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Displaying 2251 - 2275 of 143775

Development of a Bias Compensating Q-Learning Controller for a Multi-Zone HVAC Facility

August 1, 2023

Author(s)

Syed Ali Asad Rizvi, Amanda Pertzborn

We present the development of a bias compensating reinforcement learning (RL) algorithm that optimizes thermal comfort (by minimizing tracking error) and control utilization (by penalizing setpoint deviations) in a multi-zone heating, ventilation, and air

Erratum: 27-Al+ Quantum-Logic Clock with a Systematic Uncertainty below 10^-18 [Phys. Rev. Lett. 123, 033201 (2019)]

August 1, 2023

Author(s)

Samuel M. Brewer, Jwo-Sy Chen, AARON HANKIN, Ethan Clements, Chin-wen Chou, David J. Wineland, David Hume, David Leibrandt

Four-dimensional scanning transmission electron microscopy: I, Imaging, strain mapping and defect detection

August 1, 2023

Author(s)

Aaron Johnston-Peck, Andrew Herzing

Magnetic Field Sensor Based on a OLED/Organic Photodetector Stack

August 1, 2023

Author(s)

Sebastian Engmann, Emily Bittle, David Gundlach

In this study a novel, all organic magnetic field sensor is presented based on an organic light emitting diode (OLED) and organic photodetector (OPD) with a maximum field sensitivity comparable to commercial Hall-sensors. The sensor function is driven by

Mission Critical Voice Quality of Experience Probability of Successful Delivery Measurement Methods

August 1, 2023

Author(s)

Jaden Pieper, Jesse Frey, Gary Howarth

This paper describes the probability of successful delivery (PSuD) measurement method for every word critical (EWC) and average message intelligibility (AMI) mission-critical voice (MCV) communications contexts. The PSuD measurement is a component of the

Shear influence on colloidal cluster growth: a SANS and USANS study

August 1, 2023

Author(s)

Chris Muzny

This study examines the time evolution of silica/water clusters where the formation of a gel network from unitary silica particles is interrupted by a simple Couette shear field. The aim is to enable the general understanding of this simple system by

Towards 5G New Radio Sidelink Communications: a Versatile Link-Level Simulator and Performance Evaluation

August 1, 2023

Author(s)

Peng Liu, Chen Shen, Chunmei Liu, Fernando Cintron, LYUTIANYANG ZHANG, Liu Cao, Richard A. Rouil, Sumit Roy

Sidelink in cellular networks enables direct exchange of data packets between devices without the need for network infrastructure, resulting in various benefits, including communication in out-of-coverage areas and potential significantly reduced latency

A Method for Capturing Thin Multi-Layer Regions of Powder from Powder Bed Fusion Machines

July 31, 2023

Author(s)

Aniruddha Das, Jordan Weaver, Jared Tarr, Shawn P. Moylan

A powder capture capsule has been designed to capture thin regions of powder at multiple heights within a powder bed of laser powder bed fusion (LPBF) equipment. This design is stackable, support free, and allows powder capture from a targeted region

Assessment of Dose Reduction Strategies in Wavelength-Selective Neutron Tomography

July 31, 2023

Author(s)

Daniel Hussey, Peter Bajcsy, Paul A. Kienzle, Jacob LaManna, David Jacobson, Victoria DiStefano, Daniel Pelt, James Sethian

The goal of this study is to determine variable relationships and a computational workflow that yield the highest quality of three-dimensional reconstructions in neutron imaging applications with reduced number of projections angles. Neutrons interact with

Comparison of Friction Parametrization from Dynamics and Material Properties for a Coarse-Grained Polymer Melt

July 31, 2023

Author(s)

Lilian Johnson, Frederick R. Phelan Jr.

In this work, we extend an approach to coarse-grained (CG) modeling for polymer melts in which the conservative potential is parametrized using the iterative Boltzmann inversion (IBI) method and the accelerated dynamics inherent to IBI are corrected using

Crystalline Quantum Circuits

July 31, 2023

Author(s)

Grace Sommers, David Huse, Michael Gullans

Random quantum circuits continue to inspire a wide range of applications in quantum information science, while remaining analytically tractable through probabilistic methods. Motivated by the need for deterministic circuits with similar applications, we

Disorder-Induced Excitation Continuum in a Spin-1/2 Cobaltate on a Triangular Lattice

July 31, 2023

Author(s)

Bin Gao, Tong Chen, Chien-Lung Huang, Yiming Qiu, Guangyong Xu, Jesse Liebman, Lebing Chen, Matthew B. Stone, Erxi Feng, Huibo Cao, Xiaoping Wang, Xianghan Xu, Sang-Wook Cheong, Stephen Winter, Pengcheng Dai

A spin-1/2 triangular-lattice antiferromagnet is a prototypical frustrated quantum magnet, which exhibits remarkable quantum many-body effects that arise from the synergy between geometric spin frustration and quantum fluctuations. It can host quantum

Measuring the Effectiveness of U.S. Government Security Awareness Programs: A Mixed-Methods Study

July 31, 2023

Author(s)

Jody Jacobs, Julie Haney, Susanne M. Furman

This paper presents our research from our mixed-methods study analyzing how organizations determine security awareness program effectiveness. This paper is being submitted to the 10TH International Conference on HCI in Business, Government and

Numerical simulations of flame spread in pine needle beds using simple thermal decomposition models

July 31, 2023

Author(s)

Eric Mueller, Zakary Campbell-Lochrie, Carlos Walker-Ravena, Rory Hadden

Computational fluid dynamics (CFD) models have increased in use for studying scenarios relevant to wildland fires, such as examination of the driving processes in flame spread in vegetative fuels. However, these tools utilize a complex set of submodels

Retrieval of Raman signals from broadband CARS intensity measurements using an autoencoder trained with a prior excitation function

July 31, 2023

Author(s)

ryan muddiman, Kevin O' Dwyer, Charles Camp, Bryan Hennelly

Broadband coherent anti-Stokes Raman scattering (BCARS) is capable of producing high-quality Raman spectra spanning broad bandwidths, 400–4000 cm−1, with millisecond acquisition times. Raw BCARS spectra, however, are a coherent combination of vibrationally

Lightshow: a Python package for writing computational x-ray absorption spectroscopy input files

July 29, 2023

Author(s)

Matthew Carbone, Fanchen Meng, Christian Vorwerk, Benedikt Mauer, Fabian Peschel, Xiaohui Qu, Eli Stavitski, Claudia Draxl, John Vinson, Deyu Lu

Spectroscopy simulations are a critical tool for the interpretation of experiment, the development of new theoretical understanding, and fast screening of new molecules and materials. Systematically setting up input files for different simulation codes and

A Dual-Path Pulse-Echo Instrument for Liquid-Phase Speed of Sound and Measurements on p-Xylene and Four Halogenated-Olefin Refrigerants [R1234yf, R1234ze(E), R1233zd(E), and R1336mzz(Z)]

July 28, 2023

Author(s)

Mark O. McLinden, Richard A. Perkins

We describe an instrument to measure the speed of sound in liquids based on the dual-path, pulse-echo technique; it covers a temperature range of 228.15 K to 423.15 K, with pressures up to 93 MPa. It differs from similar instruments in the method of

A review of thermal exposure and fire spread mechanisms in Large Outdoor Fires and the Built Environment

July 28, 2023

Author(s)

Alex Filkov, Virginie Tihay-Felicelli, Nima Masoudvaziri, David Rush, Andres Valencia, Yu Wang, David Blunck, Mario Valero, Kamila Kempna, Jeruzalemska Jan Smolka, Jacques De Beer, Zakary Campbell-Lochrie, Felipe Centeno, Muhammad Asim Ibrahim Stuvaregatan, Calisa Katiuscia Lemmertz, Wai Cheong Tam

Due to socio-economic and climatic changes around the world, large outdoor fires in the built environment have become one of the global issues that threaten billions of people. The devastating effects of them are indicative of weaknesses in existing

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