Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Social and Behavioral Sciences (753)
- Arts and Humanities (723)
- Education (389)
- Physical Sciences and Mathematics (265)
- Geography (251)
-
- Engineering (226)
- History (212)
- Life Sciences (194)
- Earth Sciences (115)
- Sociology (113)
- Religion (110)
- Medicine and Health Sciences (103)
- Art and Design (98)
- Business (94)
- Mormon Studies (93)
- Anthropology (81)
- English Language and Literature (77)
- Public Affairs, Public Policy and Public Administration (67)
- Geology (65)
- Communication (62)
- Psychology (61)
- Environmental Sciences (60)
- History of Art, Architecture, and Archaeology (59)
- Computer Sciences (58)
- Educational Administration and Supervision (56)
- Civil and Environmental Engineering (55)
- Curriculum and Instruction (55)
- Fine Arts (55)
- Biology (53)
- Public Health (53)
- Institution
-
- University of North Dakota (947)
- Brigham Young University (484)
- University of South Carolina (468)
- Mississippi State University (326)
- Virginia Commonwealth University (308)
-
- American University in Cairo (246)
- City University of New York (CUNY) (213)
- Air Force Institute of Technology (187)
- Illinois State University (159)
- Pepperdine University (134)
- Rowan University (119)
- University of Texas Rio Grande Valley (78)
- St. John's University (60)
- University of Arkansas Little Rock (56)
- Columbus State University (52)
- Florida Institute of Technology (44)
- Nova Southeastern University (22)
- University for Business and Technology in Kosovo (16)
- SASTRA Deemed to be University (12)
- Texas A&M International University (10)
- UAlaska System (3)
- Seattle Pacific University (2)
- Keyword
-
- North Dakota (93)
- History (74)
- Education (73)
- GIS (62)
- Utah (56)
-
- United States (46)
- Remote sensing (39)
- Gender (33)
- South Carolina (33)
- Dissertations (EdD) -- Organizational leadership (31)
- Egypt (31)
- Geography (28)
- Identity (28)
- Women (27)
- Leadership (26)
- Social and Behavioral Sciences, Geography (25)
- Migration (23)
- Mormons (21)
- Rural (21)
- Sustainability (21)
- Agriculture (20)
- Development (20)
- Land use (20)
- Mormon Church (20)
- Business education (19)
- Community (19)
- Feminism (19)
- Geographic information systems (19)
- Mexico (19)
- Race (19)
- Publication Year
- File Type
Articles 421 - 450 of 3946
Full-Text Articles in Entire DC Network
Positioning, Navigation, And Timing (Pnt) Study For Select Multibody Environments, Kaitlin R. Roberts
Positioning, Navigation, And Timing (Pnt) Study For Select Multibody Environments, Kaitlin R. Roberts
Theses and Dissertations
In the renewed 21st-century race to the Moon, the demand for heightened mission capabilities in the cislunar region, lunar surface, and beyond is imperative. With an escalating number and complexity of lunar missions, persistent positioning, navigation, and timing (PNT) capabilities are becoming paramount. This thesis presents innovative lunar PNT architectures designed to provide continuous coverage of the lunar South Pole, near-continuous coverage of the entire lunar surface, and coverage of the Earth-Moon Corridor. As space faring countries advance from lunar exploration to Mars, similar assets are essential for astronaut exploration in this extraterrestrial environment. Additionally, this thesis introduces and meticulously …
A Comparative Study Of The Business Models Used In The U.S. And Saudi Arabia Firms In Relation To Venture Capital, Abdulmajeed Ali Alkthiri
A Comparative Study Of The Business Models Used In The U.S. And Saudi Arabia Firms In Relation To Venture Capital, Abdulmajeed Ali Alkthiri
Theses and Dissertations
While venture capital (VC) has expanded globally, challenges in comparing international VC strategies remain due to data limitations and theoretical variability. This study contrasts VC investment philosophies, support mechanisms, and exit strategies in mature US firms with those in developing Saudi Arabia from 2016-2021. Analyzing fundraising, sector focus, deal volume, and exit outcomes, it finds significant differences attributed to ecosystem maturity, with some convergence in contracting and mentoring. The findings highlight the need for US VC models to adapt strategically in Islamic markets, suggesting regulatory reforms for market development. This research provides guidelines for effective cross-border VC strategy adaptation.
Preliminary Assessment Of Cislunar Disposal Orbits, Ryan M. Sargent
Preliminary Assessment Of Cislunar Disposal Orbits, Ryan M. Sargent
Theses and Dissertations
This thesis investigates the disposal of end-of-life spacecraft from key orbits with a focus on minimizing delta-v expenditure and preventing debris propagation. Simulated Lyapunov and halo orbits around the L2 Lagrange point are analyzed for disposal feasibility. Both impulsive and continuous thrust methods are explored to achieve disposal trajectories. Continuous thrust will be modeled after a Hall thruster utilizing electric propulsion. Leveraging the Circular Restricted Three Body Problem framework, low delta-v cost trajectories are computed, with a multi-level correction algorithm optimizing total delta-v via heteroclinic connections. The study assesses various delta-v amounts for Earth-Moon system escape and evaluates the potential …
An Analysis Of China’S Perceived Geographic Locations Of Interest By Use Of Value Informed Facility Location Models, Layton C. Hedge
An Analysis Of China’S Perceived Geographic Locations Of Interest By Use Of Value Informed Facility Location Models, Layton C. Hedge
Theses and Dissertations
This research examines China and derives insights specific to it and the First Island Chain and the Second Island Chain. In doing so, this research demonstrates a methodology to examine other competitors and their geostrategic interests. In the first phase of analysis, it develops a value hierarchy to depict objectives within subregions of the area of interest and considers four alternative weightings of the value hierarchy. In the second phase of analysis, it applies four location-covering models to assess how the competitor would emplace a range of limited resources to deter and/or control points of interest. Results indicate that land-based …
Simulating Human-Autonomous Aircraft Teams In An Anti-Access Area Denial (A2ad) Environment, Michael Kaminski
Simulating Human-Autonomous Aircraft Teams In An Anti-Access Area Denial (A2ad) Environment, Michael Kaminski
Theses and Dissertations
The role of autonomy has evolved recently, demanding tighter integration between human and autonomous systems, particularly in highly contested A2AD environments. Near-peer adversaries have modernized their integrated air defense systems (IADS), diminishing the current advantages of the United States Air Force. To regain air dominance, efforts like the Collaborative Combat Aircraft (CCA) program are underway, aiming to deploy unmanned autonomous alongside manned next-generation fighter aircraft. This research assesses various operational concepts, focusing on autonomous tactics post-manned fighter loss, strike timing of independent teams, and weapon configuration observability. Using the Advanced Framework for Simulation, Integration and Modeling (AFSIM), an agent-based model …
Optimizing Hub And Spoke Selections For Adaptive Basing In Agile Combat Employment, Alan Heng
Optimizing Hub And Spoke Selections For Adaptive Basing In Agile Combat Employment, Alan Heng
Theses and Dissertations
Advancing technologies and emerging competitors within the Indo-Pacific region have rendered the use of fixed installations for United States Air Force (USAF) operations less than optimal for generating airpower. The adoption of Agile Combat Employment (ACE) is imperative and emphasizes a hub-and-spoke model. However, the methodology for selection of contingency locations remains undecided. Current selection of optimal sites hinges on an optimization framework, employing either rank-based or mathematical approaches that consider various criteria to assess and quantify each location. These criteria are then addressed through objectives and constraints, forming the basis for an effective decision-making process. This paper introduces two …
Predictive Analytics For Military Construction Overruns: A Machine Learning Approach, William D. Hunter
Predictive Analytics For Military Construction Overruns: A Machine Learning Approach, William D. Hunter
Theses and Dissertations
This research focused on analyzing cost and schedule overruns in a specific set of Air Force MILCON projects. Using data from the Built Infrastructure Common Operating Picture (BICOP), several advanced machine learning techniques, including LASSO regression and Random Forest, were applied to uncover patterns and build predictive models. The work sought to enhance the decision-making capabilities and efficiency of project managers within the Air Force through data-driven insights. A key finding from the models indicated that location was the most important factor in influencing a project’s tendency toward cost and schedule overrun. The best model for predicting schedule overrun achieved …
Personal Dosimeter Testing For High Altitude Air Crew, Seth D. Bacon
Personal Dosimeter Testing For High Altitude Air Crew, Seth D. Bacon
Theses and Dissertations
In 2014 the Thermo Scientific N2 electronic personal dosimeter became the aircrews’ sole means to record ionizing radiation dose. The production of this dosimeter was discontinued in July of 2021, motivating the Air Force to seek a flight-certifiable replacement. The Thermo Scientific Trudose NG, Mirion DMC 3000, and Fuji NRF-51 electronic personal dosimeters, as well as the Landauer InLight optically stimulated luminescent dosimeter, were subjected to mixed gamma and fast neutron fields simulating a high-altitude flight environment. Dosimeters are evaluated on their consistency and accuracy in reporting dose and compared to the current N2 dosimeter’s reported dose.
Uprooted But Unbroken: Exploring The Experiences Of Yemeni Students At Yemeni Schools In Cairo, Sumood Abdulhadi
Uprooted But Unbroken: Exploring The Experiences Of Yemeni Students At Yemeni Schools In Cairo, Sumood Abdulhadi
Theses and Dissertations
To contribute towards filling the research gap on the experiences of uprooted Yemeni children in Egypt, this phenomenological research was designed to explore the experiences of uprooted Yemeni students in Egypt. Twenty male and female Yemeni students from four Yemeni schools in Cairo participated in semi-structured interviews. The findings revealed that these uprooted children face various economic, social, and academic challenges within the Yemeni schools in Cairo, which seem to hinder their educational progress. Moreover, Yemeni children face difficulties not only within the Yemeni schools in Cairo but also in the streets and Egyptian schools of Cairo. Nevertheless, they appeared …
Moving Through The Violence: Yemeni Migrants And The Reconstruction Of Lifeworlds In Cairo, Jonathan Hearn
Moving Through The Violence: Yemeni Migrants And The Reconstruction Of Lifeworlds In Cairo, Jonathan Hearn
Theses and Dissertations
This Master’s thesis is based on an ethnographic study, following the lives of a small number of Yemeni people rebuilding their lives in Cairo. Their displacement is the consequence of many factors not least the outbreak of war in 2014. In response to this, I ask: In the midst of ongoing conflict, how do Yemeni migrants go about reconstructing their lifeworlds in Cairo? That is, to ask how are Yemeni migrants in Cairo responding to the violent disruption of their social realities and what sense are they making of the consequences. The reorganisation of social realities disrupted by conflict means …
The Implications Of Covid-19 Pandemic On Indoor Environments: Balancing Environmental Considerations And Wellbeing In Higher Educational Facilities, Farah Shoukry
Theses and Dissertations
In this dissertation, the evolving problems concerning Indoor Air Quality (IAQ), and Indoor Environmental Quality (IEQ) in learning environments are examined. The topic is inspired by the COVID-19 pandemic and aspires to document the lessons learned via a vast set of investigations for enhanced IAQ management and control. Specifically, within educational buildings, the challenge remains to better inform the design and management of educational facilities to foster healthier and more sustainable learning environments. There are emerging research topics related to IAQ post the COVID-19 – including but not limited to: architectural design considerations of university classrooms, increase in carbon footprint …
Exploring The Impacts Of Marketing Structure On Enrollment Yield In Higher Education, Mark D. Gibson
Exploring The Impacts Of Marketing Structure On Enrollment Yield In Higher Education, Mark D. Gibson
Theses and Dissertations
The ever-expanding role of marketing and its increasing influence on being a primary driver for colleges and universities to grow awareness and consideration, invite applications, and deliver enrollment yield is more critical and relied on than ever before. The marketing function’s rise to prominence in higher education is fueled by many external forces, including declining federal and state funding, rapid technological advances, changing student expectations, the precipitous reduction in numbers of potential college-aged students, and what this study refers to as the four C's facing higher education. These include consumerism, commoditization, commercialism, and corporatization, each with its own set of …
Improving Post-Secondary Credential Attainment: A Case Study Of Action Research In A Workforce Development Context, Peter James Selden
Improving Post-Secondary Credential Attainment: A Case Study Of Action Research In A Workforce Development Context, Peter James Selden
Theses and Dissertations
The purpose of this study was to understand what environmental, structural, group dynamic, programmatic, intermediate measure, or outcome measure factors influence the effectiveness of action research being used to improve postsecondary credential attainment for the Tulsa Talent Hub team. This case study focused on the perceptions of those team members that were involved in an action research or community-based participatory research project in Tulsa, Oklahoma, which was facilitated by a team of individuals from Impact Tulsa. The researcher examined how each member that was interviewed perceived overall impact and effectiveness of the action research process used. Through qualitative analysis, the …
Analyzing The Effects Of Data Variability & Volume On Predicting Particulate Matter (Pm2.5): Insights From A Machine Learning Approach, Jada A. Macharie
Analyzing The Effects Of Data Variability & Volume On Predicting Particulate Matter (Pm2.5): Insights From A Machine Learning Approach, Jada A. Macharie
Theses and Dissertations
Accurately predicting PM2.5 concentrations are imperative to the future of public health and environmental policies. Machine learning models incorporating spatial and temporal datasets to predict PM2.5 are often limited by data availability constraints and poor resolution satellite imagery.
Native Speakerism In Egypt: The Perceptions Of Non-Native English-Speaking Teachers (Nnests) And Their Employability, Dina Bebars
Native Speakerism In Egypt: The Perceptions Of Non-Native English-Speaking Teachers (Nnests) And Their Employability, Dina Bebars
Theses and Dissertations
Discriminatory hiring practices toward non-native English-speaking teachers (NNESTs) have been researched, debated, and criticized globally. Yet, such recruitment practices are still prevalent in the TESOL field due to perceptions of the linguistic prowess of the native English-speaking teacher (NEST). Given the existence of such practices, this study aims to identify the criteria that employers look for when hiring English language teachers in Cairo, to examine how nativeness is ranked within these criteria, and to investigate if there is a connection between the perceptions of administrators, parents, and teachers regarding NNESTs and hiring practices. A mixed-methods research design was employed to …
Preliminary Investigation Of Urban Quality Of Life: Towards Effective Measurements Of Wellbeing In New Urban Communities In Cairo., Aly Elnady
Theses and Dissertations
This study focuses on investigating Urban Quality of Life (UQoL) in New Cairo as a case study for New Urban Communities (NUCs) in the Greater Cairo Region. The objective of this thesis is to get an accurate description of urban life in NUCs as a distinct mode of urbanization. The study investigates residents’ Subjective Well Being (SWB) and life satisfaction within a wide range of urban life domains, grouped in a conceptual framework of seven sections: Housing & Neighbourhood Quality, Transport & Mobility, Health & Wellness, Education & Employment, Culture & Recreation, Social & Community Support, and Governance & Neighbourhood …
Exploring Ngos’ Perspectives And Their Role In Education Reform In Egypt, Ioanna Moriatis
Exploring Ngos’ Perspectives And Their Role In Education Reform In Egypt, Ioanna Moriatis
Theses and Dissertations
This exploratory study elicits NGO perceptions regarding Egypt’s Ministry of Education and Technical Education’s (MOETE) reform efforts, their interest in participating in education reform and policy advocacy, and their existing relationship with the ministry. Drawing on the findings from semi-structured, in-depth interviews with 13 representatives of education NGOs based in Cairo and Giza, this thesis takes a qualitative approach toward answering the following research question: How do NGOs targeting K-12 youth perceive their role in shaping education reform in Egypt? Despite having to navigate a host of obstacles to accessing public schools and working with the MOETE, the NGOs represented …
The Consequences Of Civil-Military Relations On Civil Wars In The Middle East, Alaa Bahnasy
The Consequences Of Civil-Military Relations On Civil Wars In The Middle East, Alaa Bahnasy
Theses and Dissertations
To unravel the complex dynamics surrounding the outbreak of civil wars in the aftermath of the Arab Spring uprisings, one of the first questions that come to mind is the reason why some Arab countries have witnessed civil wars whilst others have not. The civil-military relations play a significant role in the matter. While much of the existing literature on the causes of civil wars, there is a scarcity of papers that take into consideration the role of civil-military relations. This research focuses primarily on two variables independent variables, namely the civil-military relations and the diversified ethnicities alongside the dependent …
Spectrum Of The Lakes: Unveiling Water Color Of Minnesota's Sentinel Lakes With Satellite Remote Sensing For Water Quality Monitoring., Andrew J. Dooley
Spectrum Of The Lakes: Unveiling Water Color Of Minnesota's Sentinel Lakes With Satellite Remote Sensing For Water Quality Monitoring., Andrew J. Dooley
Theses and Dissertations
Surface waters are precious natural resources requiring costly time and labor for effective water quality monitoring. New applications of water color analysis by satellite remote sensing are a promising approach to water quality monitoring for scientific, industrial, recreational, and cultural benefit. Water color is an inherent proxy of ecological health and water quality. This research expands previous applications of lake water color analysis and pioneers water color chromaticity analysis for midcontinent lakes in Minnesota, USA. The results of this project are the first accounts of Minnesota’s Sentinel Lake water color, variability of water color by ecoregion, and temporal consistency of …
A Case Study Of The Implementation Of The New Clery Act Guidelines, Eunice Adigun
A Case Study Of The Implementation Of The New Clery Act Guidelines, Eunice Adigun
Theses and Dissertations
The Clery Act requires all higher education institutions participating in federal financial aid programs to keep and disclose campus crimes by submitting an Annual Security Report by October 1st of every year. In October 2020, the U.S. Department of Education replaced the 265-page Clery Act guidelines for administrators with a 13-page Appendix with specific changes to geographical locations to include in the report, eliminated the definition of crimes, and limited individuals designated as Campus Security Authority to those with direct responsibilities over student affairs. This case study examined how campus security officers implement the new Clery Act guidelines in crime …
Place-Conscious Vs. Place-Bound, Julie Avetisyan
Place-Conscious Vs. Place-Bound, Julie Avetisyan
Theses and Dissertations
Julie Avetisyan’s installation of sculptures, paintings and printmaking works are driven by an exploration of constructed identity that is not place-bound, but place-conscious. In this paper, she explores how her art practice generates world building under the context of the Armenian Diaspora – considering histories of indigeneity, migration, and assimilation.
The Rise Of Domestic Travel Imagery During Isolation: Looking At The Seclusion Of Japan And England, Tiffany I. Kang
The Rise Of Domestic Travel Imagery During Isolation: Looking At The Seclusion Of Japan And England, Tiffany I. Kang
Theses and Dissertations
This thesis outlines the periods and conditions of isolation, of Japan and England, and how they have contributed to the rise of domestic travel imagery. The limited travel caused by isolation provided a time for interior thinking which resulted in distinct artistic genres central to the identity of both countries.
Scattered Fragments: Art, Architecture, And Archives In Revolutionary Urban Cairo, Mounira M. Makar
Scattered Fragments: Art, Architecture, And Archives In Revolutionary Urban Cairo, Mounira M. Makar
Theses and Dissertations
This thesis analyzes how revolutions impact urban Cairo and its communities, specifically within artistic, architectural and archival practice while acknowledging the central role of public spaces in giving way to such revolutionary practices. Fundamentally, this paper highlights the foundational nature of such practices in developing urban communities.
From Sins Of The Cities Of The Plain To Letters From Laura And Eveline: Boulton, Park, And Pornography’S Reaction To Transmisogyny, Daniel Falco
Theses and Dissertations
This thesis builds on the emerging work of scholars who view pornography as literature with sociocultural relevance and adds to trans scholarship through a dissection of gender construction and transmisogyny in a Victorian underground subversive culture. Centering the 1883 erotic novel Letters from Laura and Eveline, I examine how language and biology are unfixed to highlight fluidity within queer sex and gender, and how this helps the novel evade the taxonomical-obsessed era in which it was produced. I examine its roots in the real historical figures of Ernest “Stella” Boulton and Frederick “Fanny” Park, two crossdressers who were arrested a …
“1000 Acres Of Restricted Land”: The Larger Implications Of Roland Park On Baltimore, From 1891 To The Present, Madison Rose O’Donnell
“1000 Acres Of Restricted Land”: The Larger Implications Of Roland Park On Baltimore, From 1891 To The Present, Madison Rose O’Donnell
Theses and Dissertations
This study addresses the circumstances that led to and the long-term consequences of racially exclusive suburban developments in Baltimore City during the nineteenth and twentieth centuries. In 1891, British investors and urban planners joined together to build the Roland Park District, one of the nation’s first planned suburban neighborhoods to include a racially restrictive covenant. Ideally located on the Chesapeake Bay, Baltimore developed a high-functioning port, which in turn supported westward expansion, progress, industrialization, and immigration. Located just north of Baltimore’s 1888 city limits, which would later expand to absorb Roland Park in 1918, Roland Park was built as an …
The Impact Of Teacher Development, Student Self-Efficacy, And Student Access And Effort On Fourth-Grade Math Achievement, Steven Borst
The Impact Of Teacher Development, Student Self-Efficacy, And Student Access And Effort On Fourth-Grade Math Achievement, Steven Borst
Theses and Dissertations
This study examines the effects of self-efficacy, students’ effort and access to educational resources, and teachers’ development on the achievement of elementary school students in mathematics. Using the 2013 National Assessment of Educational Progress (NAEP) restricted data set, this study determined if and how these three aspects individually and in combination affected performance on the fourth-grade NAEP math assessment. The NAEP is referred to as The Nation’s Report Card, guiding educational practice and policy through the assessment of a large, diverse sample from the entire United States (NAEP, 2013a). This non-experimental study addresses the issues of declining test scores in …
Homeless Encampments On Railroad Property And Their Effect On Crime Rates: A Multiple Methods Analysis, Michael Everett Jones
Homeless Encampments On Railroad Property And Their Effect On Crime Rates: A Multiple Methods Analysis, Michael Everett Jones
Theses and Dissertations
The U.S. homeless population’s size, vulnerability, and crime victim and offender risk merit further investigation. Valuable studies relating to homelessness and crime have been completed. However, there are missing notes in which a sample populace of homeless encampment sites, and subject matter expert opinions are combined into one study. A relationship tradition exists in the criminology research arena between appearance and esthetics levels in areas as visual cues and criminality. Through the decades, variations in crime rates across different settings have resulted in research about setting appearance and changes in frequency of crimes committed there. The purpose of this study …
Implementing Inquiry: A Case Study Of Secondary Science Teachers’ Perceptions Of Curriculum Change, Pamela A. Gordon
Implementing Inquiry: A Case Study Of Secondary Science Teachers’ Perceptions Of Curriculum Change, Pamela A. Gordon
Theses and Dissertations
With the constant strive for higher standards in education, New York State has joined with other states in the nation to develop a new strategy to teach science and 21st-century learning skills to ensure that our children are ready to compete in the global economy. This study sought to determine the current knowledge and perceptions of in-service teachers in New York State regarding the shift in standards from the 1996-based standards to the recently adopted New York State Science Learning Standards (NYSSLS) and their implementation in the classroom. The study aims to help identify the shifts in classroom practices resulting …
Is Proximity Enough? A Case Study Examining A College Access Program On The Grounds Of Public Housing On The West Coast, Nicole S. Berry
Is Proximity Enough? A Case Study Examining A College Access Program On The Grounds Of Public Housing On The West Coast, Nicole S. Berry
Theses and Dissertations
The issue of college access for students from low-income communities has been a longstanding challenge in American higher education. Despite numerous efforts to address the gaps in college attendance and graduation rates between students from low-income and more affluent communities, the problem remains present. This has led to a need for an in-depth analysis of college access programming explicitly tailored to low-income communities, particularly those residing in public housing authorities. The Department of Housing and Urban Development (HUD, 2016) has recognized this need by funding and piloting college access programs in several public housing authorities around the United States. These …
The Potential Relationships Between Utilizing Quarterly Assessments For Assessing Adolescents’ English Skills As A Predictive Indicator Of Students English Lanugage Arts Regents Scores, Tyler John Aracena
Theses and Dissertations
This quantitative research study aimed to evaluate the effectiveness of quarterly assessments administered quarterly to students in a large school district in the northeastern United States and their impact on students’ subject-specific corresponding Regents Examination Scores. The study aims to determine if a correlational relationship exists between the independent variable, students’ scores on quarterly assessments, and the effect on the dependent variable, students’ scores on the English Language Arts Regents examination. The conceptual framework supports this research, whereas a model represents the theory that the independent variable impacts the dependent variable. This research is grounded in a critique of the …