Digital Commons Network^™

Electrodeposition From A Graphene Bath: A Sustainable Copper Composite Alloy In A Graphene Matrix, Hayley Richardson, Charles Bopp, Bao Ha, Reeba Thomas, Kalathur S.V. Santhanam

Articles

The leaching effect of metals has led to the introduction of government regulations for the safety of the environment and humans. This has led to the search for new alloys with long-lasting sustainability. Herein, we wish to report a new brass alloy containing carbon with a remarkable sustainability produced by electrodeposition from a graphene quantum dots bath. The electrochemical measurements were carried out using cyclic voltammetry, potentiodynamic analysis, and Tafel measurements, and the deposits were characterized by X-ray fluorescence spectroscopy (XRF), Raman imaging, X-ray diffraction (XRD), atomic force microscopy (AFM), and scanning electron microscopy (SEM) to understand the surface morphology …

Mathematical Model Of The Role Of Asymptomatic Infection In Outbreaks Of Some Emerging Pathogens, Nourridine Siewe, Bradford Greening Jr., Nina H. Fefferman

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Preparation for outbreaks of emerging infectious diseases is often predicated on beliefs that we will be able to understand the epidemiological nature of an outbreak early into its inception. However, since many rare emerging diseases exhibit different epidemiological behaviors from outbreak to outbreak, early and accurate estimation of the epidemiological situation may not be straightforward in all cases. Previous studies have proposed considering the role of active asymptomatic infections co-emerging and co-circulating as part of the process of emergence of a novel pathogen. Thus far, consideration of the role of asymptomatic infections in emerging disease dynamics have usually avoided considering …

On The Generation, Structure, And Semantics Of Grammar Patterns In Source Code Identifiers, Christian D. Newman,, Reem S. Alsuhaibani, Michael J. Decker, Anthony Peruma, Dishant Kaushik, Mohamed Wiem Mkaouer, Emily Hill

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Identifier names are the atoms of program comprehension. Weak identifier names decrease developer productivity and degrade the performance of automated approaches that leverage identifier names in source code analysis; threatening many of the advantages which stand to be gained from advances in artificial intelligence and machine learning. Therefore, it is vital to support developers in naming and renaming identifiers. In this paper, we extend our prior work, which studies the primary method through which names evolve: rename refactorings. In our prior work, we contextualize rename changes by examining commit messages and other refactorings. In this extension, we further consider data …

Thermoformed Containers Based On Starch And Starch/Coffee Waste Biochar Composites, Carlos Diaz, Rahul Ketan Shah, Tyler Evans, Thomas A. Trabold, Kathleen Draper

Articles

Biodegradable containers support zero-waste initiatives when alternative end-of-life scenarios are available (e.g., composting, bio digestion). Thermoplastic starch (TPS) has emerged as a readily biodegradable and inexpensive biomaterial that can replace traditional plastics in applications such as food service ware and packaging. This study has two aims. First, demonstrate the thermoformability of starch/polycaprolactone (PCL) as a thermoplastic material with varying starch loadings. Second, incorporate biochar as a sustainable filler that can potentially lower the cost and enhance compostability. Biochar is a stable form of carbon produced by thermochemical conversion of organic biomass, such as food waste, and its incorporation into consumer …

Brightness Matching In Optical See-Through Augmented Reality, Michael Murdoch

Articles

A visual experiment using a beam-splitter-based optical see-through augmented reality (OST-AR) setup tested the effect of the size and alignment of AR overlays with a brightness-matching task using physical cubes. Results indicate that more luminance is required whenARoverlays are oversized with respect to the cubes, showing that observers discount theARoverlay to a greater extent when it is more obviously a transparent layer. This is not explained by conventional color appearance modeling but supports an AR-specific model based on foreground-background discounting. The findings and model will help determine parameters for creating convincingARmanipulation of realworld objects.

Eventually Periodic Solutions Of Single Neuron Model, Inese Bula, Michael A. Radin

Articles

In this paper, we consider a non-autonomous piecewise linear difference equation that describes a discrete version of a single neuron model with a periodic (period two and period three) internal decay rate. We investigated the periodic behavior of solutions relative to the periodic internal decay rate in our previous papers. Our goal is to prove that this model contains a large quantity of initial conditions that generate eventually periodic solutions. We will show that only periodic solutions and eventually periodic solutions exist in several cases.

An Examination Of Enhanced Atmospheric Methane Detection Methods For Predicting Performance Of A Novel Multiband Uncooled Radiometer Imager, Cody M. Webber, John Kerekes

Articles

To evaluate the potential for a new uncooled infrared radiometer imager to detect enhanced atmospheric levels of methane, three different analysis methods were examined. A single-pixel brightness temperature to noise-equivalent delta temperature (NEdT) comparison study performed using data simulated from MODTRAN6 revealed that a single thermal band centered on the 7.68 µm methane feature leads to a detectable brightness temperature difference exceeding the sensor noise level for a plume of about 17 ppm at ambient atmospheric temperature compared to an ambient plume with no enhanced methane present. Application of a normalized differential methane index method, a novel approach for methane …

Uv Photo-Oxidation Of Polybenzimidazole (Pbi), Devon Shedden, Kristen M. Atkinson, Ibrahim Cisse, Shin Lutondo, Tyshawn Roundtree, Michilena Teixeira, Joel Shertok, Michael Mehan, Gregory K. Thompson, Surendra K. Gupta, Gerald A. Takacs

Articles

Since polybenzimidazole (PBI) is often used in the aerospace industry and in high temperature fuel cells, this research investigated the surface modification of PBI film with 253.7 and 184.9 nm UV photo-oxidation. As observed by X-ray photoelectron spectroscopy (XPS), the oxygen concentration on the surface increased up to a saturation level of 20.2 ± 0.7 at %. With increasing treatment time, there were significant decreases in the concentrations of C-C sp2 and C=N groups and increases in the concentration of C=O, O-C=O, O-(C=O)-O, C-N, N-O, and N-C=O containing moieties due to 253.7 nm photo-oxidation of the aromatic groups of PBI …

An Examination Of Enhanced Atmospheric Methane Detection Methods For Predicting Performance Of A Novel Multiband Uncooled Radiometer Imager, Cody M. Webber, John P. Kerekes

Articles

To evaluate the potential for a new uncooled infrared radiometer imager to detect enhanced atmospheric levels of methane, three different analysis methods were examined. A single-pixel brightness temperature to noise-equivalent delta temperature (NEdT) comparison study performed using data simulated from MODTRAN6 revealed that a single thermal band centered on the 7.68 µm methane feature leads to a detectable brightness temperature difference exceeding the sensor noise level for a plume of about 17 ppm at ambient atmospheric temperature compared to an ambient plume with no enhanced methane present. Application of a normalized differential methane index method, a novel approach for methane …

Study On The Influence Of Road Geometry On Vehicle Lateral Instability, Yanna Yin, Huiying Wen, Lu Sun, Wei Hou

Articles

According to the accident analysis of vehicles in the curve, the skidding, rollover, and lateral drift of vehicles are determined as means to evaluate the lateral stability of vehicles. -e utility truck of rear-wheel drive (RWD) is researched, which is high accident rate. Human-vehicle-road simulation models are established by CarSim. -rough the orthogonal experiment method, the effects of different road geometries, speed, and interaction factors between road geometries on vehicle lateral stability are studied. In this paper, skidding risk of the vehicle is characterized by the Side-way Force Coefficient (SFC). Rollover risk of the vehicle is characterized by lateral acceleration …

Aesthetics, Culture, Power Critical Deaf Pedagogy And Asl Video-Publications As Resistance-To-Audism In Deaf Education And Research, Michael E. Skyer, Laura Cochell

Articles

From a critical pedagogy standpoint, we examined a bilingual (American Sign Language [ASL] and English) video-publication titled “Seizing Academic Power.” The video-publication explores interactions of power and knowledge in deaf education and research and proposes tools to subvert ableism and deficit ideologies within them. By centralizing multiple visuospatial modalities, the video-publication’s medium is also its message. Qualitative data were produced and analyzed via structured coding cycles then interpreted through two theoretical frameworks focused on culture and aesthetics in critical pedagogy. Our analysis highlights conflicts at the nexus of ontology, epistemology, axiology, and methodology of deaf education and research. Findings reveal …

Minecrafting Bar Mitzvah: Two Rabbis Negotiating And Cultivating Learner-Driven Inclusion Through New Media., Owen Gottlieb

Articles

In 2013, a boy with special needs used the video game Minecraft to deliver the sermon at his bar mitzvah at a Reform synagogue, an apparently unique ritual phenomenon to this day. Using a narrative inquiry approach, this article examines two rabbis’ negotiations with new media, leading up to, during, and upon reflection after the event. The article explores acceptance, innovation, and validation of new media in religious practice, drawing on Campbell’s (2010) framework for negotiation of new media in religious communities. Clergy biography, philosophy, and institutional context all impact the negotiations with new media. By providing context of a …

Children’S Ethno-National Flag Categories In Three Divided Societies, Edona Maloku, Jocelyn B. Dautel, Ana Tomovska Misoska, Laura K. Taylor

Articles

Flags are conceptual representations that can prime nationalism and allegiance to one’s group. Investigating children’s understanding of conflict-related ethno-national flags in divided societies sheds light on the development of national categories. We explored the development of children’s awareness of, and preferences for, ethno-national flags in Northern Ireland, Kosovo, and the Republic of North Macedonia. Children displayed early categorization of, and ingroup preferences for, ethno-national flags. By middle-childhood, children’s conflict-related social categories shaped systematic predictions about other’s group-based preferences for flags. Children of minority-status groups demonstrated more accurate flag categorization and were more likely to accurately infer others’ flag preferences. While …

Exploration Of The Neisseria Resistome Reveals Resistance Mechanisms In Commensals That May Be Acquired By N. Gonorrhoeae Through Horizontal Gene Transfer, Michael A. Fiore, Jordan C. Raisman, Narayan H. Wong, André O. Hudson, Crista B. Wadsworth

Articles

Nonpathogenic Neisseria transfer mutations encoding antibiotic resistance to their pathogenic relative Neisseria gonorrhoeae. However, the resistance genotypes and subsequent phenotypes of nonpathogens within the genus have been described infrequently. Here, we characterize the minimum inhibitory concentrations (MICs) of a panel of Neisseria (n = 26)—including several commensal species—to a suite of diverse antibiotics. We furthermore use whole genome sequencing and the Comprehensive Antibiotic Resistance Database Resistance Gene Identifier (RGI) platform to predict putative resistance-encoding mutations. Resistant isolates to all tested antimicrobials including penicillin (n = 5/26), ceftriaxone (n = 2/26), cefixime (n = 3/26), tetracycline (n = 10/26), azithromycin (n …

Simulation Of Internet Of Things Water Management For Efficient Rice Irrigation In Rwanda, Peace Bamurigire, Anthony Vodacek, Andras Valko, Said Rutabayiro Ngoga

Articles

The central role of water access for agriculture is a clear challenge anywhere in the world and particularly in areas with significant seasonal variation in rainfall such as in Eastern and Central Africa. The combination of modern sensor technologies, the Internet, and advanced irrigation equipment combined in an Internet of Things (IoT) approach allow a relatively precise control of agricultural irrigation and creating the opportunity for high efficiency of water use for agricultural demands. This IoT approach can thereby increase the resilience of agricultural systems in the face of complex demands for water use. Most previous works on agricultural IoT …

Practical Model For Improved Classification Of Trace Chemical Residues On Surfaces In Active Spectroscopic Measurements, Cara P. Murphy, John Kerekes, Derek Wood, Anish Goyal

Articles

Trace chemical detection and classification in stand-off reflection-based spectro- scopic data is challenging due to the variability of measured data and the lack of physics-based models that can accurately predict spectra. Most available models assume that the chemical takes the form of spherical particles or uniform thin films. A more realistic chemical presentation that could be encountered is that of a nonuniform chemical film that is deposited after evaporation of the solvent that contained the chemical. We present an improved signature model for this type of solid film. The proposed model, called sparse transfer matrix, includes a log-normal distribution of …

Practical Model For Improved Classification Of Trace Chemical Residues On Surfaces In Active Spectroscopic Measurements, Cara P. Murphy, John P. Kerekes, Derek A. Wood, Anish K. Goyal

Articles

No abstract provided.

Chromatic Vertex Folkman Numbers, Xiaodong Xu, Meilian Liang, Stanislaw Radziszowski

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For graph G and integers a1 > · · · > ar > 2, we write G → (a1, · · · , ar) v if and only if for every r-coloring of the vertex set V (G) there exists a monochromatic Kai in G for some color i ∈ {1, · · · , r}. The vertex Folkman number Fv(a1, · · · , ar; s) is defined as the smallest integer n for which there exists a Ks-free graph G of order n such that G → (a1, · · · , ar) v . It is well known that if …

Densitometry, Robert Y. Chung

Articles

This chapter covers how a densitometer works. It also covers density-de-rived values and densitometry applications, including pressrun analysis. After reading this chapter, one should know that a densitometer measures light absorption due to the presence of colorants, such as ink and toner. Being sensitive to differences in dark shades, a densitometer is good at measuring colorant amounts, which makes it an ideal tool for printing-process control.

From "Printing-Process Control and Standardization"

A Definition Of “Regular Meals” Driven By Dietary Quality Supports A Pragmatic Schedule, Barbara A. Lohse, Kathryn Faulring, Diane C. Mitchell, Leslie Cunningham-Sabo

Articles

Public health guidelines advise eating regular meals without defining “regular.” This study constructed a meaning for “regular” meals congruent with dietary quality. Parents of 4th grade youth in a school-based intervention (Clinicaltrials.gov NCT02491294) completed three, ASA24 online 24-h dietary recalls. Differences in time of intake across days for breakfasts, lunches, dinners were categorized with consistency denoted as always, often/sometimes or rarely/never and assigned values of 3, 2 or 1, respectively. Meal-specific values were summed to form mealtime regularity scores (mReg) ranging from 3 (low) to 9. Healthy eating index (HEI) scores were compared to mReg controlling for weekday/weekend recall pattern. …

Designing Analog Learning Games: Genre Affordances, Limitations And Multi-Game Approaches, Owen Gottlieb, Ian Schreiber

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This chapter explores what the authors discovered about analog games and game design during the many iterative processes that have led to the Lost & Found series, and how they found certain constraints and affordances (that which an artifact assists, promotes or allows) provided by the boardgame genre. Some findings were counter-intuitive. What choices would allow for the modeling of complex systems, such as legal and economic systems? What choices would allow for gameplay within the time of a class-period? What mechanics could promote discussions of tradeoff decisions? If players are expending too much cognition on arithmetic strategizing, could that …

Provost’S Learning Innovation Grant (Plig) For 2019, Esa M. Rantanen

Articles

This grant allowed for a redesign of the PSYC 714 “Graduate Engineering Psychology” course, offered by the Department of Psychology about every two years since 2013, for online delivery. The grant was awarded on March 29, 2019. Full Project Plan report was submitted on Aug. 16, 2019. The majority of the course redesign work was completed during the fall semester 2019 (2191), including creation of several software programs to support the lab exercises designed for the course. The Preliminary Findings report was submitted on Jan. 10, 2020, and the PSYC 714 course was offered online in the spring semester of …

An Online Interactive Video Vignette That Helps Students Learn Key Concepts Of Fermentation And Respiration, Jean A. Cardinale, Dina L. Newman, L. Kate Wright

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Topics related to energy transformation and metabolism are important parts of an undergraduate biology curriculum, but these are also topics that students traditionally struggle with. To address this, we have created a short online Interactive Video Vignette (IVV) called To Ferment or Not to Ferment: That is the Question. This IVV is designed to help students learn important ideas related to cellular respiration and metabolism. Students in various courses across four institutions were assigned the IVV as an out-of-class preinstruction homework assignment. To test the effectiveness of this IVV on student learning, we collected and analyzed data from questions embedded …

Student Observations Of Postsecondary Classroom Instruction: Accessibility Challenges And Collaborative Feedback., Yasmine R. Jassal, Stephanie W. Cawthon, Sara Schley

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For deaf students, accessible classroom design is often provided through external services such as interpreters or speech-to-text providers. An approach based in Universal Design for Learning (UDL), though, seeks to engage students in learning by creating classroom spaces with accessibility integrated into the pedagogical approach. Realizing these goals requires participation from one of the most valuable, yet underused, resources: the students themselves. To that end, this paper examines a student-faculty collaborative approach to increasing accessibility for deaf students in postsecondary classrooms. Results of this study suggest that student observers are able to provide concrete and constructive feedback on strategies to …

Sex Modifies The Association Between The Clock Variant Rs1801260 And Bmi In School-Age Children, Ying Meng, Barbara Lohse, Leslie Cunningham-Sabo

Articles

Disruption of circadian rhythms and variations in the FTO gene may interfere with energy homeostasis and play a role in the development of obesity. The current study assessed the association of common polymorphisms in the CLOCK and FTO genes with standardized body mass index scores (BMI z-scores) and their potential modification of the impact of a culinary nutrition and physical activity intervention in school-age children. Anthropometric measurements were collected in 121 children at the baseline and one-year follow-up of a controlled trial of a school-based culinary nutrition and physical activity intervention. Genotypes of the CLOCK polymorphism (rs1801260) and the FTO …

Interactive Video Vignettes (Ivvs) To Help Students Learn Genetics Concepts, Dina L. Newman, Jean Cardinale, L Kate Wright

Articles

any video resources exist to teach Mendelian genetics, but most consist of passive delivery of information rather than active construction of knowledge by users. We have created two interactive video vignettes (IVVs) that can be used together or separately to introduce students to core concepts of genetics, using principles of active learning (e.g., elicit-confront-resolve, directed feedback, reflection). These online resources are free and can be assigned as homework for students to complete outside of class. Each IVV features a realistic scenario of undergraduate students investigating genetic phenomena by collecting and analyzing data. During the IVVs, the user is integrated into …

Using Information Communications Technologies To Implement Universal Design For Learning, David Banes, Anne Hayes, Christopher Kurz, Raja Kashalnagar

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The purpose of this paper is to assist Ministries of Education, their donors and partners, Disabled Persons Organizations (DPOs), and the practitioner community funded by and working with USAID to select, pilot, and (as appropriate) scale up ICT4E solutions to facilitate the implementation of Universal Design for Learning (UDL), with a particular emphasis on supporting students with disabilities to acquire literacy and numeracy skills. The paper focuses primarily on how technology can support foundational skills acquisition for students with disabilities, while also explaining when, why, and how technologies that assist students with disabilities can, in some applications, have positive impacts …

Assessment Of Dehydration As A Commercial-Scale Food Waste Valorization Strategy, Jon T. Schroeder, Ava L. Labuzetta, Thomas A. Trabold

Articles

Using a commercially available dehydration unit, this study aimed to valorize various food waste streams from different sources in the Rochester, New York area. Dehydration of the food waste collected for the study helped reduce the weight of the feedstock by 70–90%, as the incoming waste streams were relatively wet. The output was materially characterized against end uses such as cattle feed, fish feed, and compost. The results demonstrated that, other than fertilizer, the remaining five end uses (compost, fish feed, cattle feed, pyrolysis, and pelletized fuel) were potentially compatible with varying waste feedstocks based on the parameters analyzed. Fish …

Cell Replacement Strategies For Lithium Ion Battery Packs, Nenad G. Nenadic, Thomas A. Trabold, Michael G. Thurston

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The economic value of high-capacity battery systems, being used in a wide variety of automotive and energy storage applications, is strongly affected by the duration of their service lifetime. Because many battery systems now feature a very large number of individual cells, it is necessary to understand how cell-to-cell interactions can affect durability, and how to best replace poorly performing cells to extend the lifetime of the entire battery pack. This paper first examines the baseline results of aging individual cells, then aging of cells in a representative 3S3P battery pack, and compares them to the results of repaired packs. …

A Sentence Need Not Begin With A Capital Letter, Jakob Patekar

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This paper examines the challenge of starting a sentence with a proper noun or an abbreviation that is written with an initial lowercase letter (e.g. iPhone, danah boyd, pH). Traditionally, placing such words at the beginning of a sentence would be avoided, but this limits one's syntax and style. Hence, the aim of this paper is to explore the rules and practices of writing certain proper nouns and abbreviations with a lowercase letter and starting a sentence with such words in Croatian and English. Therefore, we reviewed the rules and guidelines in orthography handbooks and style guides, analyzed the corpora …