Engineering Commons^™

Challenge-Based Learning & Steam Curriculum, Diana Lockwood

The Transdisciplinary STEAM+ Journal

STEAM education is being integrated into elementary schools as a way to engage more students in creativity, hands-on learning, and problem-based learning also referred to as Challenge-Based-Learning (CBL). This article focuses on elementary educators’ curriculum design for STEAM and presenting students with open-ended questions phrased as a challenge as a way to raise student interest and achievement (DeJarnette, 2018; Hunter-Doniger, 2018). When students received challenges to solve, they felt more open to sharing their ideas since there was more than one potential right answer (DeJarnette, 2018; Drake, 2012). When implementing CBL, teachers act as facilitators using a constructivist approach as …

Comprehensive Wind Speed Forecasting-Based Analysis Of Stacked Stateful & Stateless Models, Swayamjit Saha, Amogu Uduka, Hunter Walt, James Lucore

Graduate Student Research Symposium

Wind speed is a powerful source of renewable energy, which can be used as an alternative to the non-renewable resources for production of electricity. Renewable sources are clean, infinite and do not impact the environment negatively during production of electrical energy. However, while eliciting electrical energy from renewable resources viz. solar irradiance, wind speed, hydro should require special planning failing which may result in huge loss of labour and money for setting up the system. In this poster, we discuss four deep recurrent neural networks viz. Stacked Stateless LSTM, Stacked Stateless GRU, Stacked Stateful LSTM and Statcked Stateful GRU which …

Rank And Analysis Several Solutions Of Healthcare Waste To Achieve Cost Effectiveness And Sustainability Using Neutrosophic Mcdm Model, Ahmed Abdelhafeez, Hoda K. Mohamed, Nariman A. Khalil

Neutrosophic Systems with Applications

Managing healthcare waste (HCWTT) from healthcare facilities is difficult. It's high up on the list of health concerns. This growth in HCWTT has been especially visible in recent years, as the quantity of medical services available has increased. Because of the potential danger, this garbage poses to people and the planet, it must be properly disposed of. Because of ineffective waste management practices, inadequate financial resources, and a lack of adequate facilities, HCWT administration is especially crucial in developing nations. Reducing HCWT via appropriate treatment is important for the area's financial and environmental health. In order to solve single-valued neutrosophic …

Rank And Analysis Several Solutions Of Healthcare Waste To Achieve Cost Effectiveness And Sustainability Using Neutrosophic Mcdm Model, Ahmed Abdelhafeez, Hoda K. Mohamed, Nariman A. Khalil

Neutrosophic Systems with Applications

Managing healthcare waste (HCWTT) from healthcare facilities is difficult. It's high up on the list of health concerns. This growth in HCWTT has been especially visible in recent years, as the quantity of medical services available has increased. Because of the potential danger, this garbage poses to people and the planet, it must be properly disposed of. Because of ineffective waste management practices, inadequate financial resources, and a lack of adequate facilities, HCWT administration is especially crucial in developing nations. Reducing HCWT via appropriate treatment is important for the area's financial and environmental health. In order to solve single-valued neutrosophic …

Sootlib: A Soot Model Library For Combustion Simulation, Victoria B. Stephens, Joshua Bedwell, Alex J. Josephson, Keturah Oldham, David O. Lignell

Faculty Publications

Soot formation in combustion is an important process that affects radiative heat transfer, flame temperatures, and emissions with health and environmental impacts. Soot formation involves complex chemistry for nucleation, growth, oxidation, and coagulation processes. The soot particles vary widely in size and accurate modeling requires representation of the particle size distribution (PSD). Modeling soot is not trivial, and is only one of several physical processes active in combustion systems. This paper presents a software package called SootLib, which is an open-source library for modeling soot formation and other aerosol systems. SootLib is written in C++, is documented with Doxygen, and …

Hybrid Modeling For Electrochemical Systems, Luis Alejandro Briceno-Mena

LSU Doctoral Dissertations

The discovery of new materials like catalysts, polymeric films, and biomolecules, is driven by industrial needs such as improving reaction or separation selectivity, enhancing therapeutic effects on medical treatments, or reducing costs of replacement. However, deployment of these advances in industrial applications is often hindered by the lack of models needed for design and optimization. Due to the novelty of materials and devices, experimental data and first principles' knowledge are scarce, making it hard to build models either via data-driven or knowledge based approaches. In this context, a way to efficiently combine domain knowledge with data could provide a pathway …

Microfluidic Concurrent Assessment Of Red Blood Cell Adhesion And Microcapillary Occlusion: Potential Hemorheological Biomarkers In Sickle Cell Disease, Yuncheng Man, Douglas H. Wu, Ran An, Karamoja Monchamp, Utku Goreke, Zoe Sekyonda, William J. Wulftange, Chiara Federici, Allison Bode, Lalitha V. Nayak, Umut A. Gurkan

Faculty Scholarship

Deformability and non-adherence are two fundamental functional properties of red blood cells (RBCs), which allow them to move unimpeded through the microvasculature. In sickle cell disease (SCD), polymerization of abnormal sickle hemoglobin leads to decreased deformability and increased membrane adhesiveness in RBCs. This contributes to abnormal blood vessel occlusion, which is central to the underlying pathophysiology. RBC deformability and adhesiveness are, therefore key hemorheological biomarkers in characterizing disease states as well as in evaluating novel therapeutics. To date, these important interrelated biomarkers have been assessed in distinct laboratory assays, without integration or concurrent assessment in vitro. To this end, we …

Electron Energization By Inertial Alfvén Waves In Density Depleted Flux Tubes At Jupiter, P. A. Damiano, P. A. Delamere, E.-H. Kim, J. R. Johnson, C. S. Ng

Faculty Publications

Juno satellite observations have illustrated substantial examples of broadband electron energization up to 105–106 eV levels. In order to explain these observations, we use a hybrid gyrofluid kinetic-electron model in an untilted dipolar topology to illustrate energization to high levels in weak current conditions by inertial Alfvén waves close to the Jupiter ionosphere for ambient plasma densities and magnetic field perturbations inferred from Juno satellite observations. The key to the high energization is the extremely low densities evident in the observations which necessitates the acceleration of electrons to very high velocities in order to carry the field-aligned current.

Neutrosophic Critic Mcdm Methodology For Ranking Factors And Needs Of Customers In Product's Target Demographic In Virtual Reality Metaverse, Ahmed Sleem, Nehal Mostafa, Ibrahim Elhenawy

Neutrosophic Systems with Applications

Affective design has come to place a premium on customer-centric creativity, which ultimately results in the creation of a product tailored to the requirements of a certain demographic. Designing a fresh and original item that appeals to clients remains challenging, despite the abundance of literature on customer-centric creativity and impact product design. This is so because optimizing technological and aesthetical design aspects and variables for a group of consumers is highly complicated, and for the same reasons that it is hard to know a customer's choice, enable the product's functioning, etc. One of the most important parts of creating cutting-edge …

Author Gender Identification Considering Gender Bias, Manuela N. Jeyaraj, Sarah Jane Delany

Conference papers

Writing style and choice of words used in textual content can vary between men and women both in terms of who the text is talking about and who is writing the text. The focus of this paper is on author gender prediction, identifying the gender of who is writing the text. We compare closed and open vocabulary approaches on different types of textual content including more traditional writing styles such as in books, and more recent writing styles used in user generated content on digital platforms such as blogs and social media messaging. As supervised machine learning approaches can reflect …

Deeptype: A Deep Neural Network Approach To Keyboard-Free Typing, Joshua V. Broekhuijsen

Theses and Dissertations

Textual data entry is an increasingly-important part of Human-Computer Interaction (HCI), but there is room for improvement in this domain. First, the keyboard -- a foundational text-entry device -- presents ergonomic challenges in terms of comfort and accuracy for even well-trained typists. Second, touch-screen smartphones -- some of the most ubiquitous mobile devices -- lack the physical space required to implement a full-size physical keyboard, and settle for a reduced input that can be slow and inaccurate. This thesis proposes and examines "DeepType" to begin addressing both of these problems in the form of a fully-virtual keyboard, realized through a …

A Representation For Many Player Generalized Divide The Dollar Games, Garrison Greenwood, Daniel Ashlock

Electrical and Computer Engineering Faculty Publications and Presentations

Divide the dollar is a simplified version of a two player bargaining problem game devised by John Nash. The generalized divide the dollar game has n > 2 players. Evolutionary algorithms can be used to evolve individual players for this generalized game but representation—i.e., a genome plus a move or search operator(s)—must be carefully chosen since it affects the search process. This paper proposes an entirely new representation called a demand matrix. Each individual in the evolving population now represents a collection of n players rather than just an individual player. Players use previous outcomes to decide their choices (bids) in …

Neutrosophic Critic Mcdm Methodology For Ranking Factors And Needs Of Customers In Product's Target Demographic In Virtual Reality Metaverse, Ahmed Sleem, Nehal Mostafa, Ibrahim Elhenawy

Neutrosophic Systems with Applications

Affective design has come to place a premium on customer-centric creativity, which ultimately results in the creation of a product tailored to the requirements of a certain demographic. Designing a fresh and original item that appeals to clients remains challenging, despite the abundance of literature on customer-centric creativity and impact product design. This is so because optimizing technological and aesthetical design aspects and variables for a group of consumers is highly complicated, and for the same reasons that it is hard to know a customer's choice, enable the product's functioning, etc. One of the most important parts of creating cutting-edge …

Hemodynamic Investigations In Intracranial Aneurysms: A Commentary, Hang Yi, Mark Johnson, Luke Bramlage, Zifeng Yang, Bryan Ludwig

Mechanical and Materials Engineering Faculty Publications

Intracranial aneurysms (IAs) are abnormal bulges in a blood vessel in the brain that have a potential to rupture and even causing a stroke, which can lead to lasting brain damage, long-term disability, or even loss of life. It has been widely acknowledged that hemodynamic factors, e.g., instantaneous wall shear stress, time-averaged wall shear stress, wall shear stress gradient, gradient oscillatory number, oscillatory shear index, pulsatile blood flow waveform (flow rate magnitude and shape, physical flow period), relative residence time/turnover time, blood pressure, and vortex (i.e., size, location, and numbers), have a close relationship with the pathobiology (i.e., initiation, growth, …

A New Paradigm Of Reliable Sensing With Field-Deployed Electrochemical Sensors Integrating Data Redundancy And Source Credibility, Ajanta Saha, Sotoudeh Sedaghat, Sarath Gopalakrishnan, Jose Waimin, Aiganym Yermembetova, Nicholas Glassmaker, Charilaos Mousoulis, Ali Shakouri, Alexander Wei, Rahim Rahimi, Muhammad A. Alam

Department of Chemistry Faculty Publications

For a continuous healthcare or environmental monitoring system, it is essential to reliably sense the analyte concentration reported by electrochemical sensors. However, environmental perturbation, sensor drift, and power-constraint make reliable sensing with wearable and implantable sensors difficult. While most studies focus on improving sensor stability and precision by increasing the system’s complexity and cost, we aim to address this challenge using low-cost sensors. To obtain the desired accuracy from low-cost sensors, we borrow two fundamental concepts from communication theory and computer science. First, inspired by reliable data transmission over a noisy communication channel by incorporating redundancy, we propose to measure …

Boron Nitride Nanotubes: Force Field Parameterization, Epoxy Interactions, And Comparison With Carbon Nanotubes For High-Performance Composite Materials, Swapnil S. Bamane, Michael B. Jakubinek, Krishan Kanhaiya, Behnam Ashrafi, Hendrik Heinz, Gregory Odegard

Michigan Tech Publications, Part 1

Boron nitride nanotubes (BNNTs) are a very promising reinforcement for future high-performance composites because of their excellent thermo-mechanical properties. To take full advantage of BNNTs in composite materials, it is necessary to have a comprehensive understanding of the wetting characteristics of various high-performance resins. Molecular dynamics (MD) simulations provide an accurate and efficient approach to establish the contact angle values of engineering polymers on reinforcement surfaces, which offers a measure for the interaction between the polymer and reinforcement. In this research, MD simulations and experiments are used to determine the wettability of various epoxy systems on BNNT surfaces. The reactive …

Editorial: Special Issue “Protein Modeling And Simulation: Selected Articles From The Computational Structural Bioinformatics Workshop 2021”, Negin Forouzesh, Kamal Ai Nasr

Computer Science Faculty Research

No abstract provided.

Comparing Boys’ And Girls’ Attitudes Toward Computer Science, Danielle Scott, Amiee Zou, Sharin Rawhiya Jacob, Debra Richardson, Mark Warschauer

Journal of Computer Science Integration

Women are severely underrepresented in computer science (CS) degrees and careers. While student interest is a key predictor of success, little is known about how elementary students from underserved groups, such as girls, develop their interest in CS. To address this issue, we examined the differences in attitudes between upper elementary girls and boys towards CS after participating in a yearlong, inquiry-based CS curriculum designed for diverse learners. Pre-and-post surveys on students’ attitudes towards CS (n = 108) were delivered before and after student participation in the curriculum. Results from the survey showed only two demonstrated significant differences between boys …

Effects Of Post-Translational Histone Modifications On Transcription Rate, Aaron Bohn

Annual Research Symposium

No abstract provided.

School Personnel Lived Experiences Related To High School Engineering Education And The Covid-19 Pandemic, Justina R. Jackson, Katherine L. Boice, Stephen Cochran, Brooke Skelton, Jeffrey Rosen, Marion Usselman

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

This study investigated the teaching experiences of three school personnel at a public high school during the 2020–2021 school year as they implemented a unique science, technology, engineering, arts, and math (STEAM) unit with in-person and virtual students in their engineering classes during the Covid-19 pandemic. A research team interviewed two teachers and one administrator at the school to better understand the nuances of pre-college engineering during a pandemic year and how changes in school and district policy affected the instructional delivery of STEAM projects. Narrative analytic methods were utilized to understand each participant’s experience and an inductive content thematic …

Flight Testing Gls Approaches Enabled By Wide Area Corrections In Kerkyra, Greece, Thomas Dautermann, Thomas Ludwig

Journal of Aviation Technology and Engineering

Many airports with a high value to commercial air traffic have spatial or budgetary constraints which prevent the installation of a precision approach system. We previously designed a low-cost precision approach system which combines the advantages of both ground-based and satellite-based augmentation systems by using a converter between them in order to allow GAST-A approach types. We installed, operated, and flight-tested such a system at Kerkyra Airport using an A320 aircraft. During these, we recorded data from a commercial multimode receiver as well as GPS raw data in order to prove the feasibility of the system. Data were analyzed using …

Development Of A Slow-Degrading Polymerized Curcumin Coating For Intracortical Microelectrodes, Alexis M. Ziemba, Mary Clare Crochiere Woodson, Jessica L. Funnell, Douglas Wich, Bailey Balouch, Deniz Rende, Dahlia N. Amato, Jonathan Bao, Ingrid Oprea, Dominica Cao, Neda Bajalo, Evon S. Ereifej, Jeffrey R. Capadona, Edmund F. Palermo, Ryan J. Gilbert

Chemical and Biochemical Engineering Faculty Research & Creative Works

Intracortical microelectrodes are used with brain-computer interfaces to restore lost limb function following nervous system injury. While promising, recording ability of intracortical microelectrodes diminishes over time due, in part, to neuroinflammation. As curcumin has demonstrated neuroprotection through anti-inflammatory activity, we fabricated a 300 nm-thick intracortical microelectrode coating consisting of a polyurethane copolymer of curcumin and polyethylene glycol (PEG), denoted as poly (curcumin-PEG1000 carbamate) (PCPC). The uniform PCPC coating reduced silicon wafer hardness by two orders of magnitude and readily absorbed water within minutes, demonstrating that the coating is soft and hydrophilic in nature. Using an in vitro release model, curcumin …

Introduction To Bioaerosols Assessment And Control, 2nd Edition, Cheri Marcham, John (Jack) Springston

Publications

• Risk Assessment
• Assessment for the Presence of Bioaerosols
• Sampling
• Purpose/ Necessity
• Interpretation Controls
  • Ventilation
  • Other Controls

Strengthen Building Of Basic Reach Capacity For Semiconductor Research To Light Up “Beacon” Towards Realizing The Self-Reliance And Self-Improvement Of Semiconductors, Junwei Luo, Shushen Li

Bulletin of Chinese Academy of Sciences (Chinese Version)

No abstract provided.

Causes, Countermeasures And Enlightenment Of “Eu Semiconductor Crisis”: Interpretation Around The European Chips Act, Junfeng Li, Ying Zhang

Bulletin of Chinese Academy of Sciences (Chinese Version)

The European Union (EU) is one of the origins of the global semiconductor industry, but due to its structural defects in the semiconductor value chain, it has encountered a crisis of chip shortages and supply cuts since 2021. The European Chips Act drafted by EU proposes a path for semiconductor ecological construction, crisis intervention regulatory measures, and outlines a blueprint for a "national system for the chip industry with EU characteristics". These factors are of speculative significance and reference value for China to balance the relationship between the government and the market, subsidies and competition, key construction and inclusive support …

Analysis On Bottleneck And Prospect Of Integrated Circuit Talent Training Oriented To Sci-Tech Self-Reliance And Self-Strengthening At Higher Levels, Kaixuan Guan, Jiang Yu, Jianzhong Zhou, Feng Chen, Yan Han

Bulletin of Chinese Academy of Sciences (Chinese Version)

The most essential feature of building a new development paradigm is to achieve sci-tech self-reliance and self-strengthening at higher levels. The integrated circuit industry, as an important pillar to achieve this essential feature, is facing a severe external situation. China's chip shortage pain begins with a shortage of talents. The structural problem of uneven development at the overall level of the industry makes it more difficult to effectively gather and distribute talents. To achieve sci-tech self-reliance and self-strengthening at higher levels, we need to be both demand-oriented and problem-oriented, which means not only to pay attention to the core technology …

Modelling And Optimization For An Operating Giant Gas Plant In Egypt, Nessren Farrag, Mohamed Shebl, Mai Fouad, Abdulaziz Abdulaziz

Chemical Engineering

An Egyptian gas-producing plant located in the north of Egypt on the coast of the Mediterranean Sea near Port Said city is designed mainly to receive and treat natural gas produced from offshore wells. The plant designed capacity is around 2800 million standard cubic feet per day (MMSCFD), which gives it a highly appreciated strategic importance. The primary plant process is removing H2S associated with the produced gas using amine solutions. The plant contains seven units called gas trains, which use packed columns for the removal. An additional acid gas removal unit was involved in the early production facility, which …

The Santa Clara, 2023-02-17, Santa Clara University

The Santa Clara

No abstract provided.

A P53-Tlr3 Axis Ameliorates Pulmonary Hypertension By Inducing Bmpr2 Via Irf3, Aneel R. Bhagwani, Mehboob Ali, Bryce Piper, Mingjun Liu, Jaylen Hudson, Neil Kelly, Srimathi Bogamuwa, Hu Yang, James D. Londino, Joseph S. Bednash, Daniela Farkas, Rama K. Mallampalli, Mark R. Nicolls, John J. Ryan

Chemical and Biochemical Engineering Faculty Research & Creative Works

Pulmonary arterial hypertension (PAH) features pathogenic and abnormal endothelial cells (ECs), and one potential origin is clonal selection. We studied the role of p53 and toll-like receptor 3 (TLR3) in clonal expansion and pulmonary hypertension (PH) via regulation of bone morphogenetic protein (BMPR2) signaling. ECs of PAH patients had reduced p53 expression. EC-specific p53 knockout exaggerated PH, and clonal expansion reduced p53 and TLR3 expression in rat lung CD117+ ECs. Reduced p53 degradation (Nutlin 3a) abolished clonal EC expansion, induced TLR3 and BMPR2, and ameliorated PH. Polyinosinic/polycytidylic acid [Poly(I:C)] increased BMPR2 signaling in ECs via enhanced binding of interferon regulatory …

An Older Diabetes-Induced Mice Model For Studying Skin Wound Healing, Carlos Poblete Jara, Guilherme Nogueira, Joseane Morari, Thaís Paulino Do Prado, Renan De Medeiros Bezerra, Lício A. Velloso, William Velander, Eliana Pereira De Araújo

Department of Chemical and Biomolecular Engineering: Faculty Publications

Advances in wound treatment depend on the availability of animal models that reflect key aspects of human wound healing physiology. To this date, the accepted mouse models do not reflect defects in the healing process for chronic wounds that are associated with type two diabetic skin ulcers. The long term, systemic physiologic stress that occurs in middle aged or older Type 2 diabetes patients is difficult to simulate in preclinical animal model. We have strived to incorporate the essential elements of this stress in a manageable mouse model: long term metabolic stress from obesity to include the effects of middle …