Engineering Commons^™

Cost Effectiveness Of Energy Efficiency And On-Site Photovoltaic Power For 2015 International Energy Conservation Code Eri (Energy Rating Index) Compliance, Florida Solar Energy Center, Philip W. Fairey

FSEC Energy Research Center®

EnergyGauge® USA v.5.1 is used to simulate the energy use of one-story, three bedroom, 2000 ft², single-family, frame homes in sixteen representative U.S. climates comprising all eight IECC climate zones. The energy use of the Section R406.2 minimum efficiency home (the Baseline Home) is compared against the energy use of homes complying with the prescriptive requirements of Section R402 of the 2015 IECC and against homes complying with the Section R406 Energy Rating Index (ERI) Compliance Alternative. The improvement cost and energy savings of the improved homes relative to the Baseline Home are then used to determine the cost effectiveness …

Phonon Interference In Crystalline And Amorphous Confined Nanoscopic Films, Zhi Liang, Thomas E. Wilson, Pawel Keblinski

Mechanical and Aerospace Engineering Faculty Research & Creative Works

Using Molecular Dynamics Phonon Wave Packet Simulations, We Study Phonon Transmission Across Hexagonal (H)-BN and Amorphous Silica (A-SiO₂) Nanoscopic Thin Films Sandwiched by Two Crystalline Leads. Due to the Phonon Interference Effect, the Frequency-Dependent Phonon Transmission Coefficient in the Case of the Crystalline Film (Si|h-BN|Al Heterostructure) Exhibits a Strongly Oscillatory Behavior. in the Case of the Amorphous Film (Si|a-SiO₂|Al and Si|a-SiO₂|Si Heterostructures), in Spite of Structural Disorder, the Phonon Transmission Coefficient Also Exhibits Oscillatory Behavior at Low Frequencies (Up to ∼1.2 THz), with a Period of Oscillation Consistent with the Prediction from the Two-Beam …

Webinar: Integrating Explicit And Implicit Methods In Travel Behavior Research: A Study Of Driver Attitudes And Bias, Tara Goddard

TREC Webinar Series

Car crashes are still a leading cause of death in the United States, with vulnerable road users like bicyclists and pedestrians being injured or killed at rates that outpace their mode share.

Planners, engineers, and advocates are increasingly adopting Vision Zero and Tactical Urbanism approaches and trying to better understand the underlying causes of dangerous roadway interactions. However, existing research into crash causation has focused on instrumental factors (e.g. intersection type, vehicle speed) while little research has probed the role of attitudes or socio-cognitive mechanisms in interactions between roadway users.

Social psychology suggests that attitudes and social cognitions can play …

Side Information In Coded Aperture Compressive Spectral Imaging, Laura Galvis, Henry Arguello, Daniel L. Lau, Gonzalo R. Arce

Electrical and Computer Engineering Faculty Publications

Coded aperture compressive spectral imagers sense a three-dimensional cube by using two-dimensional projections of the coded and spectrally dispersed source. These imagers systems often rely on FPA detectors, SLMs, micromirror devices (DMDs), and dispersive elements. The use of the DMDs to implement the coded apertures facilitates the capture of multiple projections, each admitting a different coded aperture pattern. The DMD allows not only to collect the sufficient number of measurements for spectrally rich scenes or very detailed spatial scenes but to design the spatial structure of the coded apertures to maximize the information content on the compressive measurements. Although sparsity …

College Of Engineering News, Georgia Southern University

College of Engineering & Computing: News & Publications (2010-2023)

• Adel El Shahat publishes book on Nano-grids

On The Development Of A One-Time Pad Generator For Personalising Cloud Security, Paul Tobin, Lee Tobin, Michael Mckeever, Jonathan Blackledge

Conference papers

Cloud computing security issues are being reported in newspapers, television, and on the Internet, on a daily basis. Furthermore, in 2013, Edward Snowden alleged backdoors were placed in a number of encryption systems by the National Security Agency causing confidence in public encryption to drop even further. Our solution allows the end-user to add a layer of unbreakable security by encrypting the data locally with a random number generator prior to uploading data to the Cloud. The prototype one-time pad generator is impervious to cryptanalysis because it generates unbreakable random binary sequences from chaos sources initiated from a natural noise. …

Lowest Matric Potential In Quartz: Metadynamics Evidence, Chao Zhang, Yi Dong, Zhen Liu

Department of Civil, Environmental, and Geospatial Engineering Publications

The lowest matric potential is an important soil property characterizing the strength of retaining water molecules and a key parameter in defining a complete soil water retention curve. However, the exact value of the lowest matric potential is still unclear and cannot be measured due to the limitation of current experimental technology. In this study, a general theoretical framework based on metadynamics was proposed to determine the lowest matric potential in quartz minerals. The matric potential was derived from partial volume free energy and can be further calculated by the difference between the adsorption free energy and self‐hydration free energy. …

Influence Of The Method And Timing Of The Land Application Of Manure On The Fate And Transport Of Manure Constituents In Soil, Xu Li

Department of Civil and Environmental Engineering: Faculty Publications

Swine manure has been used as a soil amendment for crop production because it can provide nutrients, increase soil productivity, improve water infiltration, and reduce the potential for soil erosion. It is important to understand how different land application strategies may affect the fate and transport of various manure constituents in the environment. The objective of this project was to determine how the method and timing of swine manure application may impact the levels of multiple manure constituents in soil. The manure constituents included nutrients, antimicrobials, and antimicrobial resistance genes (AMR genes).

A series of plot-scale field experiments were performed. …

Laser Shock Wave Assisted Patterning On Niti Shape Memory Alloy Surfaces, Dovletgeldi Seyitliyev, Peizhen Li, Khomidkhodza Kholikov, Byron Grant, Haluk E. Karaca, Ali O. Er

Mechanical Engineering Faculty Publications

An advanced direct imprinting method with low cost, quick, and less environmental impact to create thermally controllable surface pattern using the laser pulses is reported. Patterned micro indents were generated on Ni₅₀Ti₅₀ shape memory alloys (SMA) using an Nd:YAG laser operating at 1064 nm combined with suitable transparent overlay, a sacrificial layer of graphite, and copper grid. Laser pulses at different energy densities which generates pressure pulses up to 10 GPa on the surface was focused through the confinement medium, ablating the copper grid to create plasma and transferring the grid pattern onto the NiTi surface. Scanning …

Recoverable Stress Induced Two-Way Shape Memory Effect On Niti Surface Using Laser-Produced Shock Wave, Dovletgeldi Seyitliyev, Peizhen Li, Khomidkhodza Kholikov, Byron Grant, Zachary Thomas, Orhan Alal, Haluk E. Karaca, Ali O. Er

Mechanical Engineering Faculty Publications

The surfaces of Ni50Ti50 shape memory alloys (SMAs) were patterned by laser scribing. This method is more simplistic and efficient than traditional indentation techniques, and has also shown to be an effective method in patterning these materials. Different laser energy densities ranging from 5 mJ/pulse to 56 mJ/pulse were used to observe recovery on SMA surface. The temperature dependent heat profiles of the NiTi surfaces after laser scribing at 56 mJ/pulse show the partially-recovered indents, which indicate a "shape memory effect (SME)" Experimental data is in good agreement with theoretical simulation of laser induced shock wave propagation inside NiTi SMAs. …

Danger Below: Socal’S Dams Face Same Risks As Oroville, Char Miller, Frank Connor Lyles '17

Pomona Faculty Publications and Research

No abstract provided.

Directed Acyclic Graph Continuous Max-Flow Image Segmentation For Unconstrained Label Orderings, John Sh Baxter, Martin Rajchl, A. Jonathan Mcleod, Jing Yuan, Terry M. Peters

Robarts Imaging Publications

Label ordering, the specification of subset–superset relationships for segmentation labels, has been of increasing interest in image segmentation as they allow for complex regions to be represented as a collection of simple parts. Recent advances in continuous max-flow segmentation have widely expanded the possible label orderings from binary background/foreground problems to extendable frameworks in which the label ordering can be specified. This article presents Directed Acyclic Graph Max-Flow image segmentation which is flexible enough to incorporate any label ordering without constraints. This framework uses augmented Lagrangian multipliers and primal–dual optimization to develop a highly parallelized solver implemented using GPGPU. This …

Effect Of Sky Conditions On Light Transmission Through A Suspended Particle Device Switchable Glazing, Aritra Ghosh, Brian Norton, Aidan Duffy

Articles

A suspended particle device (SPD) switchable glazing changes its state from opaque to transparent in the presence of a power supply. SPD glazing's near normal transmission varies with incident angle and clearness index. Due to a lower diffuse component, higher glazing transmission ensues at higher clearness indices. Transmittance values for different azimuthal incident angle for a SPD glazing for its “transparent” and “opaque” states have been determined. In Dublin, below 0.5 clearness index, isotropic diffuse transmittance was prevailed while transmission of direct insolation was dominant above 0.5 clearness index. For south facing vertical plane SPD glazing transmittance in its transparent …

Using Fuzzy Cognitive Maps To Model Policy Issues In The Face Of Uncertainty And Limited Data, Brian Gregor

PSU Transportation Seminars

Planners and policymakers are often faced with the need to make decisions about issues for which there is uncertainty and limited data. For example, transportation planners are now faced with the prospect that new transportation technologies such as autonomous vehicles could greatly alter future transportation system needs. Decisions about these types of issues are difficult to reason about and consequently are likely to be ignored or made on the basis of simplistic logic. Although modeling could be helpful, especially for issues involving complex systems, it is rarely used because models usually require large amounts of data and and handle uncertainty …

Utah Water Research Lab Unveils Latest In Unmanned Aerial Vehicles | College Of Engineering, Usu College Of Engineering

College of Engineering News

Researchers at Utah State University last week unveiled their newest platform of unmanned aerial vehicles.

Single Molecule-Level Study Of Donor-Acceptor Interactions And Nanoscale Environment In Blends, Nicole Quist, Rebecca Grollman, Jeremy Rath, Alex Robertson, Michael Haley, John E. Anthony, Oksana Ostroverkhova

Chemistry Faculty Publications

Organic semiconductors have attracted considerable attention due to their applications in low-cost (opto)electronic devices. The most successful organic materials for applications that rely on charge carrier generation, such as solar cells, utilize blends of several types of molecules. In blends, the local environment strongly influences exciton and charge carrier dynamics. However, relationship between nanoscale features and photophysics is difficult to establish due to the lack of necessary spatial resolution. We use functionalized fluorinated pentacene (Pn) molecule as single molecule probes of intermolecular interactions and of the nanoscale environment in blends containing donor and acceptor molecules. Single Pn donor (D) molecules …

Surrogate Modeling Of Ultrasonic Simulations Using Data-Driven Methods, Xiaosong Du, Robert Grandin, Leifur Leifsson

Mechanical and Aerospace Engineering Faculty Research & Creative Works

Ultrasonic testing (UT) is used to detect internal flaws in materials and to characterize material properties. In many applications, computational simulations are an important part of the inspection-design and analysis processes. Having fast surrogate models for UT simulations is key for enabling efficient inverse analysis and model-assisted probability of detection (MAPOD). In many cases, it is impractical to perform the aforementioned tasks in a timely manner using current simulation models directly. Fast surrogate models can make these processes computationally tractable. This paper presents investigations of using surrogate modeling techniques to create fast approximate models of UT simulator responses. In particular, …

Analysis Of A Magnetically Geared Lead Screw, Mojtaba Bahrami Kouhshahi, Jonathan Bird

Electrical and Computer Engineering Faculty Publications and Presentations

Linear magnetic gearboxes (LMG) and magnetic lead screws (MLS) have been shown to be capable of operating at significantly higher volumetric force densities than traditional electromagnetic linear actuators (ELA). However in both such devices the linear translator must be made of magnet material and therefore if the stroke length of the translator is long the cost of the MLS and LMG will become prohibitively high. In this paper a magnetically geared lead screw (MGLS) is investigated and its performance capability is compared with the LMG and MLS. The advantage of the MGLS is that the translator does not contain magnets.

In-House Fabrication Of Temperature Sensitive Paint For Turbine Cooling Research, Mayur D. Patel, Mark A. Ricklick

Beyond: Undergraduate Research Journal

The Temperature Sensitive Paint (TSP) is a widely used method in measuring and visualizing flow separation and heat transfer. Compared to the cost and time consumption needed for methods such as pitot tubes, temperature sensitive paint is a cheaper alternative. Due to high usage in College of Engineering research projects, it was determined that in house fabrication of temperature sensitive paint would reduce time and cost limitations. For initial stages, literature research was performed to determine the recipe of intensity based TSP with luminophore and polymer binder that operated optimum at temperatures from 0-100°C. Europium III thenoyltrifluoroacetonate was determined to …

Lake Michigan Wind Assessment Analysis, 2012 And 2013, Charles R. Standridge Ph.D., David Zeitler, Aaron Clark, Tyson Spoelma, Erik E. Nordman, T. Arnold Boezaart, Jim Edmonson, Graham Howe, Guy Meadows, Aline Cotel, Frank Marsik

Peer Reviewed Articles

A study was conducted to address the wind energy potential over Lake Michigan to support a commercial wind farm. Lake Michigan is an inland sea in the upper mid-western United States. A laser wind sensor mounted on a floating platform was located at the mid-lake plateau in 2012 and about 10.5 kilometers from the eastern shoreline near Muskegon Michigan in 2013. Range gate heights for the laser wind sensor were centered at 75, 90, 105, 125, 150, and 175 meters. Wind speed and direction were measured once each second and aggregated into 10 minute averages. The two sample t-test and …

Biological Engineering Professor Presents Inaugural Lecture | College Of Engineering, Usu College Of Engineering

College of Engineering News

Biological Engineering faculty Dr. Anhong Zhou reflected on family and the future of bio-technologies at his inaugural lecture last month where he was honored for his promotion to professor.

Synthesis Of Novel, Highly Bio-Based Monomeric Materials Derived From Lignocellulosic Biomass And Their Respective Epoxy Resins, Polycarbonates, And Polyesters, Joseph Randall Mauck

Theses and Dissertations

The development of high performance polymers from renewable feedstocks is a crucial step toward a global economy that is less dependent on fossil resources and has been a field of increasing study. The development of novel and interesting bio-based monomers, resins, and functional building blocks is critical to the improvement of polymers produced across the field, as well as to increasing the resource base from which chemical and materials engineers can draw to meet specific polymer property requirements. To this end, interesting tri-functional (trisguaiacol) and 4-vinyl guaiacol based hetero-difunctional monomers were developed and screened for preliminary polymer properties. The applications …

Utah State University’S Cee Department Gets Attention From Industry Magazines | College Of Engineering, Usu College Of Engineering

College of Engineering News

Utah State University’s Department of Civil and Environmental Engineering was mentioned several times recently in the United States Society on Dams (USSD) Newsletter and the Association of State Dam Safety Officials (ASDSO) Annual Report.

A Modification Of Ensemble Empirical Mode Decomposition Method, Chu-Kuan Lin, Wei-Po Huang, Grzegorz Różyński, Jaw-Guei Lin

Journal of Marine Science and Technology–Taiwan

An adjustment about the added white noise in Ensemble Empirical Mode Decomposition (EEMD) of Wu and Huang (2008) was presented in this paper. The EEMD establishes an ensemble by adding time series of finite but not infinitesimal amplitude white noise into a time series of the signal to solve the mode-mixing problem occurred in the conventional EMD method. The adding ensembles of noise are supposed to be exhausted from all possible solutions from the sifting process. However, in the Matlab script of the theory, it was found that the added noise could not be averaged out through the whole process. …

Intelligent Detection Of Serial Arc Fault On Low Voltage Power Lines, Chi-Jui Wu, Yu-Wei Liu, Chen-Shung Hung

Journal of Marine Science and Technology–Taiwan

Some reports reveal that a number of home fires are caused by electric arc faults on low voltage electric power lines. The arc fault circuit interrupter (AFCI) is a device to detect arc faults. However, the accurate rate of detection by commercial AFCIs is still imperfect. In this paper, an intelligent method is intended to improve the detection ability. A wavelet based stationary non-stationary filter (WTST-NST) is employed to eliminate the impulse components of measurement data. Then, the discrete wavelet transform (DWT) and the multi-resolution are used to obtain the signal energy in the corresponding frequency band. A back propagation …

Application Of Morlet Wavelet In The Diagnosis Of Noise Signal Characteristics Of A Wind Turbine Blade In Abnormal Operation, Chao-Nan Wang, Yao-Chi Tang

Journal of Marine Science and Technology–Taiwan

This study developed an estimation model for noise signal characteristic diagnosis based on the time-frequency analysis technique. The time-frequency analysis theory uses the relatively mature and extensively used wavelet method as the basis of signal analysis, but wavelet analysis generates wavelet theories different from other mother wavelet methods. This study used the Morlet Transform, which is a type of wavelet transform using a mother wavelet for wavelet analysis of signals. The time axis was integrated according to the result of time-frequency analysis in order to obtain the marginal spectrum value of the frequency domain. Finally, statistical regression analysis was used …

Multi-Resolution Codebook And Adaptive Beamforming Sequence Design For Millimeter Wave Beam Alignment, Song Noh, Michael D. Zoltowski, David J. Love

Department of Electrical and Computer Engineering Technical Reports

Millimeter wave (mmWave) communication is expected to be widely deployed in fifth generation (5G) wireless networks due to the substantial bandwidth available at mmWave frequencies. To overcome the higher path loss observed at mmWave bands, most prior work focused on the design of directional beamforming using analog and/or hybrid beamforming techniques in largescale multiple-input multiple-output (MIMO) systems. Obtaining potential gains from highly directional beamforming in practical systems hinges on sufficient levels of channel estimation accuracy, where the problem of channel estimation becomes more challenging due to the substantial training overhead needed to sound all directions using a high-resolution narrow beam. …

Exploration Method Improvements Of Autonomous Robot For A 2-D Environment Navigation, Nien-Yu Chen, Jinsiang Shaw, Hsien-I Lin

Journal of Marine Science and Technology–Taiwan

This paper presents a method for integrating different algorithms for building an autonomous robot. The developed robot has the ability to construct the 2-D map of an unknown environment, localize itself in the map, explore undiscovered area, and path finding. In order to efficiently explore a map, we propose an exploration method. Additionally, improvements of conventional A* algorithm are proposed. Experimental results show that the developed robot is capable of navigating an unknown indoor environment with random obstacles.

A Parametric Study Of An Implementing Adaptive Time Reversal Mirror As A Crosstalk Mechanism For Underwater Communication, Yi-Wei Lin, Gee-Pinn Too

Journal of Marine Science and Technology–Taiwan

The time reversal mirror technique has been widely applied to mitigate the inter-symbol interference in underwater channels. Meanwhile, an adaptive time reversal mirror is introduced to improve the crosstalk quality between receivers in underwater acoustic communication (UAC). However, array configuration affects the performance of this mechanism. To explore the effectiveness of this method, this study extended the analysis of adaptive time reversal mirror as a crosstalk mechanism and explored the mechanism in an experiment using a towing tank as a testing platform. The advantage of this process is its simplicity in examining the effects of the array configuration of this …

A Study On The Integrated Design Of Engine Room Ventilation, Wen-Kong Horng, Heiu-Jou Shaw

Journal of Marine Science and Technology–Taiwan

This paper presents a ventilation system design process that integrates the key plan and working plan design phases using evolving 3D models to reduce the required number of design manhours. The process is called the Routing-Expanding-Predicting Ventilation (REPV) process. First, the routes of a ventilation system are determined based on a 3D model of the ship engine room, and the dimensions of the rectangular ventilation ducts are expanded to maintain a range of air velocities using the Duct Route Arrangement program (DRAP) in the key design phase. Finally, after the routes of the ventilation models are revised in the working …