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

Digital Commons Network™

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

2021

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 21661 - 21690 of 24294

Full-Text Articles in Entire DC Network

Elementary Preservice Teachers’ Trajectories For Appropriating Engineering Design–Based Science Teaching, Brenda Capobianco, Jeffrey Radloff Jan 2021

Elementary Preservice Teachers’ Trajectories For Appropriating Engineering Design–Based Science Teaching, Brenda Capobianco, Jeffrey Radloff

Purdue Center for Early Learning Faculty and Staff Publications

Learning to teach science using engineering design is a complex endeavor for elementary preservice teachers (PSTs). This entails helping PSTs understand students as sense makers and recognizing ways to notice, respond, and leverage their students’ ideas throughout the design process. In this study, we follow a cohort of elementary PSTs through a 16-week method course including a related field experience in a local STEM intermediate school (grades 5–6) to better understand how they organize, plan for, and attempt to integrate engineering design–based science teaching. Data were gathered through interviews, lesson plans, reflective narratives, and classroom observations. Data were analyzed using …

Go to article

Role Of Vascular Endothelial Growth Factor Receptor 2 Pathway Due To Preeclampsia: A Review, Firdous Ali Jan 2021

Role Of Vascular Endothelial Growth Factor Receptor 2 Pathway Due To Preeclampsia: A Review, Firdous Ali

Williams Honors College, Honors Research Projects

Preeclampsia is a pregnancy complication that is characterized mainly by hypertension in the mother. The exact pathogenesis of preeclampsia is unknown, although the disease is attributed to a number of factors such as angiogenic factor levels and endothelial dysfunction. Presently, the control program for the disease involves the delivery of the fetus and the placenta. There is a need to develop novel therapies that would control preeclampsia from the moment it is diagnosed to minimize the effects on the mother and child. VEGF is a protein involved in the pathogenesis of the condition. The defect in one of its receptors, …

Go to article

Synthesis Of Novel Porphyrin Derived Molecules For The Study Of Self Assembly And Photophysical Properties, Alex Nguyen Jan 2021

Synthesis Of Novel Porphyrin Derived Molecules For The Study Of Self Assembly And Photophysical Properties, Alex Nguyen

Williams Honors College, Honors Research Projects

The photochemical capabilities of self-assembling porphyrins holds the potential to eliminate the use of fossil fuels. Porphyrins have the ability to absorb solar energy to excite its electrons within the highly conjugated π system of the porphyrin ring. The excited electron can then be donated thus creating a charge separated state between the porphyrin donor and the electron acceptor. With self-assembly of porphyrin monomers into a supramolecular structure, this charge separated state can be emphasized and prolonged so the energy potential generated can be harvested. Here, the synthesis of porphyrin derivatives substituted with biologically found molecules is described. The lysine …

Go to article

Smart Home Pet Feeder, Andrew Markja, Simona Zdravev, Timothy Zubek, Christian Jackson Jan 2021

Smart Home Pet Feeder, Andrew Markja, Simona Zdravev, Timothy Zubek, Christian Jackson

Williams Honors College, Honors Research Projects

The goal of this project was to design a Smart Home Pet Feeder that will allow the owner to feed their pet using 4 different methods. The methods are: manually, scheduled, app/url, Alexa/Google. The advantages of this design are that it will become convenient for pet owners who are busy and unable to make it back to their house to feed their pets remotely or for those who enjoy the use of technology from within their home for no-trouble feeding.

Go to article

Sattvic Diet And All-Cause Mortality: A Systematic Review, Nrsimha Ghosh Jan 2021

Sattvic Diet And All-Cause Mortality: A Systematic Review, Nrsimha Ghosh

Williams Honors College, Honors Research Projects

A sattvic diet is a diet characterized by a moderate intake of food that is not reheated and is only eaten twice daily. It is mentioned in ancient Hindu scriptures such as the Srimad Bhagavad-gita. This paper aims to compare foods and habits considered to be sattvic with those considered to be rajasic and tamasic (those outside of the diet) in regard to all-cause mortality. Because of the many variable factors of all three diets, specific words mentioned in the texts were used to search Google Scholar, Agricola, Medline, Food Science Source, CINAHL Plus, Cochrane Library Online, PubMed, Health …

Go to article

Development Of Phagotrophic Algae-Based Process For Conversion Of Waste Organics To Algae Lipids As Potential Feedstock For Biofuel, Hannah Nelson Jan 2021

Development Of Phagotrophic Algae-Based Process For Conversion Of Waste Organics To Algae Lipids As Potential Feedstock For Biofuel, Hannah Nelson

Williams Honors College, Honors Research Projects

Interest in sustainable feedstock for biofuel has encouraged research on the production of phagotrophic algae from bacteria using a two-staged continuous-flow system. Bacteria cultures were fed the content of a waste stream from The J.M. Smuckers Company containing high concentrations of sugar. In the design, the bacteria effluent overflowed into the algae tank which was kept at a set volume. Several methods were developed to assist in maintaining the system at steady state and minimize the impact from contaminants. A rigorous cleaning protocol was implemented for both tanks, effectively eliminating protozoa from the bacteria system. The protozoa were decreased in …

Go to article

The Evolution Of Technology, Kelly Cooper Jan 2021

The Evolution Of Technology, Kelly Cooper

Williams Honors College, Honors Research Projects

As per outlined by Dr. Quinn, this literature review will be a comprehensive review paper including an overview of current and previous research done in the field of Memetics. This will further include sifting through literature to hone in on a specific, new area of memetics Dr. Weeks is focused on, the evolutionary change of abiotic factors through purchasing. This is to be completed with the help of the library worshops designed to teach the skills necessary to undergo a literature review of this size. I will also participate in weekly reading groups to discuss papers and work closely with …

Go to article

Zombies In The Library Stacks, Laura Braunstein, Michelle R. Warren Jan 2021

Zombies In The Library Stacks, Laura Braunstein, Michelle R. Warren

Dartmouth Library Staff Publications

This chapter examines "the stacks" as a "zombie category" that retains the power to shape understanding despite being outmoded. We analyze three ways of thinking about "the stacks" that sustain digital humanities: first, the physical library stacks that are part of the information architecture that arranges scholarship; second, the technology stack of globalized computing that distributes scholarship; and finally, the social stack of human relationships that make everything possible. Each stack reveals something different about the digital humanities and the patterns of labor embedded within it. Drawing on the sociological lessons of the zombie category, we aim to disaggregate the …

Go to article

Emanata Presents: The End (2021) Jan 2021

Emanata Presents: The End (2021)

Emanata, 2014-

Started by illustrator and comics artist Chris Kindred in 2014 with Weird, Vol. 1, Emanata is VCU’s first-ever comics anthology.

Go to article

The Role Of Dynamic Wetting Behavior During Bubble Growth And Departure From A Solid Surface, Taylor P. Allred, Justin A. Weibel, S V. Garimella Jan 2021

The Role Of Dynamic Wetting Behavior During Bubble Growth And Departure From A Solid Surface, Taylor P. Allred, Justin A. Weibel, S V. Garimella

CTRC Research Publications

Surface wettability is known to have a major influence on the ebullition characteristics of a bubble growing from a solid surface. Yet, simplistic static characterization of the wetting behavior is still relied upon to indicate performance characteristics during boiling. In this study, a theoretical framework is developed for the wetting and dewetting processes occurring during bubble growth based upon the dynamic contact angles. This framework is incorporated into adiabatic volume-of-fluid simulations to capture the influence of the surface wettability on contact line and contact angle dynamics during bubble growth and departure. The simulations span a large range of dynamic wetting …

Go to article

Pharmacological Manipulation Of Nmda Receptor Activation And Synaptic Norepinephrine Levels: Effects On Sustained Attention In Male Rats, Zach V. Redding Jan 2021

Pharmacological Manipulation Of Nmda Receptor Activation And Synaptic Norepinephrine Levels: Effects On Sustained Attention In Male Rats, Zach V. Redding

Electronic Theses and Dissertations

Impaired attention is common in many neurological disorders. Normal attention promotes the selective processing of important sensory information. This selective processing relies on neurotransmitters, like glutamate, and neuromodulators, like norepinephrine, acting in frontal, parietal, and visual cortices. We tested treatments targeting the glutamatergic and noradrenergic systems using a rat model of attentional lapses.Rats were trained to respond quickly to stimuli in a two-choice reaction time task (2CRTT). Response times were split into initiation time (IT) and movement time (MT). Performance measures were derived from IT and MT distributions. IT mode represents sensorimotor processing speed when rats are attentive. IT deviation …

Go to article

Absurdity Is A Distinct Aesthetic Category, Sarah Jean Szopinski Jan 2021

Absurdity Is A Distinct Aesthetic Category, Sarah Jean Szopinski

Electronic Theses and Dissertations

Absurdity is the sudden discomfort caused by direct awareness of your being consciousand your relation to reality. Camus’ absurdist philosophy refers to the conflict between the human desire for inherent meaning in reality and the incomprehensible and irrational nature of the universe. Facing absurdity requires confronting the absurd feeling through introspective awareness of this tension. Otherwise, you are overcome by it, succumbing to a lack of mindfulness and avoidance of the confrontation. Absurdity, especially in its aesthetic dimension, has not received the sustained attention it deserves. In this paper, I argue that due to the sustained relevance of the absurd …

Go to article

The Perception And Strategies Of Building Rapport With Children With Autism Spectrum Disorder Via Telepractice, Anna Cathryn Wall Jan 2021

The Perception And Strategies Of Building Rapport With Children With Autism Spectrum Disorder Via Telepractice, Anna Cathryn Wall

Electronic Theses and Dissertations

Telepractice is a growing method in providing services in the profession of Speech-Language Pathology. One question with this growing method is, how do we build rapport when using telepractice? In this study, we intended to find what pediatric SLPs' perceptions and strategies of building rapport via telepractice is with children with autism spectrum disorder (ASD) ages 5-12, and children’s age was considered as an influential factor. While previous studies have focused on perceptions, we wanted to know what SLPs are doing in order to build rapport with their clients when using telepractice. We reached out to 223 SLPs and there …

Go to article

An American Pilgrimage: The 1968 Poor People's Campaign Mule Train As Prophetic Social Performance, Cheston M. Bush Jan 2021

An American Pilgrimage: The 1968 Poor People's Campaign Mule Train As Prophetic Social Performance, Cheston M. Bush

Electronic Theses and Dissertations

In late spring of 1968, the Southern Christian Leadership Conference (SCLC) launched a nationwide demonstration known as the Poor People’s Campaign in an effort to overcome poverty. Nine caravans representing people from around the country converged in the Capitol to petition Congress for programs that would broaden opportunities for poor Americans. This work examines the Mississippi contingent of the campaign, the Mule Train caravan, that consisted of roughly 150 people who traveled in 15 covered wagons pulled by about 40 mules. The Mule Train left Marks, Mississippi on May 13 and arrived in Washington, D.C. in time for a June …

Go to article

The Meat Of The Gothic: Animality And Social Justice In United States Fiction And Film Of The Twenty-First Century, Amber Hodge Jan 2021

The Meat Of The Gothic: Animality And Social Justice In United States Fiction And Film Of The Twenty-First Century, Amber Hodge

Electronic Theses and Dissertations

The Meat of the Gothic: Animality and Social Justice in United States Fiction and Film of the Twenty-First Century— situates twenty-first century US gothic narratives in relation to animal studies, even as it illuminates how these narratives interrogate the effects of historic and ongoing global systems of human oppression: slavery, imperialism, and capitalism. Instead of reacting to bias by asserting a claim to a humanity perpetually imbricated in divisions of class, race, and gender, present-day authors and filmmakers create characters who form communities that include nonhuman actors as a means of generating empowerment and critique. My approach to these narratives …

Go to article

Time And Place At Prospect Hill: A Phase-One Survey Of A Historic Plantation, William Bryce Krumcke Jan 2021

Time And Place At Prospect Hill: A Phase-One Survey Of A Historic Plantation, William Bryce Krumcke

Electronic Theses and Dissertations

The goal for this thesis was to conduct the first archaeological research at Prospect Hill plantation and to create a baseline that can be used to understand the spatial layout of the plantation and provide archaeological evidence of the enslaved people who lived there. Prospect Hill is located in southwest Mississippi and was founded in 1808 by Captain Isaac Ross. The archaeological work done at Prospect Hill was a survey of approximately 10 acres that surrounds the main house. After this survey, the artifacts were classified into two categories: chronological and functional. From this analysis, a series of patterns were …

Go to article

Do Bears Prefer The Weak And The Downtrodden? The Effects Of The 52-Week Low And Financial Strength On Short-Seller Behavior, Christopher Alan Miller Jan 2021

Do Bears Prefer The Weak And The Downtrodden? The Effects Of The 52-Week Low And Financial Strength On Short-Seller Behavior, Christopher Alan Miller

Electronic Theses and Dissertations

This dissertation investigates the effects of a company’s financial strength on short-seller behavior around a non-information-producing event. The distance of a stock price to its 52-week high or low does not provide fundamental information, but the price extremes serve as salient price points upon which investors anchor their expectations of future stock performance. Using a large sample of daily short sales data, I investigated the effects of both the proximity to the 52-week low and the financial strength of the underlying company on short-seller behavior. I found that short-selling volume increases as the price nears its 52-week low and that …

Go to article

Using Fmri Bold Imaging To Motion-Correct Associated, Simultaneously Imaged Pet Data, Joseph M. Williamitis Jan 2021

Using Fmri Bold Imaging To Motion-Correct Associated, Simultaneously Imaged Pet Data, Joseph M. Williamitis

Browse all Theses and Dissertations

Because magnetic resonance (MR) and positron emission tomography (PET) scanning sessions last long durations, motion blur during scanning constitutes a problem for clinical interpretation. To counteract this, motion-correction algorithms have been developed to reduce smearing between scan slices of MRI, but these algorithms are not commonplace for PET. This feasibility study determined if applying MRI motion-correction algorithms to simultaneously acquired PET data improved PET signal clarity in specific brain regions. Seven subjects received increasing levels of PET tracers while undergoing two separate simultaneous PET/MRI scans. We modified existing fMRI algorithms to apply them to the accompanying PET data. We hypothesized …

Go to article

Minimally Invasive Repair Of Elongated Chordae Tendineae In The Mitral Valve, Walid Abuhashim, Diana Albaba, Austin Ghiates, Rebecca Leiter, Mary Robakowski Jan 2021

Minimally Invasive Repair Of Elongated Chordae Tendineae In The Mitral Valve, Walid Abuhashim, Diana Albaba, Austin Ghiates, Rebecca Leiter, Mary Robakowski

Williams Honors College, Honors Research Projects

In the United States, about 4 million people have been estimated to suffer from severe mitral valve regurgitation [5]. Due to the high risks involved, about half of those patients are ineligible for surgery to repair the valve, because of their poor health [6]. Elongation of the chordae tendineae has been found to be one of the significant causes of regurgitation. To address this, the team has developed a device called “Chord Fastener”, which will restore proper function to the valve via shortening of the chordae tendineae [1]. Via this shortening mechanism, the device will reduce mitral valve regurgitation and …

Go to article

Modeling Of Excitation In Skeletal Muscle, Sabrina Kinzie Metzger Jan 2021

Modeling Of Excitation In Skeletal Muscle, Sabrina Kinzie Metzger

Browse all Theses and Dissertations

Recent experimental findings in the Rich lab suggest there are important gaps in our understanding of muscle excitability in various disease states. To generate and test hypotheses as well as to determine whether our current understanding of various aspects of muscle excitation can fully explain experimental findings, an accurate model of muscle excitation was needed. Previous studies have modeled excitation of muscle, but in each case, important aspects were omitted. One reason for this is that little effort has been made to accurately simulate muscle action potentials. In this thesis I present progress made towards generation of a model of …

Go to article

Partial Facial Re-Imaging Using Generative Adversarial Networks, Derek Desentz Jan 2021

Partial Facial Re-Imaging Using Generative Adversarial Networks, Derek Desentz

Browse all Theses and Dissertations

Existing facial recognition software relies heavily on using neural networks to extract key facial features to accurately classify known individuals. Some of these key features include the shape, size, and distance between an individual’s eyes, nose, and mouth. When these key features cannot be extracted due to facial coverings, existing applications become inaccurate and unreliable. The accuracy and reliability of these technologies are growing concerns as the facial recognition market continues to grow at an exponential rate. In this thesis, we have developed a web-based application service that is able to take in a partially covered face image and generate …

Go to article

Sediment Nutrient Dynamics In Fondriest Agricultural Settling Pond, Marie Grace Bezold Jan 2021

Sediment Nutrient Dynamics In Fondriest Agricultural Settling Pond, Marie Grace Bezold

Browse all Theses and Dissertations

Excess loading of nitrogen (N) and phosphorus (P) is a serious global problem and has numerous negative impacts on water quality of aquatic ecosystems including eutrophication, harmful algal blooms, and hypoxia. Anthropogenic activities (such as the Haber-Bosch process, burning of fossil fuels, sewage treatment, and manure reuse) have led to excess N loading to aquatic systems. Sediment N dynamics were examined from Oct 2019 – Oct 2020 in an agricultural settling pond connected to a constructed wetland adjacent to an agricultural field. Intact sediment cores were amended with 15N for continuous-flow incubations to measure denitrification and N fixation rates, as …

Go to article

Characterization Of Maize Near-Isogenic Lines With Enhanced Flavonoid Expression To Be Used As Tools In Diet-Health Complexity, Binning Wu, Haotian Chang, Rich Marini, Surinder Chopra, Lavanya Reddivari Jan 2021

Characterization Of Maize Near-Isogenic Lines With Enhanced Flavonoid Expression To Be Used As Tools In Diet-Health Complexity, Binning Wu, Haotian Chang, Rich Marini, Surinder Chopra, Lavanya Reddivari

Department of Food Science Faculty Publications

Increasing incidence of chronic diseases in the 21st century has emphasized the importance of developing crops with enhanced nutritional value. Plant-based diets are associated with reduced incidence of many chronic diseases. The growing population and increased food demand have prioritized the development of high-yielding commercial crop varieties at the expense of natural flavors as well as health-benefiting compounds including polyphenols. Flavonoids are a large subfamily of polyphenols abundant in the plant kingdom with known health-promoting effects, making them a promising trait to be re-introduced into elite lines. Given the vast array of flavonoids and the complexity of plant food metabolome …

Go to article

Creating Awareness Of The Turkey Industry Through Stem-Based Online Curriculum, Elizabeth Simmermeyer, Elizabeth Karcher Jan 2021

Creating Awareness Of The Turkey Industry Through Stem-Based Online Curriculum, Elizabeth Simmermeyer, Elizabeth Karcher

Indiana STEM Education Conference

As the food industry has evolved over the years, consumers have more accessible and convenient outlets to buy groceries, dine in, or carry out. While there are many advantages to this ever-changing industry, a large gap exists in the understanding of food production from farm to fork. Consumer perceptions are influenced beginning at an early age. Education is the solution to bridge this gap between farm to fork; however, there are limited STEM-based agricultural resources available for teachers to implement in their classrooms. Creating these agricultural resources provides teachers the opportunity to share the story of the agricultural industry with …

Go to article

Think Beyond The Literary Canon: The Potential For Young Adult Literature Within A High School Classroom, Megan Mayle Jan 2021

Think Beyond The Literary Canon: The Potential For Young Adult Literature Within A High School Classroom, Megan Mayle

Williams Honors College, Honors Research Projects

This research project will evaluate and build upon existing research on the use of young adult (YA) literature in high school curriculum. The project will include researching what is currently read in high school classrooms, examining studies on the use of YA literature, and presenting examples and models of implementing three major YA novels into high school curriculum. The three novels that will be looked at in-depth are The Hate U Give by Angie Thomas, the Harry Potter series by J.K. Rowling, and Mark Haddon's The Curious Incident of the Dog in the Night-Time. The goal for this research …

Go to article

Analysis Of Modern Barn Design, Gunther Soehnlen Jan 2021

Analysis Of Modern Barn Design, Gunther Soehnlen

Williams Honors College, Honors Research Projects

The agriculture industry is always changing. Barn structures are one of the most important aspects of the agriculture industry. As the agriculture industry changes, so does the design and construction of barns. There are many types of barns, but over the last 300 years four of the most prevalent types have been the Bank Barn, Open Span Truss Barn, Hoop Barn, and Transverse Frame Barn. The Bank Barn and Transverse Frame Barn have been popularly built for over 200 years. The Hoop Barn and the Open Span Truss Barn have been recently introduced to the industry, becoming popular within the …

Go to article

Wetting Transition On 3d-Printed Featured Surface, Hannah Pineault Jan 2021

Wetting Transition On 3d-Printed Featured Surface, Hannah Pineault

Williams Honors College, Honors Research Projects

The primary objective of this research project was to gain a better understanding of surface characteristics to produce a long-lasting superhydrophobic or superhydrophilic surface. In other words, when will a droplet of water remain on top of a featured surface and when does the transition occur to water filling the grooves of the surface? This research focused on how to best fabricate porous structures that would stay completely dry at all times by preventing the liquid from penetrating. In particular, we followed the behaviors of water droplets placed on top of 3-D printed featured surfaces with various geometries and surface …

Go to article

Interactive Virtual Reality Reading Experience, Nathaniel Shetler Jan 2021

Interactive Virtual Reality Reading Experience, Nathaniel Shetler

Williams Honors College, Honors Research Projects

The project is an interactive virtual reality reading experience. The user is able to read a book or story in VR. When certain achievements are reached, such as finishing a chapter, the user is given the opportunity to transport to the environment that they are reading about. This gives the user a great opportunity to interact and learn hands-on with the material they are reading about. For example, if the user is reading about World War I, they will be given the opportunity to transport to the battlefields/trenches in Europe.

Go to article

An Analysis Of A High School American History Textbook, Harris Ong Jan 2021

An Analysis Of A High School American History Textbook, Harris Ong

Williams Honors College, Honors Research Projects

For my honors project I will be examining and analyzing a high school American history textbook. The specific textbook that I will be looking at is _America: Pathways to the Present_ written by Andrew Clayton, Elisabeth Israels Perry, Linda Reed, and Allan M. Winkler. This textbook was published by Prentice Hall in the year 2003. I will be analyzing the textbook for it’s historical accuracy, checking that the events covered in the textbook tell the actual story of what really happened during that event. I will determine the textbook completely covers incidents that happened during big events. I will also …

Go to article

Effects Of Chickpea Flour Replacement On Physical And Sensory Characteristics Of Brownies, Madeline Large Jan 2021

Effects Of Chickpea Flour Replacement On Physical And Sensory Characteristics Of Brownies, Madeline Large

Williams Honors College, Honors Research Projects

Due to health concerns, many consumers have started to incorporate nutrient-dense functional foods into their everyday diet. Chickpeas (Cicer arietinum L.) are an important globally consumed legume. They are utilized in foods due to their higher protein quality compared to other types of pulses grown around the world as they contain all the essential amino acids. Another important factor is that it can be used as a supplement for protein for vegetarians and as a grain substitute for consumers who have celiac disease and cannot consume gluten. The main purpose of this study was to determine the effects of complete …

Go to article

First Prev Next Last