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Articles 1 - 30 of 71
Full-Text Articles in Engineering
A Post-American World? Assessing The Cognitive And Attitudinal Impacts Of Challenges To American Exceptionalism, Jason A. Gilmore, Charles Rowling
A Post-American World? Assessing The Cognitive And Attitudinal Impacts Of Challenges To American Exceptionalism, Jason A. Gilmore, Charles Rowling
Languages, Philosophy, and Communication Studies Faculty Publications
A number of voices have emerged in U.S. political discourse questioning the legitimacy of American exceptionalism, suggesting we are in a “post-American world.” Our research examines the effects that political messages that explicitly challenge American exceptionalism can have on U.S. public opinion. Drawing upon social identity theory, we find that explicit challenges to American exceptionalism significantly impact Americans’ views toward their own nation, their willingness to denigrate foreign publics, and their broader foreign policy preferences.
Fifa: Exploring A Focally Induced Fault Attack Strategy In Near-Threshold Computing, Prabal Basu, Chidhambaranathan Rajamanikkam, Aatreyi Bal, Pramesh Pandey, Trevor Carter, Koushik Chakraborty, Sanghamitra Roy
Fifa: Exploring A Focally Induced Fault Attack Strategy In Near-Threshold Computing, Prabal Basu, Chidhambaranathan Rajamanikkam, Aatreyi Bal, Pramesh Pandey, Trevor Carter, Koushik Chakraborty, Sanghamitra Roy
Electrical and Computer Engineering Faculty Publications
In this letter, we explore the emerging security threats of near-threshold computing (NTC). Researchers have shown that the delay sensitivity of a circuit to supply voltage variation tremendously increases, as the circuit's operating conditions shift from traditional super-threshold values to NTC values. As a result, NTC systems become extremely vulnerable to timing fault attacks, jeopardizing trustworthy computing. Inspired by the operation of a polymorphic virus, we propose a novel threat model for NTC, referred to as a focally induced fault attack (FIFA). FIFA employs a machine learning framework to ascertain the circuit vulnerabilities and generates targeted software modules to cause …
Security For 5g Mobile Wireless Networks, Dongfeng Fang, Yi Qian, Rose Qingyang Hu
Security For 5g Mobile Wireless Networks, Dongfeng Fang, Yi Qian, Rose Qingyang Hu
Electrical and Computer Engineering Faculty Publications
The advanced features of 5G mobile wireless network systems yield new security requirements and challenges. This paper presents a comprehensive survey on security of 5G wireless network systems compared to the traditional cellular networks. The paper starts with a review on 5G wireless networks particularities as well as on the new requirements and motivations of 5G wireless security. The potential attacks and security services with the consideration of new service requirements and new use cases in 5G wireless networks are then summarized. The recent development and the existing schemes for the 5G wireless security are presented based on the corresponding …
Non-Orthogonal Multiple Access In A Mmwave Based Iot Wireless System With Swipt, Haijian Sun, Qun Wang, Shakil Ahmed, Rose Qingyang Hu
Non-Orthogonal Multiple Access In A Mmwave Based Iot Wireless System With Swipt, Haijian Sun, Qun Wang, Shakil Ahmed, Rose Qingyang Hu
Electrical and Computer Engineering Student Research
This paper applies non-orthogonal multiple access (NOMA) and relaying schemes in a mmWave based wireless heterogeneous system that aims to support Internet of Things (IoT) applications. The system consists of high power base stations, low-power relays, and low-power IoT devices. Due to the ad hoc deployment nature of low-power relays, they have very limited access to wireline power charging facilities. Furthermore, IoT devices normally have limited power and short battery life. The study assumes low-power relays and IoT devices are capable of energy harvest functionality. With the help of relays or IoT devices, downlink NOMA transmission consists of two phases. …
Ncer Assistance Agreement Annual Progress Report For Grant #83582401 - Assessment Of Stormwater Harvesting Via Manage Aquifer Recharge (Mar) To Develop New Water Supplies In The Arid West: The Salt Lake Valley Example, Ryan Dupont, Joan E. Mclean, Richard C. Peralta, Sarah E. Null, Douglas B. Jackson-Smith
Ncer Assistance Agreement Annual Progress Report For Grant #83582401 - Assessment Of Stormwater Harvesting Via Manage Aquifer Recharge (Mar) To Develop New Water Supplies In The Arid West: The Salt Lake Valley Example, Ryan Dupont, Joan E. Mclean, Richard C. Peralta, Sarah E. Null, Douglas B. Jackson-Smith
Civil and Environmental Engineering Faculty Publications
The aims of the original proposed project remain the same, that is, to test the hypothesis that Managed Aquifer Recharge (MAR) for stormwater harvesting is a technically feasible, socially and environmentally acceptable, economically viable, and legally feasible option for developing new water supplies for arid Western urban ecosystems experiencing increasing population, and climate change pressures on existing water resources. The project is being carried out via three distinct but integrated components that include: 1) Monitoring of existing distributed MAR harvesting schemes involving a growing number of demonstration Green Infrastructure (GI) test sites; 2) Integrated stormwater/vadose zone/groundwater/ ecosystem services modeling; and …
Hydrodeoxygenation Of Acetic Acid As A Model Compound For The Aqueous Phase Catalytic Pyrolysis Oils, Hossein Jahromi, Foster Agblevor
Hydrodeoxygenation Of Acetic Acid As A Model Compound For The Aqueous Phase Catalytic Pyrolysis Oils, Hossein Jahromi, Foster Agblevor
Biological Engineering Faculty Publications
Catalytic pyrolysis of biomass generates organic, aqueous, gaseous and solid fractions. The organic fraction can be easily hydrotreated to produce hydrocarbons, but the aqueous phase that contains between 10 to 25% soluble organics can pose challenges in wastewater treatment. The aqueous fraction from the catalytic pyrolysis of Pinyon Juniper wood was characterized for its organic content. The fraction contained about 15 wt% organic compounds determined from Karl Fischer analysis. The organic fractions were further characterized using gas chromatography and mass selective detection (GC/MS). The analysis showed that the dissolved organics were composed of acetic acid, ketones, aldehydes, and phenolic compounds. …
2016 Utah Angler Periodic Survey: Project Summary Report, R. J. Lilieholm, J. M. Keating, R. S. Krannich
2016 Utah Angler Periodic Survey: Project Summary Report, R. J. Lilieholm, J. M. Keating, R. S. Krannich
All In-stream Flows Material
This report presents results derived from an online random sample survey of Utah residents and non-residents who were licensed to fish in the State of Utah over the 2016 calendar year. The survey was designed to provide estimates of angling activity and fish caught/kept information across the State as a whole, and at specific key locations. Additional questions asked anglers about trip satisfaction, crowding, fishing methods, and boat access. Key methods and findings from this study include the following:
Hidden Curriculum, Language, And Math: How To Help Emergent Bilinguals To Succeed In Stem, Marialuisa Di Stefano, Idalis Villanueva
Hidden Curriculum, Language, And Math: How To Help Emergent Bilinguals To Succeed In Stem, Marialuisa Di Stefano, Idalis Villanueva
Engineering Education Faculty Publications
No abstract provided.
Observed Drought Indices Show Increasing Divergence Across Europe, James H. Stagge, Daniel G. Kingston, Lena M. Tallaksen, David M. Hannah
Observed Drought Indices Show Increasing Divergence Across Europe, James H. Stagge, Daniel G. Kingston, Lena M. Tallaksen, David M. Hannah
Civil and Environmental Engineering Faculty Publications
Recent severe European droughts raise the vital question: are we already experiencing measurable changes in drought likelihood that agree with climate change projections? The plethora of drought definitions compounds this question, requiring instead that we ask: how have various types of drought changed, how do these changes compare with climate projections, and what are the causes of observed differences? To our knowledge, this study is the first to reveal a regional divergence in drought likelihood as measured by the two most prominent meteorological drought indices: the Standardized Precipitation Index (SPI) and the Standardized Precipitation-Evapotranspiration Index (SPEI) across Europe over the …
Hidden Players Of Ethical Mentoring For Women Graduate Students In Science And Engineering, Laura Gelles, Idalis Villanueva, Marialuisa Di Stefano
Hidden Players Of Ethical Mentoring For Women Graduate Students In Science And Engineering, Laura Gelles, Idalis Villanueva, Marialuisa Di Stefano
Engineering Education Faculty Publications
The relationship a graduate student and their research advisor have while they work together in academia is pivotal to the development and success of the research and involved parties (Polson, 2003). Students rely on their advisor to guide them through the academic and research process while also being a role model of professional and ethical behavior (Johnson, 2016; King, 2003). In essence, a research advisor must accept the trust and confidence of the graduate student to act in their best interest by following ethical mentoring principles. However, if the advisor is unaware of the best interest of their students or …
Increasing The Measurement Cadence Of The Gridded Retarding Ion Distribution Sensor (Grids), Ryan Davidson
Increasing The Measurement Cadence Of The Gridded Retarding Ion Distribution Sensor (Grids), Ryan Davidson
Funded Research Records
No abstract provided.
The Grey To Green Infrastructure Transition - An Historical Shift In The Modern Infrastructure Paradigm, Ryan Dupont
The Grey To Green Infrastructure Transition - An Historical Shift In The Modern Infrastructure Paradigm, Ryan Dupont
Civil and Environmental Engineering Faculty Publications
No abstract provided.
Green Vs. Gray Infrastructure Cost, Rosa A. Fernández Valasquez, Ryan Dupont
Green Vs. Gray Infrastructure Cost, Rosa A. Fernández Valasquez, Ryan Dupont
Civil and Environmental Engineering Faculty Publications
No abstract provided.
An Enhanced Operational Definition Of Dielectric Breakdown For Dc Voltage Step-Up Tests, Allen Andersen, Jr Dennison
An Enhanced Operational Definition Of Dielectric Breakdown For Dc Voltage Step-Up Tests, Allen Andersen, Jr Dennison
Journal Articles
The imprecise definition of breakdown in the ASTM D3755-14 standard can misidentify breakdown. If the recommended test circuit current sensing element threshold is set too high, breakdown may occur undetected. Conversely, false positives may result from designating a low current threshold. An operational definition of breakdown much less sensitive to these pitfalls is outlined herein. This enhanced definition of breakdown is based on the average rate of change of the leakage current with increasing voltage, rather than a simple current threshold, avoiding ambiguous association with anomalies in current traces. For tests that continuously monitor leakage current, breakdown can be detected …
Shear Joy Of Watching Paint Dry, Randy Craig Hurd, Nathan B. Spiers, J. Belden, Zhao Pan, B. Lovett, W. G. Robinson, M. A. Zamora, Saberul I. Sharker, Mohammad M. Mansoor, A. Merritt, Tadd T. Truscott
Shear Joy Of Watching Paint Dry, Randy Craig Hurd, Nathan B. Spiers, J. Belden, Zhao Pan, B. Lovett, W. G. Robinson, M. A. Zamora, Saberul I. Sharker, Mohammad M. Mansoor, A. Merritt, Tadd T. Truscott
Mechanical and Aerospace Engineering Faculty Publications
This paper is associated with a video winner of a 2016 APS/DFD Milton van Dyke Award for work presented at the DFD Gallery of Fluid Motion.
Feasibility Analysis Of Electric Roadways, Regan Zane
Feasibility Analysis Of Electric Roadways, Regan Zane
Funded Research Records
No abstract provided.
Cyberinfrastructure For Advancing Hydrologic Knowledge Through Collaborative Integration Of Data Science, Modeling And Analysis, David Tarboton
Cyberinfrastructure For Advancing Hydrologic Knowledge Through Collaborative Integration Of Data Science, Modeling And Analysis, David Tarboton
Funded Research Records
No abstract provided.
Spatial Scale Gap Filling Using An Unmanned Aerial System: A Statistical Downscaling Method For Applications In Precision Agriculture, Leila Hassan-Esfahani, Ardeshir M. Ebtehaj, Alfonso F. Torres-Rua, Mac Mckee
Spatial Scale Gap Filling Using An Unmanned Aerial System: A Statistical Downscaling Method For Applications In Precision Agriculture, Leila Hassan-Esfahani, Ardeshir M. Ebtehaj, Alfonso F. Torres-Rua, Mac Mckee
Civil and Environmental Engineering Faculty Publications
Applications of satellite-borne observations in precision agriculture (PA) are often limited due to the coarse spatial resolution of satellite imagery. This paper uses high-resolution airborne observations to increase the spatial resolution of satellite data for related applications in PA. A new variational downscaling scheme is presented that uses coincident aerial imagery products from “AggieAir”, an unmanned aerial system, to increase the spatial resolution of Landsat satellite data. This approach is primarily tested for downscaling individual band Landsat images that can be used to derive normalized difference vegetation index (NDVI) and surface soil moisture (SSM). Quantitative and qualitative results demonstrate promising …
Water Resources Adaptation To Climate And Demand Change In The Potomac River, James H. Stagge, Glenn E. Moglen
Water Resources Adaptation To Climate And Demand Change In The Potomac River, James H. Stagge, Glenn E. Moglen
Publications
The effects of climate change are increasingly considered in conjunction with changes in water demand and reservoir sedimentation in forecasts of water supply vulnerability. Here, the relative effects of these factors are evaluated for the Washington, DC metropolitan area water supply for the near (2010 to 2039), intermediate (2040-2069), and distant future (2070 to 2099) by repeated water resources model simulations. This system poses water management challenges due to long water delivery travel times that increase uncertainty, multiple water jurisdictions that constrain potential decisions, and future scenarios that simultaneously increase demand and decrease water supply during the critical summer period. …
Designing And Implementing A Network For Sensing Water Quality And Hydrology Across Mountain To Urban Transitions, Amber Spackman Jones, Zachary T. Aanderud, Jeffery S. Horsburgh, David P. Eiriksson, Dylan Dastrup, Christopher Cox, Scott B. Jones, David R. Bowling, Jonathan Carlisle, Gregory T. Carling, Michelle A. Baker
Designing And Implementing A Network For Sensing Water Quality And Hydrology Across Mountain To Urban Transitions, Amber Spackman Jones, Zachary T. Aanderud, Jeffery S. Horsburgh, David P. Eiriksson, Dylan Dastrup, Christopher Cox, Scott B. Jones, David R. Bowling, Jonathan Carlisle, Gregory T. Carling, Michelle A. Baker
Civil and Environmental Engineering Faculty Publications
Water resources are increasingly impacted by growing human populations, land use, and climate changes, and complex interactions among biophysical processes. In an effort to better understand these factors in semiarid northern Utah, United States, we created a real-time observatory consisting of sensors deployed at aquatic and terrestrial stations to monitor water quality, water inputs, and outputs along mountain to urban gradients. The Gradients Along Mountain to Urban Transitions (GAMUT) monitoring network spans three watersheds with similar climates and streams fed by mountain winter-derived precipitation, but that differ in urbanization level, land use, and biophysical characteristics. The aquatic monitoring stations in …
Thermal Conductance Measurement And Flexibility Enhancement Of Flexible Thermal Links, Matt Felt, Matt Sinfield, Brian Thompson, Matt Munns, K. Lloyd
Thermal Conductance Measurement And Flexibility Enhancement Of Flexible Thermal Links, Matt Felt, Matt Sinfield, Brian Thompson, Matt Munns, K. Lloyd
Space Dynamics Laboratory Publications
Introduction
• Flexible thermal links provide a thermally conductive path with low mechanical stiffness
• Scope of this work is to characterize
– Uncertainty in thermal conductance measurements
– Compliance improvements gained by slitting foils
Collaborative Research: Improving Student Learning In Hydrology & Water Resources Engineering By Enabling The Development, Sharing And Interoperability Of Active Learning Resources, David Tarboton
Funded Research Records
No abstract provided.
Implementing Inexpensive Alternatives To The West’S Largest New Water Project, Utah Rivers Council
Implementing Inexpensive Alternatives To The West’S Largest New Water Project, Utah Rivers Council
All In-stream Flows Material
In 2006, the Utah Rivers Council published our first paper on Bear River Development after completing a comprehensive analysis about the many inexpensive options to provide water for the future of the Wasatch Front. This 2nd edition summarizes new research conducted by Utah Rivers Council staff, colleagues and that of other agencies, which demonstrates that Bear River Development is completely unnecessary for Utah’s future water needs. Although this is good news to Utah taxpayers, it is bad news for the many special interests that seek to profit from billions of dollars in spending for Bear River Water Development and …
Fatigue Crack Detection Using Unmanned Aerial Systems In Under-Bridge Inspection, Sattar Dorafshan, Marc Maguire, Nathan V. Hoffer, Calvin Coopmans
Fatigue Crack Detection Using Unmanned Aerial Systems In Under-Bridge Inspection, Sattar Dorafshan, Marc Maguire, Nathan V. Hoffer, Calvin Coopmans
Civil and Environmental Engineering Faculty Publications
The applications of Unmanned Aerial Systems (UAS) for bridge inspection, with emphasis on under-bridge inspection and fatigue crack detection, were studied in this report. The potential benefits and challenges of using UAS for bridge inspection were identified through an extensive literature survey. The feasibility of using UAS for fatigue crack detection was studied by determining the minimum lighting, camera distance and environmental requirements for three UAS. The DJI Mavic UAS performed better than the others in both indoor and outdoor GPS-denied inspections. An in-service bridge in Ashton, Idaho was inspected using this UAS to find fatigue cracks. No fatigue crack, …
Mapping Annual Riparian Water Use Based On The Single-Satellite-Scene Approach, Kul Khand, Saleh Taghvaeian, Leila Hassan-Esfahani
Mapping Annual Riparian Water Use Based On The Single-Satellite-Scene Approach, Kul Khand, Saleh Taghvaeian, Leila Hassan-Esfahani
Civil and Environmental Engineering Faculty Publications
The accurate estimation of water use by groundwater-dependent riparian vegetation is of great importance to sustainable water resource management in arid/semi-arid regions. Remote sensing methods can be effective in this regard, as they capture the inherent spatial variability in riparian ecosystems. The single-satellite-scene (SSS) method uses a derivation of the Normalized Difference Vegetation Index (NDVI) from a single space-borne image during the peak growing season and minimal ground-based meteorological data to estimate the annual riparian water use on a distributed basis. This method was applied to a riparian ecosystem dominated by tamarisk along a section of the lower Colorado River …
Three-Dimensional Printing Of "Green" Fuels For Low-Cost Small Spacecraft Propulsion Systems, Stephen A. Whitmore
Three-Dimensional Printing Of "Green" Fuels For Low-Cost Small Spacecraft Propulsion Systems, Stephen A. Whitmore
Mechanical and Aerospace Engineering Faculty Publications
This paper details the advantages of employing modern additive manufacturing methods to fabricate hybrid rocket fuels for intrinsically safe and green small spacecraft propulsion systems. Using additive manufacturing overcomes multiple issues frequently associated with hybrid propulsion, including poor volumetric efficiency, system ignitability, and low fuel regression rates. When certain three-dimensionally printed thermoplastics are subjected to a high-voltage low-wattage charge, electrostatic arcing along the surface pyrolizes a small amount of material that, with the introduction of an oxidizer, “seeds” combustion and produces immediate and reliable ignition. Thermoplastic fuel grains can be printed with port shapes that enhance burn properties and increase …
Robust An-Aided Beamforming Design For Secure Miso Cognitive Radio Based On A Practical Nonlinear Eh Model, Yangchao Huang, Zan Li, Fuhui Zhou, Rui Zhu
Robust An-Aided Beamforming Design For Secure Miso Cognitive Radio Based On A Practical Nonlinear Eh Model, Yangchao Huang, Zan Li, Fuhui Zhou, Rui Zhu
Electrical and Computer Engineering Faculty Publications
Energy harvesting techniques are promising in next generation wireless communication systems. However, most of the existing works are based on an ideal linear energy harvesting model. In this paper, a multiple-input single-output cognitive radio network is studies under a practical non-linear energy harvesting model. In order to improve the security of both the primary network and the secondary network, a cooperative jamming scheme is proposed. A robust artificial noise aided beamforming design problem is formulated under the bounded channel state information error model. The formulated problem is non-convex and challenging to be solved. Using S-procedure and the semidefinite relaxation method, …
Physical Disruption Of Cell-Cell Contact Induces Vegf Expression In Rpe Cells, Fahrad Farjood, Elizabeth Vargis
Physical Disruption Of Cell-Cell Contact Induces Vegf Expression In Rpe Cells, Fahrad Farjood, Elizabeth Vargis
Biological Engineering Faculty Publications
PURPOSE: To investigate the role of RPE cell-cell contact in vascular endothelial growth factor (VEGF) protein expression in cultures of primary human RPE (hRPE) cells and a human RPE cell line (ARPE-19). METHODS: Two in vitro methods, scratching and micropatterning, were used to control the physical dissociation of RPE cell-cell junctions. Scratching was performed by scoring monolayers of RPE cells with a cell scraper. Micropatterning was achieved by using a stencil patterning method. Extracellular VEGF expression was assessed by using an enzyme-linked immunosorbent assay (ELISA) kit. Immunocytochemistry (ICC) was performed to visualize the expression and localization of VEGF and intercellular …
Modeling De Novo Granulation Of Anaerobic Sludge, Anna Doloman, Honey Varghese, Charles D. Miller, Nicholas Flann
Modeling De Novo Granulation Of Anaerobic Sludge, Anna Doloman, Honey Varghese, Charles D. Miller, Nicholas Flann
Computer Science Faculty and Staff Publications
Background: A unique combination of mechanical, physiochemical and biological forces influences granulation during processes of anaerobic digestion. Understanding this process requires a systems biology approach due to the need to consider not just single-cell metabolic processes, but also the multicellular organization and development of the granule.
Results: In this computational experiment, we address the role that physiochemical and biological processes play in granulation and provide a literature-validated working model of anaerobic granule de novo formation. The agent-based model developed in a cDynoMiCs simulation environment successfully demonstrated a de novo granulation in a glucose fed system, with the average specific methanogenic …
Iconoclast: Tackling Voltage Noise In The Noc Power Supply Through Flow-Control And Routing Algorithms, Prabal Basu, Rajesh Jayashankarashridevi, Koushik Chakraborty, Sanghamitra Roy
Iconoclast: Tackling Voltage Noise In The Noc Power Supply Through Flow-Control And Routing Algorithms, Prabal Basu, Rajesh Jayashankarashridevi, Koushik Chakraborty, Sanghamitra Roy
Electrical and Computer Engineering Faculty Publications
Power supply noise (PSN) is a growing concern in modern multiprocessor system-on-chips (MPSoCs). The advent of new architectures, such as the network-on-chip (NoC), the standard for on-chip communication in MPSoCs, has given rise to new challenges in maintaining reliable and energy-efficient operation. The growing NoC power footprint, increase in the transistor current, and high switching speed of the logic devices exacerbate the peak PSN in the NoC power delivery network (PDN). Hence, preserving power supply integrity in the NoC PDN is critical. In this paper, we propose IcoNoClast, a collection of a novel flow-control protocol (PAF) and an adaptive routing …