Digital Commons Network^™

China's Important 2060 Carbon Neutrality Goal, Jason Jasper, Kimberly Nehls Ph.D.

Undergraduate Research Symposium Posters

Climate Change is a serious threat to global security and well-being. Many developed nations and some developing nations have made promises to become carbon-neutral (net zero emissions), or carbon-free by a specified time frame. China is a developing nation with high growth and has set a goal to be carbon-neutral by 2060. This study aims to determine how much China would need to reduce CO2 emissions to achieve this goal, and how it compares to other nations, using the most current data, and mathematical analysis. China produces the most CO2 in the world, almost twice as much as the United …

University Philharmonic Orchestra & University Band Program, Nancy Conley, Hannah Rudy

Bailey School of Music Concert Programs

Program for University Philharmonic Orchestra & University Band

Lignin, Sugar, And Furan Production Of Industrial Hemp Biomass Via An Integrated Process, Jikai Zhao, Jason Griffin, Kraig Roozeboom, Juhee Lee, Donghai Wang

School of Earth, Environmental, & Marine Sciences Faculty Publications

Traditional pretreatment of lignocellulosic biomass is often accompanied by washing and disposal of wastewater, which leads to overuse of water and loss of by-products. The objectives of this study were to validate the potential of an acid-base integrated process for simultaneous sugars, furans, and lignin production without washing and wastewater discarding. The difference in conversion performance among different biomass resources was also demonstrated. Parallel acetic acid (HOAc, pH = 2.25) and sodium hydroxide (NaOH, pH = 13.46) pretreatments followed by solid and liquid integration were applied to four genotypes of industrial hemp (Cannabis sativa L.) biomass that were harvested …

A Quantitative Exploration Of Strategies To Reduce Fatigue Among Nurses, Karen R. Cochran

Dissertations

The work environment of nurses places them at high risk of fatigue. The literature suggests a high prevalence of fatigue exists among nurses. Fatigue leads to reduced cognitive and physical abilities increasing the risk for personal injury and patient care errors. Nurse fatigue should be mitigated in an effort to improve safety and quality in healthcare organizations. The purpose of this study was to describe nurses' self- perceptions of fatigue and to examine nurses' willingness to engage in specific fatigue countermeasures within the workplace. Data were collected through an anonymous Qualtrics survey. A sample of 279 nurses completed the survey. …

All-Sky Search For Long-Duration Gravitational-Wave Bursts In The Third Advanced Ligo And Advanced Virgo Run, Ligo Scientific Collaboration, Virgo Collaboration, Kagra Collaboration, Tiffany Z. Summerscales

Faculty Publications

After the detection of gravitational waves from compact binary coalescences, the search for transient gravitational-wave signals with less well-defined waveforms for which matched filtering is not well suited is one of the frontiers for gravitational-wave astronomy. Broadly classified into “short” ≲1  s and “long” ≳1  s duration signals, these signals are expected from a variety of astrophysical processes, including non-axisymmetric deformations in magnetars or eccentric binary black hole coalescences. In this work, we present a search for long-duration gravitational-wave transients from Advanced LIGO and Advanced Virgo’s third observing run from April 2019 to March 2020. For this search, we use …

Low Gravity Natural Convection And Pool Boiling Predictions, Ashley Carol Milligan

Electronic Theses and Dissertations Archive

Cryogenic fluids are used in various fields, such as biomedical technology, food transportation, and aerospace. Liquid hydrogen and oxygen are cryogenic fluids that can act as energy-dense fuels for long-term, large payload space flight. Much of the resulting research in long-duration cryogenic fluid storage has focused on zero-boil-off tank pressure control in low gravity environments. The high cost of testing these systems in low gravity has created a need to develop accurate models of the behavior of fluids in these environments. Simulaitons of tank pressure control require accurate models of evaporation and condensation phase change. Recent advancements in commercial fluid …

Reducing Kidney Discard With Artificial Intelligence Decision Support: The Need For A Transdisciplinary Systems Approach, Richard Threlkeld, Lirim Ashiku, Casey I. Canfield, Daniel Burton Shank, Mark A. Schnitzler, Krista L. Lentine, David A. Axelrod, Anil Choudary Reddy Battineni, Henry Randall, Cihan H. Dagli

Engineering Management and Systems Engineering Faculty Research & Creative Works

Purpose of Review: A transdisciplinary systems approach to the design of an artificial intelligence (AI) decision support system can more effectively address the limitations of AI systems. By incorporating stakeholder input early in the process, the final product is more likely to improve decision-making and effectively reduce kidney discard.

Recent Findings: Kidney discard is a complex problem that will require increased coordination between transplant stakeholders. An AI decision support system has significant potential, but there are challenges associated with overfitting, poor explainability, and inadequate trust. A transdisciplinary approach provides a holistic perspective that incorporates expertise from engineering, social science, and …

The House Of Wisdom As A Library And Center Of Knowledge, Abdillah Arif Nasution, Aam Slamet Rusydiana, Isfandayani Isfandayani, Eva Misfah Bayuni, Dwi Ratna Kartikawati, Ihsanul Ihwan

Library Philosophy and Practice (e-journal)

The heyday of Islam was marked by the rapid development of Islamic science, culture, and education. This rapid development is supported by the existence of institutions that accommodate these developments. At that time, scientific institutions were established as learning science, culture, and Islamic education. Ibn Killis was a figure and pioneer of the development of education in the Fatimid Caliphate in Egypt. He founded a university and spent thousands of dinars per month to finance it. One of the most important foundations built during the Fatimid period was the construction of Dar al-Hikmah (The house of wisdom) or Dar al-'Ilm …

The Profound Photophysical Effects Of Organic Chromophore Connectivity And Coupling, David J. Walwark Jr

Nanoscience and Microsystems ETDs

Through-bond and through-space interactions between chromophores are shown to have wide-ranging effects on photophysical outcomes upon light absorption in organic molecules. In collapsed poly(3-hexylthiophene), through-space coupling creates hybrid chromophores that act as energy sinks for nearby excitons and favorable sites for molecular oxygen to dock. Upon excitation with visible light the highly-coupled chromophores react with the docked oxygen and subsequently do not quench nearby excitons as efficiently. In tetramer arrays of perylene diimide chromophores the central moiety through-bond connectivity is synthesized in two variants which exhibit vastly different single-molecule blinking behavior and theoretically-predicted electronic transition character. In the more-connected tetramer …

Silica Sol-Gel Control With High Voltage Contactless Electrodes, Jonathan C. Hebert

Nanoscience and Microsystems ETDs

High Voltage Contactless Electrodes (HVE) non-evasively modulates silica sol-gel reactions by redistributing charge in solution. HVE induces formation of local neutral band (LNB) strata (pseudo interfacial surfaces) where the gradient of potential is zero ∇𝜓𝜓=0. HVE LNB shape corresponds to solubility and ultimately sol-gel form. HVE silica sol-gel control works by localizing pH and creating conditions where silanol polymerization is biform; condensation by protonation (cathodic), or by deprotonation (anodic). Steric modified Poisson-Boltzmann equation is used to develop a theory on HVE control of silica sol-gel formation and a nucleate potential functional of potential 𝜓𝜓. Technologies developed during this research are …

The Birth And Incision History Of The San Juan River In The Past 5 Ma, Micael T. Albonico

Earth and Planetary Sciences ETDs

This study addresses the evolution of the San Juan River system and its confluence with the Colorado River, ~ 100 km above the regionally important Lees Ferry knickzone. The San Juan River is a 600-km-long continental-scale tributary of the Colorado River. From its headwaters in the San Juan Mountains in Colorado, the San Juan River flows across the Colorado Plateau, and into the Colorado River upstream of Grand Canyon. Published apatite fission track and apatite (U-Th)/He thermochronologic data show that rocks in Marble Canyon, as well as in middle and upper reaches of the San Juan River, were >75 °C …

Covering By Homothets And Illuminating Convex Bodies, Alexey Glazyrin

School of Mathematical & Statistical Sciences Faculty Publications

The paper is devoted to coverings by translative homothets and illuminations of convex bodies. For a given positive number α and a convex body B, gα⁡(B) is the infimum of α-powers of finitely many homothety coefficients less than 1 such that there is a covering of B by translative homothets with these coefficients. hα⁡(B) is the minimal number of directions such that the boundary of B can be illuminated by this number of directions except for a subset whose Hausdorff dimension is less than α. In this paper, we prove that gα⁡(B)≤hα⁡(B), find upper and lower bounds for both numbers, …

Heat Transfer Modelling Of Carbon Nanotube Reinforced Composites, Yuan Fang, Long Yuan Li, Dassekpo J-B Mawulé, Sung Hwan Jang

School of Engineering, Computing and Mathematics

n this paper an analytical prediction model for the heat transfer analysis of two-phase composite materials is developed. Formulations for the effective density, effective specific heat and effective thermal conductivity of the composite materials are derived. The present model considers not only the effect of interfacial thermal resistance between CNTs and polymer matrix but also the influence of fibre aspect ratio of CNTs on the effective thermal conductivity of the composites. The validation of the model is also provided by using available experimental data to demonstrate the appropriateness and reliability of the present model.

Improving Search Engine Performance Through Dynamic Caching, C Gutierrez-Soto, Ma Palomino, E Roa, P Galdames

School of Engineering, Computing and Mathematics

No abstract provided.

Stolon Growth And Its Morphological Components In White Clover (Trifolium Repens L.) Cultivars, Omar Scheneiter, E. M. Pagano

IGC Proceedings (1977-2023)

A trial was performed to study the seasonal changes in stolon growth and its morphological components in four white clover cultivars, in the north of Buenos Aires Province, in Argentina. Stolons were tagged in four seasonal measurements periods per year, during two consecutive years. Leaf, stolon and flowerheads weights were recorded at regular intervals in each measurement period and total stolon growth was calculated. Differences among cultivars were found in stolon growth and its morphological components in most of the measurement periods. In spring and summer, differences among cultivars in stolon growth were related to flowering quantity and earliness, and …

Dry Matter Production Of Shoots And Root Density Of Two Cultivars Of Lablab Purpureus (L.) Sweet, L. R. De A. Rodrigues, T. J. D. Rodrigues, A. K. B. Ramos, D. G. De Quadros

IGC Proceedings (1977-2023)

This experiment was conducted in green house conditions to evaluate the DM accumulation in the shoots and in the roots of two cultivars of Lablab purpureus (L.) Sweet. A 2x3 factorial (two cultivars and three evaluation dates) was conducted according to a randomized complete block design with four replications, being the cultivars Highworth and Rongai evaluated at 42, 56, and 70 days after seedling emergence (DASE). The results indicated that the cvs. Highworth and Rongai have the same pattern of DM accumulation in the shoots. In the upper layer of the soil (0-0.20 m) it was found 38.83% and 43.64% …

Yellow-Flowered Lucerne (Medicago Falcata L.) - A Potential Forage Legume For The North, T. Mela, H. Ihamäki, M. Matilainen

IGC Proceedings (1977-2023)

The suitability of yellow-flowered lucerne (Medicago falcata L.) for forage production under the northern conditions was studied in a mixture sward with timothy (Phleum pratense L.) in field trials in South Finland for four years from 1995 to 1998. Through the first three winters lucerne stayed unharmed. In June and July lucerne grew vigorously, but in August little. The total seasonal yields were highest in the second and the third year of harvesting, up to 10 t DM ha^-1. In the winter 1997-1998 , winter damages killed 21 to 38 % of lucerne plants, and resulted …

Role Of White Clover In The Improvement Of Economical Efficiency Of Feeds From Grasslands, P. Goliñski

IGC Proceedings (1977-2023)

The aim of the research was to analyse the role played by white clover in the improvement of economical efficiency of feeds obtained from permanent grasslands. The influence of the proportion of white clover in the pasture sward on unit production costs of yield, energy and crude protein and the profit threshold in milk production was analysed taking into account three white clover cultivars, nitrogen fertilisation, irrigation and overdrilling. The investigation procedures employed the author’s own calculation models elaborated in optimisation programs based on production conditions found in dairy farms in the region of Wielkopolska. It was proved that the …

Sexuality: The Empathetic Liberator, Joseph Adams

Student Research Symposium (SRS)

When people think of "exploring sexuality," countless people associate the words with feelings of fear, shame, and guilt. Many people find their religious views cause the described feelings. For others, it may be the cultural messages received concerning sex that cause these feelings. Though we cannot change home and societal conditions, we can reform the one place adolescents can learn more about sex: sexual education. The Teen Pregnancy Prevention Program (TPPP) and the Personal Responsibility Education Program (PREP) are scientifically proven to increase safer sex and prevent unwanted pregnancy. Research suggests that these federally funded programs disregard teenagers' voices when …

Statistical Analysis Of Hispanic Voters’ Practices In Florida, Kamila Soto-Ortiz

Student Research Symposium (SRS)

The Hispanic population is composed of those that identify with a “Spanish-speaking background and trace their origin or descent from…Spanish-speaking countries.” This community is a growing one in the state of Florida. As of 2019, Hispanics make 26% of the state’s population, making them a key demographic in Floridian elections. Ergo, understanding Hispanic voters’ behavior in Florida is crucial for future elections. For starters, certain social factors have been related to voter behavior. The factors considered in this project are the voter’s generation, zip code population density, zip code income and Hispanic group in relation to their voter activity and …

Flutter Stability Analysis Of An Aircraft Wing As A Function Of Damping Ratio, Daniel De La Pena Jimenez

Student Research Symposium (SRS)

This report provides insight into flutter stability analysis as a function of damping ratio. Flutter, an unstable self-excited vibration in which the structure extracts energy from the air stream and often results in catastrophic structural failure, is analyzed as dynamic instability, which may eventually result in stall or buffeting conditions or classical bending and torsion coupling actions. These couplings occur when the aerodynamic forces associated with motion in two modes of vibration cause the modes to couple in an unfavorable manner. The characteristic equation will be analyzed and derived in order to study stability and its relationship with the damping …

Determinants Of The Switching Of Initial Majors Among Undergraduate Students, Elif M. Cankaya, Kyle Garber

Student Research Symposium (SRS)

Undergraduate students make an important decision when they select a major to enter a field at the start of their academic education, and eventually a career (Porter & Umbach, 2006). After declaring their major, however, switching away from the initially declared major is quite common among students in science, technology, engineering, and mathematics (STEM) fields. Given that STEM fields play an essential role in a nation’s economy by promoting innovation and advancing technological developments, detecting factors that motivate students to switch in or out of STEM fields calls for attention. The present study aims to investigate factors that may affect …

Evaluating The Variable Stride Algorithm For Identifying Diabetic Retinopathy, Brian Danaher, Matthew Brown, Ying Zheng

Student Research Symposium (SRS)

An experiment was performed to investigate an alternative pooling method - Variable Stride (VS) - for use in convolutional neural networks. Three VS methods were compared to Maxpool and Avgpool in three different network configurations tasked with classifying diabetic retinopathy images between healthy retinas and retinas with advanced retinopathy. Each combination of network structure and pooling method was run multiple times, and the AUCs, losses, accuracies, as well as the training speed of each run were all collected. Two-tailed t-tests were then run on the prior metrics to quantify the relative performance of each pooling method in each scenario. It …

Cryptocurrency Price Predictions Using High Performance Computing, Marissa Murphy, Naomi Rodriguez, Aaron Morgado, Mason Gawler

Student Research Symposium (SRS)

Digital currency has recently gained popularity as it has become increasingly dependent on computers and the Internet. New forms of currency have been constantly evolving over the past few years, namely cryptocurrency. Virtual forms of currency have open new doors within the software industry in finance, data storage, and data collection. Cryptocurrency (crypto) is very volatile in terms of market value, which carries a host of unknowns that make it difficult to predict and analyze the future prices of crypto. However, cryptocurrency behaves similarly to stocks, which allows for the use of linear regression models to make predictions about price …

Biological Validation Of A Microgravity Analog For Bacteria And Cell Cultures, Collin R. Topolski, Hugo Castillo, Eduardo Divo

Student Research Symposium (SRS)

With the future of long duration spaceflight missions looking to expand from the International Space Station (ISS) to deep space, it must be ensured that all critical systems, living and non-living, are thoroughly developed before humans begin the extended voyage. As we continue to unravel the effects of microgravity on cells, more questions arise on the molecular and cellular components and processes that sense and react to lowered gravity conditions. We have developed a microgravity analog that could simulate the effects of reduced gravity on cells and that could be maintained for a period of time long enough to observe …

Image-Based Microbiome Profiling Differentiates Gut Microbial Metabolic States, Sarwesh Rauniyar

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.

A Neutral Model Of 100 Million Years Of Chromosome Inversions In The Yeast Genus Lachancea, Brian Clark

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.

An Extension Of Euler's Polyhedron Theorem, Joy Marie D'Andrea

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.

A Quantum Mechanics Approach For The Dynamics Of An Immigration, Emigration Fission Model, Leon Arriola

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.

Model-Based Evaluation Of The Implementation Of Sti Screening Among Men Who Have Sex With Men In Tokyo, Nao Yamamoto

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.