Engineering Commons^™

Change Of Exposure Time Mid-Test In High Temperature Dic Measurement, Thinh Quang Thai, Adam J. Smith, Robert J. Rowley, Paul R. Gradl, Ryan B. Berke

Mechanical and Aerospace Engineering Faculty Publications

Performing digital image correlation (DIC) at extreme temperatures has been greatly challenging due to the radiation which saturates the camera sensor. At such high temperatures, the light intensity emitted from an object is occasionally so powerful that the acquired images are overwhelmingly saturated. This induces data loss, potentially ruining the test, thus requiring the user to restart the test. For this reason, selection of an appropriate camera sensitivity plays a crucial role prior to beginning the test. Exposure time is a factor contributing to camera sensitivity and it is the easiest setting to manipulate during the test since it introduces …

Acute Mechanical Stress In Primary Porcine Rpe Cells Induces Angiogenic Factor Expression And In Vitro Angiogenesis, Farhad Farjood, Amir Ahmadpour, Sassan Ostvar, Elizabeth Vargis

Biological Engineering Faculty Publications

Background

Choroidal neovascularization (CNV) is a major cause of blindness in patients with age-related macular degeneration. CNV is characterized by new blood vessel growth and subretinal fluid accumulation, which results in mechanical pressure on retinal pigment epithelial (RPE) cells. The overexpression of RPE-derived angiogenic factors plays an important role in inducing CNV. In this work, we investigated the effect of mechanical stress on the expression of angiogenic factors in porcine RPE cells and determined the impact of conditioned medium on in-vitro angiogenesis.

Results

The goal of this study was to determine whether low levels of acute mechanical stress during early …

Biological Engineering Student Receives Peak Prize At Usu Robins Awards, Usu College Of Engineering

College of Engineering News

April 23, 2020 — Utah State University biological engineering undergraduate Morgan Bishop received the Undergraduate Researcher of the Year at this year’s Robins Awards. The Peak Prize is awarded to one student each year who shows consistent engagement in independent inquiry through student employment and their independent research grants. Award winners also typically seek out opportunities to share their results in undergraduate research events and professional conferences. She received the award April 10.

Linear Covariance Navigation Analysis Of Range And Image Measurement Processing For Autonomous Lunar Lander Missions, Randall Christensen, David Geller, Michael Hansen

Space Dynamics Laboratory Publications

Growing interest in autonomous landing on the lunar surface has motivated in-depth studies of the navigation architectures to support such missions. The research presented in this paper extends linear covariance models of terrain-relative navigation architectures to incorporate both image-based measurements to known landmarks and laser range measurements to the lunar surface. The benefit of the range measurements is shown to be significant in reducing relative position and velocity errors in the altitude channel, as compared to an image-only navigation architecture. The range measurements are also shown to reduce the sensitivity of final relative navigation errors to the turn-on time of …

Biological Engineering Professor Named Fellow Of National Organization, Usu College Of Engineering

College of Engineering News

April 15, 2020 — Utah State University Professor Ron Sims was named fellow of the Institute of Biological Engineering, or IBE, on April 1.

Usu Engineering Programs Ranked In Top 50, Top 100 Nationally, Usu College Of Engineering

College of Engineering News

April 13, 2020 — Three of Utah State University’s College of Engineering graduate programs were again ranked alongside some of the top-performing schools in the nation.

Nytrox As “Drop-In” Replacement For Gaseous Oxygen In Smallsat Hybrid Propulsion Systems, Stephen A. Whitmore

Mechanical and Aerospace Engineering Faculty Publications

A medical grade nitrous oxide (N₂O) and gaseous oxygen (GOX) “Nytrox” blend is investigated as a volumetrically-efficient replacement for GOX in SmallSat-scale hybrid propulsion systems. Combined with 3-D printed acrylonitrile butadiene styrene (ABS), the propellants represent a significantly safer, but superior performing, alternative to environmentally-unsustainable spacecraft propellants like hydrazine. In a manner analogous to the creation of soda-water using dissolved carbon dioxide, Nytrox is created by bubbling GOX under pressure into N₂O until the solution reaches saturation. Oxygen in the ullage dilutes N₂O vapor and increases the required decomposition energy barrier by several orders …

In Memoriam: Former Director Of Utah Water Research Lab Dies From Covid-19, Usu College Of Engineering

College of Engineering News

April 9, 2020 — A former Utah State University professor of civil engineering and former director of the Utah Water Research Laboratory has died after a month-long battle with COVID-19, his wife said.

Usu And Community Join To Provide Protective Health Care Equipment, Usu College Of Engineering

College of Engineering News

April 8, 2020 — The College of Engineering and the Center for Persons with Disabilities at Utah State University are collaborating to provide medical grade personal protective equipment to health care workers in northern Utah. Now they are asking businesses and individuals to join them.

Reu Site: Engineering Education Research On Undergraduate Engineering Students' Problem Solving Capacity, Oenardi Lawanto

Funded Research Records

No abstract provided.

Dynamics Of The Ionospheric Energetics (Dione) 2018, Ryan Davidson, Charles Swenson

Funded Research Records

No abstract provided.

Faculty Promotions 2020, Usu College Of Engineering

College of Engineering News

April 3, 2020 — The College of Engineering at Utah State University extends its congratulations to four newly- promoted faculty members.

Usu Biological Engineering Student Named Goldwater Scholar, Usu College Of Engineering

College of Engineering News

April 1, 2020 — Utah State University student Andrew Kjar was named a 2020 Goldwater Scholar in a prestigious national competition that recognizes outstanding achievements in science and mathematics.

Collaborative Sharing Of Multidimensional Space-Time Date In A Next Generation Hydrologic Information System, Tian Gan, David G. Tarboton, Jeffery S. Horsburgh, Pabitra Dash, Ray Idaszak, Hong Yi

Civil and Environmental Engineering Faculty Publications

In hydrologic research, there is a need to manage, archive, and publish data in a discoverable way to increase data reuse, transparency, and reproducibility. Multidimensional space-time data are commonly used in hydrologic research, and systems are needed for sharing and exchanging such data. Simply exchanging files may result in loss of metadata information and can be challenging when files are large. We developed an approach to manage, share, and publish multidimensional space-time data in HydroShare, a next generation hydrologic information system and domain specific repository. This paper presents the design, development, and testing of this approach. We selected the Network …

Robust Secure Wireless Powered Miso Cognitive Mobile Edge Computing, Boyang Liu, Jiajia Song, Jin Wang, Haijan Sun, Qun Wang

Electrical and Computer Engineering Student Research

Wireless power transfer (WPT) and cognitive radio (CR) are two promising techniques in designing mobile-edge computing (MEC) systems. In this paper, we study a robust secure wireless powered multiple-input single-output (MISO) cognitive MEC system, which integrates several techniques: physical-layer security, WPT, CR, underlay spectrum sharing and MEC. Three optimization problems are formulated to minimize the total transmission power (TTP) of the primary transmitter (PT) and the secondary base station (SBS) under perfect channel state information (CSI) model, bounded CSI error model and the probabilistic CSI error model, respectively. The formulated problems are nonconvex and hard to solve. Three two-phase iterative …

Lecture Notes: Nonlinear Optimization And Matlab Optimization Toolbox Example, Lina Sela

All ECSTATIC Materials

No abstract provided.

Lecture Notes: Multi-Objective Optimization, Lina Sela

All ECSTATIC Materials

No abstract provided.

Video Conversations - The Future Of The Colorado River, John C. Schmidt, David E. Rosenberg

All ECSTATIC Materials

This video series explores key Colorado River management issues with key managers across the basin. Video discussions in the table on the next page are presented in the order they were recorded. Topics include river ecosystems, California, Upper Basin, Tribal, and Federal perspectives, as well as future hydrology and climate. Each video runs for 60 to 90 minutes. Speakers start by describing how they got to the place they are professionally. There are prepared remarks and questions and answers from participants who attended at the time the video was recorded. Links to suggested readings are provided. Click the VIDEO url …

Usu Engineering Education Student Receives Nsf Research Fellowship, Usu College Of Engineering

College of Engineering News

April 1, 2020 — A Utah State University doctoral student will receive one of the nation’s most distinguished student research fellowships valued at approximately $138,000.

Extending Water Resources Performance Metrics To River Ecosystems, Belize A. Lane, J. Pablo Ortiz-Partida, Samuel Sandoval-Solis

Civil and Environmental Engineering Faculty Publications

A persistent challenge in integrated water management is the ability to accurately evaluate human and ecological tradeoffs. Two-dimensional (2D) hydraulic models are frequently used to evaluate water management alternatives concerning aquatic species physical habitat needs or preferences. Recent studies have assessed the timing or duration of suitable habitat conditions, but no standardized approach exists to integrate and interpret ecohydraulic model outputs within a water management framework. Such an approach is needed to maximize the information obtained from model outputs and to facilitate communication between river scientists and water managers. This study presents a general framework to aggregate and summarize 2D …

2020 Engineering State Summer Camp Canceled Due To Coronavirus, Usu College Of Engineering

College of Engineering News

News Release—March 25, 2020— In response to the growing concerns about COVID-19, the College of Engineering at Utah State University is canceling its 2020 Engineering State youth summer camp.

College Of Engineering Implements New Online Tutoring System, Usu College Of Engineering

College of Engineering News

March 23, 2020 — Due to concerns over COVID-19, Utah State University’s College of Engineering is switching to an online-only tutoring system.

Proper Orthogonal Decomposition And Recurrence Map For The Identification Of Spatial–Temporal Patterns In A Low-Re Wake Downstream Of Two Cylinders, Meihua Zhang, Zhongquan Charlie Zheng, Huixuan Wu

Mechanical and Aerospace Engineering Faculty Publications

Flow decomposition methods provide systematic ways to extract the flow modes, which can be regarded as the spatial distribution of a coherent structure. They have been successfully used in the study of wake, boundary layer, and mixing. However, real flow structures also possess complex temporal patterns that can hardly be captured using the spatial modes obtained in the decomposition. In order to analyze the temporal variation of coherent structures in a complex flow field, this paper studies the recurrence in phase space to identify the pattern and classify the evolution of the flow modes. The recurrence pattern depends on the …

Congratulations To College Of Engineering Researchers, Usu College Of Engineering

College of Engineering News

March 18, 2020 — The College of Engineering community extends its congratulations to the students and faculty who are recognized for their outstanding accomplishments in research.

Reducing Road Wear While Ensuring Comfort And Charging Constraints For Dynamically Charged Passenger Vehicles Through Noise-Shaped Path Variations, Clint Jay Ferrin, Randall Christensen

Electrical and Computer Engineering Faculty Publications

Dynamically charged vehicles suffer from power loss during wireless power transfer due to receiver and transmitter coil misalignment while driving. Autonomous, dynamically charged vehicles can maximize wireless power transfer by minimizing the misalignment, but the repeated high-precision driving increases road wear. To avoid unnecessary road wear and rutting, a noise shaping filter is proposed that adds variability to a vehicle's trajectory that complies with passenger acceleration and position constraints. However, introducing variability into an optimal charging path also risks depleting battery life prior to destination arrival. Therefore, a path planner is proposed that guarantees average charge within a specified probability …

12 Outstanding Students Recognized At Awards Banquet, Usu College Of Engineering

College of Engineering News

March 16, 2020 — The College of Engineering extends its heartfelt congratulations to the 12 undergraduate students recognized at the Engineers Week Awards Banquet.

Faculty Award Winners Recognized At Awards Banquet, Usu College Of Engineering

College of Engineering News

March 16, 2019 — The College of Engineering extends its congratulations to the two faculty award winners recognized at the Engineers Week Awards Banquet.

Reu Site: Tomorrow's Nanomanufacturing: Engineering With Science (Tnews), Keith Roper

Funded Research Records

No abstract provided.

Usu Electrical And Computer Engineering Alum Named Intel Fellow, Usu College Of Engineering

College of Engineering News

March 6, 2019 — One of the world’s largest technology manufacturers has named a Utah State University College of Engineering alumnus to its corporate fellowship.

Engineering Networking Conference Connects Students With Industry, Usu College Of Engineering

College of Engineering News

March 5, 2020 — The USU chapter of the Institute of Electrical and Electronics Engineers, or IEEE, will host its annual Student-Professional Awareness Conference on March 14.