Birth Weight And Extremely Low Birth Weight Infants Over Six Weeks, Shannon Leigh Morse Apr 2016

Exploring The Relationship Between Severity Of Illness And Human Milk Volume In Very Low Birth Weight And Extremely Low Birth Weight Infants Over Six Weeks, Shannon Leigh Morse

Graduate Theses and Dissertations

Very low birth weight and extremely low birth weight neonates have tremendous risk of mortality. This is a grave concern; however, survival alone is not the goal of neonatal intensive care. Survival, along with a reduction or elimination of life long morbidity is the aim of neonatal intensive care.

Human milk is known as the best nutrition for babies and a growing body of evidence supports that human milk is critical in helping these fragile neonates mitigate the overwhelming risks they face. Therefore, the purpose of this study was to examine the relationship between neonatal severity of illness and human ...


The Effect Of Exercise Order On Body Fat Loss During Concurrent Training, Tonya Lee Davis-Miller Mar 2016

The Effect Of Exercise Order On Body Fat Loss During Concurrent Training, Tonya Lee Davis-Miller

Graduate Theses and Dissertations

While the benefits of both cardiovascular exercise and resistance training have been well documented, there is a lack of evidence for the order of exercise that is most effective when both are done in the same day. This study was designed to look at two groups of participants performing both resistance (R) and cardiovascular (C) training in the same day to determine if their order, resistance before cardiovascular (R-C) or cardiovascular before resistance (C-R), matter with regard to changes in body composition, maximal strength, and maximal aerobic capacity. The participants were 17 women between the ages of 30 and 55 ...


The Ecological Succession Of Mosquitoes Inhabiting Waste Tires In A Subtropical Swamp And Upland Forest In Central West Florida, Emily Thuong Nguyen Dinh Feb 2016

The Ecological Succession Of Mosquitoes Inhabiting Waste Tires In A Subtropical Swamp And Upland Forest In Central West Florida, Emily Thuong Nguyen Dinh

Graduate Theses and Dissertations

Literature has not yet seen a contribution involving the description of successional patterns of mosquitoes (Diptera: Culicidae) inhabiting discarded automobile tires in sylvan areas nor an investigation into the macro- and micro-environmental factors that may influence the seasonal shifts in species composition and abundance in that respective habitat. Waste tires in undeveloped forests are a hazard to human and animal health because they can support a population of vector mosquitoes. Locating productive waste tire mosquito habitats is problematic in wooded areas but is crucial for diminishing pathogen transfer in areas where humans have regular access to forests because of possible ...


Biological Diversity In The Biology Classroom: Teachers' Approaches, Attitudes, And Knowledge, Krystal Rachelle Wikstrom Jan 2016

Biological Diversity In The Biology Classroom: Teachers' Approaches, Attitudes, And Knowledge, Krystal Rachelle Wikstrom

Graduate Theses and Dissertations

Many biological scientists agree that our planet is experiencing a loss of biological diversity, and the available data provide support for the conclusion that the Earth may be facing a sixth mass extinction event. It is essential that the people of the world understand the threats that we face as a result of the loss of biodiversity. An important place to improve understanding is in our secondary school classrooms, as tomorrow’s conservation-minded citizens are today’s students. Before we can reach out to the students with this information, it is important to understand the current state of biodiversity education ...


“They Don’T Get The Respect They Should”: An Examination Of Visual Communication Disciplinary Practices In Composition And The Biological Sciences, Erin Bethany Zimmerman Jan 2016

“They Don’T Get The Respect They Should”: An Examination Of Visual Communication Disciplinary Practices In Composition And The Biological Sciences, Erin Bethany Zimmerman

Graduate Theses and Dissertations

This study investigates the similarities and differences of visual communication practices and conventions in the composition and biological sciences disciplines. Although scholars and instructors in Writing across the Curriculum (WAC) and composition have examined disciplinary differences in written communication, little is known about disciplinary differences of visual communication. While writing has been the central focus of composition classes, visuals are often key components of the composing process for individuals working in natural sciences fields like the biological sciences.

This dissertation reports the results from a two-part qualitative analysis research project: 1) an examination of how composition and general science-writing textbooks ...


Using A Pen Pal Program To Assess Student Learning Through Culture And School Gardens, Samantha Kae Green Jan 2016

Using A Pen Pal Program To Assess Student Learning Through Culture And School Gardens, Samantha Kae Green

Graduate Theses and Dissertations

Youth at two schools (St. John, USVI and West Liberty, IA) participated in the I Grow Culture Pen Pal Program. The purpose of the 9-week program was to evaluate middle school student's increase in knowledge and confidence related to communicating local gardening, cultural understanding and sustainability. The collaborating schools were specifically chosen because they each meet the criteria of having a garden for middle school students to integrate English and science into their agriculture curriculum. The objectives of this program were to increase awareness of garden sustainability, understand place-based gardening and environmental sciences, while establishing a garden-based distance cultural ...


Ratios And Benchmarks As Tools For Local Food Hub Decision-Making: A Comparative Case Study, Savanna May Lyons Jan 2016

Ratios And Benchmarks As Tools For Local Food Hub Decision-Making: A Comparative Case Study, Savanna May Lyons

Graduate Theses and Dissertations

Food hubs, or local food aggregation and distribution businesses, are triple-bottom-line firms that play an increasingly important role in connecting small and mid-sized farmers to wholesale and retail markets. This paper explores how food hubs can use their financial data to identify and address strengths and challenges in their operations. We propose a “dashboard” of key metrics and benchmarks for food hub managers, and apply it a comparative case study of four food hubs over three years of operations. We compare and contrast the liquidity, cash flow, efficiency, solvency and repayment capacity of the four cases, and analyze cross-cutting themes ...


Team-Based Learning In An Undergraduate Capstone Course: Examining The Effectiveness Of A Learner-Centered Instructional Method For Farm Management And Operation Students, Op Mccubbins Jan 2016

Team-Based Learning In An Undergraduate Capstone Course: Examining The Effectiveness Of A Learner-Centered Instructional Method For Farm Management And Operation Students, Op Mccubbins

Graduate Theses and Dissertations

The purpose of this dissertation was to describe the effectiveness of Team-Based Learning (TBL) in an undergraduate capstone course within the College of Agriculture and Life Sciences at Iowa State University. The effectiveness of TBL was measured in three ways, as outlined in the objectives for this study. The objectives were to: (1) Describe student perceptions regarding their beliefs and attitudes about learning, motivation to learn, and professional development through critical thinking; (2) Examine student engagement in a TBL formatted course via student reported frequency of engagement activities compared to instructor-rated importance of engagement activities; (3) Explore the impact a ...


Motivation And Retention Of Iowa’S Master Gardener Volunteers, Bryn Takle Jan 2015

Motivation And Retention Of Iowa’S Master Gardener Volunteers, Bryn Takle

Graduate Theses and Dissertations

Retention of participants in volunteer organizations has been shown to be not only a challenge, but also a great benefit to the organization. Rising costs of training and continuing education make each interaction valuable from both perspectives. Volunteer opportunities are abundant but must be meaningful and engaging for the participants in order to keep them involved. Using electronic survey software, Iowa Master Gardeners were asked to respond to a series of questions investigating 1) the current demographics of the population, 2) reasons volunteers associate with the Master Gardener program, and 3) the continuing education topics and delivery methods most preferred ...


Emerging Issues In The U.S. Corn Belt: Infection Of Corn By Clavibacter Michiganensis Subsp. Nebraskensis And Use Of Foliar Fungicides To Protect Yield, Salome Mallowa Obura Jan 2015

Emerging Issues In The U.S. Corn Belt: Infection Of Corn By Clavibacter Michiganensis Subsp. Nebraskensis And Use Of Foliar Fungicides To Protect Yield, Salome Mallowa Obura

Graduate Theses and Dissertations

Currently two major issues pertaining to disease management in corn production in the US Corn Belt are the spread of Goss's wilt and leaf blight caused by Clavibacter michiganensis subsp. nebraskensis (Cmn), and the use of foliar fungicides on corn for `plant health' benefits. This dissertation presents data regarding infection of corn by Cmn, and fungicide effects on disease management and yield.

Greenhouse and laboratory research was undertaken to determine if infection of corn by Cmn may occur without severe wounding, such as that caused by hail, sand blasting or wind damage. Corn plants with no obvious wounding were ...


Pedology Of Corn Productivity Indices For Selected Parts Of Southern Highland Zone Of Tanzania, Johnson Godlove Mtama Jan 2015

Pedology Of Corn Productivity Indices For Selected Parts Of Southern Highland Zone Of Tanzania, Johnson Godlove Mtama

Graduate Theses and Dissertations

Scientific investigations to determine land use planning and interpretations for corn productivity potential in the Southern Highland Zone of Tanzania were conducted. The assessment of soils corn growth potential has been conducted in four selected pedons namely; Uyole, Mbimba, Inyala and Seatondale. Pedological, physical, chemical characterization and an attempt to develop the pedotransfer functions were done. The results show that the soils have deep to very deep sola, subangular blocky structures, evidence of pedogenic clay movement, fine to coarse texture, bulk density ranged from 0.79 to 1.46 g/cm3, pH ranged from slightly acidic to slightly alkaline, cation ...


Associations Between The Family Nutrition And Physical Activity Screening Tool And The Youth Activity Profile, Kimberly Ann Klimesh Jan 2015

Associations Between The Family Nutrition And Physical Activity Screening Tool And The Youth Activity Profile, Kimberly Ann Klimesh

Graduate Theses and Dissertations

Childhood obesity affects one third of children and adolescents and is expected to increase in coming years. Obesity has been linked to both genetic and environmental factors with more recent research focusing on the role parents play in childhood obesity. The Family Nutrition and Physical Activity (FNPA) Screening tool was developed to provide practical ways to evaluate home obesogenic environments. However, no study to date has examined associations between FNPA scores and child behaviors. Therefore, the purpose of this study was to examine associations between FNPA scores from parents and child reported lifestyle behaviors as assessed by an established self-report ...


An Investigation Into The Habitat, Behavior And Opportunistic Feeding Strategies Of The Protected Goliath Grouper (Epinephelus Itajara), Angela Collins Apr 2014

An Investigation Into The Habitat, Behavior And Opportunistic Feeding Strategies Of The Protected Goliath Grouper (Epinephelus Itajara), Angela Collins

Graduate Theses and Dissertations

Groupers (Epinephelidae: Epinephelinae) are apex predators within many reef communities worldwide. Grouper landings contribute significantly to global fisheries, and many populations are suffering from unsustainable levels of exploitation. The large size, site specificity and catchability of most groupers increase susceptibility to fishing pressure, and a large number of grouper species throughout the world are currently overfished. Multiple species are listed as endangered or threatened, and many have suffered local extirpations across their range. Removal of these upper level predators can significantly alter community structure and result in second order effects that may have critical ecological implications. The economic and ecological ...


Epibenthic Mobile Invertebrates Along The Florida Reef Tract: Diversity And Community Structure, Kristin Netchy Mar 2014

Epibenthic Mobile Invertebrates Along The Florida Reef Tract: Diversity And Community Structure, Kristin Netchy

Graduate Theses and Dissertations

Benthic mobile invertebrates are important components of coral-reef diversity and community structure, though, in most cases, their ecological contributions are poorly known. Baseline information on their diversity, prevalence, assemblages, and ecological roles is needed to aid in the conservation of coral-reef habitats. The objectives of this study are to 1) describe diversity and assemblages of epibenthic, mobile invertebrates in shallow water coral-reef communities in Florida, 2) evaluate their ecological roles by reviewing published literature on diet, and 3) measure the degree of linear dependence between mobile invertebrates and scleractinian corals. Underwater surveys were conducted in the summer of 2013 at ...


Student Identity Considerations And Implications Associated With Socioscientific Issues Instruction, Mitchel James Ruzek Mar 2014

Student Identity Considerations And Implications Associated With Socioscientific Issues Instruction, Mitchel James Ruzek

Graduate Theses and Dissertations

The purpose of this investigation was to explore how aspects of identity, perceived levels of controversy, and the strength of a student's attachment to their controversial identity relate to conceptual understanding and knowledge acquisition during socioscientific issues (SSI) based instruction in a biology classroom. The knowledge gained from this study will have the capacity to enhance our understanding of the role that attachment to identity plays during SSI negotiation. Additionally, insight was gained into the role played by aspects of identity in conceptual understanding of scientifically controversial topics during SSI based instruction.

This study contributed to the existing knowledge ...


People In Ecosystems/Watershed Integration: Visualizing Ecosystem Services Tradeoffs In Agricultural Landscapes, Carrie Michelle Chennault Jan 2014

People In Ecosystems/Watershed Integration: Visualizing Ecosystem Services Tradeoffs In Agricultural Landscapes, Carrie Michelle Chennault

Graduate Theses and Dissertations

Educational modeling in agricultural and environmental sciences provides access to the scientific knowledge needed to address local and global challenges that affect human wellbeing. Ecosystem services tradeoffs frameworks can enhance wellbeing by facilitating agricultural landscape design to produce multiple ecosystem services while maintaining farmer profitability and mitigating risk to farmers. At present, few broadly accessible tools evaluate how changes to land management affect the types and levels of ecosystem services delivered to humans. I developed a tool, People in Ecosystems/Watershed Integration version 2 (PE/WI or PE/WI v2), to fill this gap and foster multidimensional and integrative land ...