Search Results - "McJunkin, Timothy R."

An efficient implementation of the gliding box lacunarity algorithm by Tolle, Charles R., McJunkin, Timothy R., Gorsich, David J.

“…Lacunarity is a measure of how data fills space. It complements fractal dimension, which measures how much space is filled. Many researchers use the gliding…”
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Automated interpretation of LIBS spectra using a fuzzy logic inference engine by Hatch, Jeremy J, McJunkin, Timothy R, Hanson, Cynthia, Scott, Jill R

“…Automated interpretation of laser-induced breakdown spectroscopy (LIBS) data is necessary due to the plethora of spectra that can be acquired in a relatively…”
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Operational resilience metrics for power systems with penetration of renewable resources by Gui, Jianzhong, Lei, Hangtian, McJunkin, Timothy R., Chen, Bo, Johnson, Brian K.

“…Modern power grid is evolving towards carbon neutrality by deploying increasing amount of renewable energy resources. However, the impact of renewable…”
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Using Computational Fluid Dynamics of Wind Simulations Coupled With Weather Data to Calculate Dynamic Line Ratings by Abboud, Alexander W., Gentle, Jake P., McJunkin, Timothy R., Lehmer, Jacob P.

“…Dynamic line rating is a technology that allows for the rating of electrical conductors to be calculated based on local weather conditions rather than using…”
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Integrating Operator Function in Work Domain Analysis of Electric Grid Operations by Li, Ruixuan, McJunkin, Timothy R., Blanc, Katya Le

“…The electric grid system is complex, and whether the failure of a subsystem can cascade through the whole system depends on the severity and the type of…”
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Investigating Net-Zero Microgrids for Facilities: A Case Study for Idaho National Laboratory by Poudel, Bikash, Gilbert, Jeremiah, McJunkin, Timothy R., Archibald, Ian L., Myers, Kurt S., Kang, Ning, Stoops, Thomas M., Auble, Michael H., Barnes, Kenneth A., Dixon, Samuel R.

“…The concept of net-zero carbon microgrids (NZMs) has received significant interest in recent years considering its promises to provide both energy resilience…”
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Comparison of ion trajectories in vacuum and viscous environments using SIMION: Insights for instrument design by Dahl, David A., McJunkin, Timothy R., Scott, Jill R.

“…The effective use of electrostatic and magnetic fields to control ion motion serves as the foundation for many scientific instruments. The advent of powerful…”
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The predictive power of SIMION/SDS simulation software for modeling ion mobility spectrometry instruments by Lai, Hanh, McJunkin, Timothy R., Miller, Carla J., Scott, Jill R., Almirall, José R.

“…The combined use of SIMION 7.0 and the statistical diffusion simulation (SDS) user program in conjunction with SolidWorks ® with COSMSOSFloWorks ® fluid…”
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Frequency Resilience Enhancement for Power Systems with High Penetration of Grid-Forming Inverters by Gui, Jianzhong, Lei, Hangtian, McJunkin, Timothy R., Johnson, Brian K.

“…Grid following inverter-based renewable generation has replaced conventional generation in recent years, resulting in lower system inertia. The frequency…”
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Lacunarity definition for ramified data sets based on optimal cover by Tolle, Charles R., McJunkin, Timothy R., Rohrbaugh, David T., LaViolette, Randall A.

“…Lacunarity is a measure of how data fills space. It complements fractal dimension, which measures how much space is filled. This paper discusses the…”
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A Use Case Structure for Technology Integration by Li, Ruixuan, Phillips, Tyler B., McJunkin, Timothy R., Blanc, Katya Le

“…In recent years, integrating innovative technologies into the work domain have reduced workload, simplified the work process, saved business costs, and…”
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A Cyber Resilient Design for Control Systems by Rieger, Craig, Kolias, Constantinos, Ulrich, Jacob, McJunkin, Timothy R.

“…To achieve the 5 R's of resilient control systems (RCSs), specifically recon, resist, respond, restore and ultimately recover, a cyber resilient control system…”
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Transmission Adaptive Capacity-Based Resilience Metrics for Power Grid Contingency Analysis by Gui, Jianzhong, Lei, Hangtian, Chakhchoukh, Yacine, McJunkin, Timothy R., Johnson, Brian K.

“…Power system resilience generally represents the capability of the system recovering from a degraded state to normal operation in an acceptable period of time…”
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Exploring Biosignatures Associated with Thenardite by Geomatrix-Assisted Laser Desorption/Ionization Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (GALDI-FTICR-MS) by Richardson, C. Doc, Hinman, Nancy W., McJunkin, Timothy R., Kotler, J. Michelle, Scott, Jill R.

“…Geomatrix-assisted laser desorption/ionization (GALDI) in conjunction with a Fourier transform ion cyclotron resonance mass spectrometer (FTICR-MS) has been…”
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Novel Health Assessment Techniques for a Modern Power Distribution System by Ivans, Robert C., Russell, Pierce L., Phillips, Tyler B., Singh, Vivek K., McJunkin, Timothy R., Rieger, Craig G.

“…Distribution systems are large and complex systems that grow over time. When contingencies occur dispatchers, engineers, and executives need to know the answer…”
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Convergent flow observed in a laboratory-scale unsaturated fracture system by LaViolette, Randall A., Glass, R. J., Wood, Thomas R., McJunkin, Timothy R., Noah, K. S., Podgorney, Robert K., Starr, Robert C., Stoner, Daphne L.

“…An experiment was designed to observe water flow in a simple analogue fractured rock network. The fracture network was modeled by the gaps between an array of…”
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Assessment of Electric Grid Transmission System Simulator for Human Factors Research by Li, Ruixuan, McJunkin, Timothy R., Le Blanc, Katya

“…Over the past decades, various technologies have been developed for electric grid operations to support clean energy, meet rising electricity demands, and…”
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Impact of microorganisms on unsaturated flow at fracture intersections by Stoner, Daphne L., Stedtfeld, Robert D., Tyler, Tina L., White, Fred J., McJunkin, Timothy R., LaViolette, Randall A.

“…An experiment is described in which a groundwater bacterium, Sphingomonas sp., influenced the dynamics of unsaturated flow at a fracture intersection. A washed…”
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Using Computational Fluid Dynamics of Wind Simulations Coupled With Weather Data to Calculate Dynamic Line Ratings by Abboud, Alexander W., Gentle, Jake P., McJunkin, Timothy R., Lehmer, Jacob P.

“…Dynamic line rating is a technology that allows for the rating of electrical conductors to be calculated based on local weather conditions rather than using…”
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Coupling computational fluid dynamics with the high resolution rapid refresh model for forecasting dynamic line ratings by Abboud, Alexander W., Fenton, Kenneth R., Lehmer, Jacob P., Fehringer, Benjamin A., Gentle, Jake P., McJunkin, Timothy R., Le Blanc, Katya L., Petty, Melissa A., Wandishin, Matthew S.

“…•Calculated CFD fields to resolve the wind near overhead transmission lines.•A year of forecasted data from the HRRR model analyzed compared to weather…”
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