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Displaying 11451 - 11475 of 73898

Unsupervised phase mapping of X-ray diffraction data by nonnegative matrix factorization integrated with custom clustering

August 6, 2018
Author(s)
Valentin Stanev, Velimir Vesselinov, Aaron Gilad Kusne, Graham Antoszewski, Ichiro Takeuchi, Boian Alexandrov
Analyzing large X-ray diffraction (XRD) datasets is a key step in high-throughput mapping of the compositional phase diagrams of combinatorial materials libraries. Optimizing and automating this task can help accelerate the process of discovery of

A 300-mK Test Bed for Rapid Characterization of Microwave SQUID Multiplexing Circuits

August 3, 2018
Author(s)
Abigail L. Wessels, Daniel T. Becker, Douglas A. Bennett, Johnathon D. Gard, Johannes Hubmayr, Norman Jarosik, Vincent Y. Kotsubo, John A. Mates, Joel N. Ullom
Microwave SQUID multiplexing is a promising technique for multiplexing large arrays of transition edge sensors. A major bottleneck in the development and distribution of microwave SQUID multiplexer chips occurs in the time-intensive design testing and

Low-Temperature Detectors for CMB Imaging Arrays

August 3, 2018
Author(s)
Johannes Hubmayr, Jason E. Austermann, James A. Beall, Daniel T. Becker, Bradley J. Dober, Shannon M. Duff, Jiansong Gao, Gene C. Hilton, Christopher M. McKenney, Joel N. Ullom, Jeffrey L. Van Lanen, Michael R. Vissers
We review advances in low-temperature detector (LTD) arrays for cosmic microwave background (CMB) polarization experiments, with a particular emphasis on imaging arrays. We briefly motivate the science case, which has spurred a large number of independent

Nanoscale Magnetic Localization in Exchange Strength Modulated Ferromagnets

August 3, 2018
Author(s)
Brian J Kirby, L. Fallarino, P. Riego, Brian B. Maranville, Casey W. Miller, A. Berger
Compositional grading can be used to continuously vary the "local" Curie temperature across the thickness of a ferromagnetic alloy thin film, allowing for a continuously moveable vertical boundary between strongly and weakly magnetized regions. The utility

Summary of Workshop Large Outdoor Fires and the Built Environment

August 3, 2018
Author(s)
Samuel L. Manzello, Raphaele Blanchi, Michael Gollner, Sara McAllister, Eulalia Planas, Elsa Pastor, Pedro Reszka, Sayaka Suzuki, Daniel Gorham
Large outdoor fires present a risk to the built environment. Wildfires that spread into communities, referred to as Wildland-Urban Interface (WUI) fires, have destroyed communities throughout the world, and are an emerging problem in fire safety science

Use of SDR Receivers in TWSTFT for UTC Computation

August 3, 2018
Author(s)
Zhiheng Jiang, Victor S. Zhang, Yi-Jiun Huang, Joseph Achkar, Dirk Piester, Shinn-Yan Lin, Wenjun Wu, Sung-hoon Yang, Jerzy Nawrocki, Ilaria Sesia, Christian Schlunegger, Zhiqiang Yang, Miho Fujieda, Albin Czubla, Hector Esteban, Carsten Rieck, Peter Whibberley
Two-Way Satellite Time and Frequency Transfer (TWSTFT) is a primary technique for the generation of Coordinated Universal Time (UTC). About 20 timing laboratories around the world continuously operate TWSTFT using the SAtellite Time and Ranging Equipment

Waveform metrology: Signal measurements in a modulated world

August 3, 2018
Author(s)
Paul D. Hale, Dylan F. Williams, Andrew M. Dienstfrey
In this work, we review the \full waveform metrology" concept that we introduced at the National Institute of Standards and Technology. Under this paradigm the full waveform and its functional representation is the target measurand. From the waveform

A Highly Linear Calibration Metric for TES X-ray Microcalorimeters

August 2, 2018
Author(s)
Christine G. Pappas, Joseph W. Fowler, Douglas A. Bennett, William B. Doriese, Young I. Joe, Kelsey M. Morgan, Galen C. O'Neil, Joel N. Ullom, Daniel S. Swetz
Transition-edge sensor X-ray microcalorimeters are usually calibrated empirically, as the most widely-used calibration metric, optimal filtered pulse height (OFPH), in general has an unknown dependance on photon energy, E γ. Because the calibration

PAGE4 and Conformational Switching: Insights from Molecular Dynamics Simulations and Implications for Prostate Cancer

August 2, 2018
Author(s)
Alexander Grishaev, Xingcheng Lin, Mohit Jolly, Federico Bocci, Nicholas Schafer, Min-Yeh Tsai, Yihong Chen, Yanan He, Keith Weninger, John Orban, Prakash Kulkarni, Govindan Rangarajan, Herbert Levine, Jose Onuchic
Prostate-Associated Gene 4 (PAGE4) is a disordered protein implicated in the progression of prostate cancer. PAGE4 can be phosphorylated at two residue sites by Homeodomain-Interacting Protein Kinase 1 (HIPK1) to facilitate its binding to the Activator

Chemical Compound Classification by Elemental Signatures in Castle Dust Using SEM Automated X-ray Particle Analysis

August 1, 2018
Author(s)
Diana Ortiz-Montalvo, Edward P. Vicenzi, Nicholas W. Ritchie, Carol A. Grissom, Richard A. Livingston, Zoe Weldon-Yochim, Joseph M. Conny, Scott A. Wight
Discoloration on the Smithsonian Institution Building and Enid A. Haupt Garden gateposts was recently revealed to be related to a Mn enriched rock varnish. Mn does not appear to be derived locally from the building stone; therefore, its source is likely

Competitive solvation effects in polyelectrolyte solutions

August 1, 2018
Author(s)
Alexandros Chremos, Jack F. Douglas
An understanding of the solution properties and phase behavior of natural and synthetic polyelectrolytes requires an understanding of the competitive association of water (“hydration”) and ion association to the polymer backbone and the consequences of

Evaluation of Lateral and Depth Resolutions of Light Field Cameras

August 1, 2018
Author(s)
Sowon Joy Yoon, Peter Bajcsy, Maritoni A. Litorja, James J. Filliben
In crime scene investigations, 3D forensic evidence such as tire tread and shoe imprints in substances like mud or snow can often provide useful information to identify suspects and victims. This work focuses on evaluating lateral and depth resolutions of
Displaying 11451 - 11475 of 73898
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