Digital Commons Network^™

Strategies Managers Used To Mitigate Constraints For Project Success, Teela Washington

Walden Dissertations and Doctoral Studies

Persistent project failures result in significant financial losses and reduced project management efficacy. Project managers who struggle to complete projects to scope, on time, and on budget risk reducing business performance and organizational value. Grounded in change management theory and theory of constraints, the purpose of this qualitative pragmatic inquiry research project was to identify and explore effective strategies project managers employ to mitigate constraints and improve project success. Participants were 10 project managers who effectively mitigated constraints. Data were collected using semistructured interviews and publicly available documents. Thematic analysis yielded four key themes: leadership, resource management, stakeholder engagement, and …

Enhancing Surgical Team Readiness: Simulation Training For Power Failure Response In Robotic Procedures, Heather Marie Sorton

Walden Dissertations and Doctoral Studies

In this Doctor of Nursing Practice (DNP) project, I used a quality improvement design to implement and evaluate a simulation-based education aimed at improving perioperative staff knowledge related to robotic power-loss events. A practice gap was identified in staff preparedness for robotic system failures due to limited education on emergency protocols, communication, team roles, and Association of PeriOperative Registered Nurses (AORN)-aligned response processes, impacting patient safety during robotic-assisted procedures. I examined whether implementation of a simulation-based educational intervention improved staff knowledge related to robotic power-loss management. The purpose of the project was to improve staff knowledge and standardize responses to …

Community Business Engagement Program Report Exeter Nh July 2026, Nate Bernitz, John Christ, Patricia Prescott, Extension Community & Economic Development

UNH Cooperative Extension

No abstract provided.

Identifying Daily Oil Market Shocks: Evidence From The Hormuz Crisis, Davide Valenti Dr., Chiara Casoli, Matteo Manera, Luca Pedini

Fondazione Eni Enrico Mattei Working Papers

This paper develops a daily Bayesian structural VAR model of the global crude oil market that decomposes the real price of oil into three fundamental drivers: shocks to global real economic activity, shocks to oil price expectations and shocks to physical oil supply. We combine a daily sign-restriction identification strategy with a posterior filtering step based on monthly physical oil market data, which sharpens the economic interpretation of the estimated daily shocks. We apply the model to provide a real-time interpretation of the main drivers behind the 2026 Strait of Hormuz crisis, one of the largest and most abrupt oil …

Under Pressure: Negative Urgency And Disordered Eating In The Context Of Parental Differential Support, Hamide Gozu, Jenna K. Rieder

College of Humanities and Sciences Faculty Papers

Disordered eating behaviors are prevalent in emerging adulthood and may be shaped by family dynamics. This study examined associations among maternal and paternal differential support, weight-shape concerns, and binge eating and compensatory behaviors in emerging adulthood, while testing the moderating role of negative urgency. Participants were 517 emerging adults from across the United States (ages 18-29; M = 22.60, SD = 3.81; 76% female). Participants reported on parental differential support, weight-shape concerns, eating behaviors, and negative urgency. Using moderated-mediation analyses, we found that weight-shape concerns mediated associations between differential support and eating behaviors. Unequal maternal support and paternal favoritism showed …

Methylene Blue Dye Removal In Aqueous Solution Using Synthesized Mncuo2 Nanocomposite: Thermodynamic And Kinetic Studies, Sara Mohammed Hassan, Ahlam M. Farhan

Baghdad Science Journal

This work reports the preparation of manganese and cupper Hybrid Oxide nanocomposites by a green synthesis method. The material was characterized by X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), and Transmission Electron Microscopy (TEM). Brunauer–Emmett–Teller (BET) surface area measurements The synthesized materials were examined for their dye adsorption performance through the removal of basic methylene blue (MB) as a model compound from water. Various adsorption parameters were investigated, such as adsorbent dosage, contact time, solution pH, and temperature. Mesoporous MnCuO₂ nanocomposites displayed satisfactory results, with rapid adsorption occurring and the use of low-concentration sorbents and contact times …

Functionalization Of The Amine Group For Access To 4-Imidazolidinone-Sulfadiazine Hybrid Derivatives And Study Of Their Biological Activities, Sabaa A. Yousif, Rafid S. Dawood

Baghdad Science Journal

The work successfully synthesized twelve novel derivatives of 4-imidazolidinone bearing a sulfadiazine moiety using a one-pot reaction. This was done by condensation of sulfadiazine with twelve different aldehydes to afford the corresponding imines as intermediates, which were then followed by a cyclization reaction with glycine to furnish the desired products 1-12 in 56-85% yields. The structures of these products were identified by FT-IR and ¹H NMR spectroscopy. In addition, a number of the produced compounds demonstrated diverse antibacterial and antioxidant activities. In terms of the antibacterial activity, the compounds 1, 2, 3, 4, …

Synthesis, Spectroscopic Characterization, Biological And Computational Study For Some Metal Ions Complexes With Schiff - Mannich Base Ligand Derived From 1,3,4-Thiadiazole, Israa Rasheed Ghadhban, Shaymaa R. Baqer

Baghdad Science Journal

A new Schiff–Mannich base ligand derived from 1,3,4-thiadiazole was synthesized via the reaction of 2-amino-5-mercapto-1,3,4-thiadiazole with sulfabenzamide and indoline in the presence of formaldehyde, yielding N–(4-((5-(2-oxoindolin-3-ylideneamino)-1,3,4-thiadiazol-2-ylthio)methylamino) phenyl thiolperoxy) benzamide (L). Six multivalent metal complexes were subsequently prepared with Co(II), Ni(II), Cu(II), Pd(II), Pt(IV), and Au(III) ions. The ligand and its complexes were characterized using various spectroscopic techniques, including FT-IR, UV-Vis, ¹H NMR, and ¹³C NMR, while magnetic susceptibility and conductivity measurements were performed for the complexes. Infrared analysis revealed tetradentate coordination of the ligand to all metals, with octahedral geometries for most complexes and square planar geometries for …

A Waste-To-Fuel Approach: Utilizing Parkia Speciosa Peel Extract For Green Synthesis Of Zno Nanocatalyst, Nurul Zannah Siregar, Vivi Sisca, Isalmi Aziz, Wulandari Wulandari, Dicky Annas

Baghdad Science Journal

Biodiesel can be made by a transesterification reaction using a ZnO catalyst. This research aims to synthesize and characterize the ZnO catalyst and test its activity in producing biodiesel from waste cooking oil. ZnO was synthesized by the one-pot phytosynthesis method by adding petai peel (Parkia speciosa Hassk). ZnO catalyst size 42.9 nm. The resulting surface area and pore size are 7.629 m²/g and 1.693 nm, respectively. The particle size and constituent components of the ZnO catalyst are 93.21 nm with 82.3% (Zn) and 17.7% (O). FTIR spectra confirmed the formation of metal-oxide stretching at wave number 511 …

Synthesis, Characterization, Molecular Docking, And Anticancer Activity Of Triazole-Derived Trinuclear Metal Complexes (Tat3), Eman M. Ramadthan, Khansaa Shakir Al-Nama, Ammar H. Al-Sabawi

Baghdad Science Journal

A novel series of trinuclear coordination complexes of Co(II), Ni(II), Cu(II), Zn(II), and Cd(II) was synthesized using a triazole-based ligand, namely 4-amino-5-((bis((4-amino-5-thioxo-4,5-dihydro-1H-1,2,4-triazol-3-yl)methyl)amino)methyl)-2H-1,2,4-triazole-3(4H)-thione, (TAT3) in an alcoholic medium. The obtained complexes were investigated using a comprehensive set of physicochemical and spectroscopic techniques, including CHNS elemental analysis, Fourier-transform infrared (FT-IR) spectroscopy, UV–visible spectroscopy, proton and carbon-13 nuclear magnetic resonance (¹H and ¹³C-NMR), mass spectrometry, magnetic susceptibility measurements, and molar conductivity. Structural and surface morphology assessments were further carried out using X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). The spectroscopic and analytical data confirmed that …

Synthesis, Characterization, And Biological Evaluation Of A New Azo Dye Ligand 1-[2,4,6-Trihydroxy-3-(2-Hydroxy-Phenylazo)-Phenyl-Ethanone] And Its Complexes With Co(Ii), Ni(Ii), Cu(Ii), Zn(Ii), And Cd(Ii), Ban Hasan Al-Agele, Areej Kamal Assim Aldabbagh

Baghdad Science Journal

1-[2,4,6-trihydroxy-3-(2-hydroxy-phenylazo)-phenyl-ethanone] is a new azo dye ligand (H₂L), which was used to form a number of new azo dye-metal complexes by reaction with salt chlorides of Co, Ni, Cu, Zn and Cd(II). The complexes were characterized using mass spectroscopy, infrared analysis, ultraviolet-visible spectrophotometry, ¹H-, ¹³C-NMR spectroscopy, conductivity, magnetic susceptibility, DSC, TGA, C.H.N., metal content, and melting point. The results highlighted the ligand's trigonal behavior and that all the complexes yielded tetrahedral geometry, with the exception of Co and Ni, which produced octahedral geometry. They are all non-electrolytic. The compounds' capacity to function as antioxidants was used …

Use Of Single Particle Level From Experimental Data To Find Level Density Pre-Equilibrium Region Of Nuclear Reactions Reaction, Tibba Hassan Madhi, Ali Dawoud Salloum

Baghdad Science Journal

In this study the new formula of the single particle levels was obtained using the experimental data of the level density parameter and this new formula was substituted into the four formulae of partial level density corrected for pairing these formulae are the first method, the second method (improved pairing), the third method (exact Pauli correction) and finally the fourth method or back shift energy, where the study was conducted for ⁵⁶Fe isotope. The results of each formula were compared with the results of the same formula when the single-particle levels were used from the equidistant spacing model where …

A Spectral Approach To Join Based Operations On Graphs, S. Sripriya, A. Anuradha

Baghdad Science Journal

The success of Spectral Graph Theory is due to its immense applications in several fields of science and technology. The parameter `graph energy' plays a significant role in the Hückel Molecular Orbital Theory, where it is used to approximate the total π -electron energy of conjugated hydrocarbons. Several modified versions of the energy parameter have been defined by many researchers depending on the context. This study explores the spectral characteristics and energy distributions associated with selected graph operations derived from the first Zagreb, second Zagreb, and sum-connectivity matrices. When the adjacency matrix provides information only on the existence of a …

Reducing Unreliability Of Complex Systems By Numerical Optimization: A Hybrid Approach, Fouad Hamza Abd Alsharify, Ahmed Hasan Alridha, Zahir Al-Khafaji

Baghdad Science Journal

This paper investigates the effectiveness of numerical optimization techniques in enhancing the reliability of complex systems. The main objective of the study is to reduce the unreliability of complex systems by narrowing the range of component unreliability, thereby reducing the probability of system failure and achieving stability and robustness in the reliability of complex systems. The technique for this task involves formulating the problem as a multi-objective numerical optimization problem under specified constraints using Particle Swarm Optimization and Simulated Annealing algorithms, as well as a hybrid approach combining the two algorithms. The multi-objective optimization techniques were applied to a more …

A New Numerical Approach For Solving Caputo-Fabrizio Fractional Differential Equations, Manoj Kumar

Baghdad Science Journal

In this paper, we present a novel numerical scheme for solving fractional-order differential equations of the form ^CFD_t^η ψ ( t ) = f( t,ψ ( t ) ),ψ ( 0 ) = ψ ₀,0 < η < 1,t∈[ 0,T ], where ^CFD_t^η denotes the Caputo-Fabrizio derivative operator. Further, we establish the stability and error analysis of the proposed scheme. We also extend this scheme for solving systems of fractional differential equations. Furthermore, we perform the several numerical simulations and present the results graphically. The obtained solutions are compared with those achieved through the well-known methods such as fractional Adams-Bashforth method and a new predictor-corrector method. It has been observed that the proposed method offers greater accuracy than these established methods. Hence, the proposed scheme can be utilized for the simulations of various fractional order differential equations, when the derivatives are considered in the Caputo-Fabrizio sense.

Optimized Fast-Learning Network Model With Smote For University Network Intrusion Detection Systems, Robert Wamusi, Guma Ali, Taban Habibu

Baghdad Science Journal

Traditional Intrusion Detection Systems (IDSs) tend to have a high false positive detection rate, are time-consuming to train, and lack the flexibility to react quickly to changing cyber threats, such as Distributed Denial of Service (DDoS) attacks and phishing. Such restrictions decrease the responsiveness and reliability of the IDS services implemented in the university network, both wired and wireless, at the Uganda Christian University (UCU), where network and traffic analysis have become a necessity. This study analyzes the current threat environment of networking at UCU in terms of the type, origin, and target of various attacks to identify gaps in …

Detecting Http Flood Attacks Using 2d Array Summation, Kamal Alieyan, Belal Sudqi Khater, Ayman Ghaben, Mamoun Abu Helou, Waheeb Abu-Ulbeh, Hani Iwidat

Baghdad Science Journal

One of the popular ways of attaching networks and servers is by adopting DDoS (Distributed denial of service). The preferred sector of hacking targeted are online services and networked area with high traffic. Although innovative and modern methods have been developed to mitigate these threats, there is still a need for more effective techniques to detect DDoS HTTP flooding attacks. This paper aims to address this gap by proposing an advanced mathematical approach capable of efficiently handling, processing, and detecting DDoS HTTP flooding attacks. The paper introduces a unique method based on the summation of rows and columns in a …

State Estimation In Indoor Lifi Using Markov Chains: Polar Angle Prediction And Performance Analysis, Mohanad Sarem Almothfar, Alyaa Abdulhussein Al-Joda, Hawraa H. Abbas

Baghdad Science Journal

The reliability of Light-Fidelity (LiFi)-based indoor connectivity depends directly on the device orientation and the non-isotropic nature of the optical wireless communication (OWC) channel. In an actual indoor OWC system, the link quality varies significantly with the receiving orientation of the user equipment (UE). During deep-learning-based tracking, this variability imposes considerable computational overhead on resource-constrained IoT microcontrollers when estimating the user's position and orientation. To solve this problem, we employed a discrete Markov Chain estimator to calculate transition probabilities over 3 × 3 m and 5 × 5 m grids. The simulation and experimental results show that the higher the …

Tinyml-Based Embedded Vision System For Ic Detection In Microcontroller Manufacturing, Mark M. Pallones, King Harold A. Recto, Rynne Daven A. Barrios

Electronics, Computer, and Communications Engineering Faculty Publications

Mixing of microcontroller unit (MCU) integrated circuits (ICs) during the final testing stage of semiconductor manufacturing can lead to material waste, production delays, and customer dissatisfaction. This issue often occurs when standard JEDEC Matrix Trays (JMTs) are reused without confirming that all ICs have been removed after testing, a process typically performed through manual inspection and therefore susceptible to human error due to high test volumes, small IC package sizes, and visual similarity between IC packages and tray surfaces. This study develops an automated IC Detection Test System using embedded vision to determine whether JMT trays are empty prior to …

Zno-Functionalized Cotton Textiles With Enhanced Antibacterial Activity, Moisture Management, And Wear Comfort, Md Ariful Islam, Md Mehedi Hassan, Md Tanvir Hossain, Jakir Hossain Ridoy, Ahasan Habib

Michigan Tech Publications

Nowadays, cotton textiles with metal oxide nanoparticle functionality exhibit promising antibacterial applications; although many aspects have been tested, fabric comfort and moisture-related performance have not been sufficiently explored. In this study, cotton (twill) fabric has been functionalized by synthesizing ZnO nanoparticles (ZnO NPs) via a controlled exhaustion process followed by thermal fixation. The synthesized nanoparticles are characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD), whereas scanning electron microscopy (SEM) proves the surface morphology. Antibacterial evaluation shows effective activity against Staphylococcus aureus and Escherichia coli, with a large inhibition zone (35-36 mm) and a ∼99% reduction in bacterial …

Understanding The Mechanisms Behind Increased Load Transfer In Bmi-Flcnt Composites Using Molecular Dynamics, Swapnil S. Bamane, Prathamesh P. Deshpande, Aowabin Rahman, Ashley D. Spear, Gregory Odegard

Michigan Tech Publications

Crewed deep-space exploration is a future milestone for the aerospace industry. Such aerospace missions demand ultrastrong, lightweight structural materials to minimize the payload mass. Polymer matrix composites (PMCs) with carbon-based reinforcements, such as carbon fiber, graphene, and carbon nanotubes (CNTs), are of primary interest as structural materials for these applications. Although PMCs are lightweight and strong, their mechanical performance is limited to the weak interface region. The interface region can be strengthened by chemical functionalization of the reinforcement materials and covalent cross-linking of the matrix and the reinforcement. Molecular dynamics (MD) offers a platform for computationally investigating the effects of …

Landmark-Based Localization Of The Ansa Cervicalis And Recurrent Laryngeal Nerve For Anastomotic Reinnervation: A Cadaveric Study, Jack Hyler, Janice Wang, Paige Johnson, Kyle Singerman, Jason Brown, Sara Sloan

Student Publications

Background/Objectives: Ansa-cervicalis-to-recurrent laryngeal nerve (ARA) anastomosis is an established reinnervation procedure for unilateral vocal fold paralysis (UVFP). Successful surgery requires reliable identification of the ansa cervicalis motor entry point and the recurrent laryngeal nerve (RLN) laryngeal entry point to facilitate tension-free anastomosis while avoiding neurovascular injury. Their positions relative to a single palpable external landmark have not been quantified. Methods: Thirty-two ansa cervicales and corresponding RLNs were dissected from 23 formalin-embalmed cadavers. Mediolateral and superoinferior distances from each nerve entry point to the inferior border of the thyroid cartilage at the midline laryngeal prominence were measured and combined into a …

Effectiveness Of Np-Led Disaster Response Training: A Central Taiwan Case Study, Po-Hsi Su, Jun-Dai Lin, Yi-Hui Lee, Shun-Shiang Yu, Yi-Fen Liang

International Nursing Research Congress (INRC)

Purpose: Taiwan, situated in the Pacific Ring of Fire, is a democratic island nation prone to earthquakes and typhoons,compounded by geopolitical tensions. Enhancing national resilience via community preparedness and self-help is a key policy focus. This project evaluated the effectiveness of Emergency Nurse Practitioner (ENP)-leddisaster response training within Taiwan’s “Resilient Nation Medical Preparedness Project.” It aimed to boost community readiness, empower local health centers, and set up functional emergency medical stations through structured training and simulations.

Methods: From October 29 to November 22, 2024, five of Nantou County’s 13 health centers in Central Taiwan joined the initiative. An experienced ENP …

Elucidation Of Spin-Hamiltonian Parameters Via Spectroscopy, Magnetization, And Computation, Joshua C. Mengell

Chemistry and Chemical Biology ETDs

Molecular Quantum Information Science (QIS) is fundamentally concerned with using spin-systems as quantum bits (qubits) or as sensors. Prerequisite to using molecular systems for QIS applications, it must be understood how one can design molecules with bespoke magnetic characteristics. Herein we study various paramagnetic molecular compounds, describing their complex magnetic characteristics using a spin-Hamiltonian formalism. We utilize various (sometimes novel) methods for determining these spin-Hamiltonian parameters. Many of these molecules possess magnetic characteristics, which make them attractive as qubits or for sensing applications. These characteristics include higher total spin-states (qudits—S_T>1/2), forbidden interstate electronic transitions, systems of spatially distant …

Exploring The Nature And Role Of Local Cation Ordering In Disordered Rock Salt Cathodes For Li- And Na-Ion Batteries, You Wang

Chemistry and Chemical Biology ETDs

Cation-disordered rock-salt (DRX) cathodes provide a highly tunable platform for next-generation Li- and Na-ion batteries, but their electrochemical behavior is strongly influenced by local structural features hidden in average crystal structures. This dissertation systematically investigates local cation ordering in Li- and Na-based DRX cathodes to understand its effects on Li+/Na+ transport, redox activity, structural evolution, and electrochemical performance. In Li-based systems, Raman spectroscopy and electrochemical analysis reveal that local layered cation ordering in Mn- and Fe-based DRX cathodes is closely correlated with electrochemical behavior. Over-stoichiometric Li-based DRX oxyfluorides further demonstrate that excess Li can regulate local cation ordering, improve Li+ …

Examining Conditional Indirect Media Effects Through Normative Perceptions: The Role Of Traditional Family Gender Role Expectations And Stigmatizing Beliefs In Human Papillomavirus Vaccination, Moonsun Choi

Communication ETDs

This dissertation examines how indirect media effects operate through normative perceptions within a gendered and stigmatized health context of HPV vaccination. Specifically, this study investigates how these normative mediation processes are conditioned by traditional family gender role expectations at the norm formation stage and stigmatizing beliefs about HPV vaccination at the normative influence stage. A cross-sectional survey was conducted with mothers of children aged 9 – 12 in the United States in June 2025. The key findings show that while gendered perceptions of HPV vaccination persist, the underlying normative mechanism operated in similar ways across gender-referent contexts. Injunctive norms were …

Uv Damage Mapping Reveals Different Impacts Of Xpd Mutations On Global Genomic And Transcription-Coupled Dna Repair, Allyson Hoag

Biomedical Sciences ETDs

Nucleotide Excision Repair (NER) is a fundamental cellular process that removes bulky and helical distorting lesions from the genome through the separate responses of its two subpathways – global genomic (GG-NER) and transcription coupled (TC-NER) DNA repair. The pathways converge with the recruitment of the TFIIH complex, a key step that is mediated by the translocase and helicase activities of  its XPD subunit. Germline mutations in XPD result in the clinical disorders, Xeroderma Pigmentosum (XP) and XP combined with Cockayne Syndrome (XP/CS). The goal of this thesis was to understand if XPD XP and XP/CS mutations differentially impact GG-NER and …

Mapping And Modeling Threat-Evoked Brain States After Early Life Adversity, Taylor W. Uselman

Biomedical Sciences ETDs

Early life adversity (ELA) increases lifelong neuropsychiatric vulnerability. Yet how ELA reorganizes brain-wide activity and circuit coordination across later experience remains unclear. This dissertation tests the hypothesis that ELA alters adult brain-wide activity and responses to threat through disrupted coordination among neural systems that regulate emotional experience, including prefrontal-limbic and monoaminergic systems. Longitudinal manganese-enhanced MRI of adult mice exposed to standard or fragmented early care, combined with computational processing and statistical modeling, quantified brain states before, during, and long after innate predator threat. These studies established that acute threat evokes large-scale, distributed brain activity that evolves over time. ELA potentiates …

Prenatal Alcohol Exposure Induces Vulnerability To Mild Stress Through Heightened Limbic Glial Activation And Cytokine Release, Justine R. Zimmerly

Biomedical Sciences ETDs

Fetal alcohol spectrum disorder (FASD) results from prenatal alcohol exposure (PAE) and is linked to development of mood disorders, which in turn are driven by dysregulation of the sympathetic nervous system, the neuroendocrine hypothalamic-pituitary-adrenal (HPA) axis, and the central nervous system (CNS) neuroimmune response to stressors. PAE alters brain glial activation and proinflammatory cytokine expression through secondary challenges such as psychological stressors. The goals of the experiments presented in this dissertation were to 1) examine peripheral glucocorticoid receptor function following mild acute stress in adult PAE offspring, 2) characterize a sensitized cytokine stress response in the hippocampus, medial prefrontal cortex, …

Multiscale Network Modeling Of Native And Modified Photosynthetic Light-Harvesting Complexes, Zane E. Armijo

Chemical and Biological Engineering ETDs

Photosynthetic light-harvesting complexes harvest solar energy and direct electronic excitations toward reaction centers with exceptional efficiency. This dissertation models the Fenna--Matthews--Olson complex of green sulfur bacteria, coupled to the PscA1 reaction center, as a chromophoric network. Forster resonance energy transfer theory, validated against numerically exact hierarchical equations of motion, was implemented in kinetic Monte Carlo simulations to resolve fine-grained excitation-transport pathways. The predicted charge-transfer efficiency of 77\% agrees with experiment, with the FMO2 monomer and its gateway pigment governing interfacial transfer. Systematic single, multi, and symmetry-preserving site removals, interpreted through Mobius inversion, identify critical pigments and show that cooperative effects …