Physical Sciences and Mathematics Commons^™

Cognitive Engagement During Group Learning Activities In Chemistry Courses: An Analysis Of Student Discourse, Safaa Youssef El-Mansy

Dissertations and Theses

As educators, our goal is to help our students be successful, but in order to accomplish this, we need to understand what factors contribute to student success. One factor, small-group active learning, has been correlated to improved academic outcomes; however, the magnitude of this improvement can vary across different courses, different types of group work, and even across courses that use the same group work structure. Therefore, it is important to understand what aspects of group work contribute to its effectiveness. The work presented in this dissertation investigated one specific aspect: students’ cognitive engagement. This was done by analyzing the …

Expansionary Fiscal Contraction Hypothesis: An Evidence From Pakistan, Aisha Irum

CBER Conference

The fiscal sector in Pakistan has been facing mule-layered challenges over several years. One of the reasons is the stubborn and unproductive nature of its public expenditure, and the other one is the lower tax revenues. This issue of hovering fiscal deficit is mostly dealt with the tools of fiscal contraction/austerity which can have a potential impact on the private sector of the economy. Thus, the question which has been addressed in this study is whether the Expansionary Fiscal Contraction (EFC) hypothesis holds in case of Pakistan. Fiscal contraction episodes have been identified using growth in the growth rates of …

Demand Analysis Of Energy Mix In District Kotli Azad Jammu And Kashmir, Pakistan, Syed Kafait Hussain Naqvi

CBER Conference

This study is an effort to empirically analyze the household’s demand for energy mix (electricity, liquefied petroleum gas (LPG), kerosene, and firewood) in the District Kotli, AJK. The study estimates the demand elasticities (price and expenditure) by employing the Linear Approximate Almost Ideal Demand System (LA-AIDS) to 384 households sampled across District Kotli, AJK in 2017. The empirical estimations are carried out by using the Seemingly Unrelated Regression (SUR), keeping intact the adding-up, homogeneity and symmetry restrictions.

Resource Scarcity And Sustainability: Exploring The Water, Energy And Food Nexus, Madiha Hussaini, Riffat Mughal

CBER Conference

This paper focuses on understanding the significance, linkage, issues and prospects of food, water, and energy nexus in the context of Pakistan. It aims to facilitate in exploring measures and developing policies that can be adopted to ensure these essential resources’ management, usage and availability while meeting the sustainable development goals. The Pakistan’s data used for GLS was from 1991 to 2020. The results showed that the availability of freshwater withdrawals in Pakistan for agriculture irrigation, population, and agricultural land has a positive and significant impact on the Food Production Index.

Understanding The Non-Traditional Security Dimensions: Cyber Threat Landscape In Pakistan, Minhas Majeed Khan

CBER Conference

The research analyzes the vulnerabilities and consequences of cyber-attacks on essential infrastructure sectors such as energy, telecommunications, and finance, which are vital for the country’s stability and development. It also evaluates the economic, political, and social effects of cyber incidents on the country’s governance and society. Moreover, the research assesses the current cyber security measures and frameworks in Pakistan and identifies the gaps and opportunities for improvement.

Accentuating The Significance Of Individual Opinions And Indigenous Knowledge About Various Environmental Issues In Pakistan, Muhammad Faisal Ali, Sobia Rose

CBER Conference

The overarching goal was to investigate individual perceptions and opinions about different environmental challenges including climate change. The responsibility and trust on key stakeholders, that are responsible to minimize the negative consequences of climate change, was also identified. For this purpose, data were collected by interviewing 605 students from different universities of Lahore, belonging to diverse educational backgrounds and geographic regions in Pakistan.

The View From Ventress - 2022-23 Academic Year, University Of Mississippi, College Of Liberal Arts

Liberal Arts Newsletters

News from the College of Liberal Arts

2023 November 16 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University

Tennessee Climate Office Weekly Drought Summaries

No abstract provided.

Clustering-Nn Based Cfo Estimation Using Random Access Preambles For 5g Non-Terrestrial Networks, Li Zhen, Luyao Cheng, Zheng Chu, Keping Yu, Pei Xiao, Mohsen Guizani

Machine Learning Faculty Publications

Non-terrestrial networks (NTNs) are expected to play a pivotal role in the future wireless ecosystem. Due to its high-dynamic characteristics, the accurate estimation and compensation of carrier frequency offset (CFO) are crucial for supporting 5G new radio (NR) enabled satellite direct access. With emphasis on ensuring reliable uplink synchronization, we propose a clustering-neural network based CFO estimation scheme by virtue of NR random access preambles. By leveraging the sparsity and regularity of input samples, the proposed scheme can achieve fast and precise prediction of CFOs, while establishing robustness against time uncertainty and channel variation within a satellite beam. Simulation results …

Search For Evidence Of Baryogenesis And Dark Matter In B+→Ψd+P Decays At Babar, J. P. Lees, V. Poireau, E. Grauges, A. Palano, G. Eigen, D. N. Brown, Yu. G. Kolomensky, M. Fritsch, H. Koch, R. Cheaib, C. Hearty, T. S. Mattison, J. A. Mckenna, R. Y. So, V. E. Blinov, A. R. Buzykaev, V. P. Druzhinin, E. A. Kravchenko, Milind Purohit, Et. Al.

Faculty Publications

A new dark sector antibaryon, denoted ψD, could be produced in decays of B mesons. This Letter presents a search for B⁺→ψ_D+p (and the charge conjugate) decays in e⁺e⁻ annihilations at 10.58 GeV, using data collected in the BABAR experiment. Data corresponding to an integrated luminosity of 398 fb⁻¹ are analyzed. No evidence for a signal is observed. Branching fraction upper limits in the range from 10⁻⁷–10⁻⁵ are obtained at 90% confidence level for masses of 1.0<mψ_D< 4.3 GeV/c². The result is also reinterpreted to provide …

Ict Application And Information Service Delivery In South-West Nigeria’S Public Polytechnic Libraries, Omolabake Eunice Akinyemi, Toyosi Rachel Afolabi

Library Philosophy and Practice (e-journal)

Teh study dwells on teh application of information and communication technology (ICT) for enhancing information service delivery in South-West Nigeria’s public polytechnic libraries. Teh study's goal is to determine teh extent of ICT application in polytechnic libraries. For teh study, a descriptive survey research design was adopted. Teh population of teh study consists of all teh library personnel in South-West Nigeria’s public polytechnic libraries. Teh instrument for gathering data was a questionnaire. Descriptive statistics such as mean, standard deviation, frequency count, and simple percentage were used to analyse teh data. Teh hypothesis was tested by Pearson Moment Product Correlation at …

Revealing The Core Dynamics Of Vesta: Insights From Experimental Investigations Of Electrical Resistivity And Thermal Conductivity, Oluwasanmi A. Orole Mr

Electronic Thesis and Dissertation Repository

Insights from high pressure and temperature experiments involving in-situ measurements of the electrical resistivity of Fe-5wt%Ni at temperatures of up to 2000 K, under pressures of 2-5 GPa in a 1000-ton cubic-anvil press have been used to reveal Vesta’s core dynamics. The Wiedemann–Franz law was used to calculate the thermal conductivity from the measured electrical resistivity data. Comparing the findings of this study with prior investigations on both pure Fe and Fe-10wt%Ni indicates that an increase in Ni ranging from 0-10wt% has negligible effect on the electrical resistivity of Fe alloys. By comparing the range of estimated heat flux through …

The Difference In Physical Health Between High-Income And Low-Income Populations In Tennessee, Ailise Newton, Max C. Blessinger, Perrin Perdue

Science University Research Symposium (SURS)

Good overall physical health can be a protective factor against cognitive decline in aging. A good diet, routine exercise, and mindfulness to personal mental health are three main aspects that help determine one’s overall well-being. Socioeconomic status may play a factor in the ability to have access to resources for all three aspects of overall health previously stated. This data is important because it may impact how future researchers go about finding ways to help underprivileged communities. This study aimed to report significant factors that contribute to physical health in relation to cognitive aging from studying six different counties throughout …

Carbon Dot Nanoparticle Synthesis And Gemcitabine Attachment For Cancer Theranostics, Webster G. Andrews, Chaze Espeleta, Hua Mei

Science University Research Symposium (SURS)

The purpose of this research was to synthesize bi-functionalized nanoparticles (NPs) based on carbon dots (CDs), that can perform cancer theranostics in hopes to increase efficacy for both the diagnostics and therapeutics for cancer. In this study, CDs were synthesized using a microwave method. Samples were produced using different time and temperature settings to determine the process yielding the best results. After the initial and final screenings, 16 minutes at 180°C and 650 watts produced the highest yield of CDs with the greatest capacity for bonding to the cancer drug and targeting agent. Through a series of chemical reactions, folic …

Enhanced Photocatalytic And Antimicrobial Properties Of Undoped And Aluminum‑Doped Zinc Oxide Nanosheets Synthesized Via Novel Laser‑Assisted Chemical Bath Technique, Elbadawy A. Kamoun, Elbadawy A. Kamoun

Nanotechnology Research Centre

The urgency of antibiotic resistance has been recognized, necessitating prompt, and focused efforts from the scientific community. Innovative alternatives, such as nanoparticles and photocatalytic agents, have been investigated to confront drugresistant microbes. As an antimicrobial and photocatalytic agent, zinc oxide (ZnO) has demonstrated considerable promise. This study utilized a cutting-edge method called laser-assisted chemical bath synthesis (LACBS) to create undoped and Al-doped ZnO nanostructures without a catalyst. X-ray diffraction (XRD), scanning electron microscopy (SEM), UV–Vis spectrophotometry, and Fourier-transform infrared spectra (FTIR) were used to verify the structural and optical properties of the prepared nanostructures. The influence of doping concentration was …

Taking Songs To Heart: An Investigation Into Musical Appreciation, Anna Kate Lockhart, Eric A. Febles, Valeria Draine, Kaitlin Pendasulo

Science University Research Symposium (SURS)

Abstract

Music cross-culturally occupies a central part of day-to-day living (Trehub et al., 2015). Research has demonstrated music’s consistent ability to modulate emotional states, through the investigation of properties like tempo and key (Res, 2011; Bella, 2001; Jongwan,, 2018; Schellenberg, 2010). Heartbeat is a steady rhythm that each human alive and well experiences daily, and heart rate, specifically the resting heart rate, has been suggested to set a baseline rhythm that may influence perception of musical valence (Koelsch & Jancke, 2015). The current study aims to investigate this hypothesis by establishing a resting heart rate level and modulating the speed …

Domain Specific Feature Representation Learning For Diverse Temporal Data, Farhan Asif Chowdhury

Computer Science ETDs

Humans can leverage domain context to recognize novel patterns and categories based on limited known examples. In contrast, computational learning methods are not adept at exploiting context and require sufficient labeled examples to achieve similar accuracy. Many temporal data domain, for example, seismic signals and oil mining sensor data, requires domain expert annotation, which is both costly and time-consuming. The dependency on training data limits the applicability of machine learning algorithms for domains with limited labeled data. This dissertation aims to address this gap by developing temporal mining algorithms that exploit domain context to learn discriminative feature representation from limited …

Probability Distributions Arising In Connection With The Inspection Paradox For Bernoulli Trials., James E. Marengo, Anne Marino Himes, W. Cade Reinberger, David L. Farnsworth

Articles

In renewal theory, the Inspection Paradox refers to the fact that an interarrival period in a renewal process which contains a fixed inspection time tends to be longer than one for the corresponding uninspected process. We focus on the paradox for Bernoulli trials. Probability distributions and moments for the lengths of the interarrival periods are derived for the inspected process, and we compare them to those for the uninspected case.

Beyond Sustainability Curriculum Integration - Educating Otherwise, Paul Morgan

Sustainability Research & Practice Seminar Presentations

Professor Paul Morgan, Educational Foundations and Policy Studies - Beyond Sustainability Curriculum Integration - Educating Otherwise

“This Is A Book About Relations”: Pollution Is Colonialism By Max Liboiron, Thomas Letcher-Nicholls

The Goose

Book Review of Pollution is Colonialism (2021) by Max Liboiron.

Assessing The Robustness Of Sound Horizon-Free Determinations Of The Hubble Constant, Tristan L. Smith, V. Poulin, T. Simon

Physics & Astronomy Faculty Works

The Hubble tension can be addressed by modifying the sound horizon (r_s) before recombination, triggering interest in early universe estimates of the Hubble constant, H₀, independent of r_s. Constraints on H₀ from an r_s-free analysis of the full shape BOSS galaxy power spectra within Λ CDM were recently reported and used to comment on the viability of physics beyond Λ CDM. Here we demonstrate that r_s-free analyses with current data depend on both the model and the priors placed on the cosmological parameters, such that Λ CDM analyses …

Detailed Characterization Of A Khz-Rate Laser-Driven Fusion At A Thin Liquid Sheet With A Neutron Detection Suite, Benjamin M. Knight, Connor Gautam, Colton R. Stoner, Bryan V. Egner, Joseph R. Smith, Christopher M. Orban, Juan J. Manfredi, Kyle Frische, Michael L. Dexter, Enam A. Chowdury, Anil K. Patnaik

Faculty Publications

We present detailed characterization of laser driven fusion and neutron production (∼10⁵/second) employing 8 mJ, 40fs laser pulses on a thin (< 1 µm) D₂O liquid sheet employing a measurement suite. At relativistic intensity (∼5×10¹⁸W/cm²) and high repetition-rate (1 kHz), the system produces consistent D-D fusion, allowing for consistent neutron generation. Evidence of D-D fusion neutron production is verified b y a measurement suite with three independent detection systems: an EJ-309 organic scintillator with pulse-shape discrimination, a ³He proportional counter, and a set of 36 bubble detectors. Time-of-flight analysis of the scintillator data shows …

The Effects Of Priming On Moral Judgement, Lilly E. Rogers, Anna Lee, Chris Toepher, Zali White

Science University Research Symposium (SURS)

Forming judgments and making decisions based on those judgments is an important and inescapable part of life. Moral decision-making often affects oneself and the people surrounding them. Previous literature has suggested that the act of making moral and ethical decisions can be separated and explained using various theoretical perspectives, two of the most prominent being utilitarianism and absolute deontology (Scott, 2012). Applying and categorizing decision-making into either of these categories has been shown and suggested to largely depend on the priming of a decision, with positive priming leading to more utilitarian decision-making (Broeders et al. 2011). It has further been …

Focus On Me, Sarah Nelson, Ainsley Ambrose, Hannah Pots, Chakuen Rambang

Science University Research Symposium (SURS)

In the modern world, distractions are all around us. Screens and notifications are a constant presence, competing for attention. Companies have taken advantage of people’s addiction to devices by creating advertisements designed to distract from the task at hand. Whether scrolling through social media, watching television, searching the internet, or reading online articles, there are a slew of advertisements. Previous research demonstrates that advertisements have the ability to divert one’s attention, and this process can be affected by many factors, like placement, relatability, and difficulty of task. Switching attention between stimuli can impact other mental processes, but the extent of …

Towards Designing A Knowledge Sharing System For Higher Learning Institutions In The Uae Based On The Social Feature Framework, S. M. F. D. Syed Mustapha, Edmund Evangelista, Farhi Marir

All Works

Numerous ICT instruments, such as communication tools, social media platforms, and collaborative software, bolster and facilitate knowledge sharing activities. Determining the vital success factors for knowledge sharing within its unique context is argued to be essential before implementing it. Therefore, it is imperative to define domain-specific critical success factors when envisioning the design of a knowledge sharing system. This research paper introduces the blueprint for an Academic Knowledge Sharing System (AKSS), rooted in an essential success framework tailored to knowledge sharing to deploy within an academic institution. In this regard, an extensive exploration of the relevant literature led to the …

Monitoring Brain Region-Specific Control Of Protein Turnover And Concentration Using Proteomics, Rebecca Suzanne Burlett

Theses and Dissertations

Regulation of metabolism is vital to health and lies at the core of many different diseases. The breakdown of metabolisms' regulation within the brain can lead to neurological disease like Alzheimer's Disease (AD). AD is known to affect brain regions responsible for memory and memory processing like the hippocampus and entorhinal cortex. The regulation of these regions' protein quality, synthesis, and degradation deviate from 'normal' or 'healthy' levels when AD is happening. It is known there is a breakdown of regulation in those regions; however, little is known about the specifics of regulation in healthy brains regions or how it …

Evaluating 3 Decades Of Precipitation In The Upper Colorado River Basin From A High-Resolution Regional Climate Model, William Rudisill, Alejandro Flores, Rosemary Carroll

Geosciences Faculty Publications and Presentations

Convection-permitting regional climate models (RCMs) have recently become tractable for applications at multi-decadal timescales. These types of models have tremendous utility for water resource studies, but better characterization of precipitation biases is needed, particularly for water-resource-critical mountain regions, where precipitation is highly variable in space, observations are sparse, and the societal water need is great. This study examines 34 years (1987–2020) of RCM precipitation from the Weather Research and Forecasting model (WRF; v3.8.1), using the Climate Forecast System Reanalysis (CFS; CFSv2) initial and lateral boundary conditions and a 1 km × 1 km innermost grid spacing. The RCM is centered …

Perovskite Cspbbr3 Solar Cells With Novel Hole-Transporting Layer Of Metal Complexes, Liqiu Zheng, Evynn S. Jackson, Ny'kesha S. Warren, Robert Owor, Zhongrui Li

Georgia Journal of Science

For the first time, the novel application of Schiff-base copper complexes in all-inorganic perovskite CsBrBr₃ solar cells has been explored and turns out they could be utilized as effective hole-transporting materials. Schiff-base copper complexes with halogen ligands (R=Cl and Br) are synthesized with an ease approach at a low cost, both of which exhibit decent power conversion efficiency of 4.55% and 5.71%, respectively, when being constructed into solar devices as hole transport layers. Thanks to high thermal/chemical stability of those Schiff-base metal complexes, the strengthened stability was achieved which is comparable to that of carbon-based CsBrBr₃ solar cells. …

Ecosystem Service Valuation Of Blue Carbon Habitats: A Review For Saltmarshes And Seagrasses, Geraldine Doolan, Stephen Hynes

Journal of Ocean and Coastal Economics

Oceans and coastal marine ecosystems, particularly vegetated coastal habitats such as mangroves, seagrass, and saltmarsh, play a significant role in the global carbon cycle as long-term carbon sinks. Ensuring that these habitats continue to function as sinks and do not become sources of emissions through habitat degradation is vital for climate and environmental policy goals. These blue carbon ecosystems also provide a number of other important ecosystem services to societies. Understanding the economic value of blue carbon ecosystems is necessary to make informed policy decisions that weigh the costs and benefits of ecosystem management plans. This paper reviews the current …

The Effects Of The Big-Headed Turtle (Platysternon Megacephalum) On Community And Ecosystem In Hong Kong Hill Streams, Wing Lam Fok

Lingnan Theses (MPhil & PhD)

Freshwater turtles and tortoises are ecologically important organisms; however, they are underappreciated, and conservation attention often focuses on the more charismatic animals such as birds and mammals. Although turtles are the most traded group of animals and many species are at the brink of extinction, little research has been done to understand their ecology in Asia because of the rarity of wild populations. Hong Kong is a biodiversity hotspot for freshwater turtle species. The Big-headed Turtle (Platysternon megacephalum) is a critically endangered species that still maintains small populations in Hong Kong, providing a rare opportunity to study the …