Engineering Commons^™

An Integrated Modeling System For Estimating Glacier And Snow Melt Driven Streamflow From Remote Sensing And Earth System Data Products In The Himalayas, M. E. Brown, A. E. Racoviteanu, David G. Tarboton, A. Sen Gupta, J. Nigro, F. Policelli, S. Habib, M. Tokay, M. S. Shrestha, S. Bajracharya, P. Hummel, M. Gray, P. Duda, B. Zaitchik, Vinod Mahat, G. Artan, S. Tokar

Civil and Environmental Engineering Faculty Publications

Quantification of the contribution of the hydrologic components (snow, ice and rain) to river discharge in the Hindu Kush Himalayan (HKH) region is important for decision-making in water sensitive sectors, and for water resources management and flood risk reduction. In this area, access to and monitoring of the glaciers and their melt outflow is challenging due to difficult access, thus modeling based on remote sensing offers the potential for providing information to improve water resources management and decision making. This paper describes an integrated modeling system developed using downscaled NASA satellite based and earth system data products coupled with in-situ …

Using Graph Visualization To Look At The Trajectories Of Events That Lead To Readmission, Abbas Shojaee, Isuru Ranasinghe, Sudhakar Nuti, Shu-Xia Li, Harlan Krumholz

Yale Day of Data

Information on specific sequence of healthcare utilization events in heart failure patients may be useful for identifying distinct subpopulations of patients with HF. Knowledge of patient trajectories may help to improve prediction of future readmission which can be used to tailor management to the individual needs of the patient.

This research introduces a new approach to mining administrative and clinical datasets by incorporating graph networks to identify & visualize the trajectories of sequences of events.

Ieee Members Win Department Design Competition | Electrical And Computer Engineering | College Of Engineering, Usu College Of Engineering

College of Engineering News

IEEE USU Student Branch members recently won the USU Electrical and Computer Engineering Department award for Outstanding Senior Design Project. The Autonomous Shopping Cart (ASC) stole the show despite stiff competition.

Carboxymethylcellulose Hydrogels Support Central Nervous System-Derived Tumor-Cell Chemotactic Migration: Comparison With Conventional Extracellular Matrix Macromolecules, Tanya Singh, Chandrasekhar Kothapalli, Devika Varma, Steven B. Nicoll, Maribel Vazquez

Publications and Research

The local microenvironment plays an important role in maintaining the dynamics of the extracellular matrix and the cell-extracellular matrix relationship. The extracellular matrix is a complex network of macromolecules with distinct mechanical and biochemical characteristics. Disruptions in extracellular matrix homeostasis are associated with the onset of cancer. The extracellular matrix becomes highly disorganized, and the cell-matrix relationship changes, resulting in altered cell-signaling processes and metastasis. Medulloblastoma is one of the most common malignant pediatric brain tumors in the United States. In order to gain a better understanding of the interplay between cell-extracellular matrix interactions and cell-migratory responses in tumors, eight …

Automating Deployment Of Several Gbrowse Instances, Neil Moore, Jerzy W. Jaromczyk, Christopher L. Schardl, Joedocei Hill, Devin Wright

Computer Science Presentations

Background

As part of the fungal endophyte genomes project, we maintain genome browsers for several dozen strains of fungi from the Clavicipitaceae and related families. These genome browsers are based on the GBrowse software, with a large collection of in-house software for visualization, analysis, and searching of genome features.

Although GBrowse supports serving multiple data sources, such as distinct genome assemblies, from a single GBrowse instance, there are advantages to maintaining separate instances for each genome. Besides permitting per-genome customizations of the software, page layout, and database schemas, our use of separate instances also allows us to maintain different security …

Control Of The Diffracted Response Of A Metallic Wire Array With Double Period: Experimental Demonstration, Nicholas A. Roberts, D. C. Skigin, J. D. Fowlkes, L. B. Scaffardi, D. C. Schinca, M. Lester

Mechanical and Aerospace Engineering Faculty Publications

In recent papers, it has been theoretically shown that by using dual-period wire gratings, it is possible to control the relative efficiencies of the diffracted orders, regardless of the wires’ material, incident polarization and wavelength. In this Letter, we experimentally demonstrate, for the first time, that by appropriately choosing the geometrical parameters of a nanometric periodic structure, it is possible to control the optical response in the visible range. We show examples of nanostructures designed to cancel out or to intensify a particular diffraction order. Such nanostructures allow a broad control over the directionality and the intensity of the diffracted …

Measuring And Modeling The Effects Of Energy Efficiency And Renewable Energy On Microgrid Operational Performance And Community Welfare In Haiti, Daniel Andrew Krest Schnitzer

Link Foundation Energy Fellowship Reports

While central grid extension often provides electricity at very low cost, the reliability of the central grid in less developed countries is so low that the priority given by policy makers to central grid extension must be questioned. Rather than maximizing the extent of often unreliable or simply unenergized central grid extensions, we sought to show the imperative to consider a multi-track approach to electricity access that includes microgrids and high quality solar lighting products. Through case studies and modeling efforts based on extensive empirical data, this research provides new insight to this imperative and elucidates on the nature of …

An Analysis Of Fuel Cell Vehicle Models By Major Automakers, Florida Solar Energy Center, Nan Qin

FSEC Energy Research Center®

Fuel cell electric vehicles (FCEVs) use hydrogen as fuel and exhaust only water. They provide driving ranges and fueling times comparable to gasoline vehicles. Despite the advantages, FCEVs have been in and out of spot light of the auto industry for the past several decades. The information on the development of fuel cell vehicles by major automakers is disparate. This report systematically examined the technical developments of FCEVs since the introduction of the first lab-based fuel cell vehicle in 1966. It included an overview of 117 FCEV models from 31 automakers. It should help the stakeholders to gain an insight …

Groundbreaking For Electric Vehicle And Roadway (Evr) Test Facility Gets Press Coverage | Utah State University Power Electronics Lab, Usu College Of Engineering

College of Engineering News

USU officials and UPEL faculty broke ground for the Electric Vehicle and Roadway (EVR) Test Facility. This facility is the first of its kind in the United States and hopes to push the envelope of advanced research in wireless power transfer for electric vehicles in motion. Construction is expected to complete in the Spring of 2015.

Investigating The Stability Of Eliposomes At Elevated Temperatures, Ghaleb A. Husseini, William G. Pitt, Marjan Javadi

Faculty Publications

eLiposomes encapsulate a perfluorocarbon nanoemulsion droplet inside a liposome. Ultrasound is then used as a trigger mechanism to vaporize the perfluorocarbon, break the liposome, and release the desired drug to the tumor tissue. The purpose of this research is to show that eLiposomes synthesized using perfluoropentane are stable above the normal boiling point of the perfluoropentane and at body temperature and thus has potential for use in vivo. Experiments involving the release of fluorescent calcein molecules were performed on eLiposomes to measure the release of calcein at various temperatures in the absence of ultrasound. Results showed that eLiposomes are stable …

Investigating The Stability Of Eliposomes At Elevated Temperatures, Ghaleb A. Husseini, William G. Pitt, Marjan Javadi

Faculty Publications

eLiposomes encapsulate a perfluorocarbon nanoemulsion droplet inside a liposome. Ultrasound is then used as a trigger mechanism to vaporize the perfluorocarbon, break the liposome, and release the desired drug to the tumor tissue. The purpose of this research is to show that eLiposomes synthesized using perfluoropentane are stable above the normal boiling point of the perfluoropentane and at body temperature and thus has potential for use in vivo. Experiments involving the release of fluorescent calcein molecules were performed on eLiposomes to measure the release of calcein at various temperatures in the absence of ultrasound. Results showed that eLiposomes are stable …

The Santa Clara, 2014-09-25, Santa Clara University

The Santa Clara

No abstract provided.

Pump Design And Development For High Shear Grout Mixing Applications, John Kijak, David Kennedy

Conference Papers

No abstract provided.

Performance Of Columnar 7-8 Wt% Ysz Coatings On Platinum Aluminide Bondcoats, Christopher Petorak

Thermal Barrier Coatings IV

No abstract provided.

Liquid Metal Electrodes For Rechargeable Batteries, Rutooj Deshpande, Juchuan Li, Yang-Tse Cheng

Chemical and Materials Engineering Faculty Patents

An electrode for a lithium ion battery includes a liquid metal having a melting point that is below the operating temperature of the battery, which transforms from a liquid to a solid during lithiation, and wherein the liquid metal transforms from a solid to a liquid during delithiation.

The Effect On Instructor Workload Of Implementing Active Teaching Methods To Improve Student Enthusiasm And Performance, Cory Mettler, Nate Ziegler

ASEE Best Practice Series Presentations

No abstract provided.

Utah State University To Break Ground For Electric Vehicle And Roadway Test Track, Usu College Of Engineering

College of Engineering News

Utah State University will break ground on Sept. 23 for its state-of-the-art Electric Vehicle and Roadway (EVR) Research Facility and Test Track, the first facility of its kind in the United States.

Optimal Pmu Placement For Identification Of Multiple Power Line Outages In Smart Grids, Jie Wu, Jinjun Xiong, Prasenjit Shil, Yiyu Shi

Electrical and Computer Engineering Faculty Research & Creative Works

Placing appropriate numbers of PMUs is critical to collect phase angle data for best identifying multiple line outages in wide-area transmission system, because of high deployment costs. This work focuses on exploring the global optimal strategy of PMU deployment for maximizing the average identification capability of multiple line outages. Inspired by Kullback-Leibler (KL) distance, this paper proposes the closed-form mathematical model to describe the average identification capability of multiple simultaneous line outages. Using IEEE 14-bus system, the optimal trade-off between the average identification capability and the number of PMUs is characterized. The proposed model successfully portrays the statistical identification performance …

Development Of An Integrated Network Visualization And Graph Analysis Tool For Biological Networks, David Carbonetta

Theses and Dissertations

There has been steady increase in the amount of molecular data generated by experiments and computational methods performed on biological networks. There is a growing need to obtain an insight into the organization and structure of the massive and complex biological networks formed by the interacting molecules. To that end, this work presents the development of an integrated network visualization and graph analysis plugin within the Cytoscape framework. The plugin is capable of computing and visualizing a comprehensive set of dyad, node, and graph level statistics. The evaluation of the plugin on a range of biological networks and its memory …

Breast Cancer Detection Using Interferometric Music: Experimental And Numerical Assessment, Giuseppe Ruvio, Raffaele Solimene, Antonio Cuccaro, Domenico Gaetano, Jacinta Browne, Max Ammann

Articles

Purpose: In microwave breast cancer detection, it is often beneficial to arrange sensors in close proximity to the breast. The resultant coupling generally changes the antenna response. As an a priori characterization of the radio frequency system becomes difficult, this can lead to severe degradation of the detection efficacy. The purpose of this paper is to demonstrate the advantages of adopting an interferometric multiple signal classification (I-MUSIC) approach due to its limited dependence from a priori information on the antenna. The performance of I-MUSIC detection was measured in terms of signal-to-clutter ratio (SCR), signal-to-mean ratio (SMR), and spatial displacement (SD) …

Near-Infrared Optical Absorption Enhanced In Black Silicon Via Ag Nanoparticle-Induced Localized Surface Plasmon, Peng Zhang, Shibin Li, Chunhua Liu, Xiongbang Wei, Zhiming Wu, Yadong Jiang, Zhi Chen

Electrical and Computer Engineering Faculty Publications

Due to the localized surface plasmon (LSP) effect induced by Ag nanoparticles inside black silicon, the optical absorption of black silicon is enhanced dramatically in near-infrared range (1,100 to 2,500 nm). The black silicon with Ag nanoparticles shows much higher absorption than black silicon fabricated by chemical etching or reactive ion etching over ultraviolet to near-infrared (UV-VIS-NIR, 250 to 2,500 nm). The maximum absorption even increased up to 93.6% in the NIR range (820 to 2,500 nm). The high absorption in NIR range makes LSP-enhanced black silicon a potential material used for NIR-sensitive optoelectronic device.

PACS

78.67.Bf; 78.30.Fs; 78.40.-q; 42.70.Gi

Optimizing Operation Of A Campus Energy System For Economic And Environmental Considerations, John Imperatore Iii

Theses and Dissertations

The objective of this thesis is to determine effective costs of campus utilities, optimal operation of energy conversion and production subsystems through minimization of economic and environmental costs, and to evaluate how changing electrical grid costs and sources will affect future optimal operations at a campus. Characteristic days were developed to typify campus activities and their impact on energy consumption. At current grid electricity and natural gas prices, utilization of a cogeneration unit, a form of combined heat and power plant, is less expensive than purchasing equivalent amounts of electric and gas to produce steam, as long as there is …

Improved Field Projection In Equivalence Principle Algorithm With Rotated Cwbc Basis, Zu Hui Ma, Sheng Sun, Lijun Jiang, Weng Cho Chew, Mao Kun Li

Electrical and Computer Engineering Faculty Research & Creative Works

In this paper, a dual-basis testing method is utilized to enhance the field projection in the equivalence principle algorithm (EPA). Due to the presence of identity operators in the EPA formulation, the near-field calculation is less accurate with field projection errors. This issue can be effectively remedied by using the recently proposed dual-basis function of Rao-Wilton-Glisson basis function, named as rotated Chen-Wilton-Buffa-Christiansen basis function. Numerical result shows the validity of the proposed method.

Use Of Blood Oxygenator Membrane Units In Teaching Mass Balances, Friction Factor And Mass Transfer Analysis, Keith Mciver

Theses and Dissertations

Many applications of chemical engineering principles are biomedical but traditional chemical engineering education does not focus on these applications. New laboratory experiments with hollow fiber blood oxygenators allow integration of concepts into already full programs. This work describes three new educational experiments that have been developed to introduce students to concepts of mass balances, mass transfer and momentum transfer as applied to a hollow fiber blood oxygenator. In addition, a new mass transfer correlation is presented for the Medtronic Affinity NT blood oxygenator, which has not been reported previously in the literature. Mass transfer of oxygen through the hollow fiber …

A Discontinuous Galerkin Time Domain-Boundary Integral Method For Analyzing Transient Electromagnetic Scattering, Ping Li, Li (Lijun) Jun Jiang, Yifei Shi, Hakan Bagci

Electrical and Computer Engineering Faculty Research & Creative Works

This paper presents an algorithm hybridizing discontinuous Galerkin time domain (DGTD) method and time domain boundary integral (BI) algorithm for 3-D open region electromagnetic scattering analysis. The computational domain of DGTD is rigorously truncated by analytically evaluating the incoming numerical flux from the outside of the truncation boundary through BI method based on the Huygens' principle. The advantages of the proposed method are that it allows the truncation boundary to be conformal to arbitrary (convex/ concave) scattering objects, well-separated scatters can be truncated by their local meshes without losing the physics (such as coupling/multiple scattering) of the problem, thus reducing …

Second-Harmonic Generation In Metal Nanoparticles Modeling By Surface Integral Equation, Xiaoyan Y.Z. Xiong, Li (Lijun) Jun Jiang, Yat Hei Lo, Weng Cho Chew

Electrical and Computer Engineering Faculty Research & Creative Works

Metals are centrosymmetric materials which only posse local surface second-harmonic (SH) nonlinearities due to the symmetry broken at the surface. In this work the surface integral equation (SIE) is used for evaluating SH radiation generated from metal nanoparticles with arbitrary shapes. The whole SIE system is solved by employing the Galerkin testing procedure and Rao-Wilton-Gillson (RWG) basis functions. The mutual coupling between fundamental and second harmonic field is captured. The method is validated by comparisons with the analytic SH-Mie solution. This method paves the way for accurate and efficient design of general SH nonlinear nanoplasmonic structures.

Applying Cem Techniques To Solve Nano-Scale Quantum Transport Problems, Jun Z. Huang, Weng Cho Chew, Li (Lijun) Jun Jiang

Electrical and Computer Engineering Faculty Research & Creative Works

Two widely used algorithms in computational electromagnetics (CEM) society, namely the asymptotic waveform evaluation (AWE) technique and the model order reduction (MOR) mode matching method, are employed to calculate electron wave propagation in novel nanoelectronic devices.

Linearly Polarized Near Field Focused Slot-Array Waveguide, Meng Lin Chen, Shulabh Gupta, Zi Long Ma, Li (Lijun) Jun Jiang

Electrical and Computer Engineering Faculty Research & Creative Works

A 2-D slot array structure to achieve near-field beam focusing, with a linear polarization, is proposed and demonstrated using full-wave simulations. The proposed structure has a negligible cross-polarization and its far-field gain is lower by 10 dB compared to the non-focus case, indicating a good focusing in the near-field of the structure.

An Ibc Enhanced Dgtd Scheme For Transient Analysis Of Em Interactions With Graphene, Ping Li, Li (Lijun) Jun Jiang, Hakan Baʇci

Electrical and Computer Engineering Faculty Research & Creative Works

A discontinuous Galerkin time-domain (DGTD) method is proposed for analyzing electromagnetic field interactions on graphene from microwave to terahertz frequencies. An impedance boundary condition (IBC) is utilized to model the graphene within the DGTD framework. The numerical flux is reformulated to take into account the IBC. Highly dispersive surface conductivity of graphene present in the resulting flux expression is approximated in terms of rational functions using the fast-relaxation vector-fitting technique. Via inverse Laplace transform, this facilitates the time domain matrix equations into an integral form for time variable t, finite integral technique (FIT) with recursive convolution method is employed to …

Reduced-Permittivity Meandered Single-Beam Full-Space Scanning Phase-Reversal Leaky-Wave Antenna, Shulabh Gupta, Li (Lijun) Jun Jiang, Christophe Caloz

Electrical and Computer Engineering Faculty Research & Creative Works

A meandered version of the phase-reversal leaky-wave antenna is introduced to reduce the permittivity requirement εeff > 4 for single-beam full-space scanning.