Digital Commons Network^™

Hand-Fabricated Cnt/Agnps Electrodes Using Wax-On-Plastic Platforms For Electro-Immunosensing Application, Sensen Chen, Ahmad Qamar, Narges Asefifeyzabadi, Madison Funneman, Motahareh Taki, Lee Elliott, Mary Kinsel, Gary R. Kinsel, Mohtashim Shamsi

Publications

Fabrication of inexpensive and flexible electronic and electrochemical sensors is in high demand for a wide range of biochemical and biomedical applications. We explore hand fabrication of CNT modified AgNPs electrodes using wax-on-plastic platforms and their application in electrochemical immunosensing. Wax patterns were printed on polyethylene terephthalate-based substrates to laydown templates for the electrodes. Hand painting was employed to fabricate a silver conductive layer using AgNPs ink applied in the hydrophilic regions of the substrate surrounded by wax. CNT was drop cast on top of the working electrodes to improve their electrochemical signal. The device layers were characterized by scanning …

Impacts Of Freight Consolidation And Truck Sharing On Freight Mobility, Tieming Liu, Chaoyue Zhao

Publications

The trucking industry is an important sector of the U.S. economy. However, it is quite fragmented, hindering the efficiency of cargo transportation and the ability for small carriers to identify demands to fill full truck loads. The focus of this research is to study models and algorithms in order to aid online freight marketplaces to identify efficient consolidation strategies. To accomplish this aim, a new mixed integer programming model for the pickup and delivery problem has been developed. The model is geared towards identifying effective freight consolidation opportunities. A branch-and-cut algorithm to solve the model was also developed. The model …

Cybersecurity In The Maritime Domain, Gary C. Kessler

Publications

In 2017 and 2018, the maritime industry saw a record number of attempted—and many successful—frauds via email, phishing, or other means. Demonstrated and actual attacks on vessel networks, communication systems, and navigation systems have become practically routine. Port and shipping line networks are increasingly vulnerable to what appears to be increasingly targeted attacks against maritime systems.

Resume Headings, John Lamothe

Publications

This article serves as a guide to creating resume headings.

Cape Elizabeth Culvert And Habitat Assessment Study, Steve Harding, Jake Aman, Matthew Craig, Robert Malley, Maureen O'Meara

Publications

Executive Summary:

In early 2017, Jake Aman, representing the Wells National Estuary Research Reserve (WNERR), met with the Cape Elizabeth Public Works Director and Town Planner to talk about culverts. Jake shared aerial photos of culverts located in the Spurwink Marsh where scouring of adjacent habitat areas was evident. He inquired if the town was considering any culvert replacements, in which case WNERR and The Nature Conservancy might be able to partner with the town to promote a habitat sensitive replacement. The outcome of the meeting was a jointly sponsored assessment of major town culverts, including those located in the …

A Performance Comparison Of Machine Learning Algorithms For Arced Labyrinth Spillways, Fernando Salazar, Brian M. Crookston

Publications

Labyrinth weirs provide an economic option for flow control structures in a variety of applications, including as spillways at dams. The cycles of labyrinth weirs are typically placed in a linear configuration. However, numerous projects place labyrinth cycles along an arc to take advantage of reservoir conditions and dam alignment, and to reduce construction costs such as narrowing the spillway chute. Practitioners must optimize more than 10 geometric variables when developing a head–discharge relationship. This is typically done using the following tools: empirical relationships, numerical modeling, and physical modeling. This study applied a new tool, machine learning, to the analysis …

Exergetic Relationship Between The Thermal Properties Of Direct Contact Membrane Distillation, D. Perdue, L. Chen, L. Schaefer

Publications

Direct contact membrane distillation (DCMD) is a process that has shown promise within the field of desalination due to its less energy intensive methods and widespread applications. DCMD is a thermally driven microfiltration separation process that operates on the principle of vapor–liquid equilibrium conditions where heat and mass transfer occur simultaneously. Fundamentally, DCMD is based on a porous hydrophobic membrane separating the hot solution (feed) from the cold solution (permeate) where desalinated water condenses. The membrane interfacial temperatures determine the vapor pressure difference across the membrane. In this work, a direct simulation Monte Carlo analysis is employed to investigate how …

Efficacy Of The Localized Aviation Mos Program In Ceiling Flight Category Forecasts, Douglas D. Boyd, Thomas A. Guinn

Publications

(1) Background: Flying in instrument meteorological conditions (IMC) carries an elevated risk of fatal outcome for general aviation (GA) pilots. For the typical GA flight, aerodrome-specific forecasts (Terminal Aerodrome Forecast (TAF), Localized Aviation Model Output Statistics Program (LAMP)) assist the airman in pre-determining whether a flight can be safely undertaken. While LAMP forecasts are more prevalent at GA-frequented aerodromes, the Federal Aviation Administration (FAA) recommends that this tool be used as supplementary to the TAF only. Herein, the predictive accuracy of LAMP for ceiling flight categories of visual flight rules (VFR) and instrument flight rules (IFR) was determined. (2) Methods: …

The Science Project Portfolio, Joan Hedman, Brooke A. Whitworth

Publications

The phrase science fair project likely conjures up images of students working independently on smoldering model volcanoes, catapults, and Rube Goldberg contraptions. To create their projects, students and teachers blindly follow a set of seemingly incomprehensible steps, assembling various pieces. This process continues until the due date arrives, when all the pieces are packaged up for the science fair. Teachers are then expected to assess all the projects in a timely manner while somehow continuing to deliver their curriculum. Eventually, the student receives feedback and, often, a semester-making grade. By that time, everyone is exhausted and relieved it’s over.

A Hybrid Experimental‐Computational Modeling Framework For Cardiovascular Device Testing, Ethan Kung, Masoud Farahmand, Akash Gupta

Publications

Significant advances in biomedical science often leverage powerful computational and experimental modeling platforms. We present a framework named physiology simulation coupled experiment (“PSCOPE”) that can capitalize on the strengths of both types of platforms in a single hybrid model. PSCOPE uses an iterative method to couple an in vitro mock circuit to a lumped-parameter numerical simulation of physiology, obtaining closed-loop feedback between the two. We first compared the results of Fontan graft obstruction scenarios modeled using both PSCOPE and an established multiscale computational fluid dynamics method; the normalized root-mean-square error values of important physiologic parameters were between 0.1% and 2.1%, …

Situation-Aware Left-Turning Connected And Automated Vehicle Operation At Signalized Intersections, Sakib Mahmud Khan, Mashrur Chowdhury

Publications

One challenging aspect of the Connected and Automated Vehicle (CAV) operation in mixed traffic is the development of a situation-awareness module for CAVs. While operating on public roads, CAVs need to assess their surroundings, especially the intentions of non-CAVs. Generally, CAVs demonstrate a defensive driving behavior, and CAVs expect other non-autonomous entities on the road will follow the traffic rules or common driving behavior. However, the presence of aggressive human drivers in the surrounding environment, who may not follow traffic rules and behave abruptly, can lead to serious safety consequences. In this paper, we have addressed the CAV and non-CAV …

Fraught With Friction, Brittany Westman, Brooke A. Whitworth

Publications

In this activity, a question is posed to second-grade students and they are asked to make predictions to answer it: “How will different surfaces affect the distance a toy vehicle travels?” Students observe how different surfaces affect the distance traveled by a toy car and are able to amend their predictions. They are then asked to think of reasons why the vehicle was affected the way it was. During this stage of the lesson, students are led to contemplate their understandings of science concepts, and teachers are able to assess changes in student understanding as a result of discussions and …

Action Of Complex Symplectic Matrices On The Siegel Upper Half Space, Keshav R. Acharya, Matt Mcbride

Publications

The Siegel upper half space, Sn, the space of complex symmetric matrices, Z with positive definite imaginary part, is the generalization of the complex upper half plane in higher dimensions. In this paper, we study a generalization of linear fractional transformations, ΦS, where S is a complex symplectic matrix, on the Siegel upper half space. We partially classify the complex symplectic matrices for which ΦS(Z) is well defined. We also consider Sn and Sn as metric spaces and discuss distance properties of the map ΦS from Sn to Sn and Sn respectively.

Addressing Challenges For Mapping Irrigated Fields In Subhumid Temperate Regions By Integrating Remote Sensing And Hydroclimatic Data, Tianfang Xu, Jillian M. Deines, Anthony D. Kendall, Bruno Basso, David W. Hyndman

Publications

High-resolution mapping of irrigated fields is needed to better estimate water and nutrient fluxes in the landscape, food production, and local to regional climate. However, this remains a challenge in humid to subhumid regions, where irrigation has been expanding into what was largely rainfed agriculture due to trends in climate, crop prices, technologies and practices. One such region is southwestern Michigan, USA, where groundwater is the main source of irrigation water for row crops (primarily corn and soybeans). Remote sensing of irrigated areas can be difficult in these regions as rainfed areas have similar characteristics. We present methods to address …

Student Involvement & Leadership Center: Impact Report Spring 2015 To Fall 2018, Erik Dickamore, Amanda M. Hagman, Spencer Bitner, Nathan Laursen, Mitchell Colver

Publications

Leadership and involvement programs are an integral part of the student experience on University campuses. Volunteers and scholars within leadership and involvement serve their peers by providing rewarding events that unify the student body. Volunteers and scholars also benefit through opportunities for personal exploration and growth. Working with SILC allows students to serve and lead in a unique way. This report explored the association between student participation in leadership and involvement programs, and student persistence to the next term at Utah State University. METHODS: Students participation was captured by rosters across all SILC programs. Students who had a record of …

Value Of Certification: The Occupational Safety And Health Professional, Cheryl Marcham

Publications

This presentation provides information about the importance and value of attaining certification to determine health and safety issues in the environment. It also explains the advantages of attaining certification from different organizations, salary-wise. Attaining a certificate gives individuals the standardized knowledge needed to determine if situations/substances are harmful to human well being or the environment.

(Mis)Alignments In Mentorship: Exploring Challenges To Preservice Science Teacher Preparation, Mandy Biggers, Alison Riley Miller, Laura Zangori, Brooke A. Whitworth

Publications

The mentoring relationships between preservice teachers and their cooperating teachers have been established as critical to the retention or attrition of novice teachers (Clarke, Triggs, & Nielsen, 2014), yet little research has been conducted to examine what factors around mentor teacher selection and support are most salient to creating strong mentoring structures. In this study, we investigated how four U.S. states (one in the Southwest, one in the Northeast, one in the Midwest, and one in the South) recruit mentor teachers for secondary science preservice teachers, what requirements the mentor teachers must possess, how mentor teachers are incentivized to serve …

Cosmic Ray Albedo Neutron Decay (Crand) As A Source Of Inner Belt Electrons: Energy Spectrum Study, Kun Zhang, X. Li, H. Zhao, Q. Schiller, L. Khoo, Y. Khoo, Z. Xiang, R. Selesnick, M. A. Temerin, J. A. Sauvaud

Publications

Cosmic Ray Albedo Neutron Decay (CRAND) has been recently confirmed as a source of energetic electrons at the inner edge of the inner belt by the Colorado Student Space Weather Experiment (CSSWE)mission. Here we use observations from the Detection of Electro‐Magnetic Emissions Transmitted from Earthquake Regions (DEMETER) mission, to investigate the CRAND contribution to inner belt electrons quantitatively over a broad energy range (~100–800 keV). Spectral fitting analysis supports the conclusion that CRAND is the most important electron source at the inner edge of the innerbelt. For the first time, we show that CRAND is the dominant source of >250‐keV …

Biological Determinants Of Physical Activity Across The Life Course: A “Determinants Of Diet And Physical Activity” (Dedipac) Umbrella Systematic Literature Review, Katina Aleksovska, Anna Puggina, Luca Giraldi, Christoph Buck, Con Burns, Greet Cardon, Angela Carlin, Simon Chantal, Donatella Ciarapica, Marco Colotto, Giancarlo Condello, Tara Coppinger, Cristina Cortis, Sara D’Haese, Marieke De Craemer, Andrea Di Blasio, Sylvia Hansen, Licia Iacoviello, Johann Issartel, Pascal Izzicupo, Lina Jaeschke, Martina Kanning, Aileen Kennedy, Fiona Ling, Agnes Luzak, Giorgio Napolitano, Julie Anne Nazare, Camille Perchoux, Tobias Pischon, Angela Polito, Alessandra Sannella, Holger Schulz

Publications

Background: Despite the large number of studies and reviews available, the evidence regarding the biological determinants of physical activity (PA) is inconclusive. In this umbrella review, we summarized the current evidence on the biological determinants of PA across the life course, by pooling the results of the available systematic literature reviews (SLRs) and meta-analyses (MAs). Methods: We conducted an online search on MEDLINE, ISI Web of Science, Scopus, and SPORTDiscus databases up to January 2018. SLRs and MAs of observational studies that investigated the association between biological determinants of PA and having PA as outcome were considered eligible. The extracted …

Biotechnological Application In Aquaculture And Its Sustainability Constraints, Olaganathan Rajee, Tang Kar Mun Alicia

Publications

The valuable nutritional and biochemical properties have made fisheries products one of the most vital high-quality protein sources for human consumption. Aquaculture has become the great alternative to substitute wild catches when the yield from fishing are no longer sufficient to sustain the massive food demand of the human population which is constantly burgeoning. However, aquaculture requires multidisciplinary approaches with holistic and environmental-friendly management measures to ensure its long term success and sustainability. Biotechnological applications have enhanced the effectiveness and cost-efficiencies of aquaculture by augmenting the productivity of aquaculture to meet global needs. Despite the benefits, the biotechnological application in …

Thermal Structure Of The Mesopause Region During The Wadis-2 Rocket Campaign, Raimund Wörl, Boris Strelnikov, Timo P. Viehl, Josef Höffner, Pierre-Dominique Pautet, Michael J. Taylor, Yucheng Zhao, Franz-Josef Lübken

Publications

This paper presents simultaneous temperature measurements by three independent instruments during the WADIS-2 rocket campaign in northern Norway (69^◦ N, 14^◦ E) on 5 March 2015. Vertical profiles were measured in situ with the CONE instrument. Continuous mobile IAP Fe lidar (Fe lidar) measurements during a period of 24 h, as well as horizontally resolved temperature maps by the Utah State University (USU) Advanced Mesospheric Temperature Mapper (AMTM) in the mesopause region, are analysed. Vertical and horizontal temperature profiles by all three instruments are in good agreement. A harmonic analysis of the Fe lidar measurements shows the presence …

Reaching For The Future - Building A Professional Trajectory, Julie A. Luft, Brooke A. Whitworth

Publications

Science teachers need to consider how they want to grow professionally. Thinking about one’s future involves identifying the knowledge, practices, and attributes needed in a new role. By using a framework such as the science education trajectory (SET), teachers can more easily consider their professional options and work strategically toward them.

The report on science teacher learning (NASEM 2015) emphasizes that teachers need strategic and coherent learning opportunities. Until there are defined pathways toward different positions, science teachers will need to organize their learning opportunities in such a way that they can learn intentionally and progressively. This is important to …

Modeling And Measuring Students' Computational Thinking Practices In Science, Golnaz Arastoopour Irgens, Sugat Dabolkar, Connor Bain, Philip Woods, Kevin Hall, Hillary Swanson, Michael Horn, Uri Wilensky

Publications

In recent decades, computational tools and methods have become pervasive in mathematical and scientific fields (National Research Council, 2010a). Tools such as mathematical and statistical models have expanded the range of phenomena that are explored and have become necessary for analyzing increasingly large data sets across disciplines (National Academy of Sciences, National Academy of Engineering, & Institute of Medicine, 2007). With these advances, entirely new fields such as computational statistics, neuroinformatics, and chemometrics have emerged. The varied applied uses of computational tools across these fields have shown that future scientists will not only need to know how to program, but …

Heuristics For Communicating Science, Risk, And Crisis, Katherine E. Rowan, Andrew S. Pyle

Publications

Scientific information about physical hazards is important and very easy to miscommunicate. Because science uses complex wording and sophisticated reasoning, many assume that sharing science with lay stakeholders is solely a matter of substituting simple words and sentences for unfamiliar terms and complex syntax. An additional frequent assumption is that ‘giving information’ or ‘educating’ are the only important goals when communicating with stakeholders about health and the environment. Indeed, one study shows that, among scientists who share science online with lay stakeholders, their principal goals when communicating with lay audiences are to ‘educate’ or ‘defend science’. Although these goals are …

Introducing Gaseous Transport Fuel To Ireland: A Strategic Infrastructure Framework, Niamh Power, Daniel Goulding, Dan Fitzpatrick, Rodger O'Connor, James D. Browne

Publications

European Union legislation in the form of the Renewable Energy Directive 2009/28/EC and the Deployment of Alternative Fuels Infrastructure Directive 2014/94/EC have placed mandatory requirements on Member States to deliver sustainable forms of alternative transport infrastructure in order to reduce greenhouse gas emissions in the transport sector. However, there is currently little or no refuelling infrastructure to support the development of an alternative transport fuel market for compressed natural gas and its renewable form biomethane in a number of EU Member States. Primarily focussing on a combination of biomethane and compressed natural gas (bio-CNG), this paper analyses the key considerations …

The Role Of Social Media In Enhancing Risk Communication And Promoting Community Resilience In The Midst Of A Disaster, Kathryn E. Anthony, Steven J. Venette, Andrew S. Pyle, Brandon C. Boatwright, Carrie E. Reif-Stice

Publications

The importance of engendering community resilience after a disaster event cannot be overstated. In this chapter, we argue that the strategic design of risk communication messages is critical for communities affected by crises. In the past, many communication practitioners employed the single shot, top-down approach for constructing messages, especially during crises. Given growing recognition of the ineffectiveness of this model, scholars have become more attentive to the role of message design in conveying risk to stakeholders. Specifically, through the lens of the message convergence framework, we argue the need for a multiple messages approach that targets diverse groups of people …

(Invited) Emerging Role Of Silicon Carbide And Gallium Nitride Based Power Electronics In Power And Transportation Sectors, Prahaladh Paniyil, Rajendra Singh

Publications

Free fuel-based energy sources (solar and wind) are pointing towards a future in which sustainable energy is affordable, abundant and deployed with high energy efficiency. Driven by advancements in the technology of lithium batteries and the availability of low-cost sustainable clean electric power, the electrification of transportation is going through fundamental disruptive transformation. Without any doubt, both power and transportation sectors will provide phenomenal growth of power electronics in the 21st century. Recently, both SiC and GaN are drawing the attention as potential replacement of Si-based power electronics. These may open some new markets where Si based power electronics cannot …

Shear Lag Factors For Tension Angles With Unequal-Length Longitudinal Welds, Jen-Kan Kent Hsiao, Saurav Shrestha

Publications

When a tension load is transmitted to some, but not all of the cross-sectional elements of a tension member, the tensile force is not uniformly distributed over the cross-sectional area of the tension member. The non-uniform stress distribution in the tension member is commonly referred to as the out-of-plane shear lag effect. The unequal-length longitudinal welds and the in-plane shear lag effect, however, are not addressed by the current American Institute of Steel Construction (AISC) Specification for the determination of the shear lag factors for tension members other than plates and Hollow Structural Sections (HSS). The purpose of this work …

An Investigation Of The Magneto-Active Slosh Control For Cylindrical Propellant Tanks Using Floating Membranes, Manikandan Vairamani, Pedro Llanos, Balaji Sivasubramanian, Somnath Nagendra, Kevin Crosby

Publications

The phenomenon of sloshing is a substantial challenge in propellant management, particularly in reduced gravity where surface tension-driven flows result in large slosh amplitudes and relatively long decay time scales. Propellant Management Devices (PMDs) such as the rigid baffles and elastomeric membranes are often employed to counteract motion of the free surface. In the present study, we investigate an active PMD that utilizes a free-floating membrane that, under an applied static magnetic field, becomes rigid and suppresses slosh. This semi-rigid structural layer can thereby replace bulky baffle structures and reduce the overall weight of the tank. In this paper, the …

Evaluation Of Suas Education And Training Tools, Brent Terwilliger, Scott Burgess, James Solti, Kristine Kiernan, Christian Janke, Andrew Shepherd

Publications

The wide distribution and demographic composition of students seeking small unmanned aircraft system (sUAS) education presents a need to fully understand the capabilities, limitations, and dependencies of effective training tools. Concepts, practices, and technologies associated with modeling and simulation, immersive gaming, augmented and mixed-reality, and remote operation have demonstrated efficacy to support engaged student learning and objective satisfaction. Identification and comparison of key attributes critical to an aviation educational framework, such as competency-based training, enables educational designers to identify those tools with the highest potential to support successful learning. A series of factors, such as system performance, regulatory compliance, environmental …