Digital Commons Network^™

Relativistic Ultrafast Electron Diffraction At High Repetition Rates, K. M. Siddiqui, D. B. Durham, F. Cropp, F. Ji, S. Paiagua, C. Ophus, N. C. Andresen, L. Jin, J. Wu, S. Wang, X. Zhang, W. You, M. Murnane, Martin Centurion, X. Wang, D. S. Slaughter, R. A. Kaindl, P. Musumeci, A. M. Minor, D. Filippetto

Martin Centurion Publications

The ability to resolve the dynamics of matter on its native temporal and spatial scales constitutes a key challenge and convergent theme across chemistry, biology, and materials science. The last couple of decades have witnessed ultrafast electron diffraction (UED) emerge as one of the forefront techniques with the sensitivity to resolve atomic motions. Increasingly sophisticated UED instruments are being developed that are aimed at increasing the beam brightness in order to observe structural signatures, but so far they have been limited to low average current beams. Here, we present the technical design and capabilities of the HiRES (High Repetition-rate Electron …

Stem-Designated Mba, University Of Dayton

School of Business Administration Blog

The University of Dayton School of Business has created a path for interested students to receive a STEM-designated MBA! STEM fields (Science, Technology, Engineering, and Mathematics) are generally among the fastest-growing sectors in many parts of the world, particularly in developed countries.

Butte Priority Soils Operable Unit (Bpsou) Draft Final Insufficiently Reclaimed Sites Field Sampling Plan (Fsp) For Ur-19 – Butte, Anaconda & Pacific Railway From Montana Street To South Arizona Avenue – Montana Street Adjacent Parcel, Mike Mcanulty

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Wave Interactions With A Cylinder Surrounded By An Arc-Shaped Breakwater, Hui Liang, Siming Zheng, Yanlin Shao, Peiwen Cong, Deborah Greaves

School of Engineering, Computing and Mathematics

Inspired by the energy island used for energy storage, conversion, and transmission, this study explores the water wave interactions with a bottom-standing cylinder surrounded by an arc-shaped breakwater of negligible thickness. The arc-shaped breakwater can be either impermeable or porous. To analyze the problem, a semi-analytical matched eigenfunction expansion method is developed within the framework of linear potential flow theory. The fluid domain is divided into subdomains, with the velocity potentials in each subdomain expressed as eigenfunction expansions. Matching conditions, ensuring continuity in pressure and normal velocity, are imposed at the juncture boundary. The accuracy of the developed semi-analytical method …

The Contextualization Of Socioscientific Issues In An Age Of Accountability, Karrie A. Wikman

USF Tampa Graduate Theses and Dissertations

The overarching aim of this research was to ultimately support global resiliency through science education, preparing citizens to laudably negotiate the contentious socio-cultural science- and technology-based issues of modern times. Correspondingly, this mixed methods study aimed to move a large, diverse school district toward school environments conducive to contextualized socioscientific issues (SSI)-based learning. Of interest to teachers, administrators, and policymakers, the research investigated the effects of subsuming standards-based objectives within the SSI instructional framework on science achievement. Analysis of variance of multilevel assessment and classroom observation protocol data revealed that students experiencing the SSI intervention showed statistically significant gains in …

Refining The Machine Learning Pipeline For Us-Based Public Transit Systems, Jennifer Adorno

USF Tampa Graduate Theses and Dissertations

According to the Population Division of the United Nations, in the United States, almost 90% of the population will live in urban areas by the year 2050. As the population in a given area increases, higher traffic congestion follows due to an increase of vehicles in the road. A possible way to alleviate congestion could be with widespread use of public transit. However, according to the US Census Bureau, the percentage of individuals commuting through public transportation has been decreasing steadily over time, and the American Community Survey reports that during 2019, only around five percent of the US population …

Pyrimidine Biosynthesis And Ribonucleoside Metabolism In Species Of Pseudomonas, Thomas P. West

Faculty Publications

Pyrimidine biosynthesis and ribonucleoside metabolism in species of Pseudomonas was the focus of this review, in relation to their current taxonomic assignments in different homology groups. It was of interest to learn whether pyrimidine biosynthesis in taxonomically related species of Pseudomonas was regulated in a similar fashion by pyrimidine base supplementation or by pyrimidine limitation of pyrimidine auxotrophic strains. It was concluded that the regulation of pyrimidine biosynthesis in Pseudomonas species could not be correlated with their taxonomic assignment into a specific homology group. Pyrimidine ribonucleoside metabolism in Pseudomonas species primarily involved the pyrimidine ribonucleoside salvage enzymes nucleoside hydrolase and …

An Empirical Analysis Of Sentiment And Confidence Regarding Interest Rates In Disclosures Of Public Firms In The U.S. Fintech Sector, James J. Farley

USF Tampa Graduate Theses and Dissertations

This dissertation studied the channel of communication of 10-K and 10-Q financial reports and the effectiveness of relaying interest rate sentiment. 10-K financial reports relay information regarding a company’s financials on a yearly basis while 10-Q reports relay information on a quarterly basis. To study a newer industry of Fintech and how it may be affected by interest rates it was necessary to narrow Fintech to the United States and a coordinated public channel of communication using the 10-Q and 10-K financial reports. Fintech emerged as a relevant word and industry coming off the Great Recession of 2009. During the …

The Social & Economic Impact Of Two-Year And Community Colleges On African Americans In The Central Mississippi Region, Bryan Winfred Massey Sr

Theses and Dissertations

The purpose of this study is to examine the social and economic impact of two-year and community colleges on minorities particularly African Americans who are earning a certificate, transfer credits to a four-year institution, or an Associate of Arts or Science Degree. The proposed research is a qualitative case study investigating the social and economic impact of two-year junior institutions that award certificates of learning and community colleges that award Associated Degrees to African Americans in the Southern Mississippi Delta Region. The primary focus of this case study will be the alumni for community colleges in the central part of …

Aspire: Activity Safety Planning And Infection Risk Estimator For Covid-19, Maveron Tyriel V. Aguares, Anne Nicole U. Gabor, Thaniel C. Lee, Cy Wenvir A. Padillon, Shirley B. Chu

Sinaya: A Philippine Journal for Senior High School Teachers and Students

The COVID-19 pandemic has prompted multiple researchers to investigate this domain since 2020. One aspect being explored in this topic is the available tools in assisting the public in estimating virus risks. Due to the limited availability of the tools, Jimenez and Peng created the Aerosol Transmission Estimator, which is a peer-reviewed risk estimator that garnered positive reception. The tool is encoded in Google sheets. However, people may find it difficult to use due to the terminologies and information presented in that sheet. To solve this, MyCOVIDRisk, a user-friendly website was built for this estimator, but it is only configured …

Percolation-Modeling Comparison Between The Conductivities Of Zinc-Graphene Quantum Dot Nanocomposite And Graphite During Extracellular Electron Transfer In Microbial Fuel Cell Electrodes, Jamme Omar A. Biscocho, Ralph Calvin D. Almazan, Francis M. Emralino, Michelle T. Manglicmot

Sinaya: A Philippine Journal for Senior High School Teachers and Students

While promising as an energy production alternative through its sustainability and wastewater treatment utility, a microbial fuel cell is not widely used due to its low power output and high cost. The development of advanced electrode materials is currently being pursued to solve this problem. A zinc-graphene quantum dot nanocomposite was modeled using percolation theory as a prospective advanced electrode material. During extracellular electron transfer, the electrical conductivity properties of the material were studied through cellular percolation models, percolation probability functions, and electrical conductivity curves. These models were compared against those of the conventional graphite electrodes and the leading graphene …

Systematic Literature Review Of Diffusion Coefficient Studies For Pharmaceutically-Active Compounds, Gerard Daniel L. Gonzales, Rachel Leah V. Luzano, David Bryan G. Unabia, Victoria Gail N. Vasco, Allan N. Soriano

Sinaya: A Philippine Journal for Senior High School Teachers and Students

Pharmaceutically-active compounds (PHACs) such as analgesics, antibiotics, hormones, and antiseptics have been proven beneficial to human life as they can cure illnesses and increase life expectancy. However, heightened usage has led to their emergence in various bodies of water. This has negatively impacted humankind and the environment due to these compounds’ toxicity levels and adverse health effects on living organisms. Therefore, this systematic literature review evaluated the existing literature on the diffusion coefficients of various PHACs. The diffusion coefficient of these compounds serves as a parameter that measures their transport through hydrological mediums and is inversely proportional to molecular size. …

Assessment Of The Feasibility Of Permeable Pavement For Sustainable Stormwater Management Using Swmm, Al Patrick C. Castro, Ma. Aleissa Janelle M. Castillo, Carmela Rose V. Timario, David Timothy F. Go, Marla C. Maniquiz-Redillas

Sinaya: A Philippine Journal for Senior High School Teachers and Students

The advancement of urbanization in the Philippines changed natural lands into impervious surfaces and aided the contamination of surface runoff and nearby water bodies. Low Impact Development (LID) technologies were introduced as an alternative to conventional drainage systems, specifically permeable pavements. Such technology is beneficial for stormwater runoff reduction, ground infiltration enablement, and stormwater treatment. This research was conducted to investigate the feasibility of permeable pavement for sustainable stormwater management in a university setting, particularly in De La Salle University – Laguna Campus. The Storm Water Management Model (SWMM) was utilized to simulate different rainfall scenarios on selected little to …

Optimizing The Dynamic Replacement Of Soft Soils With Sand Using A Fem Tools, Walid Salem A Elsiwi

USF Tampa Graduate Theses and Dissertations

First a dynamic finite element methodology (FEM) was developed to simulate an entire dynamic replacement (DR) program of clay with sand involving multiple poundings. The main objective of this research was to employ FEM and geotechnical test data such as cone penetration test (CPT) data at the site to predict the maximum achievable sand column (SC) depth and the corresponding optimum levels of attributing parameters such as number and height of pounder drops. Another goal was to predict the pore pressure generated in clay due to pounding. A full-scale ground improvement project was used to guide the analytical process. Comparison …

Sharing Resources With Rwanda: Multidisciplinary Engagement With The Forest Of Hope Association In Gishwati-Mukura National Park, Thierry Amiable, Rebecca Chancellor, Trachanda Garcia, Aaron S. Rundus, Jordan Schugar

Sustainability Research & Practice Seminar Presentations

Sharing Resources with Rwanda: Multidisciplinary Engagement with the Forest of Hope Association in Gishwati-Mukura National ParkThierry Amiable, Forest of Hope Association (Rwanda, Rutsiro District) Rebecca Chancellor, Associate Professor of Anthropology & Sociology and Psychology (WCU) Trachanda Garcia, Associate Director of Education Abroad Programs (WCU) Aaron Rundus, Professor of Psychology (WCU) Jordan Schugar, Professor of English (WCU)

Big Data Analytics For Healthcare Social Media: New Algorithms And Insights, Negar Maleki

USF Tampa Graduate Theses and Dissertations

Over the last two decades, there has been a rapid evolution in information and communication technology, including the emergence of social media. Social media has a significant impact on various fields such as politics, business, culture, education, careers, innovation, and especially healthcare. This influence is not a new phenomenon since a survey from ten years ago showed that up to 78\% of American adults used the internet to look for health-related information for themselves or someone else. With the shift towards on-demand services in society, healthcare is also affected by this trend. Instead of waiting for weeks or months to …

The Philosophy Of Ai: Learning From History, Shaping Our Future. Hearing Before The Committee On Homeland Security And Government Affairs, Senate, One Hundred Eighteenth Congress, First Session., Margaret Hu

Congressional Testimony

No abstract provided.

Intellectual Property And “The Lost Year” Of Covid-19 Deaths, Madhavi Sunder, Haochen Sun

Georgetown Law Faculty Publications and Other Works

Protecting intellectual property (IP) is a question of life and death. COVID-19 vaccines, partially incentivized by IP, are estimated to have saved nearly 20 million lives worldwide during the first year of their availability in 2021. However, most of the benefits of this life-saving technology went to high- and upper-middle-income countries. Despite 10 billion vaccines being produced by the end of 2021, only 4 percent of people in low-income countries were fully vaccinated. Paradoxically, IP may also be partly responsible for hundreds of thousands of lives lost in 2021, due to an insufficient supply of vaccines and inequitable access during …

Voltage- And Calcium-Gated Membrane Currents Tune The Plateau Potential Properties Of Multiple Neuron Types, Curtis L Neveu, Paul Smolen, Douglas A Baxter, John H Byrne

Faculty, Staff and Student Publications

Many neurons exhibit regular firing that is limited to the duration and intensity of depolarizing stimuli. However, some neurons exhibit all-or-nothing plateau potentials that, once elicited, can lead to prolonged activity that is independent of stimulus intensity or duration. To better understand this diversity of information processing, we compared the voltage-gated and Ca2+-gated currents of three identified neurons from hermaphroditic Aplysia californica Two of these neurons, B51 and B64, generated plateau potentials and a third neuron, B8, exhibited regular firing and was incapable of generating a plateau potential. With the exception of the Ca2+-gated potassium current (I KCa), all …

2023-11-08 Awards And Surprises In European Soccer, George Burquest

The Spectator Online

No abstract provided.

Voltage- And Calcium-Gated Membrane Currents Tune The Plateau Potential Properties Of Multiple Neuron Types

Faculty, Staff and Student Publications

Many neurons exhibit regular firing that is limited to the duration and intensity of depolarizing stimuli. However, some neurons exhibit all-or-nothing plateau potentials that, once elicited, can lead to prolonged activity that is independent of stimulus intensity or duration. To better understand this diversity of information processing, we compared the voltage-gated and Ca²⁺-gated currents of three identified neurons from hermaphroditic Aplysia californica. Two of these neurons, B51 and B64, generated plateau potentials and a third neuron, B8, exhibited regular firing and was incapable of generating a plateau potential. With the exception of the Ca²⁺-gated potassium …

Weak Measurements And Quantum-To-Classical Transitions In Free Electron–Photon Interactions, Yiming Pan, Eliahu Cohen, Ebrahim Karimi, Avraham Gover, Norbert Schönenberger, Tomáš Chlouba, Kangpeng Wang, Saar Nehemia, Peter Hommelhoff, Ido Kaminer, Yakir Aharonov

Mathematics, Physics, and Computer Science Faculty Articles and Research

How does the quantum-to-classical transition of measurement occur? This question is vital for both foundations and applications of quantum mechanics. Here, we develop a new measurement-based framework for characterizing the classical and quantum free electron–photon interactions and then experimentally test it. We first analyze the transition from projective to weak measurement in generic light–matter interactions and show that any classical electron-laserbeam interaction can be represented as an outcome of weak measurement. In particular, the appearance of classical point-particle acceleration is an example of an amplified weak value resulting from weak measurement. A universal factor, exp(-Γ²/2) , quantifies the …

Exposure Of The Audience To Eco-Horror Movies And Its Relationship To Their Ecophobia Nature's Revenge Movies As A Model, Reham Refaat Mohammad Abdelaal

This study provides the first synthesis of the empirical literature on the psychology of Eco-horror film using multi-disciplinary research from media studies, psychology, neurobiology, psychotherapy, communication studies, clinical psychology, Aesthetics and Art. The study sought to identify the relationship between Audience's exposure to Eco-horror Movies and its Relationship to their Ecophobia, the study belongs to the descriptive studies, and the researcher used the media survey method, This study uses the Magic-Bullet Theory, or hypodermic needle theory’ , The Uses and gratifications Theory, Protection motivation theory (PMT)and the protective frame theory to develop a theoretical framework for ascertaining the type of …

Vol. 8 Entire Issue

The Journal of Economics and Politics

No abstract provided.

Front Matter

The Journal of Economics and Politics

No abstract provided.

Heavy Metals In Newark Soils, Ashaki Rouff

Sustainability Seminar Series

Newark has an extensive network of urban farms and gardens that reclaim unused land, build community, and offer access to fresh, locally grown produce. However, like many post-industrial cities, Newark’s soils are also polluted, presenting a challenge for urban agriculture. Dr. Rouff will share research on the concentrations and forms of the heavy metal lead in urban farm soils, the environmental and health implications, and how urban farming practices help to manage this pollution.

Modelling Basal Area Of Perennial Grasses In Australian Semi-Arid Wooded Grasslands, S. G. Marsden, K. C. Hodgkinson

IGC Proceedings (1977-2023)

In many semi-arid pastoral systems, landscape processes easily become dysfunctional. Shifts to less functional states may be irreversible, and have long-term consequences for pastoral profitability and social viability of rural communities. Typically, shifts to lower functional states involve a decline in perennial grasses (Hodgkinson, 1994). Here we develop a conceptual basis for modelling the basal area of perennial grasses in a semi-arid grassland and validate the model using data from a 10-year grazing study.

The Effect Of Manipulated Conservation Margins In Intensively Grazed Dairy Paddocks On The Biodiversity Of Pteromalidae And Braconidae (Hymenoptera: Parasitica), A. Anderson, G. Purvis, A. Helden, H. Sheridan

IGC Proceedings (1977-2023)

Conserving field margins provides an opportunity to enhance biodiversity in agricultural landscapes. The parasitoid Hymenoptera represent one of the most diverse and biologically specialised of all insect groups and play an important role in insect pest control (LaSalle & Gauld, 1993). The diversity of parasitiods in any habitat is theoretically likely to reflect the diversity of host taxa. The aim of this study was to assess the effects of field margin manipulations on the diversity of parasitoids as a wider indication of effects on general arthropod diversity.

Plant Diversity Patterns Along Altitudinal Gradient In Understory Communities Of Darkesh Region, Bojnord, Iran, A. Arjmandi, H. Ejtehadi, F. Memariani, Mansour Mesdaghi

IGC Proceedings (1977-2023)

The ecotone region of Darkesh with an area of 22,500 hectares is located in the Irano-Turanian xeric-continental bioclimatic zone of Khorassan-Kopet Dagh. To investigate the plant diversity patterns of understory communities along three elevation classes of 1100-1600, 1600-2100, and 2100-2600 m, 187 plots were sampled randomly and abundance and cover of species were recorded using 4-m² plots. Beta diversity and Hill indices were calculated by using R and PAST software. A total of 252 species were recorded including 31 perennial grasses. The most abundant grasses were Poa nemoralis, Poa bulbosa, Bromus sterilis, Brachypodium sylvaticum, and Dactylis glomerata subsp. glomerata …

Using Genetic Diversity In Deep Root Systems Of Perennial Forage Grasses And Rice To Capture Carbon In Tropical Soils, J. Arango, Daniel M. Villegas, R. N. Jauregui, J. A. Cardoso, C. Costa Jr., C. Rebolledo, M. F. Alvarez, M. Selvaraj, L. Rodriguez, M. Mayorga, P. Chavarriaga, A. Notenbaert, M. Quintero, M. Da Silva, Manabu Ishitani, M. Peters, I. Rao, Joe Tohme

IGC Proceedings (1977-2023)

Agricultural soils have the potential not only to be sinks of carbon dioxide (CO₂) but also to mitigate the emissions of this gas to the atmosphere, thus, alleviating global warming. Perennial tropical grasses and rice upland and lowland varieties exhibit a large untapped genetic diversity in their root systems (e.g., deep rooting ability, exudation rates and chemical composition) that, if unlocked, could contribute to increased food production in crop-livestock systems while enhancing soil organic carbon (SOC) in tropical regions. Naturebased solutions that improve crop adaptation and SOC storage in tropical soils could help to remove CO₂ from …