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Thermal Energy Storage System Using Silica Sand As Heat Storage Medium: Simulation Of Geita Gold Mine, Santos Kihwele
Thermal Energy Storage System Using Silica Sand As Heat Storage Medium: Simulation Of Geita Gold Mine, Santos Kihwele
Tanzania Journal of Engineering and Technology (TJET)
Currently, Geita Gold Mine (GGM) relies on electrical energy from the national grid and diesel power generators to generate electricity for various industrial applications. The plant currently spends a large amount of money on generating power from diesel generators. The total annual cost of power generation from diesel generators including lubricants is USD 56,057,990. The total annual fuel cost is USD 53,531,805 for a total of 54,985,473 liters per year. Most of the power generated by the generators is consumed in the industrial thermal processes. Thermal energy applications at the plant are thermal drying of the extracted ores to remove …
Fuzzy-Ahp Based Decision Support System For The Selection Of Optimal Maintenance Strategy For Meter Gauge Railway Infrastructure: A Review, Hamisi J. Maulid
Fuzzy-Ahp Based Decision Support System For The Selection Of Optimal Maintenance Strategy For Meter Gauge Railway Infrastructure: A Review, Hamisi J. Maulid
Tanzania Journal of Engineering and Technology (TJET)
There are many uncertainties and complexities associated with maintaining Meter Gauge Railway (MGR) infrastructure, which calls for a methodical approach to decision-making. The development and application of a fuzzy-AHP-based decision support system (DSS) to select the optimal maintenance strategy for the MGR are presented in this study. The review covers research from 2013 to 2023 and focusses on the use of Multi-Criteria Decision Making (MCDM) and Fuzzy Analytic Hierarchy Process (Fuzzy-AHP) techniques in railway infrastructure maintenance. To manage the inherent uncertainties and subjective judgements involved in maintenance decision-making, the Fuzzy-AHP methodology combines fuzzy logic with the Analytic Hierarchy Process (AHP). …
Shared Autonomy Open Logistics Systems: Definitions, Examples, And Related Literature, Jennifer Pazour
Shared Autonomy Open Logistics Systems: Definitions, Examples, And Related Literature, Jennifer Pazour
International Material Handling Research Colloquium
No abstract provided.
The Evolution Of Global Gold And Copper Trade Networks, Oleksandr Hulianskyi
The Evolution Of Global Gold And Copper Trade Networks, Oleksandr Hulianskyi
Northeast Journal of Complex Systems (NEJCS)
Gold and copper have emerged as two of the most vital commodities in global trade. Despite serving distinct purposes, their international trade networks reveal interconnected patterns, critical to understanding the dynamics of global economics. This paper studies these attributes and their evolution during the last 36 years for both metals and finds correlations between them. The first part of the research is focused on the sustainability of networks through efficiency and robustness indexes; the second part is dedicated to interconnectedness – the Louvain and Bayesian SBM algorithms, partition, and modularity instruments are used. Community detection algorithms provide valuable insights into …
Harnessing Generative Ai And Large Language Models For Revolutionizing Cybersecurity In The Internet Of Things: Ethical And Privacy Implications, Harsha Sammangi, Aditya Jagatha, Jun Liu
Harnessing Generative Ai And Large Language Models For Revolutionizing Cybersecurity In The Internet Of Things: Ethical And Privacy Implications, Harsha Sammangi, Aditya Jagatha, Jun Liu
Research & Publications
Generative artificial intelligence (AI) and large language models (LLMs) have in- troduced transformative capabilities in cybersecurity, particularly in securing Internet of Things (IoT) environments. These technologies can synthesize vast datasets, support real-time anomaly detection, and generate predictive insights through simple prompts. However, their deployment also presents ethical and privacy-related concerns, including algorithmic bias, data leakage, and misuse for malicious content creation. This paper conducts a systematic literature review to evaluate how LLMs and generative AI contribute to IoT cybersecurity. We propose an ethical AI-IoT security framework, examine key challenges, and offer recommendations for integrating responsible AI governance. We aim to …
Empowering Tanzanian Education: Personalized And Accessible Test Preparation, Brian Wiebe, Shiv Jhalani
Empowering Tanzanian Education: Personalized And Accessible Test Preparation, Brian Wiebe, Shiv Jhalani
Computer Science and Engineering Senior Theses
Only 20% of students performed well enough on their secondary exams to continue their A-level studies. This challenge exists due to a lack of resources, classroom overcrowding, and absenteeism of the instructors. The project focuses on improving the pass rate for these national exams; we have built an intelligent quiz generating platform that helps Tanzanian students prepare more effectively for exams by meeting user needs including active recall, answer explanations, increasing difficulty, and filtered studying. Students can select the subject, form level, topic, and the difficulty level, and the platform provides different types of questions, including true/false, multiple choice, and …
Enhancing Cybersecurity Based On Blockchain Technology: A Systematic Review, Sarah Mohammed Shareef, Rehab Flaih Hassan
Enhancing Cybersecurity Based On Blockchain Technology: A Systematic Review, Sarah Mohammed Shareef, Rehab Flaih Hassan
Journal of Soft Computing and Computer Applications
Cybersecurity is a crucial component of the security system that guards against unauthorized access to digital transactions. Blockchain is a decentralized ledger used to securely exchange digital currencies and conduct trades and transactions. Blockchain technology has led to significant changes in electronic transactions. The enormous potential is being exploited in many areas such as financial services, real estate, supply chain, and the Internet of Things. Despite being a security system, it has suffered from security threats to sensitive data. Phishing and 51% attacks can circumvent blockchain security, highlighting the need for thorough user education and awareness. Additionally, blockchains based on …
Development Of An Embedded Iot Board For Real-Time Floor Estimation Of Autonomous Robots, Carter J. Sorensen
Development Of An Embedded Iot Board For Real-Time Floor Estimation Of Autonomous Robots, Carter J. Sorensen
Electronic Theses and Dissertations
As service robots become more prevalent in multi-story environments such as hospitals, hotels, and laboratories, accurate floor-level detection is critical to ensuring operational reliability. Consider a robot tasked with delivering medical samples in a multi-story laboratory. Without accurate feedback, a robot exiting on the wrong floor could introduce delays, disrupt workflows, or compromise sample integrity. Internet of Things (IoT) technologies offer a way to address these risks by providing real-time error detection and corrective capability. However, current IoT-based floor estimation systems often require invasive modifications to building infrastructure—particularly elevator control panels. These approaches introduce challenges related to cost, liability, backward …
Evolutionary Influences On Oceanic Islands Parasites: Phylogeography, Genetic Structure, And The “Island Rule” Of Common Ground Doves (Columbina Passerina) And Their Lice, Paige Jordan Brewer
Evolutionary Influences On Oceanic Islands Parasites: Phylogeography, Genetic Structure, And The “Island Rule” Of Common Ground Doves (Columbina Passerina) And Their Lice, Paige Jordan Brewer
Student Theses and Dissertations
Organisms on oceanic island archipelagos often exhibit strong genetic signatures and adaptations. Here, we focus on Common Ground Doves (Columbina passerina) and their parasitic lice, Physconelloides body lice and Columbicola wing lice, across the Caribbean islands to examine phylogeography, population genetics, and the “Island rule”. We used genome-wide sequences and found C. passerina doves and their lice exhibited unique dispersal patterns and phylogenetic relationships; however, similar population structure. We also found distinct patterns of genetic diversity between Physconelloides and Columbicola, likely caused by variations in their dispersal abilities. Additionally, we measured C. passerina specimens and their lice to compare island …
Sideque$T, Akshay Nichani, Anusha Kankipati, Afra Mahammad, Lucas Jablon
Sideque$T, Akshay Nichani, Anusha Kankipati, Afra Mahammad, Lucas Jablon
Computer Science and Engineering Senior Theses
In recent years, the gap between traditional education and the current labor market has widened dramatically: in 2024, 11. 5 % of California’s 16-24 year olds were neither in school nor employed, alongside a net decline of roughly 3 million students nationwide in the last decade and more than 4 million members of Generation Z left the job despite having conventional degrees. These trends underscore a growing disconnect between academic credentials and market-ready skills and a pressing need for alternative pathways to gainful work. We introduce SIDEQUE$T, a secure, user-friendly online marketplace engineered to bridge this divide. By allowing job …
Tellings Of The Pacific Ocean: A Landscape-Based Approach For Multispecies Design And Hci, Maliheh Ghajargar
Tellings Of The Pacific Ocean: A Landscape-Based Approach For Multispecies Design And Hci, Maliheh Ghajargar
Engineering Faculty Articles and Research
Environmental disturbances induced by climate change have caused significant changes in our ecosystems and are threatening the health of our environments. As a response to this issue, a growing body of work has emerged in HCI and design, which seeks to foreground more-than-human stories in support of making more sustainable and just futures. This research contributes to this broad agenda by probing graphic novels as a multispecies storytelling method for design and HCI. Combining ideas from Anna Tsing’s adventures of landscape and from HCI and design’s use of sequential art (e.g., storyboards), we use landscape as the main protagonist of …
Highway-Transportation-Asset Criticality Estimation Leveraging Stakeholder Input Through An Analytical Hierarchy Process (Ahp), Kwadwo Amankwah, Sarah Hernandez, Suman Kumar Mitra
Highway-Transportation-Asset Criticality Estimation Leveraging Stakeholder Input Through An Analytical Hierarchy Process (Ahp), Kwadwo Amankwah, Sarah Hernandez, Suman Kumar Mitra
Civil Engineering Faculty Publications and Presentations
Transportation agencies face increasing challenges in identifying and prioritizing which infrastructure assets are most critical to maintain and protect, particularly amid aging networks, limited budgets, and growing threats from climate change and extreme events. However, existing prioritization approaches often lack consistency and fail to adequately incorporate diverse stakeholder perspectives. This study develops a systematic, stakeholder-informed method for ranking transportation assets based on their criticality to the overall transportation system. As a novel approach, we use the analytical hierarchy process (AHP) and present a case study of the applied approach. Six criteria were identified for ranking assets: annual average daily traffic …
Key Determinants In Electric Vehicle Charging Station Locations, Sania Pirouzi
Key Determinants In Electric Vehicle Charging Station Locations, Sania Pirouzi
Theses (2016-Present)
The growing adoption of electric vehicles (EVs) requires metropolitan areas to strategically plan the placement of charging infrastructure to support accessibility, efficiency, and sustainability. This study investigates key determinants for the optimal siting of EV charging stations, using Houston, Texas, as a case study. Through a comprehensive literature review and expert consultation, eight critical criteria were identified: land use type, population density, median income level of residents in the area, vehicle ownership rate in the area, young and middle-aged residents share in the area, flood risk, traffic density and proximity to major roads, and educational attainment of the residents in …
The Prospect Of Geospatial Analysis In The Prediction Of Surface Quality In Machining, Prithbey Raj Dey, David Lee Enke
The Prospect Of Geospatial Analysis In The Prediction Of Surface Quality In Machining, Prithbey Raj Dey, David Lee Enke
Engineering Management and Systems Engineering Faculty Research & Creative Works
This research underscores the prospect of geospatial analysis in machining operations to enhance precise prediction and robustness, offering a comprehensive framework of spatial modeling for advanced manufacturing processes. Geospatial analysis not only provides accurate predictions but also estimates the uncertainty associated with these predictions, offering valuable insights for process optimization. The surface quality in the machining processes is expressed by the estimation of the average surface roughness. While machining parameters are extensively analyzed for their influence on surface quality, the roughness profile parameters are inadequately explored. This work integrates these underexplored parameters into geospatial predictive models and evaluates their impact …
Designing Between Worlds, Levon Kostandyan
Designing Between Worlds, Levon Kostandyan
Masters Theses
This thesis reimagines design as a means of cultural continuity—an act of memory, resistance, and transformation. Rooted in the diasporic Armenian experience, it explores how identity is carried not only through storytelling, but through materials, rituals, and objects that evolve across time and place. Through the transformation of pomegranate skin from waste into a meaningful design material, the project navigates the space between symbolism and substance, honoring both the fruit’s ancestral weight and its potential as a living material language.
The work moves between personal narrative, historical research, and material experimentation, engaging with themes of displacement, hybridity, and embedded knowledge. …
Emerging Investigator Series: Are We Undervaluing Septage? Rethinking Septage Management For Nutrient Recovery And Environmental Protection, Kevin Orner, Stetson Rowles, Sara F. Heger, Ben Howard
Emerging Investigator Series: Are We Undervaluing Septage? Rethinking Septage Management For Nutrient Recovery And Environmental Protection, Kevin Orner, Stetson Rowles, Sara F. Heger, Ben Howard
Civil Engineering & Construction: Faculty Publications
An estimated 20–25% percent of households in the US rely on on-site sanitation via septic tanks to manage their wastewater. Septage management strategies such as land application, treatment at wastewater treatment plants, and treatment at independent septage treatment plants are common regulated and protective processes for managing septage. There can, however, be potentially negative environmental impacts such as groundwater contamination if septic systems are failing or improperly designed. In this perspective, we reimagine septage management at each step of the septage value chain, identify barriers to change, and propose solutions to overcome these existing barriers. Reimagined septage management can take …
Who Owns The Wind: The Absence Of Community Wind Farms In California, Sky Berry-Weiss
Who Owns The Wind: The Absence Of Community Wind Farms In California, Sky Berry-Weiss
Master's Projects and Capstones
Community ownership structures for wind farms have been around for decades, particularly in European countries, due to high socioeconomic benefits. Given these significant benefits, one might expect community wind to thrive in the United States—especially in a state like California, which prides itself on progressive climate policy and renewable energy leadership. Yet utility-scale community wind remains largely absent from research on California’s energy system, raising questions about its existence in the state. To pinpoint how many utility-scale community owned wind farms are in California, this study surveys every operational wind turbine in the state. After classifying each wind farm by …
An In Depth Examination Of Educational, Family, Economic, And Personal Determinants On Academic Performance, Engagement, And Stress: A Comprehensive Study Among Engineering Students, Oumaima Larif
Theses and Dissertations
This study explores the effects of family, education, economic, and personal factors on students’ decisions to pursue engineering as a profession and their long-term impact on performance as engineering students. We adopted a mixed-method approach, collecting data through surveys administered to undergraduate and graduate engineering students at Mississippi State University. The study results revealed that family, education, economic, and personal factors profoundly influence students' decisions to study engineering. We found that parental expectations, background information, and socioeconomic status, in conjunction with cultural norms, values, gender expectations, and religious beliefs, affect students. Additionally, this study identified gaps in the existing literature …
The Hidden Logic Behind Migration And Success, Elsa Russom
The Hidden Logic Behind Migration And Success, Elsa Russom
Master's Projects and Capstones
This research paper explores the hidden drivers of financial success among Eritrean migrants navigating uncertainty, displacement, and limited institutional access. Drawing on original survey data collected from diaspora communities across East African host countries, I apply a mixed-methods framework combining ordinal and binary logistic regression, random forest classification, bootstrapping, and Bayesian causal mediation; to identify the structural and cultural variables most predictive of financial stability. The findings reveal that participation in Ekub, a traditional rotating savings association, and engagement in communal support systems are the strongest predictors of financial success, outperforming conventional factors such as age, education, or employment status. …
Managing Happiness In The Mexican Maquiladora Industry: A Turnover Management Challenge, Claudia M. Burgos Cruz, Reyna Virginia Barragan Quintero, Angel Contreras Cruz
Managing Happiness In The Mexican Maquiladora Industry: A Turnover Management Challenge, Claudia M. Burgos Cruz, Reyna Virginia Barragan Quintero, Angel Contreras Cruz
Engineering and Technology Management Faculty Publications and Presentations
This study explores a turnover management case by implementing exploratory Human-Centered Design (HCD) strategies, combining a collaborative tool in a Mexican maquiladora in Tecate, Baja California. To reduce turnover, the tool was designed, prototyped, and tested to foster the emotional well-being of employees, enhance employee engagement, and promote a sense of belonging in the workplace. The company leaders and managers were trained to use the HCD prototypes, such as the Happiness Dashboard, a visual feedback system using emojis to collect data during regular shifts, and the Gemba Walks, a method for collecting information through observing and interacting with workers. Organizational …
Civil Engineering Capstone Building Design And Seismic Analysis, Ander P. Mcdade
Civil Engineering Capstone Building Design And Seismic Analysis, Ander P. Mcdade
Honors Theses
The building for the University of Mississippi civil engineering senior design class was designed and analyzed. The building is in Oxford Mississippi. The current address according to the Lafayette Parcel is 825 Sisk Avenue Suite 200. The floor plan, column, and beam design were performed based on engineering judgment and industry standards. The dead, live, snow, rain, and roof live loads were calculated to be 13.3, 50, 20, 27.51, and 20 psf respectively. The building model was created in SAP2000, which was used to generate all loads and load combinations. An analysis was performed to determine the critical loads on …
How Extreme Rainfall And Failing Dams Unleashed The Derna Flood Disaster, Ayman Mokhtar Nemnem, Ahad Hasan Tanim, Audrika Nahian, Sadik Khan, Erfan Goharian, Jasim Imran
How Extreme Rainfall And Failing Dams Unleashed The Derna Flood Disaster, Ayman Mokhtar Nemnem, Ahad Hasan Tanim, Audrika Nahian, Sadik Khan, Erfan Goharian, Jasim Imran
Faculty Publications
On September 11, 2023, Storm Daniel unleashed unprecedented rainfall over the Wadi Derna watershed, triggering one of the most devastating floods in modern history, striking Derna, a coastal city in Libya. This study reconstructs the disaster using an integrated modeling approach that combines satellite imagery, hydrologic, hydraulic, and geotechnical simulations, machine learning, eyewitness accounts, and digital elevation data to assess the impact of cascading dam failures. Our findings reveal that the region’s dams, even if structurally sound, would have provided minimal protection against the extreme runoff. However, their failure unleashed a destructive surge wave, amplifying the disaster’s magnitude and devastation. …
How Extreme Rainfall And Failing Dams Unleashed The Derna Flood Disaster, Ayman Mokhtar Nemnem, Ahad Hasan Tanim, Audrika Nahian, Sadik Khan, Erfan Goharian, Jasim Imran
How Extreme Rainfall And Failing Dams Unleashed The Derna Flood Disaster, Ayman Mokhtar Nemnem, Ahad Hasan Tanim, Audrika Nahian, Sadik Khan, Erfan Goharian, Jasim Imran
Faculty Publications
On September 11, 2023, Storm Daniel unleashed unprecedented rainfall over the Wadi Derna watershed, triggering one of the most devastating floods in modern history, striking Derna, a coastal city in Libya. This study reconstructs the disaster using an integrated modeling approach that combines satellite imagery, hydrologic, hydraulic, and geotechnical simulations, machine learning, eyewitness accounts, and digital elevation data to assess the impact of cascading dam failures. Our findings reveal that the region’s dams, even if structurally sound, would have provided minimal protection against the extreme runoff. However, their failure unleashed a destructive surge wave, amplifying the disaster’s magnitude and devastation. …
Recent U.S. Government Policy Literature On Critical And Strategic Minerals, Bert Chapman
Recent U.S. Government Policy Literature On Critical And Strategic Minerals, Bert Chapman
Libraries Faculty and Staff Scholarship and Research
Critical and strategic minerals have become increasingly important in U.S. government civilian and military policymaking in recent years. This is demonstrated by the heavy use of such minerals in many critical civilian and military infrastructures. This work will discuss how this subject has been addressed in laws, presidential documents, and works by government agencies along with congressional oversight committees and support agencies. It will stress how the United States is heavily dependent on strategic minerals from adversarial foreign countries such as China and will examine U.S. efforts to increase its ability to produce such materials in the United States by …
Calculating The Radius Of The Earth Using Sunset Method: Comparison With Al-BīRūNi Method, Jana Kamal, Tayeb Brahimi
Calculating The Radius Of The Earth Using Sunset Method: Comparison With Al-BīRūNi Method, Jana Kamal, Tayeb Brahimi
Effat Undergraduate Research Journal
This paper attempts to compare the earth's radius calculation based on the sunset or sunrise (moonset or moonrise) with the Method developed by the scientist Al-Bīrūni. The sunset sunrise method is used to calculate the earth radius by standing in front of a flat horizontal plane. In addition, the authors have use Al-Bīrūni's rule to calculate the radius. Furthermore, the error percent of both Al-Bīrūni and the sunset sunrise method were calculated as well. The results showed that the earth actual radius is 6371 km. Eratosthenes radius which is 6366 km is the closest to the actual earth radius, then …
Micro Wind Turbine - Modelling And Testing, Mohammad Uzair Bhati
Micro Wind Turbine - Modelling And Testing, Mohammad Uzair Bhati
All Theses
The global energy demand continues to rise as people consume more electricity to power their personal electronics, electric vehicles, and consumer products such as outdoor tools. To generate renewable energy, large scale solar and wind farms continue to receive the most commercial attention. However, portable wind energy turbines have the potential to generate sufficient power for cell phones and other electronic devices. There are two types of wind turbines, horizontal and vertical axis each having their pros and cons. Vertical-axis wind turbines are the main focus of this thesis, with a reduction in their form factor or size and portable …
Advancing Efficiency Of Unstructured Mesh Processing With Localized Data Structures, Guoxi Liu
Advancing Efficiency Of Unstructured Mesh Processing With Localized Data Structures, Guoxi Liu
All Dissertations
Unstructured meshes are widely used to represent complex shapes and data in visualization tasks, such as medical imaging, engineering design, and geometric modeling. However, their unevenly distributed elements make them memory-intensive and time-consuming to process, especially as mesh sizes grow. This research focuses on improving the efficiency of processing large unstructured meshes by reducing memory usage and speeding up computations. This doctoral dissertation introduces three methods to address these challenges. The first approach divides the mesh into smaller partitions and processes it piece-by-piece, reducing memory requirements by up to 10 times. The second approach uses the processor's parallel computing capabilities …
Engineering Solutions For The Transplant Supply Gap: Social Network Analysis, Artificial Intelligence, And Optimization In Living Kidney Donation., Joshua Nielsen
Electronic Theses and Dissertations
Kidney transplantation is the gold standard for treating end-stage renal disease, yet over 90,000 patients remain on the transplant waitlist. This dissertation introduces engineering-driven solutions to help reduce the transplant supply gap by addressing three challenges: illicit trafficking, donor recruitment, and evaluation inefficiencies. First, we model illicit organ trafficking networks using social network analysis. We demonstrate that targeting transplant clinics alone is insufficient to disrupt operations. Instead, disrupting the network requires detaining brokers who organize behind-the-scenes logistics—offering a more effective strategy for intervention. Second, we seek to identify a latent population of potential living donors who face barriers such as …
A Case Study On Readiness Of Engineers In Agricultural Technology Start-Ups, Katie Marie Mowat
A Case Study On Readiness Of Engineers In Agricultural Technology Start-Ups, Katie Marie Mowat
Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–
This dissertation explores the perceptions of practicing engineers regarding the skills necessary to be workforce-ready at agricultural technology (ag-tech) start-ups in the Midwestern United States. A qualitative case study methodology is leveraged, combining both interview and job description data. Given their uniqueness, the study divides the ag-tech start-up industry into two subcases: livestock and cropping systems. The Work Readiness Integrated Competence Model (WRICM) is used as the theoretical framework for this study and informs the conceptual framework and analysis processes. The study identified skills that fit into thirteen distinct categories, which are further grouped into four overarching resource groups. Skills …
Berm-Leveling Machine For Peach Orchards: Incorporation Of Tree-Sensing Feature And Profitability Study, Shubham Singh
Berm-Leveling Machine For Peach Orchards: Incorporation Of Tree-Sensing Feature And Profitability Study, Shubham Singh
All Theses
Root collar excavation extends the productive life of peach trees in Armillaria root rot-infested soil, but the process requires trees to be planted on berms. Berm-planted peach orchards restrict the mobility of workers and machinery and can lead to increased erosion in furrows on either side of the berms. The current inter-tree berm-leveling machine depends on the driver's command to dodge the peach trees. The objectives of this thesis were to (1) integrate the feeler, infrared, and LiDAR-based tree sensing systems in the berm-leveling machine to make the soil excavating head's movement independent, (2) measure the impact of finger weeder-based …