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Displaying 151 - 175 of 904

Layer-Skipping Connections Improve the Effectiveness of Equilibrium Propagation on Layered Networks

May 17, 2021

Author(s)

Jimmy I. Gammell, Sae Woo Nam, Adam McCaughan

Equilibrium propagation is a learning framework that marks a step forward in the search for a biologically-plausible implementation of deep learning, and could be implemented efficiently in neuromorphic hardware. Previous applications of this framework to

Microscale Structure to Property Prediction for Additively Manufactured IN625 through Advanced Identification of Material Law

May 11, 2021

Author(s)

Sourav Saha, Orion Kafka, Ye Lu, Cheng Yu, Wing Kam Liu

Challenge 4 of the Air Force Research Laboratory (AFRL) Additive Manufacturing Modeling Challenge Series asks the participants to predict the grain-average elastic strain tensors of a few specific \textitchallenge grains} during tensile loading, based on

Generative Adversarial Network Performance in Low-Dimensional Settings

April 20, 2021

Author(s)

Felix M. Jimenez, Amanda Koepke, Mary Gregg, Michael R. Frey

A generative adversarial network (GAN) is an artificial neural network with a distinctive training architecture, designed to create examples that faithfully reproduce a target distribution. GANs have recently had particular success in applications

Simulations of Flow Over an Axisymmetric Hill

February 26, 2021

Author(s)

Rikhi Bose, DongHun Yeo

In this report, high-Reynolds number turbulent flow around an axisymmetric hill is studied using large eddy and unsteady Reynolds averaged Navier-Stokes simulations and the results are extensively validated against experiment. The boundary-layer thickness

Dynamically consistent coarse-grain simulation model of chemically specific polymer melts via friction parameterization

February 24, 2021

Author(s)

Lilian Johnson, Frederick R. Phelan Jr.

Coarse-grained (CG) models of polymers involve grouping many atoms in an all-atom (AA) representation into single sites to reduce computational effort yet retain the hierarchy of length and time scales inherent to macromolecules. Parameterization of such

Merging experiments and computer simulations in X-ray Computed Tomography probability of detection analysis of additive manufacturing flaws

January 27, 2021

Author(s)

Felix Kim, Adam L. Pintar, Jason Fox, Jared B. Tarr, Alkan Donmez, Anne-Francoise Obaton

X-ray Computed Tomography (XCT) is a growing industrial non-destructive testing (NDT) technique for advanced manufacturing industries such as additive manufacturing (AM). Probability of detection (POD) is a critical aspect for qualifying NDT techniques

Quasi-Deterministic Channel Model for mmWave: Mathematical Formalization and Validation

January 25, 2021

Author(s)

Chiehping Lai, Jian Wang, Camillo Gentile, Nada T. Golmie

5G and beyond networks will use, for the first time, the millimeter wave (mmWave) spectrum for mobile communications. An accurate performance evaluation is fundamental for the design of reliable mmWave networks, with the accuracy depending on the fidelity

Tuning the characteristics of photoacoustic pressure in a laser-induced photoacoustic generator: a numerical study

January 19, 2021

Author(s)

Sangmo Kang, Jeeseong C. Hwang

We present a new numerical computation platform to simulate a laser-induced photoacoustic generator (LIPAG) model by integrating thermal, elastic, and acoustic multiphysics simulations. Our unique approach implemented a fully-explicit staggered-grid finite

Developing Cost Functions for Estimating Solar Photovoltaic System Installed Using Historical Data and OLS Regression

November 20, 2020

Author(s)

David H. Webb, Joshua D. Kneifel

Solar photovoltaics (PV) continues to increase in market share. Policy decisions and the nature of solar markets continue to shift; however, it is likely that the price of solar will continue to decrease in the near term. Given the increasing market and

Analysis and Uncertainty Quantification of DNA Fluorescence Melt Data: Applications of Affine Transformations

October 15, 2020

Author(s)

Paul N. Patrone, Anthony J. Kearsley, Jacob M. Majikes, James A. Liddle

Rheology of Crystallizing LLDPE

October 8, 2020

Author(s)

Marat Andreev, David Nicholson, Anthony Kotula, Jonathan D. Moore, Jaap Den Doelder, Gregory C. Rutledge

Polymer crystallization occurs in many plastic manufacturing processes, from injection molding to film blowing. Linear low-density polyethylene (LLDPE) is one of the most commonly processed polymers, wherein the type and extent of short chain branching

Multi-Integral Representations for Associated Legendre and Ferrers Functions

September 25, 2020

Author(s)

Howard S. Cohl

We obtain antiderivatives and complex integral representations for associated Legendre functions and Ferrers functions (associated Legendre functions on-the-cut) of the first and second kind with degree and order equal to within a sign.

Developing Cost Functions for Estimating Solar Photovoltaic System Installed and Life Cycle Costs Using Historical Quote Data

September 22, 2020

Author(s)

David H. Webb, Joshua D. Kneifel, Cheyney M. O'Fallon

Residential solar photovoltaic (PV) system installations have become more prevalent as the installed cost has decreased over the last 10 years while system performance has improved. As these installations have increased, so too has interest in determining