Digital Commons Network^™

Nano-Second Pulsed Laser Ablation Of Inconel 718 And Mmpcd For Simultaneous Optimal Ablation Rate And Surface Quality, Ahmed Elkaseer, Islam Abdelgaliel, Jon Lambarri, Iban Quintana, Steffen Scholz, Mohamed Aly

Mechanical Engineering

This study investigates the ablation performance of Inconel 718, a nickel-based superalloy, and metalmatrix polycrystalline diamond (MMPCD), a super composite, using a nano-second (ns) pulsed laseracross a range of ablation conditions. Single trenches varying in energy fluence and scanning speedswere created, analyzing the experimental responses in terms of ablation rate and surface roughness.Using regression techniques, models were developed to understand these relationships. Four multi-objective optimization algorithms, weighted value grey wolf optimizer (WVGWO), multi-objectivePareto search (MOPS), multi-objective genetic algorithm (MOGA), and multi-objective sunfloweroptimization (MOSFO), were employed to optimize these models. Key findings include MMPCDachieving the highest ablation rates at maximum fluence …

Understanding Women, Infant And Children Feeding Decisions In Emergencies: The Case Of Covid-19 And The Formula Shortage, Davida Mensah, Edmund F. Agyemang, Constance Gewa

School of Mathematical & Statistical Sciences Faculty Publications

Background: The advantages of breastfeeding and its role in emergencies are undeniable. Studies show that many women in developed countries choose formula over breastmilk, even in emergencies. Nevertheless, no one knows if postpartum women under the Women, Infants and Children (WIC) program turned out to breastfeed or re-lactate their infants during these crises. This study aims to better understand WIC participants' perceptions about breastfeeding their babies in emergencies.

Methods: A chi-square test of independence was used to assess the association between breastfeeding choice and demographic characteristics and potential covariates of respondents. A post hoc analysis using Dunn's multiple comparisons test …

Designing And Manufacturing Low-Cost, Tendon-Driven Soft Robots, Ted Winter-Glasgow, Pablo Borja

School of Engineering, Computing and Mathematics

Soft robots have the potential to solve many problems in areas like robotics surgery, human-robot interaction, unmanned exploration tasks, and food harvesting. However, several aspects of soft robotics are still in development, e.g., efficient designs, actuation methods, modeling, and control. This paper provides some designs of tendon-driven soft robots that can be used for educational and research purposes, boosting the understanding of these systems. The proposed designs focus on five features: low manufacturing costs, accessible fabrication methods, simple assembly processes, an open-source approach, and durability.

Biphasic Models Improved S-Metolachlor Dissipation Endpoint Predictions, K. Badou-Jeremie Kouame, Mary Savin, Cammy Willett, Thomas R. Butts, Erin Grantz, Matthew Bertucci, Samantha E. Robinson, Rodrigo Werle, Nilda Roma-Burgos

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

Accurate predictions of herbicide dissipation endpoints are essential for making environmental management decisions, estimating the duration of weed control, and deciding crop replant and rotation options. The performance of the single first-order (SFO), first-order multiple-compartment (FOMC), bi-exponential (BEXP), first-order double-exponential decay (FODED), and first-order two-compartment (FOTC) was evaluated to describe S-metolachlor dissipation. Results showed that the BEXP and FOTC were not appropriate. The FODED was ranked as the top model with the lowest Akaike's information criterion (AICc) value among the other three candidate models and was followed by the FOMC model. The SFO displayed the largest root mean square …

An Argumental Discourse Before All: An Approach To Teaching Cavendish, Jonathan L. Shaheen

ABO: Interactive Journal for Women in the Arts, 1640–1830

Cavendish directs readers of Observations upon Experimental Philosophy to begin engaging her work through "An Argumental Discourse." In this piece, I describe a way of thinking about the structure of that piece and how to understand two of its major moments in relationship to standardly taught material. The first moment is the dilemma about how inanimate matter is moved, with its response centered on treating a horse and its rider as a paradigm example of causation. The article shows how the argument involves Cavendish's conceptions of causation, minds, bodies, and mind-body interaction. The second moment has to do with the …

Utilitarian And Self-Representational: Player-To-Player Character Relationships In Final Fantasy Xiv, Zu Er Guan

Theses

This thesis studies the relationships between video game players and their player characters, the characters that they control, through the lens of player purpose and intent by conducting research using an online survey developed and analyzed using an interdisciplinary methodology based on existing studies in the field regarding avatar identification, player psychology, and queer and feminist theory. This thesis posits that are two types of player relationships with their player characters based on player intent—player characters as the personal avatar and representation of the self, and player characters as a tool for the execution of player control and gameplay experience. …

Using Gis To Visualize Daily Routines At The Neighborhood And Household Scales: A Feminist Approach Using A Nineteenth-Century Diary, Sterling D. Quinn

Journal of Feminist Scholarship

Feminist scholars in the discipline of geography have noted the ways that routine activities at the household and neighborhood scales contribute to power relations and identity formation. Geographic information systems (GIS), with their ability to create multiple visual representations of people’s experiences in space at any scale, hold great potential for revealing these local processes and patterns that are often lost or invisible in broader historical narratives, especially when they pertain to women and children. This article contributes an example by using GIS to encode and map everyday events in a diary kept by Elisabeth Koren, a nineteenth-century Norwegian immigrant …

Another Take On The Opposition Between Gender Categories, Ivan Restović

Journal of Feminist Scholarship

The gender spectrum, a continuum ranging from “male” to “female,” is a huge improvement over the traditional binary model, according to which one can be either one or the other, and no degrees are allowed. However, the model still suffers from some inadequacies, most notably the inability to represent other genders and agender identities. This is accounted for in the new “spectral” models of gender, which use independent scales to measure the degree to which a person identifies with a given gender category. However, by conceiving the amounts of gender dimensions to be mutually independent, these models invite other difficulties, …

Spectral Differencing Of Glories Reflects Cloud Droplet Size Distribution, Ilan Koren, Alex Kostinski, Uri Wollner

Michigan Tech Publications

The glory, a striking optical phenomenon seen from space in unpolarized satellite images can be mapped onto the cloud's droplet sizes with a characteristic scale of 10 (Formula presented.). Such a mapping allows us to infer the mean and variance of the cloud droplets' radius, an important property that has remained elusive and inaccessible to passive unpolarized satellite sensing. Here, we propose a simple and robust polarization-like differential approach to map the glory's spectral properties to the desired moments of the droplet size distribution. By taking the differences between two spectrally close channels, we reduce multiple scattering contributions and amplify …

All-Solid-State Sodium-Ion Batteries: A Leading Contender In The Next-Generation Battery Race, Rui-Jie Zhu, Ze-Chen Li, Wei Zhang, Akira Nasu, Hiroaki Kobayashi, Masaki Matsui

Journal of Electrochemistry

All-solid-state lithium-ion batteries (LIBs) using ceramic electrolytes are considered the ideal form of rechargeable batteries due to their high energy density and safety. However, in the pursuit of all-solid-state LIBs, the issue of lithium resource availability is selectively overlooked. Considering that the amount of lithium required for all-solid-state LIBs is not sustainable with current lithium resources, another system that also offers the dual advantages of high energy density and safety— all-solid-state sodium-ion batteries (SIBs) —holds significant sustainable advantages and is likely to be the strong contender in the competition for developing next-generation high-energy-density batteries. This article briefly introduces the research …

Contributions To Journal Of Electrochemistry, The Flagship Journal Of Chinese Chemical Society Electrochemical Committee, Will Be Listed As A New Recommendation Policy For China Youth Awards Of Electrochemist, Editorial Office Of J.Electrochem.

Journal of Electrochemistry

No abstract provided.

Agfi-Gan: An Attention-Guided And Feature-Integrated Watermarking Model Based On Generative Adversarial Network Framework For Secure And Auditable Medical Imaging Application, Xinyun Liu, Ronghua Xu, Chen Zhao

Michigan Tech Publications

With the rapid digitization of healthcare, the secure transmission of medical images has become a critical concern, especially given the increasing prevalence of cyber threats and data privacy breaches. Medical images are frequently transmitted via the Internet and cloud platforms, making them susceptible to unauthorized access, tampering, and theft. While traditional cryptographic techniques play a vital role, they are often insufficient to fully ensure the integrity and confidentiality of these sensitive images. In this paper, we present AGFI-GAN, a robust and secure framework for medical image watermarking that leverages attention-guided and Feature-Integrated mechanisms within a Generative Adversarial Network (GAN). Specifically, …

Electrochemical-Method-Induced Strong Metal-Support Interaction In Pt-Cnt@Sno2 For Co-Tolerant Hydrogen Oxidation Reaction, Shen-Zhou Li, Zi-Jie Lin, Qi-An Chen, Zhao Cai, Qing Li

Journal of Electrochemistry

Inducing the classic strong metal-support interaction (SMSI) is an effective approach to enhance the performance of supported metal catalysts by encapsulating the metal nanoparticles (NPs) with supports. Conventional thermal reduction method for inducing SMSI processes is often accompanied by undesirable structural evolution of metal NPs. In this study, a mild electrochemical method has been developed as a new approach to induce SMSI, using the cable structured core@shell CNT@SnO₂ loaded Pt NPs as a proof of concept. The induced SnO_x encapsulation layer on the surface of Pt NPs can protect Pt NPs from the poisoned of CO impurity in …

Dendrite-Free Strategies For Aqueous Zinc-Ion Batteries: Structure, Electrolyte, And Separator, Gang Wu, Wu-Hai Yang, Yang Yang, Hui-Jun Yang

Journal of Electrochemistry

Continued growth in energy demand and increased environmental pollution constitute major challenges that need to be addressed urgently. The development and utilization of renewable, sustainable, and clean energy sources, such as wind and solar, are crucial. However, the instability of these intermittent energy sources makes the need for energy storage systems increasingly urgent. Aqueous zinc-ion batteries (AZIBs) have received widespread attention due to their unique advantages, such as high energy density, cost-effectiveness, environmental friendliness, and safety. However, AZIBs face significant challenges, mainly the formation of zinc dendrites that seriously affect the stability and lifetime of the batteries, leading to battery …

Text-To-Text Generative Approach For Enhanced Complex Word Identification, Patrycja Śliwiak, Syed Afaq Ali Shah

Research outputs 2022 to 2026

This paper presents a novel approach for solving the Complex Word Identification (CWI) task using the text-to-text generative model. The CWI task involves identifying complex words in text, which is a challenging Natural Language Processing task. To our knowledge, it is a first attempt to address CWI problem into text-to-text context. In this work, we propose a new methodology that leverages the power of the Transformer model to evaluate complexity of words in binary and probabilistic settings. We also propose a novel CWI dataset, which consists of 62,200 phrases, both complex and simple. We train and fine-tune our proposed model …

Energy-Efficient Technologies For Drying Mulberry Silkworm Cocoons Using Infrared Radiation, Doston Ishmukhammat Ugli Samandarov

Technical science and innovation

The article presents the results of theoretical and experimental studies on drying of mulberry silkworm cocoons. Based on the analysis of drying efficiency and silk quality, the use of infrared radiation (IR) at a temperature of 70 °C was found to be optimal. The experimental data were tested on six mathematical models, among which the Midilli model most accurately described the drying process. The effective moisture diffusion coefficient was found to vary in the range of 1.847×10^-⁹-4.339×10^-⁹ m²/s, and the drying rate was found to be 0.32-0.79 kg of water/hour. IR radiation promotes accelerated evaporation of …

Joint Assessment Of Characteristics Of Object Parameters And Statistical Characteristics Of Disturbing Influences, Yulduz Mukhtarkhodzhaevna Abdurakhmanova

Technical science and innovation

The paper considers the problem of joint estimation of object parameters and statistical characteristics of random disturbances based on data from independent experiments. It is indicated that the use of the method of moments for the problem under consideration gives estimates that are not effective in the Rao-Kramer sense and the most common asymptotically effective estimation method, in this sense, is the maximum likelihood method(ML). However, in the case of objects with several disturbances that have distribution densities of a general form, the implementation of the ML method is difficult, since to find the values of the distribution density it …

Mathematical Model Of Control Of A Pumping Unit Used In The Technological Process Of Wastewater Treatment, Nodira Batirdjanovna Alimova Dsc, Professor, Aziza Ruzimamamovna Khaitova

Technical science and innovation

Strict environmental and health regulations, as well as the cost-effectiveness of wastewater treatment processes, have made control technology an important priority in the wastewater treatment industry. Control strategies operate on input variables (setpoint values) by choosing the values they should take to influence the evolution of state variables so that output variables (controllable variables) achieve desired values. The object is a pumping unit used in wastewater treatment technology, and its mathematical model is a set of structures reflecting the characteristics of the simulated processes. The main parameters in mathematical models are temperature and vibration level during pump operation, coordinates of …

Energy Saving Technology For Drying Garlic (Allium Sativum), Jasur Esirgapovich Safarov, Shakhnoza Abduvaxitovna Sultanova, А M. Mirkomilov

Technical science and innovation

Food drying is a widely used preservation method aimed at reducing water content to extend shelf life, decrease weight, and enhance storage efficiency. This process, particularly in garlic, involves rapid initial moisture loss followed by a slower phase due to the increasing difficulty of extracting residual water. Drying methods include natural solar drying and advanced mechanical techniques such as hot air and vacuum drying, each influencing product quality, drying efficiency, and economic feasibility. Dehydrated garlic exhibits specific sensory, physico-chemical, and microbiological characteristics, making it suitable for various applications, including powder production. Advanced drying equipment optimizes air volume, temperature, and material …

Qualitative Analysis Of The Circuits Of Autonomous Inverters With Shut-Off Valves, Shukhrat Badreddinovich Umarov

Technical science and innovation

The article presents the results of a qualitative analysis of circuits of autonomous current and voltage inverters with cut-off valves; the influence of the charge value of the switching capacitor in parallel and series equivalent circuits on the restoration of the switching properties of the thyristors of the inverter power circuit is studied. It is shown that due to the energy periodically accumulated in the inductive elements of the load, the voltage on the switching capacitor in the cut-off state is greater than in a conventional parallel autonomous current inverter. This circumstance ensures an increase in the switching stability of …

Method For Calculating Characteristic Frequency Ab (Rechargeable Batteries), Alisher Ganisher Ugli Bozorov

Technical science and innovation

A method for calculating the characteristic frequency is proposed, based on automatic interpolation of the frequency dependence of the reactance and subsequent calculation of the characteristic frequency as one of the roots of the interpolation function. The developed algorithm allows you to calculate the characteristic frequency from only 4 points of the frequency dependence of the reactance. In this case, the error in calculating the resonant frequency parameter does not exceed ~2 Hz.

Obviously, the values of the coefficients of the equation depend on the number of resistance values X and the corresponding frequencies of the test signal. The indicated …

Muramyl Peptide Blend Ameliorates Intestinal Inflammation And Barrier Integrity In Caco-2 Cells, Dmytro M. Masiuk, Victor S. Nedzvetsky, Giyasettin Baydas

Karbala International Journal of Modern Science

Intestinal barrier function depends on epithelial adhesion, which restricts permeability and microbial invasion from the internal environment. Impairment of barrier integrity and gut function is closely linked to pro-inflammatory changes. Inflammation is often the primary factor that provokes gut function disorders. The anti-inflammatory potential of postbiotics has been reported in recent years. Muramyl peptides (MPs) are small signaling molecules that stimulate intracellular pathogen receptors and can regulate cell responses. However, the molecular mechanisms of MPs' effects on intestinal cells remain unknown. The study of MPs treatment on lipopolysaccharide (LPS)-challenged Caco-2 intestinal cells aimed to investigate the postbiotic effects on intestinal …

Potential Health Risks From Trace Elements In Four Commercially Important Fish Species From The Gulf Of Alaska And Bering Sea Excel Data Sheet, Miranda Brohman, Dimtirios Giarikos, Amy Hirons

SECLER Data

Alaskan waters support a diverse array of fish species that are critical to apex predators and substantial commercial fisheries. Archived white lateral muscle tissue for capelin, herring, walleye pollock, and Pacific cod, from 1993 to 1996 were analyzed for 15 trace elements using induced coupled plasma mass spectrometry. This analysis serves as a proxy for assessing trace element concentrations in the Gulf of Alaska and Bering Sea. The highest concentrations of eight of the 15 elements (cadmium, chromium, cobalt, iron, manganese, selenium, vanadium, and zinc) were found in fish from the central Gulf of Alaska, while capelin showed the …

The Globular Cluster System Of The Virgo Cluster Ultradiffuse Galaxy Vcc 615, J. C. Mihos, Patrick R. Durrell, Elisa Toloba, Eric W. Peng, Sungsoon Lim, Patrick Côté, Puragra Guhathakurta, Laura Ferrarese

Pacific Faculty Work

We use Hubble Space Telescope imaging to study the globular cluster system of the Virgo Cluster ultradiffuse galaxy (UDG) VCC 615. We select globular cluster candidates through a combination of size and color, while simultaneously rejecting contamination from background galaxies that would be unresolved in ground-based imaging. Our sample of globular cluster candidates is essentially complete down to a limiting magnitude of F814W = 24.0, ≈90% down the globular cluster luminosity function (GCLF). We estimate a total globular cluster population for VCC 615 of N GC = 25 . 1 − 5.4 + 6.5 , resulting in a specific frequency …

Airflow Over Nasa’S X-59, Quiet Supersonic Technology (Quesst), Laina Behrenbrinker, Carson Running

Mechanical Engineering Student Publications

The X-59 QueSST is an experimental aircraft that will reach supersonic speeds without producing a loud sonic boom. Those on the ground will hear something like distant thunder as the X-59 passes overhead, around 75 dB. This paper studies the pressure distribution over the nose of the X-59 and the Sound Pressure Level (SPL) on the surface of the X-59 nose (1/3 of the total vehicle length) to better understand how sound propagates through the atmosphere. The resulting SPL over the aircraft nose is 180 – 190 dB, and further the SPL on the ground is calculated to be 43-53 …

Comparative Study Of Aerodynamic Characteristics Of Standard And Dimpled Naca 0012 Airfoil, Fahim Shahriyar, Carson Running

Mechanical Engineering Student Publications

This study analyzes the aerodynamic performance of a NACA 0012 airfoil with dimples on its upper surface, comparing it to the standard configuration. Using the Navier-Stokes equations, Blasius solutions, the k-ε turbulence model, and ANSYS Fluent, steady-state incompressible flow was simulated at 25 m/s across angles of attack from -20° to +20°. Results show the standard airfoil performs well at the low Reynolds number and lower angle of attack. The inward dimple airfoil reduces drag at negative angles, while the outward dimple airfoil enhances lift at higher positive angles. Shear stress analysis reveals laminar flow on flat plates and turbulent …

Administrators’ Perceptions Of Minoritized Students’ Underrepresentation In K-8 Gate, Vernice Verona Sharpe

Walden Dissertations and Doctoral Studies

The purpose of this qualitative study was to understand SWSD administrators’ perceptions of the practices and identification criteria that exacerbated this underrepresentation, guided by a culturally responsive school leadership framework. For this basic qualitative design, eight SWSD administrators with direct knowledge of the GATE programs participated in semistructured interviews. Data analysis involved initial and axial coding, resulting in three key themes: limited cultural awareness among administrators, the importance of incorporating community perspectives, and the need to reevaluate traditional GATE identification practices. Based on these themes, it is recommended to enhance cultural competency training, to engage community members in decision-making, and …

Administrators’ Perceptions Of Minoritized Students’ Underrepresentation In K-8 Gate, Vernice Verona Sharpe

Walden Dissertations and Doctoral Studies

The purpose of this qualitative study was to understand SWSD administrators’ perceptions of the practices and identification criteria that exacerbated this underrepresentation, guided by a culturally responsive school leadership framework. For this basic qualitative design, eight SWSD administrators with direct knowledge of the GATE programs participated in semistructured interviews. Data analysis involved initial and axial coding, resulting in three key themes: limited cultural awareness among administrators, the importance of incorporating community perspectives, and the need to reevaluate traditional GATE identification practices. Based on these themes, it is recommended to enhance cultural competency training, to engage community members in decision-making, and …

Explainable Artifacts For Synthetic Western Blot Source Attribution, João Phillipe Cardenuto, Sara Mandelli, Daniel Moreira, Paolo Bestagini, Edward J. Delp, Anderson Rocha

Computer Science: Faculty Publications and Other Works

Recent advancements in artificial intelligence have enabled generative models to produce synthetic scientific images that are indistinguishable from pristine ones, posing a challenge even for expert scientists habituated to working with such content. When exploited by organizations known as paper mills, which systematically generate fraudulent articles, these technologies can significantly contribute to the spread of misinformation about ungrounded science, potentially undermining trust in scientific research. While previous studies have explored black-box solutions, such as Convolutional Neural Networks, for identifying synthetic content, only some have addressed the challenge of generalizing across different models and providing insight into the artifacts in synthetic …

Localization Of Synthetic Manipulations In Western Blot Images, Anmol Manjunath, Viola Negroni, Sara Mandelli, Daniel Moreira, Paolo Bestagini

Computer Science: Faculty Publications and Other Works

Recent breakthroughs in deep learning and generative systems have significantly fostered the creation of synthetic media, as well as the local alteration of real content via the insertion of highly realistic synthetic manipulations. Local image manipulation, in particular, poses serious challenges to the integrity of digital content and societal trust. This problem is not only confined to multimedia data, but also extends to biological images included in scientific publications, like images depicting Western blots. In this work, we address the task of localizing synthetic manipulations in Western blot images. To discriminate between pristine and synthetic pixels of an analyzed image, …