Digital Commons Network^™

Integration Of Mechanism-Driven Computational Modeling And Public Data Resources For Chemical Toxicity Assessment, Elena Chung

Theses and Dissertations

Regulatory toxicology depends primarily on animal testing, which limits throughput, mechanistic interpretability, and applicability to human-relevant endpoints. This dissertation presents computational approaches that integrate publicly available bioactivity data with machine learning to support chemical safety evaluation. Oral carcinogenicity was modeled using curated chemicals from the US Environmental Protection Agency’s Integrated Risk Information System (IRIS) and activity data from over 1,900 PubChem assays. Quantitative structure-activity relationship (QSAR) models trained on statistically prioritized assays demonstrated strong predictive performance and were applied to rank the carcinogenic potential of more than 16,000 compounds. Hepatotoxicity was evaluated using a hybrid modeling approach that combined structural …

Cv: Hyeseong Lee (Elementary Education/Special Education), Hyeseong Lee

Education Department Faculty Curricula Vitae

No abstract provided.

Advancements In Refreshable Braille Display Technology: A Comprehensive Survey, Maryam Etezad, Rajeev Joshi, Franceli L. Cibrian

Engineering Faculty Articles and Research

This paper provides a comprehensive mapping literature review of the advancements in refreshable Braille display (RBD) technology, which employs dynamically movable pins or dots to render Braille characters for individuals with blindness and visual impairment. This literature review, which includes 96 papers, aims to summarize the current evidence on six distinct types of RBDs: piezoelectric, electromagnetic, electroactive polymer (EAP), pneumatic, shape memory alloy (SMA), and microfluidic technologies. For each type, we discuss the underlying mechanisms, alongside the current trends and research opportunities. This comparative analysis aims to inform the selection of appropriate RBD technology based on specific user needs and …

The Royal Academy Of Engineering, Uk And The Enriching Of Engineering Education Training And Practice Programme In Sub-Saharan Africa, Bavo B. Nyichomba

Tanzania Journal of Engineering and Technology (TJET)

This paper elucidates initiatives taken by the Royal Academy of Engineering, UK, to overcome barriers in education and training in Sub-Sahara African higher learning engineering institutions. The said barriers include mismatches of curriculum, ineffectual teaching and learning and little exposure of academic staff to engineering practice. In order to overcome such barriers, the Royal Academy of Engineering established the two programmes in the region. The first one, Enriching Engineering Education Programme (EEEP) from 2014/15 to 2015/16 where the University of Dar es Salaam coordinated this programme as a hub for East African universities namely; Makerere University (Uganda), Moi University (Kenya), …

Performance Dynamics Of Activated Carbon-Methanol Pair In Adsorption Refrigeration Systems, Ibrahim J. Mwasubila

Tanzania Journal of Engineering and Technology (TJET)

Adsorption refrigeration systems have shown potential for addressing the adverse effects of traditional compressor-based refrigeration systems. Adsorption refrigeration systems that utilise activated carbon and methanol demonstrate good performance, especially at temperatures below 0 °C. This combination significantly improves the cooling performance of the system, making it a dependable option for freezing applications. Despite having the potential to meet cooling demand and be eco-friendly, the adsorption refrigeration system has several drawbacks that hinder its commercialisation. This paper discusses the properties of the activated carbon methanol pair in the adsorption refrigeration system. The focus is on the desorption temperature, thermal stress, repeatability …

Flash Flood Modelling In The Brantas Hulu Sub-Watershed, Batu City, Indonesia, Listyo Yudha Irawan, Vischawafiq Azizah, Siti Nur Farihah, Luisa Fernanda Medina, Puspita Indra Wardhani, Nanda Regita Cahyaning Putri, Mellinia Regina Heni Prastiwi, Mohammad Rendra Magandhi Arizal

Jurnal Pendidikan Geografi: Kajian, Teori, dan Praktek dalam Bidang Pendidikan dan Ilmu Geografi

Flash floods are especially hazardous hydrological phenomena, noted for their abrupt occurrence and capacity to inflict severe damage on infrastructure, farmlands, and residential zones, often leading to substantial socio-economic upheaval and fatalities. A flash flood struck the Upper Brantas watershed on November 4, 2021, at 14:00, precipitated by intense rainfall over a short duration, leading to significant hydrological impacts. The event manifested at six critical points within Batu City, with Sambong Hamlet and Beru Hamlet experiencing severe inundation. The flash floods disrupted residential areas and severely affected agricultural lands through debris flows. Preliminary assessments indicated that approximately 35 houses were …

Assessment Of Digital Solutions For Conformity Assessment Of Legally Controlled Measuring Instruments In Tanzania, Faraja Nyoni

Tanzania Journal of Engineering and Technology (TJET)

The advent of state-of-the-art digital technologies since 2011 has led to the digital transformation of legal metrology practices to ensure the trustworthiness of software-controlled measuring instruments globally. Despite the digital transformation in legal metrological practices, the conformity assessment of legally controlled measuring instruments is manually done (i.e., paper-based) in Tanzania. The paper-based conformity assessment of legally controlled measuring instruments is prone to error and lacks efficiency and effectiveness. This study aimed to assess digital solutions for improving conformity assessment through a comprehensive survey conducted across various regions in Tanzania, targeting a stratified sample of 51 respondents from organizations involved in …

Idling Vehicles: Practices And Perceptions Among Malaysian Drivers, Paul Ting Hock King, Shaharin Anwar Sulaiman

Platform: A Journal of Engineering (PAJE)

Although modern cars may not require long warming up, the practice of long engine idling has long been accepted by drivers as vital for various reasons, usually by old traditions. The practice, which can shorten the life of engines, in addition to wasting fuel and causing harm to the environment, is commonly found in Malaysia. However, no statistics are available on this detrimental practice, rendering it challenging to determine the essential corrective measures for society. This study aimed to examine the habits of Malaysian drivers concerning car warming-up and idling practices, with the goal of identifying potential strategies to promote …

Regularity, Uniqueness And The Relative Size Of Small And Large Scales In Sqg Flows, Z. Akridge, Z. Bradshaw

Mathematical Sciences Faculty Publications and Presentations

The problems of regularity and uniqueness are open for the supercritically dissipative surface quasi-geostrophic equations in certain classes. In this note we examine the extent to which small or large scales are necessarily active both for the temperature in a hypothetical blow-up scenario and for the error in hypothetical non-uniqueness scenarios, the latter understood within the class of Marchand's solutions. This extends prior work for the 3D Navier-Stokes equations. The extension is complicated by the fact that mild solution techniques are unavailable for supercritical SQG. This forces us to develop a new approach using energy methods and Littlewood-Paley theory.

Characterization And Drug Release Evaluation Of Chlorhexidine-Encapsulated Silica Nanoparticles For Potential Root Canal Disinfection, Widya Rakhmawati, Andrie Harmaji, Fanni Kusuma Djati, Bambang Sunendar

Makara Journal of Science

The failure of root canal treatments is often attributed to bacterial invasion of the dentinal tubules, where pathogens can persist and complicate healing. Chlorhexidine digluconate, a potent antimicrobial agent, has been widely utilized for its broad-spectrum antibacterial effects. However, challenges remain in achieving efficient distribution and sustained release within the root canal system. This study investigates the encapsulation of chlorhexidine digluconate within silica nanoparticles as a novel drug delivery system that is aimed at improving root canal treatment outcomes. Silica nanoparticles were synthesized using the sol-gel method and subsequently immersed in a 2% chlorhexidine digluconate solution for 15 to 30 …

Modeling Of Carbonization And Absorption Processes In Soda Ash Production, Nadirbek Rustambekovich Yusupbekov, Djalolitdin Paxritdinovich Mukhitdinov, Fatima Faxritdinovna Iskhakova

Chemical Technology, Control and Management

The article considers the problem of modeling the ammonia-soda process of soda ash production and presents the chemistry of sodium bicarbonate (NaHCO₃) formation. The equation of the kinetics of the reaction, used as a model of the carbonation process, is derived from a system of equations and its computer model is compiled. The system of differential equations reflecting the kinetics of the process was solved in the Mathcad package. The result of the modeling is presented. Based on the experimental data, the dependence of the absorption column performance on temperature and the dependence reflecting the optimal value of the absorption …

Algorithms For Making Control Systems Based On Neural Network Technology To Automate Dynamic Plants, Jasur Sevinov, Abdishukurov Maqsudovich Shavkat

Chemical Technology, Control and Management

This paper examines the stages of multilayer neural network technology for the control and identification of dynamic systems. It is seen many ways to use multilayer neural networks in control systems. Neural controllers are based on several models and algorithms. Examples of such algorithms include the predictive model-based control algorithm, the Narma-L2 control algorithm, and the benchmark model-based control algorithm. These controllers illustrate various general ways to use multilayer neural networks in control systems. Common, standard linear control architectures have been proposed for many neural controllers.

The Impact Of Cost Leadership On Financial Distress Mediated Environmental, Social, And Governance, Steven Asher, Meythi Meythi, Riki Martusa, Rapina Rapina

Jurnal Akuntansi dan Keuangan Indonesia

Background: This study investigates the mediating role of environmental, social, and governance (ESG) performance in the relationship between cost leadership and financial distress among companies in Indonesia. Methods: Using path analysis, the research analyzed a sample of 43 firms listed on the Indonesia Stock Exchange from 2018 to 2022. Findings: The findings indicate that cost leadership positively affected ESG; however, no direct relationship was observed between cost leadership or ESG and financial distress. The mediation analysis reveals that ESG acted as a mediator, linking cost leadership to a reduced risk of financial distress. Conclusion: These results highlight the importance of …

Final Insufficiently Reclaimed Sites Quality Assurance Project Plan (Qapp), Pioneer Technical Services, Inc.

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Draft Final Quarterly Operations And Maintenance Report Butte Treatment Lagoon System – First Quarter 2025, Pioneer Technical Services, Inc.

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Production And Characterization Of Biodiesel From Malapari Seed Oil (Pongamia Pinnata L.): Evaluation Of Quality Parameters Based On The Indonesian National Standard (Sni) 04-7182-2015, Desi Adriyanti Nina Taebenu, Ni Luh Arpiwi, Ida Ayu Astarini

Makara Journal of Science

This study produced biodiesel from Malapari seed oil (Pongamia pinnata L.) by optimizing the esterification and transesterification processes. The objectives of this study were to determine the sulfuric acid (H₂SO₄) catalyst concentration in the esterification reaction that can reduc the free fatty acid (FFA) content of the seed oil to ≤2%, analyze the oil to methanol molar ratio (i.e.,1:6, 1:9, and 1:12) and KOH concentration (i.e.,2%, 4%, and 6%) that will produce the highest biodiesel yield, and evaluate the quality of the produced biodiesel according to the Indonesian National Standar (SNI) 04-7182-2015. The research was …

How Invasive Species Affect Ecosystems, Marion Murray, Meg Kast

All Current Publications

Invasive species can have profound impacts on ecosystems worldwide. In the absence of their natural enemies, invasive species thrive and reproduce quickly. They can have significant ecological and economic effects. This fact sheet outlines the impact of invasive species on biodiversity, nutrient cycles, water quality, and the resulting economic consequences. It also suggests practical tips for responding.

Two New Majors Among Program Updates For 2025-26, Julia Perez

Press Releases 2020-2029

No abstract provided.

Advancements In Mooring Systems For The Oe35 Wave Energy Converter: Dynamic Design And Validation, Chenyu Zhao, Faryal Khalid, Tony Lewis, Sean Barrett, Brian Mcswiney, Rémy Cr. Pascal, Bernardo Kahn, Lars Johanning

School of Engineering, Computing and Mathematics

This research presents a comprehensive analysis of the mooring system design for the 1 MW OE35 wave energy converter, which is being developed by the WEDUSEA project. The study centres on the dynamic analysis of mooring configurations using Orcaflex software to simulate the environmental and operational conditions expected at the deployment site. The analysis involved an iterative design and validation process, refined through both numerical modelling and basin testing. These tank tests were crucial for validating the Orcaflex model outcomes by providing a controlled environment to observe the physical behaviours of the proposed mooring configurations under simulated sea conditions. The …

Source Origins Of Hunter-Harvested Waterfowl In Arkansas And Louisiana, Shannon C. Stemaly

LSU Master's Theses

Understanding variability in breeding origins of harvested waterfowl is important for effective population management and regional conservation. Band-recovery data are often used to estimate harvest derivation and inform resource allocation for cross-seasonal conservation. However, uneven spatial and temporal banding effort across species' breeding ranges may result in an incomplete understanding of summer origins and recruitment, particularly if portions of the breeding range are inaccessible. Analysis of stable-hydrogen isotope ratios in duck feathers (δ²H_f) provides an alternative method for identifying source origins of unmarked populations since environmental deuterium values follow a predictable latitudinal gradient across North …

Robust Contraction Decomposition For Minor-Free Graphs And Its Applications, Bandyapadhyay Sayan, William Lochet, Daniel Lokshtanov, Dániel Marx, Pranabendu Misra, Multiple Additional Authors

Computer Science Faculty Publications and Presentations

We prove a robust contraction decomposition theorem for H-minor-free graphs, which states that given an H-minor-free graph G and an integer p, one can partition in polynomial time the vertices of G into p sets Z₁,… ,Z_p such that tw(G/(Z_i ⧵ Z')) = O(p + |Z'|) for all i ∈ [p] and Z' ⊆ Z_i. Here, tw(⋅) denotes the treewidth of a graph and G/(Z_i ⧵ Z') denotes the graph obtained from G by contracting all edges with both endpoints in Z_i ⧵ Z'. Our result generalizes earlier results by Klein [SICOMP 2008] and Demaine et al. [STOC 2011] based …

Dynamic Model Of Stunting Incidents And Policies In Padang City, Elsa Yuniarti, Yulhendri Yulhendri, Fitra Arya Dwi Nugraha, Nurhasan Syah, Iswandi Umar, Heldi Heldi, Nabila Azzahra

Media Kesehatan Masyarakat Indonesia

Stunting remains a significant public health challenge with complex, interconnected causative factors. Traditional static approaches fail to capture the dynamic relationships between environmental, health, and socioeconomic determinants. Dynamic modeling is essential for understanding these multifaceted interactions and developing effective prevention policies. Despite declining trends, Padang City's high prevalance of stunting necessitates urgent, targeted interventions to achieve national targets. This study aims to develop a dynamic model analyzing stunting factors in Padang City and formulate effective prevention policies. A quantitative descriptive method with a dynamic systems approach was employed. Primary data were obtained through stakeholder questionnaires, while secondary data were obtained …

Mapping Trends And Patterns In Tuberculosis And Tobacco Use: Insights From A Bibliometric Analysis Of 25 Years Of Research, Meyi Yanti, Erwani Erwani, Radian Ilmaskal, Masrizal Masrizal, Sohel Rana

Media Kesehatan Masyarakat Indonesia

Tuberculosis (TB) and tobacco use represent two of the most pervasive global health challenges, with a particularly profound impact in Low and Middle-Income Countries (LMICs). Although numerous reviews have explored the clinical and epidemiological associations between TB and smoking. A systematic analysis of publication trends is lacking. This study aims to address this gap by providing a comprehensive bibliometric analysis of the intersection between TB and tobacco use, mapping its evolution, key research themes, collaboration networks, and underexplored areas. This study utilized a bibliometric method. Data from 13,876 articles indexed in Scopus were analyzed using RStudio, VOSViewer, and OpenRefine. PLOS …

Experiences Of Ba Sociology Students From A Philippine State University: Recruitment, Retention, And Future Aspirations, Mark Anthony M. Quintos, Minami O. Iwayama

Social Sciences and Development Review

Sociology as an undergraduate program in the Philippines has expanded significantly. A total of 49 higher educational institutions offer an undergraduate degree in Sociology; 20 of which are in Luzon and 8 are in Metro Manila. Despite this growth, Sociology departments face challenges in recruiting and retaining students amidst a competitive academic landscape. This study was conducted with students from a Philippine state university, exploring their motivations for enrolling, reasons for staying, perceived strengths and weaknesses of the program, and their post-graduation plans. The insights gained from this research could guide future improvements to Sociology programs to better meet the …

Aligning Models Of Competency-Based Education With Skills For The Future, Teresa M. Ober, Lei Liu, David Nitkin, Ou Lydia Liu

Chinese/English Journal of Educational Measurement and Evaluation | 教育测量与评估双语期刊

Essential competencies such as collaboration and critical thinking, integral to long-term success, have been notably absent from traditional curricula, as the current instructional materials largely focus on disciplinary domains. Previous research, as highlighted by Liu, Kell, Ling et al. (2023), established a compelling link between these competencies and success across educational, occupational, civic, and health and wellbeing outcomes. The Skills for the Future, a joint initiative by ETS and Carnegie Foundation, presents a comprehensive approach to transform skills identification, demonstration, and verification. The initiative aims to create an ecosystem for skills consisting of a skills framework, assessment, extraction, and insight, …

The Dynamics Of Word-Of-Mouth Marketing: An Agent-Based Modeling Approach To Message Credibility And Consumer Engagement, Ali Nasirzonouzi, Carlos Gershenson

Northeast Journal of Complex Systems (NEJCS)

Word-of-mouth (WOM) marketing is a critical factor in the dissemination of information and adoption of products in social networks. This paper investigates the impact of two important factors message credibility and consumer engagement on WOM adoption dynamics using agent-based modeling (ABM). This study proposes a simple qualitative model to investigate how these factors influence adoption rates through both broadcast communication and peer-to-peer influence by simulating interactions on a spatially clustered network.

The findings show that increased message credibility significantly boosts adoption, achieving a balance between broadcast and social mechanisms. Also, consumer engagement primarily affects the adoption mechanism, shifting the effect …

A Demand Systems Analysis Of Energy Sources In The United States, Rafael Bakhtavoryan

Faculty Publications

This study estimates a Generalized Exact Affine Stone Index model to quantify demand structure among such energy sources as natural gas, coal, nuclear, wind, solar, and geothermal energy, employing monthly time-series data ranging from January of 2009 through December of 2020. The demand for natural gas, coal, and nuclear energy emerges as inelastic. A significant substitutability relationship is empirically established between the energy sources. All the computed expenditure elasticities are positive, with natural gas being the most sensitive and nuclear energy being the least sensitive to energy source expenditures. Pre-committed consumption is found for geothermal energy. Finally, the welfare implications …

Carbon Efficiency Of Natural Organic Honey-Memristor Based Neuromorphic Computing, Harshvardhan Uppaluru, Zoe Templin, Shah Zayed Riam, Feng Zhao, Jinhui Wang

Electrical and Computer Engineering Faculty Research & Creative Works

Natural organic memristors manufactured using honey have exhibited promising synaptic behavior, offering notable advantages such as environmental sustainability, low production and disposal costs, non-volatile storage capabilities, and bio/CMOS compatibility. In this paper, experimental evaluations of honey-memristor based neuromorphic systems are reported with a focus on estimating their carbon footprint. First, manufacturing and testing of honey-memristors is briefly described. To suppress variations and improve accuracy, an optimization technique - parallel memristors is applied. Experimental results indicate that this optimization method significantly improves the device performance of up to. However, it also leads to higher energy consumption and a higher carbon footprint …

Vitamin D3 Toxicity-Induced Hypercalcemia In Staphylococcal Arthritis: A Focus On Il-6, Ali Jabbar Abd Al-Hussain Alkawaz, Maryam Sabah Naser, Ali Jalil Obaid, Zakaria M. Al-Ghazaly

Karbala International Journal of Modern Science

Background: Vitamin D3  over-supplementation can induce toxicity through the development of hypercalcemia and may disturb immune modulation. This study examines the relationship between hypercalcemia  resulting from Vitamin D3 Overdose and serum Interleukin-6 (IL-6) levels in patients diagnosed with staphylococcal arthritis.

Methods: Forty male patients (mean age: 31 years; range: 17–45 years) were enrolled from Dec. 2024 to Feb. 2025. Twenty cases of staphylococcal arthritis were compared with twenty healthy male controls. Serum concentrations of Vitamin D3, calcium, IL-6, and other biochemical markers (urea, creatinine, ESR, WBC, and potassium) were analyzed. Staphylococcus aureus was isolated from synovial fluid and confirmed using …

Vacuum Consistent Electrochemistry In Ionic Liquid Combined With Oxide Epitaxy, Yuji Matsumoto

Journal of Electrochemistry

We introduce our state-of-the art of “vacuum consistent electrochemistry” to an investigation of the interfaces between oxides and ionic liquid (IL). Pulsed laser deposition (PLD) has been one of the powerful and sophisticated techniques to realize nanoscale preparation of high-quality epitaxial oxide thin films. On the other hand, electrochemistry is a simple, very sensitive, and non-destructive analysis technique for solid-liquid interfaces. To ensure the reproducibility in experiment of the interfaces of such epitaxial oxide films, as well as bulk oxide single-crystals, with IL, we employ a home-built PLD-electrochemical (EC) system with IL as an electrolyte. The system allows one to …