Digital Commons Network^™

Heterogeneity Mechanism And More Precise Prediction Of Seafarer Fatigue Based On Group Modelling, Zhiwei Zhao, Anqi Quan, Shuxin He, Lijun Tang, Xinjian Wang, Wessel M.A. Van Leeuwen

Plymouth Business School

Traditional research often treats seafarers as a homogeneous group when exploring the causes of fatigue, neglecting the potential heterogeneity in fatigue mechanisms arising from differences in rank and department. This study systematically analyzes the fatigue driving patterns of four subgroups – Deck Department vs. Engine Department, and Officers vs. Ratings – and constructs high-precision prediction models. Based on questionnaire survey data from 450 seafarers from two Chinese shipping companies, Exploratory Factor Analysis was conducted to extract group-specific factors. Subsequently, Multiple Linear Regression and Backpropagation Neural Network models were established to identify key influencing factors and compare predictive performance. The results …

Using Social Return On Investment To Evaluate Services That Support The Health Of People Experiencing Homelessness In Australia: A Scoping Review, Cate Mckenna, Christopher Rouen, Mary O'Loughlin

Research outputs 2022 to 2026

The increasing demand for homelessness services in Australia highlights the need for robust evaluation methodologies to assess their social impact. Traditional economic evaluation methods often struggle to capture the intangible social and health outcomes associated with homelessness. Social return on investment (SROI), an outcomes-based framework driven by stakeholders, offers a flexible and comprehensive approach to measuring social, economic and environmental impacts. This scoping review examines the application of SROI in evaluating services that support the health of people experiencing or at risk of homelessness in Australia. A total of 25 reports from grey literature (2010-2023) were reviewed. The findings reveal …

“Between Cultural Norms And Economic Survival: Navigating Egyptian Lower And Middle Income Women’S Challenges In The Informal Versus The Formal Work: “A Case Study From Cairo”, Rowan Mahmoud Abdelnazer

Theses and Dissertations

This study investigates the ongoing gender inequities experienced by low and middle-income women in Egypt’s formal and informal labor economy, specifically it is based in Cairo. Although there are many advances made globally on women's rights, yet women still face great challenges such as discrepancies in salary, fewer leadership roles and cultural expectations which put child-bearing duties before professional growth. On the one hand, flexible work for women in developing countries is through informal sector, which makes them vulnerable and serves as a source of their exploitation and insecurity (e.g., lack of social security; workplace hazards), on the other hand, …

Towards The Poetics Of Artificial Intelligence: Disrupting Anthropocentrism In I Am Code: An Artificial Intelligence Speaks, Milad Ghazi Saeed

Alustath Journal for Human and Social Sciences

Artificial intelligence (AI) has emerged as a transformative force capable of restructuring anthropocentric assumptions of creativity, identity, subjectivity, and other human attributes. The current study aims to investigate how the poetics of AI firmly defies anthropocentrism through portraying Code-DaVincie-002, a generative model developed by OpenAI, as a self-aware subject. It also aims to inspect how AI, through the lens of Posthumanism, penetrates the barriers between organic and non-organic beings by performing cognitive processes that once were considered the exclusive domain of humans. Methodologically, the study adopts a qualitative textual analysis grounded in a posthumanist reading of selected poems from I …

Thinking Through Critical Metaphor: A Semiotic-Cognitive Study Of Political Caricatures, Sarah Tariq Hashim, Mahmood Atiya Farhan

Alustath Journal for Human and Social Sciences

Political caricature serves as a powerful weapon that help caricaturists to reach their opinion to the public. They are used to criticize the political situations and highlight implicit discourse ideologies in a simple way. The current study explores critical metaphor in constructing ideological meaning in political caricatures from a semiotic-cognitive viewpoint. Although political caricatures have been widely studied, limited attention has been given to the interaction between visual signs and cognitive metaphor in shaping ideological interpretation. The findings show that these metaphors (verbal or visual) are not considered as stylistic tools but as ideological tools. Also, caricatures rely on critical …

The Effect Of The (Predict–Observe–Explain) Strategy On The Achievement Of Eleventh-Grade Students In Kurdish Grammar, Sabah Jalil Khaleel

Alustath Journal for Human and Social Sciences

The present study aims to investigate the effect of the (Predict–Observe–Explain) strategy on the achievement of eleventh- grade students in Kurdish grammar. To achieve this objective, the researcher selected a sample of eleventh-grade students from governmental daytime secondary schools in Kirkuk Governorate. The sample consisted of (50) students distributed into two classes. Class (A) represented the experimental group, comprising (25) students who were taught using the (Predict–Observe–Explain) strategy, while class (B) represented the control group, comprising (25) students who were taught using the traditional method. The researcher ensured equivalence between the two groups in several variables, including intelligence test scores, …

Evaluating Generalization-Enhanced Behavioral Skills Training To Teach Firearm Safety Skills To Children With Autism, Victoria Alvarez

USF Tampa Graduate Theses and Dissertations

Due to the large number of firearm-related incidents and the high percentage of households that own firearms in the United States, it is crucial that children learn firearm safety skills. Although previous research has evaluated various procedures for teaching firearm safety skills to typically developing children, there is a limited amount of research evaluating these interventions for children with autism spectrum disorder (ASD). The current study evaluated the effectiveness of a generalization-enhanced behavioral skills training (BST) procedure, which included varied training settings and tangible reinforcers, to teach firearm safety skills to children with ASD. We evaluated generalization-enhanced BST and in …

Listener Factors In Integrating Syntax And Plausibility In Sentences Produced With Versus Without Stuttering, Gabriella L. Burgess Hayes

USF Tampa Graduate Theses and Dissertations

Purpose: Development of communication-focused therapy for people who stutter requires better understanding of how stuttering impacts oral comprehension. One aim was to investigate how stuttering impacts listeners’ ability to integrate syntax and world knowledge (plausibility) in sentence processing. A second aim was to investigate how listener factors predict ability to integrate information in sentences with stuttering.

Methods: 224 adults heard 24 experimental sentences interspersed with 24 fillers. Experimental sentences included six plausible double-object dative (DO) constructions, six plausible prepositional dative (PD) constructions, six implausible DO constructions, and six implausible PD constructions. Implausible constructions served as analogues of communication breakdowns. Half …

Understanding The Impact Of Minority Stress On Mental Health Among Racially And Ethnically Diverse Adults: Insights From A Daily Diary Study, Ruba S. Rum

USF Tampa Graduate Theses and Dissertations

Minority stressors are theorized to contribute to mental health disparities for racial and ethnic minority individuals. While prior research links distal (i.e., external) and proximal (i.e., internal) minority stressors to adverse psychological outcomes for racial and ethnic minority groups, most studies have relied on cross-sectional designs that limit understanding of the immediate and short-term effects of minority stressors and potential protective factors in daily life. To address this gap, the present study examined the within-person daily associations between distal (interpersonal and vicarious discrimination, microaggressions) and proximal (internalized stigma, anticipation of rejection, identity management) minority stressors and psychological outcomes. Racial and …

Re: Comment Letter For Butte Priority Soils Operable Unit (Bpsou), Draft Intermediate (60%) Remedial Design Report, Blacktail Creek Riparian Actions (Dated March 13, 2026), Emma Rott

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Regional Differences Between Puerto Rican And Hispanic Mainland U.S. Parents’ Perceptions Of Childhood Obesity, Kasandra Blanton

Walden Dissertations and Doctoral Studies

No abstract provided.

Exploring Strategies For Optimizing The Effectiveness And Efficiency Of Inventory Management And Order Fulfillment, Love O. Awoniyi

Walden Dissertations and Doctoral Studies

No abstract provided.

Gamma Belief Functions And Fuzzy Sets And Application To Combining Predictive Models, Liping Liu

University Research

Extending classic finite frameworks to continuous settings, this paper proposes the concept of gamma belief functions and gamma fuzzy sets. It shows that both the combination of gamma belief functions and the intersection of gamma fuzzy sets remain within the gamma family, enabling their application in combining gamma probability judgments in decision making and gamma regression models in ensemble learning. Using both simulated and real datasets, and under both constant and varying dispersion assumptions, experimental results show that the combined gamma regression models closely approximate the reference models learned from the full datasets, aligning with the objectives of bootstrapping. Notably, …

Integrated Decision-Support Framework For Enhancing Coastal Community Resilience Against Hurricane-Induced Hazards, Kooshan Amini, Tanmoy Palit, Abigail L. Beck, Jayant Patil, Tao Lu, Himadri Sen Gupta, Yousef Darestani, Et. Al

Michigan Tech Publications

Coastal communities face escalating threats from hurricanes, necessitating a shift from descriptive risk assessment to prescriptive, optimized portfolio planning to enhance resilience. This study introduces an integrated decision-support framework that couples high-fidelity, multi-hazard socio-physical system modeling with a multi-objective optimization model. The framework quantifies the cascading impacts of hurricane-induced wind, storm surge, and waves on a community’s interdependent buildings, transportation network, and detailed distribution-level electric power network (EPN), along with the resulting population dislocation and long-term recovery. It then identifies Pareto-optimal portfolios of mitigation strategies by simultaneously minimizing three conflicting objectives—economic loss, population dislocation, and recovery time—under various budget constraints. …

Provocation In Philosophical Practice, Kathryn Elizabeth Cook, Sara Dorrego Carreira, Anca-Cornelia Tiurean

Faculty and Staff Publications & Presentations

Challenging conventional notions of comfort and safety in philosophical practice, this article argues for the primacy of reason in the work to provoke and exercise thinking. Exercising thinking involves problematization and conceptualization of cherished ideas and attitudes. Consequently, philosophical consultations can be uncomfortable; rather than seeking to alleviate this discomfort, this article examines it directly. Assumptions that discomfort is harmful, consultation is dangerous, philosophers are therapists, or success is mandated are actively problematized. The authors appreciate the growth promoting role of discomfort, see the beauty of exercising the thinking capacity, and respect the thinking competence of all people. The authors …

Objects Of Atrocity: Material Culture And The Challenges Of Difficult Histories, Robert M. Ehrenreich, Jane E. Klinger, Gabriel H. Pizzorno, Caroline Sturdy Colls

Purdue University Press Books

The vast majority of people throughout history have left few written traces. That is especially the case for those who were brutally forced from their homes, stripped of their possessions, and swiftly imprisoned, enslaved, or murdered. Objects of Atrocity: Material Culture and the Challenges of Difficult Histories addresses how we return humanity to these people in order to avoid their erasure from history. Academics and practitioners from a variety of disciplines and cross-disciplinary approaches grapple with the challenges and possibilities relating to the collection, conservation, storage, and display of objects in the aftermath of mass atrocities. This collection confronts a …

An Instance Segmentation Based Global Mppt Method For Pv Systems Under Partial Shading Condition, Ehab Ur Rahman, Yousef Mahmoud, Rui Bo

Electrical and Computer Engineering Faculty Research & Creative Works

Partial shading in photovoltaic (PV) systems creates multiple Local Maximum Power Points (LMPPs) on the power-voltage (P-V) curve, causing conventional Maximum Power Point Tracking (MPPT) algorithms to converge prematurely to suboptimal operating points and resulting in significant energy losses. This work proposes a novel vision-based framework that integrates computer vision with Global Maximum Power Point Tracking (GMPPT) to maximize energy harvesting in partially shaded PV systems. The proposed method captures real-time imagery of PV panels to identify cell-level shading patterns, which are subsequently mapped to module electrical characteristics to enable direct analytical estimation of the GMPP voltage. An instance segmentation …

Work Precarity, Mental Health, And Performance Among Humanitarian Aid Workers In Egypt Post-2025 U.S. Funding Reduction, Mariam Allam

Theses and Dissertations

The humanitarian sector is increasingly characterized by precarious employment conditions and work precarity, including short-term contracts, unclear renewal terms, inadequate compensation, heavy workloads, and job insecurity, exacerbated by volatile donor funding. The 2025 U.S. funding cuts have intensified these vulnerabilities, particularly in countries like Egypt, with massive humanitarian operations because of being a significant destination for asylum applications and one of the largest refugee host countries. Despite the prevalence of precarious work in the humanitarian sector, limited research examines its effects on workers' mental health and work performance, especially during funding crises. This qualitative study explores the perceived effect of …

Integrative Assessment Of Body Composition And Micronutrient Status In An Adult Egyptian Population, Roua Aref Nouh

Theses and Dissertations

Integrative Assessment of Body Composition and Micronutrient Status in an Adult Egyptian Population: A Functional and Biochemical Approach

Obesity and metabolic dysfunction are increasingly recognized as heterogeneous conditions that cannot be sufficiently characterized by body mass index (BMI) alone. Alterations in body composition, particularly central adiposity and skeletal muscle mass, may coexist with micronutrient imbalances even among individuals who fall outside conventional BMI-based obesity classifications. In clinical settings, such metabolic vulnerability is frequently accompanied by non-specific functional symptoms, highlighting the need for integrative assessment approaches that extend beyond weight-centered metrics. This cross-sectional study aimed to investigate the associations between micronutrient …

Philosophia From Dialectic To Dying Before Death: Traces Of Plato’S Spirit In The Encounters Between The Falāsifa, Mutakallimūn, And Sūfiyya, Fadhil Yunus Alsagoff

Theses and Dissertations

This thesis offers a fresh approach to the question “What is philosophy?” by reconsidering Plato’s vision of philosophiaand seeking its traces in the encounters between the Falāsifa, the Mutakallimūn, and the Sūfiyya of the classical Muslim world. I argue that Plato’s true legacy lies in a vision of philosophia as dialectical inquiry that ultimately leads – due to the inextricable limitations of propositional language – to aporia and what he called “practicing for dying and death.” I then argue that this vision of philosophia finds resonance in the classical Muslim world in the embodied encounters between …

The Experience Of Newly Formed Syrian Female-Headed Households Refugees In Egypt: Challenges And Opportunities, Wasim Dia

Theses and Dissertations

This thesis examines the lived experience of Newly Formed Syrian Female-Headed Households in Egypt. It focuses on how the extended displacement reshapes gender roles, decision-making, and survival strategies. Since the beginning of the Syrian conflict in 2011, extensive family separation, death, disappearance, and male migration have occurred, leading to a significant rise in female-headed Syrian refugee households. As a result, displacement has intensified women’s vulnerability, generating new responsibilities and limited spaces for agency, especially within restrictive legal and socio-economic environments.

Based on in-depth qualitative interviews conducted in 2023, this research explores how Syrian refugee women navigate everyday life in Egypt …

Sense Of Belonging Among Undergraduate Students At The American University In Cairo: Demographic Trends, Barriers And Facilitators, Lamiaa M. Mohamed

Theses and Dissertations

A sense of belonging is widely recognized as a key determinant of undergraduate students’ academic success, well-being, and persistence in higher education. However, existing research is largely grounded in Western contexts and often emphasizes institution-level measures, with limited attention to how belonging is experienced and constructed by students in non-Western settings. This study examines undergraduate students’ sense of belonging at the American University in Cairo, focusing on factors that shape belonging and institutional practices that may strengthen it. Using a sequential mixed-methods design, the study examined 87 responses from a quantitative survey adapted from the University Belonging Questionnaire, followed by …

Scruples Before Religion: Muslim Waraʿ Of The Formative Period, Omar Laaroussi

Theses and Dissertations

This thesis studies the conceptual history of waraʿ and its role as a normative paradigm existing in the formative centuries of the Islamic world. To do so, I consider the Hellenic concepts that ground Near Eastern understandings of virtue and piety before the rise of Islam. This, I then use to contextualise a focused discussion on the textual history of waraʿ before moving on to discuss its properties in a ascetic social-world through the analysis of those very texts. I attempt to place those properties in conversation with modern philosophers’ work on disciplinary regimes and their impacts upon the self. …

Parental Gender Bias In Youth Employment Standards: Evidence From Upper Egypt, Mahmoud Saeed

Theses and Dissertations

Youth unemployment remains a critical challenge in Egypt, with female labor force participation among the lowest globally. While structural factors such as limited job creation and public sector contraction are well-documented, the role of family-level decision-making in constraining women's labor market entry has received limited quantitative attention. This thesis examines parental gender bias in employment standards in Upper Egypt, investigating whether and how parents impose systematically different job requirements for daughters compared to sons. Using primary survey data from 17,284 unemployed youth aged 18-35 across six governorates, paired with responses from their parents, this study analyzes parental preferences across six …

Tuning Ion Mobility And Molecular Confinement In High-Performance Polymer Electrolytes For Energy Storage, Ezzeldien Yousef Muhammed Yousef

Theses and Dissertations

This research addresses the critical energy density limitations of aqueous supercapacitors, which are traditionally constrained by the narrow electrochemical stability window (ESW) of water 1.23 V. By employing two distinct molecular engineering strategies, this study developed high-performance electrolyte systems that significantly extend voltage stability and thermal resilience.

The first system, CsBr@PAM/HA, utilizes a polyacrylamide and hyaluronic acid hydrogel matrix. This system exploits the chaotropic nature of Cs⁺ ions to disrupt the aqueous hydrogen-bonding network, enhancing ionic conductivity to 104 mS cm^-1. Through systematic salt screening, CsBr was identified as the optimal electrolyte, enabling a stable 2.0 V …

Social Identity And Language Learning/Teaching Trajectories: Egyptian English Teachers’ Reflections On Being Taught By Native English- Speaking Instructors, Asmaa Mohamed Badawy

Theses and Dissertations

This study explores how teacher social identity is shaped by Egyptian English teachers’ past learning experiences, particularly in relation to native and non-native English-speaking teachers. It seeks to understand how these experiences influence teachers’ perceptions of themselves within English-speaking contexts and how they make sense of dominant language ideologies surrounding nativeness. The study is guided by the following research questions: how participants perceive their sense of social belonging within English-speaking contexts; how ‘native’ and ‘non-native’ English teachers understand and interpret nativeness; and how past educational and social experiences shape teachers’ sense of ownership and legitimacy. Situated within the framework of …

How Disability Inclusion Shapes Student Experiences In Egyptian Public Universities, Ramez Maher

Theses and Dissertations

The inclusion of students with disabilities in higher education is a critical aspect of equity, social justice, and human rights, particularly in Egypt, where systemic barriers continue to hinder access to education for this demographic. Despite the enrollment of approximately 19.4 million students in 2018, only 38,135 students with disabilities were admitted, highlighting the significant challenges they face in accessing higher education.   Through a qualitative approach employing reflexive thematic analysis, this study explores the interplay of institutional policies, cultural attitudes, and accessibility challenges that affect the educational experiences of students with disabilities in Egyptian public universities. The analysis of 21 …

From Aspiration To Obligation: A Contractual Sustainability Framework For The Egyptian Construction Industry, Salma Ali

Theses and Dissertations

The construction industry is responsible for approximately 40% of global energy consumption and 35% of total waste generation, making it one of the most significant contributors to the global sustainability challenge. In Egypt, that challenge takes a specific contractual form. Egypt’s construction sector contributes approximately 23% of national energy consumption, yet the survey findings reveal that 63.5% of construction professionals report that sustainability clauses rarely or never appear in contracts, and only 11.5% confirm the presence of enforceable provisions with measurable targets. This gap is structural rather than attitudinal. Competitive procurement penalises voluntary sustainability investment, and without contractual obligation, awareness …

The Informal Impact Of The Headscarf Ban On Veiled Students’ Everyday University Experiences In Paris, Farah K. Lotfy

Theses and Dissertations

This study examines the informal impact of the 2004 headscarf ban on the everyday university experiences of veiled students in Paris. Although the ban applies formally to public schools rather than universities, the wider social climate surrounding laïcité and the veil continues to influence how veiled students experience visibility, belonging, and participation in higher education.

Using a qualitative approach based primarily on semi-structured interviews, supported by informal observations conducted within university spaces in Paris, the study explores how exclusion is experienced through stereotypes, scrutiny, social discomfort, self-monitoring, and anticipation of discrimination rather than through formal university policy. The research focuses …

Engineering Nanoelectrocatalytic Systems For Co2 And Nitrate Conversion Into Value-Added Chemicals, Abdelrahman Mohamed Abdelmohsen

Theses and Dissertations

The thesis addresses two major related environmental crises: nitrate pollution of water systems and the ever-increasing levels of atmospheric carbon dioxide. Both challenges are closely linked to anthropogenic disturbance of nitrogen and carbon cycles and require sustainable, energy efficient mitigation techniques. In this study, we investigate electrochemical conversion routes as a unified approach to convert these pollutants into value-added compounds: ammonia (NH3) via nitrate reduction (NO3-RR) and ethylene (C2H4) via carbon dioxide reduction (CO2RR). The first half of this work deals with the design and engineering of Cu-Zn alloy electrocatalysts for efficient NO3-RR. Tuning the alloy composition and surface nanostructure …