Search Results - "Lee, Hyoung K."

Three-dimensional localization of low activity gamma-ray sources in real-time scenarios by Sharma, Manish K., Alajo, Ayodeji B., Lee, Hyoung K.

“…Radioactive source localization plays an important role in tracking radiation threats in homeland security tasks. Its real-time application requires…”
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A fast and scalable method for quality assurance of deformable image registration on lung CT scans using convolutional neural networks by Galib, Shaikat M., Lee, Hyoung K., Guy, Christopher L., Riblett, Matthew J., Hugo, Geoffrey D.

“…Purpose To develop and evaluate a method to automatically identify and quantify deformable image registration (DIR) errors between lung computed tomography…”
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Comparison of active interrogation methods for source location in a scattering and absorbing medium, consisting of PGNAA, and an AmBe quasi-forward biased directional source by Paaren, Kyle M., Kilby, Seth, Lee, Hyoung K.

“…Source location of Special Nuclear Material (SNM) encompassing 95% 235U and 239Pu is identified by utilizing a directional source from Patent No:…”
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Active interrogation of Special Nuclear Material containers using AmBe quasi-forward biased directional source and PGNAA by Paaren, Kyle M., Kilby, Seth, Lee, Hyoung K.

“…Special Nuclear Material (SNM) including 95% 235U and 239Pu is capable of being identified by utilizing a quasi-forward directional AmBe source from Patent No:…”
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Looking Inside a Prototype Compact X-Ray Tube Comprising CNT-Based Cold Cathode and Transmission-Type Anode by Avachat, Ashish V, Tucker, Wesley W, Giraldo, Carlos H. C, Pommerenke, David, Lee, Hyoung K

“…In this article, we offer a look inside our prototype compact X-ray tube by reporting on our findings when we experimentally studied it. We studied the…”
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Particle-In-Cell Simulations of Electron Focusing for a Compact X-Ray Tube Comprising CNT-Based Electron Source and Transmission Type Anode by Avachat, Ashish V., Tucker, Wesley W., Giraldo, Carlos H. C., Lee, Hyoung K.

“…For real-time computed tomography (CT), a temporal resolution lower than 30 ms is required, which cannot be delivered by conventional CT architectures with a…”
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A source biasing and variance reduction technique for Monte Carlo radiation transport modeling of emission tomography problems by Kilby, Seth, Jin, Zhongmin, Avachat, Ashish, Kanies, Bryant, Woolstenhulme, Nicholas, Lee, Hyoung K., Graham, Joseph

“…A numerical radiation transport methodology for predicting gamma emission tomographs was developed utilizing the deterministic fuel burn-up software, ORIGEN,…”
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Correction to: A source biasing and variance reduction technique for Monte Carlo radiation transport modeling of emission tomography problems by Kilby, Seth, Jin, Zhongmin, Avachat, Ashish, Kanies, Bryant, Woolstenhulme, Nicolas, Lee, Hyoung K., Graham, Joseph

“…In the original article, Equation 4 was incorrectly published. The correct equation is provided in this correction…”
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Design and development of a neutron/X-ray combined computed tomography system at Missouri S&T by Sinha, Vaibhav, Avachat, Ashish V., Lee, Hyoung K.

“…A new method for non-destructive analysis has been developed using a combined neutron/X-ray imaging system at the Missouri Science & Technology Reactor (MSTR)…”
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A Monte Carlo simulation study of a flat-panel X-ray source by Grant, Edwin J., Posada, Chrystian M., Castaño, Carlos H., Lee, Hyoung K.

“…A novel flat-panel transmission X-ray source based on nitrogen-incorporated ultra-nano-crystalline diamond (N-UNCD) field emitters is being developed for…”
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Simulation study of electron beam optics for a distributed X-ray source toward stationary CT architecture by Fox, Jordan, Lee, Hyoung K., Alajo, Ayodeji B., Avachat, Ashish

“…For computed tomography (CT) imaging to be considered “real time”, one set of tomographic projections are to be acquired in less than 30 ms. Current…”
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The viability of ADVANTG deterministic method for synthetic radiography generation by Bingham, Andrew, Lee, Hyoung K.

“…Fast simulation techniques to generate synthetic radiographic images of high resolution are helpful when new radiation imaging systems are designed. However,…”
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Accelerated radiation transport modeling techniques for pencil beam computed tomography using gamma rays by Jin, Zhongmin, Kilby, Seth, Avachat, Ashish, Kanies, Bryant, Woolstenhulme, Nicolas, Lee, Hyoung K., Graham, Joseph

“…Monte Carlo radiation transport modeling studies were performed for a compact, and high-resolution gamma-ray computed tomography system designed for imaging…”
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Comparison of active interrogation methods for source location in a scattering and absorbing medium, consisting of PGNAA, and an AmBe quasi-forward biased directional source by Paaren, Kyle M., Kilby, Seth, Lee, Hyoung K.

“…Source location of Special Nuclear Material (SNM) encompassing 95% 235U and 239Pu is identified by utilizing a directional source from Patent No:…”
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EFFECTS OF TEMPERING AND PWHT ON MICROSTRUCTURES AND MECHANICAL PROPERTIES OF SA508 GR.4N STEEL by LEE, KI-HYOUNG, JHUNG, MYUNG JO, KIM, MIN-CHUL, LEE, BONG-SANG

“…Presented in this study are the variations of microstructures and mechanical properties with tempering and Post-Weld Heat Treatment (PWHT) conditions for SA508…”
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Active interrogation of Special Nuclear Material containers using AmBe quasi-forward biased directional source and PGNAA by Paaren, Kyle M., Kilby, Seth, Lee, Hyoung K.

“…Special Nuclear Material (SNM) including 95% 235U and 239Pu is capable of being identified by utilizing a quasi-forward directional AmBe source from Patent No:…”
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Comparison of a semi-analytic variance reduction technique to classical Monte Carlo variance reduction techniques for high aspect ratio pencil beam collimators for emission tomography applications by Kilby, Seth, Fletcher, Jack, Jin, Zhongmin, Avachat, Ashish, Imholte, Devin, Woolstenhulme, Nicolas, Lee, Hyoung K., Graham, Joseph

“…A semi-analytic variance reduction technique developed for collimated gamma emission tomography problems was compared to classic Monte Carlo variance reduction…”
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3D characterization of structure and micro-porosity in two cast irons with spheroidal graphite by Lekakh, Simon N., Zhang, Xueliang, Tucker, Wesley, Lee, Hyoung K., Selly, Tara, Schiffbauer, James D.

“…Formation of low density graphite phase during solidification increases the volume of semi-solid cast iron with spheroidal graphite (SGI) and resulted pressure…”
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Micro-CT Quantitative Evaluation of Graphite Nodules in SGI by Lekakh, Simon N., Zhang, Xueliang, Tucker, Wesley, Lee, Hyoung K., Selly, Tara, Schiffbauer, James D.

“…The quality of spheroidal graphite cast iron (SGI) castings is directly related to the morphology of graphite nodules. Therefore, accurate and comprehensive…”
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Conduction noise absorption by fiber-reinforced epoxy composites with carbon nanotubes by Lee, Ok Hyoung, Kim, Sung-Soo, Lim, Yun-Soo

“…Nearly all electronic equipment is susceptible to malfunction as a result of electromagnetic interference. In this study, glass fiber, and carbon fiber as a…”
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