Engineering Commons^™

Investigation Of Information Security Incidents In The Enterprise, Fayzullajon Botirov

Chemical Technology, Control and Management

This article analyzes the concept of investigating information security incidents and the processes of responsibility for their commission, checking the place where the incident occurred, collecting and storing their data, as well as organizing the investigation of information security incidents at the enterprise.

Evaluating The Impacts Of The Transition From Open-Pit To Underground Mining On Sustainable Development Indexes, Naser Badakhshan, Kourosh Shahriar, Sajjad Afraei, Ezzeddin Bakhtavar

Journal of Sustainable Mining

Sustainable development is about creating a balance between development and environment, and it consists of three essential principles: environment, society, and economy. Today, one of the most important challenges in deep open pit mines is the transition from open pit to underground, which has positive and negative impacts on sustainable development indexes. In order to reduce these adverse impacts, the impact of various parts of the transition operation on these indexes should be evaluated and corrective and preventive measures should be implemented. In this study, using a hybrid semi-quantitative approach, the effects of the transition in the Songun copper mine …

Exploring The Use Of Virtual Reality In Designing And Prototyping Medical Devices, Evan Marsh

Honors Program: Senior Projects (Public)

A degree in engineering is highly sought after in the United States. Despite the grueling coursework and sacrifices involved in earning an engineering degree, the rewards after college are numerous. However, the engineering field is vast, and the degree obtained is not always the profession followed in industry. A lot of what we learn in the college of engineering is very broad and surface-level. It is worth noting that only about 10% of what engineering students learn in school is applicable in the workplace, but they wish they had learned a lot more about that 10%.

Contextualizing And Integrating Practices: Reclaiming Authenticity Lost From Translating Workplace Engineering Practices Into K-12 Standards, Anne E. Leak, Lindsay M. Owens, Kelly Norris Martin, Benjamin M. Zwickl

Journal of Pre-College Engineering Education Research (J-PEER)

K-12 students need to become familiar with engineering because 21st-century careers integrate engineering practices across all science, technology, engineering, and mathematics (STEM) fields. While the Next Generation Science Standards (NGSS) emphasize learning real science and engineering practices, further work is needed to authenticate engineering for K-12 education. The NGSS are presented in a way that merges a single general practice with a core disciplinary idea and cross-cutting concept. Based on this framing and underlying epistemology, NGSS engineering practices are often implemented as overgeneralized, isolated, and largely context-neutral. Yet, in the STEM workplace, practices are rarely done in isolation from one …

Properties Of Redefined Neutrosophic Composite Relation, Sudeep Dey, Gautam Chandra Ray

Neutrosophic Systems with Applications

The notion of single-valued neutrosophic composite relation was redefined by S.Dey and G.C.Ray in the year 2022. In this article, we investigate some basic properties of the redefined neutrosophic composite relation.

An Assessment Of Urban Change And Its Drivers In Suleja Local Government Area Of Niger State, Nigeria, Bamiji Michael Adeleye, Kenneth Ssemwogerere, Paul Isolo Mukwaya, Amin Tamale Kiggundu, Fredrick Omolo-Okalebo, Lydia Mazzi Kayondo

CSID Journal of Infrastructure Development

The knowledge of urban change is critical to the management and planning of urban areas. Robust geospatial technologies have increasingly enhanced our understanding of urban change. This paper employs remote sensing and GIS data from the earth explorer data archive to assess the character and pattern of urban change in Suleja Local Government Area (Niger State in Nigeria) and its drives from 1987 to 2019. The nature and character of urban change are examined from the lens of the urban intensity index and the urban land use/cover change. Data from the geospatial techniques were corroborated with secondary data from the …

Characterization And Implementation Of An All-In-One Heating, Impedance, And Pulsing Device For Molecular Delivery Applications, Alex Otten

USF Tampa Graduate Theses and Dissertations

Cancer impacts millions of Americans every year, with an estimated 1.9 million new cases and 600,000 deaths predicted to occur in 2023 [1]. Medical professionals and scientists have developed several techniques and procedures to combat this disease including gene therapies, surgeries, and chemotherapies. Several of these techniques incorporate the use of pulsed electric fields to deliver molecular material to treat, or directly destroy, the cells of the tumor. These pulsed electric field techniques are known as gene electrotransfer, electrochemotherapy, and irreversible electroporation. All three techniques utilize different electrical parameters to achieve their target tumor reduction or expression goals. Efforts to …

Mass Spectrometry Of The White Adipose Metabolome In A Hibernating Mammal Reveals Seasonal Changes In Alternate Fuels And Carnitine Derivatives, Frazer I. Heinis, Sophie Alvarez, Matthew T. Andrews

Nebraska Center for Biotechnology: Faculty and Staff Publications

Mammalian hibernators undergo substantial changes in metabolic function throughout the seasonal hibernation cycle. We report here the polar metabolomic profile of white adipose tissue isolated from active and hibernating thirteen-lined ground squirrels (Ictidomys tridecemlineatus). Polar compounds in white adipose tissue were extracted from five groups representing different timepoints throughout the seasonal activity-torpor cycle and analyzed using hydrophilic interaction liquid chromatography-mass spectrometry in both the positive and negative ion modes. A total of 224 compounds out of 660 features detected after curation were annotated. Unsupervised clustering using principal component analysis revealed discrete clusters representing the different seasonal timepoints throughout hibernation. One-way …

Hyper-Local Weather Predictions With The Enhanced General Urban Area Microclimate Predictions Tool, Kevin A. Adkins, William Becker, Sricharan Ayyalasomayajula, Steven Lavenstein, Kleoniki Vlachou, David Miller, Marc Compere, Avinash Muthu Krishnan, Nickolas Macchiarella

Publications

This paper presents enhancements to, and the demonstration of, the General Urban area Microclimate Predictions tool (GUMP), which is designed to provide hyper-local weather predictions by combining machine-learning (ML) models and computational fluid dynamic (CFD) simulations. For the further development and demonstration of GUMP, the Embry–Riddle Aeronautical University (ERAU) campus was used as a test environment. Local weather sensors provided data to train ML models, and CFD models of urban- and suburban-like areas of ERAU’s campus were created and iterated through with a wide assortment of inlet wind speed and direction combinations. ML weather sensor predictions were combined with best-fit …

Board 121: Using Tutor-Led Support To Enhance Engineering Student Writing For All, Johanna Bodenhamer, Robert Weissbach, Ruth Camille Pflueger, Corinne C. Renguette, Brandon Sorge, Annwesa Dasgupta, Immanuel A. Edinbarough

Informatics and Engineering Systems Faculty Publications

Writing Assignment Tutor Training in STEM (WATTS) is part of a three-year NSF IUSE grant with participants at three institutions. This research project seeks to determine to what extent students in the WATTS project show greater writing improvement than students using writing tutors not trained in WATTS. The team collected baseline, control, and experimental data. Baseline data included reports written by engineering and engineering technology students with no intervention to determine if there were variations in written communication related to student demographics and institutions. Control data included reports written by students who visited tutors with no WATTS training, and experimental …

Board 87: Work In Progress Wip Comparing The Most Demanded Skills For Electrical And Computer Engineers (Ece) Graduates In The United States From The Perspective Of Ece Academic Department Heads And Ece Professional Engineers, Mohammad Al Mestiraihi, Kurt Henry Becker

Electrical and Computer Engineering Faculty Publications

When students graduate from an Electrical and Computer Engineering (ECE) program, there is a discrepancy or imbalance between the job-related competencies that firms require and what academic institutions deliver. As a result, there are more graduates who lack the skills that the market dictates. Due to the skills gap, recently recruited engineers may still need more training to gain necessary competencies, costing companies both time and money. The primary purpose of this study is to compare the skills ECE graduates should have upon graduation from ECE industry perspective and ECE academic department heads’ perspectives. In this context, this paper presents …

System-Characterized Artificial Intelligence Approaches For Cardiac Cellular Systems And Molecular Signature Analysis, Ziqian Wu

Dartmouth College Ph.D Dissertations

The dissertation presents a significant advancement in the field of cardiac cellular systems and molecular signature systems by employing machine learning and generative artificial intelligence techniques. These methodologies are systematically characterized and applied to address critical challenges in these domains. A novel computational model is developed, which combines machine learning tools and multi-physics models. The main objective of this model is to accurately predict complex cellular dynamics, taking into account the intricate interactions within the cardiac cellular system. Furthermore, a comprehensive framework based on generative adversarial networks (GANs) is proposed. This framework is designed to generate synthetic data that faithfully …

An Aptamer-Based Microelectrode With Tunable Linear Range For Monitoring Of K+ In The Living Mouse Brain, Yuan-Dong Liu, Jia-Run Li, Li-Min Zhang, Yang Tian

Journal of Electrochemistry

Potassium ion (K⁺) is widely involved in several physiopathological processes, and its abnormal changes are closely related to the occurrence of brain diseases of cerebral ischemia. In vivo acquirement of K⁺ variation is significant to understand the roles of K⁺ playing in brain functions. A microelectrode based on single-stranded DNA aptamers was developed for highly selective detection of K⁺ in brain, in which the aptamer probes were designed to contain an aptamer part for specific recognition of K⁺, an alkynyl group used for stable confinement of aptamer probe on the gold surface, and …

Automated Reinforcement In Construction 3d Printing: An Investigation Of Mechanical And Macrostructural Performance Of Reinforced 3d-Printed Structures, Hassan Ahmed

LSU Master's Theses

Conventional construction with steel reinforcement is widely accepted and utilized worldwide for its proven strength, durability, design flexibility, cost-effectiveness, and due to available standards and design codes. Integration of reinforcement in construction 3D printing, however, presents multi-faceted challenges that may influence the structural properties of printed components and have hindered the widespread adoption of reinforced 3D-printed structures. This study explored two complementary reinforcement techniques, namely, steel fibers and threaded reinforcement, to reinforce 3D-printed structures. This study explored both the fresh and hardened properties of 3D-printed mixtures that contain very high steel fiber dosages of up to 2.5% by volume. Additionally, …

Streamflow Reconstructions Using Tree-Ring-Based Paleo Proxies For The Sava River Basin (Slovenia), Glenn Tootle, Abdoul Oubeidillah, Emily Elliott, Giuseppe Formetta, Nejc Bezak

Civil Engineering Faculty Publications

The Sava River Basin (SRB) extends across six countries (Slovenia, Croatia, Bosnia and Herzegovina, Serbia, Albania, and Montenegro) and is a major tributary of the Danube River (DR). The Sava River (SR) originates in the alpine region of Slovenia, and, in support of a Slovenian government initiative to increase clean, sustainable energy, multiple hydropower facilities have been constructed within the past ~20 years. Given the importance of this river system for varying demands, including energy production, information about past (paleo) drought and pluvial periods would provide important information to water managers and planners. Seasonal (April–May–June–July–August–September—AMJJAS) streamflow data were obtained for …

Intrinsic Point Defects (Vacancies And Antisites) In Cdgep2 Crystals, Timothy D. Gustafson, Nancy C. Giles, Peter G. Schunemann, Kevin T. Zawilski, Kent L. Averett, Jonathan E. Slagle, Larry E. Halliburton

Faculty Publications

Cadmium germanium diphosphide (CdGeP₂) crystals, with versatile terahertz-generating properties, belong to the chalcopyrite family of nonlinear optical materials. Other widely investigated members of this family are ZnGeP₂ and CdSiP₂. The room-temperature absorption edge of CdGeP₂ is near 1.72 eV (720 nm). Cadmium vacancies, phosphorous vacancies, and germanium-on-cadmium antisites are present in as-grown CdGeP₂ crystals. These unintentional intrinsic point defects are best studied below room temperature with electron paramagnetic resonance (EPR) and optical absorption. Prior to exposure to light, the defects are in charge states that have no unpaired spins. Illuminating a CdGeP_{2 …}

Gold Thin Film Electrodes For High Sensitivity & Selectivity Electrochemical Detection Of Arsenite In Water, Tybur Q. Casuse Driovínto

Civil Engineering ETDs

This is partial fulfillment of a dissertation defense on electrochemical detection of Arsenic (As) in water using gold (Au) nanofilms as sensing electrodes. The maximum contaminant level of Arsenic in drinking water is set at 10 g L^-1 by the WHO and USEPA. Electrochemical detection by linear stripping voltammetry has comparable detection limits to more expensive laboratory-based methods but with added benefits of being portable and manufacturable. The work has developed sputtered and crystallographically oriented nanofilms for detection of trace As (III). Ultraflat Au(111) oriented thin films, Au(UTF), were compared to single crystal model electrodes to identify the impacts …

Properties Of Redefined Neutrosophic Composite Relation, Sudeep Dey, Gautam Chandra Ray

Neutrosophic Systems with Applications

The notion of single-valued neutrosophic composite relation was redefined by S.Dey and G.C.Ray in the year 2022. In this article, we investigate some basic properties of the redefined neutrosophic composite relation.

Board 317: Improving Undergraduate Stem Writing: A Collaboration Between Instructors And Writing Center Directors To Improve Peer-Writing Tutor Feedback, Robert Weissbach, Ruth Camille Pflueger, Immanuel A. Edinbarough, Corinne C. Renguette, Brandon Sorge, Gamini P. Mendis, Matthew Rothrock, Annwesa Dasgupta, Johanna Bodenhamer

Informatics and Engineering Systems Faculty Publications

Undergraduate STEM writing skills, especially in engineering fields, need improvement. Yet students in engineering fields often do not value writing skills and underestimate the amount of writing they will do in their careers. University writing centers can be a helpful resource, but peer writing tutors need to be prepared for the differences between writing for the humanities and writing in STEM fields.

The Writing Assignment Tutor Training in STEM (WATTS) model is designed to improve tutor confidence and student writing. In this innovative training, the writing center supervisor collaborates with the STEM instructor to create a one-hour tutor-training where the …

Colorful "Stars" In The Dark, Chao Jing, Yi-Tao Long

Journal of Electrochemistry

Plasmonic nanoparticles such as Au and Ag with localized surface plasmon resonance (LSPR) property exhibit unique scattering and absorption features. The plasmonic scattering and absorption bands are mainly located at visible light region which can be easily applied in visual detections. By modulating the size, shape, and composition of gold and silver colloid solutions, plenty of colorimetric methods have been constructed for the detection of metal ions, biomolecules, and environmental contaminants, etc. For many years, the LSPR-based measurements are implemented in reagent tubes. Since 2000, the plasmon resonance scattering (PRS) light of metal nanoparticles captured by dark-field microscopy enables the …

Recent Advances In Electrochemical Impedance Spectroscopy-Based Pathogenic Bacteria Sensing, Tao Chen, Yuan-Hong Xu, Jing-Hong Li

Journal of Electrochemistry

Pathogenic bacteria have been throwing great threat on human health for thousands of years. Their real-time monitoring is in urgent need as it could effectively halt the spread of pathogenic bacteria and thus reducing the risk to human health. Up till now, diverse technologies such as electrochemistry, optics, piezoelectricity and calorimetry have been developed for bacteria sensing. Therein, electrochemical impedance spectroscopy (EIS)-based sensors show great potential in point-of-care bacterial analysis because of their low-cost, short read-out time, good reproducibility, and portable equipment construction. In this review, we will primarily summarize the typical applications of electrochemical impedance technology in bacteria sensing …

Scanning Photoelectrochemical Microscopic Study In Photoinduced Electron Transfer Of Supramolecular Sensitizers-Tio2 Thin Films Systems, Sheng-Ya Zhang, Min Yao, Ze Wang, Tian-Jiao Liu, Rong-Fang Zhan, Hui-Qin Ye, Yan-Jun Feng, Xiao-Quan Lu

Journal of Electrochemistry

Crafting charge transfer channels at titanium dioxide (TiO₂) based photoanodes remain a pressing bottleneck in solar-to-chemical conversion technology. Despite the tremendous attempts, TiO₂ as the promising photoanode material still suffers from sluggish charge transport kinetics. Herein, we propose an assembly strategy that involves the axial coordination grafting metalloporphyrin-based photosensitizer molecules (MP) onto the surface-modified TiO₂ nanorods (NRs) photoanode, forming the composite MP/TiO₂ NRs photoelectrode. As expected, the resulted unique MP_B/TiO₂ NRs photoelectrode displays significantly improved photocurrent density as compared to TiO₂ NRs alone and MP_A/TiO₂ NRs photoelectrode. Scanning …

Developing And Testing Low-Cost Air Cleaners For Safer Spaces During Wildfires, Brett William Stinson

Dissertations and Theses

Air cleaning reduces indoor exposure to fine particulate matter (PM_2.5) during wildfire events. However, resource and cost restraints may limit access to air cleaning during such an event, as both commercial devices and the high-rated MERV filters that homemade assemblies typically rely upon tend to be expensive and in short supply. With these barriers in mind, we sought to develop and evaluate the potential for air cleaners that use common household fabrics as filtration media. Evaluated designs use a box fan to move air across fabric filters; box fans are inexpensive and readily available to many households. Ultimately, …

Waste-To-Watts: An Energy Analysis Of Municipal Solid Waste As Fuel, Marianna Fischer, Brandon Lewis, Avary Zachary

2023 Symposium

Across the United States, there are two pressing problems: garbage disposal and electricity generation. Firstly, the infrastructure in place doesn’t properly dispose of or reuse municipal solid waste. In addition, power insecurity is becoming more prominent as power grids are becoming outdated. This project aims to provide an alternative solution for both issues by using a Brayton cycle based waste-to-energy incinerator. The overall system efficiency relies heavily on the feedstock used for incineration. One way efficiency can be increased is through pelletizing trash, ensuring an even burn profile, providing the correct amount of feedstock, and ensuring adequate energy production. However, …

Applications Of Uavs In Mine Industry: A Scoping Review, Dang Tuyet Minh, Nguyen Ba Dung

Journal of Sustainable Mining

In recent years, a variety of technologies have improved mining operations. One of them is the Unmanned Aerial Vehicles (UAVs), the emerging technology that has been changing the mining process, boosting mining safety and productivity. The main purpose of this paper is to review the applications of UAVs in the mining industry based on the results of 113 research papers over the past twelve years, from 2010 to May 2022. The potential applications of UAVs in the mining industry are broad. Based on the paper identified, eight categories are used to classify UAV applications in the mining sector. The reviewed …

Incorporation Of Carbon Dioxide Production And Transport Module Into A Soil-Plant-Atmosphere Continuum Model, Sahila Beegum, Wenguang Sun, Dennis Timlin, Zhuangji Wang, David Fleisher, Vangimalla R. Reddy, Chittaranjan Ray

Nebraska Water Center: Faculty Publications

Carbon dioxide release from agricultural soils is influenced by multiple factors, including soil (soil properties, soil-microbial respiration, water content, temperature, soil diffusivity), plant (carbon assimilation, rhizosphere respiration), atmosphere (climate, atmospheric carbon dioxide), etc. Accurate estimation of the carbon dioxide (CO₂) fluxes in the soil and soil respiration (CO₂ flux between soil and atmosphere) requires a process-based modeling approach that accounts for the influence of all these factors. In this study, a module for CO₂ production via root and microbial respiration and diffusion-based carbon dioxide transport is developed and integrated with MAIZSIM (a process-based maize crop growth …

Empowering Student Success: Unlocking The Potential Of Project-Based Steel Design Education, Aly Mousaad Aly

Faculty Publications

In the pursuit of student success, it is essential to acknowledge that a singular teaching style does not universally cater to all students. The educator's crucial role lies in creating an optimal learning environment that fosters students' endeavors to excel. This endeavor transcends mere classroom success or employment prospects, encompassing a broader impact on societal well-being. An experiential learning approach, where students actively engage in practical tasks, emerges as the most effective mode of instruction. Integrating project-based learning activities into the curriculum holds immense potential for enhancing student learning. Additionally, the utilization of analysis software tools like FTool and STAAD …

A Multi-Scale Method For Combined Design And Dispatch Optimization Of Nuclear Hybrid Energy Systems Including Storage, Daniel Hill, Dawson Mccrea, An Ho, Matthew Memmott, Kody Powell, John Hedengren

Faculty Publications

Reliable, carbon-free power generation is increasing in importance. Nuclear-renewable hybrid energy systems (NHES) are a potential solution for current generation challenges, but design and dispatch optimization for these systems remains challenging particularly when stochastic effects, long time horizons and nonlinear modeling are needed. This work presents a multi-scale method for combining the design and dispatch optimization problems for nonlinear NHES over long time horizons. Rather than treating the entire horizon as a single optimization problem, a large number of combined optimization problems are solved for shorter samples of the horizon resulting in distributions of optimal capacities for each of the …

Experimental Verification Of Pch-Em Algorithm For Characterizing Dsern Image Sensors, Aaron J. Hendrickson, David P. Haefner, Nicholas R. Shade, Eric R. Fossum

Dartmouth Scholarship

The Photon Counting Histogram Expectation Maximization (PCH-EM) algorithm has recently been reported as a candidate method for the characterization of Deep Sub-Electron Read Noise (DSERN) image sensors. This work describes a comprehensive demonstration of the PCH-EM algorithm applied to a DSERN capable quanta image sensor. The results show that PCH-EM is able to characterize DSERN pixels for a large span of quanta exposure and read noise values. The per-pixel characterization results of the sensor are combined with the proposed Photon Counting Distribution (PCD) model to demonstrate the ability of PCH-EM to predict the ensemble distribution of the device. The agreement …

Intelligen Superpro Designer Files For Economic Simulation Of Batch And Continuous Aqueous Two-Phase Purification For Viral Products, Natalie Nold, Eric Pearson, Caryn L. Heldt

Michigan Tech Research Data

Vaccine manufacturing strategies that lower capital and production costs could improve vaccine access by reducing the cost per dose and encouraging localized manufacturing. Continuous processing is increasingly utilized to drive lower costs in biological manufacturing by requiring fewer capital and operating resources. Aqueous two-phase systems (ATPS) are a liquid-liquid extraction technique that enables continuous processing for viral vectors. To date, no economic comparison between viral vector purifications using traditional methods and ATPS has been published. In this work, economic simulations of traditional chromatography-based virus manufacturing were compared to simulations of ATPS-based virus manufacturing for the same product output in both …