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Articles 56551 - 56580 of 721903
Full-Text Articles in Entire DC Network
Towards A New Discourse On Success In Alternative Education, Samuel Thomas Settelmeyer
Towards A New Discourse On Success In Alternative Education, Samuel Thomas Settelmeyer
Dissertations and Theses
Although researchers agree that Alternative Education (AE) within the United States is an essential set of schools and programs that do things beyond traditional education, they do not agree on the purpose for these efforts. To understand how researchers can connect between existing perspectives and consider new ways that they can discuss success in the future, I interviewed 16 students and 15 staff from three different AE schools within the same state. Through thematic analysis, I found students and staff to describe success as an amalgamation of individual and common conceptions, requiring individual effort and support, a commitment to daily …
Efficient And Chemoselective Access To Highly Functionalized Arenes By C-H Deprotonative Generation Of Aryne Intermediates, Bryan Edward Metze
Efficient And Chemoselective Access To Highly Functionalized Arenes By C-H Deprotonative Generation Of Aryne Intermediates, Bryan Edward Metze
Dissertations and Theses
Arenes are a ubiquitous structural motif occurring in numerous organic pharmaceuticals, agrochemicals, secondary metabolites, and functional materials. As such, studies on the characterization, functionalization, and properties of arenes have been a central pillar of organic chemistry since its inception. Early methods to synthesize complex benzenoid rings focused on ring functionalization rather than ring construction due to the high accessibility of very simple arenes and the wide range of aromatic substitution reactions discovered in the late 19th century. As the importance of arenes was recognized more methods of building complex arenes emerged. Both classical and modern approaches are still somewhat limited, …
Automatic Measurement Of Dialogue Engagingness In Multilingual Settings, Amila Ferron
Automatic Measurement Of Dialogue Engagingness In Multilingual Settings, Amila Ferron
Dissertations and Theses
Expansive use of large language models (LLMs) as dialogue systems brings increased importance to the evaluation of the responses they generate. Although evaluation of qualities such as coherence and fluency are readily possible with well-established automatic metrics, engagingness is often measured with human evaluation -- a process that can be costly and slows the pace of development. Existing automatic metrics for engagingness have low to moderate correlation with human annotations, evaluate the response without the conversation history, are complicated to implement, or are designed for a specific dataset. Moreover, they have been tested exclusively on English conversations. Given that dialogue …
Detecting Drifts In Data Streams Using Kullback-Leibler (Kl) Divergence Measure For Data Engineering Applications, Jeomoan Francis Kurian, Mohamed Allali
Detecting Drifts In Data Streams Using Kullback-Leibler (Kl) Divergence Measure For Data Engineering Applications, Jeomoan Francis Kurian, Mohamed Allali
Engineering Faculty Articles and Research
The exponential growth of data coupled with the widespread application of artificial intelligence(AI) presents organizations with challenges in upholding data accuracy, especially within data engineering functions. While the Extraction, Transformation, and Loading process addresses error-free data ingestion, validating the content within data streams remains a challenge. Prompt detection and remediation of data issues are crucial, especially in automated analytical environments driven by AI. To address these issues, this study focuses on detecting drifts in data distributions and divergence within data fields processed from different sample populations. Using a hypothetical banking scenario, we illustrate the impact of data drift on automated …
Gardner-Webb’S Department Of Natural Sciences Receives Funds For Undergraduate Researchers, Office Of University Communications
Gardner-Webb’S Department Of Natural Sciences Receives Funds For Undergraduate Researchers, Office Of University Communications
Gardner-Webb NewsCenter Archive
North Carolina Independent Colleges and Universities (NCICU) awarded two of 11 Undergraduate Research Program Grants to students in the Gardner-Webb Department of Natural Sciences. Tuyet “Snow” Anh Nguyen, a chemistry major, and Kyndal Elaina Jackson, a biology major, received over $500 each to complete their research in the 2024 Fall Semester.
Explorando Las Ciencias Exactas: Teoría Y Aplicaciones En El Mundo De Los Números, Fabrício Moraes De Almeida, Daniel Méndez De La Cruz, Patricia Del Carmen Gerónimo Ramos, Josué Ojeda Montejo, Cristo Leon
Explorando Las Ciencias Exactas: Teoría Y Aplicaciones En El Mundo De Los Números, Fabrício Moraes De Almeida, Daniel Méndez De La Cruz, Patricia Del Carmen Gerónimo Ramos, Josué Ojeda Montejo, Cristo Leon
STEM for Success Resources
Las ciencias exactas, compuestas por las matemáticas, la física y otras, nos ofrecen un marco fundamental para comprender el universo y su región fronteriza. En este fascinante viaje nos adentraremos en el mundo de los números, explorando tanto sus fundamentos teóricos como sus aplicaciones prácticas en diferentes áreas de un amplio espectro. Por lo tanto, el libro presenta los conceptos teórico-prácticos en los resultados obtenidos por los distintos autores y coautores en la producción de cada capítulo. Por encima de todo, Atena Editora ofrece divulgación científica con calidad y excelencia, esenciales para asegurar protagonismo entre las mejores editoriales de Brasil …
Collisional Damping In Plasmonic Wakefield Accelerators, Maxime Pindrys
Collisional Damping In Plasmonic Wakefield Accelerators, Maxime Pindrys
Honors Scholar Theses
We investigate the previously proposed role of collisional damping in plasmonic wakefield accelerators. Wakefields driven in a doped semi-conductor will exist in differing regimes dependent on the driving beam’s intensity. At low intensities, the mobility of free carrier electrons is limited. Here, wakefields will be small if the mean free path of an electron is short compared to the quiver amplitude of a free electron. After reaching a threshold intensity, conduction electrons in the semiconductor will be driven to such high speeds that their coulomb cross section will drop sharply. Here the resulting wakes will resemble those in a hollow …
Jamaican Teachers’ Perceptions Of The Impact Of The Tablets In School Project On Their Literacy-Teaching Practices, Valri Leonie Morgan
Jamaican Teachers’ Perceptions Of The Impact Of The Tablets In School Project On Their Literacy-Teaching Practices, Valri Leonie Morgan
Walden Dissertations and Doctoral Studies
There have been many innovations targeting literacy teaching and learning in small countries such as Jamaica, but changes to literacy teaching practices are rarely sustained beyond the life of the initial projects. The purpose of this study was to understand teachers’ rationale for changes to literacy teaching practices that were and were not sustained beyond the life of the initial Tablets in Schools (TIS) project of 2014 in Jamaica. Grounded in Lewin’s and Rogers’s change theories, the study’s conceptual framework communicated that impactful innovation leads to sustainable change. The two research questions sought to establish how primary school teachers explained …
Design And Implementation Of Non-Isolated High Gain Dc-Dc Converter For Photovoltaic Application, Rajesh R
Design And Implementation Of Non-Isolated High Gain Dc-Dc Converter For Photovoltaic Application, Rajesh R
Theses and Dissertations
Fossil fuel-based power plants emit 25% of greenhouse gases and 40% of carbon emissions globally. Therefore, several countries focus on deploying RES-based electricity production (such as solar and wind). As per the International Energy Agency report, solar PV might be the lowest-cost option for generating electricity in the future. Solar energy is highly emission-free, but it is still a key challenge in procuring the maximum amount of energy from solar PV due to its non–linear characteristics. Therefore, a DC-DC converter must integrate with solar PV to increase the output voltage level. Many existing topologies exist in the literature, but the …
Connection-Saving Gate Assignment: A Computational Approach, Rob Mailley
Connection-Saving Gate Assignment: A Computational Approach, Rob Mailley
Computer Science Senior Theses
The growth of the commercial aviation industry has yielded many interesting problems in the field of Operations Research, many of which are now able to be solved as both technology and mathematical optimization improve. A particularly interesting problem in airport operations re- search is the Aircraft Gate Assignment Problem (AGAP), which seeks to create a feasible match- ing between planes and flights at an airport. This problem is well-suited to modeling with Integer Programming, and has attracted research since the 1970s. Researchers of the AGAP have considered many different objectives, ranging from airline-focused objectives to more passenger-focused objective functions. In …
Welfare Maximization In The Airplane Problem, Alina Chadwick
Welfare Maximization In The Airplane Problem, Alina Chadwick
Computer Science Senior Theses
Given a set of passengers and a set of airplane seats, the goal of the airplane problem is to sit passengers in seats in a way that maximizes the sum of their total welfare, that is, the total happiness of the passengers in the plane. We aim to maximize their welfare subject to three constraints and how much they care about each constraint being satisfied: a group constraint (where passengers may want to sit together), a constraint on where in a row passengers want to sit (i.e. a window seat, a middle seat, or an aisle seat), and finally a …
Math, Chatgpt, And You: The Problem With Mathematical Accuracy In Large Language Models, Alexandre M. Hamel
Math, Chatgpt, And You: The Problem With Mathematical Accuracy In Large Language Models, Alexandre M. Hamel
Computer Science Senior Theses
ChatGPT and other Large Language Models (LLMs) currently do a good job at generating novel text across many domains, but math remains a consistent issue when it comes to the accuracy of answers generated by these models. My research into various ways to manipulate the model have led me to the conclusion that a general closed form solution to help LLMs with math is both unrealistic and likely impossible. LLMs can be trained more successfully as you narrow the problem space, but consideration must be taken on the part of human user to recognize when an LLM is detrimental to …
Space Bounds For Estimating Minimum Norm Of Solutions In Underconstrained Systems, Jeffrey Jiang
Space Bounds For Estimating Minimum Norm Of Solutions In Underconstrained Systems, Jeffrey Jiang
Computer Science Senior Theses
In this work, we wish to investigate the following situation: suppose we are in an underconstrained linear system where observations are constant but predictors are streaming in. That is, the number of predictors—and therefore the dimensionality of our solution—is changing. How hard is it for a streaming algorithm to maintain the ”size” or norm of the solution if we are constrained in space? More informally, can we keep track of the norm of the solution as new data is streaming in without naively memorizing all data and computing the solution directly? We first show a lower bound that any streaming …
Open Source Supply Chain Security: A Cost-Benefit Analysis Of Achieving Various Security Thresholds In Build Environments, Carly Retterer
Open Source Supply Chain Security: A Cost-Benefit Analysis Of Achieving Various Security Thresholds In Build Environments, Carly Retterer
Computer Science Senior Theses
Open source software has become a cornerstone of modern software development, offering unparalleled opportunities for innovation and collaboration. However, its widespread adoption has also introduced a host of security vulnerabilities, particularly in the software supply chain. This paper provides a comprehensive cost-benefit analysis of achieving various security thresholds to harden the build environment, focusing on isolated, hermetic, reproducible, and bootstrappable builds. For each build type, we provide a clear definition and outline the steps required for implementation. We then evaluate the associated costs and benefits of each build, emphasizing their roles in strengthening the build environment and enhancing supply chain …
Emotional Regulation On Modulating Associations Between Depression And Physical Activity As Characterized Via Deep Learning, Franklin Ye Ruan
Emotional Regulation On Modulating Associations Between Depression And Physical Activity As Characterized Via Deep Learning, Franklin Ye Ruan
Computer Science Senior Theses
Emotional regulation and physical activity are known to be associated with depression; however, a deeper understanding of how emotional regulation may strengthen or weaken the bonds between depressive symptoms and physical activity may aid clinicians and researchers in developing cognitive behavioral therapy (CBT) for those adversely affected by depression. As part of the Tracking Depression Study, this analysis uses data collected from 306 participants diagnosed with Major Depressive Disorder. To study their behavior, we analyze actigraphy data, or longitudinal physical activity intensity data, as it relates to depression severity, quantified by the daily PHQ-9 questionnaires. We study these associations through …
Data-Driven Computing Methods For Nonlinear Physics Systems With Geometric Constraints, Yunjin Tong
Data-Driven Computing Methods For Nonlinear Physics Systems With Geometric Constraints, Yunjin Tong
Computer Science Senior Theses
In a landscape where scientific discovery is increasingly driven by data, the integration of machine learning (ML) with traditional scientific methodologies has emerged as a transformative approach. This paper introduces a novel, data-driven framework that synergizes physics-based priors with advanced ML techniques to address the computational and practical limitations inherent in first-principle-based methods and brute-force machine learning methods. Our framework showcases four algorithms, each embedding a specific physics-based prior tailored to a particular class of nonlinear systems, including separable and nonseparable Hamiltonian systems, hyperbolic partial differential equations, and incompressible fluid dynamics. The intrinsic incorporation of physical laws preserves the system's …
Whisper: Proximity-Based Authentication For Securely Sharing Secrets, Charles A. Vogel
Whisper: Proximity-Based Authentication For Securely Sharing Secrets, Charles A. Vogel
Computer Science Senior Theses
Cryptography offers a wide arsenal of encryption methods to enable secure communication between two
devices that have already exchanged a shared secret. Existing techniques for exchanging a shared secret,
however, are often vulnerable to man-in-the-middle attacks, require special hardware for out-of-band com-
munications, or require a pre-existing Internet connection. With the constantly increasing prevalence of
Internet of Things (IoT) devices sharing sensitive information via wireless networks, the need for a method
to establish secure communication is more pressing than ever.
With this context, we present Whisper, a novel technique that combines elements of digital commu-
nication theory, cryptography, and probability …
From The Editor In Chief, Antulio J. Echevarria Ii
From The Editor In Chief, Antulio J. Echevarria Ii
The US Army War College Quarterly: Parameters
Welcome to the Summer 2024 issue of Parameters. We open this issue with a special “In Memoriam” by General Charles A. Flynn, Commander US Army Pacific, honoring the life and legacies of our director and consummate colleague, Carol V. Evans. We dedicate this issue to her. General Flynn’s memoriam is followed by an In Focus commentary on China’s Belt and Road Initiative. We then feature three forums covering the Russia-Ukraine War, the Middle East, and Professional Development. This issue also contains special essays on the role of professional writing, the US Army War College’s Civil-Military Relations Center, …
Parameters Summer 2024, Usawc Press
Parameters Summer 2024, Usawc Press
The US Army War College Quarterly: Parameters
No abstract provided.
Closing The Gap: Officer Advanced Education Stem+M (Management), Leon L. Robert Jr., Carl J. Wojtaszek
Closing The Gap: Officer Advanced Education Stem+M (Management), Leon L. Robert Jr., Carl J. Wojtaszek
The US Army War College Quarterly: Parameters
The Army has made insufficient progress in arming its officers with science, technology, engineering, mathematics, and management (STEM+M) knowledge. The contemporary battlefield is faster paced, technologically enabled, and data driven, requiring officers to possess more skills, knowledge, and experience. We examine the Army’s history with STEM education and show that, in terms of education, the current Army officer corps has fallen behind its requirements for technology-enabled forces and modern society. We conclude with recommendations on how the Army can close the STEM+M education gap through advances in higher education and adopting talent management practices.
Re: Conditional Approval Letter Butte Priority Soils Operable Unit Grove Gulch Sedimentation Bay 100% Remedial Design (Dated March 22, 2024), Emma Rott
Silver Bow Creek/Butte Area Superfund Site
No abstract provided.
Parents’ Perspectives On School Readiness In Preschool-Age Children In Idaho, Courtney Painton
Parents’ Perspectives On School Readiness In Preschool-Age Children In Idaho, Courtney Painton
Walden Dissertations and Doctoral Studies
Over half of Idaho’s incoming kindergarteners lack the necessary school readiness skills. The environment in which the child lives and grows, which includes the child’s parents, determines the child’s readiness for school. This study addressed Idaho parents’ roles in preparing their preschool-aged child for kindergarten, and their current ability to access resources and information on school readiness. The study was grounded in Bronfenbrenner’s ecological systems theory, which provided a framework for the influence of parents on a child’s school readiness outcomes based on the idea that a person’s behavior evolves based on the relationship between the person and their environment. …
Social Identity Comparison Of Black And White Students Of Attend Historically Black Colleges And Universities, Korliss Hall Datcher
Social Identity Comparison Of Black And White Students Of Attend Historically Black Colleges And Universities, Korliss Hall Datcher
Walden Dissertations and Doctoral Studies
Throughout college, social identity and belonging to social groups significantly shape an individual’s identity. Historically Black colleges and universities (HBCUs) have become more diverse as more White students, faculty, staff, and administrators have begun to learn and work in this environment. This mixed-methods study aimed to contrast self-reported measures and experiences between Black and White students attending historically HBCUs. Social identity theory guided the study, as the theory suggests that groups, such as family, culture, and academic class, play a significant part in establishing pride and self-esteem. The qualitative component of the study explored the perceptions of social identity among …
High School Mathematics Teachers’ Use Of Online Formative Assessment To Inform Instruction At A Northeast Regional High School District, Kelly Marie Slingerland
High School Mathematics Teachers’ Use Of Online Formative Assessment To Inform Instruction At A Northeast Regional High School District, Kelly Marie Slingerland
Walden Dissertations and Doctoral Studies
The problem addressed through this study was the inconsistent implementation of online formative assessment to inform instruction by high school mathematics teachers in a Northeast Regional High School District (NRHSD). The purpose of this basic qualitative study was to investigate how high school mathematics teachers in a NRHSD use online formative assessment to inform instruction. Identification of successful online formative assessment can be used to inform the training, resources, and supports teachers need to promote student achievement. The technology acceptance model (TAM) was used as the conceptual framework to ground the project study. Interviews with 12 high school mathematics teachers …
Perspectives Of Middle School Science Teachers And College Instructors Regarding Preservice Writing Pedagogy Preparation, Amanda Stewart
Perspectives Of Middle School Science Teachers And College Instructors Regarding Preservice Writing Pedagogy Preparation, Amanda Stewart
Walden Dissertations and Doctoral Studies
The local problem explored in this study was the barriers and challenges facing middle school teachers in integrating and assessing writing in a science classroom. The purpose of this basic qualitative study was to explore the perspectives of college instructors and middle school science teachers regarding how teacher education programs provide the pedagogical skills necessary to integrate and assess writing within the classroom. Grounded in the Shulman’s pedagogical content knowledge framework, research questions were designed to ask college instructors to describe how they prepare their students to integrate and assess writing as well as how the teachers described how their …
Measurement Of Simplified Template Cross Sections Of The Higgs Boson Produced In Association With W Or Z Bosons In The H → B[] Decay Channel In Proton-Proton Collisions At √S =13 Tev, A. Tumasyan
Kenneth Bloom Publications
Differential cross sections are measured for the standard model Higgs boson produced in association with vector bosons (W, Z) and decaying to a pair of b quarks. Measurements are performed within the framework of the simplified template cross sections. The analysis relies on the leptonic decays of the W and Z bosons, resulting in final states with 0, 1, or 2 electrons or muons. The Higgs boson candidates are either reconstructed from pairs of resolved b-tagged jets, or from single large-radius jets containing the particles arising from two b quarks. Proton-proton collision data at √s = …
Visible-Light Photocatalytic C-H Amination Of Arenes Utilizing Acridine-Lewis Acid Complexes, Matthew R. Lasky, En Chih Liu, Matthew S. Remy, Melanie S. Sanford
Visible-Light Photocatalytic C-H Amination Of Arenes Utilizing Acridine-Lewis Acid Complexes, Matthew R. Lasky, En Chih Liu, Matthew S. Remy, Melanie S. Sanford
Chemistry Faculty Research & Creative Works
This report describes the development of a visible-light photocatalytic system for C(sp2)-H amination that leverages in situ-generated photocatalysts. We demonstrate that the combination of acridine derivatives and Lewis acids form potent photooxidants that promote the C-H amination of electronically diverse arenes upon irradiation with visible-light (440 nm). A first-generation photocatalyst composed of Sc (OTf)3 and acridine effects the C-H amination of substrates with oxidation potentials ≤ +2.5 V vs SCE with pyrazole, triazole, and pyridine nucleophiles. Furthermore, the simplicity and modularity of this system enable variation of both Lewis acid and acridine to tune reactivity. This enabled …
Molecular-Level Studies Of Nanopatterned Biomolecules With Atomic Force Microscopy, Ashley R. Walker
Molecular-Level Studies Of Nanopatterned Biomolecules With Atomic Force Microscopy, Ashley R. Walker
LSU Doctoral Dissertations
Atomic force microscopy (AFM) is an analytical technique in which a tipped probe is gently scanned across the surface in a raster pattern to generate digital images of a sample at the nanoscale. The AFM instrument has three general operational modes, which are contact, non-contact and tapping-mode, that can be used to examine materials at the atomic level. Single-molecular details of biological molecules and other soft organic materials can be captured with minimal denaturation in either ambient or liquid environments when using tapping-mode AFM. In tapping-mode, the probe is driven to oscillate vertically while the tip is scanned across the …
How Does Pepsico Manage To Navigate In A Market Characterized By Intense Competition?, Thor K. Søndergǻrd
How Does Pepsico Manage To Navigate In A Market Characterized By Intense Competition?, Thor K. Søndergǻrd
Journal of Global Awareness
This research article is about PepsiCo's evolution, supply chain, and how they manage in a market characterized by intense competition. PepsiCo has grown into a strong global company with a diverse portfolio. Positioned in competitive beverages and snacks markets, the company faces a lot of competition but manages to maintain its market position and continues to generate market share. The "PepsiCo Way" initiative focuses on optimizing the supply chain for effectiveness, strength, and sustainability. While navigating challenges, including the trend toward healthier options, PepsiCo continues to adapt and innovate for future success.
Equality In Programming For Girls And Boys: Adolescents' Shared Experiences From An After-School Support Program In Urban Nairobi, Nelson Muhia, Benta Abuya
Equality In Programming For Girls And Boys: Adolescents' Shared Experiences From An After-School Support Program In Urban Nairobi, Nelson Muhia, Benta Abuya
Journal of Educational Research and Practice
There has been marked progress in access to education, representation of women in leadership, sexual reproductive health, and gender-based violence as a result of gender equality initiatives. However, there is still a strong focus on interventions targeting girls only. Through the adolescents’ lens, this study sought to establish if there is a preference for interventions targeting girls compared to boys in two urban informal settlements; and what benefits were realized from programming for both adolescent boys and girls enrolled in an after-school support program. We employed a thematic analysis approach to answer the research questions. Results showed that most interventions …