Engineering Commons^™

The Development Of A Novel Motion Cuing Algorithm For Flight Training Simulators Employing Objective Metrics For Evaluation, Ahmad Qasim Momani

Link Foundation Modeling, Simulation and Training Fellowship Reports

The value of a dynamic motion platform to the flight simulator is a controversial issue within the flight training community. The motion of the flight simulator platform has been shown to affect pilot performance and behavior. Moreover, its ability to provide the operator with the appropriate motion cues is essential for pilot training or research. Unwanted cues can cause the operator to develop inappropriate control behavior strategies that are not useful or might be dangerous in real flight. Performance studies show that the operator’s performance is enhanced when introducing motion which might indicate that the operator experiences a sensation closer …

Utah State University Team Takes Top Prizes At Battle Bot Competition | College Of Engineering, Usu College Of Engineering

College of Engineering News

It was the first round. Bjorn Ironsides was flitting around Hard Reset, a professional, at high speeds.

Design, Simulation, And Construction Of An Ieee 14-Bus Power System, John Albert Boudreaux

LSU Master's Theses

Today’s bulk power system is massive, complex, and very dynamic. The U.S. power grid spans from coast to coast and even as far reaching as Canada. With the addition of new technologies such as renewable energies and power electronics to aid in power conversion and control, the power system grows more complex by the day. The most common approach of analyzing power system stability is through computer modeling and simulation. Due to the vast size and inaccessibility of transmission systems, real time testing can prove difficult. The motivation of this project was to design, simulate, and construct an IEEE 14 …

Detection Of Hydrogen Peroxide Production In The Isolated Rat Lung Using Amplex Red, Said H. Audi, Nina Friedly, Ranjan K. Dash, Andreas M. Beyer, Anne V. Clough, Elizabeth R. Jacobs

Biomedical Engineering Faculty Research and Publications

The objectives of this study were to develop a robust protocol to measure the rate of hydrogen peroxide (H₂O₂) production in isolated perfused rat lungs, as an index of oxidative stress, and to determine the cellular sources of the measured H₂O₂ using the extracellular probe Amplex red (AR). AR was added to the recirculating perfusate in an isolated perfused rat lung. AR’s highly fluorescent oxidation product resorufin was measured in the perfusate. Experiments were carried out without and with rotenone (complex I inhibitor), thenoyltrifluoroacetone (complex II inhibitor), antimycin A (complex III inhibitor), potassium …

A Tale Of Two Airlines: A Comparative Case Study Of High-Road Versus Low-Road Strategies In Customer Service And Reputation Management, Donna L. Roberts Ph.D., John C. Griffith Ph.D.

John Griffith

Ultrafine Mineral Associations In Superhigh-Organic-Sulfur Kentucky Coals, James C. Hower, Debora Berti, Michael F. Hochella Jr.

Center for Applied Energy Research Faculty and Staff Publications

Two high-organic-sulfur Kentucky coals, the eastern Kentucky River Gem coal and the western Kentucky Davis coal, are examined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), both including elemental analysis by energy-dispersive spectroscopy (EDS). From the SEM–EDS analysis, it is observed that the western Kentucky coal had areas with Pb and Cd in addition to the expected Fe and S and the eastern Kentucky coal had individual Fe–S-rich areas with La and Ni and with Si, Al, Cr, Ni, and Ti. TEM and selected area electron diffraction (SAED) analyses demonstrate that anglesite with a rim of Pb-bearing amorphous …

The Santa Clara, 2018-09-27, Santa Clara University

The Santa Clara

No abstract provided.

Batch Sizing In Sustainable Production Systems With Imperfect Quality, Farnaz Ghazi Nezami, Mojtaba Heydar

Industrial & Manufacturing Engineering Presentations And Conference Materials

In classic Economic Production Quantity (EPQ), an optimal batch size is determined to minimize total production cost including setup and inventory holding costs, and defective parts are not allowed. In this paper an imperfect EPQ system is studied to minimize the overall cost, where setup cost, scarp rate, batch size, and electrical power demand are determined by the model. In this imperfect production system, a percentage of the batch is defective in each cycle, which will be reworked at an extra charge. In addition, the model considers electrical power demand charge which accounts for a large percentage of industrial utility …

Light Scattering Measured With Spatial Frequency Domain Imaging Can Predict Stromal Versus Epithelial Proportions In Surgically Resected Breast Tissue, David M. Mcclatchy, Elizabeth J. Rizzo, Wendy A. Wells, Candice C. Black, Keith D. Paulsen, Stephen C. Kanick, Brian W. Pogue

Dartmouth Scholarship

This study aims to determine if light scatter parameters measured with spatial frequency domain imaging (SFDI) can accurately predict stromal, epithelial, and adipose fractions in freshly resected, unstained human breast specimens. An explicit model was developed to predict stromal, epithelial, and adipose fractions as a function of light scattering parameters, which was validated against a quantitative analysis of digitized histology slides for N  =  31 specimens using leave-one-out cross-fold validation. Specimen mean stromal, epithelial, and adipose volume fractions predicted from light scattering parameters strongly correlated with those calculated from digitized histology slides (r  =  0.90, 0.77, and 0.91, respectively, p-value× …

Synthesis And Characterization Of Polymer-Silica Composite Hydrogel Particles And Influence Of Hydrogel Composition On Cement Paste Microstructure, Matthew J. Krafcik, B Bose, Kendra Erk

School of Materials Engineering Faculty Publications

The objective of this research is to define the fundamental structure-property relationships of water-swollen polymer hydrogel particles that are employed as internal curing agents in cementitious mixtures, in addition to reporting a novel synthesis procedure for combining pozzolanic materials with hydrogel particles. Solution polymerization was performed to incorporate amorphous nanosilica particles within acrylic-based polymer hydrogel particles of varying chemical compositions (i.e., monomer ratio of acrylic acid (AA) to acrylamide (AM)). Experiments were designed to measure the absorption capacity and kinetics of hydrogel particles immersed in pure water and cementitious pore solution, as well as determine the impact of particles on …

Finite-Time Sliding Mode And Super-Twisting Control Of Fighter Aircraft, Kaushik Raj, Venkatesan Muthukumar, Sahjendra N. Singh, Keum W. Lee

Electrical & Computer Engineering Faculty Research

The development of two nonlinear robust higher-order flight control systems for roll-coupled maneuvers of fighter aircraft with uncertain parameters is discussed in this article. The objective is to independently control the output variables (roll angle, pitch angle and sideslip angle) using aileron, elevator and rudder control surfaces. For a nominal model of aircraft, first a finite time stabilizing (FTS) control law, based on the notion of geometric homogeneity, is designed. Then for robust control in the presence of parameter uncertainties, (i) a discontinuous sliding mode (DSM) control law and (ii) a super-twisting (STW) continuous control law is designed. It is …

Ozone-Surface Exchange And Transport And Transformation Near Ventilation Air Supply, Pradeep Ramasubramanian

Dissertations and Theses

Ozone in indoor environments can pose a health risk to human occupants; around half of exposure to this pollutant occurs inside buildings. One approach to reducing indoor O₃ levels is to mitigate O₃ as it enters a building via outdoor air ventilation supply. Often, mechanical systems that introduce outdoor air into buildings are placed on building rooftops. At the urban scale, greenery has been shown to reduce levels of some harmful pollutants, including ozone and cities like Portland, OR, are mandating green roofs be built on large commercial buildings to increase urban green surfaces. We investigate if rooftop …

Asee Tuee Phase Iv Report 2018 - Views Of Faculty & Professional Societies, Byron G. Garry

ASEE Best Practice Series Presentations

No abstract provided.

A Cognitive Framework To Secure Smart Cities, Shahab Tayeb, Neha Raste, Matin Pirouz, Shahram Latifi

Electrical & Computer Engineering Faculty Research

The advancement in technology has transformed Cyber Physical Systems and their interface with IoT into a more sophisticated and challenging paradigm. As a result, vulnerabilities and potential attacks manifest themselves considerably more than before, forcing researchers to rethink the conventional strategies that are currently in place to secure such physical systems. This manuscript studies the complex interweaving of sensor networks and physical systems and suggests a foundational innovation in the field. In sharp contrast with the existing IDS and IPS solutions, in this paper, a preventive and proactive method is employed to stay ahead of attacks by constantly monitoring network …

Comparison Of Single-Use And Steel Fermenters For Kla And Aggressive Microbial Cultures, Jason Brown, Christopher Brau, Nephi Jones

Single-Use Technologies III: Scientific and Technological Advancements

Purpose built single-use fermenters enable production facilities to utilize the single-use technologies instead of traditional stainless steel fermentor vessels without modifying their existing procedures. The manufacture lead time of the single-use fermentor hardware is a fraction of traditional vessels. As each single-use bioprocess container ships sterile and validated, reducing down time between cultures and allowing for more production volume in less space. Here we demonstrate kLa studies and aerobic cultivations with up to 2vvm gas flow in comparison of the single-use fermentors to traditional stainless steel fermenters. These single-use fermentors covering 6L-300L working volumes are specifically designed to meet the …

Single-Use And Sustainability: Continued Studies Using Lca Tools, William Whitford

Single-Use Technologies III: Scientific and Technological Advancements

The issue of plastic materials in our environment has been of recent interest. The biotechnology community has responded by examining the effects of single-use systems employed in biomanufacturing. It is natural to emphasize a particular set of environmental concerns over others, and especially the more visible ones. But, in supporting truly sustainable manufacturing systems, it is important to consider all relevant types of pollution or environmental stress. The Life Cycle Assessment (LCA) is a science-based approach for evaluating the environmental impacts, benefits, trade-offs, and burden shifts of a process in an objective format. It considers production process’ materials, equipment and …

Ultralow Dispersion Multicomponent Thin-Film Chalcogenide Glass For Broadband Gradient-Index Optics, Myungkoo Kang, Andrew M. Swisher, Alexej V. Pogrebnyakov, Liu Liu, Andrew Kirk, Stephen Aiken, Laura Sisken, Charmayne Lonergan, Justin Cook, Teodor Malendevych, Fedor Kompan, Ivan Divliansky, Leonid B. Glebov, Martin C. Richardson, Clara Rivero-Baleine, Carlo G. Pantano

Materials Science and Engineering Faculty Research & Creative Works

A novel photothermal process to spatially modulate the concentration of sub-wavelength, high-index nanocrystals in a multicomponent Ge-As-Pb-Se chalcogenide glass thin film resulting in an optically functional infrared grating is demonstrated. The process results in the formation of an optical nanocomposite possessing ultralow dispersion over unprecedented bandwidth. The spatially tailored index and dispersion modification enables creation of arbitrary refractive index gradients. Sub-bandgap laser exposure generates a Pb-rich amorphous phase transforming on heat treatment to high-index crystal phases. Spatially varying nanocrystal density is controlled by laser dose and is correlated to index change, yielding local index modification to ≈+0.1 in the mid-infrared.

Chemically Modified Cellulosic Materials As Multi-Functional Agents In Polymer Composites, Jinlong Zhang

LSU Doctoral Dissertations

Comparative flame retardancy of micro wood fiber plastic composites (WPCs) with fire retardants (1,2-bis(pentabromophenyl) ethane, metal hydroxides and nanoclay) was studied. The fire additives (1,2-bis(pentabromophenyl) ethane as well as magnesium hydroxide) obviously enhanced the fire retarding properties of WPCs. Especially, 1,2-bis(pentabromophenyl) ethane significantly reduced the total heat release as well as heat release rate. In addition, a synergistic effect of 1,2-bis(pentabromophenyl) and nanoclay was achieved for the enhanced fire retarding performance of WPCs.

A copolymer of cellulose nanocrystals (CNCs) and poly(N-vinylcaprolactam) (PVCL) (PVCL-g-CNCs) for use as thermally-responsive polymers with low critical solution temperatures (LCSTs) was synthesized via atom transfer radical …

One Root, Many Trees: Reviving Collections Practices, Kevin Farley, Emily Davis Winthrop, Ibironke Lawal, Patricia Sobczak

Charleston Library Conference

Collections are undergoing intense change and pressure from technology, budgetary uncertainties, and emerging perspectives on future approaches. Our case study—drawn from our experiences as collections librarians—examines these complex issues facing academic collections, large or small, across the profession. Through the development of “collections of distinction” within the local collection, collaborations and scholarly partnerships with colleagues and faculty, and advocacy for the importance of dedicated oversight to ensure that collections investments fulfill the academic mission, we explore possible solutions to the complicated issues defining contemporary collections practices.

Leading Through Change, Travis Mcneal

Operations Management Presentations

In this webinar, you will learn how to leverage periods of change to develop better leaders. We all hear that "the only constant is change" and that "change is hard." What if there was a different narrative? What if organizations going through change actually resulted in higher performance, engagement and better leadership? It is widely known that effective change management requires sponsorship — this means every leader, from the C-Suite to the front-line supervisor. This webinar will share practical and repeatable ways to help all leaders improve the way they lead change.

Polymer Interfaces And Biopharmaceuticals: Chemistry, Designs And Challenges, David W. Grainger

Single-Use Technologies III: Scientific and Technological Advancements

The complex interactions between biological components and polymer materials has an extensive technical history. Virtually every surface property has been invoked as being important to biological interfacial response: texture, roughness, topology, porosity, hydrophilic, hydrophobic, polar, apolar, (non)-wettable, non-fouling brushes, surface mobility, rigidity, flexibility, crystalline versus amorphous, aspect ratio. Few surface properties alone, however, provide consistent, global technical solutions to vexing biomedical technology problems, particularly with cell culture, blood, plasma, microbial milieu, and protein solutions. Bio-interface materials performance must therefore be tailored specifically to each application. Short-term contact use (minutes/hours) has different materials interface requirements than long-term (days) use; globular proteins …

Automated Foam Control In Single-Use Bioreactors Using The Single Use Foam Probe, Jordan Cobia, Ben Madsen, Emilee Madsen, Alex Hodge

Single-Use Technologies III: Scientific and Technological Advancements

Headspace foam in bioreactors can cause significant issues to a biological process among which are unfavorable metabolic conditions for cells, increased shear from bursting bubbles, cell death/entrainment, mass transfer interference and potential fouling of exhaust filters which can allow a point of entry for contamination or lead to pressure build-up and possible failure of the bioprocess container. This study investigates the efficacy of using a single use foam probe coupled with an automated response of an antifoam addition with an integrated DeltaV controller. Two 50L S.U.B.s run in parallel clearly illustrate differences; the first employing foam control using the foam …

Continuous Process Performance Enhancements For 50-500 L S.U.B.S, Ben Madsen, Jordan Cobia, Nephi Jones, Kevin Mullen

Single-Use Technologies III: Scientific and Technological Advancements

Improvements in single-use systems have allowed implementation of high-density cultures in emerging bioprocess workflows while progressive advances in media optimization and improved clone genetic selection have underscored the perceived performance limitations of single-use bioreactors (S.U.B.s). This study presents how strategic enhancements to the sparge and agitation systems of Thermo Scientific™ HyPerforma™ S.U.B.s have revealed the potential for a three- to four-fold improvement of mixing and mass transfer performance compared to legacy SUB designs. This study investigates the following:

• Bioreactor characterization, TruBio™ DeltaV™ controller optimization, online process analytics, and scalability analysis of the S.U.B. when targeting perfusion applications from 50 L …

Policies That Impact The Acceleration Of Electric Vehicle Adoption, Florida Solar Energy Center

FSEC Energy Research Center®

To better understand the influence of policy initiatives that relate to electric vehicles (EVs) have on accelerated deployment, this project focused on a number of successful public and private initiatives and policies designed to encourage the adoption of EVs and related infrastructure. References to databases that keep pace with this rapidly evolving and transformative industry are included, and best practices for design of laws and incentives are provided.

Polyestyrene And Low Density Polyethylene Oregano´S Essential Oil Functionalization For Possible Antimicrobial Active Packaging Applications, Edgar Díaz-Acosta, Claudia Rodríguez-González, Laura Valencia-Gómez, Santos Adriana Martel-Estrada, Maria Hernández-González, Hortensia Reyes-Blas, Imelda Olivas Armendáriz 1761524

Journal of Applied Packaging Research

Low density polyethylene (LDPE) and polystyrene (PS) samples were functionalized with oregano´s essential oil (OEO) for possible antimicrobial packing applications. Different concentrations of OEO were used (0.5-1.5 % v/v). Polymers were UV light irradiated during 60 min to improve the OEO adhesion through the polar groups (COOH, OH or COO-) generation on their surface. The effect of OEO different concentration on their antimicrobial activity, mechanical properties and cytotoxicity of the functionalized polymers were analyzed. All functionalized samples showed antimicrobial activity against Gram positive and Gram negative bacteria and this activity increased with OEO concentration. The addition of OEO did not …

Experimental Tests And Numerical Simulations For Failure Investigation On Corrugated Boxes Used On Household Appliance Packaging, Diego Fernandes Rodrigues, José Carlos Pereira

Journal of Applied Packaging Research

Packages made of corrugated paper are fundamental to the protection, transportation and handling of the appliance product market. During the storage and sales stages of a product, the package must resist compressive loads in different directions beyond moderate impacts. In this context, the objective of this work is to develop and implement a post-processor that allows the simultaneous analysis of two of the most common failure modes of packages made of corrugated paper: failure due to tensile or compressive stress limit, and failure due to local buckling, when the buckling of the faces of the corrugated paper between two peaks …

Intensive Mentoring And Micro-Electronics Research For Students In Engineering (Immerse) 2016 Mentoring Environment Grant, Aaron Hawkins

Journal of Undergraduate Research

The MEG funds used for this projects supported undergraduate students working in the IMMERSE program starting in the Summer of 2016. IMMERSE employed a total of 49 students. Portions of the hourly wages charged by these students for their research work came from this MEG grant.

Noncontact Speckle Contrast Diffuse Correlation Tomography Of Blood Flow Distributions In Tissues With Arbitrary Geometries, Siavash Mazdeyasna, Chong Huang, Mingjun Zhao, Nneamaka B. Agochukwu, Ahmed A. Bahrani, Lesley Wong, Guoqiang Yu

Biomedical Engineering Faculty Publications

A noncontact electron multiplying charge-coupled-device (EMCCD)-based speckle contrast diffuse correlation tomography (scDCT) technology has been recently developed in our laboratory, allowing for noninvasive three-dimensional measurement of tissue blood flow distributions. One major remaining constraint in the scDCT is the assumption of a semi-infinite tissue volume with a flat surface, which affects the image reconstruction accuracy for tissues with irregular geometries. An advanced photometric stereo technique (PST) was integrated into the scDCT system to obtain the surface geometry in real time for image reconstruction. Computer simulations demonstrated that a priori knowledge of tissue surface geometry is crucial for precisely reconstructing the …

Using Electronic Health Records To Characterize Prescription Patterns: Focus On Antidepressants In Nonpsychiatric Outpatient Settings, Joseph J. Deferio, Tomer T. Levin, Judith Cukor, Samprit Banerjee, Rozan Abdulrahman, Amit Sheth, Neel Mehta, Jyotishman Pathak

Publications

Objective To characterize nonpsychiatric prescription patterns of antidepressants according to drug labels and evidence assessments (on-label, evidence-based, and off-label) using structured outpatient electronic health record (EHR) data.

Methods A retrospective analysis was conducted using deidentified EHR data from an outpatient practice at a New York City-based academic medical center. Structured “medication–diagnosis” pairs for antidepressants from 35 325 patients between January 2010 and December 2015 were compared to the latest drug product labels and evidence assessments.

Results Of 140 929 antidepressant prescriptions prescribed by primary care providers (PCPs) and nonpsychiatry specialists, 69% were characterized as “on-label/evidence-based uses.” Depression diagnoses were associated …

Ph Evolution In Solution After Contact With Multilayer Films After Different G- Irradiation Doses And Thus Reconciliation Of Ph And Toc With Carboxylic Acids Detected By Ion Chromatography, Samuel Dorey, Fanny Gaston, Nathalie Dupuy, Magali Barbaroux, Sylvain R.A. Marque

Single-Use Technologies III: Scientific and Technological Advancements

For a number of various uses (storage, mixing, freezing, transportation, formulation, and filling) biopharmaceutical solutions are stored in sterile single-use plastic bags. Material transfers can then occur between containers and contents. These migrations, of different types, depend on the physicochemical characteristics of the material (composition, pH, solubility, viscosity, molecular weight, etc.), the nature of the product (solid, semi-solid and liquid) and the conditions of the material utilization. In the case of single-use polymers, γ-irradiation sterilization of the polymer is often carried out. The interactions could be therefore influenced by the dose and the contact time between the container and the …