Digital Commons Network^™

Founder Worship, Effective Altruism, And Corporate Governance, Jennifer S. Fan, Xuan-Thao Nguyen

Kentucky Law Journal

No abstract provided.

Sincerely, Harriet [Book Review], Isaiah Mark Roby

Disability in LIS (DisLIS)

"Sincerly, Harriet" follows Harriet as she moves to a new city and her adventures trying to adjust to her new neighbor, her new family dynamic, and her new diagnosis.

Blindness Through The Looking Glass [Book Review], Mollie Frazier

Disability in LIS (DisLIS)

This review analyzes Gili Hammer’s Blindness Through the Looking Glass: The Performance of Blindness, Gender, and the Sensory Body. This book offers insight into the lives of blind women in Israel and challenges assumptions about beauty, femininity, and gender through interviews and years of Hammer's fieldwork as an anthropologist. She shows how blindness is not defined by what is missing, but by how women use their experiences to shape their own understandings of gender and society. The book explores gender identity, visual culture, and the sensory body, highlighting how blind women navigate a world so centered on visual beauty while …

In-Situ Determination Of Tension Zone Of Sediments By Using Dynamic Light Cone Penetration Test: Tropical Sediments In Tanzania, Francis K. Mutabazi, Gabriel D. Mulibo, Dalmas L. Nyaoro, Keneth Lupogo

Tanzania Journal of Engineering and Technology (TJET)

Dynamic probing of the light hammer (DPL) has been analysed by plotting the penetration index (blows per 10 cm penetration depth). The information obtained provides vital insight into ground profile variation. However, the results presentation and analysis have not been sufficiently investigated in ascertaining more information on the ground properties; therefore, focus on additional analysis techniques are needed to reveal further ground information. This paper aims at exposing the potential of using total penetration blows plots for examining the ground characteristics, narrating procedure for such graphical analysis. The analysis of the results, using total blows on linear and log scales, …

Design And Testing Of Adaptable Piston Damping Mechanism For Rapid Compression Machine, Myeji C. Materego

Tanzania Journal of Engineering and Technology (TJET)

A Rapid Compression Machine (RCM) is, essentially, a piston housed inside a cylinder. Its main objective is to compress a combustible mixture as rapid as possible to a higher temperature and pressure at which its auto ignition characteristics can be studied. Such machines are useful in the study of engine fuels autoignition behaviour because they provide a good representation of a single stroke compression ignited engine. There are various designs and operation techniques of RCM, but they all have to possess a key characteristic of compressing the fuel mixture rapidly while producing minimum heat and mass loss, turbulence and pressure …

Steady Flow Over A Plate With Variable Fluid Properties In The Presence Of Magnetic Fields And Thermal Radiation, Jonas A. James, Makungu J. Ng'oga, Augustino I. Msigwa, Ahmada O. Ali

Tanzania Journal of Engineering and Technology (TJET)

The study examines a steady convective boundary layer flow model influenced by magnetic fields and variable fluid properties over the inclined plate. The governing model system of non-linear partial differential equations is transformed into a system of coupled non-linear ordinary differential equations through similarity transformations. These transformed equations are then solved numerically using the fourth-order Runge-Kutta method combined with the shooting techniques using MATLAB package because it is efficiency, stable and converge to the expected solutions compared with other methods. The numerical results detail the fluid velocity, temperature, concentration, and the local Sherwood number, Nusselt number, and skin friction coefficient …

Affordability And Usability Of Digital Learning Resources In Higher Education: A Case Of Online Mathematics Tutorials For Engineering Students At The University Of Dar Es Salaam, Fatuma S. Ikuja, Idrissa S. Amour, Abdi T. Abdalla

Tanzania Journal of Engineering and Technology (TJET)

Effective learning requires engagements with both learning contents and instructor’s personalized support. Large class sizes often limit opportunities for personalized instruction and timely feedback. Digital resources offer a viable solution to enhanced engagement and independent learning. This study investigated the affordability and usability of online digital learning resources for mathematics tutorials, specifically targeting engineering students at the University of Dar es Salaam. A quasi-experimental research design was adopted, focusing on digitization of undergraduate course: Matrices and Basic Calculus for Non-Majors (MT161). The course was delivered through the Moodle Learning Management System integrating STACK to support Mathematics questions. Data was collected …

Denoising Low Dose Ct Images Using Enhanced Autoencoder Deep Learning Model: A Phantom Study, Ali O. Masoud, Khamis O. Amour, Ahmed M. Jusabani, Adithya Rajnaryanan, Manoj Kumar, Yasir M. Haji, Mwingereza J. Kumwenda

Tanzania Journal of Engineering and Technology (TJET)

Reducing radiation dose in Computed Tomography (CT) inherently leads to increased image noise, which can compromise clinical interpretation. To address this limitation in Low Dose CT images (LDCT), numerous computational techniques particularly convolutional neural networks (CNN) have been explored for CT image enhancement. Various CNN architectures with different convolutional layer designs have been developed to improve image quality. This study evaluates the effectiveness of a developed CNN-based autoencoder for denoising LDCT images while preserving diagnostic integrity. An end-to-end CNN autoencoder with information bottleneck (IB) pipeline was designed and trained using CT phantom images with varying noise levels, aiming to suppress …

Space Vectors Discretization-Based Direct Torque Control Scheme For High Performance Induction Motor Drives, Francisco Balenga, Francis Mwasilu

Tanzania Journal of Engineering and Technology (TJET)

In this paper, a direct torque controller (DTC) based on discretization of space vectors (DSV-DTC) for induction motor drives is proposed. By using this technique, the number of voltage vectors is increased, consequently it reduces the torque ripple compared to the conventional DTC control scheme. Specifically, the switching table of the proposed DSV-DTC scheme is comprised of thirty-six nonzero voltage vectors compared to the six voltage vectors in the conventional DTC scheme. Furthermore, it makes use of a five – level torque hysteresis comparator instead of three-level of the conventional DTC. The performance of the proposed control scheme is validated …

Dynamic-Based Assessment Of Shear Connectors In Composite Bridges With Data Taken From The Surface Of The Deck Slab, Emmanuel S. Leo

Tanzania Journal of Engineering and Technology (TJET)

Most bridge management systems generally rely on visual inspections for condition assessment; this means that damage in inaccessible parts of the structure, such as shear connectors in concrete composite bridges, can remain undetected until failure occurs. Localised non-destructive techniques are limited to small areas, time-consuming, and require prior knowledge of the damaged zone. These limitations can be overcome by using dynamic-based techniques. This study aims to investigate experimentally the efficiency of dynamic-based techniques in assessing the condition of shear connectors based on measurements taken from the surface of the deck slab. The study involved the construction of five composite beam …

Lean Manufacturing Implementation Barriers For Micro, Small And Medium Industries In Tanzania: Fuzzy Analytical Hierarchy Process, Juma M. Matindana, Francis D. Sinkamba, Mussa I. Mgwatu

Tanzania Journal of Engineering and Technology (TJET)

With rising global competition, manufacturing industries are adopting Lean Manufacturing (LM) to stay competitive. However, LM implementation in Africa, especially among micro, small, and medium industries (MSMIs), remains low, with research estimates at just 1%. This study examines the barriers to LM implementation in Tanzanian MSMIs. Data were collected from 243 respondents using survey research and purposive sampling. Descriptive and inferential statistics using SPSS version 27.0.1, along with the Fuzzy Analytical Hierarchy Process (FAHP), were used for analysis. The top five LM barriers for micro industries are lack of training on LM tools, poor understanding of lean philosophy, high investment …

Estimation Of Crop Water Requirements And Irrigation Demand For Maize And Rice In Morogoro, Tanzania Using The Cropwat 8.0 Model, Regina Pasiani, Johnson Mangesho, Paul Ts Limbu

Tanzania Journal of Engineering and Technology (TJET)

This study assessed the crop water requirements (CWR) and irrigation demands of maize and rice in Mvomero District, Morogoro Region in Tanzania, under varying seasonal rainfall and soil conditions. Using the CROPWAT 8.0 model, agrometeorological parameters such as temperature, rainfall, evapotranspiration, and effective rainfall were integrated with crop-specific characteristics and soil properties to simulate irrigation demands and quantify water needs across different crop phenological stages. The analysis employed decadal climatic data and crop coefficients (K_c) to simulate both the net and gross irrigation requirements. The findings revealed that maize, cultivated predominantly on red loamy soils, had a seasonal …

Impacts Of Climate Variability On Hydrological Response And Water Resources: Case Of Little Ruaha Catchment -Tanzania Using Ground And Chirps Data, Florence H. Mahay, Patrick C. Valimba, Madaka H. Tumbo, Fides J. Izdori, Leonard Maketa

Tanzania Journal of Engineering and Technology (TJET)

The Little Ruaha River catchment in Tanzania is increasingly affected by climate variability, with implications for agriculture, hydropower, and water supply. This study evaluates the effects of climate variability on rainfall and streamflow and assesses the usefulness of satellite-based rainfall data for hydrological modeling. Thirty-year records (1991–2020) of rain gauge and river flow data were analyzed using the Mann–Kendall test, and the HBV rainfall–runoff model was run with both gauge and CHIRPS satellite rainfall inputs. Annual rainfall exhibited no significant trends at most stations (p > 0.05), except for a notable decline at one eastern site. Seasonal rainfall and streamflow showed …

Numerical Simulation Of Corner Reinforced Concrete Column-Beam Joint With Differential Concrete Grades And Steel Fibres Under Monotonic Loading, Daudi S. Augustino, Emmanuel Safari Leo

Tanzania Journal of Engineering and Technology (TJET)

Structural elements are composed of joints that are essential for force transfer. In particular, for concrete structures, the column-beam joint is an integral section that requires insight due to the traditional use of different concrete grades, forming a strong-column-weak-beam (SCWB) system. A numerical model of the joint was developed in Abaqus to explore the axial load performance and damage tolerance of corner column-beam joints with different concrete grades under monotonic static loading. A concrete-damaged plasticity model (CDPM) was used to model the damage behaviour of concrete, utilising the available strain-stress models in literature and EuroCode 2. Results show that concrete …

Cost Of Safety: Evidence From Building Construction Projects In Tanzania, Juma M. Matindana, Kamugisha J. Kajumulo, Fatma K. Mohamed

Tanzania Journal of Engineering and Technology (TJET)

Cost of safety is a condition where a project determines the magnitude to which its resources are used for activities that prevent poor safety outcomes, that appraise the safety quality of the project services, and that result from safety failures. Reducing the cost of safety remains a major challenge in Tanzania's construction industry and reflects trends in many developing countries. A positive safety environment in which projects reduce costs associated with safety performance is critical to project success. This study investigates the cost of safety of building construction projects in Tanzania. The questionnaire was distributed to 255 contractor companies managing …

In-Depth Review Of Animal Anatomy In Veterinary Medicine, Fatima Ayad Hasan, Sarah Kamal Naser

Al-Bahir

This review explores the significance of animal anatomy across different fields, emphasizing both microscopic and macroscopic structures. The text covers teaching methods in veterinary medicine, with a focus on diagnostics and surgery. It also delves into various anatomical and moral issues, alongside contemporary teaching approaches. The importance of anatomy in both biological and clinical contexts continues to be central in advancing veterinary education, even with the presence of various digital tools and cutting-edge imaging technologies.

Health Implications Of Heavy Metal Contamination In Commercially Available Deodorant And Antiperspirant Products Sold In Benghazi, Libya, Maysson Yaghi, Khaled Elsherif

Al-Bahir

The extensive usage of deodorants and antiperspirants raises concerns about the potential health risks posed by heavy metal content. This study quantified the levels of five heavy metals: Aluminum, Zirconium, Lead, Cadmium, and Chromium in 22 commercial products widely used in Benghazi, Libya, and assessed the associated health risks. Samples, categorized into gel, stick, and roll-on formulations, were analyzed using iCAP TQ ICP-MS. Al and Zr showed the widest concentration ranges, reflecting their intentional use as active ingredients. Al levels ranged from trace amounts (0.032 mg/kg) up to a maximum of 99.10 mg/kg, while Zr was found exclusively in gel …

Takotsubo Cardiomyopathy In A 55-Year-Old Female With Atypical Chest Pain And A History Of Autoimmune Disease, Carrie Greene, Dana Mathew

Florida Journal of Emergency Medicine (FJEM)

A 55-year-old woman with rheumatoid arthritis and supraventricular tachycardia presented with acute chest pain radiating to the back/left shoulder, with nausea and lightheadedness. Initial ECG showed inferior–lateral ST-segment elevation with reciprocal depressions; within 90 minutes the STE resolved with new incomplete RBBB and diffuse low voltage. High-sensitivity troponin rose (delta ~270 ng/L). Point-of-care and formal echocardiography revealed LV wall-motion abnormalities. Emergent catheterization showed no obstructive CAD (<30% distal OM) with apical ballooning and EF 40–45%, consistent with Takotsubo cardiomyopathy; cardiac MRI confirmed myocardial edema. She was managed with anticoagulation initially, telemetry, and supportive care, and recovered uneventfully with normalization of function on follow-up.

ED Takeaways

• TTC can mimic STEMI with transient STE and conduction changes.

• Troponin rise + non-obstructive coronaries should prompt consideration of TTC.

• Consider TTC in post-menopausal women and those with autoimmune disease; use …

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Meningococcemia In Boy With Dense Deposit Disease Receiving C5 Complement Inhibitor Ravulizumab, Andrew Gonedes, Alexandra Martinez, Allan M. Greissman, Hanan Atia, Eric Boccio

Florida Journal of Emergency Medicine (FJEM)

No abstract provided.

Complete Atrioventricular Block In A Heart Transplant Recipient, Jalyn Joseph, Morgan Reel, Eric Boccio

Florida Journal of Emergency Medicine (FJEM)

Complete atrioventricular (AV) block, though uncommon in heart transplant recipients, is a potentially life-threatening condition that demands rapid diagnosis and management in the acute care setting. During complete AV block, there is a failure of electrical conduction from the atria to the ventricles resulting in the independent and dyssynchronous contraction of the heart chambers. Due to the resultant decrease in cardiac output, patients may experience lightheadedness, fatigue, shortness of breath, syncope and near syncope, and, in severe cases, cardiogenic shock may develop. A 58-year-old female with past medical history including hypertension, diabetes, chronic kidney disease, and congestive heart failure and …

Distinguishing Acute Cardiac Events From Chronic Troponin Elevation: Integrating High-Sensitivity Troponin Trends With Objective Ischemic Evidence Under The 4th Udmi Across Diverse Renal Function Profiles, Aidan Fernandez, Amanda Green, Silvija Milanovic, Eric Han, Asia Elbooz, Michael Petrauskis, Justin Nippert, Michael Marchick, Nicholas Maldonado, Mohammed Ruzieh, Elizabeth Warren, Matthew Shaw, Lars Beattie, Brandon Allen

Florida Journal of Emergency Medicine (FJEM)

The Fourth (4th) Universal Definition of Myocardial Infarction (UDMI) provides a standardized framework to enhance diagnostic accuracy and clinical decision-making. However, challenges can arise due to the use of subjective clinical assessment in diagnostic criteria or in the presence of impaired renal clearance. This study modifies the 4th UDMI by requiring objective ischemic evidence to improve consistency in myocardial infarction (MI) classification and applies it across diverse patient populations.

In this retrospective study, patients who presented to the emergency department (ED) with 99th percentile high sensitivity cardiac troponin (hs-cTn) values were classified using the modified 4th UDMI into the categories …

Unexpected Companions: Appendicitis And Bilateral Testicular Torsion, Jc Alvarenga, Melissa Kirk, Michelle Osorio-Rodriguez

Florida Journal of Emergency Medicine (FJEM)

Abdominal pain is a frequent chief complaint in the emergency department (ED), responsible for 5% of all visits yearly. Despite emergency room work ups, 25% of these cases go undiagnosed. In the pediatric population, abdominal pain can be even harder to differentiate with causes ranging from low acuity constipation to emergent surgical emergencies like torsion or appendicitis. During these visits, the likelihood of two emergent surgical diagnoses occurring concurrently is a rare and often overlooked occurrence.

This case describes a 15-year-old male with a chief complaint of nausea and vomiting starting several hours prior to arrival. In the ED, history, …

Caring More For Our First-Year, First-Generation And Low-Income Students: Perceptions Of Barriers And Transitional Success, Joshua Burns

Journal of Access, Retention, and Inclusion in Higher Education

First-generation and low-income (FGLI) students often encounter challenges during their transition into higher education, including limited access to institutional knowledge, social networks, and financial resources. While many colleges and universities offer targeted programs to support FGLI populations, not all eligible students enroll in or engage with these initiatives. This qualitative phenomenological study explores the lived experiences of first-year, nonprogrammatic FGLI students who are not actively participating in formal support programs to better understand how they navigate the transition to college. Through in-depth interviews, the study investigated the types of support these students seek independently, the institutional and social barriers they …

Building Resilience One Connection At A Time: A Guide To Developing Retention Programming On College Campuses, Stephanie Sibley, Rachel Daltry

Journal of Access, Retention, and Inclusion in Higher Education

Despite college students having the potential to be more socially connected than ever before thanks to technology and social media, many students still struggle with isolation, loneliness, and a lack of belongingness and community. These feelings and experiences not only increase the risk for suicidal behavior and diminish resilience, but they can also negatively impact student retention. Outreach programming that targets social connectedness will be described. Specific guidelines developed from first-hand experiences with implementing such programming will be highlighted, and readers will be encouraged to consider how similar programming could be implemented by various offices or personnel at their own …

Bridging The Gap: Exploring The Impact Of Graduate Preparation Programs On Undergraduate Stem Students, Faika Tahir Jan, Thomas Nelson, Travis Chan, Tremayne O. Waller, Cynthia Hampton, Sherif Abdelhamid

Journal of Access, Retention, and Inclusion in Higher Education

This study explores the impact of the "A Step to the Doctorate" (S2D) program on the academic trajectories of undergraduate STEM students, focusing on how it fosters academic success and prepares participants for graduate education. Drawing on data from pre and post surveys and semi structured interviews of 60 participants, the research addresses two primary questions: (1) Which program components do participants find most impactful? Moreover, (2) How has the program influenced their academic aspirations and preparedness for graduate school? The findings highlight that mentorship, peer networking, and targeted workshops are key in boosting academic self-efficacy and enhancing participants’ confidence …

The Success Equation: Scaling The Pivot Framework For Stem & Healthcare Student Success, Ryan Clark, Jarrod Lockhart

Journal of Access, Retention, and Inclusion in Higher Education

Student success in STEM and healthcare increasingly depends on intentional design of equitable, scalable pathways that integrate structured programming, immersive experiential learning, and modern workforce-aligned upskilling. This manuscript introduces the PIVOT Framework— Pathways, Innovation, Vision, Opportunity, and Transformation—as a comprehensive, evidencedriven model for reimagining student success strategies in STEM and healthcare education. The framework emphasizes early engagement, longitudinal support, and competency-based preparation, ensuring students develop the skills and professional identities necessary for success. Drawing from a range of high-impact practices—including paid internships, research-based learning experiences, mentoring structures, digital skills integration, and stackable credentialing—the manuscript demonstrates how coordinated institutional strategies improve …

The Power Of Intentional Programming: Amplifying Student Voices As A Catalyst For Student Engagement At Hbcus, Jason D. Etheridge

Journal of Access, Retention, and Inclusion in Higher Education

Student engagement is a critical factor in retention and success, particularly at Historically Black Colleges and Universities (HBCUs). This study explores the development and implementation of intentional programming designed to foster inclusion, leadership, and academic success at an HBCU in the southeastern United States. Using a student-centered approach, initiatives such as leadership conferences, study halls, and identity-affirming programs were developed to address gaps in student engagement. Through qualitative data collection and student feedback analysis, findings suggest that integrating student voices into programming enhances institutional responsiveness, strengthens campus culture, and improves retention. This study highlights best practices, challenges, and implications for …

Mentoring Through A Cultural Lens: Faculty Mentorship Experience In The Bunche Fellows Undergraduate Research Program, Audrey Devost, Passion Lord, Kiana Billot-Vasquez, Zeyna Faucette, Ketema Paul, Walter Allen

Journal of Access, Retention, and Inclusion in Higher Education

This manuscript explores the significance of faculty mentorship in underrepresented student success within a culturally engaged on-campus research program. Drawing on data derived from the Pathways Through Research case study, a mixed-methods empirical study of the Bunche Fellows Program at the University of California, Los Angeles, this paper centers student voices to better understand the manifestations of cultural engagement among faculty mentoring experiences, and how these cultural experiences shape student development among the program’s alumni. Guided by Critical Race epistemology and the Culturally Engaging Campus Environments (CECE) Model, this research highlights the effectiveness of mentoring relationships within a structured on-campus …

Rethinking Academic Integrity: Deconstructing Academic Norms In A Technologically And Culturally Shifting Lanscape, Ilknur Sancak-Marusa

Journal of Access, Retention, and Inclusion in Higher Education

The rise of generative AI use in higher education calls for a critical reexamination of academic integrity, revealing its culturally-constructed and context-dependent nature. While institutions scramble to create generative AI policies, many rely on Western-centric definitions of integrity that overlook the diverse cultural and linguistic students’ backgrounds. Traditional frameworks often misunderstand behaviors like patchwork writing or collaborative learning, viewing them as misconduct rather than culturally influenced practices. This paper argues that academic integrity standards differ across cultures and institutions rather than follow universal principles. As generative AI further complicates ideas of authorship and originality, institutions must move beyond punitive responses …

Foreword, Orikideh Mohajeri

Journal of Access, Retention, and Inclusion in Higher Education

No abstract provided.