Digital Commons Network^™

The Floquet Stability Of Two-Bladed Teetering Rotors In Forward Flight, Jose T. Cachero

Mechanical Engineering and Materials Science Independent Study

This report presents a comprehensive analysis of the flap mode stability for a two-bladed teetering rotor using Floquet theory, focusing on the parameter space defined by the advance ratio (μ) and lock number (𝛾𝛾). The study employs numerical integration to compute the monodromy matrix and Floquet multipliers over a grid of μ from 0 to 3.0 and γ from 0 to 20. Key findings include distinct regions of instability where the maximum magnitude of the Floquet multipliers (|ρ|_{\max}) exceeds 1, primarily at higher μ values. Instability boundaries are identified, revealing two primary unstable lobes: one at lower 𝛾𝛾 (approximately 1.0–12.0) …

Optimizing The Bleaching Conditions For Mechanically Extracted And Solvent-Extracted Hempseed Oil, Preston C. Wilson, Md Sanaul Huda, Roque Evangelista, Clairmont L. Clementson, Sean Liu, Bingcan Chen, Ewumbua Monono

APC Fund Awardees

Hemp (Cannabis sativa) seed oil is recognized as a valuable oil due to its beneficial fatty acid profile, which includes a favorable balance of omega-6 and omega-3 fatty acids, making it highly desirable for edible and bioproduct applications. Crude hempseed oil contains high concentrations of chlorophyll, carotenoids, and other amphiphilic compounds that can negatively affect its appearance, stability, and downstream processing. Therefore, bleaching is a crucial step in removing these pigments after the degumming and neutralization processes. To optimize the bleaching process, a Box–Behnken response surface methodology was employed, focusing on three factors: time (15, 30, 45 min), temperature (100, …

Final Butte Mine Waste Repository Geotechnical Investigation Work Plan, Pioneer Technical Services, Inc.

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Excessive Data Collection In An Ecosystem As An Exploitative And Exclusionary Abuse: A Critical Analysis Of The Cci’S Order Against Whatsapp’S Privacy Policy And Its Impact On The Digital Advertising Market, Reuben Philip Abraham Mr.

Yearbook of Antitrust and Regulatory Studies

The interface between privacy and competition law has been a complicated topic in the past decade. The Facebook case by the German competition authority, the Bundeskartellamt (BK) was the first landmark case to investigate an exploitative abuse in this interface. The WhatsApp’s 2021 privacy policy update prompted the Competition Commission of India (CCI) to initiate a suo moto investigation against WhatsApp/Meta regarding the anti-competitive effects of imposing a ‘take-it or leave-it’ agreement on consumers.

In the WhatsApp case, the CCI has pushed the boundaries further in this interface by investigating exclusionary abuses regarding excessive data collection in an ecosystem. This …

“Shaping Academic Teaching At The Crossroads Of Ethics And Artificial Intelligence”, Workshop At Warsaw University Of Technology, Warsaw, 25 September 2024, Julia Braniewska, Bartłomiej Skowron

Yearbook of Antitrust and Regulatory Studies

This document is a report on the workshop, “Shaping Academic Teaching at the Crossroads of Ethics and Artificial Intelligence”, which formed a component of the “Ethics and AI” conference hosted by Warsaw University of Technology.

Confidential, Attestable, And Efficient Inter-Cvm Communication With Arm Cca, Sina Abdollahi, Amir Al Sadi, Marios Kogias, Hamed Haddadi, David Kotz

Other Faculty Materials

Confidential Virtual Machines (CVMs) are increasingly adopted to protect sensitive workloads from privileged adversaries such as the hypervisor. While they provide strong isolation guarantees, existing CVM architectures lack first-class mechanisms for inter-CVM data sharing due to their disjoint memory model, making inter-CVM data exchange a performance bottleneck in compartmentalized or collaborative multi-CVM systems. Under this model, a CVM's accessible memory is either shared with the hypervisor or protected from both the hypervisor and all other CVMs. This design simplifies reasoning about memory ownership; however, it fundamentally precludes plaintext data sharing between CVMs because all inter-CVM communication must pass through hypervisor-accessible …

Undergraduate Stem Student Reflections On The Academic Support Ecosystem At A Rural Minority Serving Institution: The Importance Of Relationship, Stephany Runninghawk Johnson, Jessica L. Black, Karolynn Tom

Northwest Journal of Teacher Education

This paper presents a research project with a group of STEM majoring undergraduates attending a Hispanic Serving Institution participating in the CRESCENT program intended to support undergraduates through their basic math and science courses. The research questions addressed in this paper include: What part of CRESCENT were students utilizing the most and how were they helpful? How did CRESCENT support students through COVID? What can we learn from this data to make future programs more responsive and relevant to STEM majoring students? We found that during COVID students were missing in person contact, had heightened responsibilities and distractions at home, …

Examining The Association Between User Fee Exemptions And Maternal Healthcare Utilization In Northern Ghana, Martina Hilton-Ansah

Walden Dissertations and Doctoral Studies

Abstract In Ghana, the user fee exemption policy, implemented in 2008, provides free maternal health services, which are a key component of the National Health Insurance Scheme (NHIS). Grounded in the Health Access Livelihood Framework, the purpose of this study was to determine the association between the user fee exemption policy and the utilization of antenatal care, facility-based delivery, and postnatal care in Northern Ghana, while controlling for sociodemographic factors. A quantitative approach was employed using secondary data from the Ghana Demographic and Health Surveys, encompassing women of reproductive age (15–49 years; N = 6,948). Logistic regression was used to …

Digital Health Literacy And Health Information-Seeking Behavior Among Black Mothers With Hypertensive Disorders During The Perinatal Period, Robyn Ford Kebede

Walden Dissertations and Doctoral Studies

Abstract The purpose of this qualitative phenomenological study was to explore how Black mothers navigated digital health platforms during the perinatal period while managing hypertensive disorders of pregnancy (HDPs). Guided by the social ecological model and the transactional model of eHealth literacy, the study examined how individual, interpersonal, and structural factors influenced digital health engagement and decision-making. Guiding questions focused on how mothers perceived the credibility and trustworthiness of online health information, how healthcare providers shaped and influenced digital health literacy and information-seeking behaviors, and how community and family support affected digital engagement. Data were collected through semi structured interviews …

Spartan Daily, December 2, 2025, San Jose State University, School Of Journalism And Mass Communications

Spartan Daily, 2025

Volume 165, Issue 40

Talking Sudep: Gaps, Confidence And Training Needs Among Spanish Epilepsy Professionals, Rohit Shankar

Peninsula Medical School

Objective: Sudden Unexpected Death in Epilepsy (SUDEP) is a major cause of epilepsy-related mortality, yetdiscussions about SUDEP in clinical settings remain inconsistent. This study aimed to assess the perspectives,practices, and barriers related to SUDEP counselling for epilepsy professionals in Spain.Methods: A cross-sectional online survey of 17 Likert style questions was disseminated via the Spanish EpilepsySociety between September 2023 and February 2024 to epilepsy professionals in Spain using a nondiscriminatory exponential snowballing technique leading to non-probability sampling. The survey was a validated instrument previously employed in similar international studies. Questions revolved around SUDEPcommunication and counselling. Descriptive and comparative analyses were conducted.Results: …

The George-Anne Inkwell Edition, Georgia Southern University

The Inkwell

No abstract provided.

Public Priorities For The Post-War Reconstruction Of Ukraine’S Energy Sector., Olena Savchenko, Vasyl Zhelykh, Khrystyna Kozak, Omar Al-Hafith, Joao Alencastro, Olugbenga Oladinrin, Ademola Adebayo Akinbami

School of Art, Design and Architecture

The Russian invasion of Ukraine has resulted in the large-scale destruction of many cities across the country. Although the war has not yet ended, there will come a time when the conflict concludes, and reconstruction efforts will begin. Global experiences show that the first step in preparing for post-war reconstruction is to assess the level of destruction. Additionally, it is essential to understand people’s needs and priorities. Otherwise, reconstruction activities may fail to address the existing challenges and actual needs of local communities. This study aims to explore post-war reconstruction priorities of Ukrainians, with special focus on the energy sector …

Line Transect Surveys And Initial Estimates Of Abundance For Sea Turtles In Biscayne National Park, Florida., Kathryn C. Price

All HCAS Student Capstones, Theses, and Dissertations

The loggerhead (Caretta caretta) and green (Chelonia mydas) turtle are two species of marine megafauna that have suffered abundance declines due to increased anthropogenic pressures. Assessing the distribution and abundance of sea turtles is essential for conserving and managing these imperiled species; however, assessing sea turtle populations poses difficulties due to the sea turtles’ highly migratory nature. Distance sampling surveys are extensively used to study populations of wide-ranging species. In this study, vessel-based line transect survey data collected throughout 2024 were used to estimate overall and seasonal sea turtle abundances and distribution throughout Biscayne National Park, …

Readability Analysis Of Aaos And Assh Shoulder And Elbow Patient Education Online Content: A 9-Year Follow-Up Study, Connor Parry, Teresa Veselack, Matthew Doscher, Bryan G. Beutel

Student Publications

Given the progressive spread of medical misinformation, access to understandable educational content from trusted sources has become increasingly more crucial for patients. Online patient education materials, particularly from specialty organizations, have been criticized for being too complex for the average reader. It is advised that this information be at or below the 6^th-grade reading level. This study is a 9-year follow-up to an analysis conducted in 2013 which evaluated the overall readability of educational articles from the American Academy of Orthopaedic Surgeons (AAOS) and American Society for Surgery of the Hand (ASSH) websites related to shoulder and elbow …

Longitudinal Pharmacokinetic And Safety Studies Of An Antibody-Erythropoietin Fusion Protein For Alzheimer's Disease, Rudy Chang, Devaraj Venkatapura Chandrashekar, G. Chuli Roules, Nataraj Jagadeesan, Emi Iwasaki, Adenike Oyegbesan, Hayk Davtyan, Rachita K. Sumbria

Pharmacy Faculty Articles and Research

Erythropoietin (EPO) shows promise for Alzheimer's disease (AD) but has poor brain penetration, necessitating high doses that cause hematopoietic side effects. To improve brain delivery, EPO was fused to a transferrin receptor monoclonal antibody (TfRMAb), and this study evaluated the pharmacokinetics (PK), safety, and efficacy of repeated TfRMAb-EPO dosing in mice to further its preclinical development. C57BL/6J male mice (10 weeks old, n = 4–5/dose) received subcutaneous (SQ) low (1 mg/kg), mid (3 and 6 mg/kg), or high (20 mg/kg) TfRMAb-EPO doses for 4 weeks. The 1 mg/kg dose showed no adverse effects and resulted in sustained brain and plasma …

Fabrication And Evaluation Of Large Alumina Crucibles By Vat Photopolymerization Additive Manufacturing For High-Temperature Actinide Chemistry, R. Joey Griffiths, Christy Santoyo, Jean-Baptise Forien, Bradley Childs, Andrew J. Swift, Andrew Cho, Alexander Wilson-Heid, George Ankrah, Devin Rappleye, Aiden A. Martin, Jason Jeffries, Kiel Holliday

Faculty Publications

Additive manufacturing (AM) offers opportunities to advance the design and function of ceramic tooling in high temperature actinide pyrochemistry. In technical ceramics such as alumina, conventional forming techniques often restrict design flexibility and can limit experimental progress. In this study, we investigate the use of vat photopolymerization (VP) with commercial resins to fabricate large-scale alumina crucibles, reaching dimensions up to 125 mm, which is significantly larger than typically reported for dense VP ceramics. Notably, these additively manufactured components are produced using consumer-grade hardware, which limits process control, but offers significant upside in scalability and accessibility. Using microscopy and X-ray computed …

Evaluating Kansai Airport's Ppp: Grounded Ambitions, Concession Of Financial, Geotechnical, And Climate Risk, Edmund Cho, Dimitrios V. Siskos

International Journal of Aviation, Aeronautics, and Aerospace

This study critically examines the Kansai Airports Group’s 44-year Public-Private Partnership (PPP) monopoly-type concession encompassing Kansai International (KIX), Osaka Itami (ITM), and Kobe (UKB) airports. The research uses financial analysis, Monte Carlo simulation, and NPV-at-risk modeling to evaluate how Japan’s fixed-term private monopoly model allocates financial, operational, and environmental risks. In 2015, there were significant developments in the promotion of the Private Finance Initiative (PFI) Act. It was revised in 2015; as a result, it finds that the underestimated long-term maintenance liabilities, especially Kansai airport (KIX) foundation subsidence, and lacked flexibility to manage exogenous shocks like COVID-19 and Typhoon Jebi. …

A Transition Framework For Hybrid Tls In Enterprise-Level Systems, William Hadd

Cybersecurity Undergraduate Research Showcase

Enterprises face an immediate need to protect long-lived data against harvest-now, decrypt-later threats while maintaining interoperability across layered systems. With NIST’s first post-quantum standards finalized (ML-KEM, ML-DSA, SLH-DSA) and TLS hybridization drafts defining concrete ECDHE + ML-KEM groups, adoption can begin at the TLS termination layer even before full ecosystem support for post-quantum signatures arrives (NIST, 2024; IETF, 2025). In this paper, we propose an enterprise-oriented transition framework and maturity model for hybrid TLS across email, internal API gateways, and object storage. We specify where to enforce, which hybrid groups to select, and how to prevent silent downgrade with policy …

On The Periodic Solution For A Class Of Perturbed A Hyper Jerk Memristive System, Niazy Hady Hussein, Hemin Qassim Rahman

Sultan Qaboos University Journal For Science

Nonlinear dynamical systems with hidden attractors represent a recent and highly active area of research. In this work, the following novel class of four dimensional dynamical memristive vector field is considered []. χ=y∂/∂x+z∂/∂y+w∂/∂z-(z+(1+x)y+a1w+a2z2w)∂/∂w. Such a vector field exhibits a line of equilibrium points Ex(x,0,0,0) passing through the origin. In a specific region within the parameter space, this system displays hyper-jerk dynamics, resembling a dynamical system with concealed attractors. The behavior of the proposed vector field is analyzed by identifying periodic solutions. First, an explicit condition is determined to ensure that the origin, which is a non-isolated singular point has a …

Structural Characterization Of Precambrian Basement Using Magnetic Method In Ago-Iwoye, Southwestern Nigeria, Hamid T. Oladunjoye, Nurudeen K. Olasunkanmi, Omolara A. Adenuga, Sofiat A. Adekoya, Bolarinwa J. Adekoya, Williams T. Ifarajimi

Sultan Qaboos University Journal For Science

Structural characterization was conducted in some parts of Ago-Iwoye to better understand the basement formation for engineering, environmental, and mining studies. The ground magnetic geophysical method was employed to analyze the variations and orientation of the magnetic properties within the basement. Ten (10) magnetic profile lines were established, each approximately 200 m in length. Data were collected using a GEMS GSM 19T proton precession magnetometer and its accessories, measuring the total magnetic field intensity with a precision of about ± 0.1 nT. The residual magnetic intensity was calculated from the total magnetic intensity by deducting the International Geomagnetic Reference Field …

Groundwater Exploration Using Electrical Resistivity Method: A Case Study Of Ga-Gata, Ilorin, Nigeria, A. K. Olawuyi, V. O Oluwole

Sultan Qaboos University Journal For Science

Twenty-five Schlumberger Vertical Electrical Soundings and six Horizontal Resistivity Profiling for groundwater exploration at Ga-Gata along Ajase-ipo road, Ilorin in Kwara State, Nigeria were carried out. The aim was to identify the different subsurface geoelectric layers and the aquifer units. Using the usual method of curve matching with the Orellana-Mooney Master curves and 1-D forward modeling with WinResist 1.0TM software, between three to five lithologic units were identified. These include: the topsoil, the lateritic layer, the weathered layer, the fractured layer and the fresh bedrock. The weathered and fractured basement constitutes the main aquifer unit. The depth to the bedrock …

Mineralogical, Chemical And Physical Properties Of Zeolite Minerals In The Maryah Area, Dhamar, Yemen, Amer M. Al-Sabri, Salah A. Al-Khirbash, Nabil M. Al-Areeq

Sultan Qaboos University Journal For Science

Natural zeolite minerals are a group of hydrated aluminosilicates known for their unique properties, including ion exchange, adsorption, and catalytic capabilities. This paper aims to delineate the mineralogical, chemical, and physical properties of natural zeolite minerals in the Maryah area, Dhamar, Yemen and highlight their significance in various applications such as agriculture, environment, and industry. The petrographic study indicates that the zeolitization processes occurred due to volcanic glass alteration. Based on the XRD pattern, it was found that the zeolite minerals are clinoptilolite and hollandite, which represent most of the mineral content, and they are among the common commercial types …

Enhancing Fiber Reinforced Polymer Composite Performance Through Silane Coupling Agents, Muhammad Umair, Ayesha Shahbaz, Amna Siddique, Khubab Shaker, Zulfiqar Ahmad Rehan

Sultan Qaboos University Journal For Science

The utilization of natural fibers as reinforcement in composite materials is becoming increasingly significant due to their renewable nature and capacity to biodegrade, making them a viable alternative to glass fibers. The present study aims to evaluate and compare the impact of coupling agents made of silane on the characteristics of composites derived from jute and glass fibers. To improve the adhesion between the fiber-matrix interface, a silane coupling agent was applied to the jute and glass woven reinforcements. The present study aimed to explore the effects of varying silane concentrations (1%, 2%, and 3%) on the mechanical properties, specifically …

Production Of Recombinant Β-Galactosidase Protein In Bombyx Mori (Bmn1) Baculovirus Insect Cells, Shuhrat Sh. Khasanov, Jumanazar Ch Mengturayev, Jaloliddin M. Abdurakhmanov, Dilmurodjon B. Turdaliyev, Shakhnoz S. Azimova

CHEMISTRY AND CHEMICAL ENGINEERING

In this study we aimed to obtain a novel recombinant β-galactosidase baculovirus using the Bombyx mori baculovirus – insect cell expression system. A new recombinant plasmid was constructed on the basis of the pBacPAK8 transfer vector and cloned in E. coli cells. Subsequently, a recombinant baculovirus was generated in Bombyx mori cells, and efficient expression of the β-galactosidase gene was observed. The enzymatic activity of the protein was confirmed by the ONPG assay. The results demonstrated that the baculovirus – insect cell system expands the possibilities for producing proteins of industrial significance.

Digital Marketing Strategies To Meet Digital Consumers’ Behavior In The New Era: Challenges, Path, And Interventions To Navigate The Technological And Social Turbulence, Dario Natale Palmucci, Christian Di Prima, Vittoria Magrelli

Economic and Business Review

This paper examines how digital marketing is being reshaped by five interrelated tensions: balancing data privacy and personalization; navigating global–local dynamics (including cultural sensitivities and country-of-origin effects); integrating artificial intelligence without losing human connection; ensuring authentic communication to mitigate reputational risks linked to environmental, social, and governance (ESG) and ethical storytelling; and responding to shifting consumer preferences, particularly among younger generations. We combine a targeted literature review with semistructured interviews of marketing professionals across industries and seniority levels. Findings portray marketers as “tightrope walkers” who negotiate paradoxes that redefine the function. We propose an integrated framework that synthesizes previously fragmented …

Photocatalytic Activity Of The Mixed Of Ti/Fe/Mo Oxide Composites For Degradation Of Nitrofurazone, Dilshoda R. Tursunova, Zuhra Ch. Kadirova, Shahlo Sh. Daminova, Kadriya Kh. Gabidullina

CHEMISTRY AND CHEMICAL ENGINEERING

The aim of study is synthesize mixed oxide composites based on titanium dioxide, iron and molybdenum oxides from industrial waste materials and evaluated for their photocatalytic degradation performance of nitrofurazone—a persistent and toxic antibiotic frequently detected in aquatic environments. Various Ti/Mo ratios (T95M5, T87.5M12.5, T75M25, and T50M50) were prepared through thermal treatment at 600 °C and characterized using XRD, UV–Vis and Raman spectroscopy to assess structural and optical properties.XRD and Raman analyses confirmed the presence of anatase-phase TiO₂ and Mo/Fe oxides, with optimal crystallinity and heterojunction formation observed in the T87.5M12.5 composite. UV–Vis spectroscopic studies demonstrated that this composite exhibited …

Are Loyalty Programmes Still “A Thing” In High-Fashion Retail? Understanding Generation Z’S Perspective, Živa Kolbl, Lori Šušulić

Economic and Business Review

This study investigates the relevance and perception of loyalty programmes (LPs) among Generation Z (Gen Z) consumers in the high-fashion retail sector. While LPs are well-established tools for fostering customer retention, their effectiveness among Gen Z, a cohort characterized by digital fluency, a preference for authenticity, and distinct consumption values, remains underexplored. Given the high-fashion context, where exclusivity and identity are critical, this study examines the extent to which LPs resonate with this generation. Utilizing a qualitative methodology and with the help of thematic analysis, we reveal four key dimensions: drivers of high-fashion consumption, shopping preferences, customer loyalty patterns, and …

Gas Chromatographic Analysis Of Fractions Separated By Atmospheric Distillation Of Pyrolysis Distillate, Gulnora K. Komolova, Lola A. Yusupova

CHEMISTRY AND CHEMICAL ENGINEERING

The primary objective of this study is to optimize the process of isolating the C9 hydrocarbon fraction from pyrolysis distillate and to evaluate the impact of various temperature regimes on the product composition. To achieve this goal, the dry distillation process was conducted at three different temperatures: 152 °C, 159 °C, and 170 °C. Condensate samples obtained from each test were analyzed using gas chromatography (GC). The analysis results revealed that the fraction obtained at 152 °C yielded the most favorable outcome: the C9 fraction yield was 11.11%, which is higher than the values obtained at 159 °C (4.59%) and …

Lightweight Thermal Insulation Brick Based On Jerdanak Clay Shale, Obtained With The Addition Of Sawdust, Mastura Kh. Aripova, Sarvar T. Bozorov

CHEMISTRY AND CHEMICAL ENGINEERING

The aim of this study was to produce lightweight thermal insulation bricks based on Djerdanak clay shale with the addition of wood sawdust. The starting materials were clay shale from the Djerdanak deposit, fireclay made from it, and wood chips—a waste product from the wood processing industry. The optimal brick composition was determined to include 60% clay shale, 40% fireclay made from clay shale, and 14% wood chips (over 100%). The apparent density of the optimal brick composition corresponds to an apparent product density of 1 g/cm³ and a compressive strength of 3.6 N/mm². The microstructure of the material demonstrates …