Faculty Works, Charles E. Via Jr. Department of Civil and Environmental Engineering

Precipitation Estimation Methods in Continuous, Distributed Urban Hydrologic Modeling

Woodson, David; Adams, Thomas E.; Dymond, Randel L. (MDPI, 2019-06-28)

Quantitative precipitation estimation (QPE) remains a key area of uncertainty in hydrological modeling and prediction, particularly in small, urban watersheds, which respond rapidly to precipitation and can experience ...

Single-Cell Analysis Reveals that Chronic Silver Nanoparticle Exposure Induces Cell Division Defects in Human Epithelial Cells

Garcia, Ellen B.; Alms, Cynthia; Hinman, Albert W.; Kelly, Conor; Smith, Adam; Vance, Marina; Loncarek, Jadranka; Marr, Linsey C.; Cimini, Daniela (MDPI, 2019-06-11)

Multiple organizations have urged a paradigm shift from traditional, whole animal, chemical safety testing to alternative methods. Although these forward-looking methods exist for risk assessment and predication, animal ...

NanoARG: a web service for detecting and contextualizing antimicrobial resistance genes from nanopore-derived metagenomes

Arango-Argoty, G. A; Dai, D.; Pruden, A.; Vikesland, Peter J.; Heath, L. S; Zhang, L. (2019-06-07)

Abstract Background Direct and indirect selection pressures imposed by antibiotics and co-selective agents and horizontal gene transfer are fundamental drivers of the ...

Remote collection of microorganisms at two depths in a freshwater lake using an unmanned surface vehicle (USV)

Powers, Craig; Hanlon, Regina; Schmale, David G. III (PeerJ, 2018-01-26)

Microorganisms are ubiquitous in freshwater aquatic environments, but little is known about their abundance, diversity, and transport. We designed and deployed a remote-operated water-sampling system onboard an unmanned ...

A Novel Decentralized Game-Theoretic Adaptive Traffic Signal Controller: Large-Scale Testing

Abdelghaffar, Hossam M.; Rakha, Hesham A. (MDPI, 2019-05-17)

This paper presents a novel de-centralized flexible phasing scheme, cycle-free, adaptive traffic signal controller using a Nash bargaining game-theoretic framework. The Nash bargaining algorithm optimizes the traffic signal ...

Intercomparison of Small Unmanned Aircraft System (sUAS) Measurements for Atmospheric Science during the LAPSE-RATE Campaign

Barbieri, Lindsay; Kral, Stephan T.; Bailey, Sean C. C.; Frazier, Amy E.; Jacob, Jamey D.; Reuder, Joachim; Brus, David; Chilson, Phillip B.; Crick, Christopher; Detweiler, Carrick; Doddi, Abhiram; Elston, Jack; Foroutan, Hosein; González-Rocha, Javier; Greene, Brian R.; Guzman, Marcelo I.; Houston, Adam L.; Islam, Ashraful; Kemppinen, Osku; Lawrence, Dale; Pillar-Little, Elizabeth A.; Ross, Shane D.; Sama, Michael P.; Schmale, David G.; Schuyler, Travis J.; Shankar, Ajay; Smith, Suzanne W.; Waugh, Sean; Dixon, Cory; Borenstein, Steve; de Boer, Gijs (MDPI, 2019-05-10)

Small unmanned aircraft systems (sUAS) are rapidly transforming atmospheric research. With the advancement of the development and application of these systems, improving knowledge of best practices for accurate measurement ...

Effect of flexural and shear stresses simultaneously for optimized design of butterfly-shaped dampers: Computational study

Farzampour, Alireza; Eatherton, Matthew R.; Mansouri, Iman; Hu, Jong Wan (Techno-Press, 2019-02)

Structural fuses are made up from oriented steel plates to be used to resist seismic force with shear loading resistance capabilities. The damage and excessive inelastic deformations are concentrated in structural fuses ...

Shape optimization of butterfly-shaped shear links using grey wolf algorithm

Farzampour, Alireza; Khatibinia, Mohsen; Mansouri, Iman (2019-03)

The shear loading applied to structures is resisted by implementation of hysteric dampers as structural seismic force resisting system. Recently, steel plates with engineered cut-outs are introduced to have controlled ...

Incremental Dynamic Analysis for Estimating Seismic Performance of Multi-Story Buildings with Butterfly-Shaped Structural Dampers

Farzampour, Alireza; Mansouri, Iman; Dehghani, Hamzeh (MDPI, 2019-04-08)

Structural strength and stiffness were previously investigated to sufficiently improve the lateral load resistance against major events. Many buildings require appropriate design to effectively withstand the lateral seismic ...

Parametric Computational Study on Butterfly-Shaped Hysteretic Dampers

Farzampour, Alireza; Eatherton, Matthew (2019)

Structural steel plates oriented to resist shear loading can be used as hysteretic dampers in seismic force resisting systems. Some steel plate hysteretic dampers have engineered cut-outs leaving shear links that exhibit ...

Two-phase Monte Carlo simulation for partitioning the effects of epistemic and aleatory uncertainty in TMDL modeling

Mishra, A.; Ahmadisharaf, E.; Benham, B.L.; Gallagher, D.L.; Reckhow, K.H.; Smith, E.P. (American Society of Civil Engineers (ASCE), 2018-10-29)

A two-phase Monte Carlo simulation (TPMCS) uncertainty analysis framework is used to analyze epistemic and aleatory uncertainty associated with simulated exceedances of an in-stream fecal coliform (FC) water quality criterion ...

Compressive Behavior of Concrete under Environmental Effects

Farzampour, Alireza (intechOpen, 2019)

Concrete strength is fairly sensitive to environmental effects. Extreme weather conditions and changes in humidity rates significantly affect the concrete compressive strength development. Concrete as one of the substantial ...

Towards a harmonized method for the global reconnaissance of multi-class antimicrobials and other pharmaceuticals in wastewater and receiving surface waters

Singh, R.R.; Angeles, L.F.; Butryn, D.M.; Metch, J.W.; Garner, E.; Vikesland, Peter J.; Aga, D.S. (Elsevier Ltd, 2019-01-17)

Antimicrobial resistance is a worldwide problem that is both pressing and challenging due to the rate at which it is spreading, and the lack of understanding of the mechanisms that link human, animal and environmental ...

Influences of Interface Properties on the Performance of Fiber-Reinforced Asphalt Binder

Miao, Yinghao; Wang, Ting; Wang, Linbing (MDPI, 2019-03-22)

This paper presents an experimental study about the influence of interfacial properties on the performance of fiber-reinforced asphalt. In this study, four types of fiber including one fiber-reinforced plastic (FRP), two ...

Probabilistic Seismic Demand Analysis of a Bridge with Unbonded, Post-Tensioned, Concrete-Filled, Fiber-Reinforced Polymer Tube Columns

Rai, Manisha; ElGawady, Mohamed A.; Rodriguez-Marek, Adrian (MDPI, 2019-03-18)

Ground motions at sites close to a fault are sometimes affected by forward directivity, where the rupture energy arrives at the site in a form of a very short duration pulse. These pulses impose a heavy demand on structures ...

Citizen Science During the Flint, Michigan Federal Water Emergency: Ethical Dilemmas and Lessons Learned

Roy, Siddhartha; Edwards, Marc A. (Ubiquity Press, 2019-03-08)

A citizen science collaboration between Flint residents, the Virginia Tech “Flint Water Study” team, and others helped to uncover the Flint Lead-in-Drinking Water Crisis and a community-wide outbreak of Legionella. The ...

Shotgun Metagenomics Reveals Taxonomic and Functional Shifts in Hot Water Microbiome Due to Temperature Setting and Stagnation

Dai, Dongjuan; Rhoads, William J.; Edwards, Marc A.; Pruden, Amy (Frontiers, 2018-11-13)

Hot water premise plumbing has emerged as a critical nexus of energy, water, and public health. The composition of hot water microbiomes is of special interest given daily human exposure to resident flora, especially ...