Digital Commons Network^™

Searching For Tev Dark Matter In Irregular Dwarf Galaxies With Hawc Observatory, R. Alfaro, C. Alvarez, J. C. Arteaga-Velázquez, D. Avila Rojas, H. A.Ayala Solares, R. Babu, D. Huang, R. Turner, Et Al.

Michigan Tech Publications, Part 1

We present the results of dark matter (DM) searches in a sample of 31 dwarf irregular (dIrr) galaxies within the field of view of the HAWC Observatory. dIrr galaxies are DM-dominated objects in which astrophysical gamma-ray emission is estimated to be negligible with respect to the secondary gamma-ray flux expected by annihilation or decay of weakly interacting massive particles (WIMPs). While we do not see any statistically significant DM signal in dIrr galaxies, we present the exclusion limits (95% C.L.) for annihilation cross section and decay lifetime for WIMP candidates with masses between 1 and 100 TeV. Exclusion limits from …

Georgia Academy Of Science 2023 Annual Meeting Program, Al Mead, Dominic Desantis, Hasitha Mahabaduge, Samuel Mutiti, Kristine White, Cason Kelley

Georgia Journal of Science

This is the program of the 2023 Annual Meeting of the Georgia Academy of Science.

Reflect To Connect, Sophia Rae Guzules

Liberal Arts and Engineering Studies

Engineering statics is an important course and a prerequisite for many subsequent courses for many engineering majors. It is often students’ first exposure to technical engineering sciences. Most statics concepts are addressed in ways disconnected from students’ prior experiences and interests. Utility Value Interventions (UVIs) have been employed in fields like biology and chemistry to help students connect concepts in class and their lives outside the classroom. However, UVI usage in engineering so far has been limited. In this Senior Project paper, I will describe the process that the team Critical Research in Engineering and Technology Education (CREATE) and I …

Private Pete Fights Illiteracy At Fort Ontario: The Men In Charge, Christian Wright, Adrian Mandzy

2023 Celebration of Student Scholarship - Poster Presentations

From June of 1943 to February of 1944, the 1210th Special Training Unit at Fort Ontario in Oswego, New York taught pre-basic military training to thousands of illiterate, slow learning, and non-English-speaking soldiers in the United States Army. The training center at Fort Ontario conducted programs in disciplinary barracks, specialized military, technical, academic and vocational education.

Classification Of Road Objects Using Convolutional Neural Networks, Mann Patel, Heba Elgazzar

2023 Celebration of Student Scholarship - Poster Presentations

Driving is the primary means of transportation for many people around the world. Whether the use is to assist human drivers or create autonomous driving, the use of machine learning can create safer road conditions. Drivers must consider other objects on the road, most commonly other vehicles and pedestrians. These three components, road signs, pedestrians, and vehicles, make up a large majority of objects that a driver will encounter when on the road. This research applies machine learning algorithms, specifically Convolutional Neural Networks (CNN), to classify these road objects. The goal is to create a classification model that can reliably …

College Of Graduate Programs And Honors Studies Newsletter - March 2023, College Of Graduate Programs And Honors Studies, Wright State University

College of Graduate Programs and Honors Studies Newsletter

An eight page newsletter created by the College of Graduate Programs and Honors Studies at Wright State University. This newsletter includes a upcoming events, message from the dean, and more.

Cuentos De Ciencia Ficción, Arjun Brahmandam, Kate Degreve '24, Aashi Dharia, Katherine Ge, Madison Guzman, Catherine Jenks '24, Nikhil Kodali, Hunter Mathews, Luke Mauk '24, Jayram Palamadai, Soap Pehlke, Brent Rodrigo, Tate Schneider '24, Rhea Shah, Mila Wolkowitz, Vibhasri Yama, William Yu, Lily Zhang

Spanish III

In Spring 2023, IMSA’s Mod 8 Spanish 3 class wrote a book with science fiction stories based on real scientific articles. It involved selecting several articles that are based on real scientific concepts or theories, analyzing them, and using them as inspiration for writing original science fiction stories. Students explored how real science can be used to create compelling fiction, and learned to write creatively while also incorporating scientific accuracy. The project included presentations of the stories by the autors and peer feedback sessions. Overall, this project encouraged the students to think critically about the intersection of science and fiction, …

The Gazette March 1, 2023, Langston University

LU Gazette, 2020-2029

The student newspaper for Langston University

How Exemplary Title I Elementary School Principals Lead With An Infinite Mindset, Lindsey Rae Gatfield

Dissertations

Purpose: The purpose of this study was to explore and describe how exemplary Title I elementary school principals perceive practices of Sinek’s infinite mindset framework are embedded in their organization to inspire achievement of extraordinary results. A further purpose of this study was to understand organizational supports and barriers exemplary Title I elementary school principals perceive affect infinite mindset development. Methodology: This phenomenological study explored experiences of exemplary leaders and their perceptions of how the five practices of infinite mindset are embedded in their organization. The target population for this study was exemplary Title I elementary school principals in Orange …

The Afit Engineer, Volume 5, Issue 1, Graduate School Of Engineering And Management, Air Force Institute Of Technology

AFIT Documents

In this issue:

• 2023 Graduation
• WMD research at AFIT
• NOAA aerosol research at AFIT
• AFIT Model Shop

The U.S. Integrated Ocean Observing System (Ioos): A Prototype User Valuation, Charles S. Colgan, Castelletto Anthony

Publications

The Integrated Ocean Observing System of the United States provides a large variety of oceanographic and related data at no charge through 11 Regional Associations. Since the data is distributed without price it is difficult to determine the economic value of the data. That value is useful in explaining and justifying the investment in ocean observing. This study applies discrete choice modeling to determine valuation of the data for users of data through the RA websites. The study found annual values of $190 to $220 million, and these estimates are considered highly conservative. A guide for replication of the valuation …

Error Analysis Of A Fully Discrete Projection Method For Magnetohydrodynamic System, Qianqian Ding, Xiaoming He, Xiaonian Long, Shipeng Mao

Mathematics and Statistics Faculty Research & Creative Works

In this paper, we develop and analyze a finite element projection method for magnetohydrodynamics equations in Lipschitz domain. A fully discrete scheme based on Euler semi-implicit method is proposed, in which continuous elements are used to approximate the Navier–Stokes equations and H(curl) conforming Nédélec edge elements are used to approximate the magnetic equation. One key point of the projection method is to be compatible with two different spaces for calculating velocity, which leads one to obtain the pressure by solving a Poisson equation. The results show that the proposed projection scheme meets a discrete energy stability. In addition, with the …

Error Analysis Of A Fully Discrete Projection Method For Magnetohydrodynamic System, Qianqian Ding, Xiaoming He, Xiaonian Long, Shipeng Mao

Mathematics and Statistics Faculty Research & Creative Works

In this paper, we develop and analyze a finite element projection method for magnetohydrodynamics equations in Lipschitz domain. A fully discrete scheme based on Euler semi-implicit method is proposed, in which continuous elements are used to approximate the Navier–Stokes equations and H(curl) conforming Nédélec edge elements are used to approximate the magnetic equation. One key point of the projection method is to be compatible with two different spaces for calculating velocity, which leads one to obtain the pressure by solving a Poisson equation. The results show that the proposed projection scheme meets a discrete energy stability. In addition, with the …

Pan-Arctic Soil Moisture Control On Tundra Carbon Sequestration And Plant Productivity, Donatella Zona, Peter M. Lafleur, Koen Hufkens, Beniamino Gioli, Barbara Bailey, George Burba, Eugénie S. Euskirchen, Jennifer D. Watts, Kyle A. Arndt, Mary Farina, John S. Kimball, Martin Heimann, Mathias Göckede, Martijn Pallandt, Torben R. Christensen, Mikhail Mastepanov, Efrén López-Blanco, Albertus J. Dolman, Roisin Commane, Charles E. Miller, Josh Hashemi, Lars Kutzbach, David Holl, Julia Boike, Christian Wille, Torsten Sachs, Aram Kalhori, Elyn R. Humphreys, Oliver Sonnentag, Gesa Meyer, Gabriel H. Gosselin, Philip Marsh, Walter C. Oechel

Daugherty Water for Food Global Institute: Faculty Publications

Long-term atmospheric CO₂ concentration records have suggested a reduction in the positive effect of warming on high-latitude carbon uptake since the 1990s. A variety of mechanisms have been proposed to explain the reduced net carbon sink of northern ecosystems with increased air temperature, including water stress on vegetation and increased respiration over recent decades. However, the lack of consistent long-term carbon flux and in situ soil moisture data has severely limited our ability to identify the mechanisms responsible for the recent reduced carbon sink strength. In this study, we used a record of nearly 100 site-years of eddy covariance …

Creating A Path To Regulation -- Digital Assets, Howey And The Regulatory Dilemma, Gunjan D. Devnani

North Carolina Banking Institute

No abstract provided.

Hypothalamic Menin Regulates Systemic Aging And Cognitive Decline, Lige Leng, Et. Al, Jingqi Yan, Jie Zhang

Biological, Geological, and Environmental Faculty Publications

Aging is a systemic process, which is a risk factor for impaired physiological functions, and finally death. The molecular mechanisms driving aging process and the associated cognitive decline are not fully understood. The hypothalamus acts as the arbiter that orchestrates systemic aging through neuroinflammatory signaling. Our recent findings revealed that Menin plays important roles in neuroinflammation and brain development. Here, we found that the hypothalamic Menin signaling diminished in aged mice, which correlates with systemic aging and cognitive deficits. Restoring Menin expression in ventromedial nucleus of hypothalamus (VMH) of aged mice extended lifespan, improved learning and memory, and ameliorated aging …

The Learning Log, March 2023, Lindenwood University

Learning Log

The Learning Log is the electronic newsletter of the Lindenwood University Learning Academy.

Wofford Today Spring 2023, Wofford College. Office Of Marketing And Communications

Wofford Today

No abstract provided.

Connections, 2022, University Of Montana--Missoula. Mansfield Library

Connections

No abstract provided.

Predicting Mobility Using Limited Data During Early Stages Of A Pandemic, Michael T. Lash, S. Sajeesh, Özgür M. Araz

Department of Marketing: Faculty Publications

The COVID-19 pandemic has changed consumer behavior substantially. In this study, we explore the drivers of consumer mobility in several metropolitan areas in the United States under the perceived risks of COVID-19. We capture multiple dimensions of perceived risk using local and national cases and death counts of COVID-19, along with real-time Google Trends data for personal protective equipment (PPE). While Google Trends data are popular inputs in many studies, the risk of multicollinearity escalates with the addition of more relevant terms. Therefore, multicollinearity-alleviating methods are needed to appropriately leverage information provided by Google Trends data. We develop and utilize …

Online Education And Managing Service Quality With The Challenges Of Covid 19: The Case Of University Of Business And Technology (Ubt) Saudi Arabia, Mohammad Kanan, Ayman Zerban, Salah Abunar, Ameen El Harbi, Gamal Weheba, Ramiz Assaf

Applied Mathematics & Information Sciences

With the pandemic of COVID 19 hitting global economy and forcing social distance, all sectors were exposed to the wave. The educational sector is not exceptional, most universities were forced to adopt online education with the lack of experience necessary needed. This step was like walking blind in a foggy road without realizing the suitability of this service or how to satisfy students. The pandemic spread of Novel Corona Virus (COVID-19) has created stress, anxiety, and several concerns among people around the world. It is disrupting every aspect of human life including education. Since customer satisfaction has always been linked …

Semi-Analytical Technique To Study The Dynamics Of Low Earth Satellites Under Gravitational Perturbations Using Universal Variables, A. B. Yassen, A. H. Ibrahim, M. Radwan, W. N. Ahmed

Applied Mathematics & Information Sciences

Low-altitude Earth orbits provide important benefits for space missions. Among these benefits are the high-resolution images and resupply. In the present work, we studied the dynamics of Earth satellites that move in low orbits. The force model comprises the gravitational resonance 13:1, besides the Earth’s gravitational potential up to the second degree and order. In order to avoid the appearance of singularities, the quasi-Hamiltonian equations of motion are formulated in terms of non-singular universal variables instead of Delaunay variables. We integrated numerically the equations of motion and performed some numerical simulations. It is found that the variations in eccentricity and …

Some Differential Identities For Rings Involving Prime Ideals, J. J. Jaraden, B. N. Al-Hasanat, L. Oukhtite, I. A. Al-Lawama

Applied Mathematics & Information Sciences

In many studies on ring structures, derivations are found to play a significant role in determining commutativity. In this paper we show the commutativity of a prime ring using certain identities on the generalized semi-derivation of such ring. The considered derivation maps will be either centralizing or commuting. We intend to propose such results as a new method to demonstrate prime ring commutativity.

Nonmagnetic Negative Refractive Index Media Based On Chalcogenide Glasses, N. Boutabba

Applied Mathematics & Information Sciences

We report in this work the study of the permittivity and the losses in non-linear nonmagnetic negative refractive index media. We analyze the permittivity and the losses dependence on the inclusion number of the particles used in the suggested media that is made by interlacing plasmonic metallic particles and a dielectric. We show that the exhibition of a negative permittivity in these strongly anisotropic media depends not only on the inclusion number of the particles and the frequency range but also on the oscillation frequency of free electrons in the metal which plays the major role. We finally suggest the …

A Preliminary Volterra Lotka Model Analysing Cancer, Intracellular Parasite, And Immune Cells Interaction, Nadia Boutabba, Gehan Abuelenain

Applied Mathematics & Information Sciences

In this paper, we investigate the dynamics of immune and tumor cell densities in the presence of a parasite using the prey- predator Volterra-Lotka model in a biological system, assuming that the parasite is either a down or up-regulator of the induced immune cells. Thus, we analysed the model for equal and non equal initial conditions and report their impact on the populations growth.

Ola Distribution: A New One Parameter Model With Applications To Engineering And Covid-19 Data, Ola Al-Ta’Ani, Mohammed M. Gharaibeh

Applied Mathematics & Information Sciences

We employed the notion of mixture distributions to suggest a new one parameter continuous distribution for modeling real lifetime data called Ola Distribution. Its properties are explored including moments and related measures, moment generating function, reliability analysis functions, order statistics, Bonferroni and Lorenz curves, stochastic ordering, Re ́nyi entropy and mean deviations. The maximum likelihood method is adapted to estimate the parameter of the distribution. Applications to engineering and COVID- 19 data sets are presented to illustrate the usefulness of the suggested distribution. The applications showed that Ola distribution outperforms some competitive distributions and can be considered as a useful …

Numerical Solution For The Sin-Gordon Equation Using The Finite Difference Method And The Non-Stander Finite Difference Method, K. R. Raslan, A. A. Soliman, Khalid K. Ali, M. Gaber, Soma R. Almhdy

Applied Mathematics & Information Sciences

In this paper, We study the non-linear sin Gordon equation as a numerical solution using two methods.: the finite differences method and the non-standard finite differences method. A comparison is presented between the numerical results of both methods.The stability of two schemes is conditionally stable.Some tables and figures are presented to illustrate our results.

Predictive Analysis Of Misuse Of Alcohol And Drugs Using Machine Learning Algorithms: The Case Of Using An Imbalanced Dataset From South Africa, Alexander Boateng, Christopher Odoom, Eric Teye Mensah, Sarah Mensah Fobi, Daniel Maposa

Applied Mathematics & Information Sciences

Drug and alcohol misuse has become a significant global distraction to the development of the youths and future leaders, especially in South Africa. The ideal solution to these unhealthy practices is for institutions, governments, and individuals to put preventive measures such as counselling, sanctions, and fines to help control drug and alcohol misuse. However, it is challenging to know the group of people or individuals engaged in such deteriorating activities by merely monitoring individuals physically. It makes it difficult even to plan the measures to control the issue. Therefore this paper has applied and compared six supervised machine learning algorithms …

E-Learning Innovation In The Institutions Of Jordans Higher Education: A Case Study, Nouh Alhindawi

Applied Mathematics & Information Sciences

eLearning has gained widespread popularity in recent years due to its convenience and flexibility. In Jordan, the higher education institutions have embraced e-learning and have implemented various innovations in their e-learning programs, based on a national plan for embedding online learning (full and blended) in the higher education system. These innovations include the use of new technologies and tools, collaboration with industry partners, utilization of Open Educational Resources (OER), incorporation of experiential learning, and implementation of personalized and adaptive learning. These approaches have helped to enhance the quality and effectiveness of e-learning programs, and have ensured that they meet the …

Predicting The Behavior Of Solar Energy In Tulkarm City Using Markov Chains And Fuzzy Markov Chains, Saed Mallak, Mohammad Kanan, Samer Alsadi, Ghadeer Sabbah, Siraj Zahran, Hani Attar

Applied Mathematics & Information Sciences

In this paper, we predict the behavior of solar energy in Tulkarm city, Palestine, using Markov chains and fuzzy Markov chains. Relying on solar radiation data in Tulkarm city during 2013–2016, two models are built that correspond to each season. A year is divided into four seasons, each of which consists of three months. Data from the period 2013–2015 are used to build the models, whereas data from 2016 is compared with the results. The accuracy of the models was better in the summer and winter.