Digital Commons Network^™

Essays In Machine Learning, Econometrics, And Computational Economics, Lulu Wang

Dissertations, Theses, and Capstone Projects

Chapter 1 Data-Driven Graph Neural Networks And Realized Volatility Prediction through Graph Discovery: Financial markets’ interconnectedness plays a crucial role in financial predictions. However, existing network structures often fall short in aligning with specific prediction tasks. This paper presents a novel model that integrates graph discovery techniques with Graph Neural Networks (GNNs) to address this challenge, focusing on short-term intraday realized volatility prediction. Our investigation from a graph theory perspective reveals that precision-based graph discovery methods substantially enhance GNNs accuracy by generating meaningful graphs and node embeddings. In contrast, conventional covariance-based approaches exhibit limited effectiveness due to their consideration of …

Pulsey: Stellar Pulsation Models In Python, Andrew Ayala

Dissertations, Theses, and Capstone Projects

The era of the Kepler/K2 and TESS space-telescope missions has inundated the astrophysics community with photometric data for millions of stars with continuous observation and very high cadence. This data confirms that nearly every observed stellar source exhibits an oscillating luminosity, with stellar pulsation being the driving mechanism behind a large fraction of the cause. The result has been an explosion in the field of asteroseismology, where the recorded luminosity variations, or "light curves", of pulsating stars to probe their interior structures. By modeling observed light curves, we can constrain values of the physical stellar parameters producing them. The brightness …

Synthesis Of C-Di- And C-Tri- Saccharides From Glycosyl Crotylating Agents, Steven Truong

Dissertations, Theses, and Capstone Projects

The involvement of carbohydrates in a plethora of fundamental biological pathways, including disease related processes, has created a demand for molecular probes for elucidating these mechanisms. Accordingly, synthesis of tailored and diverse carbohydrate-like molecules, commonly referred to as glycomimetics, is a very active area of research. Among the more popular classes of glycomimetics are C-glycosides, analogues in which the anomeric carbon of a parent sugar is attached to a carbon substituent. C-glycosides have attracted attention in the medicinal chemistry community as there are several naturally occurring examples with interesting pharmacologically activity. C-glycosides are also of interest because in …

Data Management Report September 2024, Tennessee. Department Of Disability And Aging

Compliance & System Data/Reports

This monthly report provides data on various aspects of the department's activities and programs.

The Recruitment And Retention Of Professional Volunteers To Mentor Dental Students, Sandra Gibson

Electronic Theses and Dissertations

The recruitment and retention of volunteers in society is a critical endeavor for many nonprofit organizations that look to serve our communities. For many organizations, it is a way to keep costs down and to supplement the physical resources necessary to keep the organization afloat. This study centered on recruiting and retaining professional dental volunteers to mentor dental students at the Social Wellness Services (SWS: pseudonym) organization in Upstate, NY. The general problem addressed in this study was that many nonprofits need help acquiring highly specialized volunteers, which requires a unique amalgamation of education, skill/experience, selfless attitude, resolve, and available …

The 10 Commandments Of Endo-Bentall Repair, Mehrdad Ghoreishi

All Publications

No abstract available

Remote Court Hearings (Past, Present, And Future): Arizona’S Next Steps For A New World To Enhance Access To Justice, Samuel A. Thumma, Marcus W. Reinkensmeyer

SMU Law Review Forum

In this article, the Arizona Supreme Court COVID-19 Continuity of Court Operations During a Public Health Emergency Workgroup (“Plan B Workgroup”) provides an update from its prior efforts, building on the Post-pandemic Recommendations: COVID-19 Continuity of Court Operations During a Public Health Emergency Workgroup, 75 SMU LAW REVIEW FORUM 1 (2022). This article focuses on the Plan B Workgroup’s February 2022 Recommended Remote and In-Person Hearings in the Arizona State Courts in the Post-Pandemic World and developments after those Recommendations. The article highlights the consideration and adoption of the Recommendations by the Arizona Judicial Council and the Arizona Supreme Court, …

Pathways To Learning In Data-Based Policy Innovation Labs, Sojeong Kim, Tanya Heikkila, Adam Wellstead

Michigan Tech Publications

In recent years, policy innovation labs (PILs) have emerged to develop greater capacity for addressing pressing public policy problems and achieving policy objectives. An implicit assumption is that PILs can bring new data and evidence to support policy learning. Policy learning enables individuals, organizations, and systems to advance their capacity to achieve policy objectives and produce desirable policy outcomes. We investigate the role of policy learning in “data-based” PILs, which address the growing interest in big data and advanced technologies to address public policy issues. With a focus on applying new information and data systems technologies to assess public policy …

Transvenous Tissue Sampling In The Diagnosis Of Intravascular Neoplasm., Christopher J Neely, Christopher M Huff, Andrew C Gordon, Raghu Kolluri, Kush R Desai

Heart and Vascular Articles

No abstract provided.

Angle Accuracy Of Intramedullary Bone Resection Guides For Total Knee Arthroplasty., Matthew C Kane, Harold E Cates, Iou-Ren Chang

Surgery Articles

The importance of proper prosthetic placement has been confirmed in numerous studies. The objective of this study was to compare the planned resection angles to the verified intraoperative angles of femoral and tibial varus/valgus, tibial slope, and femoral flexion for each total knee performed using intramedullary (IM) cut guides for both distal femur and proximal tibia cuts. A total of 1,000 total knee arthroplasties (TKAs) were evaluated for this study. Intraoperative cut-check technology was used to show real-time validation of these resection angles. Assuming an acceptable range of within 2° of the planned cuts, results show the femoral varus/valgus angles …

Predictors Of Outcome And Symptomatic Intracranial Hemorrhage In Acute Basilar Artery Occlusions: Analysis Of The Pc-Search Thrombectomy Registry., Adam T Mierzwa, Ashley Nelson, Sami Al Kasab, Santiago Ortega Gutierrez, Juan Vivanco-Suarez, Mudassir Farooqui, Ashutosh P Jadhav, Shashvat Desai, Gabor Toth, Anas Alrohimi, Thanh N Nguyen, Piers Klein, Mohamad Abdalkader, Hisham Salahuddin, Aditya Pandey, Zachary Wilseck, Sravanthi Koduri, Niraj Vora, Nameer Aladamat, Khaled Gharaibeh, Ehad Afreen, Hisham Al-Hajala, Julie Shawver, Syed Zaidi, Mouhammad Jumaa

Neuroscience Articles

INTRODUCTION: Recent randomized controlled trials demonstrated superiority of mechanical thrombectomy compared to medical therapy in acute basilar artery occlusions, however, little data is available to guide clinicians in functional prognosis and risk stratification.

PATIENTS AND METHODS: Data from the retrospectively established PC-SEARCH Thrombectomy registry, which included patients with basilar artery occlusion from eight sites from January 2015 to December 2021, was interrogated. Outcomes were dichotomized into 90-day favorable (mRS ⩽ 3) and unfavorable (mRS > 3). Multivariate logistic regression analysis was performed with respect to the outcome groups and were adjusted for potential confounding baseline characteristics.

RESULTS: Four-hundred-forty-four patients were included …

Digital Commons Statistics For September 2024, Liberty University

Digital Commons Statistics

No abstract provided.

Voices Raised, Fall 2024, University Of Dayton. Women's Center

Women’s Center Newsletter

Newsletter editor: Gabby Campana

In this issue:

• Inspiring Change with Dr. Satang Nabaneh, by Ajá McMichel
• An Interview with Gabby Campana, by Nikita Khasgiwale
• Book Spotlight: Men Who Hate Women
• From the Director’s Desk, by Leah L. Ward, Ph.D.

Cost Optimization And Reliability Analysis Of Fault Tolerant System With Service Interruption And Reboot, Madhu Jain, Pankaj Kumar, Mayank Singh, Ritu Gupta

Open Access archive

Due to widespread usage in many real time systems, reliability modeling and cost optimization of fault tolerance system have drawn attention of the practitioners. The fault tolerance in these systems can be provided by the support of maintenance and redundant components that help in smooth operation of the system in spite of failure of some active components. This investigation deals with the performance modeling of a fault-tolerant system consisting of a finite number of active (online) and standby components. During the switching from active to standby, the recovery procedure is performed, which may be imperfect. In case of imperfect recovery, …

Unconventional Localization Of Pai-1 In Pml Bodies: A Possible Link With Cellular Growth Of Endothelial Cells, Pragya Gehlot, Daniela Brünnert, Vibha Kaushik, Arpana Yadav

Open Access archive

Plasminogen activator inhibitor-1 (PAI-1/Serpin E1) is classically known for its antifibrinolytic activity via inhibiting uPA and tPA of the fibrinolytic pathway. PAI-1 has a paradoxical role in tumor progression, and its molecular functions are poorly understood. PAI-1 is a widely accepted secretory protease inhibitor, however, a study suggested the localization of PAI-1 in the cytoplasm and the nucleus. Besides the plethora of its biological functions as a secretory protein, intracellular localization, and functions of PAI-1 remain unexplored at the molecular level. In this study, using various in silico approaches, we showed that PAI-1 possesses a nuclear export signal. Using the …

On-Grid Optimal Mppt For Fine-Tuned Inverter Based Pv System Using Golf Optimizer Considering Partial Shading Effect, Mohammed Hassan El-Banna, Muhammad R. Hammad, Ashraf Ibrahim Megahed, Kareem M. Aboras

Open Access archive

Improving photovoltaic systems to better withstand variations in temperature and irradiance, lessen steady-state ripples, maintain high efficiency, require less tracking time, and have minimal complexity is becoming increasingly important. The PV array's overall power output is negatively impacted by partial shading because the shaded cells produce less power and consume less power overall, which lowers efficiency and creates localized hotspots. Although bypass diodes may be used to counteract these impacts by rerouting current around cells that are shaded, they can result in several peaks, which complicates maximum power point tracking (MPPT). To manage several peaks and optimize power output, metaheuristic …

An Experimental Study On Material Removal Rate And Surface Roughness Of Cu-Al-Mn Ternary Shape Memory Alloys Using Cnc End Milling, N. Praveen, N. G. Siddesh Kumar, C. Durga Prasad, Manoj Kumar

Open Access archive

This study investigates the impact of Computer Numerical Control (CNC) milling parameters on Cu-Al-Mn SMAs (Shape memory alloys) to evaluate the effects on Surface Roughness (SR) and Material Removal Rate (MRR). The primary variables examined comprise of cutting speed, feed rate, and depth of cut. Results indicate that the Shape Memory Effect (SME) is higher in Copper Aluminium Manganese (CAM 3) compared to CAM 1 and CAM 2, with SME improving from 3.5% to 5.5% as Manganese (Mn) content increases, reflecting an increase in dislocations within the metal’s crystal structure. Surface roughness increases with higher feed rates and depths of …

A Study Of Xlpe Insulation Failure In Power Cables Under Electromagnetic Stress, Babu Naik Gugulothu, Sanjay Lakshminarayanan, Madhu Palati, Suresh Haleyur Lakshmegowda

Open Access archive

Underground cables with cross-linked polyethylene (XLPE) insulation are integral to medium voltage (MV) power transmission systems, ensuring continuous electricity supply amidst operational challenges and environmental conditions. However, the reliability of these cables can be compromised over time due to aging and installation-related factors, particularly at joints and terminations. This study offers a comprehensive analysis of how various defects, including spherical air voids, pinholes, and irregularities in semiconducting layers, affect electric field and potential distributions within cable end terminations using COMSOL Multiphysics software. Through detailed simulations, the study identifies significant variations in electric field strength caused by these defects, highlighting critical …

Prevalence Of Morphological Variations Of Median Maxillary Labial Frenum Among Patients Visiting A Tertiary Center In Ernakulam District, Kerala, Sthuthi Vijaya Kumar, Reshma Suresh, Venkitachalam Ramanarayanan, Maya Rajan Peter

Open Access archive

Aim: The objective of this study is to determine the frequency of morphological changes in distinct median maxillary labial frenum among patients presenting to a tertiary health care center in Ernakulam, Kerala. Additionally, gender and age differences in frenal morphology were examined. Materials and methods: The study was conducted during the period from February 2022 to January 2023 among people who visited a tertiary health care center in Ernakulam and above, after obtaining official permission from the Institutional Ethics Committee of Amrita Institute of Medical Sciences (IRB-AIMS-2020-110). The frenum morphology was determined using the direct visual method under natural light …

Acute Kidney Injury In Neonates With Perinatal Asphyxia: A Descriptive Analysis, Y. Ramesh Bhat, Sathiskumar Martha

Open Access archive

Introduction: Although acute kidney injury (AKI) is one of the complications of perinatal asphyxia, it is not well recognized morbidity in neonates. AKI based on serum creatinine and urine output assessments vary widely. We aimed to study the prevalence and characteristics of AKI among perinatally asphyxiated near term and term neonates. We also evaluated oliguric and non-oliguric AKI on day three of life and relationship of AKI to hypoxic-ischemic encephalopathy (HIE) stages. Further we compared mortality among asphyxiated neonates with and without AKI as well as mortality among oliguric AKI and non-oliguric AKI neonates. Methods: Neonates with gestation ≥ 35 …

Streamlined Electrochemical Harvesting Of Cobalt And Nickel From Soft Cemented Carbide Scrap For Superior Supercapacitors, A. Prabin, Y. N. Sudhakar, Ajesh Vijayan

Open Access archive

We propose a complete circular economy and sustainability model from soft cemented carbide scrap to supercapacitor application. An enhanced recovery of cobalt and nickel was observed when deep eutectic solvent was used. A comparative in-situ electrochemical deposition of the recovered metals was done on stainless steel (SS), SS/activated carbon (AC), and SS/AC/polyaniline (PANI). The optimization of electrochemical extraction was carried out by varying voltage, time, and temperature. The surface area and conductive polymer's electronic distribution contributed to different surface morphological deposition of specific metals on them. Unique fluffy particle deposition was observed on the surface as fine grain particles with …

Modeling Of Hydropower Plant In Islanded Mode For Different Operating Conditions, Sachin Mishra, Suresh Kumar Sudabattula, Nagaraju Dharavat, Naveen Kumar Sharma

Open Access archive

Most countries have access to abundant water resources through rivers and canals. Utilizing this renewable resource, electricity can be generated in an environmentally friendly manner without causing pollution. In rapidly developing countries like India with the abundance of natural resources and diversities, the development of Hydropower is gaining in importance to meet the country’s demand. This work discusses the different operating conditions that may occur in real time of the standalone hydro power generation system. In this work, various operating conditions are considered in terms of faults and disturbances that occur on the load side. These effects of faults and …

Optimum Management Of Microgrid Generation Containing Distributed Generation Sources And Energy Storage Devices By Considering Uncertainties, Majid Valizadeh, Alireza Hayati, Amirhosein Khosravi Sarvenoee, Mohammad Kouhzadipour

Open Access archive

In recent years, the financial and energy crises have made the economical and safe operation of distribution microgrids one of the main challenges for operators. In this regard, the optimal distribution of the microgrid, considering the favorable indicators of Generation and consumption, significantly improves the quality of the development and economic operation of electricity grids. On the other hand, distribution microgrids have many problems and complications due to the presence of DG sources and the uncertainties caused by them in Generation and consumption, such as the inability to solve optimal load distribution using common and common calculation methods. Therefore, grid …

Drain And Treat: A Rubber Dam Technique For Acute Periapical Abscess, S. Grover, K. Mala, Janina Loren D'Souza

Open Access archive

Patients often report to the dental hospital with a complaint of toothache with extraoral swelling. Worried patients visit the dentist with a lot of apprehension. Acute dental infections with intraoral and extraoral swellings can be emergency and challenging to manage. Reduced mouth opening and severe pain may not allow the dentist to create an orthograde access to root canals. It ensues when the bacteria spread from the dental pulp to the surrounding periapical tissues accompanied by the formation of pus. If left untreated, these infections can be excruciatingly painful and pose a severe risk of spreading to facial spaces and …

Leaf Spot-Associated Pathogenic Fungi Alter Photosynthetic, Biochemical, And Metabolic Responses In Eggplant During The Early Stages Of Infection, Arya Kaniyassery, Madhavi Hegde, Sudhanva Bhimanakatte Sathish, Sachin Ashok Thorat

Open Access archive

Eggplant is prone to several fungal diseases, of which leaf spot disease is the one of the most devastating in the Mattu Gulla variety of eggplant. The current investigation focuses on assessing the pathogenicity of fungi associated with the leaf spot disease and the effects of fungal infection on host plant physiology, biochemistry, and metabolism. Four fungi, Alternaria solani, Alternaria alternata, Fusarium solani, and Lasiodiplodia theobromae, associated with leaf spot disease, were found to have pathogenic potential in Mattu Gulla. Plants inoculated with these pathogenic fungi altered photosynthetic rates and chlorophyll pigment contents as the fungal infection progressed, even though …

Efficient Removal Of Hexavalent Chromium From Wastewater Using A Novel Magnetic Biochar Composite Adsorbent, Rajesh Juturu, Raja Selvaraj, Vytla Ramachandra Murty

Open Access archive

Hexavalent chromium (Cr(VI)) in wastewater poses serious environmental and ecological risks. A novel Fe3O4-loaded magnetic biochar (MBC) using Acacia falcata leaf powder was synthesized via one-step hydrothermal carbonization for efficient Cr(VI) removal. FESEM images revealed porous, irregular structures, and EDS analysis confirmed Fe, O, C, and Cr presence, validating chromium adsorption. XRD indicated a lattice parameter of 0.8407 nm, characteristic of magnetite nanoparticles, with an average crystallite size of 11.29 nm. MBC exhibited superparamagnetic behavior facilitating easy separation. The deconvolution of XPS spectra for chromium revealed distinct peaks at 575.6 and 585.7 eV, corresponding to Cr(III), and 577.3 and 587.8 …

Pls-Based Hellinger Distance Method For Fault Detection In Chemical Engineering Systems, K. Ramakrishna Kini, Fouzi Harrou, Muddu Madakyaru, Ying Sun

Open Access archive

Fault detection is vital in chemical engineering systems to maintain operational efficiency, product quality, and safety through timely identification and correction of deviations from expected behavior. Although partial least squares (PLS) has proven effective in monitoring due to its ability to handle highly correlated variables, traditional detection metrics of PLS may fail to identify small abnormal changes as they rely solely on recent observations. This paper integrates PLS modeling framework with Hellinger Distance (HD)-based fault detection index to overcome the limitations of conventional detection metrics. The utilization of HD is motivated by its sensitivity to quantifying any dissimilarity between distributions, …

“Financially Palliative”: The Need To Address A Perplexing Financial Conundrum In Emergency And Critical Care, Rachana Bhat, Akshaya Ramaswami

Open Access archive

The terminology “Financially Palliative” is a pseudonym and refers to a unique challenge faced in countries where public healthcare insurance coverage is not robust and the percentage of out-of-pocket health expenditure continues to be high. Emergency and critical care healthcare expenditures in such circumstances usually pose additional burden as they are unforeseen expenses, disproportionately high, for which most people are unprepared. Such situations may lead into a vicious cycle that initiates with expenditure hesitancy and delay in definitive care, which in turn leads to deterioration in the patient’s condition and delay-related complications. This further fuels expenditure hesitancy due to uncertain …

Isoniazid-Induced Pancreatitis: A Systematic Review, Tejaswini Baral, Sonal Sekhar M, Levin Thomas, Roopa Acharya B

Open Access archive

Background: Isoniazid-induced pancreatitis is a potentially serious adverse drug reaction, however, the frequency of its occurrence is unknown. We conducted a systematic review to explore this adverse drug reaction comprehensively. Methods: We performed an advanced search in PubMed, Web of Science, Scopus, Ovid, and Embase for studies that reported isoniazid-induced pancreatitis. From the extracted data of eligible cases, we performed a descriptive analysis and a methodological risk of bias assessment using a standardized tool. Results: We included 16 case reports from eight countries comprising 16 patients in our systematic review. Most of the isoniazid-induced pancreatitis cases were extrapulmonary tuberculosis cases. …

Electromagnetic Theory And Applications, 2nd Edition, Nicholas Madamopoulos, George Kliros

Open Educational Resources

This book intends to provide both the fundamentals of Electromagnetics but also some practical applications of the concepts covered. Having taught electromagnetics for several years, the authors feel that many times the field of electromagnetics comes as “old” and often times students do not appreciate the concepts and their importance in everyday applications. The authors intend to accompany the EM concepts with life applications. Hence, students may see the direct impact of the knowledge they acquire through the study of the field of electromagnetics and better appreciate the field.