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Displaying 26 - 50 of 422

Software Tools for Uncertainty Evaluation in VNA Measurements: A Comparative Study

June 8, 2017
Author(s)
Gustavo Avolio, Dylan Williams, Michael Frey, Sarah B. Streett, Dominique Schreurs, Andrea Ferrero, Michael Dieudonne
We compared three software tools designed for scattering-parameter measurement uncertainty evaluation. These tools propagate uncertainty to calibrated S-parameters by means of a sensitivity analysis. We also validated the sensitivity analysis with Monte

Recent developments in large-scale dimensional metrology

July 30, 2009
Author(s)
G Peggs, P.G Maropoulos, E.B Hughes, Alistair Forbes, S Robson, M Ziebart, Bala Muralikrishnan
With ever-more demanding requirements for the accurate manufacture of large components, dimensional measuring techniques are becoming progressively more sophisticated. This review describes some of the more recently-developed techniques and the state-of

A New Limit on Time-Reversal Violation in Beta Decay

September 2, 2012
Author(s)
Hans P. Mumm, T E. Chupp, K P. Coulter, R L. Cooper, S J. Freedman, B. K. Fujikawa, A. Garcia, Gordon L. Jones, Jeffrey S. Nico, Alan K. Thompson, C A. Trull, J. F. Wilkerson, F. E. Wiefeldt
… to the Standard Model. Our result is D = (-0.96 ± 1.89(stat) ± 1.01(sys)) × 10e-4. The corresponding phase …

Structure and Properties of a-NaFeO 2 -type Ternary Sodium Iridates

February 1, 2014
Author(s)
Kristen Baroudi, Cindi Yim, Hui Wu, Qingzhen Huang, John H. Roudebush, Eugenia Vavilova, Hans-Joachim Grafe, Vladislav Kataev, Bernd Buechner, Huiwen Ji, Changyang Kuo, Zhiwei Hu, Tun-Wen Pi, Chiwen Pao, Jyhfu Lee, Daria Mikhailova, Liu Hao Tjeng, R. J. Cava
… reported for layered compounds of the type Na 3-x MIr 2 O 6 and Na 3-x M 2 IrO 6 , where M is a transition metal from … 1/3} Ir 2/3} O 2 , Na 0.86} Cu 1/3} Ir 2/3} O 2 , and Na 0.89 Zn 1/3} Ir 2/3} O 2 display dominant antiferromagnetic … Na 2 IrO 3 to Na 0.92 Ni 1/3} Ir 2/3}O d2^ and Na 0.89 Zn 1/3} Ir 2/3}O d2^ provide strong indications that the …

Measuring Scale Errors in a Laser Tracker s Horizontal Angle Encoder through Simple Length Measurement and Two-face System Tests

November 1, 2010
Author(s)
Balasubramanian Muralikrishnan, Christopher J. Blackburn, Daniel S. Sawyer, Steven D. Phillips, Robert Bridges, Quan Ma
We describe a method to estimate the scale errors in the horizontal angle encoder of a laser tracker in this paper. The method does not require expensive instrumentation such as a rotary stage or even a calibrated artifact. An uncalibrated but stable

Least-Squares Fitting Algorithms of the NIST Algorithm Testing System

December 1, 1998
Author(s)
Craig M. Shakarji
This report describes algorithms for fitting certain curves and surfaces to points in three dimensions. All fits are based on orthogonal distance regression. The algorithms were developed as reference software for the NIST Algorithm Testing System, which

Multistage Networks for Glassy Holographic Photopolymers

April 29, 2025
Author(s)
Alexander Osterbaan, Andrew Sias, Marianela Trujillo-Lemon, Kieran Fung, Jason Killgore, ROBERT MCLEOD, Christopher Bowman
… index contrast of 0.0057, and a diffraction efficiency of 89% achieved in these materials. Ultimately, the 3-stage …

Kinetic Inductance Traveling Wave Amplifiers For Multiplexed Qubit Readout

December 10, 2018
Author(s)
Leonardo Ranzani, K. C. Fong, G. Ribell, Tomas A. Ohki, David P. Pappas, Mustafa Bal, Xian Wu, Robert P. Erickson, Junling Long, Hsiang S. Ku
… of both readout tones with readout fidelities in excess of 89% and negligible effect on qubit lifetime and coherence. …

Production, purification and characterization of 15N5-labeled cis- and trans-aflatoxin B1-formamidopyrimidines, and aflatoxin B1-N7-guanine as internal standards for mass spectrometric measurements

April 11, 2023
Author(s)
Pawel Jaruga, Melis Kant, Miral M. Dizdar, Rachana Tomar, Vladimir Vartanian, Benjamin Sexton, Carmelo Rizzo, Robert Turesky, Michael Stone, R. Stephen Lloyd
Exposure to aflatoxin B1 (AFB1) through contaminated food is a primary contributor to the occurrence of hepatocellular carcinogenesis worldwide. Hepatitis B viral infections in livers dramatically increase the carcinogenic potency of AFB1 exposures. Liver

Laser Trackers: Testing and Standards

January 1, 2007
Author(s)
Steven D. Phillips
Laser trackers are now the tool of choice for large scale coordinate metrology. They are transportable allowing reconfigurable production facilities at a lower capital cost than large CMMs. Trackers now include absolute distance measuring (ADM) capability
Displaying 26 - 50 of 422
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